Update documentation for 6.0.0

.ci/travis-build.sh

@@ -1,10 +0,0 @@
-#!/bin/sh
-set -e -x
-
-make -j2
-
-if [ "$TEST" != "NO" ]
-then
-  make -j2 tapfiles
-  make -j2 -s test-results
-fi

.ci/travis-prepare.sh

@@ -1,83 +0,0 @@
-#!/bin/sh
-set -e -x
-
-cat << EOF > configure/RELEASE.local
-EPICS_BASE=$HOME/.source/epics-base
-EOF
-
-install -d "$HOME/.source"
-cd "$HOME/.source"
-
-git clone --quiet --depth 5 --branch "$BRBASE" https://github.com/${REPOBASE:-epics-base}/epics-base.git epics-base
-(cd epics-base && git log -n1 )
-
-EPICS_HOST_ARCH=`sh epics-base/startup/EpicsHostArch`
-
-# requires wine and g++-mingw-w64-i686
-if [ "$WINE" = "32" ]
-then
-  echo "Cross mingw32"
-  sed -i -e '/CMPLR_PREFIX/d' epics-base/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
-CMPLR_PREFIX=i686-w64-mingw32-
-EOF
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS+=win32-x86-mingw
-EOF
-fi
-
-if [ "$STATIC" = "YES" ]
-then
-  echo "Build static libraries/executables"
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-SHARED_LIBRARIES=NO
-STATIC_BUILD=YES
-EOF
-fi
-
-case "$CMPLR" in
-clang)
-  echo "Host compiler is clang"
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.Common.$EPICS_HOST_ARCH
-GNU         = NO
-CMPLR_CLASS = clang
-CC          = clang
-CCC         = clang++
-EOF
-
-  # hack
-  sed -i -e 's/CMPLR_CLASS = gcc/CMPLR_CLASS = clang/' epics-base/configure/CONFIG.gnuCommon
-
-  clang --version
-  ;;
-*)
-  echo "Host compiler is default"
-  gcc --version
-  ;;
-esac
-
-cat <<EOF >> epics-base/configure/CONFIG_SITE
-USR_CPPFLAGS += $USR_CPPFLAGS
-USR_CFLAGS += $USR_CFLAGS
-USR_CXXFLAGS += $USR_CXXFLAGS
-EOF
-
-# set RTEMS to eg. "4.9" or "4.10"
-# requires qemu, bison, flex, texinfo, install-info
-if [ -n "$RTEMS" ]
-then
-  echo "Cross RTEMS${RTEMS} for pc386"
-  curl -L "https://github.com/mdavidsaver/rsb/releases/download/20171203-${RTEMS}/i386-rtems${RTEMS}-trusty-20171203-${RTEMS}.tar.bz2" \
-  | tar -C / -xmj
-
-  sed -i -e '/^RTEMS_VERSION/d' -e '/^RTEMS_BASE/d' epics-base/configure/os/CONFIG_SITE.Common.RTEMS
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.Common.RTEMS
-RTEMS_VERSION=$RTEMS
-RTEMS_BASE=$HOME/.rtems
-EOF
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS += RTEMS-pc386-qemu
-EOF
-fi
-
-make -j2 -C epics-base $EXTRA

.gitignore

@@ -1,17 +1,15 @@
-/cfg/
-/bin/
-/lib/
-/db/
-/dbd/
-/html/
-/include/
-/templates/
-/configure/*.local
-/configure/RELEASE.*
-/configure/CONFIG_SITE.*
-O.*/
-/QtC-*
+bin/
+lib/
+doc/
+include/
+db/
+dbd/
+documentation/html
+documentation/*.tag
 envPaths
-*.orig
-*.log
-.*.swp
+configure/*.local
+configure/RELEASE.*
+configure/CONFIG_SITE.*
+!configure/ExampleRELEASE.local
+**/O.*
+QtC-*

.travis.yml

@@ -1,30 +0,0 @@
-sudo: false
-dist: trusty
-language: c++
-compiler:
-  - gcc
-addons:
-  apt:
-    packages:
-    - libreadline6-dev
-    - libncurses5-dev
-    - perl
-    - clang
-    - g++-mingw-w64-i686
-    - qemu-system-x86
-install:
- - ./.ci/travis-prepare.sh
-script:
- - ./.ci/travis-build.sh
-env:
- - BRBASE=7.0 CMPLR=gcc
- - BRBASE=7.0 CMPLR=clang
- - BRBASE=7.0 USR_CXXFLAGS=-std=c++11
- - BRBASE=7.0 CMPLR=clang USR_CXXFLAGS=-std=c++11
- - BRBASE=7.0 WINE=32 TEST=NO STATIC=YES
- - BRBASE=7.0 WINE=32 TEST=NO STATIC=NO
- - BRBASE=7.0 RTEMS=4.10 TEST=NO
- - BRBASE=7.0 RTEMS=4.9 TEST=NO
- - BRBASE=3.16
- - BRBASE=3.15
- - BRBASE=3.14

Makefile

@@ -11,7 +11,4 @@ src_DEPEND_DIRS = configure
 DIRS += testApp
 testApp_DEPEND_DIRS = src
 
-DIRS += examples
-examples_DEPEND_DIRS = src
-
 include $(TOP)/configure/RULES_TOP

README.md

@@ -1,16 +1,57 @@
-# pvaDataCPP
+pvaDataCPP
+==========
 
-The EPICS **pvData** API provides a set of classes and utilities that form the core of the EPICS PVA implementation.
+pvDataCPP is a set of data types and utilities that form part of the EPICS V4 project.
 
-The pvDataCPP module is a part of the EPICS software toolkit that implements pvData structures as C++ class objects.
 
-## Links
+Further Info
+------------
 
-- General information about EPICS can be found at the
-  [EPICS Controls website](https://epics-controls.org).
-- API documentation for this module can be found on its
-  [Github Pages website](https://epics-base.github.io/pvDataCPP/).
+Consult the documents in the documentation directory, in particular
+
+* pvDataCPP.html
+* RELEASE_NOTES.md
+
+Also see the [EPICS Version 4 website](http://epics-pvdata.sourceforge.net)
+
+Prerequisites
+-------------
+
+The pvDataCPP  requires recent versions of the following software:
+
+1. EPICS Base (v3.14.12.3 or later)
+2. EPICS4 pvCommonCPP (4.1.0 or later)
+
+(pvCommonCPP may not be needed depending on host/compiler.)
+
+
+Building
+--------
+
+Building uses the make utility and the EPICS base build system.
+
+The build system needs the location of the prerequisites, e.g. by placing the
+lines of the form
+
+    PVCOMMON = /home/install/epicsV4/pvCommonCPP
+    EPICS_BASE = /home/install/epics/base
+
+pointing to the locations in a file called RELEASE.local
+in the configure directory or the parent directory of pvDataCPP.
+
+With this in place, to build type make
+
+    make
+
+To perform a clean build type
+
+    make clean uninstall
+
+To run the unit tests type
+
+    make runtests
+
+For more information on the EPICS build system consult the
+[Application Development guide](http://www.aps.anl.gov/epics/base/R3-14/12-docs/AppDevGuide.pdf).
 
-## Building
 
-This module is included as a submodule of a full EPICS 7 release and will be compiled during builds of that software.

configure/CONFIG_PVDATA_VERSION

@@ -1,4 +0,0 @@
-EPICS_PVD_MAJOR_VERSION = 7
-EPICS_PVD_MINOR_VERSION = 1
-EPICS_PVD_MAINTENANCE_VERSION = 0
-EPICS_PVD_DEVELOPMENT_FLAG = 0

configure/CONFIG_SITE

@@ -20,14 +20,9 @@ CHECK_RELEASE = YES
 #   INSTALL_LOCATION here.
 #INSTALL_LOCATION=</path/name/to/install/top>
 
-USR_CPPFLAGS += -DPVD_INTERNAL
-
 -include $(TOP)/../CONFIG_SITE.local
 -include $(TOP)/configure/CONFIG_SITE.local
 
-# MSVC - skip defining min()/max() macros
-USR_CPPFLAGS_WIN32 += -DNOMINMAX
-
 ifdef WITH_COVERAGE
 USR_CPPFLAGS += --coverage
 USR_LDFLAGS += --coverage

configure/Makefile

@@ -2,8 +2,6 @@ TOP=..
 
 include $(TOP)/configure/CONFIG
 
-CFG += CONFIG_PVDATA_VERSION
-
 TARGETS = $(CONFIG_TARGETS)
 CONFIGS += $(subst ../,,$(wildcard $(CONFIG_INSTALLS)))
 

configure/RELEASE

@@ -1,38 +1,25 @@
-# RELEASE - Location of external support modules
+# pvDataCPP RELEASE - Location of external support modules
 #
-# IF YOU CHANGE ANY PATHS in this file or make API changes to
-# any modules it refers to, you should do a "make rebuild" in
-# this application's top level directory.
+# IF YOU CHANGE this file or any file it includes you must
+# subsequently do a "gnumake rebuild" in the application's
+# top level directory.
 #
-# The EPICS build process does not check dependencies against
-# any files from outside the application, so it is safest to
-# rebuild it completely if any modules it depends on change.
+# The build process does not check dependencies against files
+# that are outside this application, thus you should also do a
+# "gnumake rebuild" in the top level directory after EPICS_BASE
+# or any other external module pointed to below is rebuilt.
 #
 # Host- or target-specific settings can be given in files named
 #  RELEASE.$(EPICS_HOST_ARCH).Common
 #  RELEASE.Common.$(T_A)
 #  RELEASE.$(EPICS_HOST_ARCH).$(T_A)
+
+# EPICS V4 Developers: Do not edit the locations in this file!
 #
-# This file is parsed by both GNUmake and an EPICS Perl script,
-# so it may ONLY contain definititions of paths to other support
-# modules, variable definitions that are used in module paths,
-# and include statements that pull in other RELEASE files.
-# Variables may be used before their values have been set.
-# Build variables that are NOT used in paths should be set in
-# the CONFIG_SITE file.
+# Create a file RELEASE.local pointing to your PVCOMMON
+# and EPICS_BASE build directories, e.g.
+#   PVCOMMON = /home/install/epicsV4/pvCommonCPP
+#   EPICS_BASE = /home/install/epics/base
 
-# Variables and paths to dependent modules:
-#MODULES = /path/to/modules
-#MYMODULE = $(MODULES)/my-module
-
-# If building the EPICS modules individually, set these:
-#EPICS_BASE = /path/to/base
-
-# Set RULES here if you want to use build rules from elsewhere:
-#RULES = $(MODULES)/build-rules
-
-# These allow developers to override the RELEASE variable settings
-# without having to modify the configure/RELEASE file itself.
 -include $(TOP)/../RELEASE.local
--include $(TOP)/../RELEASE.$(EPICS_HOST_ARCH).local
 -include $(TOP)/configure/RELEASE.local

documentation/.gitignore

@@ -1,3 +0,0 @@
-*.tag
-*.db
-html/

documentation/Makefile

@@ -1,13 +0,0 @@
-all: gen
-
-clean:
-	rm -rf doxygen_sqlite3.db html
-
-gen:
-	doxygen
-
-commit: gen
-	touch html/.nojekyll
-	./commit-gh.sh documentation/html/ html/.nojekyll html/*.* html/search/*.*
-
-.PHONY: all clean gen commit

documentation/RELEASE_NOTES.html

@@ -0,0 +1,315 @@
+<h1>Release 6.0.0</h1>
+
+<p>The main changes since release 5.0.4 are:</p>
+
+<ul>
+<li>Linux shared library version added</li>
+<li>Headers have been moved into pv directories</li>
+<li>Bitset functions declared const where possible</li>
+<li>Bitset::swap added</li>
+<li>Requester::message has default implementation</li>
+<li>Serialization/deserialization helpers added</li>
+<li>Non-template getSubField char* overload added</li>
+<li>MonitorPlugin deprecated</li>
+<li>Field name validation performed</li>
+<li>Now builds for Cygwin and MinGW targets</li>
+<li>Fix for debug build issue.</li>
+<li>New license file replaces LICENSE and COPYRIGHT</li>
+</ul>
+
+<h2>Shared library version added</h2>
+
+<p>Linux shared library version numbers have been added by setting SHRLIB_VERSION
+(to 6.0 in this case). So shared object will be libpvData.so.6.0 instead of
+libpvData.so.</p>
+
+<h2>Headers have been moved into pv directories</h2>
+
+<p>E.g. src/property/alarm.h -> src/property/pv/alarm.h</p>
+
+<p>This facilitates using some IDEs such as Qt Creator.</p>
+
+<h2>Requester::message has default implementation</h2>
+
+<p>Requester::message is no longer pure virtual. Default implementation sends
+string to std::cerr.</p>
+
+<h2>Serialization/deserialization helpers added</h2>
+
+<p>A helper function, serializeToVector, has been added which serializes a 
+Serializable object into a standard vector of UInt8s.</p>
+
+<p>Similarly a function deserializeFromVector deserializes a standard vector into
+a Deserializable object.</p>
+
+<p>A function deserializeFromBuffer deserializes a ByteBuffer into a 
+Deserializable object.</p>
+
+<h2>Field name validation performed</h2>
+
+<p>On creating a Structure or Union the field names are now validated.</p>
+
+<p>Valid characters for a field name are upper or lowercase letters, numbers and
+underscores and intial numbers are invalid, i.e. names must be of the form
+[A-Za-z<em>][A-Za-z0-9</em>]*.</p>
+
+<h2>Now builds for Cygwin and MinGW targets</h2>
+
+<p>Includes cross-compiling MinGW on Linux.</p>
+
+<h1>Release 5.0.4</h1>
+
+<p>The changes since release 5.0.3 are:</p>
+
+<ul>
+<li>Fixed bitset serialization (issue #24)</li>
+<li>Fixed truncation in BitSet::or_and (issue #27)</li>
+</ul>
+
+<h2>Fixed bitset serialization (issue #24)</h2>
+
+<p>C++ bitset serialization was not consistent with the C++ deserialization and
+Java code in some instances (depending on the endianness of the serializer and
+deserializer) when the number of bits was 56-63 modulo 64. C++ serialization
+has been fixed.</p>
+
+<p>Fix exposed issue in deserialization on 32-bit platforms which
+has also been corrected. </p>
+
+<h2>Fixed truncation in BitSet::or_and (issue #27)</h2>
+
+<p>If n, n1 and n2 words are used to store the values of the bitsets bitset,
+bitset1 and bitset2 respectively then max(n, min(n1,n2)) words are needed
+to store bitset.or_(bitset1, bitset2).</p>
+
+<p>Previously min(n1,n2) words were used and the result would be truncated in
+some instances. This has been fixed.</p>
+
+<h1>Release 5.0.3</h1>
+
+<p>The only change since release 5.0.2 is:</p>
+
+<h2>Fixed buffer overflow in PVUnion::serialize() (issue #20)</h2>
+
+<p>A PVUnion whose stored value was null was serialized without checking 
+whether the buffer had sufficient capacity. This has been fixed by calling
+ensureBuffer().</p>
+
+<h1>Release 5.0.2</h1>
+
+<p>The main changes since release 4.0.3 are:</p>
+
+<ul>
+<li>Deprecated getXXXField() methods have been removed from PVStructure</li>
+<li>Convert copy methods and equals operators (re)moved</li>
+<li>Convert::copyUnion now always copies between subfields.</li>
+<li>New method getSubFieldT, like getSubField except it throws an exception</li>
+<li>findSubField method removed from PVStructure</li>
+<li>New stream operators for Field and PVField are provided</li>
+<li>New template versions of Structure::getField</li>
+<li>Fixes for static initialisation order issues</li>
+<li>CreateRequest prevents a possible SEGFAULT</li>
+</ul>
+
+<h2>Deprecated getXXXField methods have been removed from PVStructure</h2>
+
+<p>The following methods have been removed from PVStructure</p>
+
+<ul>
+<li>getBooleanField</li>
+<li>getByteField, getShortField, getIntField, getLongField</li>
+<li>getUByteField, getUShortField, getUIntField, getULongField</li>
+<li>getStringField</li>
+<li>getStructureField, getUnionField</li>
+<li>getScalarArrayField, getStructureArrayField, getUnionArrayField</li>
+</ul>
+
+<p>Use template getSubField instead, e.g. use</p>
+
+<pre><code>getSubField&lt; PVInt &gt;(fieldName)
+</code></pre>
+
+<p>in place of</p>
+
+<pre><code>getIntField(fieldName)
+</code></pre>
+
+<h2>Convert copy methods and equals operators</h2>
+
+<p>Convert copy methods where moved and replaced with methods
+on PVField classes, i.e.</p>
+
+<pre><code>PVField::copy(const PVField&amp; from)
+</code></pre>
+
+<p>Methods</p>
+
+<pre><code>PVField::copyUnchecked(const PVField&amp; from)
+</code></pre>
+
+<p>were added to allow unchecked copies, to gain performance
+where checked are not needed (anymore).</p>
+
+<p>In addition:
+- isCompatibleXXX methods were removed in favour of Field::operator==.
+- equals methods were remove in favour of PVField::operator==.
+- operator== methods where moved to pvIntrospect.h and pvData.h</p>
+
+<h2>Convert::copyUnion</h2>
+
+<p>Before this method, depending on types for to and from,
+sometimes did a shallow copy, i.e. just made to shared_ptr for to 
+share the same data as from.
+Now it always copies between the subfield of to and from.</p>
+
+<h2>New method getSubFieldT, like getSubField except it throws an exception</h2>
+
+<p>PVStructure has a new template member</p>
+
+<pre><code>getSubFieldT(std::string const &amp;fieldName)
+</code></pre>
+
+<p>that is like <b>getSubField</b> except that it throws a runtime_error
+instead of returning null.</p>
+
+<h2>findSubField method removed from PVStructure</h2>
+
+<p>This was mainly used in the implementation of getSubField. With a change to
+the latter, findSubField was removed.</p>
+
+<h2>New stream operators</h2>
+
+<p>New steam operators are available for Field and PVField.
+Before to print a Field (or any extension) or a PVField (or any extension)
+it was necessary to have code like:</p>
+
+<pre><code> void print(StructureConstPtr struc, PVStructurePtr pv)
+ {
+     if(struc) {
+         cout &lt;&lt; *struc &lt;&lt; endl;
+     } else {
+         cout &lt;&lt; "nullptr\n"
+     }
+     if(pv) {
+         cout &lt;&lt; *.struc &lt;&lt; endl;
+     } else {
+         cout &lt;&lt; "nullptr\n"
+     }
+ }
+</code></pre>
+
+<p>Now it can be done as follows:</p>
+
+<pre><code> void print(StructureConstPtr struc, PVStructurePtr pv)
+ {
+     cout &lt;&lt; struc &lt;&lt; endl;
+     cout &lt;&lt; pv &lt;&lt; endl;
+ }
+</code></pre>
+
+<h2>New template version of Structure::getField</h2>
+
+<p>A new template getField method has been added to Structure</p>
+
+<p>template<typename FT >
+std::tr1::shared_ptr&lt; const FT > getField(std::string const &amp;fieldName) const </p>
+
+<p>Can be used, for example, as follows:</p>
+
+<pre><code>StructurePtr tsStruc = struc-&gt;getField&lt;Structure&gt;("timeStamp");
+</code></pre>
+
+<h2>Fixes for static initialisation order issues</h2>
+
+<p>Certain static builds (in particular Windows builds) of applications using
+pvData had issues due to PVStructure::DEFAULT_ID being used before being initialised. This has been fixed.</p>
+
+<h2>CreateRequest change</h2>
+
+<p>createRequest could cause a SEGFAULT if passed a bad argument.
+This has been changed so the it returns a null pvStructure
+and provides an error.</p>
+
+<h1>Release 4.0.3</h1>
+
+<p>The main changes since release 3.0.2 are:</p>
+
+<ul>
+<li>array semantics now enforce Copy On Write.</li>
+<li>String no longer defined.</li>
+<li>timeStamp and valueAlarm name changes</li>
+<li>toString replaced by stream I/O </li>
+<li>union is new type.</li>
+<li>copy is new.</li>
+<li>monitorPlugin is new.</li>
+</ul>
+
+<h2>New Semantics for Arrays</h2>
+
+<p>PVScalarArray, PVStructureArray, and PVUnionArray all enforce COW (Copy On Write) Semantics.
+In order to limit memory usage the storage for raw data is managed via a new shared<em>vector facility.
+This allows multiple instances of array data to use the shared raw data.
+COW is implemented via shared</em>vectors of const data, i. e. data that can not be modified.</p>
+
+<h2>String no longer defined</h2>
+
+<p>This is replaced by std::string.</p>
+
+<h2>timeStamp and valueAlarm name changes</h2>
+
+<p>In timeStamp nanoSeconds is changed to nanoseconds.</p>
+
+<p>In valueAlarm hysteresis is changed to hysteresis</p>
+
+<h2>toString replaced by stream I/O</h2>
+
+<p>pvData.h and pvIntrospect no longer defines toString
+Instead they have stream support.
+pvIntrospect uses method dump and pvData uses dumpValue.
+For example:</p>
+
+<pre><code>  PVDoublePtr pvValue;
+  String buffer;
+  pvValue-&gt;toString(&amp;buffer);
+  cout &lt;&lt; buffer &lt;&lt; endl;
+  buffer.clear();
+  pvValue-&gt;getField()-&gt;toString(&amp;buffer);
+  cout &lt;&lt; buffer &lt;&lt; evdl;
+</code></pre>
+
+<p>is replaced by</p>
+
+<pre><code>  PVDoublePtr pvValue;
+  cout &lt;&lt; *pvValue &lt;&lt; endl
+  cout &lt;&lt; *pvValue-&gt;getField() &lt;&lt; endl;
+</code></pre>
+
+<h2>union is a new basic type.</h2>
+
+<p>There are two new basic types: union_t and unionArray.</p>
+
+<p>A union is like a structure that has a single subfield.
+There are two flavors:</p>
+
+<ul>
+<li><b>variant union</b> The field can have any type.</li>
+<li><b>union</b> The field can any of specified set of types.</li>
+</ul>
+
+<p>The field type can be dynamically changed.</p>
+
+<h2>copy </h2>
+
+<p>This consists of createRequest and pvCopy.
+createRequest was moved from pvAccess to here.
+pvCopy is moved from pvDatabaseCPP and now depends
+only on pvData, i.e. it no longer has any knowledge of PVRecord.</p>
+
+<h2>monitorPlugin</h2>
+
+<p>This is for is for use by code that implements pvAccess monitors.
+This is prototype and is subject to debate.</p>
+
+<h1>Release 3.0.2</h1>
+
+<p>This was the starting point for RELEASE_NOTES</p>

documentation/RELEASE_NOTES.md

@@ -1,81 +1,6 @@
-/**
-
-@page release_notes Release Notes
-
-Release 7.1.1 (Mar 2019)
-========================
-
-- Fixes
- - Init order issue with StandardField::getStandardField()
- - Build fix for Visual Studio 2013+
-
-Release 7.1.0 (Nov 2018)
-========================
-
-- Deprecations
- - BoundedString, BoundedScalarArray, and FixedScalarArray will be removed unless they are fixed.
-   See https://github.com/epics-base/pvDataCPP/issues/52 for discussion.
- - pv/localStaticLock.h
- - pv/pvCopy.h (see epics::pvData::PVRequestMapper)
-- Removals
- - Remove previously deprecated executor.h, queue.h and timerFunction.h
- - Remove *HashFunction functors to "hash" Field sub-classes which were never fully implemented.
-- Fixes
- - Make thread safe getFieldCreate() and getPVDataCreate()
- - Workaround for MSVC pickyness that iterators be non-NULL, even when not de-referenced.
- - Fix alignment fault during (de)serialization on RTEMS/vxWorks.
- - Fix epics::pvData::shared_vector::swap() for void specialization.
- - Changes in several epics::pvData::Field sub-classes to return const ref. instead of a copy.
-- Additions
- - epics::pvData::shared_vector add c++11 move and construct for initializer list.
- - Add epics::pvData::AnyScalar::clear()
- - Add ctor epics::pvData::AnyScalar(ScalarType, const void*) to allow construction from an untyped buffer.
- - Add epics::pvData::Timer::close()
- - Allow epics::pvData::castUnsafe() from const char* without first allocating a std::string.
- - De-duplication of epics::pvData::Field instances is performed using a global hash table.
-   Identical definitions will share a single instance.  Allows O(0) comparision.
- - Add epics::pvData::PVRequestMapper to facilitate (partial) copying between PVStructure instances
-   modified by a pvRequest.
- - Add shorthand notations epics::pvData::FieldBuilder::begin() and epics::pvData::Field::build()
-
-Release 7.0.0 (Dec 2017)
-========================
-
-- Removals
- - Remove requester.h, monitor.h, and destroyable.h..  Migrated to the pvAccessCPP module.
- - Previously deprecated monitorPlugin.h is removed.
- - Remove pv/messageQueue.h and epics::pvData::MessageQueue
-- Deprecate the following utility classes, to be removed in 8.0.
- - epics::pvData::Queue
- - epics::pvData::Executor
- - epics::pvData::TimeFunction
-- Additions
- - Add pv/pvdVersion.h which is included by pv/pvIntrospect.h
- - Add epics::pvData::createRequest() function.  Alternative to epics::pvData::CreateRequest class which throws on error.
- - epics::pvData::FieldBuilder allow Structure defintion to be changed/appended
- - Add epics::pvData::ValueBuilder like FieldBuilder also sets initial values.
-  - Can also be constructed using an existing PVStructure to allow "editing".
- - Add debugPtr.h wrapper with reference tracking to assist in troubleshooting shared_ptr related ref. loops.
- - Add @ref pvjson utilities
- - Add reftrack @ref pvd_reftrack
- - Add header typemap.h to facilitate boilerplate switch() over ScalarType
- - Add epics::auto_ptr typedef in help writing code supporting both c++98 and c++11 w/o copious deprecation warnings.
-
-
-Release 6.0.1
+Release 6.0.0
 =============
 
-The changes since release 6.0.0 are:
-
-* Fix "Problem building pvDataCPP for win32-x86-mingw" (issue #42)
-* In src/misc/bitSet.cpp #include "algorithm" required for MSVS 2015
-* In testApp/misc/testTypeCast.cpp print (u)int8 values as integers
-* Minor documentation updates
-
-
-Release 6.0.0 (Aug. 2016)
-=======================
-
 The main changes since release 5.0.4 are:
 
 * Linux shared library version added
@@ -114,13 +39,13 @@ string to std::cerr.
 Serialization/deserialization helpers added
 -------------------------------------------
 
-A helper function, serializeToVector, has been added which serializes a
+A helper function, serializeToVector, has been added which serializes a 
 Serializable object into a standard vector of UInt8s.
 
 Similarly a function deserializeFromVector deserializes a standard vector into
 a Deserializable object.
 
-A function deserializeFromBuffer deserializes a ByteBuffer into a
+A function deserializeFromBuffer deserializes a ByteBuffer into a 
 Deserializable object.
 
 Field name validation performed
@@ -155,7 +80,7 @@ deserializer) when the number of bits was 56-63 modulo 64. C++ serialization
 has been fixed.
 
 Fix exposed issue in deserialization on 32-bit platforms which
-has also been corrected.
+has also been corrected. 
 
 Fixed truncation in BitSet::or_and (issue #27)
 ----------------------------------------------
@@ -176,38 +101,38 @@ The only change since release 5.0.2 is:
 Fixed buffer overflow in PVUnion::serialize() (issue #20)
 ---------------------------------------------------------
 
-A PVUnion whose stored value was null was serialized without checking
+A PVUnion whose stored value was null was serialized without checking 
 whether the buffer had sufficient capacity. This has been fixed by calling
 ensureBuffer().
 
 
-Release 5.0.2 (Sep. 2015)
-=========================
+Release 5.0.2
+=============
 
-The main changes since release 4.0 are:
+The main changes since release 4.0.3 are:
 
-- Deprecated getXXXField() methods have been removed from PVStructure
-- Convert copy methods and equals operators (re)moved
-- Convert::copyUnion now always copies between subfields.
-- New method getSubFieldT, like getSubField except it throws an exception
-- findSubField method removed from PVStructure
-- New stream operators for Field and PVField are provided
-- New template versions of Structure::getField
-- Fixes for static initialisation order issues
-- CreateRequest prevents a possible SEGFAULT
+* Deprecated getXXXField() methods have been removed from PVStructure
+* Convert copy methods and equals operators (re)moved
+* Convert::copyUnion now always copies between subfields.
+* New method getSubFieldT, like getSubField except it throws an exception
+* findSubField method removed from PVStructure
+* New stream operators for Field and PVField are provided
+* New template versions of Structure::getField
+* Fixes for static initialisation order issues
+* CreateRequest prevents a possible SEGFAULT
 
 
 Deprecated getXXXField methods have been removed from PVStructure
--------------------------------------------------------------------
+-----------------------------------------------------------------
 
 The following methods have been removed from PVStructure
 
-- getBooleanField
-- getByteField, getShortField, getIntField, getLongField
-- getUByteField, getUShortField, getUIntField, getULongField
-- getStringField
-- getStructureField, getUnionField
-- getScalarArrayField, getStructureArrayField, getUnionArrayField
+* getBooleanField
+* getByteField, getShortField, getIntField, getLongField
+* getUByteField, getUShortField, getUIntField, getULongField
+* getStringField
+* getStructureField, getUnionField
+* getScalarArrayField, getStructureArrayField, getUnionArrayField
 
 Use template getSubField instead, e.g. use
 
@@ -255,7 +180,7 @@ PVStructure has a new template member
 
     getSubFieldT(std::string const &fieldName)
 
-that is like `getSubField()` except that it throws a runtime_error
+that is like <b>getSubField</b> except that it throws a runtime_error
 instead of returning null.
 
 
@@ -301,8 +226,8 @@ New template version of Structure::getField
 
 A new template getField method has been added to Structure
 
-    template<typename FT >
-    std::tr1::shared_ptr< const FT > getField(std::string const &fieldName) const
+template<typename FT >
+std::tr1::shared_ptr< const FT > getField(std::string const &fieldName) const 
 
 Can be used, for example, as follows:
 
@@ -329,13 +254,13 @@ Release 4.0.3
 
 The main changes since release 3.0.2 are:
 
-- array semantics now enforce Copy On Write.
-- String no longer defined.
-- timeStamp and valueAlarm name changes
-- toString replaced by stream I/O 
-- union is new type.
-- copy is new.
-- monitorPlugin is new.
+* array semantics now enforce Copy On Write.
+* String no longer defined.
+* timeStamp and valueAlarm name changes
+* toString replaced by stream I/O 
+* union is new type.
+* copy is new.
+* monitorPlugin is new.
 
 New Semantics for Arrays
 --------
@@ -391,8 +316,8 @@ There are two new basic types: union_t and unionArray.
 A union is like a structure that has a single subfield.
 There are two flavors:
 
-- *variant union* The field can have any type.
-- *union* The field can any of specified set of types.
+* <b>variant union</b> The field can have any type.
+* <b>union</b> The field can any of specified set of types.
 
 The field type can be dynamically changed.
 
@@ -413,5 +338,3 @@ This is prototype and is subject to debate.
 Release 3.0.2
 ==========
 This was the starting point for RELEASE_NOTES
-
-*/

documentation/TODO.md

@@ -12,3 +12,9 @@ valueAlarm
 normativeTypes.html describes valueAlarm only for a value field that has type
 double.
 The implementation also supports all the numeric scalar types.
+
+monitorPlugin
+-------------
+
+A debate is on-going about what semantics should be.
+

documentation/commit-gh.sh

@@ -1,45 +0,0 @@
-#!/bin/sh
-set -e -x
-# Usage: commit-gh <sub-directory-prefix> <files...>
-#
-# Creates a commit containing only the files in the sub-directory provided as an argument
-#
-# Does not disturb the working copy or index
-
-prefix="$1"
-shift
-
-# Commit to this branch
-BRANCH=refs/heads/gh-pages
-
-# Use the main branch description as the gh-pages commit message
-MSG=`git describe --tags --always`
-
-# Scratch space
-TDIR=`mktemp -d -p $PWD`
-
-# Automatic cleanup of scratch space
-trap 'rm -rf $TDIR' INT TERM QUIT EXIT
-
-export GIT_INDEX_FILE="$TDIR/index"
-
-# Add listed files to a new (empty) index
-git update-index --add "$@"
-
-# Write the index into the repo, get tree hash
-TREE=`git write-tree --prefix="$prefix"`
-
-echo "TREE $TREE"
-git cat-file -p $TREE
-
-# Create a commit with our new tree
-# Reference current branch head as parent (if any)
-CMT=`git commit-tree -m "$MSG" $TREE`
-
-echo "COMMIT $CMT"
-git cat-file -p $CMT
-
-# Update the branch with the new commit tree hash
-git update-ref $BRANCH $CMT
-
-echo "Done"

documentation/copyandmonitor.html

@@ -0,0 +1,679 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+      "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
+  <title>EPICS pvDataCPP: copy and monitor</title>
+  <link rel="stylesheet" type="text/css"
+  href="http://epics-pvdata.sourceforge.net/base.css" />
+  <link rel="stylesheet" type="text/css"
+  href="http://epics-pvdata.sourceforge.net/epicsv4.css" />
+  <style type="text/css">
+  /*<![CDATA[*/
+     .about { margin-left: 3em; margin-right: 3em; font-size: .83em}
+     table { margin-left: auto; margin-right: auto }
+     .diagram { text-align: center; margin: 2.5em 0 }
+     span.opt { color: grey }
+     span.nterm { font-style:italic }
+     span.term { font-family:courier }
+     span.user { font-family:courier }
+     span.user:before { content:"<" }
+     span.user:after { content:">" }
+     .nonnorm { font-style:italic }
+     p.ed { color: #AA0000 }
+     span.ed { color: #AA0000 }
+     p.ed.priv { display: inline; }
+     span.ed.priv { display: inline; }
+  /*]]>*/</style>
+  <!-- Script that generates the Table of Contents -->
+  <script type="text/javascript"
+  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
+  </script>
+</head>
+<body>
+
+
+<div id="toc">
+<h2 class="nocount" style="page-break-before: always">Table of Contents</h2>
+</div>
+<div id="contents" class="contents">
+
+<h2>support for copy and monitor</h2>
+<p><b>copy</b> and <b>monitor</b> are not used in this project.
+They are intended for use by pvAccess and by pvAccess servers.
+They are provided with this project because the code depends only on
+pvData itself.
+</p>
+<p>This document describes C++ specific code.
+<a href="http://epics-pvdata.sourceforge.net/informative/pvRequest.html">
+pvRequest.html</a>
+provides a language independent overview of <b>copy</b> and <b>monitor</b>.
+</p>
+<p>
+<b>NOTE:pvRequest.html</b> must be updated since it is based on an earlier version of pvCopy that
+had knowledge of PVRecord. The C++ version was implemented in pvDatabaseCPP
+and the Java version on pvIOCJava.
+At present only the C++ version of the new API for pvCopy is implemented.
+</p>
+<p>Copy provides:
+<dl>
+   <dt>createRequest</dt>
+     <dd>
+      The Channel create methods in pvAccess all have an argument
+      <b>PVStructure pvRequest</b>.<br />
+      Given an ascii string createRequest creates a PVStructure that provides
+      a pvData representation of the information from the ascii string.
+      It is this structure that can be passed to the channel create methods.<br />
+      The information in a pvRequest selects an arbitrary subset of the
+      fields in a top level structure that resides in the server.
+      In addition options can be specified. Both global and field specific
+      options can be specified.
+      </dd>
+   <dt>pvCopy</dt>
+     <dd>This is a facility used by channel providers.
+     It provides client specific code that manages a copy of an arbitrary
+     subset of the fields in a top level structure that resides in the
+     provider. It also allows provider access to options specified
+     by the client.
+     </dd>
+</dl>
+Monitor provides:
+<dl>
+  <dt>monitor</dt>
+    <dd>This is support code for channel providers that implement channel
+    monitor. It, together with the queue facility, provides support for
+    monitor queues.
+    </dd>
+  <dt>monitorPlugin</dt>
+    <dd>This is support for implementing monitor plugins.
+     A monitor plugin can be developed that has no knowledge
+     of pvAccess but only pvData.
+    </dd>
+</dl>
+</p>
+
+<h2>support for copy</h2>
+<p><b>copy</b> provides the ability to create a structure that has 
+a copy of an arbitrary subset of the fields in an existing top level
+structure. In addition it allows global options and field specific options.
+It has two main components: <b>createRequest</b> and <b>pvCopy</b>.
+Given a string createRequest creates a pvRequest, which is a PVStructure
+that has the format expected by <b>pvCopy</b>.
+</p>
+
+<h3>createRequest</h3>
+<p>This is mainly used by pvAccess clients. Given a request string it creates
+a pvRequest structure that can be passed to the pvAccess create methods.
+In turn pvAccess passes the pvRequest to a local channel provider which 
+then passes it to pvCopy.
+</p>
+<p>The definition of the public members is:</p>
+<pre>
+class CreateRequest {
+...
+     static CreateRequestPtr create();
+     virtual PVStructurePtr createRequest(std::string const &amp;request);
+     std::string getMessage();
+};
+</pre>
+<p>An example of how it is used is:</p>
+<pre>
+CreateRequestPtr createRequest = CreateRequest::create();
+PVStructurePtr pvRequest = createRequest-&gt;createRequest(request);
+if(pvRequest==NULL) {
+    std::string error = createRequest-&gt;getMessage();
+    // take some action
+} else {
+    //success do something
+}
+</pre>
+<h3>pvCopy</h3>
+<p>The definition of the public members is:</p>
+<pre>
+class epicsShareClass PVCopyTraverseMasterCallback
+{
+...
+    virtual void nextMasterPVField(PVFieldPtr const &amp;pvField);
+};
+
+class class epicsShareClass PVCopy
+{
+...
+    static PVCopyPtr create(
+        PVStructurePtr const &amp;pvMaster,
+        PVStructurePtr const &amp;pvRequest,
+        std::string const &amp; structureName);
+    PVStructurePtr getPVMaster();
+    void traverseMaster(PVCopyTraverseMasterCallbackPtr const &amp; callback);
+    StructureConstPtr getStructure();
+    PVStructurePtr createPVStructure();
+    size_t getCopyOffset(PVFieldPtr const  &amp;masterPVField);
+    size_t getCopyOffset(
+        PVStructurePtr const  &amp;masterPVStructure,
+        PVFieldPtr const  &amp;masterPVField);
+     PVFieldPtr getMasterPVField(std::size_t structureOffset);
+     void initCopy(
+        PVStructurePtr const  &amp;copyPVStructure,
+        BitSetPtr const  &amp;bitSet);
+     void updateCopySetBitSet(
+        PVStructurePtr const  &amp;copyPVStructure,
+        BitSetPtr const  &amp;bitSet);
+    void updateCopyFromBitSet(
+        PVStructurePtr const  &amp;copyPVStructure,
+        BitSetPtr const  &amp;bitSet);
+    void updateMaster(
+        PVStructurePtr const  &amp;copyPVStructure,
+        BitSetPtr const  &amp;bitSet);
+    PVStructurePtr getOptions(std::size_t fieldOffset);
+...
+};
+</pre>
+where
+<dl>
+   <dt>PVCopyTraverseMasterCallback::nextMasterPVField</dt>
+     <dd>
+       <b>PVCopyTraverseMasterCallback</b> is a callback which must
+       be implemented by the code that uses pvCopy, normally
+       the channel provider. It has the single method <b>nextMasterPVField</b>
+       <br />
+       <b>nextMasterPVField</b> is called for each field in the master
+       as a result of a call to <b>traverseMaster</b>.
+     </dd>
+   <dt>create</dt>
+      <dd>
+        This is the method for creating a PVCopy instance.<br/>
+        <dl>
+           <dt>pvMaster</dt>
+             <dd>the top level structure managed by the server.</dd>
+          <dt>pvRequest</dt>
+           <dd>selects the set of subfields desired
+         and options for each field.</dd>
+          <dt>structureName</dt>
+            <dd>the name for the top level of any PVStructure created.
+            </dd>
+        </dl>
+      </dd>
+   <dt>getPVMaster</dt>
+      <dd>
+       Gets the top level structure from pvMaster.
+      </dd>
+   <dt>traverseMaster</dt>
+      <dd>
+      Traverse all fields of the top level structure of pvMaster.
+      For each field the callback is called.
+      </dd>
+   <dt>getStructure</dt>
+      <dd>
+       Get the introspection interface for a PVStructure for e copy.
+      </dd>
+   <dt>createPVStructure</dt>
+      <dd>Create a copy instance.
+       Monitors keep a queue of monitor elements.
+     Since each element needs a PVStructure, multiple top level structures
+     will be created.
+      </dd>
+   <dt>getCopyOffset</dt>
+      <dd>Given a field in pvMaster.
+       return the offset in copy for the same field.
+      A value of std::string::npos means that the copy does not have this field.
+      Two overloaded methods are provided. The first is called if
+      the field of master is not a structure. The second is for
+      subfields of a structure.
+      </dd>
+   <dt>getMasterPVField</dt>
+      <dd>
+       Given a offset in the copy get the corresponding field in pvMaster.
+      </dd>
+   <dt>initCopy</dt>
+      <dd>
+       Initialize the fields in copyPVStructure
+       by giving each field the  value from the corresponding field in pvMaster.
+       bitSet will be set to show that all fields are changed.
+       This means that bit set will have the value <b>{0}</b>.
+      </dd>
+   <dt>updateCopySetBitSet</dt>
+      <dd>
+      Set all fields in copyPVStructure to the value of the corresponding field
+      in pvMaster. Each field that is changed has it's corresponding
+      bit set in bitSet.
+      </dd>
+   <dt>updateCopyFromBitSet</dt>
+      <dd>
+       For each set bit in bitSet set the field in copyPVStructure to the value
+      of the corresponding field in pvMaster.
+      </dd>
+   <dt>updateMaster</dt>
+      <dd>
+       For each set bit in bitSet set the field in pvMaster to the value
+      of the corresponding field in copyPVStructure.
+      
+      </dd>
+   <dt>getOptions</dt>
+      <dd>
+       Get the options for the field at the specified offset.
+      A NULL is returned if no options were specified for the field.
+      If options were specified,PVStructurePtr is 
+      a structure with a set of PVString subfields that specify name,value
+      pairs. name is the subField name and value is the subField value.
+      </dd>
+</dl>
+
+
+
+
+<h2>support for monitor</h2>
+<p>This consists of two components:
+<dl>
+   <dt>monitor</dt>
+     <dd>Used by code that implements pvAccess monitors.</dd>
+   <dt>monitorPlugin</dt>
+      <dd>Code that provides special semantics for monitors.</dd>
+</dl>
+</p>
+<h3>monitor</h3>
+<pre>
+class MonitorElement {
+    MonitorElement(PVStructurePtr const &amp; pvStructurePtr);
+    PVStructurePtr pvStructurePtr;
+    BitSetPtr changedBitSet;
+    BitSetPtr overrunBitSet;
+};
+
+class Monitor {
+    virtual Status start() = 0;
+    virtual Status stop() = 0;
+    virtual MonitorElementPtr poll() = 0;
+    virtual void release(MonitorElementPtr const &amp; monitorElement) = 0;
+};
+
+class MonitorRequester : public virtual Requester {
+    virtual void monitorConnect(Status const &amp; status,
+        MonitorPtr const &amp; monitor, StructureConstPtr const &amp; structure) = 0;
+    virtual void monitorEvent(MonitorPtr const &amp; monitor) = 0;
+    virtual void unlisten(MonitorPtr const &amp; monitor) = 0;
+};
+</pre>
+<h4>monitorElement</h4>
+<p><b>MonitorElement</b> holds the data for one element of a monitor queue.
+It has the fields:
+<dl>
+  <dt>pvStructurePtr</dt>
+    <dd>A top level structure with data values at the time the monitors occurs.</dd>
+  <dt>changedBitSet</dt>
+     <dd>Shows which fields have changed since the previous monitor.</dd>
+  <dt>overrunBitSet</dt>
+     <dd>Shows which fields have changed more han once since the previous monitor.</dd>
+</dl>
+</p>
+<h4>monitorElement queue</h4>
+<p>
+A queue of monitor elements must be implemented by any channel provider that implements
+<b>Channel::createMonitor</b>.
+For an example implementation look at pvDatabaseCPP.
+It has the following:
+<pre>
+typedef Queue&lt;MonitorElement&gt; MonitorElementQueue;
+typedef std::tr1::shared_ptr&lt;MonitorElementQueue&gt; MonitorElementQueuePtr;
+
+class MultipleElementQueue :
+    public ElementQueue
+{
+public:
+    POINTER_DEFINITIONS(MultipleElementQueue);
+    virtual ~MultipleElementQueue(){}
+    MultipleElementQueue(
+        MonitorLocalPtr const &amp;monitorLocal,
+        MonitorElementQueuePtr const &amp;queue,
+        size_t nfields);
+    virtual void destroy(){}
+    virtual Status start();
+    virtual Status stop();
+    virtual bool dataChanged();
+    virtual MonitorElementPtr poll();
+    virtual void release(MonitorElementPtr const &amp;monitorElement);
+...
+};
+</pre>
+<h4>Monitor</h4>
+<p><b>Monitor</b> must be implemented by any channel provider that implements
+<b>Channel::createMonitor</b>.
+Remote PVAccess also implements Monitor on the client side.
+Note that each client has it's own queue that is not shared with other client.
+</p>
+<p>Monitor has the following methods:</p>
+<dl>
+   <dt>start</dt>
+     <dd>
+      Start monitoring.
+      This will result in a an initial monitor that has the current value
+      of all fields.
+     </dd>
+   <dt>stop</dt>
+     <dd>
+      Stop monitoring.
+     </dd>
+   <dt>poll</dt>
+     <dd>
+      Called to get a monitor element.
+      If no new elements are available then a null pointer is returned.
+     </dd>
+   <dt>release</dt>
+     <dd>
+      Release the monitor element.
+      The caller owns the monitor element between the calls to poll and release.
+     </dd>
+<dl>
+</dl>
+<h4>MonitorRequester</h4>
+<p>This must be implemented by a pvAccess client.
+It has the methods:</p>
+<dl>
+  <dt>monitorConnect</dt>
+     <dd>
+      A monitor has either connected of disconnected.
+     </dd>
+  <dt>monitorEvent</dt>
+     <dd>
+      A new monitor element is available.
+     </dd>
+  <dt>unlisten</dt>
+     <dd>
+      The channel is going away. The client cam no longer access the monitor.
+     </dd>
+</dl>
+
+<h3>monitorPlugin</h3>
+<pre>
+class MonitorPlugin
+{
+    virtual std::string const &amp; getName() = 0;
+    virtual bool causeMonitor(
+        PVFieldPtr const &amp;pvField,
+        PVStructurePtr const &amp;pvTop,
+        MonitorElementPtr const &amp;monitorElement) = 0;
+    virtual void monitorDone(
+        MonitorElementPtr const &amp;monitorElement);
+    virtual void startMonitoring();
+    virtual void stopMonitoring();
+    virtual void beginGroupPut();
+    virtual void endGroupPut();
+};
+
+class MonitorPluginCreator
+{
+    virtual MonitorPluginPtr create(
+        FieldConstPtr const &amp;field,
+        StructureConstPtr const &amp;top,
+        PVStructurePtr const &amp;pvFieldOptions) = 0;
+     virtual std::string const &amp; getName() = 0;
+}
+
+class MonitorPluginManager
+{
+    static MonitorPluginManagerPtr get();
+    bool addPlugin(
+         std::string const &amp;pluginName,
+         MonitorPluginCreatorPtr const &amp;creator);
+    MonitorPluginCreatorPtr findPlugin(std::string const &amp;pluginName);
+    void showNames();
+};
+
+</pre>
+<h4>MonitorPlugin</h4>
+<p><b>MonitorPlugin</b> must be implemented by the plugin implementation.
+It has methods:</p>
+<dl>
+   <dt>getName</dt>
+     <dd>Get the name of the plugin.</dd>
+   <dt>causeMonitor</dt>
+     <dd>
+       Should the value of pvField cause a monitor to be raised.
+       pvField and pvTop are fields in the top level structure
+       being monitored. monitorElement has the top level structure
+       for the copy</b>.
+       The implementation should <b>not</b> modify the fields in the structure
+        being monitored.
+        Called with pvTop locked.
+     </dd>
+   <dt>monitorDone</dt>
+     <dd>
+       Called just before monitorElement will be given to client.
+       The plugin can change the data values and bitSets in monitorElement.
+        Called with pvTop unlocked.
+    </dd>
+   <dt>startMonitoring</dt>
+     <dd>
+      Monitoring is starting.
+     </dd>
+   <dt>stopMonitoring</dt>
+     <dd>
+      Monitoring is being stopped.
+     </dd>
+   <dt>beginGroupPut</dt>
+     <dd>
+      A set of puts is starting.
+        Called with pvTop locked.
+     </dd>
+   <dt>endGroupPut</dt>
+     <dd>
+      The set of puts is complete.
+        Called with pvTop locked.
+     </dd>
+</dl>
+<h4>MonitorPluginCreator</h4>
+<p><b>MonitorPluginCreator</b> must also be implemented by the plugin implementation.
+It is called for each field instance that has options of the from
+<b>[plugin=name...]</b> where <b>name</b> is the name of the plugin.
+Note that a plugin instance will belong to a single client.
+It has methods:</p>
+<dl>
+   <dt>getName</dt>
+     <dd>Get the name of the plugin.</dd>
+   <dt>create</dt>
+     <dd>
+     Create a new plugin instance.
+     If the arguments are not compatible with the plugin a NULL shared pointer is
+     returned.<br/>
+    pvFieldOptions is
+      a structure with a set of PVString subfields that specify <b>name,value</b>
+      pairs. name is the subField name and value is the subField value.<br/>
+     Note that a plugin will below to a single client.
+    </dd>
+<dl>
+<h4>MonitorPluginManager</h4>
+<p><b>MonitorPluginManager</b> has the methods:</p>
+<dl>
+   <dt>get</dt>
+     <dd>
+     MonitorPluginManager is a singleton.
+     The first call to get will create the single instance.
+     Further calls will return the single instance.
+     </dd>
+   <dt>addPlugin</dt>
+     <dd>
+     Add a new plugin.
+     </dd>
+   <dt>findPlugin</dt>
+     <dd>
+      Find a plugin. A NULL shared pointer is returned if it has not been added.
+     </dd>
+   <dt>showNames</dt>
+     <dd>
+      Show the names of all plugins that have been added.
+     </dd>
+</dl>
+<p><b>NOTE:</b>
+Should the method <b>causeMonitor</b> 
+have arguments <b>pvField</b> and <b>pvTop</b>
+be defined so that they can not be modified.
+This would be possible if the following was defined:
+<pre>
+typedef std::tr1::shared_ptr&lt;const PVField&gt; PVFieldConstPtr;
+typedef std::tr1::shared_ptr&lt;const PVStructure&gt; PVStructureConstPtr;
+</pre>
+then the definition for causeMonitor could be:
+<pre>
+virtual bool causeMonitor(
+        PVFieldConstPtr const &amp;pvField,
+        PVStructureConstPtr const &amp;pvTop,
+        MonitorElementPtr const &amp;monitorElement) = 0;
+</pre>
+But just adding these definitions is not sufficient.
+In addition all methods defined in pvDataCPP must be checked.
+In particular many of the methods in <b>Convert</b> must have
+their arguments modified.
+Big job.
+</p>
+<h2>monitorPlugin example</h2>
+<h3>Example Plugin Overview</h3>
+<p>This section describes an example plugin that:</p>
+<ul>
+   <li>Only raises monitors when a field changes value.<br />
+     If no plugin is provided
+     the default is to raise a monitor when a put is issued to a field.</li>
+   <li>Optionally a change will not raise a monitor.<br />
+     The change will, however,
+     appear if a put to another field raise a monitor.</li>
+</ul>
+<p>As an example assume that a channel provided by pvAccess has a top level structure
+that represents a power supply.</p>
+<pre>
+structure powerSupply
+    structure alarm
+    structure timeStamp
+    structure power
+       double value
+       structure alarm
+       structure display
+    structure voltage
+       double value
+       structure alarm
+       structure display
+    structure current
+       double value
+       structure alarm
+       structure display
+</pre>
+<p>A pvAccess client wants to create a monitor on the powerSupply as follows:
+The client wants a top level structure that looks like:
+<pre>
+structure powerSupply
+    structure alarm
+    structure timeStamp
+    structure power
+       double value
+    structure voltage
+       double value
+    structure current
+       double value
+</pre>
+In addition the client wants monitors to occur only when one of the monitored
+fields changes value but not just because a put occured.
+Also if only the timeStamp changes value then that should not cause a monitor.
+</p>
+<p>The example monitor plugin implements the semantics the
+client wants. It can be attached to any field via the following options:
+<pre>
+[plugin=onChange,raiseMonitor=value]
+</pre>
+This plugin will trigger a monitor for the field only if the field changes
+value. In addition <b>value</b> equals <b>false</b> means do not raise a monitor
+for changes to this field.
+But if a change to another field does cause a monitor the change to this field
+will be passed to the client.
+</p>
+<p>
+Assume that the client has already connected to the channel.
+The client can then issue the commands:</p>
+<pre>
+std::string request("field(alarm[plugin=onChange]");
+request += ",timeStamp[plugin=onChange,raiseMonitor=false]";
+request += ",power.value[plugin=onChange";
+request += ",voltage.value[plugin=onChange";
+request += ",current.value[plugin=onChange";
+
+PVStructurePtr pvRequest = createRequest-&gt;createRequest(request);
+
+MonitorPtr monitor = channel-&gt;createMonitor(monitorRequester,pvRequest);
+</pre>
+<h3>Example Plugin Code</h3>
+<p>The header file to create the example has the definition:</p>
+<pre>
+class ExampleMonitorPlugin{
+public:
+    static void create();
+};
+</pre>
+<p>The implementation is:</p>
+<pre>
+class OnChangePlugin : public MonitorPlugin
+{
+public:
+    virtual ~OnChangePlugin(){}
+    OnChangePlugin() {}
+    bool init(
+        FieldConstPtr const &amp;field,
+        StructureConstPtr const &amp;top,
+        PVStructurePtr const &amp;pvFieldOptions)
+   {
+        pvField = getPVDataCreate()-&gt;createPVField(field);
+        raiseMonitor = true;
+        if(pvFieldOptions!=NULL) {
+            PVStringPtr pvString =
+                pvFieldOptions-&gt;getSubField&lt;PVString&gt;("raiseMonitor");
+                if(pvString!=NULL) {
+                    std::string value = pvString-&gt;get();
+                    if(value.compare("false")==0) raiseMonitor = false;
+                }
+        }
+        return true;
+   }
+   virtual std::string &amp;getName(){return pluginName;}
+   virtual bool causeMonitor(
+        PVFieldPtr const &amp;pvNew,
+        PVStructurePtr const &amp;pvTop,
+        MonitorElementPtr const &amp;monitorElement)
+   {
+       bool isSame = convert-&gt;equals(pvNew,pvField);
+       if(isSame) return false;
+       convert-&gt;copy(pvNew,pvField);
+       return raiseMonitor;
+   }
+private:
+   PVFieldPtr pvField;
+   bool raiseMonitor;
+};
+class OnChangePluginCreator : public MonitorPluginCreator
+{
+public:
+    virtual std::string &amp;getName(){return pluginName;}
+    virtual MonitorPluginPtr create(
+        FieldConstPtr const &amp;field,
+        StructureConstPtr const &amp;top,
+        PVStructurePtr const &amp;pvFieldOptions)
+   {
+       OnChangePluginPtr plugin(new OnChangePlugin());
+       bool result = plugin-&gt;init(field,top,pvFieldOptions);
+       if(!result) return MonitorPluginPtr();
+       return plugin;
+   }
+
+};
+
+void ExampleMonitorPlugin::create()
+{
+    static OnChangePluginCreatorPtr plugin;
+    static Mutex mutex;
+    Lock xx(mutex);
+    if(plugin==NULL) {
+        plugin = OnChangePluginCreatorPtr(new OnChangePluginCreator());
+        MonitorPluginManager::get()-&gt;addPlugin(pluginName,plugin);
+    }
+}
+</pre>
+
+
+</div>
+</body>
+</html>

documentation/mainpage.dox

@@ -1,57 +0,0 @@
-#ifndef MAINPAGE_H
-#define MAINPAGE_H
-/**
-@mainpage pvDataCPP documentation
-
-- [Download](https://sourceforge.net/projects/epics-pvdata/files/)
-- @htmlonly <a href="modules.html">API components</a> @endhtmlonly
-- @ref release_notes
-
-The epics::pvData namespace.
-See pv/pvData.h header.
-
-@code
-#include <pv/pvData.h>
-#include <pv/createRequest.h>
-@endcode
-
-- Type description epics::pvData::Field and sub-classes
-- Value container epics::pvData::PVField and sub-classes
-- POD array handling epics::pvData::shared_vector
-- pvRequest parsing epics::pvData::createRequest()
-
-Define a structure type and create a container with default values.
-
-@code
-namespace pvd = epics::pvData;
-pvd::StructureConstPtr stype(pvd::FieldBuilder::begin()
-                        ->add("fld1", pvd::pvInt)
-                        ->addNestedStructure("sub")
-                            ->add("fld2", pvd::pvString)
-                        ->endNested()
-                        ->createStructure());
-
-pvd::PVStructuretPtr value(stype->build());
-
-value->getSubFieldT<pvd::PVInt>("fld1")->put(4); // store integer 4.  would throw if not pvInt
-value->getSubFieldT<pvd::PVScalar>("sub.fld2")->putFrom(4.2); // convert and store string "4.2"
-@endcode
-
-is equivalent to the following pseudo-code.
-
-@code
-struct stype {
-    pvd::int32 fld1;
-    struct {
-        std::string fld2;
-    } sub;
-};
-stype value;
-value.fld1 = 4;
-value.fld2 = pvd::castUnsafe<std::string>(4.2);
-@endcode
-
-*/
-
-#endif /* MAINPAGE_H */
-

documentation/pvDataCPPCookbook.txt

@@ -0,0 +1,179 @@
+pvDataCPP cookbook
+------------------
+
+
+Creating introspection data interfaces
+
+// create a scalar
+getFieldCreate()->createScalar(pvDouble);
+
+// create a scalar array
+getFieldCreate()->createScalarArray(pvDouble);
+
+// create a structure
+getFieldCreate()->createFieldBuilder()->
+    setId("enum_t")->
+    add("index", pvDouble)->
+    addArray("choices", pvString)->
+    createStructure();
+
+// create a structure (cntd.)
+StructureConstPtr enum_t = 
+    getFieldCreate()->createFieldBuilder()->
+        setId("enum_t")->
+        add("index", pvInt)->
+        addArray("choices", pvString)->
+        createStructure();
+
+// create a structure (cntd.)
+StructureConstPtr ntEnum = 
+    getFieldCreate()->createFieldBuilder()->
+        setId("epics:nt/NTEnum:1.0")->
+        add("value", enum_t)->
+        addNestedStructure("timeStamp")->
+            setId("time_t")->
+            add("secondsPastEpoch", pvLong)->
+            add("nanoseconds", pvInt)->
+            add("userTag", pvInt)->
+            endNested()->
+        createStructure();
+
+// create an union == same as structure
+
+---
+
+Creating data containers
+
+// create a scalar
+PVDouble::shared_pointer doubleValue = getPVDataCreate()->createPVScalar<PVDouble>();
+
+// create a scalar array
+PVDoubleArray::shared_pointer doubleArrayValue = getPVDataCreate()->createPVScalarArray<PVDouble>();
+
+// create a structure 
+PVStructure::shared_pointer struct = getPVDataCreate()->createPVStructure(ntEnum);
+
+// create an union
+PVUnion::shared_pointer pvUnion = getPVDataCreate()->createPVUnion(unionIF);
+
+// create a structure array
+PVStructureArray::shared_pointer structArray = getPVDataCreate()->createPVStructureArray(ntEnum);
+
+
+// scalar usage
+PVInt::shared_pointer index = struct->getSubField<PVInt>("value.index");
+int32 ix = index->get();
+index->put(3);
+std::cout << *index << std::endl;
+
+
+// using <<=, >>= operators to get/set
+*doubleValue <<= 12.3;
+
+double val;
+*doubleValue >>= val;
+
+
+
+// array usage
+PVStringArray::shared_pointer choices = struct->getSubField<PVStringArray>("value.choices");
+
+// use view() to access read-only data
+PVStringArray::const_svector data(choices->view());
+for (std::size_t i = 0; i < data.size(); i++)
+    std::cout << data[i] << std::endl;
+    
+// use replace() to put new data
+PVStringArray::svector newdata;
+newdata.push_back("zero");
+newdata.push_back("one");
+newdata.push_back("two");
+choices->replace(freeze(newdata));
+
+// (add more use-cases) here
+
+// print entire array
+std::cout << *choices << std::endl;
+
+// print elmenet at index == 1
+std::cout << format::array_at(1) << *choices << std::endl;
+
+----
+
+Union handling
+
+
+Union::const_shared_pointer punion =
+    getFieldCreate()->createFieldBuilder()->
+        add("doubleValue", pvDouble)->
+        add("intValue", pvInt)->
+        createUnion();
+                            
+PVUnion::shared_pointer u = getPVDataCreate()->createPVUnion(punion);
+
+// select and put
+// this create a new instance of PVDouble (everytime select() is called)
+PVDouble::shared_pointer doubleValue = u->select<PVDouble>("doubleValue");
+doubeValue->put(12);
+// select using index (and direct put)
+u->select<PVDouble>(0)->put(12);
+// select using existing PVField (PVUnion stores by-reference)
+u->set("doubleValue", doubleValue);
+
+// get selected field name or index
+std::string selectedFN = u->getSelectedFieldName();
+int32 selectedIndex = u->getSelectedIndex();
+
+// get currently selected (knowing it's PVDouble)
+PVDouble value = u->get<PVDouble>();
+
+
+
+Variant Union handling
+
+
+PVUnion::shared_pointer any = getPVDataCreate()->createPVVariantUnion();
+
+PVDouble::shared_pointer doubleValue = getPVDataCreate()->createPVScalar<PVDouble>();
+doubleValue->put(12.8);
+any->set(doubleValue);
+
+PVDouble::shared_pointer doubleValue2 = any->get<PVDouble>();
+
+// variant union work by-reference (pointers match also)
+// doubleValue.get() == doubleValue2.get()
+
+
+
+------
+
+Convert
+
+
+// convert to int
+int32 i = doubleValue->getAs<int32>();
+
+// from int
+doubleValue->putFrom<int32>(i);
+
+// from string
+doubleValue->putFrom<std::string>("12.3");
+
+// from scalar field
+doubleValue->assign(pvScalar);
+
+
+
+// convert to int array
+PVIntArray::const_svector intData;
+doubleArrayValue->getAs<int32>(intData);
+
+// from string array
+PVStringArray::svector labels;
+labels.push_back("zero");
+labels.push_back("one");
+labels.push_back("two");
+doubleArrayValue->putFrom<std::string>(labels);
+
+// from scalar array 
+doubleArrayValue->assign(pvScalarArray);

examples/Makefile

@@ -1,14 +0,0 @@
-# Makefile for the examples
-# make sure they compile
-
-TOP = ..
-include $(TOP)/configure/CONFIG
-
-PROD_LIBS += pvData Com
-
-TESTPROD_HOST += unittest
-unittest_SRCS += unittest.cpp
-
-include $(TOP)/configure/RULES
-
-

examples/unittest.cpp

@@ -1,30 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-/* c++ unittest skeleton */
-
-#include <stdexcept>
-
-#include <testMain.h>
-
-#include <pv/pvUnitTest.h>
-#include <pv/epicsException.h>
-
-namespace {
-void testCase1() {
-    testEqual(1+1, 2);
-}
-} // namespace
-
-MAIN(testUnitTest)
-{
-    testPlan(1);
-    try {
-        testCase1();
-    }catch(std::exception& e){
-        PRINT_EXCEPTION(e); // print stack trace if thrown with THROW_EXCEPTION()
-        testAbort("Unhandled exception: %s", e.what());
-    }
-    return testDone();
-}

jenkins/cloudbees_build

@@ -21,15 +21,23 @@ installE4 () {
     local module=$1
     local branch=$2
 
-    wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE}/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
+    # If microbench version does not exist, try without
+    if [ "${MB}" = "WITH_MICROBENCH" ]; then
+        if ! wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE},MB=WITH_MICROBENCH/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz; then
+            wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE},MB=NO_MICROBENCH/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
+        fi
+    else
+        wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE},MB=NO_MICROBENCH/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
+    fi
     tar -xzf ${module}.CB-dist.tar.gz
 }
 
 ###########################################
-# Defaults for EPICS Base
+# Defaults for EPICS Base and MB
 
 DEFAULT_BASE=3.15.4
 BASE=${BASE:-${DEFAULT_BASE}}
+MB=${MB:-"NO_MICROBENCH"}
 
 ###########################################
 # Fetch and unpack dependencies
@@ -65,6 +73,6 @@ make distclean all
 make runtests
 
 ###########################################
-# Create cache
+# Create distribution
 
-tar czf pvData.CB-dist.tar.gz lib include cfg LICENSE
+tar czf pvData.CB-dist.tar.gz lib include LICENSE

jenkins/cloudbees_doc

@@ -21,7 +21,14 @@ installE4 () {
     local module=$1
     local branch=$2
 
-    wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE}/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
+    # If microbench version does not exist, try without
+    if [ "${MB}" = "WITH_MICROBENCH" ]; then
+        if ! wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE},MB=WITH_MICROBENCH/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz; then
+            wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE},MB=NO_MICROBENCH/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
+        fi
+    else
+        wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE},MB=NO_MICROBENCH/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
+    fi
     tar -xzf ${module}.CB-dist.tar.gz
 }
 
@@ -31,6 +38,7 @@ installE4 () {
 BASE=3.15.4
 PUBLISH=${PUBLISH:-NO}
 BRANCH=${BRANCH:-master}
+MB=NO_MICROBENCH
 
 ###########################################
 # Fetch and unpack dependencies

src/Makefile

@@ -11,26 +11,14 @@ include $(PVDATA_SRC)/factory/Makefile
 include $(PVDATA_SRC)/property/Makefile
 include $(PVDATA_SRC)/copy/Makefile
 include $(PVDATA_SRC)/pvMisc/Makefile
-include $(PVDATA_SRC)/json/Makefile
+include $(PVDATA_SRC)/monitor/Makefile
 
 LIBRARY = pvData
 
 pvData_LIBS += Com
 
-EXPANDVARS += EPICS_PVD_MAJOR_VERSION
-EXPANDVARS += EPICS_PVD_MINOR_VERSION
-EXPANDVARS += EPICS_PVD_MAINTENANCE_VERSION
-EXPANDVARS += EPICS_PVD_DEVELOPMENT_FLAG
-
-EXPANDFLAGS += $(foreach var,$(EXPANDVARS),-D$(var)="$(strip $($(var)))")
-
 # shared library ABI version.
-SHRLIB_VERSION = $(EPICS_PVD_MAJOR_VERSION).$(EPICS_PVD_MINOR_VERSION).$(EPICS_PVD_MAINTENANCE_VERSION)
+SHRLIB_VERSION ?= 6.0
 
 include $(TOP)/configure/RULES
 
-# Can't use EXPAND as generated headers must appear
-# in O.Common, but EXPAND emits rules for O.$(T_A)
-../O.Common/pv/pvdVersionNum.h: ../pv/pvdVersionNum.h@
-	$(MKDIR) $(COMMON_DIR)/pv
-	$(EXPAND_TOOL) $(EXPANDFLAGS) $($@_EXPANDFLAGS) $< $@

src/copy/Makefile

@@ -6,5 +6,4 @@ INC += pv/createRequest.h
 INC += pv/pvCopy.h
 
 LIBSRCS += createRequest.cpp
-LIBSRCS += requestmapper.cpp
 LIBSRCS += pvCopy.cpp

src/copy/createRequest.cpp

@@ -22,13 +22,13 @@ using std::endl;
 using std::string;
 using std::vector;
 
-namespace {
-using namespace epics::pvData;
+namespace epics { namespace pvData {
 
 static PVDataCreatePtr pvDataCreate = getPVDataCreate();
 static FieldCreatePtr fieldCreate = getFieldCreate();
 
-struct CreateRequestImpl {
+class CreateRequestImpl : public CreateRequest {
+private:
 
     struct Node 
     {
@@ -54,7 +54,12 @@ struct CreateRequestImpl {
     string fullFieldName;
 
 
-    CreateRequestImpl() {}
+public:
+    CreateRequestImpl()
+    {
+        fullFieldName = "";
+    }
+private:
          
 
     void removeBlanks(string& str)
@@ -70,7 +75,8 @@ struct CreateRequestImpl {
         size_t openBrace = request.find('{', index+1);
         size_t closeBrace = request.find('}', index+1);
         if(openBrace == string::npos && closeBrace == string::npos){
-             throw std::runtime_error(request + " mismatched {}");
+             message = request + " mismatched {}";
+             throw std::logic_error("message");
         }
         if (openBrace != string::npos && openBrace!=0) {
             if(openBrace<closeBrace) return findMatchingBrace(request,openBrace,numOpen+1);
@@ -85,12 +91,14 @@ struct CreateRequestImpl {
         for(size_t i=index+1; i< request.size(); ++i) {
             if(request[i] == ']') {
                 if(i==index+1) {
-                     throw std::runtime_error(request + " mismatched []");
+                     message = request + " mismatched []";
+                     throw std::logic_error("message");
                 }
                 return i;
             }
         }
-        throw std::runtime_error(request + " missing ]");
+        message = request + " missing ]";
+        throw std::logic_error("message");
     }
 
     size_t findEndField(string& request) {
@@ -145,7 +153,7 @@ struct CreateRequestImpl {
         string const & request)
     {
         if(request.length()<=1) {
-            throw std::runtime_error("logic error empty options");
+            throw std::logic_error("logic error empty options");
         }
         vector<Node> top;
         vector<string> items = split(request);
@@ -155,7 +163,8 @@ struct CreateRequestImpl {
             string item = items[j];
             size_t equals = item.find('=');
             if(equals==string::npos || equals==0) {
-                throw std::runtime_error(item + " illegal option " + request);
+                message = item + " illegal option " + request;
+                throw std::logic_error("message");
             }
             top.push_back(Node(item.substr(0,equals)));
             string name = fullFieldName + "._options." + item.substr(0,equals);
@@ -204,7 +213,7 @@ struct CreateRequestImpl {
         if(end==0) end = request.size();
         string name = request.substr(0,end);
         if(name.size()<1) {
-            throw std::runtime_error("null field name " + request);
+            throw std::logic_error("null field name " + request);
         }
         string saveFullName = fullFieldName;
         fullFieldName += "." + name;
@@ -227,7 +236,7 @@ struct CreateRequestImpl {
         if(chr=='.') {
             request = request.substr(end+1);
             if(request.size()==string::npos || request.size()<1) {
-                throw std::runtime_error("null field name " + request);
+                throw std::logic_error("null field name " + request);
             }
             Node subNode(name);
             if(optionNode.name.size()>0) subNode.nodes.push_back(optionNode);
@@ -248,11 +257,11 @@ struct CreateRequestImpl {
         if(chr=='{') {
             size_t endBrace = findEndField(request);
             if((end+1)>=(endBrace-1)) {
-                throw std::runtime_error("illegal syntax " + request);
+                throw std::logic_error("illegal syntax " + request);
             }
             string subRequest = request.substr(end+1,endBrace-1 -end -1);
             if(subRequest.size()<1) {
-                throw std::runtime_error("empty {} " + request);
+                throw std::logic_error("empty {} " + request);
             }
             Node subNode(name);
             if(optionNode.name.size()>0) subNode.nodes.push_back(optionNode);
@@ -268,7 +277,7 @@ struct CreateRequestImpl {
             createSubNode(node,request);
             return;
         }
-        throw std::runtime_error("logic error");
+        throw std::logic_error("logic error");
     }
 
     FieldConstPtr createSubStructure(vector<Node> & nodes)
@@ -309,16 +318,17 @@ struct CreateRequestImpl {
         return structure;
     }
 
+public:
 
-    PVStructurePtr createRequest(
+    virtual PVStructurePtr createRequest(
         string const & crequest)
     {
-        {
+        try {
             string request = crequest;
             if (!request.empty()) removeBlanks(request);
             if (request.empty())
             {
-                return fieldCreate->createStructure()->build();
+                return pvDataCreate->createPVStructure(fieldCreate->createStructure());
             }
             size_t offsetRecord = request.find("record[");
             size_t offsetField = request.find("field(");
@@ -347,17 +357,20 @@ struct CreateRequestImpl {
             if(numParan!=0) {
                 ostringstream oss;
                 oss << "mismatched () " << numParan;
-                throw std::runtime_error(oss.str());
+                message = oss.str();
+                return PVStructurePtr();
             }
             if(numBrace!=0) {
                 ostringstream oss;
                 oss << "mismatched {} " << numBrace;
-                throw std::runtime_error(oss.str());
+                message = oss.str();
+                return PVStructurePtr();
             }
             if(numBracket!=0) {
                 ostringstream oss;
                 oss << "mismatched [] " << numBracket;
-                throw std::runtime_error(oss.str());
+                message = oss.str();
+                return PVStructurePtr();
             }
             vector<Node> top;
             try {
@@ -366,8 +379,9 @@ struct CreateRequestImpl {
                     size_t openBracket = request.find('[', offsetRecord);
                     size_t closeBracket = request.find(']', openBracket);
                     if(closeBracket==string::npos) {
-                        throw std::runtime_error(request.substr(offsetRecord) +
-                            "record[ does not have matching ]");
+                        message = request.substr(offsetRecord) +
+                            "record[ does not have matching ]";
+                        return PVStructurePtr();
                     }
                     if(closeBracket-openBracket > 3) {
                         Node node("record");
@@ -383,8 +397,9 @@ struct CreateRequestImpl {
                     size_t openParan = request.find('(', offsetField);
                     size_t closeParan = request.find(')', openParan);
                     if(closeParan==string::npos) {
-                        throw std::runtime_error(request.substr(offsetField)
-                                + " field( does not have matching )");
+                        message = request.substr(offsetField)
+                                + " field( does not have matching )";
+                        return PVStructurePtr();
                     }
                     if(closeParan>openParan+1) {
                         createSubNode(node,request.substr(openParan+1,closeParan-openParan-1));
@@ -397,8 +412,9 @@ struct CreateRequestImpl {
                     size_t openParan = request.find('(', offsetGetField);
                     size_t closeParan = request.find(')', openParan);
                     if(closeParan==string::npos) {
-                        throw std::runtime_error(request.substr(offsetField)
-                                + " getField( does not have matching )");
+                        message = request.substr(offsetField)
+                                + " getField( does not have matching )";
+                        return PVStructurePtr();
                     }
                     if(closeParan>openParan+1) {
                         createSubNode(node,request.substr(openParan+1,closeParan-openParan-1));
@@ -411,8 +427,9 @@ struct CreateRequestImpl {
                     size_t openParan = request.find('(', offsetPutField);
                     size_t closeParan = request.find(')', openParan);
                     if(closeParan==string::npos) {
-                        throw std::runtime_error(request.substr(offsetField)
-                                + " putField( does not have matching )");
+                        message = request.substr(offsetField)
+                                + " putField( does not have matching )";
+                        return PVStructurePtr();
                     }
                     if(closeParan>openParan+1) {
                         createSubNode(node,request.substr(openParan+1,closeParan-openParan-1));
@@ -420,7 +437,9 @@ struct CreateRequestImpl {
                     top.push_back(node);
                 }
             } catch (std::exception &e) {
-                throw std::runtime_error(std::string("while creating Structure exception ")+e.what());
+                string xxx = e.what();
+                message = "while creating Structure exception " + xxx;
+                return PVStructurePtr();
             }
             size_t num = top.size();
             StringArray names(num);
@@ -437,7 +456,7 @@ struct CreateRequestImpl {
             }
             StructureConstPtr structure = fieldCreate->createStructure(names, fields);
             if(!structure) throw std::invalid_argument("bad request " + crequest);
-            PVStructurePtr pvStructure = structure->build();
+            PVStructurePtr pvStructure = pvDataCreate->createPVStructure(structure);
             for(size_t i=0; i<optionList.size(); ++i) {
                 OptionPair pair = optionList[i];
                 string name = pair.name;
@@ -448,39 +467,20 @@ struct CreateRequestImpl {
             }
             optionList.clear();
             return pvStructure;
+        } catch (std::exception &e) {
+             message = e.what();
+             return PVStructurePtr();
         }
     }
 
 
 };
 
-} // namespace
-
-namespace epics {namespace pvData {
-
 CreateRequest::shared_pointer CreateRequest::create()
 {
-    CreateRequest::shared_pointer createRequest(new CreateRequest());
+    CreateRequest::shared_pointer createRequest(new CreateRequestImpl());
     return createRequest;
 }
 
-PVStructure::shared_pointer CreateRequest::createRequest(std::string const & request)
-{
-    message.clear();
-    try {
-        return ::createRequest(request);
-    } catch(std::exception& e) {
-        message = e.what();
-        return PVStructure::shared_pointer();
-    }
-}
-
-PVStructure::shared_pointer createRequest(std::string const & request)
-{
-    CreateRequestImpl I;
-    return I.createRequest(request);
-}
-
-
-}} // namespace
+}}
 

src/copy/pv/createRequest.h

@@ -8,18 +8,14 @@
 #define CREATEREQUEST_H
 #include <string>
 #include <sstream>
-#include <vector>
 
 #include <pv/pvData.h>
 #include <pv/lock.h>
-#include <pv/bitSet.h>
 
 #include <shareLib.h>
 
 namespace epics { namespace pvData {
 
-class BitSet;
-
 /**
  * @brief Create pvRequest structure for Channel methods.
  *
@@ -36,7 +32,7 @@ class epicsShareClass CreateRequest {
      * @returns A shared pointer to the new instance.
      */
     static CreateRequest::shared_pointer create();
-    ~CreateRequest() {};
+    virtual ~CreateRequest() {};
     /**
     * Create a request structure for the create calls in Channel.
     * See the package overview documentation for details.
@@ -45,7 +41,7 @@ class epicsShareClass CreateRequest {
     * If a NULL PVStructure is returned then getMessage will return
     * the reason.
     */
-    PVStructure::shared_pointer createRequest(std::string const & request);
+    virtual PVStructure::shared_pointer createRequest(std::string const & request) = 0;
     /**
      * Get the error message of createRequest returns NULL
      * return the error message
@@ -56,176 +52,6 @@ protected:
     std::string message;
 };
 
-/** Parse and build pvRequest structure.
- *
- @params request the Request string to be parsed.  eg. "field(value)"
- @returns The resulting strucuture.  Never NULL
- @throws std::exception for various parsing errors
- */
-epicsShareExtern
-PVStructure::shared_pointer createRequest(std::string const & request);
-
-/** Helper for implementations of epics::pvAccess::ChannelProvider in interpreting the
- *  'field' substructure of a pvRequest.
- *  Copies between an internal (base) Structure, and a client/user visible (requested) Structure.
- *
- * @note PVRequestMapper is not re-entrant.  It is copyable and swap()able.
- */
-class epicsShareClass PVRequestMapper {
-public:
-    enum mode_t {
-        /** Masking mode.
-         *
-         * Requested Structure is identical to Base.
-         * The 'field' substructure of the provided pvRequest is used to construct a BitSet
-         * where the bits corresponding to the "selected" fields are set.  This mask can be
-         * access via. requestedMask().  The copy* and mask* methods operate only
-         * on "selected" fields.
-         */
-        Mask,
-        /** Slice mode
-         *
-         * The Requested Structure is a strict sub-set of the Base Structure containing
-         * those fields "selected" by the 'field' substructure of the provided pvRequest.
-         */
-        Slice,
-    };
-
-    PVRequestMapper();
-    //! @see compute()
-    PVRequestMapper(const PVStructure& base,
-                    const PVStructure& pvRequest,
-                    mode_t mode = Mask);
-
-    //! return to state of default ctor
-    void reset();
-
-    //! @returns the Structure of the PVStructure previously passed to compute().  NULL if never computed()'d
-    inline const StructureConstPtr& base() const { return typeBase; }
-    //! @returns the Structure which is the selected sub-set of the base Structure.  NULL if never computed()'d
-    inline const StructureConstPtr& requested() const { return typeRequested; }
-
-    /** A mask of all fields in the base structure which are also in the requested structure,
-     *  and any parent/structure "compress" bits.  eg. bit 0 is always set.
-     *
-     @code
-     PVRequestMapper mapper(...);
-     ...
-     BitSet changed = ...; // a base changed mask
-     bool wouldcopy = changed.logical_and(mapper.requestedMask());
-     // wouldcopy==false means that copyBaseToRequested(..., changed, ...) would be a no-op
-     @endcode
-     *
-     * eg. allows early detection of empty monitor updates.
-     */
-    inline const BitSet& requestedMask() const { return maskRequested; }
-
-    //! @returns A new instance of the requested() Structure
-    PVStructurePtr buildRequested() const;
-    //! @returns A new instance of the base() Structure
-    PVStructurePtr buildBase() const;
-
-    /** (re)compute the selected subset of provided base structure.
-     * @param base A full base structure.
-     *             Must be "top level" (field offset zero).
-     * @param pvRequest The user/client provided request modifier
-     * @param mode Control how the mapping is constructed.  @see mode_t for a description of mapping modes.
-     *
-     * @post Updates warnings()
-     * @throws std::runtime_error For errors involving invalid pvRequest
-     * @throws std::logic_error if the provided base is not a "top level" PVStructure.
-     */
-    void compute(const PVStructure& base,
-                 const PVStructure& pvRequest,
-                 mode_t mode = Mask);
-
-    //! After compute(), check if !warnings().empty()
-    inline const std::string& warnings() const { return messages; }
-
-    /** Copy field values from Base structure into Requested structure
-     *
-     * @param base An instance of the base Structure.  Field values are copied from it.
-     *                Need not be the same instance passed to compute().
-     * @param baseMask A bit mask selecting those base fields to copy.
-     * @param request An instance of the requested() Structure.  Field values are copied to it.
-     * @param requestMask A bit mask indicating which requested fields were copied.
-     *                    BitSet::clear() is not called.
-     */
-    void copyBaseToRequested(
-            const PVStructure& base,
-            const BitSet& baseMask,
-            PVStructure& request,
-            BitSet& requestMask
-    ) const;
-
-    /** Copy field values into Base structure from Requested structure
-     *
-     * @param base An instance of the base Structure.  Field values are copied into it.
-     *             Need not be the same instance passed to compute().
-     * @param baseMask A bit mask indicating which base fields were copied.
-     *                 BitSet::clear() is not called.
-     * @param request An instance of the requested() Structure.  Field values are copied from it.
-     * @param requestMask A bit mask selecting those requested fields to copy.
-     */
-    void copyBaseFromRequested(
-            PVStructure& base,
-            BitSet& baseMask,
-            const PVStructure& request,
-            const BitSet& requestMask
-    ) const;
-
-    //! Translate Base bit mask into requested bit mask.
-    //! BitSet::clear() is not called.
-    inline void maskBaseToRequested(
-            const BitSet& baseMask,
-            BitSet& requestMask
-            ) const
-    { _mapMask(baseMask, requestMask, false); }
-
-    //! Translate requested bit mask into base bit mask.
-    //! BitSet::clear() is not called.
-    inline void maskBaseFromRequested(
-            BitSet& baseMask,
-            const BitSet& requestMask
-            ) const
-    { _mapMask(requestMask, baseMask, true); }
-
-    //! Exchange contents of two mappers.  O(0) and never throws.
-    void swap(PVRequestMapper& other);
-
-private:
-    bool _compute(const PVStructure& base, const PVStructure& pvReq,
-                  FieldBuilderPtr& builder, bool keepids, unsigned depth);
-
-    void _map(const PVStructure& src,
-              const BitSet& maskSrc,
-              PVStructure& dest,
-              BitSet& maskDest,
-              bool dir_r2b) const;
-    void _mapMask(const BitSet& maskSrc,
-                  BitSet& maskDest,
-                  bool dir_r2b) const;
-
-    StructureConstPtr typeBase, typeRequested;
-    BitSet maskRequested;
-    // Map between field offsets of base and requested Structures.
-    // Include all fields, both leaf and sub-structure.
-    struct Mapping {
-        size_t to; // offset in destination Structure
-        BitSet tomask,   // if !leaf these are the other bits in the destination mask to changed
-               frommask; // if !leaf these are the other bits in the source mask to be copied
-        bool valid; // only true in (sparse) base -> requested mapping
-        bool leaf; // not a (sub)Structure?
-        Mapping() :valid(false) {}
-        Mapping(size_t to, bool leaf) :to(to), valid(true), leaf(leaf) {}
-    };
-    typedef std::vector<Mapping> mapping_t;
-    mapping_t base2req, req2base;
-
-    std::string messages;
-
-    mutable BitSet scratch; // avoid temporary allocs.  (we aren't re-entrant!)
-};
 
 }}
 

src/copy/pv/pvCopy.h

@@ -13,7 +13,6 @@
 #include <stdexcept>
 #include <memory>
 
-#include <compilerDependencies.h>
 #include <shareLib.h>
 
 #include <pv/pvData.h>
@@ -59,7 +58,7 @@ typedef std::tr1::shared_ptr<CopyStructureNode> CopyStructureNodePtr;
  * Class that manages one or more PVStructures that holds an arbitrary subset of the fields
  * in another PVStructure called master.
  */
-class epicsShareClass EPICS_DEPRECATED PVCopy :
+class epicsShareClass PVCopy : 
     public std::tr1::enable_shared_from_this<PVCopy>
 {
 public:
@@ -76,7 +75,7 @@ public:
         PVStructurePtr const &pvRequest,
         std::string const & structureName);
     virtual ~PVCopy(){}
-    void destroy();
+    virtual void destroy();
     /**
      * Get the top-level structure of master
      * @returns The master top-level structure.

src/copy/pvCopy.cpp

@@ -13,9 +13,6 @@
 #include <sstream>
 
 #include <epicsThread.h>
-#include <compilerDependencies.h>
-#undef EPICS_DEPRECATED
-#define EPICS_DEPRECATED
 
 #define epicsExportSharedSymbols
 
@@ -44,6 +41,13 @@ static void newLine(string *buffer, int indentLevel)
     *buffer += string(indentLevel*4, ' ');
 }
 
+static PVCopyPtr NULLPVCopy;
+static FieldConstPtr NULLField;
+static StructureConstPtr NULLStructure;
+static PVStructurePtr NULLPVStructure;
+static CopyNodePtr NULLCopyNode;
+static CopyMasterNodePtr NULLCopyMasterNode;
+
 struct CopyNode {
     CopyNode()
     : isStructure(false),
@@ -76,12 +80,12 @@ PVCopyPtr PVCopy::create(
     if(structureName.size()>0) {
         if(pvRequest->getStructure()->getNumberFields()>0) {
             pvStructure = pvRequest->getSubField<PVStructure>(structureName);
-            if(!pvStructure) return PVCopyPtr();
+            if(!pvStructure) return NULLPVCopy;
         }
     } else if(pvStructure->getSubField<PVStructure>("field")) {
         pvStructure = pvRequest->getSubField<PVStructure>("field");
     }
-    PVCopyPtr pvCopy(new PVCopy(pvMaster));
+    PVCopyPtr pvCopy = PVCopyPtr(new PVCopy(pvMaster));
     bool result = pvCopy->init(pvStructure);
     if(!result) pvCopy.reset();
     return pvCopy;
@@ -143,7 +147,7 @@ PVStructurePtr PVCopy::getOptions(std::size_t fieldOffset)
     while(true) {
         if(!node->isStructure) {
             if(node->structureOffset==fieldOffset) return node->options;
-            return PVStructurePtr();
+            return NULLPVStructure;
         }
         CopyStructureNodePtr structNode = static_pointer_cast<CopyStructureNode>(node);
         CopyNodePtrArrayPtr nodes = structNode->nodes;
@@ -154,7 +158,7 @@ PVStructurePtr PVCopy::getOptions(std::size_t fieldOffset)
             if(fieldOffset>=soff && fieldOffset<soff+node->nfields) {
                 if(fieldOffset==soff) return node->options;
                 if(!node->isStructure) {
-                    return PVStructurePtr();
+                    return NULLPVStructure;
                 }
                 okToContinue = true;
                 break;
@@ -388,7 +392,7 @@ StructureConstPtr PVCopy::createStructure(
     PVFieldPtrArray const &pvFromRequestFields = pvFromRequest->getPVFields();
     StringArray const &fromRequestFieldNames = pvFromRequest->getStructure()->getFieldNames();
     size_t length = pvFromRequestFields.size();
-    if(length==0) return StructureConstPtr();
+    if(length==0) return NULLStructure;
     FieldConstPtrArray fields; fields.reserve(length);
     StringArray fieldNames; fields.reserve(length);
     for(size_t i=0; i<length; ++i) {
@@ -418,7 +422,7 @@ StructureConstPtr PVCopy::createStructure(
         fields.push_back(field);
     }
     size_t numsubfields = fields.size();
-    if(numsubfields==0) return StructureConstPtr();
+    if(numsubfields==0) return NULLStructure;
     return getFieldCreate()->createStructure(fieldNames, fields);
 }
 
@@ -626,7 +630,7 @@ CopyMasterNodePtr PVCopy::getCopyOffset(
             if(masterNode) return masterNode;
         }
     }
-    return CopyMasterNodePtr();
+    return NULLCopyMasterNode;
 }
 
 CopyMasterNodePtr PVCopy::getMasterNode(
@@ -646,7 +650,7 @@ CopyMasterNodePtr PVCopy::getMasterNode(
             static_pointer_cast<CopyStructureNode>(node);
         return  getMasterNode(subNode,structureOffset);
     }
-    return CopyMasterNodePtr();
+    return NULLCopyMasterNode;
 }
 
 }}

src/copy/requestmapper.cpp

@@ -1,328 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-#include <sstream>
-
-#include <epicsAssert.h>
-#include <epicsTypes.h>
-#include <epicsVersion.h>
-#include <epicsConvert.h>
-#include <epicsAssert.h>
-#include <epicsMutex.h>
-#include <epicsGuard.h>
-
-#define epicsExportSharedSymbols
-#include <pv/createRequest.h>
-#include <pv/epicsException.h>
-#include <pv/bitSet.h>
-
-// Our arbitrary limit on pvRequest structure depth to bound stack usage during recursion
-static const unsigned maxDepth = 5;
-
-namespace epics{namespace pvData {
-
-PVRequestMapper::PVRequestMapper() {}
-
-PVRequestMapper::PVRequestMapper(const PVStructure &base,
-                                 const PVStructure &pvRequest,
-                                 mode_t mode)
-{
-    compute(base, pvRequest, mode);
-}
-
-PVStructurePtr PVRequestMapper::buildRequested() const
-{
-    if(!typeRequested)
-        THROW_EXCEPTION2(std::logic_error, "No mapping compute()d");
-    return typeRequested->build();
-}
-
-PVStructurePtr PVRequestMapper::buildBase() const
-{
-    if(!typeBase)
-        THROW_EXCEPTION2(std::logic_error, "No mapping compute()d");
-    return typeBase->build();
-}
-
-void PVRequestMapper::compute(const PVStructure &base,
-                              const PVStructure &pvRequest,
-                              mode_t mode)
-{
-    if(base.getFieldOffset()!=0)
-        THROW_EXCEPTION2(std::logic_error, "Mapper must be used with top level PVStructure");
-
-    bool ok = true;
-
-    // we want to be transactional, which requires a second copy of everything.
-    PVRequestMapper temp;
-
-    // whether to preserve IDs of partial structures.
-    bool keepids = false;
-    PVScalar::const_shared_pointer pbp(pvRequest.getSubField<PVScalar>("record._options.keepIDs"));
-    try {
-        if(pbp) keepids = pbp->getAs<boolean>();
-    }catch(std::runtime_error& e){
-        std::ostringstream msg;
-        msg<<"Can't parse keepIDs : '"<<e.what()<<"' ";
-        temp.messages+=msg.str();
-    }
-
-    PVStructure::const_shared_pointer fields(pvRequest.getSubField<PVStructure>("field"));
-    if(!fields || fields->getPVFields().empty()) {
-        // not selection, or empty selection, treated as select all
-        temp.typeBase = temp.typeRequested = base.getStructure();
-
-        for(size_t i=1, N=base.getNextFieldOffset(); i<N; i++)
-            temp.maskRequested.set(i);
-
-    } else {
-        FieldBuilderPtr builder(getFieldCreate()->createFieldBuilder());
-
-        if(keepids)
-            builder = builder->setId(base.getStructure()->getID());
-
-        ok &= temp._compute(base, *fields, builder, keepids, 0); // fills in builder
-
-        temp.typeBase = base.getStructure();
-        temp.typeRequested = builder->createStructure();
-        // possible that typeBase==typeRequested if all fields explicitly selected
-    }
-
-    if(mode==Mask) {
-        // short circuit use of masked Structure, but keep maskRequested
-        temp.typeRequested = temp.typeBase;
-    }
-
-    {
-        PVStructurePtr proto(temp.typeRequested->build());
-
-        // base -> request may be sparce mapping
-        temp.base2req.resize(base.getNextFieldOffset());
-        // request -> base is dense mapping
-        temp.req2base.resize(proto->getNextFieldOffset());
-
-        // special handling for whole structure mapping.  in part because getSubField(0) isn't allowed
-        temp.base2req[0] = Mapping(0, false);
-        temp.req2base[0] = Mapping(0, false);
-
-        // Iterate prototype of requested to map with base field offsets.
-        // which is handled as a special case below.
-        // We also don't try to prevent redundant copies if both leaf and compress bits are set.
-        for(size_t r=1, N=proto->getNextFieldOffset(); r<N; r++) {
-            PVField::const_shared_pointer fld_req(proto->getSubFieldT(r)),
-                    fld_base(base.getSubFieldT(fld_req->getFullName()));
-            const size_t b = fld_base->getFieldOffset();
-
-            if(!temp.requestedMask().get(b))
-                continue;
-
-            bool leaf = fld_base->getField()->getType()!=structure;
-
-            // initialize mapping when our bit is set
-            temp.base2req[b] = Mapping(r, leaf);
-            temp.req2base[r] = Mapping(b, leaf);
-
-            // add ourself to all "compress" bit mappings of enclosing structures
-            for(const PVStructure *parent = fld_req->getParent(); parent; parent = parent->getParent()) {
-                temp.req2base[parent->getFieldOffset()].tomask  .set(b);
-                temp.req2base[parent->getFieldOffset()].frommask.set(r);
-            }
-
-            for(const PVStructure *parent = fld_base->getParent(); parent; parent = parent->getParent()) {
-                temp.base2req[parent->getFieldOffset()].tomask  .set(r);
-                temp.base2req[parent->getFieldOffset()].frommask.set(b);
-            }
-        }
-    }
-
-    temp.maskRequested.set(0);
-
-    if(temp.maskRequested.nextSetBit(1)==-1) {
-        ok = false;
-        temp.messages+="Empty field selection";
-    }
-
-    if(!ok)
-        throw std::runtime_error(temp.messages);
-
-    swap(temp);
-}
-
-bool PVRequestMapper::_compute(const PVStructure& base, const PVStructure& pvReq,
-                               FieldBuilderPtr& builder, bool keepids, unsigned depth)
-{
-    bool ok = true;
-    const StringArray& reqNames = pvReq.getStructure()->getFieldNames();
-
-    for(size_t i=0, N=reqNames.size(); i<N; i++) {
-        // iterate through requested fields
-
-        PVField::const_shared_pointer subtype(base.getSubField(reqNames[i]));
-        const FieldConstPtr& subReq = pvReq.getStructure()->getFields()[i];
-
-        if(subReq->getType()!=structure) {
-            // pvRequest .field was not properly composed
-            std::ostringstream msg;
-            // not a great warning message as it doesn't distinguish 'a.value' from 'b.value',
-            // but getFullName() whould prefix with 'field.', which would probably cause
-            // more frequent confusion...
-            msg<<"request invalid '"<<pvReq.getStructure()->getFieldNames()[i]<<"' ";
-            messages+=msg.str();
-            ok = false;
-
-        } else if(!subtype) {
-            // requested field does not actually exist in base
-            std::ostringstream msg;
-            msg<<"No field '"<<pvReq.getStructure()->getFieldNames()[i]<<"' ";
-            messages+=msg.str();
-
-        } else if(depth>=maxDepth // exceeds max recursion depth
-                  || subtype->getField()->getType()!=structure // requested field is a leaf
-                  || static_cast<const Structure&>(*subReq).getFieldNames().empty() // requests all sub-fields
-                  )
-        {
-            // just add the whole thing
-            builder = builder->add(reqNames[i], subtype->getField());
-            for(size_t j=subtype->getFieldOffset(), N=subtype->getNextFieldOffset(); j<N; j++)
-                maskRequested.set(j);
-
-            if(subtype->getField()->getType()!=structure
-                    && !static_cast<const Structure&>(*subReq).getFieldNames().empty())
-            {
-                // attempt to select below a leaf field
-                std::ostringstream msg;
-                msg<<"Leaf field '"<<pvReq.getFullName()<<"' ";
-                messages+=msg.str();
-            } else if(depth>=maxDepth) {
-                std::ostringstream msg;
-                msg<<"selection truncated at '"<<pvReq.getFullName()<<"' ";
-                messages+=msg.str();
-            }
-
-        } else {
-            // recurse into sub-structure
-            const PVStructure& substruct = static_cast<const PVStructure&>(*subtype);
-
-            builder = builder->addNestedStructure(reqNames[i]);
-            maskRequested.set(substruct.getFieldOffset());
-
-            if(keepids)
-                builder = builder->setId(substruct.getStructure()->getID());
-
-            _compute(substruct,
-                     static_cast<const PVStructure&>(*pvReq.getPVFields()[i]),
-                     builder, keepids, depth+1u);
-
-            builder = builder->endNested();
-        }
-    }
-    return ok;
-}
-
-void PVRequestMapper::copyBaseToRequested(
-        const PVStructure& base,
-        const BitSet& baseMask,
-        PVStructure& request,
-        BitSet& requestMask
-) const {
-    assert(base.getStructure()==typeBase);
-    assert(request.getStructure()==typeRequested);
-    _map(base, baseMask, request, requestMask, false);
-}
-
-void PVRequestMapper::copyBaseFromRequested(
-        PVStructure& base,
-        BitSet& baseMask,
-        const PVStructure& request,
-        const BitSet& requestMask
-) const {
-    assert(base.getStructure()==typeBase);
-    assert(request.getStructure()==typeRequested);
-    _map(request, requestMask, base, baseMask, true);
-}
-
-void PVRequestMapper::_map(const PVStructure& src, const BitSet& maskSrc,
-                           PVStructure& dest, BitSet& maskDest,
-                           bool dir_r2b) const
-{
-    {
-        scratch = maskSrc;
-        const mapping_t& map = dir_r2b ? req2base : base2req;
-
-        assert(map.size()==src.getNumberFields());
-
-        for(int32 i=scratch.nextSetBit(0), N=map.size(); i>=0 && i<N; i=scratch.nextSetBit(i+1)) {
-            const Mapping& M = map[i];
-            if(!M.valid) {
-                assert(!dir_r2b); // only base -> requested mapping can have holes
-
-            } else if(M.leaf) {
-                // just copy
-                dest.getSubFieldT(M.to)->copy(*src.getSubFieldT(i));
-                maskDest.set(M.to);
-
-            } else {
-                // set bits of all sub-fields (in requested structure)
-                // these indicies are always >i
-                scratch |= M.frommask;
-
-                // we will also set the individual bits, but if a compress bit is set in the input,
-                // then set the corresponding bit in the output.
-                maskDest.set(M.to);
-            }
-        }
-    }
-}
-
-void PVRequestMapper::_mapMask(const BitSet& maskSrc,
-                               BitSet& maskDest,
-                               bool dir_r2b) const
-{
-    if(maskSrc.isEmpty()) {
-        // no-op
-
-    } else {
-        const mapping_t& map = dir_r2b ? req2base : base2req;
-
-        for(int32 i=maskSrc.nextSetBit(0), N=map.size(); i>=0 && i<N; i=maskSrc.nextSetBit(i+1)) {
-            const Mapping& M = map[i];
-            if(!M.valid) {
-                assert(!dir_r2b); // only base -> requested mapping can have holes
-
-            } else {
-                maskDest.set(M.to);
-
-                if(!M.leaf) {
-                    maskDest |= M.tomask;
-                }
-            }
-        }
-    }
-
-}
-
-void PVRequestMapper::swap(PVRequestMapper& other)
-{
-    typeBase.swap(other.typeBase);
-    typeRequested.swap(other.typeRequested);
-    maskRequested.swap(other.maskRequested);
-    base2req.swap(other.base2req);
-    req2base.swap(other.req2base);
-    messages.swap(other.messages);
-    scratch.swap(other.scratch); // paranoia
-}
-
-void PVRequestMapper::reset()
-{
-    typeBase.reset();
-    typeRequested.reset();
-    maskRequested.clear();
-    base2req.clear();
-    req2base.clear();
-    messages.clear();
-    scratch.clear(); // paranoia
-}
-
-}} //namespace epics::pvData

src/factory/Compare.cpp

@@ -23,7 +23,7 @@ namespace epics { namespace pvData {
  * 1) same instance
  * 2) same type (field and scalar/element), same name, same subfields (if any)
  */
-bool compare(const Field& a, const Field& b)
+bool operator==(const Field& a, const Field& b)
 {
     if(&a==&b)
         return true;
@@ -33,53 +33,53 @@ bool compare(const Field& a, const Field& b)
     case scalar: {
         const Scalar &A=static_cast<const Scalar&>(a);
         const Scalar &B=static_cast<const Scalar&>(b);
-        return compare(A, B);
+        return A==B;
     }
     case scalarArray: {
             const ScalarArray &A=static_cast<const ScalarArray&>(a);
             const ScalarArray &B=static_cast<const ScalarArray&>(b);
-            return compare(A, B);
+            return A==B;
         }
     case structure: {
             const Structure &A=static_cast<const Structure&>(a);
             const Structure &B=static_cast<const Structure&>(b);
-            return compare(A, B);
+            return A==B;
         }
     case structureArray: {
             const StructureArray &A=static_cast<const StructureArray&>(a);
             const StructureArray &B=static_cast<const StructureArray&>(b);
-            return compare(A, B);
+            return A==B;
         }
     case union_: {
             const Union &A=static_cast<const Union&>(a);
             const Union &B=static_cast<const Union&>(b);
-            return compare(A, B);
+            return A==B;
         }
     case unionArray: {
             const UnionArray &A=static_cast<const UnionArray&>(a);
             const UnionArray &B=static_cast<const UnionArray&>(b);
-            return compare(A, B);
+            return A==B;
         }
     default:
         throw std::logic_error("Invalid Field type in comparison");
     }
 }
 
-bool compare(const Scalar& a, const Scalar& b)
+bool operator==(const Scalar& a, const Scalar& b)
 {
     if(&a==&b)
         return true;
     return a.getScalarType()==b.getScalarType();
 }
 
-bool compare(const ScalarArray& a, const ScalarArray& b)
+bool operator==(const ScalarArray& a, const ScalarArray& b)
 {
     if(&a==&b)
         return true;
     return a.getElementType()==b.getElementType();
 }
 
-bool compare(const Structure& a, const Structure& b)
+bool operator==(const Structure& a, const Structure& b)
 {
     if(&a==&b)
         return true;
@@ -101,12 +101,12 @@ bool compare(const Structure& a, const Structure& b)
     return std::equal( an.begin(), an.end(), bn.begin() );
 }
 
-bool compare(const StructureArray& a, const StructureArray& b)
+bool operator==(const StructureArray& a, const StructureArray& b)
 {
     return *(a.getStructure().get())==*(b.getStructure().get());
 }
 
-bool compare(const Union& a, const Union& b)
+bool operator==(const Union& a, const Union& b)
 {
     if(&a==&b)
         return true;
@@ -128,12 +128,12 @@ bool compare(const Union& a, const Union& b)
     return std::equal( an.begin(), an.end(), bn.begin() );
 }
 
-bool compare(const UnionArray& a, const UnionArray& b)
+bool operator==(const UnionArray& a, const UnionArray& b)
 {
     return *(a.getUnion().get())==*(b.getUnion().get());
 }
 
-bool compare(const BoundedString& a, const BoundedString& b)
+bool operator==(const BoundedString& a, const BoundedString& b)
 {
     if(&a==&b)
         return true;
@@ -271,7 +271,7 @@ bool compareField(const PVUnion* left, const PVUnion* right)
         
     if (ls->isVariant())
     {
-        const PVField::const_shared_pointer& lval = left->get();
+        PVFieldPtr lval = left->get();
         if (lval.get() == 0)
             return right->get().get() == 0;
         else

src/factory/FieldCreateFactory.cpp

@@ -7,6 +7,10 @@
  *  @author mrk
  */
 
+#if defined(_WIN32) && !defined(NOMINMAX)
+#define NOMINMAX
+#endif
+
 #include <cstddef>
 #include <cstdlib>
 #include <string>
@@ -14,18 +18,13 @@
 #include <stdexcept>
 #include <sstream>
 
-#include <epicsString.h>
 #include <epicsMutex.h>
-#include <epicsThread.h>
 
 #define epicsExportSharedSymbols
-#include <pv/reftrack.h>
 #include <pv/lock.h>
 #include <pv/pvIntrospect.h>
 #include <pv/factory.h>
 #include <pv/serializeHelper.h>
-#include <pv/thread.h>
-#include <pv/pvData.h>
 
 using std::tr1::static_pointer_cast;
 using std::size_t;
@@ -33,79 +32,16 @@ using std::string;
 
 namespace epics { namespace pvData {
 
-size_t Field::num_instances;
-
-
-struct Field::Helper {
-    static unsigned hash(Field *fld) {
-        std::ostringstream key;
-        // hash the output of operator<<()
-        // not efficient, but stable within this process.
-        key<<(*fld);
-        unsigned H = epicsStrHash(key.str().c_str(), 0xbadc0de1);
-        fld->m_hash = H;
-        return H;
-    }
-};
-
-struct FieldCreate::Helper {
-    template<typename FLD>
-    static void cache(const FieldCreate *create, std::tr1::shared_ptr<FLD>& ent) {
-        unsigned hash = Field::Helper::hash(ent.get());
-
-        Lock G(create->mutex);
-        // we examine raw pointers stored in create->cache, which is safe under create->mutex
-
-        std::pair<cache_t::iterator, cache_t::iterator> itp(create->cache.equal_range(hash));
-        for(; itp.first!=itp.second; ++itp.first) {
-            Field* cent(itp.first->second);
-            FLD* centx(dynamic_cast<FLD*>(cent));
-            if(centx && compare(*centx, *ent)) {
-                try{
-                    ent = std::tr1::static_pointer_cast<FLD>(cent->shared_from_this());
-                    return;
-                }catch(std::tr1::bad_weak_ptr&){
-                    // we're racing destruction.
-                    // add a new entry.
-                    // Field::~Field is in the process of removing this old one.
-                    continue;
-                }
-            }
-        }
-
-        create->cache.insert(std::make_pair(hash, ent.get()));
-        // cache cleaned from Field::~Field
-    }
-};
+static DebugLevel debugLevel = lowDebug;
 
 Field::Field(Type type)
     : m_fieldType(type)
-    , m_hash(0)
 {
-    REFTRACE_INCREMENT(num_instances);
 }
 
 Field::~Field() {
-    REFTRACE_DECREMENT(num_instances);
-    FieldCreatePtr create(getFieldCreate());
-
-    Lock G(create->mutex);
-
-    std::pair<FieldCreate::cache_t::iterator, FieldCreate::cache_t::iterator> itp(create->cache.equal_range(m_hash));
-    for(; itp.first!=itp.second; ++itp.first) {
-        Field* cent(itp.first->second);
-        if(cent==this) {
-            create->cache.erase(itp.first);
-            return;
-        }
-    }
 }
 
-std::tr1::shared_ptr<PVField> Field::build() const
-{
-    FieldConstPtr self(shared_from_this());
-    return getPVDataCreate()->createPVField(self);
-}
 
 std::ostream& operator<<(std::ostream& o, const Field& f)
 {
@@ -176,11 +112,6 @@ void Scalar::deserialize(ByteBuffer* /*buffer*/, DeserializableControl* /*contro
 }
 
 
-std::tr1::shared_ptr<PVScalar> Scalar::build() const
-{
-    return getPVDataCreate()->createPVScalar(std::tr1::static_pointer_cast<const Scalar>(shared_from_this()));
-}
-
 
 
 std::string BoundedString::getID() const
@@ -347,11 +278,6 @@ void ScalarArray::deserialize(ByteBuffer* /*buffer*/, DeserializableControl* /*c
     throw std::runtime_error("not valid operation, use FieldCreate::deserialize instead");
 }
 
-std::tr1::shared_ptr<PVScalarArray> ScalarArray::build() const
-{
-    return getPVDataCreate()->createPVScalarArray(std::tr1::static_pointer_cast<const ScalarArray>(shared_from_this()));
-}
-
 
 BoundedScalarArray::~BoundedScalarArray() {}
 
@@ -403,7 +329,9 @@ StructureArray::StructureArray(StructureConstPtr const & structure)
 {
 }
 
-StructureArray::~StructureArray() {}
+StructureArray::~StructureArray() {
+    if(debugLevel==highDebug) printf("~StructureArray\n");
+}
 
 string StructureArray::getID() const
 {
@@ -430,17 +358,14 @@ void StructureArray::deserialize(ByteBuffer* /*buffer*/, DeserializableControl*
     throw std::runtime_error("not valid operation, use FieldCreate::deserialize instead");
 }
 
-std::tr1::shared_ptr<PVValueArray<std::tr1::shared_ptr<PVStructure> > > StructureArray::build() const
-{
-    return getPVDataCreate()->createPVStructureArray(std::tr1::static_pointer_cast<const StructureArray>(shared_from_this()));
-}
-
 UnionArray::UnionArray(UnionConstPtr const & _punion)
 : Array(unionArray),punion(_punion)
 {
 }
 
-UnionArray::~UnionArray() {}
+UnionArray::~UnionArray() {
+    if(debugLevel==highDebug) printf("~UnionArray\n");
+}
 
 string UnionArray::getID() const
 {
@@ -475,11 +400,6 @@ void UnionArray::deserialize(ByteBuffer* /*buffer*/, DeserializableControl* /*co
     throw std::runtime_error("not valid operation, use FieldCreate::deserialize instead");
 }
 
-std::tr1::shared_ptr<PVValueArray<std::tr1::shared_ptr<PVUnion> > > UnionArray::build() const
-{
-    return getPVDataCreate()->createPVUnionArray(std::tr1::static_pointer_cast<const UnionArray>(shared_from_this()));
-}
-
 const string Structure::DEFAULT_ID = Structure::defaultId();
 
 const string & Structure::defaultId()
@@ -533,10 +453,11 @@ string Structure::getID() const
 }
 
 FieldConstPtr  Structure::getField(string const & fieldName) const {
-    for(size_t i=0, N=fields.size(); i<N; i++) {
-        if(fieldName==fieldNames[i]) {
-            return fields[i];
-        }
+    size_t numberFields = fields.size();
+    for(size_t i=0; i<numberFields; i++) {
+        FieldConstPtr pfield = fields[i];
+        int result = fieldName.compare(fieldNames[i]);
+        if(result==0) return pfield;
     }
     return FieldConstPtr();
 }
@@ -617,11 +538,6 @@ void Structure::deserialize(ByteBuffer* /*buffer*/, DeserializableControl* /*con
     throw std::runtime_error("not valid operation, use FieldCreate::deserialize instead");
 }
 
-std::tr1::shared_ptr<PVStructure> Structure::build() const
-{
-    return getPVDataCreate()->createPVStructure(std::tr1::static_pointer_cast<const Structure>(shared_from_this()));
-}
-
 const string Union::DEFAULT_ID = Union::defaultId();
 
 const string & Union::defaultId()
@@ -689,41 +605,6 @@ Union::Union (
 
 Union::~Union() { }
 
-int32 Union::guess(Type t, ScalarType s) const
-{
-    if(t!=scalar && t!=scalarArray)
-        THROW_EXCEPTION2(std::logic_error, "PVUnion::guess() only support scalar and scalarArray");
-
-    int32 ret = -1;
-    for(size_t i=0, N=fields.size(); i<N; i++)
-    {
-        if(fields[i]->getType()!=t)
-            continue;
-
-        ScalarType type;
-        switch(fields[i]->getType()) {
-        case scalar:
-            type = static_cast<const Scalar*>(fields[i].get())->getScalarType();
-            break;
-        case scalarArray:
-            type = static_cast<const ScalarArray*>(fields[i].get())->getElementType();
-            break;
-        default:
-            continue;
-        }
-
-        if(type==s) {
-            // exact match
-            ret = i;
-            break; // we're done
-
-        } else if(ret==-1) {
-            // first partial match
-            ret = i;
-        }
-    }
-    return ret;
-}
 
 string Union::getID() const
 {
@@ -820,102 +701,18 @@ void Union::deserialize(ByteBuffer* /*buffer*/, DeserializableControl* /*control
     throw std::runtime_error("not valid operation, use FieldCreate::deserialize instead");
 }
 
-std::tr1::shared_ptr<PVUnion> Union::build() const
-{
-    return getPVDataCreate()->createPVUnion(std::tr1::static_pointer_cast<const Union>(shared_from_this()));
-}
 
-FieldBuilder::FieldBuilder()
-    :fieldCreate(getFieldCreate())
-    ,idSet(false)
-    ,nestedClassToBuild(structure)
-    ,nestedArray(false)
-    ,createNested(true)
-{}
-
-FieldBuilder::FieldBuilder(const Structure* S)
-    :fieldCreate(getFieldCreate())
-    ,id(S->getID())
-    ,idSet(!id.empty())
-    ,fieldNames(S->getFieldNames())
-    ,fields(S->getFields())
-    ,parentBuilder()
-    ,nestedClassToBuild(structure)
-    ,nestedName()
-    ,nestedArray(false)
-    ,createNested(false)
-{}
-
-FieldBuilder::FieldBuilder(const FieldBuilderPtr & _parentBuilder,
-                           const std::string& name,
-                           const Structure* S)
-    :fieldCreate(_parentBuilder->fieldCreate)
-    ,id(S->getID())
-    ,idSet(!id.empty())
-    ,fieldNames(S->getFieldNames())
-    ,fields(S->getFields())
-    ,parentBuilder(_parentBuilder)
-    ,nestedClassToBuild(structure)
-    ,nestedName(name)
-    ,nestedArray(false)
-    ,createNested(false)
-{}
-
-FieldBuilder::FieldBuilder(const FieldBuilderPtr & _parentBuilder,
-                           const std::string& name,
-                           const StructureArray* S)
-    :fieldCreate(getFieldCreate())
-    ,id(S->getStructure()->getID())
-    ,idSet(!id.empty())
-    ,fieldNames(S->getStructure()->getFieldNames())
-    ,fields(S->getStructure()->getFields())
-    ,parentBuilder(_parentBuilder)
-    ,nestedClassToBuild(structure)
-    ,nestedName(name)
-    ,nestedArray(true)
-    ,createNested(false)
-{}
-
-FieldBuilder::FieldBuilder(const FieldBuilderPtr & _parentBuilder,
-                           const std::string& name,
-                           const Union* S)
-    :fieldCreate(getFieldCreate())
-    ,id(S->getID())
-    ,idSet(!id.empty())
-    ,fieldNames(S->getFieldNames())
-    ,fields(S->getFields())
-    ,parentBuilder(_parentBuilder)
-    ,nestedClassToBuild(union_)
-    ,nestedName(name)
-    ,nestedArray(false)
-    ,createNested(false)
-{}
-
-FieldBuilder::FieldBuilder(const FieldBuilderPtr & _parentBuilder,
-                           const std::string& name,
-                           const UnionArray* S)
-    :fieldCreate(getFieldCreate())
-    ,id(S->getUnion()->getID())
-    ,idSet(!id.empty())
-    ,fieldNames(S->getUnion()->getFieldNames())
-    ,fields(S->getUnion()->getFields())
-    ,parentBuilder(_parentBuilder)
-    ,nestedClassToBuild(union_)
-    ,nestedName(name)
-    ,nestedArray(true)
-    ,createNested(false)
-{}
+FieldBuilder::FieldBuilder() : fieldCreate(getFieldCreate()), idSet(false) {}
 
 FieldBuilder::FieldBuilder(FieldBuilderPtr const & _parentBuilder,
 			string const & _nestedName,
-            Type _nestedClassToBuild, bool _nestedArray)
-    :fieldCreate(_parentBuilder->fieldCreate)
-    ,idSet(false)
-    ,parentBuilder(_parentBuilder)
-    ,nestedClassToBuild(_nestedClassToBuild)
-    ,nestedName(_nestedName)
-    ,nestedArray(_nestedArray)
-    ,createNested(true)
+			Type _nestedClassToBuild, bool _nestedArray) :
+		fieldCreate(getFieldCreate()),
+		idSet(false),
+		parentBuilder(_parentBuilder),
+		nestedClassToBuild(_nestedClassToBuild),
+		nestedName(_nestedName),
+		nestedArray(_nestedArray)
 {}
 
 void FieldBuilder::reset()
@@ -926,19 +723,6 @@ void FieldBuilder::reset()
 	fields.clear();
 }
 
-FieldBuilderPtr FieldBuilder::begin()
-{
-    FieldBuilderPtr ret(new FieldBuilder);
-    return ret;
-}
-
-FieldBuilderPtr FieldBuilder::begin(StructureConstPtr S)
-{
-    FieldBuilderPtr ret(new FieldBuilder(S.get()));
-    return ret;
-}
-
-
 FieldBuilderPtr FieldBuilder::setId(string const & id)
 {
     this->id = id;
@@ -948,57 +732,56 @@ FieldBuilderPtr FieldBuilder::setId(string const & id)
 
 FieldBuilderPtr FieldBuilder::add(string const & name, ScalarType scalarType)
 {
-    return add(name, fieldCreate->createScalar(scalarType));
+    fields.push_back(fieldCreate->createScalar(scalarType)); fieldNames.push_back(name); 
+	return shared_from_this();
 }
 
 FieldBuilderPtr FieldBuilder::addBoundedString(std::string const & name, std::size_t maxLength)
 {
-    return add(name, fieldCreate->createBoundedString(maxLength));
+    fields.push_back(fieldCreate->createBoundedString(maxLength)); fieldNames.push_back(name);
+    return shared_from_this();
 }
 
 FieldBuilderPtr FieldBuilder::add(string const & name, FieldConstPtr const & field)
 {
-    const Field* cur = findField(name, field->getType());
-    if(!cur) {
-        fields.push_back(field); fieldNames.push_back(name);
-    } else if(*cur!=*field) {
-        THROW_EXCEPTION2(std::runtime_error, "duplicate field name w/ different type : "+name);
-    } // else exact duplicate is silently ignored
+    fields.push_back(field); fieldNames.push_back(name);
 	return shared_from_this();
 }
 
 FieldBuilderPtr FieldBuilder::addArray(string const & name, ScalarType scalarType)
 {
-    return add(name, fieldCreate->createScalarArray(scalarType));
+    fields.push_back(fieldCreate->createScalarArray(scalarType)); fieldNames.push_back(name);
+	return shared_from_this();
 }
 
 FieldBuilderPtr FieldBuilder::addFixedArray(string const & name, ScalarType scalarType, size_t size)
 {
-    return add(name, fieldCreate->createFixedScalarArray(scalarType, size));
+    fields.push_back(fieldCreate->createFixedScalarArray(scalarType, size)); fieldNames.push_back(name);
+    return shared_from_this();
 }
 
 FieldBuilderPtr FieldBuilder::addBoundedArray(string const & name, ScalarType scalarType, size_t size)
 {
-    return add(name, fieldCreate->createBoundedScalarArray(scalarType, size));
+    fields.push_back(fieldCreate->createBoundedScalarArray(scalarType, size)); fieldNames.push_back(name);
+    return shared_from_this();
 }
 
 FieldBuilderPtr FieldBuilder::addArray(string const & name, FieldConstPtr const & element)
 {
-    FieldConstPtr fld;
     switch (element->getType())
     {
         case structure:
-            fld = fieldCreate->createStructureArray(static_pointer_cast<const Structure>(element));
+            fields.push_back(fieldCreate->createStructureArray(static_pointer_cast<const Structure>(element)));
             break;
         case union_:
-            fld = fieldCreate->createUnionArray(static_pointer_cast<const Union>(element));
+            fields.push_back(fieldCreate->createUnionArray(static_pointer_cast<const Union>(element)));
             break;
         case scalar:
 
             if (std::tr1::dynamic_pointer_cast<const BoundedString>(element).get())
                 THROW_EXCEPTION2(std::invalid_argument, "bounded string arrays are not supported");
 
-            fld = fieldCreate->createScalarArray(static_pointer_cast<const Scalar>(element)->getScalarType());
+            fields.push_back(fieldCreate->createScalarArray(static_pointer_cast<const Scalar>(element)->getScalarType()));
             break;
         // scalarArray?
         default:
@@ -1007,7 +790,8 @@ FieldBuilderPtr FieldBuilder::addArray(string const & name, FieldConstPtr const
             THROW_EXCEPTION2(std::invalid_argument, msg.str());
     }
     
-    return add(name, fld);
+    fieldNames.push_back(name);
+	return shared_from_this();
 }
 
 FieldConstPtr FieldBuilder::createFieldInternal(Type type)
@@ -1057,111 +841,48 @@ UnionConstPtr FieldBuilder::createUnion()
     return field;
 }
 
-const Field* FieldBuilder::findField(const std::string& name, Type ftype)
-{
-    // linear search on the theory that the number of fields is small
-    for(size_t i=0; i<fieldNames.size(); i++)
-    {
-        if(name!=fieldNames[i])
-            continue;
-
-        if(fields[i]->getType()!=ftype)
-            THROW_EXCEPTION2(std::invalid_argument, "nested field not required type: "+name);
-
-        return fields[i].get();
-    }
-    return 0;
-}
-
 FieldBuilderPtr FieldBuilder::addNestedStructure(string const & name)
 {
-    const Field *cur = findField(name, structure);
-    if(cur) {
-        return FieldBuilderPtr(new FieldBuilder(shared_from_this(), name,
-                                                static_cast<const Structure*>(cur)));
-    }
     return FieldBuilderPtr(new FieldBuilder(shared_from_this(), name, structure, false));
 }
 
 
 FieldBuilderPtr FieldBuilder::addNestedUnion(string const & name)
 {
-    const Field *cur = findField(name, union_);
-    if(cur) {
-        return FieldBuilderPtr(new FieldBuilder(shared_from_this(), name,
-                                                static_cast<const Union*>(cur)));
-    }
     return FieldBuilderPtr(new FieldBuilder(shared_from_this(), name, union_, false));
 }
 
 
 FieldBuilderPtr FieldBuilder::addNestedStructureArray(string const & name)
 {
-    const Field *cur = findField(name, structureArray);
-    if(cur) {
-        return FieldBuilderPtr(new FieldBuilder(shared_from_this(), name,
-                                                static_cast<const StructureArray*>(cur)));
-    }
     return FieldBuilderPtr(new FieldBuilder(shared_from_this(), name, structure, true));
 }
 
 FieldBuilderPtr FieldBuilder::addNestedUnionArray(string const & name)
 {
-    const Field *cur = findField(name, unionArray);
-    if(cur) {
-        return FieldBuilderPtr(new FieldBuilder(shared_from_this(), name,
-                                                static_cast<const UnionArray*>(cur)));
-    }
     return FieldBuilderPtr(new FieldBuilder(shared_from_this(), name, union_, true));
 }
 
 FieldBuilderPtr FieldBuilder::endNested()
 {
-    if (!parentBuilder)
-        THROW_EXCEPTION2(std::runtime_error, "FieldBuilder::endNested() can only be called to create nested fields");
+    if (!parentBuilder.get())
+        THROW_EXCEPTION2(std::runtime_error, "this method can only be called to create nested fields");
         
     FieldConstPtr nestedField = createFieldInternal(nestedClassToBuild);
-
-    if(createNested) {
-        if (nestedArray)
-            parentBuilder->addArray(nestedName, nestedField);
-        else
-            parentBuilder->add(nestedName, nestedField);
-        return parentBuilder;
-    } else {
-        for(size_t i=0, N = parentBuilder->fieldNames.size(); i<N; i++)
-        {
-            if(nestedName!=parentBuilder->fieldNames[i])
-                continue;
-
-            if(nestedArray) {
-                if(nestedClassToBuild==structure)
-                    parentBuilder->fields[i] = fieldCreate->createStructureArray(std::tr1::static_pointer_cast<const Structure>(nestedField));
-                else if(nestedClassToBuild==union_)
-                    parentBuilder->fields[i] = fieldCreate->createUnionArray(std::tr1::static_pointer_cast<const Union>(nestedField));
-                else
-                    throw std::logic_error("bad nested class");
-            } else {
-                parentBuilder->fields[i] = nestedField;
-            }
-            return parentBuilder;
-        }
-        // this only reached if bug in ctor
-        THROW_EXCEPTION2(std::logic_error, "no nested field field?");
-    }
+    if (nestedArray)
+        parentBuilder->addArray(nestedName, nestedField);
+    else
+        parentBuilder->add(nestedName, nestedField);
+        
+    return parentBuilder;
 }
 
+
 FieldBuilderPtr FieldCreate::createFieldBuilder() const
 {
     return FieldBuilderPtr(new FieldBuilder());
 }
 
-FieldBuilderPtr FieldCreate::createFieldBuilder(StructureConstPtr S) const
-{
-    FieldBuilderPtr ret(new FieldBuilder(S.get()));
-    return ret;
-}
-
 ScalarConstPtr FieldCreate::createScalar(ScalarType scalarType) const
 {
     if(scalarType<0 || scalarType>MAX_SCALAR_TYPE) {
@@ -1175,9 +896,10 @@ ScalarConstPtr FieldCreate::createScalar(ScalarType scalarType) const
 
 BoundedStringConstPtr FieldCreate::createBoundedString(std::size_t maxLength) const
 {
-    std::tr1::shared_ptr<BoundedString> s(new BoundedString(maxLength));
-    Helper::cache(this, s);
-    return s;
+    // TODO use std::make_shared
+    std::tr1::shared_ptr<BoundedString> s(new BoundedString(maxLength), Field::Deleter());
+    BoundedStringConstPtr sa = s;
+    return sa;
 }
 
 ScalarArrayConstPtr FieldCreate::createScalarArray(ScalarType elementType) const
@@ -1199,9 +921,10 @@ ScalarArrayConstPtr FieldCreate::createFixedScalarArray(ScalarType elementType,
         THROW_EXCEPTION2(std::invalid_argument, strm.str());
     }
 
-    std::tr1::shared_ptr<ScalarArray> s(new FixedScalarArray(elementType, size));
-    Helper::cache(this, s);
-    return s;
+    // TODO use std::make_shared
+    std::tr1::shared_ptr<ScalarArray> s(new FixedScalarArray(elementType, size), Field::Deleter());
+    ScalarArrayConstPtr sa = s;
+    return sa;
 }
 
 ScalarArrayConstPtr FieldCreate::createBoundedScalarArray(ScalarType elementType, size_t size) const
@@ -1212,9 +935,10 @@ ScalarArrayConstPtr FieldCreate::createBoundedScalarArray(ScalarType elementType
         THROW_EXCEPTION2(std::invalid_argument, strm.str());
     }
 
-    std::tr1::shared_ptr<ScalarArray> s(new BoundedScalarArray(elementType, size));
-    Helper::cache(this, s);
-    return s;
+    // TODO use std::make_shared
+    std::tr1::shared_ptr<ScalarArray> s(new BoundedScalarArray(elementType, size), Field::Deleter());
+    ScalarArrayConstPtr sa = s;
+    return sa;
 }
 
 StructureConstPtr FieldCreate::createStructure () const
@@ -1271,9 +995,10 @@ StructureConstPtr FieldCreate::createStructure (
     StringArray const & fieldNames,FieldConstPtrArray const & fields) const
 {
       validateFieldNames(fieldNames);
-      std::tr1::shared_ptr<Structure> sp(new Structure(fieldNames,fields));
-      Helper::cache(this, sp);
-      return sp;
+      // TODO use std::make_shared
+      std::tr1::shared_ptr<Structure> sp(new Structure(fieldNames,fields), Field::Deleter());
+      StructureConstPtr structure = sp;
+      return structure;
 }
 
 StructureConstPtr FieldCreate::createStructure (
@@ -1282,26 +1007,29 @@ StructureConstPtr FieldCreate::createStructure (
     FieldConstPtrArray const & fields) const
 {
       validateFieldNames(fieldNames);
-      std::tr1::shared_ptr<Structure> sp(new Structure(fieldNames,fields,id));
-      Helper::cache(this, sp);
-      return sp;
+      // TODO use std::make_shared
+      std::tr1::shared_ptr<Structure> sp(new Structure(fieldNames,fields,id), Field::Deleter());
+      StructureConstPtr structure = sp;
+      return structure;
 }
 
 StructureArrayConstPtr FieldCreate::createStructureArray(
     StructureConstPtr const & structure) const
 {
-     std::tr1::shared_ptr<StructureArray> sp(new StructureArray(structure));
-     Helper::cache(this, sp);
-     return sp;
+     // TODO use std::make_shared
+     std::tr1::shared_ptr<StructureArray> sp(new StructureArray(structure), Field::Deleter());
+     StructureArrayConstPtr structureArray = sp;
+     return structureArray;
 }
 
 UnionConstPtr FieldCreate::createUnion (
     StringArray const & fieldNames,FieldConstPtrArray const & fields) const
 {
       validateFieldNames(fieldNames);
-      std::tr1::shared_ptr<Union> sp(new Union(fieldNames,fields));
-      Helper::cache(this, sp);
-      return sp;
+      // TODO use std::make_shared
+      std::tr1::shared_ptr<Union> sp(new Union(fieldNames,fields), Field::Deleter());
+      UnionConstPtr punion = sp;
+      return punion;
 }
 
 UnionConstPtr FieldCreate::createUnion (
@@ -1310,9 +1038,10 @@ UnionConstPtr FieldCreate::createUnion (
     FieldConstPtrArray const & fields) const
 {
       validateFieldNames(fieldNames);
-      std::tr1::shared_ptr<Union> sp(new Union(fieldNames,fields,id));
-      Helper::cache(this, sp);
-      return sp;
+      // TODO use std::make_shared
+      std::tr1::shared_ptr<Union> sp(new Union(fieldNames,fields,id), Field::Deleter());
+      UnionConstPtr punion = sp;
+      return punion;
 }
 
 UnionConstPtr FieldCreate::createVariantUnion () const
@@ -1323,9 +1052,10 @@ UnionConstPtr FieldCreate::createVariantUnion () const
 UnionArrayConstPtr FieldCreate::createUnionArray(
     UnionConstPtr const & punion) const
 {
-     std::tr1::shared_ptr<UnionArray> sp(new UnionArray(punion));
-     Helper::cache(this, sp);
-     return sp;
+     // TODO use std::make_shared 
+     std::tr1::shared_ptr<UnionArray> sp(new UnionArray(punion), Field::Deleter());
+     UnionArrayConstPtr unionArray = sp;
+     return unionArray;
 }
 
 UnionArrayConstPtr FieldCreate::createVariantUnionArray () const
@@ -1454,10 +1184,12 @@ FieldConstPtr FieldCreate::deserialize(ByteBuffer* buffer, DeserializableControl
 
             size_t size = SerializeHelper::readSize(buffer, control);
 
+            // TODO use std::make_shared
             std::tr1::shared_ptr<Field> sp(
-                        new BoundedString(size));
-            Helper::cache(this, sp);
-            return sp;
+                        new BoundedString(size),
+                        Field::Deleter());
+            FieldConstPtr p = sp;
+            return p;
         }
         else
             throw std::invalid_argument("invalid type encoding");
@@ -1482,17 +1214,19 @@ FieldConstPtr FieldCreate::deserialize(ByteBuffer* buffer, DeserializableControl
             {
                 // TODO use std::make_shared
                 std::tr1::shared_ptr<Field> sp(
-                            new FixedScalarArray(static_cast<epics::pvData::ScalarType>(scalarType), size));
-                Helper::cache(this, sp);
-                return sp;
+                            new FixedScalarArray(static_cast<epics::pvData::ScalarType>(scalarType), size),
+                            Field::Deleter());
+                FieldConstPtr p = sp;
+                return p;
             }
             else
             {
                 // TODO use std::make_shared
                 std::tr1::shared_ptr<Field> sp(
-                            new BoundedScalarArray(static_cast<epics::pvData::ScalarType>(scalarType), size));
-                Helper::cache(this, sp);
-                return sp;
+                            new BoundedScalarArray(static_cast<epics::pvData::ScalarType>(scalarType), size),
+                            Field::Deleter());
+                FieldConstPtr p = sp;
+                return p;
             }
         }
         else if (typeCode == 0x80)
@@ -1504,9 +1238,9 @@ FieldConstPtr FieldCreate::deserialize(ByteBuffer* buffer, DeserializableControl
             // Type type = Type.structureArray;
             StructureConstPtr elementStructure = std::tr1::static_pointer_cast<const Structure>(control->cachedDeserialize(buffer));
             // TODO use std::make_shared
-            std::tr1::shared_ptr<Field> sp(new StructureArray(elementStructure));
-            Helper::cache(this, sp);
-            return sp;
+            std::tr1::shared_ptr<Field> sp(new StructureArray(elementStructure), Field::Deleter());
+            FieldConstPtr p = sp;
+            return p;
         }
         else if (typeCode == 0x81)
         {
@@ -1517,9 +1251,9 @@ FieldConstPtr FieldCreate::deserialize(ByteBuffer* buffer, DeserializableControl
             // Type type = Type.unionArray;
             UnionConstPtr elementUnion = std::tr1::static_pointer_cast<const Union>(control->cachedDeserialize(buffer));
             // TODO use std::make_shared
-            std::tr1::shared_ptr<Field> sp(new UnionArray(elementUnion));
-            Helper::cache(this, sp);
-            return sp;
+            std::tr1::shared_ptr<Field> sp(new UnionArray(elementUnion), Field::Deleter());
+            FieldConstPtr p = sp;
+            return p;
         }
         else if (typeCode == 0x82)
         {
@@ -1535,58 +1269,46 @@ FieldConstPtr FieldCreate::deserialize(ByteBuffer* buffer, DeserializableControl
     }
 }
 
-namespace detail {
-struct field_factory {
-    FieldCreatePtr fieldCreate;
-    field_factory() :fieldCreate(new FieldCreate()) {
-        registerRefCounter("Field", &Field::num_instances);
-        registerRefCounter("Thread", &Thread::num_instances);
-    }
-};
-}
-
-static detail::field_factory* field_factory_s;
-static epicsThreadOnceId field_factory_once = EPICS_THREAD_ONCE_INIT;
-
-static void field_factory_init(void*)
+// TODO replace with non-locking singleton pattern
+FieldCreatePtr FieldCreate::getFieldCreate()
 {
-    try {
-        field_factory_s = new detail::field_factory;
-    }catch(std::exception& e){
-        std::cerr<<"Error initializing getFieldCreate() : "<<e.what()<<"\n";
-    }
-}
+	LOCAL_STATIC_LOCK;
+	static FieldCreatePtr fieldCreate;
+	static Mutex mutex;
 
-const FieldCreatePtr& FieldCreate::getFieldCreate()
-{
-    epicsThreadOnce(&field_factory_once, &field_factory_init, 0);
-    if(!field_factory_s->fieldCreate)
-        throw std::logic_error("getFieldCreate() not initialized");
-    return field_factory_s->fieldCreate;
+	Lock xx(mutex);
+    if(fieldCreate.get()==0) fieldCreate = FieldCreatePtr(new FieldCreate());
+    return fieldCreate;
 }
 
 FieldCreate::FieldCreate()
 {
     for (int i = 0; i <= MAX_SCALAR_TYPE; i++)
     {
-        std::tr1::shared_ptr<Scalar> sp(new Scalar(static_cast<ScalarType>(i)));
-        Helper::cache(this, sp);
-        scalars.push_back(sp);
+        // TODO use std::make_shared
+        std::tr1::shared_ptr<Scalar> sp(new Scalar(static_cast<ScalarType>(i)), Field::Deleter());
+        ScalarConstPtr p = sp;
+        scalars.push_back(p);
 
-        std::tr1::shared_ptr<ScalarArray> spa(new ScalarArray(static_cast<ScalarType>(i)));
-        Helper::cache(this, spa);
+        // TODO use std::make_shared
+        std::tr1::shared_ptr<ScalarArray> spa(new ScalarArray(static_cast<ScalarType>(i)), Field::Deleter());
+        ScalarArrayConstPtr pa = spa;
         scalarArrays.push_back(spa);
     }
 
-    std::tr1::shared_ptr<Union> su(new Union());
-    Helper::cache(this, su);
+    // TODO use std::make_shared
+    std::tr1::shared_ptr<Union> su(new Union(), Field::Deleter());
     variantUnion = su;
 
-    std::tr1::shared_ptr<UnionArray> sua(new UnionArray(variantUnion));
-    Helper::cache(this, sua);
+    // TODO use std::make_shared
+    std::tr1::shared_ptr<UnionArray> sua(new UnionArray(variantUnion), Field::Deleter());
     variantUnionArray = sua;
 }
 
+FieldCreatePtr getFieldCreate() {
+    return FieldCreate::getFieldCreate();
+}
+
 }}
 
 namespace std{

src/factory/PVDataCreateFactory.cpp

@@ -7,13 +7,16 @@
  *  @author mrk
  */
 
+#if defined(_WIN32) && !defined(NOMINMAX)
+#define NOMINMAX
+#endif
+
 #include <cstddef>
 #include <cstdlib>
 #include <string>
 #include <cstdio>
 
 #include <epicsMutex.h>
-#include <epicsThread.h>
 
 #define epicsExportSharedSymbols
 #include <pv/lock.h>
@@ -21,7 +24,6 @@
 #include <pv/pvData.h>
 #include <pv/factory.h>
 #include <pv/serializeHelper.h>
-#include <pv/reftrack.h>
 
 using std::tr1::static_pointer_cast;
 using std::size_t;
@@ -57,111 +59,135 @@ template<> const ScalarType PVFloatArray::typeCode = pvFloat;
 template<> const ScalarType PVDoubleArray::typeCode = pvDouble;
 template<> const ScalarType PVStringArray::typeCode = pvString;
 
+/** Default storage for scalar values
+ */
+template<typename T>
+class BasePVScalar : public PVScalarValue<T> {
+public:
+    typedef T  value_type;
+    typedef T* pointer;
+    typedef const T* const_pointer;
+
+    BasePVScalar(ScalarConstPtr const & scalar);
+    virtual ~BasePVScalar();
+    virtual T get() const ;
+    virtual void put(T val);
+    virtual void serialize(ByteBuffer *pbuffer,
+        SerializableControl *pflusher) const;
+    virtual void deserialize(ByteBuffer *pbuffer,
+        DeserializableControl *pflusher);
+private:
+    T value;
+};
 
 template<typename T>
-PVScalarValue<T>::~PVScalarValue() {}
+BasePVScalar<T>::BasePVScalar(ScalarConstPtr const & scalar)
+    : PVScalarValue<T>(scalar),value(0)
+{}
+//Note: '0' is a suitable default for all POD types (not string)
 
 template<typename T>
-std::ostream& PVScalarValue<T>::dumpValue(std::ostream& o) const
+BasePVScalar<T>::~BasePVScalar() {}
+
+template<typename T>
+T BasePVScalar<T>::get() const  { return value;}
+
+template<typename T>
+void BasePVScalar<T>::put(T val)
 {
-    return o << get();
+    value = val;
+    PVField::postPut();
 }
 
 template<typename T>
-void PVScalarValue<T>::operator>>=(T& value) const
-{
-    value = get();
-}
-
-template<typename T>
-void PVScalarValue<T>::operator<<=(typename storage_t::arg_type value)
-{
-    put(value);
-}
-
-template<typename T>
-void PVScalarValue<T>::assign(const PVScalar& scalar)
-{
-    if(isImmutable())
-        throw std::invalid_argument("destination is immutable");
-    copyUnchecked(scalar);
-}
-
-template<typename T>
-void PVScalarValue<T>::copy(const PVScalar& from)
-{
-    assign(from);
-}
-
-template<typename T>
-void PVScalarValue<T>::copyUnchecked(const PVScalar& from)
-{
-    if(this==&from)
-        return;
-    T result;
-    from.getAs((void*)&result, typeCode);
-    put(result);
-}
-
-template<typename T>
-void PVScalarValue<T>::serialize(ByteBuffer *pbuffer,
+void BasePVScalar<T>::serialize(ByteBuffer *pbuffer,
     SerializableControl *pflusher) const {
     pflusher->ensureBuffer(sizeof(T));
-    pbuffer->put(storage.value);
-}
-
-template<>
-void PVScalarValue<std::string>::serialize(ByteBuffer *pbuffer,
-    SerializableControl *pflusher) const {
-    SerializeHelper::serializeString(storage.value, pbuffer, pflusher);
+    pbuffer->put(value);
 }
 
 template<typename T>
-void PVScalarValue<T>::deserialize(ByteBuffer *pbuffer,
+void BasePVScalar<T>::deserialize(ByteBuffer *pbuffer,
     DeserializableControl *pflusher)
 {
     pflusher->ensureData(sizeof(T));
-    storage.value = pbuffer->GET(T);
+    value = pbuffer->GET(T);
 }
 
-template<>
-void PVScalarValue<std::string>::deserialize(ByteBuffer *pbuffer,
-    DeserializableControl *pflusher)
-{
-    storage.value = SerializeHelper::deserializeString(pbuffer, pflusher);
-    // TODO: check for violations of maxLength?
-}
+typedef BasePVScalar<boolean> BasePVBoolean;
+typedef BasePVScalar<int8> BasePVByte;
+typedef BasePVScalar<int16> BasePVShort;
+typedef BasePVScalar<int32> BasePVInt;
+typedef BasePVScalar<int64> BasePVLong;
+typedef BasePVScalar<uint8> BasePVUByte;
+typedef BasePVScalar<uint16> BasePVUShort;
+typedef BasePVScalar<uint32> BasePVUInt;
+typedef BasePVScalar<uint64> BasePVULong;
+typedef BasePVScalar<float> BasePVFloat;
+typedef BasePVScalar<double> BasePVDouble;
 
-PVString::PVString(ScalarConstPtr const & scalar)
-    : PVScalarValue<std::string>(scalar)
+// BasePVString is special case, since it implements SerializableArray
+class BasePVString : public PVString {
+public:
+    typedef string value_type;
+    typedef string* pointer;
+    typedef const string* const_pointer;
+
+    BasePVString(ScalarConstPtr const & scalar);
+    virtual ~BasePVString();
+    virtual string get() const ;
+    virtual void put(string val);
+    virtual void serialize(ByteBuffer *pbuffer,
+        SerializableControl *pflusher) const;
+    virtual void deserialize(ByteBuffer *pbuffer,
+        DeserializableControl *pflusher);
+    virtual void serialize(ByteBuffer *pbuffer,
+        SerializableControl *pflusher, size_t offset, size_t count) const;
+private:
+    string value;
+    std::size_t maxLength;
+};
+
+BasePVString::BasePVString(ScalarConstPtr const & scalar)
+    : PVString(scalar),value()
 {
     BoundedStringConstPtr boundedString = std::tr1::dynamic_pointer_cast<const BoundedString>(scalar);
     if (boundedString.get())
-        storage.maxLength = boundedString->getMaximumLength();
+        maxLength = boundedString->getMaximumLength();
     else
-        storage.maxLength = 0;
+        maxLength = 0;
 }
 
-std::ostream& PVString::dumpValue(std::ostream& o) const
+BasePVString::~BasePVString() {}
+
+string BasePVString::get() const  { return value;}
+
+void BasePVString::put(string val)
 {
-    // we escape, but do not quote, for scalar string
-    o<<escape(get());
-    return o;
+    if (maxLength > 0 && val.length() > maxLength)
+        throw std::overflow_error("string too long");
+
+    value = val;
+    postPut();
 }
 
-/* mixing overrides (virtual functions) and overloads (different argument lists) is fun...
- * we override all overloads to avoid the "hides overloaded virtual function" warning from clang.
- * In this case we don't need/want to, so just delegate to the base class.
- */
-void PVString::serialize(ByteBuffer *pbuffer,
+void BasePVString::serialize(ByteBuffer *pbuffer,
     SerializableControl *pflusher) const
-{PVScalarValue<std::string>::serialize(pbuffer, pflusher);}
+{
+    SerializeHelper::serializeString(value, pbuffer, pflusher);
+}
 
-void PVString::serialize(ByteBuffer *pbuffer,
+void BasePVString::deserialize(ByteBuffer *pbuffer,
+    DeserializableControl *pflusher)
+{
+    value = SerializeHelper::deserializeString(pbuffer, pflusher);
+}
+
+void BasePVString::serialize(ByteBuffer *pbuffer,
     SerializableControl *pflusher, size_t offset, size_t count) const
 {
 	// check bounds
-    const size_t length = storage.value.length();
+	const size_t length = /*(value == null) ? 0 :*/ value.length();
 	/*if (offset < 0) offset = 0;
 	else*/ if (offset > length) offset = length;
 	//if (count < 0) count = length;
@@ -171,10 +197,10 @@ void PVString::serialize(ByteBuffer *pbuffer,
 		count = maxCount;
 	
 	// write
-    SerializeHelper::serializeSubstring(storage.value, offset, count, pbuffer, pflusher);
+	SerializeHelper::serializeSubstring(value, offset, count, pbuffer, pflusher);
 }
 
-void PVArray::checkLength(size_t len) const
+void PVArray::checkLength(size_t len)
 {
     Array::ArraySizeType type = getArray()->getArraySizeType();
     if (type != Array::variable)
@@ -187,79 +213,61 @@ void PVArray::checkLength(size_t len) const
     }
 }
 
+/** Default storage for arrays
+ */
 template<typename T>
-PVValueArray<T>::PVValueArray(ScalarArrayConstPtr const & scalarArray)
-    :base_t(scalarArray)
-    ,value()
+class DefaultPVArray : public PVValueArray<T> {
+public:
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    typedef std::vector<T> vector;
+    typedef const std::vector<T> const_vector;
+    typedef std::tr1::shared_ptr<vector> shared_vector;
+
+    typedef ::epics::pvData::shared_vector<T> svector;
+    typedef ::epics::pvData::shared_vector<const T> const_svector;
+
+    DefaultPVArray(ScalarArrayConstPtr const & scalarArray);
+    virtual ~DefaultPVArray();
+
+    virtual size_t getLength() const {return value.size();}
+    virtual size_t getCapacity() const {return value.capacity();}
+
+    virtual void setCapacity(size_t capacity);
+    virtual void setLength(size_t length);
+
+    virtual const_svector view() const {return value;}
+    virtual void swap(const_svector &other);
+    virtual void replace(const const_svector& next);
+
+    // from Serializable
+    virtual void serialize(ByteBuffer *pbuffer,SerializableControl *pflusher) const;
+    virtual void deserialize(ByteBuffer *pbuffer,DeserializableControl *pflusher);
+    virtual void serialize(ByteBuffer *pbuffer,
+         SerializableControl *pflusher, size_t offset, size_t count) const;
+private:
+    const_svector value;
+};
+
+template<typename T>
+DefaultPVArray<T>::DefaultPVArray(ScalarArrayConstPtr const & scalarArray)
+: PVValueArray<T>(scalarArray),
+    value()
   
-{}
-
-PVValueArray<PVStructurePtr>::PVValueArray(StructureArrayConstPtr const & structureArray)
-    :base_t(structureArray)
-    ,structureArray(structureArray)
-
-{}
-
-PVValueArray<PVUnionPtr>::PVValueArray(UnionArrayConstPtr const & unionArray)
-    :base_t(unionArray)
-    ,unionArray(unionArray)
-{}
-
-template<typename T>
-PVValueArray<T>::~PVValueArray() {}
-
-template<typename T>
-ArrayConstPtr PVValueArray<T>::getArray() const
 {
-    return std::tr1::static_pointer_cast<const Array>(this->getField());
-}
-
-template<typename T>
-std::ostream& PVValueArray<T>::dumpValue(std::ostream& o) const
-{
-    const_svector v(this->view());
-    typename const_svector::const_iterator it(v.begin()),
-                                  end(v.end());
-    o << '[';
-    if(it!=end) {
-        o << print_cast(*it++);
-        for(; it!=end; ++it)
-            o << ',' << print_cast(*it);
-
+    ArrayConstPtr array = this->getArray();
+    if (array->getArraySizeType() == Array::fixed)
+    {
+        // this->setLength(array->getMaximumCapacity());
+        this->setCapacityMutable(false);
     }
-    return o << ']';
-}
-
-template<>
-std::ostream& PVValueArray<std::string>::dumpValue(std::ostream& o, size_t index) const
-{
-    return o << '"' << escape(this->view().at(index)) << '"';
-}
-
-template<>
-std::ostream& PVValueArray<std::string>::dumpValue(std::ostream& o) const
-{
-    const_svector v(this->view());
-    const_svector::const_iterator it(v.begin()),
-                                  end(v.end());
-    o << '[';
-    if(it!=end) {
-        o << '"' << escape(*it++) << '"';
-        for(; it!=end; ++it)
-            o << ", \"" << escape(*it) << '"';
-
-    }
-    return o << ']';
 }
 
 template<typename T>
-std::ostream& PVValueArray<T>::dumpValue(std::ostream& o, size_t index) const
-{
-    return o << print_cast(this->view().at(index));
-}
-
+DefaultPVArray<T>::~DefaultPVArray()
+{ }
 template<typename T>
-void PVValueArray<T>::setCapacity(size_t capacity)
+void DefaultPVArray<T>::setCapacity(size_t capacity)
 {
     if(this->isCapacityMutable()) {
         this->checkLength(capacity);
@@ -270,7 +278,7 @@ void PVValueArray<T>::setCapacity(size_t capacity)
 }
 
 template<typename T>
-void PVValueArray<T>::setLength(size_t length)
+void DefaultPVArray<T>::setLength(size_t length)
 {
     if(this->isImmutable())
         THROW_EXCEPTION2(std::logic_error, "immutable");
@@ -287,7 +295,7 @@ void PVValueArray<T>::setLength(size_t length)
 }
 
 template<typename T>
-void PVValueArray<T>::replace(const const_svector& next)
+void DefaultPVArray<T>::replace(const const_svector& next)
 {
     this->checkLength(next.size());
 
@@ -296,7 +304,7 @@ void PVValueArray<T>::replace(const const_svector& next)
 }
 
 template<typename T>
-void PVValueArray<T>::swap(const_svector &other)
+void DefaultPVArray<T>::swap(const_svector &other)
 {
     if (this->isImmutable())
         THROW_EXCEPTION2(std::logic_error, "immutable");
@@ -308,13 +316,13 @@ void PVValueArray<T>::swap(const_svector &other)
 
 
 template<typename T>
-void PVValueArray<T>::serialize(ByteBuffer *pbuffer,
+void DefaultPVArray<T>::serialize(ByteBuffer *pbuffer,
             SerializableControl *pflusher) const {
     serialize(pbuffer, pflusher, 0, this->getLength());
 }
 
 template<typename T>
-void PVValueArray<T>::deserialize(ByteBuffer *pbuffer,
+void DefaultPVArray<T>::deserialize(ByteBuffer *pbuffer,
         DeserializableControl *pcontrol) {
 
     size_t size = this->getArray()->getArraySizeType() == Array::fixed ?
@@ -363,7 +371,7 @@ void PVValueArray<T>::deserialize(ByteBuffer *pbuffer,
 }
 
 template<typename T>
-void PVValueArray<T>::serialize(ByteBuffer *pbuffer,
+void DefaultPVArray<T>::serialize(ByteBuffer *pbuffer,
         SerializableControl *pflusher, size_t offset, size_t count) const
 {
     //TODO: avoid incrementing the ref counter...
@@ -407,7 +415,7 @@ void PVValueArray<T>::serialize(ByteBuffer *pbuffer,
 // specializations for string
 
 template<>
-void PVValueArray<string>::deserialize(ByteBuffer *pbuffer,
+void DefaultPVArray<string>::deserialize(ByteBuffer *pbuffer,
         DeserializableControl *pcontrol) {
 
     size_t size = this->getArray()->getArraySizeType() == Array::fixed ?
@@ -434,7 +442,7 @@ void PVValueArray<string>::deserialize(ByteBuffer *pbuffer,
 }
 
 template<>
-void PVValueArray<string>::serialize(ByteBuffer *pbuffer,
+void DefaultPVArray<string>::serialize(ByteBuffer *pbuffer,
         SerializableControl *pflusher, size_t offset, size_t count) const {
 
     const_svector temp(value);
@@ -450,17 +458,18 @@ void PVValueArray<string>::serialize(ByteBuffer *pbuffer,
     }
 }
 
-template<typename T>
-void PVValueArray<T>::_getAsVoid(epics::pvData::shared_vector<const void>& out) const
-{
-    out = static_shared_vector_cast<const void>(this->view());
-}
-
-template<typename T>
-void PVValueArray<T>::_putFromVoid(const epics::pvData::shared_vector<const void>& in)
-{
-    this->replace(shared_vector_convert<const T>(in));
-}
+typedef DefaultPVArray<boolean> DefaultPVBooleanArray;
+typedef DefaultPVArray<int8> BasePVByteArray;
+typedef DefaultPVArray<int16> BasePVShortArray;
+typedef DefaultPVArray<int32> BasePVIntArray;
+typedef DefaultPVArray<int64> BasePVLongArray;
+typedef DefaultPVArray<uint8> BasePVUByteArray;
+typedef DefaultPVArray<uint16> BasePVUShortArray;
+typedef DefaultPVArray<uint32> BasePVUIntArray;
+typedef DefaultPVArray<uint64> BasePVULongArray;
+typedef DefaultPVArray<float> BasePVFloatArray;
+typedef DefaultPVArray<double> BasePVDoubleArray;
+typedef DefaultPVArray<string> BasePVStringArray;
 
 // Factory
 
@@ -555,29 +564,29 @@ PVScalarPtr PVDataCreate::createPVScalar(ScalarConstPtr const & scalar)
      ScalarType scalarType = scalar->getScalarType();
      switch(scalarType) {
      case pvBoolean:
-         return PVScalarPtr(new PVBoolean(scalar));
+         return PVScalarPtr(new BasePVBoolean(scalar));
      case pvByte:
-         return PVScalarPtr(new PVByte(scalar));
+         return PVScalarPtr(new BasePVByte(scalar));
      case pvShort:
-         return PVScalarPtr(new PVShort(scalar));
+         return PVScalarPtr(new BasePVShort(scalar));
      case pvInt:
-         return PVScalarPtr(new PVInt(scalar));
+         return PVScalarPtr(new BasePVInt(scalar));
      case pvLong:
-         return PVScalarPtr(new PVLong(scalar));
+         return PVScalarPtr(new BasePVLong(scalar));
      case pvUByte:
-         return PVScalarPtr(new PVUByte(scalar));
+         return PVScalarPtr(new BasePVUByte(scalar));
      case pvUShort:
-         return PVScalarPtr(new PVUShort(scalar));
+         return PVScalarPtr(new BasePVUShort(scalar));
      case pvUInt:
-         return PVScalarPtr(new PVUInt(scalar));
+         return PVScalarPtr(new BasePVUInt(scalar));
      case pvULong:
-         return PVScalarPtr(new PVULong(scalar));
+         return PVScalarPtr(new BasePVULong(scalar));
      case pvFloat:
-         return PVScalarPtr(new PVFloat(scalar));
+         return PVScalarPtr(new BasePVFloat(scalar));
      case pvDouble:
-         return PVScalarPtr(new PVDouble(scalar));
+         return PVScalarPtr(new BasePVDouble(scalar));
      case pvString:
-         return PVScalarPtr(new PVString(scalar));
+         return PVScalarPtr(new BasePVString(scalar));
      }
      throw std::logic_error("PVDataCreate::createPVScalar should never get here");
 }
@@ -602,29 +611,29 @@ PVScalarArrayPtr PVDataCreate::createPVScalarArray(
 {
      switch(scalarArray->getElementType()) {
      case pvBoolean:
-           return PVScalarArrayPtr(new PVBooleanArray(scalarArray));
+           return PVScalarArrayPtr(new DefaultPVBooleanArray(scalarArray));
      case pvByte:
-           return PVScalarArrayPtr(new PVByteArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVByteArray(scalarArray));
      case pvShort:
-           return PVScalarArrayPtr(new PVShortArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVShortArray(scalarArray));
      case pvInt:
-           return PVScalarArrayPtr(new PVIntArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVIntArray(scalarArray));
      case pvLong:
-           return PVScalarArrayPtr(new PVLongArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVLongArray(scalarArray));
      case pvUByte:
-           return PVScalarArrayPtr(new PVUByteArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVUByteArray(scalarArray));
      case pvUShort:
-           return PVScalarArrayPtr(new PVUShortArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVUShortArray(scalarArray));
      case pvUInt:
-           return PVScalarArrayPtr(new PVUIntArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVUIntArray(scalarArray));
      case pvULong:
-           return PVScalarArrayPtr(new PVULongArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVULongArray(scalarArray));
      case pvFloat:
-           return PVScalarArrayPtr(new PVFloatArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVFloatArray(scalarArray));
      case pvDouble:
-           return PVScalarArrayPtr(new PVDoubleArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVDoubleArray(scalarArray));
      case pvString:
-           return PVScalarArrayPtr(new PVStringArray(scalarArray));
+           return PVScalarArrayPtr(new BasePVStringArray(scalarArray));
      }
      throw std::logic_error("PVDataCreate::createPVScalarArray should never get here");
      
@@ -715,51 +724,23 @@ PVUnionPtr PVDataCreate::createPVUnion(PVUnionPtr const & unionToClone)
     return punion;
 }
 
-namespace detail {
-struct pvfield_factory {
-    PVDataCreatePtr pvDataCreate;
-    pvfield_factory() :pvDataCreate(new PVDataCreate()) {
-        registerRefCounter("PVField", &PVField::num_instances);
-    }
-};
-}
-
-static detail::pvfield_factory* pvfield_factory_s;
-static epicsThreadOnceId pvfield_factory_once = EPICS_THREAD_ONCE_INIT;
-
-static void pvfield_factory_init(void*)
+// TODO not thread-safe (local static initializers)
+// TODO replace with non-locking singleton pattern
+PVDataCreatePtr PVDataCreate::getPVDataCreate()
 {
-    try {
-        pvfield_factory_s = new detail::pvfield_factory;
-    }catch(std::exception& e){
-        std::cerr<<"Error initializing getFieldCreate() : "<<e.what()<<"\n";
-    }
+    static PVDataCreatePtr pvDataCreate;
+    static Mutex mutex;
+    Lock xx(mutex);
+
+    if(pvDataCreate.get()==0) pvDataCreate = PVDataCreatePtr(new PVDataCreate());
+    return pvDataCreate;
 }
 
-const PVDataCreatePtr& PVDataCreate::getPVDataCreate()
-{
-    epicsThreadOnce(&pvfield_factory_once, &pvfield_factory_init, 0);
-    if(!pvfield_factory_s->pvDataCreate)
-        throw std::logic_error("getPVDataCreate() not initialized");
-    return pvfield_factory_s->pvDataCreate;
+PVDataCreatePtr getPVDataCreate() {
+     return PVDataCreate::getPVDataCreate();
 }
 
-// explicitly instanciate to ensure that windows
-// builds emit exported symbols for inline'd methods
-template class PVScalarValue<boolean>;
-template class PVScalarValue<int8>;
-template class PVScalarValue<uint8>;
-template class PVScalarValue<int16>;
-template class PVScalarValue<uint16>;
-template class PVScalarValue<int32>;
-template class PVScalarValue<uint32>;
-template class PVScalarValue<int64>;
-template class PVScalarValue<uint64>;
-template class PVScalarValue<float>;
-template class PVScalarValue<double>;
-template class PVScalarValue<std::string>;
-
-}} // namespace epics::pvData
+}}
 
 namespace std{
     std::ostream& operator<<(std::ostream& o, const epics::pvData::PVField *ptr)

src/factory/PVField.cpp

@@ -17,7 +17,6 @@
 #include <pv/lock.h>
 #include <pv/pvData.h>
 #include <pv/factory.h>
-#include <pv/reftrack.h>
 
 using std::tr1::const_pointer_cast;
 using std::size_t;
@@ -25,20 +24,15 @@ using std::string;
 
 namespace epics { namespace pvData {
 
-size_t PVField::num_instances;
-
 PVField::PVField(FieldConstPtr field)
 : parent(NULL),field(field),
   fieldOffset(0), nextFieldOffset(0),
   immutable(false)
 {
-    REFTRACE_INCREMENT(num_instances);
 }
 
 PVField::~PVField()
-{
-    REFTRACE_DECREMENT(num_instances);
-}
+{ }
 
 
 size_t PVField::getFieldOffset() const
@@ -60,16 +54,22 @@ size_t PVField::getNumberFields() const
 }
 
 
+bool PVField::isImmutable() const {return immutable;}
+
 void PVField::setImmutable() {immutable = true;}
 
+const FieldConstPtr & PVField::getField() const {return field;}
+
+PVStructure *PVField::getParent() const {return parent;}
+
 void PVField::postPut() 
 {
-   if(postHandler) postHandler->postPut();
+   if(postHandler.get()!=NULL) postHandler->postPut();
 }
 
 void PVField::setPostHandler(PostHandlerPtr const &handler)
 {
-    if(postHandler) {
+    if(postHandler.get()!=NULL) {
         if(postHandler.get()==handler.get()) return;
         throw std::logic_error(
             "PVField::setPostHandler a postHandler is already registered");
@@ -97,7 +97,7 @@ std::ostream& operator<<(std::ostream& o, const PVField& f)
 string PVField::getFullName() const
 {
     string ret(fieldName);
-    for(const PVField *fld=getParent(); fld; fld=fld->getParent())
+    for(PVField *fld=getParent(); fld; fld=fld->getParent())
     {
         if(fld->getFieldName().size()==0) break;
         ret = fld->getFieldName() + '.' + ret;
@@ -184,16 +184,62 @@ void PVField::copy(const PVField& from)
     if(isImmutable())
         throw std::invalid_argument("destination is immutable");
 
-    if (getField() != from.getField())
+    if (getField()->getType() != from.getField()->getType())
         throw std::invalid_argument("field types do not match");
 
-    copyUnchecked(from);
+    switch(getField()->getType())
+    {
+    case scalar:
+        {
+             const PVScalar* fromS = static_cast<const PVScalar*>(&from);
+             PVScalar* toS = static_cast<PVScalar*>(this);
+             toS->copy(*fromS);
+             break;
+        }
+    case scalarArray:
+        {
+             const PVScalarArray* fromS = static_cast<const PVScalarArray*>(&from);
+             PVScalarArray* toS = static_cast<PVScalarArray*>(this);
+             toS->copy(*fromS);
+             break;
+        }
+    case structure:
+        {
+             const PVStructure* fromS = static_cast<const PVStructure*>(&from);
+             PVStructure* toS = static_cast<PVStructure*>(this);
+             toS->copy(*fromS);
+             break;
+        }
+    case structureArray:
+        {
+             const PVStructureArray* fromS = static_cast<const PVStructureArray*>(&from);
+             PVStructureArray* toS = static_cast<PVStructureArray*>(this);
+             toS->copy(*fromS);
+             break;
+        }
+    case union_:
+        {
+             const PVUnion* fromS = static_cast<const PVUnion*>(&from);
+             PVUnion* toS = static_cast<PVUnion*>(this);
+             toS->copy(*fromS);
+             break;
+        }
+    case unionArray:
+        {
+             const PVUnionArray* fromS = static_cast<const PVUnionArray*>(&from);
+             PVUnionArray* toS = static_cast<PVUnionArray*>(this);
+             toS->copy(*fromS);
+             break;
+        }
+    default:
+        {
+            throw std::logic_error("PVField::copy unknown type");
+        }
+    }
 }
 
 void PVField::copyUnchecked(const PVField& from)
 {
-    assert(getField()==from.getField());
-
     switch(getField()->getType())
     {
     case scalar:

src/factory/PVStructure.cpp

@@ -24,6 +24,25 @@ using std::string;
 
 namespace epics { namespace pvData {
 
+PVFieldPtr PVStructure::nullPVField;
+PVBooleanPtr PVStructure::nullPVBoolean;
+PVBytePtr PVStructure::nullPVByte;
+PVShortPtr PVStructure::nullPVShort;
+PVIntPtr PVStructure::nullPVInt;
+PVLongPtr PVStructure::nullPVLong;
+PVUBytePtr PVStructure::nullPVUByte;
+PVUShortPtr PVStructure::nullPVUShort;
+PVUIntPtr PVStructure::nullPVUInt;
+PVULongPtr PVStructure::nullPVULong;
+PVFloatPtr PVStructure::nullPVFloat;
+PVDoublePtr PVStructure::nullPVDouble;
+PVStringPtr PVStructure::nullPVString;
+PVStructurePtr PVStructure::nullPVStructure;
+PVStructureArrayPtr PVStructure::nullPVStructureArray;
+PVUnionPtr PVStructure::nullPVUnion;
+PVUnionArrayPtr PVStructure::nullPVUnionArray;
+PVScalarArrayPtr PVStructure::nullPVScalarArray;
+
 PVStructure::PVStructure(StructureConstPtr const & structurePtr)
 : PVField(structurePtr),
   structurePtr(structurePtr),
@@ -60,7 +79,9 @@ PVStructure::PVStructure(StructureConstPtr const & structurePtr,
     }
 }
 
-PVStructure::~PVStructure() {}
+PVStructure::~PVStructure()
+{
+}
 
 void PVStructure::setImmutable()
 {
@@ -72,42 +93,60 @@ void PVStructure::setImmutable()
     PVField::setImmutable();
 }
 
-PVFieldPtr  PVStructure::getSubFieldImpl(size_t fieldOffset, bool throws) const
+StructureConstPtr PVStructure::getStructure() const
 {
-    const PVStructure *current = this;
+    return structurePtr;
+}
 
-recurse:
-    // we don't permit self lookup
-    if(fieldOffset<=current->getFieldOffset() || fieldOffset>=current->getNextFieldOffset()) {
-        if(throws) {
-            std::stringstream ss;
-            ss << "Failed to get field with offset "
-               << fieldOffset << " (Invalid offset)" ;
-            throw std::runtime_error(ss.str());
-        } else {
-            return PVFieldPtr();
+const PVFieldPtrArray & PVStructure::getPVFields() const
+{
+    return pvFields;
+}
+
+PVFieldPtr  PVStructure::getSubField(const char * fieldName) const
+{
+    PVField * field = getSubFieldImpl(fieldName, false);
+    if (field)
+       return field->shared_from_this();
+    else
+       return PVFieldPtr();
+}
+
+
+PVFieldPtr  PVStructure::getSubField(size_t fieldOffset) const
+{
+    if(fieldOffset<=getFieldOffset()) {
+        return nullPVField;
+    }
+    if(fieldOffset>getNextFieldOffset()) return nullPVField;
+    size_t numFields = pvFields.size();
+    for(size_t i=0; i<numFields; i++) {
+        PVFieldPtr pvField  = pvFields[i];
+        if(pvField->getFieldOffset()==fieldOffset) return pvFields[i];
+        if(pvField->getNextFieldOffset()<=fieldOffset) continue;
+        if(pvField->getField()->getType()==structure) {
+            PVStructure *pvStructure = static_cast<PVStructure *>(pvField.get());
+            return pvStructure->getSubField(fieldOffset);
         }
     }
-
-    for(size_t i=0, numFields = current->pvFields.size(); i<numFields; i++) {
-        const PVFieldPtr& pvField  = current->pvFields[i];
-
-        if(pvField->getFieldOffset()==fieldOffset) {
-            return pvField;
-
-        } else if(pvField->getNextFieldOffset()<=fieldOffset) {
-            continue;
-
-        } else if(pvField->getField()->getType()==structure) {
-            current = static_cast<PVStructure *>(pvField.get());
-            goto recurse;
-        }
-    }
-    // the first test against current->getNextFieldOffset() would avoid this
     throw std::logic_error("PVStructure.getSubField: Logic error");
 }
 
-PVFieldPtr PVStructure::getSubFieldImpl(const char *name, bool throws) const
+PVFieldPtr PVStructure::getSubFieldT(std::size_t fieldOffset) const
+{
+    PVFieldPtr pvField = getSubField(fieldOffset);
+    if (pvField.get())
+        return pvField;
+    else
+    {
+        std::stringstream ss;
+        ss << "Failed to get field with offset "
+           << fieldOffset << "(Invalid offset)" ;
+        throw std::runtime_error(ss.str());
+    }
+}
+
+PVField* PVStructure::getSubFieldImpl(const char *name, bool throws) const
 {
     const PVStructure *parent = this;
     if(!name)
@@ -115,7 +154,7 @@ PVFieldPtr PVStructure::getSubFieldImpl(const char *name, bool throws) const
         if (throws)
             throw std::invalid_argument("Failed to get field: (Field name is NULL string)");
         else
-            return PVFieldPtr();
+            return NULL;
     }
     const char *fullName = name;
     while(true) {
@@ -131,7 +170,7 @@ PVFieldPtr PVStructure::getSubFieldImpl(const char *name, bool throws) const
                 throw std::runtime_error(ss.str());
             }
             else
-                return PVFieldPtr();
+                return NULL;
         }
         size_t N = sep-name;
         if(N==0)
@@ -144,7 +183,7 @@ PVFieldPtr PVStructure::getSubFieldImpl(const char *name, bool throws) const
                 throw std::runtime_error(ss.str());
             }
             else
-                return PVFieldPtr();
+                return NULL;
         }
 
         const PVFieldPtrArray& pvFields = parent->getPVFields();
@@ -171,7 +210,7 @@ PVFieldPtr PVStructure::getSubFieldImpl(const char *name, bool throws) const
                 throw std::runtime_error(ss.str());   
             }
             else
-                return PVFieldPtr();
+                return NULL;
         }
 
         if(*sep) {
@@ -188,32 +227,18 @@ PVFieldPtr PVStructure::getSubFieldImpl(const char *name, bool throws) const
                     throw std::runtime_error(ss.str());
                 }
                 else
-                    return PVFieldPtr();
+                    return NULL;
             }
             child = NULL;
             name = sep+1; // skip past '.'
             // loop around to new parent
 
         } else {
-            return child->shared_from_this();
+            return child;
         }
     }
 }
 
-void PVStructure::throwBadFieldType(const char *name)
-{
-    std::ostringstream ss;
-    ss << "Failed to get field: " << name << " (Field has wrong type)";
-    throw std::runtime_error(ss.str());
-}
-
-void PVStructure::throwBadFieldType(std::size_t fieldOffset)
-{
-    std::stringstream ss;
-    ss << "Failed to get field with offset "
-       << fieldOffset << " (Field has wrong type)";
-    throw std::runtime_error(ss.str());
-}
 
 void PVStructure::serialize(ByteBuffer *pbuffer,
         SerializableControl *pflusher) const {
@@ -247,7 +272,7 @@ void PVStructure::serialize(ByteBuffer *pbuffer,
 
     size_t fieldsSize = pvFields.size();
     for(size_t i = 0; i<fieldsSize; i++) {
-        PVField* pvField = pvFields[i].get();
+        PVFieldPtr pvField = pvFields[i];
         offset = pvField->getFieldOffset();
         int32 inumberFields = static_cast<int32>(pvField->getNumberFields());
         next = pbitSet->nextSetBit(static_cast<uint32>(offset));
@@ -261,7 +286,8 @@ void PVStructure::serialize(ByteBuffer *pbuffer,
         if(inumberFields==1) {
             pvField->serialize(pbuffer, pflusher);
         } else {
-            static_cast<PVStructure*>(pvField)->serialize(pbuffer, pflusher, pbitSet);
+            PVStructurePtr pvStructure = std::tr1::static_pointer_cast<PVStructure>(pvField);
+            pvStructure->serialize(pbuffer, pflusher, pbitSet);
        }
     }
 }

src/factory/PVStructureArray.cpp

@@ -76,14 +76,14 @@ void PVStructureArray::compress() {
     size_t newLength = 0;
 
     for(size_t i=0; i<length; i++) {
-        if(vec[i]) {
+        if(vec[i].get()!=NULL) {
             newLength++;
             continue;
         }
         // find first non 0
         size_t notNull = 0;
         for(size_t j=i+1;j<length;j++) {
-            if(vec[j]) {
+            if(vec[j].get()!=NULL) {
                 notNull = j;
                 break;
             }

src/factory/PVUnion.cpp

@@ -25,7 +25,7 @@ using std::string;
 namespace epics { namespace pvData {
 	
 #define PVUNION_UNDEFINED_INDEX -1
-const int32 PVUnion::UNDEFINED_INDEX = PVUNION_UNDEFINED_INDEX;
+int32 PVUnion::UNDEFINED_INDEX = PVUNION_UNDEFINED_INDEX;
 
 PVDataCreatePtr PVUnion::pvDataCreate(getPVDataCreate());
 
@@ -40,7 +40,24 @@ PVUnion::PVUnion(UnionConstPtr const & unionPtr)
 
 #undef PVUNION_UNDEFINED_INDEX
 
-PVUnion::~PVUnion() {}
+PVUnion::~PVUnion()
+{
+}
+
+UnionConstPtr PVUnion::getUnion() const
+{
+    return unionPtr;
+}
+
+PVFieldPtr PVUnion::get() const
+{
+    return value;
+}
+
+int32 PVUnion::getSelectedIndex() const
+{
+    return selector;
+}
 
 string PVUnion::getSelectedFieldName() const
 {
@@ -53,11 +70,8 @@ string PVUnion::getSelectedFieldName() const
 
 PVFieldPtr PVUnion::select(int32 index)
 {
-    if (variant && index != UNDEFINED_INDEX)
-        throw std::invalid_argument("index out of bounds");
-
     // no change
-    if (selector == index && !variant)
+    if (selector == index)
         return value;
 
     if (index == UNDEFINED_INDEX)
@@ -66,7 +80,9 @@ PVFieldPtr PVUnion::select(int32 index)
         value.reset();
         return value;
     }
-    else if (index < 0 || size_t(index) >= unionPtr->getFields().size())
+    else if (variant)
+        throw std::invalid_argument("index out of bounds");
+    else if (index < 0 || index > static_cast<int32>(unionPtr->getFields().size()))
         throw std::invalid_argument("index out of bounds");
 
     FieldConstPtr field = unionPtr->getField(index);
@@ -83,6 +99,11 @@ PVFieldPtr PVUnion::select(string const & fieldName)
         throw std::invalid_argument("no such fieldName");
 	return select(index);
 }
+	
+void PVUnion::set(PVFieldPtr const & value)
+{
+    set(selector, value);
+}
 
 void PVUnion::set(int32 index, PVFieldPtr const & value)
 {
@@ -93,14 +114,14 @@ void PVUnion::set(int32 index, PVFieldPtr const & value)
         if (index == UNDEFINED_INDEX)
         {
             // for undefined index we accept only null values
-            if (value)
+            if (value.get())
 				throw std::invalid_argument("non-null value for index == UNDEFINED_INDEX");
         }
-        else if (index < 0 || size_t(index) >= unionPtr->getFields().size())
+        else if (index < 0 || index > static_cast<int32>(unionPtr->getFields().size()))
             throw std::invalid_argument("index out of bounds");
-        else if (!value)
-            throw std::invalid_argument("Can't set defined index w/ NULL");
-        else if (value->getField() != unionPtr->getField(index))
+
+        // value type must match
+        if (value->getField() != unionPtr->getField(index))
 			throw std::invalid_argument("selected field and its introspection data do not match");
     }
 
@@ -115,7 +136,7 @@ void PVUnion::set(string const & fieldName, PVFieldPtr const & value)
     if (index == -1)
         throw std::invalid_argument("no such fieldName");
 
-    set(index, value);
+	set(index, value);
 }
 
 void PVUnion::serialize(ByteBuffer *pbuffer, SerializableControl *pflusher) const
@@ -181,7 +202,7 @@ std::ostream& PVUnion::dumpValue(std::ostream& o) const
     o << format::indent() << getUnion()->getID() << ' ' << getFieldName() << std::endl;
     {
     	format::indent_scope s(o);
-        const PVField::const_shared_pointer& fieldField = get();
+		PVFieldPtr fieldField = get();
 		if (fieldField.get() == NULL)
 		  o << format::indent() << "(none)" << std::endl;
 		else
@@ -210,7 +231,7 @@ void PVUnion::copy(const PVUnion& from)
 void PVUnion::copyUnchecked(const PVUnion& from)
 {
 
-    const PVField::const_shared_pointer& fromValue = from.get();
+    PVFieldPtr fromValue = from.get();
     if (from.getUnion()->isVariant())
     {
         if (fromValue.get() == 0)

src/factory/PVUnionArray.cpp

@@ -76,14 +76,14 @@ void PVUnionArray::compress() {
     size_t newLength = 0;
 
     for(size_t i=0; i<length; i++) {
-        if(vec[i]) {
+        if(vec[i].get()!=NULL) {
             newLength++;
             continue;
         }
         // find first non 0
         size_t notNull = 0;
         for(size_t j=i+1;j<length;j++) {
-            if(vec[j]) {
+            if(vec[j].get()!=NULL) {
                 notNull = j;
                 break;
             }

src/factory/StandardField.cpp

@@ -11,7 +11,6 @@
 #include <stdexcept>
 
 #include <epicsMutex.h>
-#include <epicsThread.h>
 
 #define epicsExportSharedSymbols
 #include <pv/lock.h>
@@ -23,86 +22,33 @@ using std::string;
 
 namespace epics { namespace pvData { 
 
-static
-StructureConstPtr buildValueAlarm(ScalarType vtype)
-{
-    return FieldBuilder::begin()
-            ->setId("valueAlarm_t")
-            ->add("active", pvBoolean)
-            ->add("lowAlarmLimit", vtype)
-            ->add("lowWarningLimit", vtype)
-            ->add("highWarningLimit", vtype)
-            ->add("highAlarmLimit", vtype)
-            ->add("lowAlarmSeverity", pvInt)
-            ->add("lowWarningSeverity", pvInt)
-            ->add("highWarningSeverity", pvInt)
-            ->add("highAlarmSeverity", pvInt)
-            ->add("hysteresis", pvByte)
-            ->createStructure();
-}
 
 StandardField::StandardField()
-    :fieldCreate(getFieldCreate())
-    ,notImplemented("not implemented")
-    ,valueFieldName("value")
-
-    ,alarmField(FieldBuilder::begin()
-                ->setId("alarm_t")
-                ->add("severity", pvInt)
-                ->add("status", pvInt)
-                ->add("message", pvString)
-                ->createStructure())
-
-    ,timeStampField(FieldBuilder::begin()
-                    ->setId("time_t")
-                    ->add("secondsPastEpoch", pvLong)
-                    ->add("nanoseconds", pvInt)
-                    ->add("userTag", pvInt)
-                    ->createStructure())
-
-    ,displayField(FieldBuilder::begin()
-                  ->setId("display_t")
-                  ->add("limitLow", pvDouble)
-                  ->add("limitHigh", pvDouble)
-                  ->add("description", pvString)
-                  ->add("format", pvString)
-                  ->add("units", pvString)
-                  ->createStructure())
-
-    ,controlField(FieldBuilder::begin()
-                  ->setId("control_t")
-                  ->add("limitLow", pvDouble)
-                  ->add("limitHigh", pvDouble)
-                  ->add("minStep", pvDouble)
-                  ->createStructure())
-
-    ,booleanAlarmField(FieldBuilder::begin()
-                       ->setId("valueAlarm_t")
-                       ->add("active", pvBoolean)
-                       ->add("falseSeverity", pvInt)
-                       ->add("trueSeverity", pvInt)
-                       ->add("changeStateSeverity", pvInt)
-                       ->createStructure())
-
-    ,byteAlarmField(buildValueAlarm(pvByte))
-    ,shortAlarmField(buildValueAlarm(pvShort))
-    ,intAlarmField(buildValueAlarm(pvInt))
-    ,longAlarmField(buildValueAlarm(pvLong))
-    ,ubyteAlarmField(buildValueAlarm(pvUByte))
-    ,ushortAlarmField(buildValueAlarm(pvUShort))
-    ,uintAlarmField(buildValueAlarm(pvUInt))
-    ,ulongAlarmField(buildValueAlarm(pvULong))
-    ,floatAlarmField(buildValueAlarm(pvFloat))
-    ,doubleAlarmField(buildValueAlarm(pvDouble))
-
-    ,enumeratedAlarmField(FieldBuilder::begin()
-                          ->setId("valueAlarm_t")
-                          ->add("active", pvBoolean)
-                          ->add("stateSeverity", pvInt)
-                          ->add("changeStateSeverity", pvInt)
-                          ->createStructure())
+:  fieldCreate(getFieldCreate()),
+   notImplemented("not implemented"),
+   valueFieldName("value")
 {}
 
+void StandardField::init()
+{
+    createAlarm();
+    createTimeStamp();
+    createDisplay();
+    createControl();
+    createBooleanAlarm();
+    createByteAlarm();
+    createShortAlarm();
+    createIntAlarm();
+    createLongAlarm();
+    createUByteAlarm();
+    createUShortAlarm();
+    createUIntAlarm();
+    createULongAlarm();
+    createFloatAlarm();
+    createDoubleAlarm();
+    createEnumeratedAlarm();
+}
+
 StandardField::~StandardField(){}
 
 StructureConstPtr StandardField::createProperties(string id,FieldConstPtr field,string properties)
@@ -199,6 +145,361 @@ StructureConstPtr StandardField::createProperties(string id,FieldConstPtr field,
     return fieldCreate->createStructure(id,names,fields);
 }
 
+void StandardField::createAlarm() {
+    size_t num = 3;
+    FieldConstPtrArray fields(num);
+    StringArray names(num);
+    names[0] = "severity";
+    names[1] = "status";
+    names[2] = "message";
+    fields[0] = fieldCreate->createScalar(pvInt);
+    fields[1] = fieldCreate->createScalar(pvInt);
+    fields[2] = fieldCreate->createScalar(pvString);
+    alarmField = fieldCreate->createStructure("alarm_t",names,fields);
+}
+
+void StandardField::createTimeStamp() {
+    size_t num = 3;
+    FieldConstPtrArray fields(num);
+    StringArray names(num);
+    names[0] = "secondsPastEpoch";
+    names[1] = "nanoseconds";
+    names[2] = "userTag";
+    fields[0] = fieldCreate->createScalar(pvLong);
+    fields[1] = fieldCreate->createScalar(pvInt);
+    fields[2] = fieldCreate->createScalar(pvInt);
+    timeStampField = fieldCreate->createStructure("time_t",names,fields);
+}
+
+void StandardField::createDisplay() {
+    size_t num = 5;
+    FieldConstPtrArray fields(num);
+    StringArray names(num);
+    names[0] = "limitLow";
+    names[1] = "limitHigh";
+    names[2] = "description";
+    names[3] = "format";
+    names[4] = "units";
+    fields[0] = fieldCreate->createScalar(pvDouble);
+    fields[1] = fieldCreate->createScalar(pvDouble);
+    fields[2] = fieldCreate->createScalar(pvString);
+    fields[3] = fieldCreate->createScalar(pvString);
+    fields[4] = fieldCreate->createScalar(pvString);
+    displayField = fieldCreate->createStructure("display_t",names,fields);
+}
+
+void StandardField::createControl() {
+    size_t num = 3;
+    FieldConstPtrArray fields(num);
+    StringArray names(num);
+    names[0] = "limitLow";
+    names[1] = "limitHigh";
+    names[2] = "minStep";
+    fields[0] = fieldCreate->createScalar(pvDouble);
+    fields[1] = fieldCreate->createScalar(pvDouble);
+    fields[2] = fieldCreate->createScalar(pvDouble);
+    controlField = fieldCreate->createStructure("control_t",names,fields);
+}
+
+void StandardField::createBooleanAlarm() {
+    size_t numFields = 4;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "falseSeverity";
+    names[2] = "trueSeverity";
+    names[3] = "changeStateSeverity";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvInt);
+    fields[2] = fieldCreate->createScalar(pvInt);
+    fields[3] = fieldCreate->createScalar(pvInt);
+    booleanAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createByteAlarm() {
+    size_t numFields = 10;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "lowAlarmLimit";
+    names[2] = "lowWarningLimit";
+    names[3] = "highWarningLimit";
+    names[4] = "highAlarmLimit";
+    names[5] = "lowAlarmSeverity";
+    names[6] = "lowWarningSeverity";
+    names[7] = "highWarningSeverity";
+    names[8] = "highAlarmSeverity";
+    names[9] =  "hysteresis";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvByte);
+    fields[2] = fieldCreate->createScalar(pvByte);
+    fields[3] = fieldCreate->createScalar(pvByte);
+    fields[4] = fieldCreate->createScalar(pvByte);
+    fields[5] = fieldCreate->createScalar(pvInt);
+    fields[6] = fieldCreate->createScalar(pvInt);
+    fields[7] = fieldCreate->createScalar(pvInt);
+    fields[8] = fieldCreate->createScalar(pvInt);
+    fields[9] = fieldCreate->createScalar(pvByte);
+    byteAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createShortAlarm() {
+    size_t numFields = 10;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "lowAlarmLimit";
+    names[2] = "lowWarningLimit";
+    names[3] = "highWarningLimit";
+    names[4] = "highAlarmLimit";
+    names[5] = "lowAlarmSeverity";
+    names[6] = "lowWarningSeverity";
+    names[7] = "highWarningSeverity";
+    names[8] = "highAlarmSeverity";
+    names[9] =  "hysteresis";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvShort);
+    fields[2] = fieldCreate->createScalar(pvShort);
+    fields[3] = fieldCreate->createScalar(pvShort);
+    fields[4] = fieldCreate->createScalar(pvShort);
+    fields[5] = fieldCreate->createScalar(pvInt);
+    fields[6] = fieldCreate->createScalar(pvInt);
+    fields[7] = fieldCreate->createScalar(pvInt);
+    fields[8] = fieldCreate->createScalar(pvInt);
+    fields[9] = fieldCreate->createScalar(pvShort);
+    shortAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createIntAlarm() {
+    size_t numFields = 10;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "lowAlarmLimit";
+    names[2] = "lowWarningLimit";
+    names[3] = "highWarningLimit";
+    names[4] = "highAlarmLimit";
+    names[5] = "lowAlarmSeverity";
+    names[6] = "lowWarningSeverity";
+    names[7] = "highWarningSeverity";
+    names[8] = "highAlarmSeverity";
+    names[9] =  "hysteresis";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvInt);
+    fields[2] = fieldCreate->createScalar(pvInt);
+    fields[3] = fieldCreate->createScalar(pvInt);
+    fields[4] = fieldCreate->createScalar(pvInt);
+    fields[5] = fieldCreate->createScalar(pvInt);
+    fields[6] = fieldCreate->createScalar(pvInt);
+    fields[7] = fieldCreate->createScalar(pvInt);
+    fields[8] = fieldCreate->createScalar(pvInt);
+    fields[9] = fieldCreate->createScalar(pvInt);
+    intAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createLongAlarm() {
+    size_t numFields = 10;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "lowAlarmLimit";
+    names[2] = "lowWarningLimit";
+    names[3] = "highWarningLimit";
+    names[4] = "highAlarmLimit";
+    names[5] = "lowAlarmSeverity";
+    names[6] = "lowWarningSeverity";
+    names[7] = "highWarningSeverity";
+    names[8] = "highAlarmSeverity";
+    names[9] =  "hysteresis";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvLong);
+    fields[2] = fieldCreate->createScalar(pvLong);
+    fields[3] = fieldCreate->createScalar(pvLong);
+    fields[4] = fieldCreate->createScalar(pvLong);
+    fields[5] = fieldCreate->createScalar(pvInt);
+    fields[6] = fieldCreate->createScalar(pvInt);
+    fields[7] = fieldCreate->createScalar(pvInt);
+    fields[8] = fieldCreate->createScalar(pvInt);
+    fields[9] = fieldCreate->createScalar(pvLong);
+    longAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createUByteAlarm() {
+    size_t numFields = 10;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "lowAlarmLimit";
+    names[2] = "lowWarningLimit";
+    names[3] = "highWarningLimit";
+    names[4] = "highAlarmLimit";
+    names[5] = "lowAlarmSeverity";
+    names[6] = "lowWarningSeverity";
+    names[7] = "highWarningSeverity";
+    names[8] = "highAlarmSeverity";
+    names[9] =  "hysteresis";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvUByte);
+    fields[2] = fieldCreate->createScalar(pvUByte);
+    fields[3] = fieldCreate->createScalar(pvUByte);
+    fields[4] = fieldCreate->createScalar(pvUByte);
+    fields[5] = fieldCreate->createScalar(pvInt);
+    fields[6] = fieldCreate->createScalar(pvInt);
+    fields[7] = fieldCreate->createScalar(pvInt);
+    fields[8] = fieldCreate->createScalar(pvInt);
+    fields[9] = fieldCreate->createScalar(pvUByte);
+    ubyteAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createUShortAlarm() {
+    size_t numFields = 10;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "lowAlarmLimit";
+    names[2] = "lowWarningLimit";
+    names[3] = "highWarningLimit";
+    names[4] = "highAlarmLimit";
+    names[5] = "lowAlarmSeverity";
+    names[6] = "lowWarningSeverity";
+    names[7] = "highWarningSeverity";
+    names[8] = "highAlarmSeverity";
+    names[9] =  "hysteresis";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvUShort);
+    fields[2] = fieldCreate->createScalar(pvUShort);
+    fields[3] = fieldCreate->createScalar(pvUShort);
+    fields[4] = fieldCreate->createScalar(pvUShort);
+    fields[5] = fieldCreate->createScalar(pvInt);
+    fields[6] = fieldCreate->createScalar(pvInt);
+    fields[7] = fieldCreate->createScalar(pvInt);
+    fields[8] = fieldCreate->createScalar(pvInt);
+    fields[9] = fieldCreate->createScalar(pvUShort);
+    ushortAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createUIntAlarm() {
+    size_t numFields = 10;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "lowAlarmLimit";
+    names[2] = "lowWarningLimit";
+    names[3] = "highWarningLimit";
+    names[4] = "highAlarmLimit";
+    names[5] = "lowAlarmSeverity";
+    names[6] = "lowWarningSeverity";
+    names[7] = "highWarningSeverity";
+    names[8] = "highAlarmSeverity";
+    names[9] =  "hysteresis";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvUInt);
+    fields[2] = fieldCreate->createScalar(pvUInt);
+    fields[3] = fieldCreate->createScalar(pvUInt);
+    fields[4] = fieldCreate->createScalar(pvUInt);
+    fields[5] = fieldCreate->createScalar(pvInt);
+    fields[6] = fieldCreate->createScalar(pvInt);
+    fields[7] = fieldCreate->createScalar(pvInt);
+    fields[8] = fieldCreate->createScalar(pvInt);
+    fields[9] = fieldCreate->createScalar(pvUInt);
+    uintAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createULongAlarm() {
+    size_t numFields = 10;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "lowAlarmLimit";
+    names[2] = "lowWarningLimit";
+    names[3] = "highWarningLimit";
+    names[4] = "highAlarmLimit";
+    names[5] = "lowAlarmSeverity";
+    names[6] = "lowWarningSeverity";
+    names[7] = "highWarningSeverity";
+    names[8] = "highAlarmSeverity";
+    names[9] =  "hysteresis";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvULong);
+    fields[2] = fieldCreate->createScalar(pvULong);
+    fields[3] = fieldCreate->createScalar(pvULong);
+    fields[4] = fieldCreate->createScalar(pvULong);
+    fields[5] = fieldCreate->createScalar(pvInt);
+    fields[6] = fieldCreate->createScalar(pvInt);
+    fields[7] = fieldCreate->createScalar(pvInt);
+    fields[8] = fieldCreate->createScalar(pvInt);
+    fields[9] = fieldCreate->createScalar(pvULong);
+    ulongAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createFloatAlarm() {
+    size_t numFields = 10;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "lowAlarmLimit";
+    names[2] = "lowWarningLimit";
+    names[3] = "highWarningLimit";
+    names[4] = "highAlarmLimit";
+    names[5] = "lowAlarmSeverity";
+    names[6] = "lowWarningSeverity";
+    names[7] = "highWarningSeverity";
+    names[8] = "highAlarmSeverity";
+    names[9] =  "hysteresis";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvFloat);
+    fields[2] = fieldCreate->createScalar(pvFloat);
+    fields[3] = fieldCreate->createScalar(pvFloat);
+    fields[4] = fieldCreate->createScalar(pvFloat);
+    fields[5] = fieldCreate->createScalar(pvInt);
+    fields[6] = fieldCreate->createScalar(pvInt);
+    fields[7] = fieldCreate->createScalar(pvInt);
+    fields[8] = fieldCreate->createScalar(pvInt);
+    fields[9] = fieldCreate->createScalar(pvFloat);
+    floatAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createDoubleAlarm() {
+    size_t numFields = 10;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "lowAlarmLimit";
+    names[2] = "lowWarningLimit";
+    names[3] = "highWarningLimit";
+    names[4] = "highAlarmLimit";
+    names[5] = "lowAlarmSeverity";
+    names[6] = "lowWarningSeverity";
+    names[7] = "highWarningSeverity";
+    names[8] = "highAlarmSeverity";
+    names[9] =  "hysteresis";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalar(pvDouble);
+    fields[2] = fieldCreate->createScalar(pvDouble);
+    fields[3] = fieldCreate->createScalar(pvDouble);
+    fields[4] = fieldCreate->createScalar(pvDouble);
+    fields[5] = fieldCreate->createScalar(pvInt);
+    fields[6] = fieldCreate->createScalar(pvInt);
+    fields[7] = fieldCreate->createScalar(pvInt);
+    fields[8] = fieldCreate->createScalar(pvInt);
+    fields[9] = fieldCreate->createScalar(pvDouble);
+    doubleAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+void StandardField::createEnumeratedAlarm() {
+    size_t numFields = 3;
+    FieldConstPtrArray fields(numFields);
+    StringArray names(numFields);
+    names[0] = "active";
+    names[1] = "stateSeverity";
+    names[2] = "changeStateSeverity";
+    fields[0] = fieldCreate->createScalar(pvBoolean);
+    fields[1] = fieldCreate->createScalarArray(pvInt);
+    fields[2] = fieldCreate->createScalar(pvInt);
+    enumeratedAlarmField = fieldCreate->createStructure("valueAlarm_t",names,fields);
+}
+
+
 StructureConstPtr StandardField::scalar(
     ScalarType type,string  const &properties)
 {
@@ -263,21 +564,104 @@ StructureConstPtr StandardField::enumerated(string  const &properties)
     return createProperties("epics:nt/NTEnum:1.0",field,properties);
 }
 
-static StandardFieldPtr *stdFieldGbl;
-
-static epicsThreadOnceId stdFieldGblOnce = EPICS_THREAD_ONCE_INIT;
-
-void StandardField::once(void*)
+StructureConstPtr StandardField::alarm()
 {
-    stdFieldGbl = new StandardFieldPtr;
-    stdFieldGbl->reset(new StandardField);
+    return alarmField;
 }
 
-const StandardFieldPtr &StandardField::getStandardField()
+StructureConstPtr StandardField::timeStamp()
 {
-    epicsThreadOnce(&stdFieldGblOnce, &StandardField::once, 0);
+    return timeStampField;
+}
 
-    return *stdFieldGbl;
+StructureConstPtr StandardField::display()
+{
+    return displayField;
+}
+
+StructureConstPtr StandardField::control()
+{
+    return controlField;
+}
+
+StructureConstPtr StandardField::booleanAlarm()
+{
+    return booleanAlarmField;
+}
+
+StructureConstPtr StandardField::byteAlarm()
+{
+    return byteAlarmField;
+}
+
+StructureConstPtr StandardField::ubyteAlarm()
+{
+    return ubyteAlarmField;
+}
+
+StructureConstPtr StandardField::shortAlarm()
+{
+    return shortAlarmField;
+}
+
+StructureConstPtr StandardField::ushortAlarm()
+{
+    return ushortAlarmField;
+}
+
+StructureConstPtr StandardField::intAlarm()
+{
+    return intAlarmField;
+}
+
+StructureConstPtr StandardField::uintAlarm()
+{
+    return uintAlarmField;
+}
+
+StructureConstPtr StandardField::longAlarm()
+{
+    return longAlarmField;
+}
+
+StructureConstPtr StandardField::ulongAlarm()
+{
+    return ulongAlarmField;
+}
+
+StructureConstPtr StandardField::floatAlarm()
+{
+    return floatAlarmField;
+}
+
+StructureConstPtr StandardField::doubleAlarm()
+{
+    return doubleAlarmField;
+}
+
+StructureConstPtr StandardField::enumeratedAlarm()
+{
+    return enumeratedAlarmField;
+}
+
+StandardFieldPtr StandardField::getStandardField()
+{
+    static StandardFieldPtr standardFieldCreate;
+    static Mutex mutex;
+    Lock xx(mutex);
+
+    if(standardFieldCreate.get()==0)
+    {
+        standardFieldCreate = StandardFieldPtr(new StandardField());
+        standardFieldCreate->init();
+    }
+    return standardFieldCreate;
+}
+
+
+
+StandardFieldPtr getStandardField() {
+    return StandardField::getStandardField();
 }
 
 }}

src/factory/printer.cpp

@@ -3,521 +3,42 @@
  * Copyright information and license terms for this software can be
  * found in the file LICENSE that is included with the distribution
  */
-
-#include <stdio.h>
-#include <ctype.h>
-#if defined(__linux__) || defined(__APPLE__)
-#include <unistd.h>
-#define HAVE_ISATTY
-#endif
-
+ 
 #include <deque>
 
-#include <epicsTime.h>
-#include <epicsString.h>
-
 #define epicsExportSharedSymbols
-#include <pv/bitSet.h>
-#include <pv/pvData.h>
-#if EPICS_VERSION_INT>=VERSION_INT(3,15,0,1)
-#  include <pv/json.h>
-#endif
+#include <pv/pvIntrospect.h>
+
+using std::string;
 
 namespace epics { namespace pvData {
 
 namespace format
 {
-static int indent_index = std::ios_base::xalloc();
-
-long& indent_value(std::ios_base& ios)
-{
-    return ios.iword(indent_index);
-}
-
-std::ostream& operator<<(std::ostream& os, indent_level const& indent)
-{
-    indent_value(os) = indent.level;
-    return os;
-}
-
-std::ostream& operator<<(std::ostream& os, indent const&)
-{
-    long il = indent_value(os);
-    for(long i=0, spaces = il * 4; i<spaces; i++)
-        os.put(' ');
-    return os;
-}
-
-array_at_internal operator<<(std::ostream& str, array_at const& manip)
-{
-    return array_at_internal(manip.index, str);
-}
-}
-
-}} //epics::pvData
-namespace {
-using namespace epics::pvData;
-
-bool useEscapes(std::ostream& strm) {
-    FILE *fp = 0;
-    // TODO: a better way to do this...
-    if(&std::cout==&strm)
-        fp = stdout;
-    if(&std::cerr==&strm)
-        fp = stderr;
-    if(!fp) return false;
-#ifdef HAVE_ISATTY
-    // check $TERM as well?
-    return isatty(fileno(fp))==1;
-#else
-    // TODO: in theory windows 10 can be made to understand escapes as well
-    return false;
-#endif
-}
-
-
-void printAlarmTx(std::ostream& strm, const PVStructure& sub)
-{
-    PVScalar::const_shared_pointer pvSeverity(sub.getSubField<PVInt>("severity"));
-    PVScalar::const_shared_pointer pvStatus(sub.getSubField<PVInt>("status"));
-    PVString::const_shared_pointer pvMessage(sub.getSubField<PVString>("message"));
-
-    switch(pvSeverity ? pvSeverity->getAs<int32>() : 0) {
-    case 0: return; // nothing more to do here...
-    case 1: strm<<"MINOR "; break;
-    case 2: strm<<"MAJOR "; break;
-    case 3: strm<<"INVALID "; break;
-    case 4: strm<<"UNDEFINED "; break;
-    default: strm<<pvSeverity->getAs<int32>()<<' ';
-    }
-
-    switch(pvStatus ? pvStatus->getAs<int32>() : 0) {
-    case 0: break;
-    case 1: strm<<"DEVICE "; break;
-    case 2: strm<<"DRIVER "; break;
-    case 3: strm<<"RECORD "; break;
-    case 4: strm<<"DB "; break;
-    case 5: strm<<"CONF "; break;
-    case 6: strm<<"UNDEFINED "; break;
-    case 7: strm<<"CLIENT "; break;
-    default: strm<<pvStatus->getAs<int32>()<<' ';
-    }
-
-    if(pvMessage && !pvMessage->get().empty())
-        strm<<pvMessage->get()<<' ';
-}
-
-
-void printAlarmT(std::ostream& strm, const PVStructure& top)
-{
-    PVStructure::const_shared_pointer sub(top.getSubField<PVStructure>("alarm"));
-    if(sub)
-        printAlarmTx(strm, *sub);
-}
-
-void printTimeTx(std::ostream& strm, const PVStructure& tsubop)
-{
-    char timeText[32];
-    epicsTimeStamp epicsTS;
-
-    PVScalar::const_shared_pointer secf(tsubop.getSubField<PVScalar>("secondsPastEpoch")),
-                                   nsecf(tsubop.getSubField<PVScalar>("nanoseconds")),
-                                   tagf(tsubop.getSubField<PVScalar>("userTag"));
-
-    epicsTS.secPastEpoch = secf ? secf->getAs<int64>() : 0;
-    epicsTS.nsec = nsecf ? nsecf->getAs<int32>() : 0;
-
-    if(epicsTS.secPastEpoch > POSIX_TIME_AT_EPICS_EPOCH)
-        epicsTS.secPastEpoch -= POSIX_TIME_AT_EPICS_EPOCH;
-    else
-        epicsTS.secPastEpoch = 0;
-
-    epicsTimeToStrftime(timeText, sizeof(timeText), "%Y-%m-%d %H:%M:%S.%03f", &epicsTS);
-    strm <<std::setw(24) <<std::left <<timeText <<' ';
-    if (tagf) {
-        int64 tagv = tagf->getAs<int64>();
-        if(tagv)
-            strm << tagv << ' ';
-    }
-}
-
-
-void printTimeT(std::ostream& strm, const PVStructure& top)
-{
-    PVStructure::const_shared_pointer sub(top.getSubField<PVStructure>("timeStamp"));
-    if(sub)
-        printTimeTx(strm, *sub);
-}
-
-bool printEnumT(std::ostream& strm, const PVStructure& top, bool fromtop)
-{
-    PVStructure::const_shared_pointer value;
-    if(fromtop) {
-        value = top.getSubField<PVStructure>("value");
-    } else {
-        value = std::tr1::static_pointer_cast<const PVStructure>(top.shared_from_this());
-    }
-    PVScalar::const_shared_pointer idx(value->getSubField<PVScalar>("index"));
-    PVStringArray::const_shared_pointer choices(value->getSubField<PVStringArray>("choices"));
-    if(!idx || !choices) return false;
-
-    if(fromtop) {
-        strm<<format::indent();
-        printTimeT(strm, top);
-        printAlarmT(strm, top);
-    }
-
-    PVStringArray::const_svector ch(choices->view());
-    uint32 I = idx->getAs<uint32>();
-    strm<<'('<<I<<')';
-    if(I>=ch.size()) {
-        strm<<" <undefined>";
-    } else {
-        strm<<' '<<escape(ch[I]);
-    }
-    return true;
-}
-
-void csvEscape(std::string& S)
-{
-    // concise, not particularly efficient...
-    std::string temp(escape(S).style(escape::CSV).str());
-    if(S.find_first_of(" ,\\")!=S.npos) {// only quote if necessary (stupid Excel)
-        std::string temp2;
-        temp2.reserve(temp.size()+2);
-        temp2.push_back('\"');
-        temp2 += temp;
-        temp2.push_back('\"');
-        temp2.swap(temp);
-    }
-    S = temp;
-}
-
-bool printTable(std::ostream& strm, const PVStructure& top)
-{
-    PVStructure::const_shared_pointer cf(top.getSubField<PVStructure>("value"));
-    if(!cf) return false;
+    static int indent_index = std::ios_base::xalloc();
 
+    long& indent_value(std::ios_base& ios)
     {
-        const FieldConstPtrArray& fields = cf->getStructure()->getFields();
-        if(fields.empty()) return false;
-        for(size_t i=0, N=fields.size(); i<N; i++) {
-            if(fields[i]->getType()!=scalarArray)
-                return false; // cowardly refusing to handle anything else...
-        }
+      return ios.iword(indent_index);
     }
 
-    // maybe output a line with meta-data
-    {
-        bool havets = !!top.getSubField("timeStamp");
-        bool haveal = !!top.getSubField("alarm");
-        if(havets || haveal)
-            strm<<format::indent();
-        if(havets) {
-            printTimeT(strm, top);
-            strm<<' ';
-        }
-        if(haveal) {
-            printAlarmT(strm, top);
-            strm<<' ';
-        }
-        strm<<'\n';
-    }
+    std::ostream& operator<<(std::ostream& os, indent_level const& indent)
+	{
+		indent_value(os) = indent.level;
+		return os;
+	}
 
-    PVStringArray::svector labels;
-    {
-        PVStringArray::const_shared_pointer lf(top.getSubField<PVStringArray>("labels"));
-        if(lf) {
-            PVStringArray::const_svector L(lf->view());
-            labels = thaw(L);
-        }
-    }
+	std::ostream& operator<<(std::ostream& os, indent const&)
+	{
+		long il = indent_value(os);
+		std::size_t spaces = static_cast<std::size_t>(il) * 4;
+		return os << string(spaces, ' ');
+	}
 
-    const PVFieldPtrArray& columns = cf->getPVFields();
-    std::vector<shared_vector<std::string> > coldat(columns.size());
+	array_at_internal operator<<(std::ostream& str, array_at const& manip)
+	{
+		return array_at_internal(manip.index, str);
+	}
+};
 
-    std::vector<size_t> widths(columns.size());
-    labels.reserve(columns.size());
-
-    size_t nrows = size_t(-1);
-
-    for(size_t i=0, N=columns.size(); i<N; i++) {
-        if(i>=labels.size()) {
-            labels.push_back(cf->getStructure()->getFieldName(i));
-        } else {
-            csvEscape(labels[i]);
-        }
-        widths[i] = labels[i].size();
-
-        {
-            shared_vector<const std::string> ro;
-            static_cast<const PVScalarArray*>(columns[i].get())->getAs(ro);
-            coldat[i] = thaw(ro);
-        }
-
-        // truncate if some columns are longer than others
-        nrows = std::min(nrows, coldat[i].size());
-
-        for(size_t j=0, M=coldat[i].size(); j<M; j++) {
-            csvEscape(coldat[i][j]);
-            widths[i] = std::max(widths[i], coldat[i][j].size());
-        }
-    }
-
-    // output header line
-    strm<<format::indent();
-    for(size_t c=0, N=coldat.size(); c<N; c++) {
-        strm<<std::setw(widths[c])<<std::right<<labels[c];
-        if(c+1!=N) {
-            strm<<' ';
-        }
-    }
-    strm<<'\n';
-
-    for(size_t r=0; r<nrows; r++) {
-        strm<<format::indent();
-        for(size_t c=0, N=coldat.size(); c<N; c++) {
-            strm<<std::setw(widths[c])<<std::right<<coldat[c][r];
-            if(c+1!=N)
-                strm<<' ';
-        }
-        strm<<'\n';
-    }
-
-    return true;
-}
-
-void expandBS(const PVStructure& top, BitSet& mask, bool parents) {
-    if(mask.get(0)) { // special handling because getSubField(0) not allowed
-        // wildcard
-        for(size_t idx=1, N=top.getNumberFields(); idx<N; idx++) {
-            mask.set(idx);
-        }
-
-    } else {
-        for(int32 idx = mask.nextSetBit(0), N=top.getNumberFields(); idx>=0 && idx<N; idx=mask.nextSetBit(idx+1)) {
-            PVField::const_shared_pointer fld = top.getSubFieldT(idx);
-
-            // look forward and mark all children
-            for(size_t i=idx+1, N=fld->getNextFieldOffset(); i<N; i++)
-                mask.set(i);
-
-            if(parents) {
-                // look back and mark all parents
-                // we've already stepped past all parents so siblings will not be automatically marked
-                for(const PVStructure *parent = fld->getParent(); parent; parent = parent->getParent()) {
-                    mask.set(parent->getFieldOffset());
-                }
-            }
-        }
-    }
-}
-
-}
-namespace epics { namespace pvData {
-
-void printRaw(std::ostream& strm, const PVStructure::Formatter& format, const PVStructure& cur)
-{
-    typedef std::deque<std::pair<const PVField*, size_t> > todo_t;
-    todo_t todo;
-    BitSet show, highlight;
-
-    const long orig_indent = format::indent_value(strm);
-
-    {
-        if(format.xshow)
-            show = *format.xshow;
-        else
-            show.set(0);
-
-        if(format.xhighlight)
-            highlight = *format.xhighlight;
-
-        expandBS(format.xtop, show, true);
-        expandBS(format.xtop, highlight, false);
-        highlight &= show; // can't highlight hidden fields (paranoia)
-    }
-
-    if(!show.get(0)) return; // nothing to do here...
-
-    todo.push_front(std::make_pair(&format.xtop, orig_indent));
-
-    while(!todo.empty()) {
-        todo_t::value_type cur(todo.front());
-        todo.pop_front();
-
-        format::indent_value(strm) = cur.second;
-
-        bool hl = highlight.get(cur.first->getFieldOffset()) && format.xmode==PVStructure::Formatter::ANSI;
-        if(hl)
-            strm<<"\x1b[1m"; // Bold
-
-        switch(cur.first->getField()->getType()) {
-        case structure: {
-            const PVStructure* str = static_cast<const PVStructure*>(cur.first);
-
-            const PVFieldPtrArray& flds = str->getPVFields();
-
-            for(PVFieldPtrArray::const_reverse_iterator it(flds.rbegin()), end(flds.rend()); it!=end; ++it) {
-                const PVField *fld = (*it).get();
-                if(!show.get(fld->getFieldOffset())) continue;
-
-                todo.push_front(std::make_pair(fld, cur.second+1));
-            }
-
-            std::string id(cur.first->getField()->getID());
-
-            strm<<format::indent()<<id<<' '<<cur.first->getFieldName();
-            if(id=="alarm_t") {
-                strm.put(' ');
-                printAlarmTx(strm, *str);
-            } else if(id=="time_t") {
-                strm.put(' ');
-                printTimeTx(strm, *str);
-            } else if(id=="enum_t") {
-                strm.put(' ');
-                printEnumT(strm, *str, false);
-            }
-            strm.put('\n');
-        }
-            break;
-        case scalar:
-        case scalarArray:
-            strm<<format::indent()<<cur.first->getField()->getID()<<' '<<cur.first->getFieldName()
-                <<' '<<*cur.first
-                <<'\n';
-            break;
-        case structureArray:
-        case union_:
-        case unionArray:
-            strm<<*cur.first;
-            break;
-        }
-
-        if(hl)
-            strm<<"\x1b[0m"; // reset
-    }
-
-    format::indent_value(strm) = orig_indent;
-}
-
-std::ostream& operator<<(std::ostream& strm, const PVStructure::Formatter& format)
-{
-    if(format.xfmt==PVStructure::Formatter::JSON) {
-#if EPICS_VERSION_INT>=VERSION_INT(3,15,0,1)
-        JSONPrintOptions opts;
-        opts.multiLine = false;
-        printJSON(strm, format.xtop, format.xshow ? *format.xshow : BitSet().set(0), opts);
-        strm<<'\n';
-        return strm;
-#else
-        // fall through to Raw
-#endif
-
-    } else if(format.xfmt==PVStructure::Formatter::NT) {
-        std::string id(format.xtop.getStructure()->getID()),
-                    idprefix(id.substr(0, id.find_first_of('.')));
-
-        // NTTable
-        if(idprefix=="epics:nt/NTTable:1") {
-            if(printTable(strm, format.xtop))
-                return strm;
-        } else {
-            //NTScalar, NTScalarArray, NTEnum, or anything with '.value'
-
-            PVField::const_shared_pointer value(format.xtop.getSubField("value"));
-            if(value) {
-                switch(value->getField()->getType()) {
-                case scalar:
-                    strm<<format::indent();
-                    printTimeT(strm, format.xtop);
-                    strm<<std::setprecision(6)<<*static_cast<const PVScalar*>(value.get())<<' ';
-                    printAlarmT(strm, format.xtop);
-                    strm<<'\n';
-                    return strm;
-
-                case scalarArray:
-                    strm<<format::indent();
-                    printTimeT(strm, format.xtop);
-                    printAlarmT(strm, format.xtop);
-                    strm<<std::setprecision(6)<<*static_cast<const PVScalarArray*>(value.get())<<'\n';
-                    return strm;
-
-                case structure:
-                    if(printEnumT(strm, format.xtop, true)) {
-                        strm<<'\n';
-                        return strm;
-                    }
-                    break;
-                default:
-                    break;
-                }
-            }
-        }
-    }
-    // fall through unhandled as Raw
-
-    PVStructure::Formatter format2(format);
-
-    if(format2.xmode==PVStructure::Formatter::Auto)
-        format2.xmode = useEscapes(strm) ? PVStructure::Formatter::ANSI : PVStructure::Formatter::Plain;
-
-    printRaw(strm, format2, format.xtop);
-
-    return strm;
-}
-
-static char hexdigit(char c) {
-    c &= 0xf;
-    if(c<9)
-        return '0'+c;
-    else
-        return 'A'+c-10;
-}
-
-escape::~escape() {}
-
-std::string escape::str() const
-{
-    std::ostringstream strm;
-    strm<<(*this);
-    return strm.str();
-}
-
-epicsShareFunc
-std::ostream& operator<<(std::ostream& strm, const escape& Q)
-{
-    for(size_t pos = 0, len = Q.orig.size(); pos < len; pos++) {
-        const char C = Q.orig[pos];
-        char quote = '\\', next;
-        // compare me with epicsStrnEscapedFromRaw()
-        switch(C) {
-        case '\a': next = 'a'; break;
-        case '\b': next = 'b'; break;
-        case '\f': next = 'f'; break;
-        case '\n': next = 'n'; break;
-        case '\r': next = 'r'; break;
-        case '\t': next = 't'; break;
-        case '\v': next = 'v'; break;
-        case '\\': next = '\\'; break;
-        case '\'': next = '\''; break;
-        case '\"': next = '\"'; if(Q.S==escape::CSV) quote = '"'; break;
-        default:
-            if(!isprint(C)) {
-                // print three charator escape
-                strm<<"\\x"<<hexdigit(C>>4)<<hexdigit(C);
-            } else {
-                // literal
-                strm.put(C);
-            }
-            continue;
-        }
-        // print two charactor escape
-        strm.put(quote);
-        strm.put(next);
-    }
-
-    return strm;
-}
-
-}} //epics::pvData
+}}

src/json/Makefile

@@ -1,10 +0,0 @@
-# This is a Makefile fragment, see ../Makefile
-
-SRC_DIRS += $(PVDATA_SRC)/json
-
-INC += pv/json.h
-
-LIBSRCS += parsehelper.cpp
-LIBSRCS += parseany.cpp
-LIBSRCS += parseinto.cpp
-LIBSRCS += print.cpp

src/json/parseany.cpp

@@ -1,284 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-#include <sstream>
-
-#define epicsExportSharedSymbols
-#include <pv/pvdVersion.h>
-#include <pv/pvData.h>
-#include <pv/valueBuilder.h>
-
-#if EPICS_VERSION_INT>=VERSION_INT(3,15,0,1)
-
-#include "pv/json.h"
-
-namespace pvd = epics::pvData;
-using pvd::yajl::integer_arg;
-using pvd::yajl::size_arg;
-
-namespace {
-
-struct context {
-
-    unsigned depth;
-
-    enum state_t {
-        Undefined,
-        Key,
-        Array,
-    } state;
-
-    pvd::shared_vector<void> arr;
-
-    pvd::ValueBuilder root,
-                     *cur;
-
-    std::string msg,
-                key;
-
-    context() :depth(0u), state(Undefined), cur(&root) {}
-};
-
-#define TRY context *self = (context*)ctx; try
-
-#define CATCH() catch(std::exception& e) { self->msg = e.what(); return 0; }
-
-int jtree_null(void * ctx)
-{
-    TRY {
-        self->msg = "NULL value not permitted";
-        return 0;
-    }CATCH()
-}
-
-int jtree_boolean(void * ctx, int boolVal)
-{
-    TRY {
-        if(self->depth==0) throw std::runtime_error("Bare value not supported");
-        switch(self->state) {
-        case context::Key:
-            self->cur = &self->cur->add<pvd::pvBoolean>(self->key, boolVal);
-            self->key.clear();
-            self->state = context::Undefined;
-            break;
-        case context::Array:
-        {
-            if(self->arr.size()>0 && self->arr.original_type()!=pvd::pvBoolean)
-                throw std::runtime_error("Mixed type array not supported");
-            pvd::shared_vector<pvd::boolean> arr(pvd::static_shared_vector_cast<pvd::boolean>(self->arr));
-            arr.push_back(boolVal);
-            self->arr = pvd::static_shared_vector_cast<void>(arr);
-            break;
-        }
-        default:
-            throw std::logic_error("boolean in bad state");
-        }
-        return 1;
-    }CATCH()
-}
-
-int jtree_integer(void * ctx, integer_arg integerVal)
-{
-    TRY {
-        if(self->depth==0) throw std::runtime_error("Bare value not supported");
-        switch(self->state) {
-        case context::Key:
-            self->cur = &self->cur->add<pvd::pvLong>(self->key, integerVal);
-            self->key.clear();
-            self->state = context::Undefined;
-            break;
-        case context::Array:
-        {
-            if(self->arr.size()>0 && self->arr.original_type()!=pvd::pvLong)
-                throw std::runtime_error("Mixed type array not supported");
-            pvd::shared_vector<pvd::int64> arr(pvd::static_shared_vector_cast<pvd::int64>(self->arr));
-            arr.push_back(integerVal);
-            self->arr = pvd::static_shared_vector_cast<void>(arr);
-            break;
-        }
-        default:
-            throw std::logic_error("int64 in bad state");
-        }
-        return 1;
-    }CATCH()
-}
-
-int jtree_double(void * ctx, double doubleVal)
-{
-    TRY {
-        if(self->depth==0) throw std::runtime_error("Bare value not supported");
-        switch(self->state) {
-        case context::Key:
-            self->cur = &self->cur->add<pvd::pvDouble>(self->key, doubleVal);
-            self->key.clear();
-            self->state = context::Undefined;
-            break;
-        case context::Array:
-        {
-            if(self->arr.size()>0 && self->arr.original_type()!=pvd::pvDouble)
-                throw std::runtime_error("Mixed type array not supported");
-            pvd::shared_vector<double> arr(pvd::static_shared_vector_cast<double>(self->arr));
-            arr.push_back(doubleVal);
-            self->arr = pvd::static_shared_vector_cast<void>(arr);
-            break;
-        }
-        default:
-            throw std::logic_error("double in bad state");
-        }
-        return 1;
-    }CATCH()
-}
-
-int jtree_string(void * ctx, const unsigned char * stringVal,
-                    size_arg stringLen)
-{
-    TRY {
-        if(self->depth==0) throw std::runtime_error("Bare value not supported");
-        std::string sval((const char*)stringVal, stringLen);
-        switch(self->state) {
-        case context::Key:
-            self->cur = &self->cur->add<pvd::pvString>(self->key, sval);
-            self->key.clear();
-            self->state = context::Undefined;
-            break;
-        case context::Array:
-        {
-            if(self->arr.size()>0 && self->arr.original_type()!=pvd::pvString)
-                throw std::runtime_error("Mixed type array not supported");
-            pvd::shared_vector<std::string> arr(pvd::static_shared_vector_cast<std::string>(self->arr));
-            arr.push_back(sval);
-            self->arr = pvd::static_shared_vector_cast<void>(arr);
-            break;
-        }
-        default:
-            throw std::logic_error("double in bad state");
-        }
-        return 1;
-    }CATCH()
-}
-
-int jtree_start_map(void * ctx)
-{
-    TRY {
-        if(self->depth>0) {
-            if(self->key.empty())
-                throw std::logic_error("anonymous dict not top level?");
-            self->cur = &self->cur->addNested(self->key);
-            self->key.clear();
-        }
-        self->depth++;
-        return 1;
-    }CATCH()
-}
-
-int jtree_map_key(void * ctx, const unsigned char * key,
-                     size_arg stringLen)
-{
-    TRY {
-        if(!self->key.empty())
-            throw std::logic_error("double key?");
-        if(stringLen==0)
-            throw std::runtime_error("empty key not allowed");
-        self->key = std::string((const char*)key, stringLen);
-        self->state = context::Key;
-        return 1;
-    }CATCH()
-}
-
-int jtree_end_map(void * ctx)
-{
-    TRY {
-        if(self->depth>1)
-            self->cur = &self->cur->endNested();
-        else if(self->depth==0)
-            throw std::logic_error("Unbalenced dict");
-        self->depth--;
-        return 1;
-    }CATCH()
-}
-
-int jtree_start_array(void * ctx)
-{
-    TRY {
-        if(self->depth==0) throw std::runtime_error("Bare array not supported");
-        if(self->state!=context::Key)
-            throw std::logic_error("bare array not supported");
-        self->state = context::Array;
-        return 1;
-    }CATCH()
-}
-int jtree_end_array(void * ctx)
-{
-    TRY {
-        if(self->state!=context::Array)
-            throw std::logic_error("Bad array parse");
-        self->cur = &self->cur->add(self->key, pvd::freeze(self->arr));
-        self->key.clear();
-        self->state = context::Undefined;
-        return 1;
-    }CATCH()
-}
-
-
-yajl_callbacks jtree_cbs = {
-    &jtree_null,
-    &jtree_boolean,
-    &jtree_integer,
-    &jtree_double,
-    NULL, // number
-    &jtree_string,
-    &jtree_start_map,
-    &jtree_map_key,
-    &jtree_end_map,
-    &jtree_start_array,
-    &jtree_end_array,
-};
-
-struct handler {
-    yajl_handle handle;
-    handler(yajl_handle handle) :handle(handle)
-    {
-        if(!handle)
-            throw std::runtime_error("Failed to allocate yajl handle");
-    }
-    ~handler() {
-        yajl_free(handle);
-    }
-    operator yajl_handle() { return handle; }
-};
-
-} // namespace
-
-namespace epics{namespace pvData{
-
-epics::pvData::PVStructure::shared_pointer
-parseJSON(std::istream& strm)
-{
-#ifndef EPICS_YAJL_VERSION
-    yajl_parser_config conf;
-    memset(&conf, 0, sizeof(conf));
-    conf.allowComments = 1;
-    conf.checkUTF8 = 1;
-#endif
-
-    context ctxt;
-
-#ifndef EPICS_YAJL_VERSION
-    handler handle(yajl_alloc(&jtree_cbs, &conf, NULL, &ctxt));
-#else
-    handler handle(yajl_alloc(&jtree_cbs, NULL, &ctxt));
-
-    yajl_config(handle, yajl_allow_comments, 1);
-#endif
-
-    if(!yajl_parse_helper(strm, handle))
-        throw std::runtime_error(ctxt.msg);
-
-    return ctxt.cur->buildPVStructure();
-}
-
-}} // namespace epics::pvData
-
-#endif // EPICS_VERSION_INT

src/json/parsehelper.cpp

@@ -1,122 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-#include <stdexcept>
-#include <sstream>
-
-#define epicsExportSharedSymbols
-#include <pv/pvdVersion.h>
-
-#if EPICS_VERSION_INT>=VERSION_INT(3,15,0,1)
-
-#include "pv/json.h"
-
-namespace {
-
-void check_trailing(const std::string& line)
-{
-    size_t idx = line.find_first_not_of(" \t\n\r");
-    if(idx==line.npos) return;
-    // TODO: detect the end of potentially multi-line comments...
-    // for now trailing comments not allowed
-    throw std::runtime_error("Trailing junk");
-}
-
-} // namespace
-
-namespace epics{namespace pvData{
-
-bool yajl_parse_helper(std::istream& src,
-                       yajl_handle handle)
-{
-    unsigned linenum=0;
-#ifndef EPICS_YAJL_VERSION
-    bool done = false;
-#endif
-
-    std::string line;
-    while(std::getline(src, line)) {
-        linenum++;
-
-#ifndef EPICS_YAJL_VERSION
-        if(done) {
-            check_trailing(line);
-            continue;
-        }
-#endif
-
-        yajl_status sts = yajl_parse(handle, (const unsigned char*)line.c_str(), line.size());
-
-        switch(sts) {
-        case yajl_status_ok: {
-            size_t consumed = yajl_get_bytes_consumed(handle);
-
-            if(consumed<line.size()) {
-                check_trailing(line.substr(consumed));
-            }
-
-#ifndef EPICS_YAJL_VERSION
-            done = true;
-#endif
-            break;
-        }
-        case yajl_status_client_canceled:
-            return false;
-#ifndef EPICS_YAJL_VERSION
-        case yajl_status_insufficient_data:
-            // continue with next line
-            break;
-#endif
-        case yajl_status_error:
-        {
-            std::ostringstream msg;
-            unsigned char *raw = yajl_get_error(handle, 1, (const unsigned char*)line.c_str(), line.size());
-            if(!raw) {
-                msg<<"Unknown error on line "<<linenum;
-            } else {
-                try {
-                    msg<<"Error on line "<<linenum<<" : "<<(const char*)raw;
-                }catch(...){
-                    yajl_free_error(handle, raw);
-                    throw;
-                }
-                yajl_free_error(handle, raw);
-            }
-            throw std::runtime_error(msg.str());
-        }
-        }
-    }
-
-    if(!src.eof() || src.bad()) {
-        std::ostringstream msg;
-        msg<<"I/O error after line "<<linenum;
-        throw std::runtime_error(msg.str());
-
-#ifndef EPICS_YAJL_VERSION
-    } else if(!done) {
-        switch(yajl_parse_complete(handle)) {
-#else
-    } else {
-        switch(yajl_complete_parse(handle)) {
-#endif
-        case yajl_status_ok:
-            break;
-        case yajl_status_client_canceled:
-            return false;
-#ifndef EPICS_YAJL_VERSION
-        case yajl_status_insufficient_data:
-            throw std::runtime_error("unexpected end of input");
-#endif
-        case yajl_status_error:
-            throw std::runtime_error("Error while completing parsing");
-        }
-    }
-
-    return true;
-}
-
-}} // namespace epics::pvData
-
-#endif // EPICS_VERSION_INT

src/json/parseinto.cpp

@@ -1,352 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-#include <vector>
-#include <sstream>
-
-#define epicsExportSharedSymbols
-#include <pv/pvdVersion.h>
-#include <pv/pvData.h>
-#include <pv/valueBuilder.h>
-#include <pv/bitSet.h>
-
-#if EPICS_VERSION_INT>=VERSION_INT(3,15,0,1)
-
-#include "pv/json.h"
-
-namespace pvd = epics::pvData;
-using pvd::yajl::integer_arg;
-using pvd::yajl::size_arg;
-
-namespace {
-struct context {
-
-    std::string msg;
-
-    struct frame {
-        pvd::PVFieldPtr fld;
-        pvd::BitSet *assigned;
-        frame(const pvd::PVFieldPtr& fld, pvd::BitSet *assigned)
-            :fld(fld), assigned(assigned)
-        {}
-    };
-
-    typedef std::vector<frame> stack_t;
-    stack_t stack;
-
-    context(const pvd::PVFieldPtr& root, pvd::BitSet *assigned)
-    {
-        stack.push_back(frame(root, assigned));
-    }
-};
-
-#define TRY context *self = (context*)ctx; assert(!self->stack.empty()); try
-
-#define CATCH() catch(std::exception& e) { if(self->msg.empty()) self->msg = e.what(); return 0; }
-
-int jtree_null(void * ctx)
-{
-    TRY {
-        self->msg = "NULL value not permitted";
-        return 0;
-    }CATCH()
-}
-
-template<typename PVScalarT, typename PVArrayT>
-void valueAssign(context *self, typename PVScalarT::value_type val)
-{
-    assert(!self->stack.empty());
-    context::frame& back = self->stack.back();
-    pvd::Type type(back.fld->getField()->getType());
-    if(type==pvd::scalar) {
-        pvd::PVScalar* fld(static_cast<pvd::PVScalar*>(back.fld.get()));
-
-        fld->putFrom(val);
-        if(back.assigned)
-            back.assigned->set(fld->getFieldOffset());
-        self->stack.pop_back();
-        // structure at the top of the stack
-
-    } else if(type==pvd::scalarArray) {
-        pvd::PVScalarArray *fld(static_cast<pvd::PVScalarArray*>(back.fld.get()));
-
-        pvd::shared_vector<const void> carr;
-        fld->getAs(carr);
-
-        switch(carr.original_type())
-        {
-#define CASE_STRING
-#define CASE_REAL_INT64
-#define CASE(BASETYPE, PVATYPE, DBFTYPE, PVACODE) case epics::pvData::pv##PVACODE: { \
-            pvd::shared_vector<const PVATYPE> arr(pvd::static_shared_vector_cast<const PVATYPE>(carr)); \
-            pvd::shared_vector<PVATYPE> tarr(pvd::thaw(arr)); \
-            tarr.push_back(pvd::castUnsafe<PVATYPE>(val)); \
-            carr = pvd::static_shared_vector_cast<const void>(pvd::freeze(tarr)); \
-            } break;
-#include <pv/typemap.h>
-#undef CASE
-#undef CASE_REAL_INT64
-#undef CASE_STRING
-        }
-
-        fld->putFrom(carr);
-
-        // leave array field at top of stack
-
-    } else if(type==pvd::union_) {
-        pvd::PVUnion* fld(static_cast<pvd::PVUnion*>(back.fld.get()));
-        pvd::UnionConstPtr utype(fld->getUnion());
-
-        if(utype->isVariant()) {
-            typename PVScalarT::shared_pointer elem(pvd::getPVDataCreate()->createPVScalar<PVScalarT>());
-
-            elem->put(val);
-
-            fld->set(elem);
-
-        } else {
-            // attempt automagic assignment
-
-            const pvd::StringArray& names = utype->getFieldNames();
-            const pvd::FieldConstPtrArray types = utype->getFields();
-            assert(names.size()==types.size());
-
-            bool assigned = false;
-            for(size_t i=0, N=names.size(); i<N; i++) {
-                if(types[i]->getType()!=pvd::scalar) continue;
-
-                pvd::PVScalarPtr ufld(fld->select<pvd::PVScalar>(i));
-                try{
-                    ufld->putFrom(val);
-                    assigned = true;
-                }catch(std::runtime_error&){
-                    if(i==N-1)
-                        throw;
-                    continue;
-                }
-
-                break;
-            }
-            if(!assigned)
-                throw std::runtime_error("Unable to select union member");
-        }
-        if(back.assigned)
-            back.assigned->set(fld->getFieldOffset());
-        self->stack.pop_back();
-        // structure back at the top of the stack
-
-    } else {
-        throw std::invalid_argument("Can't assign value");
-    }
-}
-
-int jtree_boolean(void * ctx, int boolVal)
-{
-    TRY {
-        valueAssign<pvd::PVBoolean, pvd::PVBooleanArray>(self, !!boolVal);
-        return 1;
-    }CATCH()
-}
-
-int jtree_integer(void * ctx, integer_arg integerVal)
-{
-    TRY {
-        valueAssign<pvd::PVLong, pvd::PVLongArray>(self, integerVal);
-        return 1;
-    }CATCH()
-}
-
-int jtree_double(void * ctx, double doubleVal)
-{
-    TRY {
-        valueAssign<pvd::PVDouble, pvd::PVDoubleArray>(self, doubleVal);
-        return 1;
-    }CATCH()
-}
-
-int jtree_string(void * ctx, const unsigned char * stringVal,
-                    size_arg stringLen)
-{
-    TRY {
-        std::string val((const char*)stringVal, stringLen);
-        valueAssign<pvd::PVString, pvd::PVStringArray>(self, val);
-        return 1;
-    }CATCH()
-}
-
-int jtree_start_map(void * ctx)
-{
-    TRY {
-        assert(!self->stack.empty());
-
-        context::frame& back = self->stack.back();
-        pvd::Type type = back.fld->getField()->getType();
-        if(type==pvd::structure) {
-            // will fill in
-        } else if(type==pvd::structureArray) {
-            // starting new element in structure array
-            pvd::PVStructureArray* sarr(static_cast<pvd::PVStructureArray*>(back.fld.get()));
-
-            pvd::PVStructurePtr elem(pvd::getPVDataCreate()->createPVStructure(sarr->getStructureArray()->getStructure()));
-
-            self->stack.push_back(context::frame(elem, 0));
-        } else {
-            throw std::runtime_error("Can't map (sub)structure");
-        }
-
-        assert(self->stack.back().fld->getField()->getType()==pvd::structure);
-        return 1;
-    }CATCH()
-}
-
-int jtree_map_key(void * ctx, const unsigned char * key,
-                     size_arg stringLen)
-{
-    TRY {
-        assert(!self->stack.empty());
-        std::string name((const char*)key, stringLen);
-
-        // start_map() ensures we have a structure at the top of the stack
-        pvd::PVStructure *fld = static_cast<pvd::PVStructure*>(self->stack.back().fld.get());
-
-        try {
-            self->stack.push_back(context::frame(fld->getSubFieldT(name), self->stack.back().assigned));
-        }catch(std::runtime_error& e){
-            std::ostringstream strm;
-            strm<<"At "<<fld->getFullName()<<" : "<<e.what()<<"\n";
-            throw std::runtime_error(strm.str());
-        }
-
-        return 1;
-    }CATCH()
-}
-
-int jtree_end_map(void * ctx)
-{
-    TRY {
-        assert(!self->stack.empty());
-        assert(self->stack.back().fld->getField()->getType()==pvd::structure);
-
-        context::frame elem(self->stack.back());
-        self->stack.pop_back();
-
-        if(!self->stack.empty() && self->stack.back().fld->getField()->getType()==pvd::structureArray) {
-            // append element to struct array
-            pvd::PVStructureArray *sarr = static_cast<pvd::PVStructureArray*>(self->stack.back().fld.get());
-
-            pvd::PVStructureArray::const_svector cval;
-            sarr->swap(cval);
-
-            pvd::PVStructureArray::svector val(pvd::thaw(cval));
-
-            val.push_back(std::tr1::static_pointer_cast<pvd::PVStructure>(elem.fld));
-
-            sarr->replace(pvd::freeze(val));
-        }
-
-        return 1;
-    }CATCH()
-}
-
-int jtree_start_array(void * ctx)
-{
-    TRY {
-        assert(!self->stack.empty());
-        pvd::PVFieldPtr& back(self->stack.back().fld);
-        pvd::Type type = back->getField()->getType();
-        if(type!=pvd::structureArray && type!=pvd::scalarArray)
-            throw std::runtime_error("Can't assign array");
-
-        return 1;
-    }CATCH()
-}
-int jtree_end_array(void * ctx)
-{
-    TRY {
-        assert(!self->stack.empty());
-
-        if(self->stack.back().assigned)
-            self->stack.back().assigned->set(self->stack.back().fld->getFieldOffset());
-        self->stack.pop_back();
-        return 1;
-    }CATCH()
-}
-
-
-yajl_callbacks jtree_cbs = {
-    &jtree_null,
-    &jtree_boolean,
-    &jtree_integer,
-    &jtree_double,
-    NULL, // number
-    &jtree_string,
-    &jtree_start_map,
-    &jtree_map_key,
-    &jtree_end_map,
-    &jtree_start_array,
-    &jtree_end_array,
-};
-
-struct handler {
-    yajl_handle handle;
-    handler(yajl_handle handle) :handle(handle)
-    {
-        if(!handle)
-            throw std::runtime_error("Failed to allocate yajl handle");
-    }
-    ~handler() {
-        yajl_free(handle);
-    }
-    operator yajl_handle() { return handle; }
-};
-
-struct noop {
-    void operator()(pvd::PVField*) {}
-};
-
-} // namespace
-
-namespace epics{namespace pvData{
-
-epicsShareFunc
-void parseJSON(std::istream& strm,
-               PVField& dest,
-               BitSet *assigned)
-{
-#ifndef EPICS_YAJL_VERSION
-    yajl_parser_config conf;
-    memset(&conf, 0, sizeof(conf));
-    conf.allowComments = 1;
-    conf.checkUTF8 = 1;
-#endif
-
-    // we won't create refs to 'dest' which presist beyond this call.
-    // however, it is convienent to treat 'dest' in the same manner as
-    // any union/structureArray memebers it may contain.
-    PVFieldPtr fakedest(&dest, noop());
-
-    context ctxt(fakedest, assigned);
-
-#ifndef EPICS_YAJL_VERSION
-    handler handle(yajl_alloc(&jtree_cbs, &conf, NULL, &ctxt));
-#else
-    handler handle(yajl_alloc(&jtree_cbs, NULL, &ctxt));
-
-    yajl_config(handle, yajl_allow_comments, 1);
-#endif
-
-
-    if(!yajl_parse_helper(strm, handle))
-        throw std::runtime_error(ctxt.msg);
-
-    if(!ctxt.stack.empty())
-        throw std::logic_error("field stack not empty");
-    assert(fakedest.use_count()==1);
-}
-
-}} // namespace epics::pvData
-
-#endif // EPICS_VERSION_INT
-

src/json/print.cpp

@@ -1,236 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-#include <vector>
-#include <sstream>
-
-#define epicsExportSharedSymbols
-#include <pv/pvdVersion.h>
-#include <pv/pvData.h>
-#include <pv/valueBuilder.h>
-#include <pv/bitSet.h>
-
-#if EPICS_VERSION_INT>=VERSION_INT(3,15,0,1)
-
-#include "pv/json.h"
-
-namespace pvd = epics::pvData;
-
-namespace {
-
-struct args {
-    std::ostream& strm;
-    const pvd::JSONPrintOptions& opts;
-
-    unsigned indent;
-
-    args(std::ostream& strm,
-         const pvd::JSONPrintOptions& opts)
-        :strm(strm)
-        ,opts(opts)
-        ,indent(opts.indent)
-    {}
-
-    void doIntent() {
-        if(!opts.multiLine) return;
-        strm.put('\n');
-        unsigned i=indent;
-        while(i--) strm.put(' ');
-    }
-};
-
-void show_field(args& A, const pvd::PVField* fld, const pvd::BitSet *mask);
-
-void show_struct(args& A, const pvd::PVStructure* fld, const pvd::BitSet *mask)
-{
-    const pvd::StructureConstPtr& type = fld->getStructure();
-    const pvd::PVFieldPtrArray& children = fld->getPVFields();
-
-    const pvd::StringArray& names = type->getFieldNames();
-
-    A.strm.put('{');
-    A.indent++;
-
-    bool first = true;
-    for(size_t i=0, N=names.size(); i<N; i++)
-    {
-        if(mask && !mask->get(children[i]->getFieldOffset())) continue;
-
-        if(first)
-            first = false;
-        else
-            A.strm.put(',');
-        A.doIntent();
-        A.strm<<'\"'<<names[i]<<"\": ";
-        show_field(A, children[i].get(), mask);
-    }
-
-    A.indent--;
-    A.doIntent();
-    A.strm.put('}');
-}
-
-void show_field(args& A, const pvd::PVField* fld, const pvd::BitSet *mask)
-{
-    switch(fld->getField()->getType())
-    {
-    case pvd::scalar:
-    {
-        const pvd::PVScalar *scalar=static_cast<const pvd::PVScalar*>(fld);
-        if(scalar->getScalar()->getScalarType()==pvd::pvString) {
-            A.strm<<'\"'<<scalar->getAs<std::string>()<<'\"';
-        } else {
-            A.strm<<scalar->getAs<std::string>();
-        }
-    }
-        return;
-    case pvd::scalarArray:
-    {
-        const pvd::PVScalarArray *scalar=static_cast<const pvd::PVScalarArray*>(fld);
-        const bool isstring = scalar->getScalarArray()->getElementType()==pvd::pvString;
-
-        pvd::shared_vector<const void> arr;
-        scalar->getAs<void>(arr);
-
-        pvd::shared_vector<const std::string> sarr(pvd::shared_vector_convert<const std::string>(arr));
-
-        A.strm.put('[');
-        for(size_t i=0, N=sarr.size(); i<N; i++) {
-            if(i!=0)
-                A.strm.put(',');
-            if(isstring)
-                A.strm.put('\"');
-            A.strm<<sarr[i];
-            if(isstring)
-                A.strm.put('\"');
-        }
-        A.strm.put(']');
-    }
-        return;
-    case pvd::structure:
-        show_struct(A, static_cast<const pvd::PVStructure*>(fld), mask);
-        return;
-    case pvd::structureArray:
-    {
-        pvd::PVStructureArray::const_svector arr(static_cast<const pvd::PVStructureArray*>(fld)->view());
-        A.strm.put('[');
-        A.indent++;
-
-        for(size_t i=0, N=arr.size(); i<N; i++) {
-            if(i!=0)
-                A.strm.put(',');
-            A.doIntent();
-            if(arr[i])
-                show_struct(A, arr[i].get(), 0);
-            else
-                A.strm<<"NULL";
-        }
-
-        A.indent--;
-        A.doIntent();
-        A.strm.put(']');
-    }
-        return;
-    case pvd::union_:
-    {
-        const pvd::PVUnion *U=static_cast<const pvd::PVUnion*>(fld);
-        const pvd::PVField::const_shared_pointer& C(U->get());
-
-        if(!C) {
-            A.strm<<"null";
-        } else {
-            show_field(A, C.get(), 0);
-        }
-    }
-        return;
-    case pvd::unionArray: {
-        const pvd::PVUnionArray *U=static_cast<const pvd::PVUnionArray*>(fld);
-        pvd::PVUnionArray::const_svector arr(U->view());
-        A.strm.put('[');
-        A.indent++;
-
-        for(size_t i=0, N=arr.size(); i<N; i++) {
-            if(i!=0)
-                A.strm.put(',');
-            A.doIntent();
-            if(arr[i])
-                show_field(A, arr[i].get(), 0);
-            else
-                A.strm<<"NULL";
-        }
-
-        A.indent--;
-        A.doIntent();
-        A.strm.put(']');
-
-    }
-        return;
-    }
-    // should not be reached
-    if(A.opts.ignoreUnprintable)
-        A.strm<<"// unprintable field type";
-    else
-        throw std::runtime_error("Encountered unprintable field type");
-}
-
-void expandBS(const pvd::PVStructure& top, pvd::BitSet& mask, bool parents) {
-    if(mask.get(0)) { // special handling because getSubField(0) not allowed
-        // wildcard
-        for(size_t idx=1, N=top.getNumberFields(); idx<N; idx++) {
-            mask.set(idx);
-        }
-
-    } else {
-        for(pvd::int32 idx = mask.nextSetBit(0), N=top.getNumberFields(); idx>=0 && idx<N; idx=mask.nextSetBit(idx+1)) {
-            pvd::PVField::const_shared_pointer fld = top.getSubFieldT(idx);
-
-            // look forward and mark all children
-            for(size_t i=idx+1, N=fld->getNextFieldOffset(); i<N; i++)
-                mask.set(i);
-
-            if(parents) {
-                // look back and mark all parents
-                // we've already stepped past all parents so siblings will not be automatically marked
-                for(const pvd::PVStructure *parent = fld->getParent(); parent; parent = parent->getParent()) {
-                    mask.set(parent->getFieldOffset());
-                }
-            }
-        }
-    }
-}
-
-} // namespace
-
-namespace epics{namespace pvData{
-
-JSONPrintOptions::JSONPrintOptions()
-    :multiLine(true)
-    ,ignoreUnprintable(true)
-    ,indent(0)
-{}
-
-void printJSON(std::ostream& strm,
-               const PVStructure& val,
-               const BitSet& mask,
-               const JSONPrintOptions& opts)
-{
-    args A(strm, opts);
-    pvd::BitSet emask(mask);
-    expandBS(val, emask, true);
-    if(!emask.get(0)) return;
-    show_struct(A, &val, &emask);
-}
-
-void printJSON(std::ostream& strm,
-               const PVField& val,
-               const JSONPrintOptions& opts)
-{
-    args A(strm, opts);
-    show_field(A, &val, 0);
-}
-
-}} // namespace epics::pvData
-
-#endif // EPICS_VERSION_INT

src/json/pv/json.h

@@ -1,154 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-#ifndef PV_JSON_H
-#define PV_JSON_H
-
-#include <istream>
-#include <ostream>
-#include <string>
-#include <map>
-
-#include <pv/pvdVersion.h>
-#include <pv/pvData.h>
-
-#if EPICS_VERSION_INT>=VERSION_INT(3,15,0,1)
-
-#ifdef epicsExportSharedSymbols
-#   define pvjson_epicsExportSharedSymbols
-#   undef epicsExportSharedSymbols
-#endif
-
-#include <yajl_parse.h>
-
-#ifdef pvjson_epicsExportSharedSymbols
-#   define epicsExportSharedSymbols
-#   include "shareLib.h"
-#endif
-
-#include <shareLib.h>
-
-namespace epics{namespace pvData{
-
-class BitSet;
-
-/** @defgroup pvjson JSON print/parse
- *
- * Printing PVField as JSON and parsing JSON into PVField.
- *
- * @{
- */
-
-//! Options used during printing
-struct epicsShareClass JSONPrintOptions
-{
-    bool multiLine;        //!< include new lines
-    bool ignoreUnprintable;//!< ignore union/union array when encountered
-    unsigned indent;       //!< Initial indentation (# of spaces)
-    JSONPrintOptions();
-};
-
-/** Print PVStructure as JSON
- *
- * 'mask' selects those fields which will be printed.
- * @version Overload added after 7.0.0
- */
-epicsShareFunc
-void printJSON(std::ostream& strm,
-               const PVStructure& val,
-               const BitSet& mask,
-               const JSONPrintOptions& opts = JSONPrintOptions());
-
-/** Print PVField as JSON
- * @version Overload added after 7.0.0
- */
-epicsShareFunc
-void printJSON(std::ostream& strm,
-               const PVField& val,
-               const JSONPrintOptions& opts = JSONPrintOptions());
-
-// To be deprecated in favor of previous form
-FORCE_INLINE
-void printJSON(std::ostream& strm,
-               const PVField::const_shared_pointer& val,
-               const JSONPrintOptions& opts = JSONPrintOptions())
-{
-    printJSON(strm, *val, opts);
-}
-
-/** Parse JSON text into a PVStructure
- *
- * Restrictions:
- *
- * - Top level must be {}  dict/object
- * - field values must be number, string, array, or dict/object
- * - array values must be number or string
- */
-epicsShareFunc
-PVStructure::shared_pointer parseJSON(std::istream& strm);
-
-/** Parse JSON and store into the provided PVStructure.
- *
- * Restrictions:
- *
- * - array of union not supported
- * - Only scalar value assigned to union
- *
- * @param strm Read JSON text from stream
- * @param dest Store in fields of this structure
- * @param assigned Which fields of _dest_ were assigned. (Optional)
- * @throws std::runtime_error on failure.  dest and assigned may be modified.
- * @version Overload added after 7.0.0
- */
-epicsShareFunc
-void parseJSON(std::istream& strm,
-               PVField& dest,
-               BitSet *assigned=0);
-
-// To be deprecated in favor of previous form
-FORCE_INLINE
-void parseJSON(std::istream& strm,
-               const PVField::shared_pointer& dest,
-               BitSet *assigned=0)
-{
-    parseJSON(strm, *dest, assigned);
-}
-
-
-/** Wrapper around yajl_parse()
- *
- * Parse entire input stream.
- * Errors if extranious non-whitespace found after the point were parsing completes.
- *
- * @param src The stream from which input charactors are read
- * @param handle A parser handle previously allocated with yajl_alloc().  Not free'd on success or failure.
- *
- * @returns true if parsing completes successfully.  false if parsing cancelled by callback.  throws other errors
- *
- * @note The form of this call depends on EPICS_YAJL_VERSION
- */
-epicsShareFunc
-bool yajl_parse_helper(std::istream& src,
-                       yajl_handle handle);
-
-namespace yajl {
-// undef implies API version 0
-#ifndef EPICS_YAJL_VERSION
-typedef long integer_arg;
-typedef unsigned size_arg;
-#else
-typedef long long integer_arg;
-typedef size_t size_arg;
-#endif
-} // namespace epics::pvData::yajl
-
-/** @} */
-
-}} // namespace epics::pvData
-
-#else
-#  error JSON parser requires EPICS Base >= 3.15.0.1
-#endif // EPICS_VERSION_INT
-
-#endif // PV_JSON_H

src/misc/Makefile

@@ -4,6 +4,7 @@ SRC_DIRS += $(PVDATA_SRC)/misc
 
 INC += pv/noDefaultMethods.h
 INC += pv/lock.h
+INC += pv/requester.h
 INC += pv/serialize.h
 INC += pv/bitSet.h
 INC += pv/byteBuffer.h
@@ -11,31 +12,32 @@ INC += pv/epicsException.h
 INC += pv/serializeHelper.h
 INC += pv/event.h
 INC += pv/thread.h
+INC += pv/executor.h
+INC += pv/timeFunction.h
 INC += pv/timer.h
+INC += pv/queue.h
+INC += pv/messageQueue.h
+INC += pv/destroyable.h
 INC += pv/status.h
 INC += pv/sharedPtr.h
-INC += pv/debugPtr.h
 INC += pv/localStaticLock.h
 INC += pv/typeCast.h
 INC += pv/sharedVector.h
 INC += pv/templateMeta.h
 INC += pv/current_function.h
-INC += pv/pvUnitTest.h
-INC += pv/reftrack.h
-INC += pv/anyscalar.h
 
 LIBSRCS += byteBuffer.cpp
 LIBSRCS += bitSet.cpp
 LIBSRCS += epicsException.cpp
+LIBSRCS += requester.cpp
 LIBSRCS += serializeHelper.cpp
 LIBSRCS += event.cpp
+LIBSRCS += executor.cpp
+LIBSRCS += timeFunction.cpp
 LIBSRCS += timer.cpp
 LIBSRCS += status.cpp
+LIBSRCS += messageQueue.cpp
 LIBSRCS += localStaticLock.cpp
 LIBSRCS += typeCast.cpp
-LIBSRCS += thread.cpp
 LIBSRCS += parseToPOD.cpp
-LIBSRCS += pvUnitTest.cpp
-LIBSRCS += debugPtr.cpp
-LIBSRCS += reftrack.cpp
-LIBSRCS += anyscalar.cpp
+

src/misc/anyscalar.cpp

@@ -1,161 +0,0 @@
-
-#include <epicsAssert.h>
-
-#define epicsExportSharedSymbols
-#include <shareLib.h>
-
-#include "pv/anyscalar.h"
-
-namespace epics {namespace pvData {
-
-AnyScalar::AnyScalar(ScalarType type, const void *buf)
-{
-    if(type==pvString) {
-        new (_wrap.blob) std::string(*static_cast<const std::string*>(buf));
-
-    } else {
-        memcpy(_wrap.blob, buf, ScalarTypeFunc::elementSize(type));
-    }
-
-    _stype = type;
-}
-
-AnyScalar::AnyScalar(const AnyScalar& o)
-    :_stype(o._stype)
-{
-    if(o._stype==pvString) {
-        new (_wrap.blob) std::string(o._as<std::string>());
-    } else if(o._stype!=(ScalarType)-1) {
-        memcpy(_wrap.blob, o._wrap.blob, sizeof(_largest_blob));
-    }
-}
-
-#if __cplusplus>=201103L
-AnyScalar::AnyScalar(AnyScalar&& o)
-    :_stype(o._stype)
-{
-    typedef std::string string;
-    if(o._stype==pvString) {
-        new (_wrap.blob) std::string();
-        _as<std::string>() = std::move(o._as<std::string>());
-        o._as<string>().~string();
-    } else if(o._stype!=(ScalarType)-1) {
-        memcpy(_wrap.blob, o._wrap.blob, sizeof(_largest_blob));
-    }
-    o._stype = (ScalarType)-1;
-}
-#endif
-
-void AnyScalar::clear() {
-    if(_stype==pvString) {
-        typedef std::string string;
-        _as<string>().~string();
-    }
-    // other types need no cleanup
-    _stype = (ScalarType)-1;
-}
-
-void AnyScalar::swap(AnyScalar& o) {
-    typedef std::string string;
-    switch((int)_stype) {
-    case -1:
-        switch((int)o._stype) {
-        case -1:
-            // nil <-> nil
-            break;
-        case pvString:
-            // nil <-> string
-            new (_wrap.blob) std::string();
-            _as<std::string>().swap(o._as<std::string>());
-            o._as<std::string>().~string();
-            break;
-        default:
-            // nil <-> non-string
-            memcpy(_wrap.blob, o._wrap.blob, sizeof(_largest_blob));
-            break;
-        }
-        break;
-    case pvString:
-        switch((int)o._stype) {
-        case -1:
-            // string <-> nil
-            new (o._wrap.blob) std::string();
-            _as<std::string>().swap(o._as<std::string>());
-            _as<std::string>().~string();
-            break;
-        case pvString:
-            // string <-> string
-            _as<std::string>().swap(o._as<std::string>());
-            break;
-        default: {
-            // string <-> non-string
-            std::string temp;
-            temp.swap(_as<std::string>());
-
-            _as<std::string>().~string();
-
-            memcpy(_wrap.blob, o._wrap.blob, sizeof(_largest_blob));
-
-            new (o._wrap.blob) std::string();
-            temp.swap(o._as<std::string>());
-        }
-            break;
-        }
-        break;
-    default:
-        switch((int)o._stype) {
-        case -1:
-            // non-string <-> nil
-            memcpy(o._wrap.blob, _wrap.blob, sizeof(_largest_blob));
-            break;
-        case pvString: {
-            // non-string <-> string
-            std::string temp;
-            temp.swap(o._as<std::string>());
-
-            o._as<std::string>().~string();
-
-            memcpy(o._wrap.blob, _wrap.blob, sizeof(_largest_blob));
-
-            new (_wrap.blob) std::string();
-            temp.swap(_as<std::string>());
-        }
-            break;
-        default:
-            // non-string <-> non-string
-            _largest_blob temp;
-            memcpy(&temp, _wrap.blob, sizeof(_largest_blob));
-            memcpy(_wrap.blob, o._wrap.blob, sizeof(_largest_blob));
-            memcpy(o._wrap.blob, &temp, sizeof(_largest_blob));
-            // std::swap(o._wrap.blob, _wrap.blob); // gcc <=4.3 doesn't like this
-            break;
-        }
-        break;
-    }
-    std::swap(_stype, o._stype);
-}
-const void* AnyScalar::bufferUnsafe() const {
-    if(_stype==pvString) {
-        return as<std::string>().c_str();
-    } else {
-        return _wrap.blob;
-    }
-}
-
-std::ostream& operator<<(std::ostream& strm, const AnyScalar& v)
-{
-    switch(v.type()) {
-#define CASE(BASETYPE, PVATYPE, DBFTYPE, PVACODE) case pv ## PVACODE: strm<<v._as<PVATYPE>(); break;
-#define CASE_REAL_INT64
-#define CASE_STRING
-#include "pv/typemap.h"
-#undef CASE
-#undef CASE_REAL_INT64
-#undef CASE_STRING
-    default:
-        strm<<"(nil)"; break;
-    }
-    return strm;
-}
-
-}} // namespace epics::pvData

src/misc/bitSet.cpp

@@ -10,7 +10,6 @@
 #include <stdio.h>
 #include <iostream>
 #include <stdexcept>
-#include <algorithm>
 
 #include <epicsMutex.h>
 
@@ -55,19 +54,6 @@ namespace epics { namespace pvData {
         words.reserve((nbits == 0) ? 1 : WORD_INDEX(nbits-1) + 1);
     }
 
-#if __cplusplus>=201103L
-    BitSet::BitSet(std::initializer_list<uint32> I)
-    {
-        // optimistically guess that highest bit is last (not required)
-        words.reserve((I.size() == 0) ? 1 : WORD_INDEX(*(I.end()-1)) + 1);
-
-        for(uint32 idx : I)
-        {
-            set(idx);
-        }
-    }
-#endif
-
     BitSet::~BitSet() {}
 
     void BitSet::recalculateWordsInUse() {
@@ -89,7 +75,7 @@ namespace epics { namespace pvData {
         ensureCapacity(wordIndex+1);
     }
 
-    BitSet& BitSet::flip(uint32 bitIndex) {
+    void BitSet::flip(uint32 bitIndex) {
 
         uint32 wordIdx = WORD_INDEX(bitIndex);
         expandTo(wordIdx);
@@ -97,27 +83,25 @@ namespace epics { namespace pvData {
         words[wordIdx] ^= (((uint64)1) << WORD_OFFSET(bitIndex));
 
         recalculateWordsInUse();
-        return *this;
     }
 
-    BitSet& BitSet::set(uint32 bitIndex) {
+    void BitSet::set(uint32 bitIndex) {
 
         uint32 wordIdx = WORD_INDEX(bitIndex);
         expandTo(wordIdx);
 
         words[wordIdx] |= (((uint64)1) << WORD_OFFSET(bitIndex));
-        return *this;
     }
 
-    BitSet& BitSet::clear(uint32 bitIndex) {
+    void BitSet::clear(uint32 bitIndex) {
 
         uint32 wordIdx = WORD_INDEX(bitIndex);
-        if (wordIdx < words.size()) {
-            words[wordIdx] &= ~(((uint64)1) << WORD_OFFSET(bitIndex));
+        if (wordIdx >= words.size())
+            return;
 
-            recalculateWordsInUse();
-        }
-        return *this;
+        words[wordIdx] &= ~(((uint64)1) << WORD_OFFSET(bitIndex));
+
+        recalculateWordsInUse();
     }
 
     void BitSet::set(uint32 bitIndex, bool value) {
@@ -211,20 +195,6 @@ namespace epics { namespace pvData {
         return words.size() * BITS_PER_WORD;
     }
 
-    bool BitSet::logical_and(const BitSet& set) const
-    {
-        size_t nwords = std::min(words.size(), set.words.size());
-        for(size_t i=0; i<nwords; i++) {
-            if(words[i] & set.words[i])
-                return true;
-        }
-        return false;
-    }
-    bool BitSet::logical_or(const BitSet& set) const
-    {
-        return !words.empty() || !set.words.empty();
-    }
-
     BitSet& BitSet::operator&=(const BitSet& set) {
         // Check for self-assignment!
         if (this == &set) return *this;

src/misc/debugPtr.cpp

@@ -1,165 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-#if __cplusplus>=201103L
-
-#include <epicsMutex.h>
-#include <epicsGuard.h>
-
-#define epicsExportSharedSymbols
-#include <pv/debugPtr.h>
-
-namespace {
-typedef epicsGuard<epicsMutex> Guard;
-}
-
-namespace epics {
-namespace debug {
-
-// joins together a group of ptr_base instances
-// which all have the same dtor
-struct tracker {
-    epicsMutex mutex;
-    ptr_base::ref_set_t refs;
-};
-
-void shared_ptr_base::track_new()
-{
-    if(track) {
-        Guard G(track->mutex);
-        track->refs.insert(this);
-    }
-    snap_stack();
-}
-
-// create new tracker if ptr!=nullptr, otherwise clear
-void shared_ptr_base::track_new(void* ptr)
-{
-    track_clear();
-    if(ptr){
-        track.reset(new tracker);
-        Guard G(track->mutex);
-        track->refs.insert(this);
-    }
-    snap_stack();
-}
-
-void shared_ptr_base::track_assign(const shared_ptr_base &o)
-{
-    if(track!=o.track) {
-        track_clear();
-        track = o.track;
-        if(track) {
-            Guard G(track->mutex);
-            track->refs.insert(this);
-        }
-        snap_stack();
-    }
-}
-
-void shared_ptr_base::track_clear()
-{
-    if(track) {
-        Guard G(track->mutex);
-        track->refs.erase(this);
-    }
-    track.reset();
-#ifndef EXCEPT_USE_NONE
-    m_depth = 0;
-#endif
-}
-
-void shared_ptr_base::swap(shared_ptr_base &o)
-{
-    // we cheat a bit here to avoid lock order, and to lock only twice
-    if(track) {
-        Guard G(track->mutex);
-        track->refs.insert(&o);
-        track->refs.erase(this);
-    }
-    track.swap(o.track);
-    if(track) {
-        Guard G(track->mutex);
-        track->refs.insert(this);
-        track->refs.erase(&o);
-    }
-    //TODO: keep original somehow???
-    snap_stack();
-    o.snap_stack();
-}
-
-void shared_ptr_base::snap_stack()
-{
-    if(!track) {
-#ifndef EXCEPT_USE_NONE
-        m_depth = 0;
-#endif
-        return;
-    }
-#if defined(EXCEPT_USE_BACKTRACE)
-    {
-        m_depth=backtrace(m_stack,EXCEPT_DEPTH);
-    }
-#else
-    {}
-#endif
-
-}
-
-void shared_ptr_base::show_stack(std::ostream& strm) const
-{
-    strm<<"ptr "<<this;
-#ifndef EXCEPT_USE_NONE
-    if(m_depth<=0) return;
-#endif
-#if 0 && defined(EXCEPT_USE_BACKTRACE)
-    {
-
-        char **symbols=backtrace_symbols(m_stack, m_depth);
-
-        strm<<": ";
-        for(int i=0; i<m_depth; i++) {
-            strm<<symbols[i]<<", ";
-        }
-
-        std::free(symbols);
-    }
-#elif !defined(EXCEPT_USE_NONE)
-    {
-        strm<<": ";
-        for(int i=0; i<m_depth; i++) {
-            strm<<std::hex<<m_stack[i]<<" ";
-        }
-    }
-#endif
-
-}
-
-void ptr_base::show_refs(std::ostream& strm, bool self, bool weak) const
-{
-    if(!track) {
-        strm<<"# No refs\n";
-    } else {
-        Guard G(track->mutex);
-        for(auto ref : track->refs) {
-            if(!self && ref==this) continue;
-            strm<<'#';
-            ref->show_stack(strm);
-            strm<<'\n';
-        }
-    }
-}
-
-void ptr_base::spy_refs(ref_set_t &refs) const
-{
-    if(track) {
-        Guard G(track->mutex);
-        refs.insert(track->refs.begin(), track->refs.end());
-    }
-}
-
-}} // namespace epics::debug
-
-#endif // __cplusplus>=201103L

src/misc/executor.cpp

@@ -0,0 +1,98 @@
+/* executor.cpp */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#include <cstddef>
+#include <cstdlib>
+#include <cstddef>
+#include <string>
+#include <cstdio>
+
+#include <epicsEvent.h>
+#include <epicsMutex.h>
+#include <epicsThread.h>
+
+#define epicsExportSharedSymbols
+#include <pv/executor.h>
+
+using std::string;
+
+namespace epics { namespace pvData {
+
+// special instance to stop the executor thread
+class ExecutorShutdown : public Command {
+    virtual void command();
+};
+
+void ExecutorShutdown::command()
+{
+}
+
+static
+std::tr1::shared_ptr<Command> shutdown(new ExecutorShutdown());
+
+
+Executor::Executor(string const & threadName,ThreadPriority priority)
+:  thread(threadName,priority,this)
+{
+} 
+
+Executor::~Executor()
+{
+    execute(shutdown);
+    stopped.wait();
+    // The thread signals 'stopped' while still holding
+    // the lock.  By taking it we wait for the run() function
+    // to actually return
+    Lock xx(mutex);
+    head.reset();
+    tail.reset();
+}
+
+void Executor::run()
+{
+    Lock xx(mutex);
+    while(true) {
+        while(!head.get()) {
+            xx.unlock();
+            moreWork.wait();
+            xx.lock();
+        }
+        CommandPtr command = head;
+        head = command->next;
+        if(!command.get()) continue;
+        if(command.get()==shutdown.get()) break;
+        xx.unlock();
+        try {
+            command->command();
+        }catch(std::exception& e){
+            //TODO: feed into logging mechanism
+            fprintf(stderr, "Executor: Unhandled exception: %s",e.what());
+        }catch(...){
+            fprintf(stderr, "Executor: Unhandled exception");
+        }
+
+        xx.lock();
+    }
+    stopped.signal();
+}
+
+void Executor::execute(CommandPtr const & command)
+{
+    Lock xx(mutex);
+    command->next.reset();
+    if(!head.get()) {
+        head = command;
+        moreWork.signal();
+        return;
+    }
+    CommandPtr tail = head;
+    while(tail->next) tail = tail->next;
+    tail->next = command;   
+}
+
+}}

src/misc/messageQueue.cpp

@@ -0,0 +1,115 @@
+/* messageQueue.cpp */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#include <string>
+
+#define epicsExportSharedSymbols
+#include <pv/messageQueue.h>
+
+using std::string;
+
+namespace epics { namespace pvData { 
+
+MessageNode::MessageNode()
+: messageType(infoMessage)
+{}
+
+string MessageNode::getMessage() const
+{
+    return message;
+}
+
+MessageType MessageNode::getMessageType() const
+{
+    return messageType;
+}
+
+MessageQueuePtr MessageQueue::create(int size)
+{
+    MessageNodePtrArray nodeArray;
+    nodeArray.reserve(size);
+    for(int i=0; i<size; i++) {
+        nodeArray.push_back(
+            MessageNodePtr(new MessageNode()));
+    }
+    return std::tr1::shared_ptr<MessageQueue>(new MessageQueue(nodeArray));
+}
+
+MessageQueue::MessageQueue(MessageNodePtrArray &data)
+: Queue<MessageNode>(data),
+  overrun(0)
+{ }
+
+MessageQueue::~MessageQueue()
+{
+}
+
+MessageNodePtr &MessageQueue::get() {
+    if(getNumberUsed()==0) return nullNode;
+    lastGet = getUsed();
+    return lastGet;
+}
+
+void MessageQueue::release() {
+    if(lastGet.get()==NULL) return;
+    releaseUsed(lastGet);
+    lastGet.reset();
+}
+bool MessageQueue::put(string message,MessageType messageType,bool replaceLast)
+{
+    MessageNodePtr node = getFree();
+    if(node.get()!= NULL) {
+        node->message = message;
+        node->messageType = messageType;
+        lastPut = node;
+        setUsed(node);
+        return true;
+    }
+    overrun++;
+    if(replaceLast) {
+        node = lastPut;
+        node->message = message;
+        node->messageType = messageType;
+        return true;
+    }
+    return false;
+}
+
+bool MessageQueue::isEmpty()
+{
+    int free = getNumberFree();
+    if(free==capacity()) return true;
+    return false;
+}
+
+bool MessageQueue::isFull()
+{
+    if(getNumberFree()==0) return true;
+    return false;
+}
+
+int MessageQueue::getClearOverrun()
+{
+    int num = overrun;
+    overrun = 0;
+    return num;
+}
+
+MessageQueuePtr createMessageQueue(int size)
+{
+    MessageNodePtrArray nodeArray;
+    nodeArray.reserve(size);
+    for(int i=0; i<size; i++) {
+        nodeArray.push_back(
+            MessageNodePtr(new MessageNode()));
+    }
+    return std::tr1::shared_ptr<MessageQueue>(new MessageQueue(nodeArray));
+}
+
+
+}}

src/misc/parseToPOD.cpp

@@ -254,7 +254,7 @@ epicsParseFloat(const char *str, float *to, char **units)
 #endif
 
 // Sometimes we have to provide our own copy of strtoll()
-#if defined(_MSC_VER) && _MSC_VER < 1800
+#if defined(_WIN32) && !defined(_MINGW)
 // On Windows with MSVC, Base-3.15 provides strtoll()
 #    define NEED_OLL_FUNCS (EPICS_VERSION_INT < VERSION_INT(3,15,0,1))
 #elif defined(vxWorks)
@@ -507,20 +507,20 @@ void handleParseError(int err)
 
 namespace epics { namespace pvData { namespace detail {
 
-void parseToPOD(const char* in, boolean *out)
+void parseToPOD(const string & in, boolean *out)
 {
-    if(epicsStrCaseCmp(in,"true")==0)
+    if(epicsStrCaseCmp(in.c_str(),"true")==0)
         *out = 1;
-    else if(epicsStrCaseCmp(in,"false")==0)
+    else if(epicsStrCaseCmp(in.c_str(),"false")==0)
         *out = 0;
     else
         throw std::runtime_error("parseToPOD: string no match true/false");
 }
 
 #define INTFN(T, S) \
-void parseToPOD(const char* in, T *out) { \
+void parseToPOD(const string& in, T *out) { \
     epics ## S temp; \
-    int err = epicsParse ## S (in, &temp, 0, NULL); \
+    int err = epicsParse ## S (in.c_str(), &temp, 0, NULL); \
     if(err)   handleParseError(err); \
     else      *out = temp; \
 }
@@ -532,31 +532,31 @@ INTFN(uint16_t, UInt16);
 INTFN(int32_t, Int32);
 INTFN(uint32_t, UInt32);
 
-void parseToPOD(const char* in, int64_t *out) {
+void parseToPOD(const string& in, int64_t *out) {
 #ifdef NEED_LONGLONG
-    int err = epicsParseLongLong(in, out, 0, NULL);
+    int err = epicsParseLongLong(in.c_str(), out, 0, NULL);
 #else
-    int err = epicsParseLong(in, out, 0, NULL);
+    int err = epicsParseLong(in.c_str(), out, 0, NULL);
 #endif
     if(err)   handleParseError(err);
 }
 
-void parseToPOD(const char* in, uint64_t *out) {
+void parseToPOD(const string& in, uint64_t *out) {
 #ifdef NEED_LONGLONG
-    int err = epicsParseULongLong(in, out, 0, NULL);
+    int err = epicsParseULongLong(in.c_str(), out, 0, NULL);
 #else
-    int err = epicsParseULong(in, out, 0, NULL);
+    int err = epicsParseULong(in.c_str(), out, 0, NULL);
 #endif
     if(err)   handleParseError(err);
 }
 
-void parseToPOD(const char* in, float *out) {
-    int err = epicsParseFloat(in, out, NULL);
+void parseToPOD(const string& in, float *out) {
+    int err = epicsParseFloat(in.c_str(), out, NULL);
     if(err)   handleParseError(err);
 }
 
-void parseToPOD(const char* in, double *out) {
-    int err = epicsParseDouble(in, out, NULL);
+void parseToPOD(const string& in, double *out) {
+    int err = epicsParseDouble(in.c_str(), out, NULL);
     if(err)   handleParseError(err);
 #if defined(vxWorks)
     /* vxWorks strtod returns [-]epicsINF when it should return ERANGE error.
@@ -564,7 +564,7 @@ void parseToPOD(const char* in, double *out) {
      * this into an ERANGE error
      */
     else if (*out == epicsINF || *out == -epicsINF) {
-        const char* s = in;
+        const char* s = in.c_str();
         int c;
 
         /* skip spaces and the sign */

src/misc/pv/anyscalar.h

@@ -1,251 +0,0 @@
-#ifndef PV_ANYSCALAR_H
-#define PV_ANYSCALAR_H
-
-#if __cplusplus>=201103L
-#  include <type_traits>
-#endif
-
-#include <ostream>
-#include <exception>
-#include <map>
-
-#include <epicsAssert.h>
-
-#include <pv/templateMeta.h>
-#include <pv/typeCast.h>
-#include <pv/pvIntrospect.h> /* for ScalarType enum */
-
-namespace epics{namespace pvData{
-namespace detail {
-
-// special mangling for AnyScalar ctor to map from argument type to storage type.
-// allow construction from constants.
-template <typename T>
-struct any_storage_type { typedef T type; };
-template<> struct any_storage_type<int> { typedef int32 type; };
-template<> struct any_storage_type<unsigned> { typedef uint32 type; };
-template<> struct any_storage_type<char*> { typedef std::string type; };
-template<> struct any_storage_type<const char*> { typedef std::string type; };
-
-#if __cplusplus>=201103L
-// std::max() isn't constexpr until c++14 :(
-constexpr size_t cmax(size_t A, size_t B) {
-    return A>B ? A : B;
-}
-#endif
-
-}// namespace detail
-
-/** A type-safe variant union capable of holding
- *  any of the PVD scalar types (POD or string)
- *
- @code
- AnyScalar A(5);
- assert(A.type()==pvInt);
- assert(A.ref<int32>()==5);
- assert(A.as<int32>()==5);
- assert(A.as<double>()==5.0);
- assert(A.ref<double>()==5.0); // throws AnyScalar::bad_cast
- @endcode
- */
-class epicsShareClass AnyScalar {
-public:
-    struct bad_cast : public std::exception {
-#if __cplusplus>=201103L
-        bad_cast() noexcept {}
-        virtual ~bad_cast() noexcept {}
-        virtual const char* what() const noexcept
-#else
-        bad_cast() throw() {}
-        virtual ~bad_cast() throw() {}
-        virtual const char* what() const throw()
-#endif
-        { return "bad_cast() type mis-match"; }
-    };
-
-private:
-    ScalarType _stype;
-
-    // always reserve enough storage for std::string or double (assumed worst case)
-#if __cplusplus>=201103L
-
-    struct wrap_t {
-        typename std::aligned_storage<detail::cmax(sizeof(std::string), sizeof(double)),
-                                      detail::cmax(alignof(std::string), alignof(double))
-        >::type blob[1];
-    } _wrap;
-#else
-    struct wrap_t {
-        union blob_t {
-            char data[sizeof(std::string)];
-            double align_f; // assume std::string alignment <= 8
-        } blob[1];
-    } _wrap;
-#endif
-
-    // assumed largest non-string type
-    typedef double _largest_blob;
-
-    template<typename T>
-    inline T& _as() {
-        return *reinterpret_cast<T*>(_wrap.blob);
-    }
-    template<typename T>
-    inline const T& _as() const {
-        return *reinterpret_cast<const T*>(_wrap.blob);
-    }
-public:
-    //! Construct empty
-    //! @post empty()==true
-    AnyScalar() : _stype((ScalarType)-1) {}
-
-    //! Construct from provided value.
-    template<typename T>
-    explicit AnyScalar(T v)
-    {
-        typedef typename meta::strip_const<T>::type T2;
-        typedef typename detail::any_storage_type<T2>::type TT;
-
-        STATIC_ASSERT(sizeof(TT)<=sizeof(_wrap.blob));
-
-        new (_wrap.blob) TT(v);
-
-        // this line fails to compile when type T can't be mapped to one of
-        // the PVD scalar types.
-        _stype = (ScalarType)ScalarTypeID<TT>::value;
-    }
-
-    //! Construct from un-typed pointer.
-    //! Caller is responsible to ensure that buf actually points to the provided type
-    //! @version Added after 7.0.0
-    AnyScalar(ScalarType type, const void *buf);
-
-    AnyScalar(const AnyScalar& o);
-
-#if __cplusplus>=201103L
-    AnyScalar(AnyScalar&& o);
-#endif
-
-    inline ~AnyScalar() {clear();}
-
-    inline AnyScalar& operator=(const AnyScalar& o) {
-        AnyScalar(o).swap(*this);
-        return *this;
-    }
-
-    template<typename T>
-    inline AnyScalar& operator=(T v) {
-        AnyScalar(v).swap(*this);
-        return *this;
-    }
-
-#if __cplusplus>=201103L
-    inline AnyScalar& operator=(AnyScalar&& o) {
-        clear();
-        swap(o);
-        return *this;
-    }
-#endif
-
-    //! Reset internal state.
-    //! @version Added after 7.0.0
-    //! @post empty()==true
-    void clear();
-
-    void swap(AnyScalar& o);
-
-    //! Type code of contained value.  Or (ScalarType)-1 is empty.
-    inline ScalarType type() const {
-        return _stype;
-    }
-
-    inline       void* unsafe()       { return _wrap.blob; }
-    inline const void* unsafe() const { return _wrap.blob; }
-
-    inline bool empty() const { return _stype==(ScalarType)-1; }
-
-#if __cplusplus>=201103L
-    explicit operator bool() const { return !empty(); }
-#else
-private:
-    typedef void (AnyScalar::*bool_type)(AnyScalar&);
-public:
-    operator bool_type() const { return !empty() ? &AnyScalar::swap : 0; }
-#endif
-
-    //! Provide read-only access to underlying buffer.
-    //! For a string this is std::string::c_str().
-    //! @version Added after 7.0.0
-    const void* bufferUnsafe() const;
-
-    /** Return typed reference to wrapped value.  Non-const reference allows value modification
-     *
-     * @throws bad_cast when the requested type does not match the stored type
-     @code
-       AnyScalar v(42);
-       v.ref<uint32>() = 43;
-       assert(v.ref<uint32>() == 43);
-     @endcode
-     */
-    template<typename T>
-    inline
-    // T -> strip_const -> map to storage type -> add reference
-    typename detail::any_storage_type<typename meta::strip_const<T>::type>::type&
-    ref() {
-        typedef typename meta::strip_const<T>::type T2;
-        typedef typename detail::any_storage_type<T2>::type TT;
-
-        if(_stype!=(ScalarType)ScalarTypeID<TT>::value)
-            throw bad_cast();
-        return reinterpret_cast<TT&>(_wrap.blob);
-    }
-
-    /** Return typed reference to wrapped value.  Const reference does not allow modification.
-     *
-     * @throws bad_cast when the requested type does not match the stored type
-     @code
-       const AnyScalar v(42);
-       assert(v.ref<uint32>() == 42);
-     @endcode
-     */
-    template<typename T>
-    inline
-    // T -> strip_const -> map to storage type -> add const reference
-    typename meta::decorate_const<typename detail::any_storage_type<typename meta::strip_const<T>::type>::type>::type&
-    ref() const {
-        typedef typename meta::strip_const<T>::type T2;
-        typedef typename detail::any_storage_type<T2>::type TT;
-
-        if(_stype!=(ScalarType)ScalarTypeID<TT>::value)
-            throw bad_cast();
-        return reinterpret_cast<typename meta::decorate_const<TT>::type&>(_wrap.blob);
-    }
-
-    /** copy out wrapped value, with a value conversion.
-     *
-     * @throws bad_cast when empty()==true
-     */
-    template<typename T>
-    inline
-    T as() const {
-        typedef typename meta::strip_const<T>::type T2;
-        typedef typename detail::any_storage_type<T2>::type TT;
-
-        if(_stype==(ScalarType)-1)
-            throw bad_cast();
-        TT ret;
-        castUnsafeV(1, (ScalarType)ScalarTypeID<T2>::value, &ret,
-                                   _stype, _wrap.blob);
-        return ret;
-    }
-
-private:
-    friend epicsShareFunc std::ostream& operator<<(std::ostream& strm, const AnyScalar& v);
-};
-
-epicsShareExtern
-std::ostream& operator<<(std::ostream& strm, const AnyScalar& v);
-
-}} // namespace epics::pvData
-
-#endif // PV_ANYSCALAR_H

src/misc/pv/bitSet.h

@@ -9,10 +9,6 @@
 #ifndef BITSET_H
 #define BITSET_H
 
-#if __cplusplus>=201103L
-#  include <initializer_list>
-#endif
-
 #include <vector>
 
 #include <pv/pvType.h>
@@ -50,8 +46,6 @@ namespace epics { namespace pvData {
      * synchronization.
      *
      * Based on Java implementation.
-     *
-     * @since 7.0.0 Many methods return BitSet& to facilite method chaining.
      */
     class epicsShareClass BitSet : public Serializable {
     public:
@@ -71,16 +65,6 @@ namespace epics { namespace pvData {
          */
         BitSet(uint32 nbits);
 
-#if __cplusplus>=201103L
-        /** Initialize from a list of indicies
-         @code
-         BitSet X({1, 5});
-         assert(X.get(1) && X.get(5));
-         @endcode
-         */
-        BitSet(std::initializer_list<uint32> I);
-#endif
-
         /**
          * Destructor.
          */
@@ -92,21 +76,21 @@ namespace epics { namespace pvData {
          *
          * @param  bitIndex the index of the bit to flip
          */
-        BitSet& flip(uint32 bitIndex);
+        void flip(uint32 bitIndex);
 
         /**
          * Sets the bit at the specified index to @c true.
          *
          * @param  bitIndex a bit index
          */
-        BitSet& set(uint32 bitIndex);
+        void set(uint32 bitIndex);
 
         /**
          * Sets the bit specified by the index to @c false.
          *
          * @param  bitIndex the index of the bit to be cleared
          */
-        BitSet& clear(uint32 bitIndex);
+        void clear(uint32 bitIndex);
 
         /**
          * Sets the bit at the specified index to the specified value.
@@ -183,13 +167,8 @@ namespace epics { namespace pvData {
          */
         uint32 size() const;
 
-        //! Returns true if any bit is set in both *this and other
-        bool logical_and(const BitSet& other) const;
-        //! Returns true if any bit is set in both *this or other
-        bool logical_or(const BitSet& other) const;
-
         /**
-         * Performs a bitwise <b>AND</b> of this target bit set with the
+         * Performs a logical <b>AND</b> of this target bit set with the
          * argument bit set. This bit set is modified so that each bit in it
          * has the value @c true if and only if it both initially
          * had the value @c true and the corresponding bit in the
@@ -200,7 +179,7 @@ namespace epics { namespace pvData {
         BitSet& operator&=(const BitSet& set);
 
         /**
-         * Performs a bitwise <b>OR</b> of this bit set with the bit set
+         * Performs a logical <b>OR</b> of this bit set with the bit set
          * argument. This bit set is modified so that a bit in it has the
          * value @c true if and only if it either already had the
          * value @c true or the corresponding bit in the bit set
@@ -211,7 +190,7 @@ namespace epics { namespace pvData {
         BitSet& operator|=(const BitSet& set);
 
         /**
-         * Performs a bitwise <b>XOR</b> of this bit set with the bit set
+         * Performs a logical <b>XOR</b> of this bit set with the bit set
          * argument. This bit set is modified so that a bit in it has the
          * value @c true if and only if one of the following
          * statements holds:

src/misc/pv/debugPtr.h

@@ -1,328 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-/* Author:  Michael Davidsaver */
-/* wrapper around shared_ptr which tracks backwards references.
- * Can help to find ref. leaks, loops, and other exciting bugs.
- * See comments in sharedPtr.h
- */
-#ifndef DEBUGPTR_H
-#define DEBUGPTR_H
-
-#if __cplusplus<201103L
-#  error c++11 required
-#endif
-
-#include <ostream>
-#include <memory>
-#include <set>
-
-#include <pv/epicsException.h>
-
-#include <shareLib.h>
-
-//! User code should test this macro
-//! before calling epics::debug::shared_ptr::show_refs()
-#define HAVE_SHOW_REFS
-
-namespace epics {
-namespace debug {
-
-struct tracker;
-class shared_ptr_base;
-
-class epicsShareClass ptr_base {
-    friend class shared_ptr_base;
-    template<typename A>
-    friend class shared_ptr;
-    template<typename A>
-    friend class weak_ptr;
-protected:
-    typedef std::shared_ptr<tracker> track_t;
-    track_t track;
-
-    ptr_base() noexcept : track() {}
-    ptr_base(const track_t& track) :track(track) {}
-    ptr_base(const ptr_base&) = delete;
-    ptr_base(ptr_base&&) = delete;
-
-    ptr_base& operator=(const ptr_base&) = delete;
-
-public:
-    typedef std::set<const shared_ptr_base *> ref_set_t;
-    void show_refs(std::ostream&, bool self=true, bool weak=false) const;
-    void spy_refs(ref_set_t&) const;
-};
-
-class epicsShareClass weak_ptr_base : public ptr_base {
-protected:
-    weak_ptr_base() {}
-    weak_ptr_base(const track_t& track) :ptr_base(track) {}
-};
-
-class epicsShareClass shared_ptr_base : public ptr_base {
-protected:
-    shared_ptr_base() noexcept
-#ifndef EXCEPT_USE_NONE
-        :m_stack(), m_depth(0)
-#endif
-    {}
-    shared_ptr_base(const track_t& track) :ptr_base(track)
-  #ifndef EXCEPT_USE_NONE
-      ,m_stack(), m_depth(0)
-  #endif
-    {}
-    ~shared_ptr_base() {track_clear();}
-
-    // add ourselves to tracker
-    void track_new();
-    // create new tracker if ptr!=nullptr, otherwise clear
-    void track_new(void* ptr);
-    // copy tracker and add ourself
-    void track_assign(const shared_ptr_base& o);
-    void track_clear();
-    void swap(shared_ptr_base& o);
-    void snap_stack();
-
-#ifndef EXCEPT_USE_NONE
-    void *m_stack[EXCEPT_DEPTH];
-    int m_depth; // always <= EXCEPT_DEPTH
-#endif
-
-public:
-    void show_stack(std::ostream&) const;
-};
-
-
-
-template<typename T>
-class shared_ptr;
-template<typename T>
-class weak_ptr;
-template<class Base>
-class enable_shared_from_this;
-
-template<typename Store, typename Actual>
-inline void
-do_enable_shared_from_this(const shared_ptr<Store>& dest,
-                            enable_shared_from_this<Actual>* self
-                            );
-
-template<typename T>
-inline void
-do_enable_shared_from_this(const shared_ptr<T>&, ...) {}
-
-template<typename T>
-class shared_ptr : public shared_ptr_base {
-    typedef ::std::shared_ptr<T> real_type;
-
-    real_type real;
-
-    template<typename A>
-    friend class shared_ptr;
-    template<typename A>
-    friend class weak_ptr;
-
-    // ctor for casts
-    shared_ptr(const real_type& r, const ptr_base::track_t& t)
-        :shared_ptr_base(t), real(r)
-    {track_new();}
-public:
-    typedef typename real_type::element_type element_type;
-    typedef weak_ptr<T> weak_type;
-
-    // new NULL
-    shared_ptr() noexcept {}
-    // copy existing same type
-    shared_ptr(const shared_ptr& o) :shared_ptr_base(o.track), real(o.real) {track_new();}
-    // copy existing of implicitly castable type
-    template<typename A>
-    shared_ptr(const shared_ptr<A>& o) :shared_ptr_base(o.track), real(o.real) {track_new();}
-
-    // construct around new pointer
-    template<typename A, class ... Args>
-    explicit shared_ptr(A* a, Args ... args) : shared_ptr_base(), real(a, args...) {
-        track_new(a);
-        do_enable_shared_from_this(*this, a);
-    }
-
-    // make strong ref from weak
-    template<typename A>
-    shared_ptr(const weak_ptr<A>& o) :shared_ptr_base(o.track), real(o.real) {track_new();}
-
-    // takeover from unique_ptr
-    template<typename A>
-    shared_ptr(std::unique_ptr<A>&& a) : shared_ptr_base(), real(a.release()) {track_new();}
-
-    ~shared_ptr() {}
-
-    shared_ptr& operator=(const shared_ptr& o) {
-        if(this!=&o) {
-            real = o.real;
-            track_assign(o);
-        }
-        return *this;
-    }
-    template<typename A>
-    shared_ptr& operator=(const shared_ptr<A>& o) {
-        if(get()!=o.get()) {
-            real = o.real;
-            track_assign(o);
-        }
-        return *this;
-    }
-
-    void reset() noexcept { real.reset(); track_clear(); }
-    template<typename A, class ... Args>
-    void reset(A* a, Args ... args)
-    {
-        real.reset(a, args...);
-        track_new(a);
-        do_enable_shared_from_this(*this, a);
-    }
-    void swap(shared_ptr &o) noexcept
-    {
-        if(this!=&o) {
-            real.swap(o.real);
-            shared_ptr_base::swap(o);
-        }
-    }
-
-    // proxy remaining to underlying shared_ptr
-
-    T* get() const noexcept { return real.get(); }
-    typename std::add_lvalue_reference<T>::type operator*() const noexcept { return *real; }
-    T* operator->() const noexcept { return real.get(); }
-    long use_count() const noexcept { return real.use_count(); }
-    bool unique() const noexcept { return real.unique(); }
-    explicit operator bool() const noexcept { return bool(real); }
-
-    bool operator==(const shared_ptr<T>& o) const { return real==o.real; }
-    bool operator!=(const shared_ptr<T>& o) const { return real!=o.real; }
-    bool operator<(const shared_ptr<T>& o) const { return real<o.real; }
-
-    template<typename A>
-    bool owner_before(const shared_ptr<A>& o) { return real.owner_before(o); }
-    template<typename A>
-    bool owner_before(const weak_ptr<A>& o) { return real.owner_before(o); }
-
-    template<typename TO, typename FROM>
-    friend
-    shared_ptr<TO> static_pointer_cast(const shared_ptr<FROM>& src);
-    template<typename TO, typename FROM>
-    friend
-    shared_ptr<TO> const_pointer_cast(const shared_ptr<FROM>& src);
-    template<typename TO, typename FROM>
-    friend
-    shared_ptr<TO> dynamic_pointer_cast(const shared_ptr<FROM>& src);
-    template<typename Store, typename Actual>
-    friend void
-    do_enable_shared_from_this(const shared_ptr<Store>& dest,
-                                enable_shared_from_this<Actual>* self
-                                );
-};
-
-template<typename TO, typename FROM>
-shared_ptr<TO> static_pointer_cast(const shared_ptr<FROM>& src) {
-    return shared_ptr<TO>(std::static_pointer_cast<TO>(src.real), src.track);
-}
-
-template<typename TO, typename FROM>
-shared_ptr<TO> const_pointer_cast(const shared_ptr<FROM>& src) {
-    return shared_ptr<TO>(std::const_pointer_cast<TO>(src.real), src.track);
-}
-
-template<typename TO, typename FROM>
-shared_ptr<TO> dynamic_pointer_cast(const shared_ptr<FROM>& src) {
-    return shared_ptr<TO>(std::dynamic_pointer_cast<TO>(src.real), src.track);
-}
-
-template<typename T>
-class weak_ptr : public weak_ptr_base {
-    typedef ::std::weak_ptr<T> real_type;
-
-    real_type real;
-
-    template<typename A>
-    friend class shared_ptr;
-    template<typename A>
-    friend class weak_ptr;
-
-public:
-    typedef typename real_type::element_type element_type;
-    typedef weak_ptr<T> weak_type;
-
-    // new NULL
-    weak_ptr() noexcept {}
-    // copy existing same type
-    weak_ptr(const weak_ptr& o) :weak_ptr_base(o.track), real(o.real) {}
-    // copy existing of similar type
-    template<typename A>
-    weak_ptr(const weak_ptr<A>& o) :weak_ptr_base(o.track), real(o.real) {}
-
-    // create week ref from strong ref
-    template<typename A>
-    weak_ptr(const shared_ptr<A>& o) :weak_ptr_base(o.track), real(o.real) {}
-
-    ~weak_ptr() {}
-
-    weak_ptr& operator=(const weak_ptr& o) {
-        if(this!=&o) {
-            real = o.real;
-            track = o.track;
-        }
-        return *this;
-    }
-    template<typename A>
-    weak_ptr& operator=(const shared_ptr<A>& o) {
-        real = o.real;
-        track = o.track;
-        return *this;
-    }
-
-    shared_ptr<T> lock() const noexcept { return shared_ptr<T>(real.lock(), track); }
-    void reset() noexcept { track.reset(); real.reset(); }
-
-    long use_count() const noexcept { return real.use_count(); }
-    bool unique() const noexcept { return real.unique(); }
-};
-
-template<class Base>
-class enable_shared_from_this {
-    mutable weak_ptr<Base> xxInternalSelf;
-
-    template<typename Store, typename Actual>
-    friend
-    void
-    do_enable_shared_from_this(const shared_ptr<Store>& dest,
-                                enable_shared_from_this<Actual>* self
-                                );
-public:
-    shared_ptr<Base> shared_from_this() const {
-        return shared_ptr<Base>(xxInternalSelf);
-    }
-};
-
-template<typename Store, typename Actual>
-inline void
-do_enable_shared_from_this(const shared_ptr<Store>& dest,
-                            enable_shared_from_this<Actual>* self
-                            )
-{
-    shared_ptr<Actual> actual(dynamic_pointer_cast<Actual>(dest));
-    if(!actual)
-        throw std::logic_error("epics::debug::enabled_shared_from_this fails");
-    self->xxInternalSelf = actual;
-}
-
-}} // namespace epics::debug
-
-template<typename T>
-inline std::ostream& operator<<(std::ostream& strm, const epics::debug::shared_ptr<T>& ptr)
-{
-    strm<<ptr.get();
-    return strm;
-}
-
-#endif // DEBUGPTR_H

src/misc/pv/destroyable.h

@@ -0,0 +1,40 @@
+/* destroyable.h */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mse
+ */
+#ifndef DESTROYABLE_H
+#define DESTROYABLE_H
+
+#include <pv/sharedPtr.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvData { 
+
+
+        /**
+         * @brief Instance declaring destroy method.
+         * 
+         * @author mse
+         */
+        class epicsShareClass Destroyable {
+            public:
+            POINTER_DEFINITIONS(Destroyable);
+            /**
+             * Destroy this instance.
+             */
+            virtual void destroy() = 0;
+            
+            protected:
+            /**
+             * Do not allow delete on this instance and derived classes, destroy() must be used instead.
+             */ 
+            virtual ~Destroyable() {};
+        };
+
+}}
+#endif  /* DESTROYABLE_H */

src/misc/pv/epicsException.h

@@ -33,6 +33,10 @@
 #ifndef EPICSEXCEPTION_H_
 #define EPICSEXCEPTION_H_
 
+#if defined(_WIN32) && !defined(NOMINMAX)
+#define NOMINMAX
+#endif
+
 #include <stdexcept>
 #include <string>
 #include <cstdio>
@@ -177,7 +181,7 @@ do { \
 
 #define PRINT_EXCEPTION(EI) PRINT_EXCEPTION2(EI,stderr)
 
-#if !defined(__GNUC__) || __GNUC__ < 4
+#ifndef __GNUC__
 #  define SHOW_EXCEPTION(EI) ::epics::pvData::detail::showException(EI)
 #else
 #  define SHOW_EXCEPTION(EI) \

src/misc/pv/executor.h

@@ -0,0 +1,90 @@
+/* executor.h */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#ifndef EXECUTOR_H
+#define EXECUTOR_H
+
+#include <memory>
+
+#include <pv/pvType.h>
+#include <pv/lock.h>
+#include <pv/event.h>
+#include <pv/thread.h>
+#include <pv/sharedPtr.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvData { 
+
+class Command;
+class Executor;
+typedef std::tr1::shared_ptr<Command> CommandPtr;
+typedef std::tr1::shared_ptr<Executor> ExecutorPtr;
+
+/**
+ * @brief A command to be called by Executor
+ *
+ */
+class epicsShareClass Command {
+public:
+    POINTER_DEFINITIONS(Command);
+    /**
+     * 
+     * Destructor
+     */
+    virtual ~Command(){}
+    /**
+     * 
+     * The command that is executed.
+     */
+    virtual void command() = 0;
+private:
+    CommandPtr next;
+    friend class Executor;
+};
+
+/**
+ * @brief A class that executes commands.
+ *
+ */
+class epicsShareClass Executor : public Runnable{
+public:
+    POINTER_DEFINITIONS(Executor);
+    /**
+     * Constructor
+     *
+     * @param threadName name for the executor thread.
+     * @param priority The thread priority.
+     */
+    Executor(std::string const & threadName,ThreadPriority priority);
+    /**
+     * Destructor
+     */
+    ~Executor();
+    /**
+     * 
+     * Request to execute a command.
+     * @param command A shared pointer to the command instance.
+     */
+    void execute(CommandPtr const &command);
+    /**
+     * 
+     * The thread run method.
+     */
+    virtual void run();
+private:
+    CommandPtr head;
+    CommandPtr tail;
+    epics::pvData::Mutex mutex;
+    epics::pvData::Event moreWork;
+    epics::pvData::Event stopped;
+    epics::pvData::Thread thread;
+};
+
+}}
+#endif  /* EXECUTOR_H */

src/misc/pv/localStaticLock.h

@@ -9,13 +9,11 @@
 #ifndef LOCALSTATICLOCK_H
 #define LOCALSTATICLOCK_H
 
-#include <compilerDependencies.h>
-
 #include <pv/lock.h>
 
 #include <shareLib.h>
 
-epicsShareExtern epics::pvData::Mutex& getLocalStaticInitMutex() EPICS_DEPRECATED;
+epicsShareExtern epics::pvData::Mutex& getLocalStaticInitMutex();
 
 #if defined(__GNUC__) && __GNUC__ >= 4
 // noop

src/misc/pv/lock.h

@@ -33,8 +33,7 @@ typedef epicsMutex Mutex;
  * This is based on item 14 of 
  *  * Effective C++, Third Edition, Scott Meyers
  */
-class Lock {
-    EPICS_NOT_COPYABLE(Lock)
+class epicsShareClass Lock : private NoDefaultMethods {
 public:
     /**
      * Constructor

src/misc/pv/messageQueue.h

@@ -0,0 +1,128 @@
+/* messageQueue.h */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#ifndef MESSAGEQUEUE_H
+#define MESSAGEQUEUE_H
+#include <memory>
+#include <vector>
+#include <cstddef>
+#include <stdexcept>
+
+#include <pv/pvType.h>
+#include <pv/requester.h>
+#include <pv/queue.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvData { 
+
+class MessageNode;
+class MessageQueue;
+typedef std::tr1::shared_ptr<MessageNode> MessageNodePtr;
+typedef std::vector<MessageNodePtr> MessageNodePtrArray;
+typedef std::tr1::shared_ptr<MessageQueue> MessageQueuePtr;
+
+/**
+ * @brief A node that can be put on a MessageQueue.
+ *
+ */
+class epicsShareClass MessageNode {
+public:
+    /**
+     * Constructor
+     */
+    MessageNode();
+    /**
+     * 
+     * Get the message value.
+     * @return The message value.
+     */
+    std::string getMessage() const;
+    /** 
+     * Get the message type.
+     * @return The message type which is defined in Requester.
+     */
+    MessageType getMessageType() const;
+private:
+    std::string message;
+    MessageType messageType;
+    friend class MessageQueue;
+};
+
+/**
+ * @brief A bounded queue for messages.
+ *
+ *
+ */
+class epicsShareClass MessageQueue : public Queue<MessageNode> {
+public:
+    POINTER_DEFINITIONS(MessageQueue);
+    /**
+     * Factory method to create a MessageQueue.
+     * @param size The number of MessageNodes in the queue.
+     * @return shared_ptr to MessageQueue.
+     */
+    static MessageQueuePtr create(int size);
+    /**
+     * Constructor
+     * @param nodeArray an array of shared_ptr to MessageNodes,
+     */
+    MessageQueue(MessageNodePtrArray &nodeArray);
+    /**
+     * Destructor
+     */
+    virtual ~MessageQueue();
+    /**
+     * get the next MessageNode of the queue.
+     * @return A shared_ptr to the MessageNode.
+     * This will be a null pointer if queue is empty.
+     * If get is successful then release for this MessageNode
+     * must be called before another get can be issued.
+     */
+    MessageNodePtr &get();
+    /**
+     * Release the MessageNode that was returned by the previous call to get.
+     */
+    void release();
+    /**
+     * 
+     * put a message into the message queue
+     * @param message The message string.
+     * @param messageType The message type as defined in Requester,
+     * @param replaceLast If true and queue is full then replace.
+     * @return (false,true) if a message (was not, was) put in queiue.
+     */
+    bool put(std::string message,MessageType messageType,bool replaceLast);
+    /**
+     * Is queue empty?
+     * @return (false,true) if (is not, is) empty.
+     */
+    bool isEmpty() ;
+    /**
+     * Is queue full?
+     * @return (false,true) if (is not, is) full.
+     */
+    bool isFull() ;
+    /**
+     * 
+     * Clear number of times queue was overrun and return the number
+     * of times the queue was overrun.
+     */
+    int getClearOverrun();
+private:
+    MessageNodePtr nullNode;
+    MessageNodePtr lastGet;
+    MessageNodePtr lastPut;
+    uint32 overrun;
+};
+
+}}
+#endif  /* MESSAGEQUEUE_H */
+
+
+

src/misc/pv/noDefaultMethods.h

@@ -11,54 +11,30 @@
 
 #include <shareLib.h>
 
-/** @macro EPICS_NOT_COPYABLE(CLASS)
- *  @brief Disable implicit copyable
- *
- * Prevent the default copy constructor and assignment
- * operator from being usable.
- *
- * For >= C++11 explicitly disable.  Attempts to copy/assign will
- * fail to compile.
- *
- * For C++98 make these private, and don't implement them.
- * User code will fail to compile, implementation code will fail to link.
- @code
-    struct MyClass {
-        EPICS_NOT_COPYABLE(MyClass)
-    public:
-        ...
-    };
- @code
- *
- * @note This macro contains 'private:'.
+namespace epics { namespace pvData { 
+/* This is based on Item 6 of 
+ * Effective C++, Third Edition, Scott Meyers
  */
-#if __cplusplus>=201103L
-#  define EPICS_NOT_COPYABLE(CLASS) private: CLASS(const CLASS&) = delete; CLASS& operator=(const CLASS&) = delete;
-#else
-#  define EPICS_NOT_COPYABLE(CLASS) private: CLASS(const CLASS&); CLASS& operator=(const CLASS&);
-#endif
-
-namespace epics { namespace pvData {
 
 /**
  * @brief Base class for not allowing default methods.
  *
  * Note that copy constructor a copy methods are declared private.
- *
- * @deprecated Deprecated in favor of EPICS_NOT_COPYABLE() pvDataCPP 7.0.0
  */
-class NoDefaultMethods {
-public:
-    NoDefaultMethods() {}
-private:
-#if __cplusplus>=201103L
-    NoDefaultMethods(const NoDefaultMethods&) = delete;
-    NoDefaultMethods & operator=(const NoDefaultMethods &) = delete;
-#else
+class epicsShareClass NoDefaultMethods {
+protected:
+    /**
+     * Constructor
+     */
+    NoDefaultMethods(){};
+    /**
+     * Destructor
+     */
+    ~NoDefaultMethods(){}
+    private:
     // do not implement
     NoDefaultMethods(const NoDefaultMethods&);
     NoDefaultMethods & operator=(const NoDefaultMethods &);
-#endif
 };
 
 }}

src/misc/pv/pvUnitTest.h

@@ -1,188 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-#ifndef PVUNITTEST_H
-#define PVUNITTEST_H
-
-#include <sstream>
-#include <typeinfo>
-
-#include <epicsUnitTest.h>
-
-#include <pv/sharedPtr.h>
-#include <pv/epicsException.h>
-#include <pv/pvData.h>
-
-namespace detail {
-
-template<class C, void (C::*M)()>
-void test_method(const char *kname, const char *mname)
-{
-    try {
-        testDiag("------- %s::%s --------", kname, mname);
-        C inst;
-        (inst.*M)();
-    } catch(std::exception& e) {
-        PRINT_EXCEPTION(e);
-        testAbort("unexpected exception: %s", e.what());
-    }
-}
-
-class epicsShareClass testPassx
-{
-    std::ostringstream strm;
-    const bool dotest, pass;
-    bool alive;
-public:
-    testPassx() :dotest(false), pass(false), alive(true) {}
-    explicit testPassx(bool r) :dotest(true), pass(r), alive(true) {}
-    ~testPassx();
-    template<typename T>
-    inline testPassx& operator<<(const T& v) {
-        strm<<v;
-        return *this;
-    }
-
-    // allow testPassx to be returned
-    // move ctor masquerading as copy ctor
-    testPassx(testPassx& o);
-private:
-    testPassx& operator=(const testPassx&);
-};
-
-template<typename LHS, typename RHS>
-inline testPassx testEqualx(const char *nLHS, const char *nRHS, const LHS& l, const RHS& r)
-{
-    return testPassx(l==r)<<nLHS<<" ("<<l<<") == "<<nRHS<<" ("<<r<<")";
-}
-
-template<typename LHS, typename RHS>
-inline testPassx testNotEqualx(const char *nLHS, const char *nRHS, const LHS& l, const RHS& r)
-{
-    return testPassx(l!=r)<<nLHS<<" ("<<l<<") != "<<nRHS<<" ("<<r<<")";
-}
-
-}//namespace detail
-
-/** @defgroup testhelpers Unit testing helpers
- *
- * Helper functions for writing unit tests.
- *
- @include unittest.cpp
- *
- * @{
- */
-
-/** Run a class method as a test.
- *
- * Each invocation of TEST_METHOD() constructs a new instance of 'klass' on the stack.
- * Thus constructor and destructor can be used for common test setup and tear down.
- @code
- namespace { // anon
-     struct MyTest {
-           MyTest() { } // setup
-           ~MyTest() { } // tear down
-           void test1() {}
-           void test2() {}
-     };
- } // namespace anon
- MAIN(somename) {
-       testPlan(0);
-       TEST_METHOD(MyTest, test1)
-       TEST_METHOD(MyTest, test2)
-       return testDone();
- }
- @endcode
- */
-#define TEST_METHOD(klass, method) ::detail::test_method<klass, &klass::method>(#klass, #method)
-
-/** Compare equality.  print left and right hand values and expression strings
- *
- @code
- int x=5;
- testEqual(x, 5);
- // prints "ok 1 - x (5) == 5 (5)\n"
- testEqual(x, 6)<<" oops";
- // prints "not ok 1 - x (5) == 6 (6) oops\n"
- @endcode
- */
-#define testEqual(LHS, RHS) ::detail::testEqualx(#LHS, #RHS, LHS, RHS)
-
-#define testNotEqual(LHS, RHS) ::detail::testNotEqualx(#LHS, #RHS, LHS, RHS)
-
-/** Pass/fail from boolean
- *
- @code
- bool y=true;
- testTrue(y);
- // prints "ok 1 - y\n"
- testTrue(!y)<<" oops";
- // prints "not ok 1 - !y oops\n"
- @endcode
- */
-#define testTrue(B) ::detail::testPassx(!!(B))<<#B
-
-/** Test that a given block throws an exception
- *
- @code
- testThrows(std::runtime_error, somefunc(5))
- @endcode
- */
-#define testThrows(EXC, CODE) try{ CODE; testFail("unexpected success of " #CODE); }catch(EXC& e){testPass("catch expected exception: %s", e.what());}
-
-/** Print test output w/o testing
- *
- @code
- testShow()<<"Foo";
- @endcode
- */
-#define testShow() ::detail::testPassx()
-
-/** Compare value of PVStructure field
- *
- @code
- PVStructurePtr x(.....);
- testFieldEqual<epics::pvData::PVInt>(x, "alarm.severity", 1);
- @endcode
- */
-template<typename PVD>
-::detail::testPassx
-testFieldEqual(const std::tr1::shared_ptr<const epics::pvData::PVStructure>& val, const char *name, typename PVD::value_type expect)
-{
-    if(!val) {
-        return ::detail::testPassx(false)<<" null structure pointer";
-    }
-    typename PVD::const_shared_pointer fval(val->getSubField<PVD>(name));
-    if(!fval) {
-        epics::pvData::PVUnion::const_shared_pointer uval(val->getSubField<epics::pvData::PVUnion>(name));
-        if(uval)
-            fval = uval->get<PVD>();
-    }
-    if(!fval) {
-        return ::detail::testPassx(false)<<" field '"<<name<<"' with type "<<typeid(PVD).name()<<" does not exist";
-    } else {
-        typename PVD::value_type actual(fval->get());
-        return ::detail::testPassx(actual==expect)<<name<<" ("<<actual<<") == "<<expect;
-    }
-}
-
-template<typename PVD>
-::detail::testPassx
-testFieldEqual(const std::tr1::shared_ptr<const epics::pvData::PVStructure>& val, const char *name, typename PVD::const_svector expect)
-{
-    if(!val) {
-        return ::detail::testPassx(false)<<" null structure pointer";
-    }
-    typename PVD::const_shared_pointer fval(val->getSubField<PVD>(name));
-    if(!fval) {
-        return ::detail::testPassx(false)<<" field '"<<name<<"' with type "<<typeid(PVD).name()<<" does not exist";
-    } else {
-        typename PVD::const_svector actual(fval->view());
-        return ::detail::testPassx(actual==expect)<<name<<" ("<<actual<<") == "<<expect;
-    }
-}
-
-/** @} */
-
-#endif // PVUNITTEST_H

src/misc/pv/queue.h

@@ -0,0 +1,183 @@
+/* queue.h */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#ifndef QUEUE_H
+#define QUEUE_H
+
+#include <vector>
+#include <cstddef>
+#include <stdexcept>
+
+#include <pv/sharedPtr.h>
+
+namespace epics { namespace pvData { 
+
+/**
+ * @brief Template class for a bounded queue.
+ *
+ * An instance can make a queueElement be any class desired
+ * but must create a std::vector of shared_ptr to queueElements.
+ */
+template <typename T>
+class Queue
+{
+public:
+    POINTER_DEFINITIONS(Queue);
+    typedef std::tr1::shared_ptr<T> queueElementPtr;
+    typedef std::vector<queueElementPtr> queueElementPtrArray;
+    /**
+     * Constructor
+     * @param elementArray The vector of shared_ptr to queue elements.
+     */
+    Queue(queueElementPtrArray & elementArray);
+    /**
+     * Destructor
+     */
+    virtual ~Queue();
+    /**
+     * Clear the queue.
+     */
+    void clear();
+    /** 
+     * get the capacity of the queue, i. e. number of queue elements,
+     * @return The capacity.
+     */
+    int capacity();
+    /**
+     * Get the number of free elements in the queue.
+     * @return The number.
+     */
+    int getNumberFree();
+    /**
+     * Get the number of used elements in the queue.
+     * This is the number that have been setUsed but not released.
+     * @return The number.
+     */
+    int getNumberUsed();
+    /**
+     * Get the next free element.
+     * @return a shared_ptr to the queue element.
+     * This is null if queue was full.
+     */
+    queueElementPtr & getFree();
+    /**
+     * Set the element returned by getFree as used.
+     * Until this is called getUsed will not return it.
+     * @param element The element. It must be the element returned
+     * by the most recent call to getUsed.
+     */
+    void setUsed(queueElementPtr const &element);
+    /**
+     * Get the oldest used element;
+     * @return a shared_ptr to the queue element.
+     * This is null if no used element is available.`
+     */
+    queueElementPtr & getUsed();
+    /**
+     * Release the element obtained by the most recent call to getUsed.
+     * @param element The element.
+     */
+    void releaseUsed(queueElementPtr const &element);
+private:
+    queueElementPtr nullElement;
+    queueElementPtrArray elements;
+    // TODO use size_t instead
+    int size;
+    int numberFree;
+    int numberUsed;
+    int nextGetFree;
+    int nextSetUsed;
+    int nextGetUsed;
+    int nextReleaseUsed;
+};
+
+template <typename T>
+Queue<T>::Queue(std::vector<queueElementPtr> &xxx)
+: size(static_cast<int>(xxx.size())),
+  numberFree(size),
+  numberUsed(0),
+  nextGetFree(0),
+  nextSetUsed(0),
+  nextGetUsed(0),
+  nextReleaseUsed(0)
+{
+     elements.swap(xxx);
+}
+
+template <typename T>
+Queue<T>::~Queue(){}
+
+template <typename T>
+int Queue<T>::capacity(){return size;}
+
+template <typename T>
+int Queue<T>::getNumberFree(){return numberFree;}
+
+template <typename T>
+int Queue<T>::getNumberUsed(){return numberUsed;}
+
+template <typename T>
+void Queue<T>::clear()
+{
+    numberFree = size;
+    numberUsed = 0;
+    nextGetFree = 0;
+    nextSetUsed = 0;
+    nextGetUsed = 0;
+    nextReleaseUsed = 0;
+}
+
+template <typename T>
+std::tr1::shared_ptr<T> & Queue<T>::getFree()
+{
+    if(numberFree==0) return nullElement;
+    numberFree--;
+    int ind = nextGetFree;
+    std::tr1::shared_ptr<T> queueElement = elements[nextGetFree++];
+    if(nextGetFree>=size) nextGetFree = 0;
+    return elements[ind];
+}
+
+template <typename T>
+void Queue<T>::setUsed(std::tr1::shared_ptr<T> const &element)
+{
+   if(element!=elements[nextSetUsed++]) {
+        throw std::logic_error("not correct queueElement");
+    }
+    numberUsed++;
+    if(nextSetUsed>=size) nextSetUsed = 0;
+}
+
+template <typename T>
+std::tr1::shared_ptr<T> & Queue<T>::getUsed()
+{
+    if(numberUsed==0) return nullElement;
+    int ind = nextGetUsed;
+    std::tr1::shared_ptr<T> queueElement = elements[nextGetUsed++];
+    if(nextGetUsed>=size) nextGetUsed = 0;
+    return elements[ind];
+}
+
+template <typename T>
+void Queue<T>::releaseUsed(std::tr1::shared_ptr<T> const &element)
+{
+    if(element!=elements[nextReleaseUsed++]) {
+        throw std::logic_error(
+           "not queueElement returned by last call to getUsed");
+    }
+    if(nextReleaseUsed>=size) nextReleaseUsed = 0;
+    numberUsed--;
+    numberFree++;
+}
+
+
+}}
+#endif  /* QUEUE_H */
+
+
+

src/misc/pv/reftrack.h

@@ -1,173 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-#ifndef REFTRACK_H
-#define REFTRACK_H
-
-/** @page pvd_reftrack RefTrack
- *
- * reftrack.h is a utility for listing, finding, and reading global atomic counters.
- * By convention used to expose object instance counters as a way of detecting (slow)
- * reference/resource leaks before they cause problems.
- *
- * cf. the IOC shell commands "refshow", "refsave", and "refdiff".
- *
- * Example usage:
- *
- * @code
- *   // my header.h
- *   struct MyClass {
- *      MyClass();
- *      ~MyClass();
- *      static size_t num_instances;
- *      ...
- *   };
- *   ...
- *   // my src.cpp
- *   size_t MyClass::num_instances;
- *   MyClass::MyClass() {
- *      REFTRACE_INCREMENT(num_instances);
- *   }
- *   MyClass::~MyClass() {
- *      REFTRACE_DECREMENT(num_instances);
- *   }
- *   // in some IOC registrar or global ctor
- *   registerRefCounter("MyClass", &MyClass::num_instances);
- * @endcode
- */
-
-#ifdef __cplusplus
-
-#include <map>
-#include <string>
-#include <ostream>
-
-#include <stdlib.h>
-
-#include <epicsVersion.h>
-
-#ifndef VERSION_INT
-#  define VERSION_INT(V,R,M,P) ( ((V)<<24) | ((R)<<16) | ((M)<<8) | (P))
-#endif
-
-#ifndef EPICS_VERSION_INT
-#  define EPICS_VERSION_INT VERSION_INT(EPICS_VERSION, EPICS_REVISION, EPICS_MODIFICATION, EPICS_PATCH_LEVEL)
-#endif
-
-#if EPICS_VERSION_INT>=VERSION_INT(3,15,1,0)
-#  include <epicsAtomic.h>
-#  define REFTRACK_USE_ATOMIC
-#endif
-
-#ifdef REFTRACK_USE_ATOMIC
-#  define REFTRACE_INCREMENT(counter) ::epics::atomic::increment(counter)
-#  define REFTRACE_DECREMENT(counter) ::epics::atomic::decrement(counter)
-#else
-#  define REFTRACE_INCREMENT(counter) do{}while(0)
-#  define REFTRACE_DECREMENT(counter) do{}while(0)
-#endif
-
-#include <shareLib.h>
-
-namespace epics {
-
-//! Register new global reference counter
-epicsShareFunc
-void registerRefCounter(const char *name, const size_t* counter);
-
-//! Remove registration of global reference counter (if dynamically allocated)
-epicsShareFunc
-void unregisterRefCounter(const char *name, const size_t* counter);
-
-//! Fetch current value of single reference counter
-epicsShareFunc
-size_t readRefCounter(const char *name);
-
-//! Represent a snapshot of many reference counters
-class epicsShareClass RefSnapshot
-{
-public:
-    //! A single count
-    struct Count {
-        size_t current;
-        long delta; //!< current - previous
-        Count() :current(0u), delta(0) {}
-        explicit Count(size_t c, long d) :current(c), delta(d) {}
-        bool operator==(const Count& o) const
-        { return current==o.current && delta==o.delta; }
-    };
-
-private:
-    typedef std::map<std::string, Count> cnt_map_t;
-    cnt_map_t counts;
-public:
-    typedef cnt_map_t::const_iterator iterator;
-    typedef cnt_map_t::const_iterator const_iterator;
-
-    /** Fetch values of all reference counters.
-     *
-     * This involves many atomic reads, not a single operation.
-     */
-    void update();
-
-    const Count& operator[](const std::string& name) const;
-
-    iterator begin() const { return counts.begin(); }
-    iterator end() const { return counts.end(); }
-    size_t size() const { return counts.size(); }
-
-    inline void swap(RefSnapshot& o)
-    {
-        counts.swap(o.counts);
-    }
-
-    /** Compute the difference lhs - rhs
-     *
-     * Returned RefSnapshot has Count::current=lhs.current
-     * and Count::delta= lhs.current - rhs.current
-     */
-    RefSnapshot operator-(const RefSnapshot& rhs) const;
-};
-
-//! Print all counters with a non-zero delta
-epicsShareFunc
-std::ostream& operator<<(std::ostream& strm, const RefSnapshot& snap);
-
-//! Helper to run a thread which periodically prints (via show() )
-//! global reference counter deltas.
-class epicsShareClass RefMonitor
-{
-    struct Impl;
-    Impl *impl;
-public:
-    RefMonitor();
-    virtual ~RefMonitor();
-
-    void start(double period=10.0);
-    void stop();
-    bool running() const;
-
-    //! call show() with current snapshot
-    void current();
-protected:
-    //! Default prints to stderr
-    //! @param complete when false show only non-zero delta, when true show non-zero count or delta
-    virtual void show(const RefSnapshot& snap, bool complete=false);
-};
-
-} // namespace epics
-
-extern "C" {
-#endif /* __cplusplus */
-
-/** Fetch and print current snapshot
- * @return NULL or a char* which must be free()'d
- */
-char* epicsRefSnapshotCurrent();
-
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
-
-#endif // REFTRACK_H

src/misc/pv/requester.h

@@ -0,0 +1,71 @@
+/* requester.h */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#ifndef REQUESTER_H
+#define REQUESTER_H
+#include <string>
+
+#include <pv/pvType.h>
+#include <pv/sharedPtr.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvData { 
+
+class Requester;
+typedef std::tr1::shared_ptr<Requester> RequesterPtr;
+
+enum MessageType {
+   infoMessage,warningMessage,errorMessage,fatalErrorMessage
+};
+#define MESSAGE_TYPE_COUNT 4
+
+epicsShareExtern std::string getMessageTypeName(MessageType messageType);
+
+/**
+ *  @brief Callback class for passing messages to a requester.
+ *
+ *  This is used by many other classes and also extended by other classes.
+ *  The request is passed a message and a messageType.
+ *  A message is just a string and a messageType is:
+@code
+enum MessageType {
+   infoMessage,warningMessage,errorMessage,fatalErrorMessage
+};
+@endcode
+ *
+ */
+
+class epicsShareClass Requester {
+public:
+    POINTER_DEFINITIONS(Requester);
+    /**
+     * Destructor
+     */
+    virtual ~Requester(){}
+    /**
+     * The requester must have a name.
+     * @return The requester's name.
+     */
+    virtual std::string getRequesterName() = 0;
+    /**
+     * 
+     * A message for the requester.
+     * @param message The message.
+     * @param messageType The type of message:
+     @code
+     enum MessageType {
+        infoMessage,warningMessage,errorMessage,fatalErrorMessage
+     };
+     @endcode
+     */
+    virtual void message(std::string const & message,MessageType messageType);
+};
+
+}}
+#endif  /* REQUESTER_H */

src/misc/pv/serializeHelper.h

@@ -26,8 +26,7 @@ namespace epics {
          * @brief Serialization helper.
          *
          */
-        class epicsShareClass SerializeHelper {
-            EPICS_NOT_COPYABLE(SerializeHelper)
+        class epicsShareClass SerializeHelper : public NoDefaultMethods {
         public:
 
             /**

src/misc/pv/sharedPtr.h

@@ -9,9 +9,7 @@
 #ifndef SHAREDPTR_H
 #define SHAREDPTR_H
 
-#include <memory> /* for auto_ptr */
-
-/** @file sharedPtr.h
+/*
  * Pulls in the std::tr1 namespace with the following names
  *
  * class shared_ptr
@@ -25,58 +23,12 @@
  * function enable_shared_from_this
  */
 
-/* where should we look? (In decending order of preference)
- *
- * # manual (per source file) selection
- * # c++11 version of <memory>, then alias into tr1
- * # <tr1/memory>
- * # boost version of tr1/memory
- */
+// where should we look?
 
-/* Debugging shared_ptr with debugPtr.h requires >= c++11
- *
- * Define DEBUG_SHARED_PTR globally to cause epics::debug::shared_ptr
- * to be injected as std::tr1::shared_ptr and the macro
- * HAVE_SHOW_REFS will be defined.
- *
- * epics::debug::shared_ptr wraps std::shared_ptr with additional
- * tracking of backwards references.
- * std::shared_ptr::use_count() gives the number of shared_ptr
- * (strong refs) to the referenced object.
- *
- * If use_count()==5 then epics::debug::shared_ptr::show_refs() will print
- * 5 lines of the format
- *
- *   # <addr>: <IP0> <IP1> ...
- *
- * Given the numberic address of each shared_ptr as well as the call stack
- * at the point where it was initialized.
- * Use the 'addr2line' utility to interpret the stack addresses.
- *
- * On linux w/ ASLR it is necessary to turn on static linking to meaningfully
- * interpret call stack addresses.
- * Append "STATIC_BUILD=YES" to configure/CONFIG_SITE
- */
-//#define DEBUG_SHARED_PTR
-
-#if defined(SHARED_FROM_MANUAL)
-// define SHARED_FROM_MANUAL if from some reason it is desirable to manually select
-// which shared_ptr implementation to use
-#elif __cplusplus>=201103L || (defined(_MSC_VER) && (_MSC_VER>=1600)) || defined(_LIBCPP_VERSION)
-// MSVC has been bad about incrementing __cplusplus, even when new features are added.  shared_ptr from MSVC 2010
-// the llvm libc++ doesn't bother with tr1, and puts shared_ptr in std:: even with -std=c++98
-#  define SHARED_FROM_STD
-
-#elif defined(__GNUC__) && __GNUC__>=4 && !defined(vxWorks)
+#if defined(__GNUC__) && __GNUC__>=4 && !defined(vxWorks)
    // GCC >=4.0.0
 #  define SHARED_FROM_TR1
 
-#elif defined(_MSC_VER) && _MSC_VER==1500
-// MSVC 2009  (eg. Visual C++ for Python 2.7)
-// Dinkumware _CPPLIB_VER=505
-// Has std::tr1::shared_ptr in <memory>
-#  define SHARED_TR1_FROM_STD
-
 #elif defined(_MSC_VER) && (_MSC_VER>1500 || defined(_HAS_TR1))
    // MSVC > 2008, or 2008 w/ SP1
 #  define SHARED_FROM_TR1
@@ -85,51 +37,34 @@
 #  define SHARED_FROM_BOOST
 #endif
 
-// go and get it
+#if defined(_MSC_VER) && (_MSC_VER>=1600)
+// MSVC 2010 has it in <memory>
+#  undef SHARED_FROM_BOOST
+#  undef SHARED_FROM_TR1
+#endif
 
-#if defined(SHARED_FROM_MANUAL)
-// no-op
-#elif defined(SHARED_FROM_STD)
+#if defined(__clang__)
+#  undef SHARED_FROM_BOOST
+#  undef SHARED_FROM_TR1
 
 #include <memory>
 
-#ifndef DEBUG_SHARED_PTR
-
-namespace std {
+// import std classes into std::tr1
+namespace std { 
     namespace tr1 {
-        using ::std::shared_ptr;
-        using ::std::weak_ptr;
-        using ::std::static_pointer_cast;
-        using ::std::dynamic_pointer_cast;
-        using ::std::const_pointer_cast;
-        using ::std::enable_shared_from_this;
-        using ::std::bad_weak_ptr;
+        using std::shared_ptr;
+        using std::weak_ptr;
+        using std::static_pointer_cast;
+        using std::dynamic_pointer_cast;
+        using std::const_pointer_cast;
+        using std::enable_shared_from_this;
     }
 }
+#endif
 
-#else // DEBUG_SHARED_PTR
+// go and get it
 
-#include "debugPtr.h"
-
-namespace std {
-    namespace tr1 {
-        using ::epics::debug::shared_ptr;
-        using ::epics::debug::weak_ptr;
-        using ::epics::debug::static_pointer_cast;
-        using ::epics::debug::dynamic_pointer_cast;
-        using ::epics::debug::const_pointer_cast;
-        using ::epics::debug::enable_shared_from_this;
-        using ::std::bad_weak_ptr;
-    }
-}
-
-
-#endif // DEBUG_SHARED_PTR
-
-#elif defined(SHARED_TR1_FROM_STD)
-#  include <memory>
-
-#elif defined(SHARED_FROM_TR1)
+#if defined(SHARED_FROM_TR1)
 #  include <tr1/memory>
 
 #elif defined(SHARED_FROM_BOOST)
@@ -142,15 +77,12 @@ namespace std {
 #  include <boost/tr1/memory.hpp>
 
 #else
-#  error No shared_ptr selection
+   // eventually...
+#  include <memory>
 #endif
 
 // cleanup
 
-#ifdef SHARED_FROM_STD
-#  undef SHARED_FROM_STD
-#endif
-
 #ifdef SHARED_FROM_TR1
 #  undef SHARED_FROM_TR1
 #endif
@@ -159,78 +91,10 @@ namespace std {
 #  undef SHARED_FROM_BOOST
 #endif
 
-namespace detail {
-template<typename T>
-struct ref_shower {
-    const std::tr1::shared_ptr<T>& ptr;
-    bool self, weak;
-    ref_shower(const std::tr1::shared_ptr<T>& ptr, bool self, bool weak) :ptr(ptr),self(self),weak(weak) {}
-};
-}
-
-/** Print a list (one per line) of shared_ptr which refer to the same object
- *
- * @param ptr Use the object pointed to by this shared_ptr
- * @param self include or omit a line for this shared_ptr
- * @param weak include a line for each weak_ptr (not implemented)
- @code
-   shared_ptr<int> x;
-   std::cout << show_referrers(x);
- @endcode
- */
-template<typename T>
-inline ::detail::ref_shower<T> show_referrers(const std::tr1::shared_ptr<T>& ptr, bool self=true, bool weak=false)
-{
-    return ::detail::ref_shower<T>(ptr, self, weak);
-}
-
-namespace std{
-template<typename T>
-inline std::ostream& operator<<(std::ostream& strm, const ::detail::ref_shower<T>& refs)
-{
-#ifdef HAVE_SHOW_REFS
-    refs.ptr.show_refs(strm, refs.self, refs.weak);
-#endif // HAVE_SHOW_REFS
-    return strm;
-}
-}//namespace std
-
 #define POINTER_DEFINITIONS(clazz) \
     typedef std::tr1::shared_ptr<clazz> shared_pointer; \
     typedef std::tr1::shared_ptr<const clazz> const_shared_pointer; \
     typedef std::tr1::weak_ptr<clazz> weak_pointer; \
     typedef std::tr1::weak_ptr<const clazz> const_weak_pointer
 
-namespace epics{
-/** A semi-hack to help with migration from std::auto_ptr to std::unique_ptr,
- * and avoid copious deprecation warning spam
- * which may be hiding legitimate issues.
- *
- * Provides epics::auto_ptr<T> and epics::swap()
- *
- * epics::auto_ptr<T> is std::auto_ptr<T> for c++98
- * and std::unique_ptr<T> for >= c++11.
- *
- * epics::swap() is the only supported operation.
- * copy/assignment/return are not supported
- * (use auto_ptr or unique_ptr explicitly).
- */
-#if __cplusplus>=201103L
-template<typename T>
-using auto_ptr = std::unique_ptr<T>;
-template<typename T>
-static inline void swap(auto_ptr<T>& lhs, auto_ptr<T>& rhs) {
-    lhs.swap(rhs);
-}
-#else
-using std::auto_ptr;
-template<typename T>
-static inline void swap(auto_ptr<T>& lhs, auto_ptr<T>& rhs) {
-    auto_ptr<T> temp(lhs);
-    lhs = rhs;
-    rhs = temp;
-}
-#endif
-}
-
 #endif // SHAREDPTR_H

src/misc/pv/sharedVector.h

@@ -6,15 +6,15 @@
 #ifndef SHAREDVECTOR_H
 #define SHAREDVECTOR_H
 
+#if defined(_WIN32) && !defined(NOMINMAX)
+#define NOMINMAX
+#endif
+
 #include <ostream>
 #include <algorithm>
 #include <stdexcept>
 #include <iterator>
 
-#if __cplusplus>=201103L
-#  include <initializer_list>
-#endif
-
 #include <cassert>
 
 #include "pv/sharedPtr.h"
@@ -70,24 +70,18 @@ namespace detail {
          */
 
     public:
-#if __cplusplus>=201103L
-        //! @brief Empty vector (not very interesting)
-        constexpr shared_vector_base() noexcept
-            :m_sdata(), m_offset(0), m_count(0), m_total(0)
-        {}
-#else
+
         //! @brief Empty vector (not very interesting)
         shared_vector_base()
             :m_sdata(), m_offset(0), m_count(0), m_total(0)
         {}
-#endif
 
     protected:
         // helper for constructors
         // Ensure that offset and size are zero when we are constructed with NULL
         void _null_input()
         {
-            if(!m_sdata) {
+            if(!m_sdata.get()) {
                 m_offset = m_total = m_count = 0;
             } else {
                 // ensure we won't have integer overflows later
@@ -96,12 +90,19 @@ namespace detail {
         }
     public:
 
+#ifdef _WIN32
         template<typename A>
         shared_vector_base(A* v, size_t o, size_t c)
             :m_sdata(v, detail::default_array_deleter<A*>())
             ,m_offset(o), m_count(c), m_total(c)
         {_null_input();}
-
+#else
+        template<typename A>
+        shared_vector_base(A v, size_t o, size_t c)
+            :m_sdata(v, detail::default_array_deleter<A>())
+            ,m_offset(o), m_count(c), m_total(c)
+        {_null_input();}
+#endif
         shared_vector_base(const std::tr1::shared_ptr<E>& d, size_t o, size_t c)
             :m_sdata(d), m_offset(o), m_count(c), m_total(c)
         {_null_input();}
@@ -117,17 +118,6 @@ namespace detail {
             ,m_count(O.m_count), m_total(O.m_total)
         {}
 
-#if __cplusplus >= 201103L
-        shared_vector_base(shared_vector_base &&O)
-            :m_sdata(std::move(O.m_sdata))
-            ,m_offset(O.m_offset)
-            ,m_count(O.m_count)
-            ,m_total(O.m_total)
-        {
-            O.clear();
-        }
-#endif
-
     protected:
         typedef typename meta::strip_const<E>::type _E_non_const;
     public:
@@ -142,11 +132,7 @@ namespace detail {
         {
             if(!O.unique())
                 throw std::runtime_error("Can't freeze non-unique vector");
-#if __cplusplus >= 201103L
-            m_sdata = std::move(O.m_sdata);
-#else
             m_sdata = O.m_sdata;
-#endif
             O.clear();
         }
 
@@ -160,11 +146,7 @@ namespace detail {
             ,m_total(O.m_total)
         {
             O.make_unique();
-#if __cplusplus >= 201103L
-            m_sdata = std::move(std::tr1::const_pointer_cast<E>(O.m_sdata));
-#else
             m_sdata = std::tr1::const_pointer_cast<E>(O.m_sdata);
-#endif
             O.clear();
         }
 
@@ -180,21 +162,6 @@ namespace detail {
             return *this;
         }
 
-#if __cplusplus >= 201103L
-        //! @brief Move an existing vector
-        shared_vector_base& operator=(shared_vector_base&& o)
-        {
-            if(&o!=this) {
-                m_sdata=std::move(o.m_sdata);
-                m_offset=o.m_offset;
-                m_count=o.m_count;
-                m_total=o.m_total;
-                o.clear();
-            }
-            return *this;
-        }
-#endif
-
         //! @brief Swap the contents of this vector with another
         void swap(shared_vector_base& o) {
             if(&o!=this) {
@@ -213,12 +180,11 @@ namespace detail {
         }
 
         //! @brief Data is not shared?
-        bool unique() const {return !m_sdata || m_sdata.use_count()<=1;}
+        bool unique() const {return !m_sdata || m_sdata.unique();}
 
 
         //! @brief Number of elements visible through this vector
         size_t size() const{return m_count;}
-        //! @brief shorthand for size()==0
         bool empty() const{return !m_count;}
 
 
@@ -252,9 +218,7 @@ namespace detail {
 
             m_total -= offset;
 
-            if(length > max_count)
-                length = max_count;
-            m_count = length;
+            m_count = std::min(length, max_count);
         }
 
         // Access to members.
@@ -308,22 +272,9 @@ public:
     // allow specialization for all E to be friends
     template<typename E1, class Enable1> friend class shared_vector;
 
-    //! @brief Empty vector (not very interesting)
-#if __cplusplus>=201103L
-    constexpr shared_vector() noexcept :base_t() {}
-#else
-    shared_vector() :base_t() {}
-#endif
 
-#if __cplusplus>=201103L
-    template<typename A>
-    shared_vector(std::initializer_list<A> L)
-        :base_t(new _E_non_const[L.size()], 0, L.size())
-    {
-        _E_non_const *raw = const_cast<_E_non_const*>(data());
-        std::copy(L.begin(), L.end(), raw);
-    }
-#endif
+    //! @brief Empty vector (not very interesting)
+    shared_vector() :base_t() {}
 
     //! @brief Allocate (with new[]) a new vector of size c
     explicit shared_vector(size_t c)
@@ -370,11 +321,6 @@ public:
     //! @brief Copy an existing vector of same type
     shared_vector(const shared_vector& o) :base_t(o) {}
 
-#if __cplusplus>=201103L
-    //! @brief Move an existing vector of same type
-    shared_vector(shared_vector&& o) :base_t(std::move(o)) {}
-#endif
-
     //! @internal
     //! Internal for static_shared_vector_cast
     template<typename FROM>
@@ -396,20 +342,6 @@ public:
         :base_t(O,t)
     {}
 
-    inline shared_vector& operator=(const shared_vector& o)
-    {
-        this->base_t::operator=(o);
-        return *this;
-    }
-
-#if __cplusplus>=201103L
-    inline shared_vector& operator=(shared_vector&& o)
-    {
-        this->base_t::operator=(std::move(o));
-        return *this;
-    }
-#endif
-
     size_t max_size() const{return ((size_t)-1)/sizeof(E);}
 
     size_t capacity() const { return this->m_total; }
@@ -421,16 +353,11 @@ public:
      * does not increase.
      *
      * For notes on copying see docs for make_unique().
-     *
-     * @throws std::bad_alloc if requested allocation can not be made
-     * @throws other exceptions from element copy ctor
      */
     void reserve(size_t i) {
         if(this->unique() && i<=this->m_total)
             return;
-        size_t new_count = this->m_count;
-        if(new_count > i)
-            new_count = i;
+        size_t new_count = std::min(this->m_count, i);
         _E_non_const* temp=new _E_non_const[i];
         try{
             std::copy(begin(), begin()+new_count, temp);
@@ -450,16 +377,13 @@ public:
      * as if make_unique() were called.  This holds even if the size does not change.
      *
      * For notes on copying see docs for make_unique().
-     *
-     * @throws std::bad_alloc if requested allocation can not be made
-     * @throws other exceptions from element copy ctor
      */
     void resize(size_t i) {
         if(i==this->m_count) {
             make_unique();
             return;
         }
-        if(this->m_sdata && this->m_sdata.use_count()==1) {
+        if(this->m_sdata && this->m_sdata.unique()) {
             // we have data and exclusive ownership of it
             if(i<=this->m_total) {
                 // We have room to grow (or shrink)!
@@ -468,18 +392,13 @@ public:
             }
         }
         // must re-allocate :(
-        size_t new_total = this->m_total;
-        if(new_total < i)
-            new_total = i;
+        size_t new_total = std::max(this->m_total, i);
         _E_non_const* temp=new _E_non_const[new_total];
         try{
-            size_t n = this->size();
-            if(n > i)
-                n = i;
             // Copy as much as possible from old,
             // remaining elements are uninitialized.
             std::copy(begin(),
-                      begin()+n,
+                      begin()+std::min(i,this->size()),
                       temp);
             this->m_sdata.reset(temp, detail::default_array_deleter<pointer>());
         }catch(...){
@@ -519,14 +438,10 @@ public:
        }
        assert(original.unique());
      @endcode
-     *
-     * @throws std::bad_alloc if requested allocation can not be made
-     * @throws other exceptions from element copy ctor
      */
     void make_unique() {
         if(this->unique())
             return;
-        // at this point we know that !!m_sdata, so get()!=NULL
         _E_non_const *d = new _E_non_const[this->m_total];
         try {
             std::copy(this->m_sdata.get()+this->m_offset,
@@ -540,27 +455,13 @@ public:
         this->m_offset=0;
     }
 
-private:
-    /* Hack alert.
-     * For reasons of simplicity and efficiency, we want to use raw pointers for iteration.
-     * However, shared_ptr::get() isn't defined when !m_sdata, although practically it gives NULL.
-     * Unfortunately, many of the MSVC (<= VS 2010) STL methods assert() that iterators are never NULL.
-     * So we fudge here by abusing 'this' so that our iterators are always !NULL.
-     */
-    inline E* base_ptr() const {
-#if defined(_MSC_VER) && _MSC_VER<=1600
-        return this->m_count ? this->m_sdata.get() : (E*)(this-1);
-#else
-        return this->m_sdata.get();
-#endif
-    }
-public:
+
     // STL iterators
 
-    iterator begin() const{return this->base_ptr()+this->m_offset;}
+    iterator begin() const{return this->m_sdata.get()+this->m_offset;}
     const_iterator cbegin() const{return begin();}
 
-    iterator end() const{return this->base_ptr()+this->m_offset+this->m_count;}
+    iterator end() const{return this->m_sdata.get()+this->m_offset+this->m_count;}
     const_iterator cend() const{return end();}
 
     reverse_iterator rbegin() const{return reverse_iterator(end());}
@@ -612,15 +513,10 @@ public:
 
     // data access
 
-    //! @brief Return Base pointer
     pointer data() const{return this->m_sdata.get()+this->m_offset;}
 
-    //! @brief Member access
-    //! Undefined if empty()==true.
     reference operator[](size_t i) const {return this->m_sdata.get()[this->m_offset+i];}
 
-    //! @brief Member access
-    //! @throws std::out_of_range if i>=size().
     reference at(size_t i) const
     {
         if(i>this->m_count)
@@ -667,11 +563,7 @@ public:
 
     typedef std::tr1::shared_ptr<E> shared_pointer_type;
 
-#if __cplusplus>=201103L
-    constexpr shared_vector() noexcept :base_t(), m_vtype((ScalarType)-1) {}
-#else
     shared_vector() :base_t(), m_vtype((ScalarType)-1) {}
-#endif
 
     shared_vector(pointer v, size_t o, size_t c)
         :base_t(v,o,c), m_vtype((ScalarType)-1) {}
@@ -687,11 +579,6 @@ public:
     shared_vector(const shared_vector& o)
         :base_t(o), m_vtype(o.m_vtype) {}
 
-#if __cplusplus>=201103L
-    shared_vector(shared_vector&& o)
-        :base_t(std::move(o)), m_vtype(o.m_vtype) {}
-#endif
-
     //! @internal
     //! Internal for static_shared_vector_cast
     template<typename FROM>
@@ -722,22 +609,6 @@ public:
         return *this;
     }
 
-#if __cplusplus>=201103L
-    shared_vector& operator=(shared_vector&& o)
-    {
-        if(&o!=this) {
-            this->base_t::operator=(std::move(o));
-            m_vtype = o.m_vtype;
-        }
-        return *this;
-    }
-#endif
-
-    void swap(shared_vector& o) {
-        base_t::swap(o);
-        std::swap(m_vtype, o.m_vtype);
-    }
-
     size_t max_size() const{return (size_t)-1;}
 
     pointer data() const{
@@ -752,21 +623,33 @@ namespace detail {
     template<typename TO, typename FROM, class Enable = void>
     struct static_shared_vector_caster { /* no default */ };
     // from void to non-void with same const-ness
-    template<typename TO, typename FROM>
-    struct static_shared_vector_caster<TO, FROM,
-                                       typename meta::_and<meta::_and<meta::is_not_void<TO>, meta::is_void<FROM> >,
-                                                           meta::same_const<TO,FROM> >::type> {
-        static inline shared_vector<TO> op(const shared_vector<FROM>& src) {
+    template<typename TO>
+    struct static_shared_vector_caster<TO, void,
+                                       typename meta::_and<meta::same_const<TO,void>, meta::is_not_void<TO> >::type> {
+        static inline shared_vector<TO> op(const shared_vector<void>& src) {
+            return shared_vector<TO>(src, detail::_shared_vector_cast_tag());
+        }
+    };
+    template<typename TO>
+    struct static_shared_vector_caster<TO, const void,
+                                       typename meta::_and<meta::same_const<TO,const void>, meta::is_not_void<TO> >::type> {
+        static inline shared_vector<TO> op(const shared_vector<const void>& src) {
             return shared_vector<TO>(src, detail::_shared_vector_cast_tag());
         }
     };
     // from non-void to void with same const-ness
-    template<typename TO, typename FROM>
-    struct static_shared_vector_caster<TO, FROM,
-                                       typename meta::_and<meta::_and<meta::is_void<TO>, meta::is_not_void<FROM> >,
-                                                           meta::same_const<TO,FROM> >::type> {
-        static FORCE_INLINE shared_vector<TO> op(const shared_vector<FROM>& src) {
-            return shared_vector<TO>(src, detail::_shared_vector_cast_tag());
+    template<typename FROM>
+    struct static_shared_vector_caster<void, FROM,
+                                       typename meta::_and<meta::same_const<void,FROM>, meta::is_not_void<FROM> >::type> {
+        static FORCE_INLINE shared_vector<void> op(const shared_vector<FROM>& src) {
+            return shared_vector<void>(src, detail::_shared_vector_cast_tag());
+        }
+    };
+    template<typename FROM>
+    struct static_shared_vector_caster<const void, FROM,
+                                       typename meta::_and<meta::same_const<const void,FROM>, meta::is_not_void<FROM> >::type> {
+        static FORCE_INLINE shared_vector<const void> op(const shared_vector<FROM>& src) {
+            return shared_vector<const void>(src, detail::_shared_vector_cast_tag());
         }
     };
 
@@ -946,7 +829,7 @@ const_shared_vector_cast(shared_vector<FROM>& src)
 
 namespace ScalarTypeFunc {
     //! Allocate an untyped array based on ScalarType
-    epicsShareFunc shared_vector<void> allocArray(ScalarType id, size_t len);
+    shared_vector<void> allocArray(ScalarType id, size_t len);
 
     //! Allocate an untyped array based on ScalarType
     template<ScalarType ID>

src/misc/pv/status.h

@@ -46,14 +46,10 @@ namespace epics { namespace pvData {
         	
         	static Status Ok;
 
-            static inline Status warn(const std::string& m) { return Status(STATUSTYPE_WARNING, m); }
-            static inline Status error(const std::string& m) { return Status(STATUSTYPE_ERROR, m); }
-            static inline Status fatal(const std::string& m) { return Status(STATUSTYPE_FATAL, m); }
-
             /**
              * Creates OK status; STATUSTYPE_OK, empty message and stackDump.
              */
-            Status() :m_statusType(STATUSTYPE_OK) {}
+            Status();
         	
         	/**
         	 * Create non-OK status.
@@ -65,25 +61,25 @@ namespace epics { namespace pvData {
              */
             Status(StatusType type, std::string const & message, std::string const & stackDump);
         
-            virtual ~Status() {}
+            ~Status();
             
             /**
              * Get status type.
              * @return status type, non-<code>null</code>.
              */
-            inline StatusType getType() const { return m_statusType; }
+            StatusType getType() const;
 
             /**
              * Get error message describing an error. Required if error status.
              * @return error message.
              */
-            inline const std::string& getMessage() const { return m_message; }
+            std::string getMessage() const;
 
             /**
              * Get stack dump where error (exception) happened. Optional.
              * @return stack dump.
              */
-            inline const std::string& getStackDump() const { return m_stackDump; }
+            std::string getStackDump() const;
 
             /**
              * Convenient OK test. Same as <code>(getType() == StatusType.OK)</code>.
@@ -92,47 +88,13 @@ namespace epics { namespace pvData {
              * @return OK status.
              * @see #isSuccess()
              */
-            inline bool isOK() const {
-                return (m_statusType == STATUSTYPE_OK);
-            }
+            bool isOK() const;
 
             /**
-             * Check if operation succeeded (OK or WARNING).
+             * Check if operation succeeded.
              * @return operation success status.
              */
-            inline bool isSuccess() const {
-                return (m_statusType == STATUSTYPE_OK || m_statusType == STATUSTYPE_WARNING);
-            }
-
-#if __cplusplus>=201103L
-            FORCE_INLINE explicit operator bool() const {
-                return isSuccess();
-            }
-#else
-        private:
-            typedef bool (Status::*truth_type)() const;
-        public:
-            FORCE_INLINE operator truth_type() const {
-                return isSuccess() ? &Status::isSuccess : 0;
-            }
-#endif
-
-            /** override this Status if the other has higher StatusType
-             @code
-             Status ret;
-             ret |= call1();
-             if(ret)
-                ret |= call2();
-             return ret;
-             @endcode
-             */
-            void maximize(const Status& o);
-
-            //! short hand for "this->maximize(o)"
-            FORCE_INLINE Status& operator|=(const Status& o) {
-                maximize(o);
-                return *this;
-            }
+            bool isSuccess() const;
 
             void serialize(ByteBuffer *buffer, SerializableControl *flusher) const;
             void deserialize(ByteBuffer *buffer, DeserializableControl *flusher);
@@ -147,15 +109,8 @@ namespace epics { namespace pvData {
 
         };
 
-        FORCE_INLINE std::ostream& operator<<(std::ostream& o, const Status& status) {
-            status.dump(o);
-            return o;
-        }
-
-        FORCE_INLINE std::ostream& operator<<(std::ostream& o, const Status::StatusType& statusType) {
-            o << Status::StatusTypeName[statusType];
-            return o;
-        }
+        epicsShareExtern std::ostream& operator<<(std::ostream& o, const Status& status);
+        epicsShareExtern std::ostream& operator<<(std::ostream& o, const Status::StatusType& statusType);
 
 }}
 #endif  /* STATUS_H */

src/misc/pv/templateMeta.h

@@ -10,9 +10,7 @@
 // gently nudge the compiler to inline our wrappers
 // Warning: Only use this when the template body is *small*.
 //          You have been warned!
-#if defined(__MINGW32__)
-# define FORCE_INLINE inline
-#elif defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 402)
+#if defined(__GNUC__) && __GNUC__>=3
 # define FORCE_INLINE __attribute__((always_inline)) inline
 #elif defined(_MSC_VER)
 # define FORCE_INLINE __forceinline
@@ -116,31 +114,6 @@ struct _and {};
 template<typename A, typename B, class R>
 struct _and<A,B, typename A::type, typename B::type, R> { typedef R type; };
 
-/** Mangle type to best pass as an argument.
- *
- * POD types passed by value.
- * All others by const reference.
- */
-template<typename T>
-struct arg_type {typedef const T& type;};
-#define SIMPLE_ARG_TYPE(TYPE) template<> struct arg_type<TYPE> { typedef TYPE type; };
-SIMPLE_ARG_TYPE(bool)
-SIMPLE_ARG_TYPE(char)
-SIMPLE_ARG_TYPE(signed char)
-SIMPLE_ARG_TYPE(unsigned char)
-SIMPLE_ARG_TYPE(short)
-SIMPLE_ARG_TYPE(unsigned short)
-SIMPLE_ARG_TYPE(int)
-SIMPLE_ARG_TYPE(unsigned int)
-SIMPLE_ARG_TYPE(long)
-SIMPLE_ARG_TYPE(unsigned long)
-SIMPLE_ARG_TYPE(long long)
-SIMPLE_ARG_TYPE(unsigned long long)
-SIMPLE_ARG_TYPE(float)
-SIMPLE_ARG_TYPE(double)
-SIMPLE_ARG_TYPE(long double)
-#undef SIMPLE_ARG_TYPE
-
 }}}
 
 #endif // TEMPLATEMETA_H

src/misc/pv/thread.h

@@ -11,7 +11,6 @@
 
 #include <memory>
 #include <sstream>
-#include <stdexcept>
 
 #if __cplusplus>=201103L
 #include <functional>
@@ -42,7 +41,37 @@ typedef std::tr1::shared_ptr<epicsThread> EpicsThreadPtr;
 
 typedef epicsThreadRunable Runnable;
 
+//! Helper for those cases where a class should have more than one runnable
+template<typename C>
+class epicsShareClass RunnableMethod : public Runnable, private NoDefaultMethods
+{
+    typedef void (C::*meth_t)();
+    C *inst;
+    meth_t meth;
+
+    virtual void run()
+    {
+        (inst->*meth)();
+    }
+public:
+    RunnableMethod(C* inst, void (C::*meth)())
+        :inst(inst), meth(meth)
+    {}
+};
+
 namespace detail {
+struct FuncRunner : public epicsThreadRunable
+{
+    typedef void (*fn_t)(void*);
+    fn_t fn;
+    void *arg;
+    FuncRunner(fn_t f, void *a) :fn(f), arg(a) {}
+    virtual ~FuncRunner(){}
+    virtual void run()
+    {
+        (*fn)(arg);
+    }
+};
 template<typename C>
 struct MethRunner : public epicsThreadRunable
 {
@@ -56,14 +85,26 @@ struct MethRunner : public epicsThreadRunable
         (inst->*fn)();
     }
 };
+#if __cplusplus>=201103L
+struct BindRunner : public epicsThreadRunable
+{
+    typedef std::function<void()> fn_t;
+    fn_t fn;
+    BindRunner(const fn_t f) : fn(f) {}
+    virtual ~BindRunner() {}
+    virtual void run()
+    {
+        fn();
+    }
+};
+#endif
 } // namespace detail
 
 /**
  * @brief C++ wrapper for epicsThread from EPICS base.
  *
  */
-class epicsShareClass Thread : public epicsThread {
-    EPICS_NOT_COPYABLE(Thread)
+class epicsShareClass Thread : public epicsThread, private NoDefaultMethods {
 public:
     /** @brief Holds all the configuration necessary to launch a @class Thread
      *
@@ -98,31 +139,56 @@ public:
         std::ostringstream p_strm;
         bool p_autostart;
         Runnable *p_runner;
-        typedef epics::auto_ptr<Runnable> p_owned_runner_t;
+#if __cplusplus>=201103L
+        typedef std::unique_ptr<Runnable> p_owned_runner_t;
+#else
+        typedef std::auto_ptr<Runnable> p_owned_runner_t;
+#endif
         p_owned_runner_t p_owned_runner;
         friend class Thread;
-        Runnable& x_getrunner();
-        void x_setdefault();
+        Runnable& x_getrunner()
+        {
+            if(!this->p_runner)
+                throw std::logic_error("Thread::Config missing run()");
+            return *this->p_runner;
+        }
+        void x_setdefault()
+        {
+            this->p_prio = epicsThreadPriorityLow;
+            this->p_autostart = true;
+            this->p_runner = NULL;
+            (*this).stack(epicsThreadStackSmall);
+        }
 
     public:
-        Config();
-        Config(Runnable *r);
-        Config(void(*fn)(void*), void *ptr);
+        Config() {this->x_setdefault();}
+        Config(Runnable *r) {this->x_setdefault();this->run(r);}
+        Config(void(*fn)(void*), void *ptr) {this->x_setdefault();this->run(fn, ptr);}
         template<typename C>
         Config(C* inst, void(C::*meth)()) {this->x_setdefault();this->run(inst, meth);}
 #if __cplusplus>=201103L
-        Config(std::function<void()>&& fn);
+        Config(const std::function<void()>& fn) {this->x_setdefault();this->run(fn);}
 #endif
 
-        Config& name(const std::string& n);
-        Config& prio(unsigned int p);
-        Config& stack(epicsThreadStackSizeClass s);
-        Config& autostart(bool a);
+        inline Config& name(const std::string& n)
+        { this->p_strm.str(n); return *this; }
+        inline Config& prio(unsigned int p)
+        { this->p_prio = p; return *this; }
+        inline Config& stack(epicsThreadStackSizeClass s)
+        { this->p_stack = epicsThreadGetStackSize(s); return *this; }
+        inline Config& autostart(bool a)
+        { this->p_autostart = a; return *this; }
 
         //! Thread will execute Runnable::run()
-        Config& run(Runnable* r);
+        Config& run(Runnable* r)
+        { this->p_runner = r; return *this; }
         //! Thread will execute (*fn)(ptr)
-        Config& run(void(*fn)(void*), void *ptr);
+        Config& run(void(*fn)(void*), void *ptr)
+        {
+            this->p_owned_runner.reset(new detail::FuncRunner(fn, ptr));
+            this->p_runner = this->p_owned_runner.get();
+            return *this;
+        }
         //! Thread will execute (inst->*meth)()
         template<typename C>
         Config& run(C* inst, void(C::*meth)())
@@ -132,7 +198,12 @@ public:
             return *this;
         }
 #if __cplusplus>=201103L
-        Config& run(std::function<void()>&& fn);
+        Config& run(const std::function<void()>& fn)
+        {
+            this->p_owned_runner.reset(new detail::BindRunner(fn));
+            this->p_runner = this->p_owned_runner.get();
+            return *this;
+        }
 #endif
 
         //! Append to thread name string.  Argument must be understood by std::ostream::operator<<
@@ -158,7 +229,14 @@ public:
     Thread(std::string name,
            ThreadPriority priority,
            Runnable *runnable,
-           epicsThreadStackSizeClass stkcls=epicsThreadStackSmall);
+           epicsThreadStackSizeClass stkcls=epicsThreadStackSmall)
+        :epicsThread(*runnable,
+                     name.c_str(),
+                     epicsThreadGetStackSize(stkcls),
+                     priority)
+    {
+        this->start();
+    }
 
     /**
      * 
@@ -178,19 +256,38 @@ public:
     Thread(Runnable &runnable,
            std::string name,
            unsigned int stksize,
-           unsigned int priority=lowestPriority);
+           unsigned int priority=lowestPriority)
+        :epicsThread(runnable,
+                     name.c_str(),
+                     stksize,
+                     priority)
+    {
+        this->start();
+    }
 
     //! @brief Create a new thread using the given @class Config
     //! @throws std::logic_error for improper @class Config (ie. missing runner)
-    Thread(Config& c);
+    Thread(Config& c)
+        :epicsThread(c.x_getrunner(), c.p_strm.str().c_str(),
+                     c.p_stack, c.p_prio)
+    {
+#if __cplusplus>=201103L
+        p_owned = std::move(c.p_owned_runner);
+#else
+        p_owned = c.p_owned_runner;
+#endif
+        if(c.p_autostart)
+            this->start();
+    }
 
     /**
      * Destructor
      */
-    ~Thread();
+    ~Thread()
+    {
+        this->exitWait();
+    }
 
-    static size_t num_instances;
-private:
     Config::p_owned_runner_t p_owned;
 };
 

src/misc/pv/timeFunction.h

@@ -0,0 +1,70 @@
+/* timeFunction.h */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#ifndef TIMEFUNCTION_H
+#define TIMEFUNCTION_H
+
+#include <pv/sharedPtr.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvData { 
+
+class TimeFunctionRequester;
+class TimeFunction;
+typedef std::tr1::shared_ptr<TimeFunctionRequester> TimeFunctionRequesterPtr;
+typedef std::tr1::shared_ptr<TimeFunction> TimeFunctionPtr;
+
+/** 
+ * @brief Class that must be implemented by timeFunction requester.
+ *
+ */
+class epicsShareClass TimeFunctionRequester {
+public:
+    POINTER_DEFINITIONS(TimeFunctionRequester);
+    /** 
+     * Destructor
+     */
+    virtual ~TimeFunctionRequester(){}
+    /**
+     *  function to be timed.
+     *  It will get called multiple times.
+     */
+    virtual void function() = 0;
+};
+
+
+/** 
+ * @brief Class for measuring time it takes to execute a function.
+ *
+ */
+class epicsShareClass TimeFunction {
+public:
+    POINTER_DEFINITIONS(TimeFunction);
+    /**
+     * Constructor
+     * @param requester The class that has a function method.
+     */
+    TimeFunction(TimeFunctionRequesterPtr const & requester);
+    /**
+     * Destructor
+     */
+    ~TimeFunction();
+    /**
+     * Time the function.
+     * @return the time in seconds to execute the function.
+     * Note that the function may be called many times.
+     */
+    double timeCall();
+private:
+    TimeFunctionRequesterPtr requester;
+};
+  
+
+}}
+#endif  /* TIMEFUNCTION_H */

src/misc/pv/timer.h

@@ -9,8 +9,6 @@
 #ifndef TIMER_H
 #define TIMER_H
 #include <memory>
-#include <list>
-
 #include <stddef.h>
 #include <stdlib.h>
 #include <stddef.h>
@@ -57,28 +55,34 @@ public:
      */
     virtual void timerStopped() = 0;
 private:
-    epicsTime timeToRun;
+    TimerCallbackPtr next;
+    TimeStamp timeToRun;
     double period;
     bool onList;
     friend class Timer;
-    struct IncreasingTime;
 };
 
 /**
  * @brief Support for delayed or periodic callback execution.
  *
  */
-class epicsShareClass Timer : private Runnable {
+class epicsShareClass Timer : public Runnable {
 public:
     POINTER_DEFINITIONS(Timer);
-    /** Create a new timer queue
+    /**
+     * Constructor
      * @param threadName name for the timer thread.
      * @param priority thread priority
      */
     Timer(std::string threadName, ThreadPriority priority);
+    /**
+     * Destructor
+     */
     virtual ~Timer();
-    //! Prevent new callbacks from being scheduled, and cancel pending callbacks
-    void close();
+    /**
+     * The thread run method. This is called automatically.
+     */
+    virtual void run();
     /**
      * schedule a callback after a delay.
      * @param timerCallback the timerCallback instance.
@@ -100,38 +104,31 @@ public:
     /**
      * cancel a callback.
      * @param timerCallback the timerCallback to cancel.
-     * @returns true if the timer was queued, and now is cancelled
      */
-    bool cancel(TimerCallbackPtr const &timerCallback);
+    void cancel(TimerCallbackPtr const &timerCallback);
     /**
      * Is the callback scheduled to be called?
      * @param timerCallback the timerCallback.
      * @return (false,true) if (not, is) scheduled.
      */
-    bool isScheduled(TimerCallbackPtr const &timerCallback) const;
+    bool isScheduled(TimerCallbackPtr const &timerCallback);
     /**
      * show the elements in the timer queue.
      * @param o The output stream for the output
      */
-    void dump(std::ostream& o) const;
+    void dump(std::ostream& o);
 
 private:
-    virtual void run();
-
-    // call with mutex held
     void addElement(TimerCallbackPtr const &timerCallback);
-
-    typedef std::list<TimerCallbackPtr> queue_t;
-
-    mutable Mutex mutex;
-    queue_t queue;
+    TimerCallbackPtr head;
+    Mutex mutex;
     Event waitForWork;
-    bool waiting;
+    Event waitForDone;
     bool alive;
     Thread thread;
 };
 
-epicsShareExtern std::ostream& operator<<(std::ostream& o, const Timer& timer);
+epicsShareExtern std::ostream& operator<<(std::ostream& o, Timer& timer);
 
 }}
 #endif  /* TIMER_H */

src/misc/pv/typeCast.h

@@ -22,29 +22,17 @@ namespace epics { namespace pvData {
 namespace detail {
     // parseToPOD wraps the epicsParse*() functions in one name
     // and throws exceptions
-    epicsShareExtern void parseToPOD(const char*, boolean *out);
-    epicsShareExtern void parseToPOD(const char*, int8 *out);
-    epicsShareExtern void parseToPOD(const char*, uint8 *out);
-    epicsShareExtern void parseToPOD(const char*, int16_t *out);
-    epicsShareExtern void parseToPOD(const char*, uint16_t *out);
-    epicsShareExtern void parseToPOD(const char*, int32_t *out);
-    epicsShareExtern void parseToPOD(const char*, uint32_t *out);
-    epicsShareExtern void parseToPOD(const char*, int64_t *out);
-    epicsShareExtern void parseToPOD(const char*, uint64_t *out);
-    epicsShareExtern void parseToPOD(const char*, float *out);
-    epicsShareExtern void parseToPOD(const char*, double *out);
-
-    static inline void parseToPOD(const std::string& str, boolean *out) { return parseToPOD(str.c_str(), out); }
-    static inline void parseToPOD(const std::string& str, int8 *out) { return parseToPOD(str.c_str(), out); }
-    static inline void parseToPOD(const std::string& str, uint8 *out) { return parseToPOD(str.c_str(), out); }
-    static inline void parseToPOD(const std::string& str, int16_t *out) { return parseToPOD(str.c_str(), out); }
-    static inline void parseToPOD(const std::string& str, uint16_t *out) { return parseToPOD(str.c_str(), out); }
-    static inline void parseToPOD(const std::string& str, int32_t *out) { return parseToPOD(str.c_str(), out); }
-    static inline void parseToPOD(const std::string& str, uint32_t *out) { return parseToPOD(str.c_str(), out); }
-    static inline void parseToPOD(const std::string& str, int64_t *out) { return parseToPOD(str.c_str(), out); }
-    static inline void parseToPOD(const std::string& str, uint64_t *out) { return parseToPOD(str.c_str(), out); }
-    static inline void parseToPOD(const std::string& str, float *out) { return parseToPOD(str.c_str(), out); }
-    static inline void parseToPOD(const std::string& str, double *out) { return parseToPOD(str.c_str(), out); }
+    epicsShareExtern void parseToPOD(const std::string&, boolean *out);
+    epicsShareExtern void parseToPOD(const std::string&, int8 *out);
+    epicsShareExtern void parseToPOD(const std::string&, uint8 *out);
+    epicsShareExtern void parseToPOD(const std::string&, int16_t *out);
+    epicsShareExtern void parseToPOD(const std::string&, uint16_t *out);
+    epicsShareExtern void parseToPOD(const std::string&, int32_t *out);
+    epicsShareExtern void parseToPOD(const std::string&, uint32_t *out);
+    epicsShareExtern void parseToPOD(const std::string&, int64_t *out);
+    epicsShareExtern void parseToPOD(const std::string&, uint64_t *out);
+    epicsShareExtern void parseToPOD(const std::string&, float *out);
+    epicsShareExtern void parseToPOD(const std::string&, double *out);
 
     /* want to pass POD types by value,
      * and std::string by const reference
@@ -120,28 +108,13 @@ namespace detail {
         }
     };
 
-    // parse POD from C string
-    // TO!=const char*
-    template<typename TO>
-    struct cast_helper<TO, const char*,
-            typename meta::_and<
-                typename meta::not_same_type<TO,const char*>,
-                typename meta::not_same_type<TO,std::string>
-            >::type> {
-        static FORCE_INLINE TO op(const char* from) {
-            TO ret;
-            parseToPOD(from, &ret);
-            return ret;
-        }
-    };
-
 } // end detail
 
 /** @brief Casting/converting between supported scalar types.
  *
  * Supported types: uint8_t, int8_t, uint16_t, int16_t,
  *                  uint32_t, int32_t, uint64_t, int64_t,
- *                  float, double, std::string, const char* (only FROM)
+ *                  float, double, std::string
  *
  * As defined in pvType.h
  *
@@ -208,35 +181,6 @@ static FORCE_INLINE
 typename detail::print_convolute<T>::return_t
 print_cast(const T& v) { return detail::print_convolute<T>::op(v); }
 
-struct escape;
-
-epicsShareFunc
-std::ostream& operator<<(std::ostream& strm, const escape& Q);
-
-//! Helper to print a string with escaping
-//! @code strm<<'"'<<escape(astring)<<'"' @endcode
-struct epicsShareClass escape
-{
-    enum style_t {
-        C,   // default
-        CSV, // a la RFC4180
-    };
-private:
-    const std::string& orig;
-    style_t S;
-public:
-    escape(const std::string& orig) :orig(orig), S(C) {}
-    ~escape();
-    //! Change escaping style
-    inline escape& style(style_t s) { S = s; return *this; }
-    //! print to string and return.  (alloc and copy)
-    std::string str() const;
-
-    friend
-    epicsShareFunc
-    std::ostream& operator<<(std::ostream& strm, const escape& Q);
-};
-
 }} // end namespace
 
 #endif // PVTYPECAST_H

src/misc/pvUnitTest.cpp

@@ -1,53 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-#include <string>
-#include <vector>
-
-#include <epicsUnitTest.h>
-
-#define epicsExportSharedSymbols
-#include <pv/pvUnitTest.h>
-
-namespace detail {
-
-testPassx::~testPassx() {
-    if(!alive) return;
-    std::string msg(strm.str());
-    size_t nl = msg.find_first_of('\n');
-    if(nl==msg.npos) {
-        // single-line output
-        if(dotest)
-            testOk(pass, "%s", msg.c_str());
-        else
-            testDiag("%s", msg.c_str());
-
-    } else {
-        // multi-line output
-        std::istringstream lines(msg);
-        std::string line;
-        bool first = true;
-        while(std::getline(lines ,line)) {
-            if(dotest && first) {
-                first = false;
-                testOk(pass, "%s", line.c_str());
-            } else {
-                testDiag("%s", line.c_str());
-            }
-        }
-    }
-}
-
-testPassx::testPassx(testPassx& o)
-    :strm(o.strm.str())
-    ,dotest(o.dotest)
-    ,pass(o.pass)
-    ,alive(o.alive)
-{
-    strm.seekp(0, std::ios_base::end);
-    o.alive = false;
-}
-
-} // namespace detail

src/misc/reftrack.cpp

@@ -1,299 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-#include <iostream>
-#include <sstream>
-#include <stdexcept>
-#include <memory>
-
-#include <stdlib.h>
-#include <string.h>
-
-#include <epicsString.h>
-#include <epicsGuard.h>
-#include <epicsMutex.h>
-#include <epicsEvent.h>
-#include <epicsThread.h>
-#include <epicsTime.h>
-
-#define epicsExportSharedSymbols
-#include <pv/pvdVersion.h>
-#include <pv/sharedPtr.h>
-#include "pv/reftrack.h"
-
-namespace {
-
-#ifndef REFTRACK_USE_ATOMIC
-static inline
-size_t readref(const size_t *ref)
-{
-    volatile const size_t *vref = ref;
-    return *vref;
-}
-#endif
-
-typedef epicsGuard<epicsMutex> Guard;
-typedef epicsGuardRelease<epicsMutex> UnGuard;
-
-struct refgbl_t {
-    epicsMutex lock;
-    typedef std::map<std::string, const size_t*> counters_t;
-    counters_t counters;
-} *refgbl;
-
-void refgbl_init(void *)
-{
-    try {
-        refgbl = new refgbl_t;
-    } catch(std::exception& e) {
-        std::cerr<<"Failed to initialize global ref. counter registry :"<<e.what()<<"\n";
-    }
-}
-
-epicsThreadOnceId refgbl_once = EPICS_THREAD_ONCE_INIT;
-
-void refgbl_setup()
-{
-    epicsThreadOnce(&refgbl_once, &refgbl_init, 0);
-    if(!refgbl)
-        throw std::runtime_error("Failed to initialize global ref. counter registry");
-}
-
-} // namespace
-
-namespace epics {
-
-void registerRefCounter(const char *name, const size_t* counter)
-{
-    refgbl_setup();
-    Guard G(refgbl->lock);
-    refgbl->counters[name] = counter;
-}
-
-void unregisterRefCounter(const char *name, const size_t* counter)
-{
-    refgbl_setup();
-    Guard G(refgbl->lock);
-    refgbl_t::counters_t::iterator it(refgbl->counters.find(name));
-    if(it!=refgbl->counters.end() && it->second==counter)
-        refgbl->counters.erase(it);
-}
-
-size_t readRefCounter(const char *name)
-{
-    refgbl_setup();
-    Guard G(refgbl->lock);
-    refgbl_t::counters_t::iterator it(refgbl->counters.find(name));
-    if(it==refgbl->counters.end())
-        return 0;
-#ifdef REFTRACK_USE_ATOMIC
-    return atomic::get(*it->second);
-#else
-    return readref(it->second);
-#endif
-}
-
-const RefSnapshot::Count&
-RefSnapshot::operator[](const std::string& name) const
-{
-    static const Count zero;
-
-    cnt_map_t::const_iterator it(counts.find(name));
-    return it==counts.end() ? zero : it->second;
-}
-
-void RefSnapshot::update()
-{
-    refgbl_t::counters_t counters;
-    {
-        refgbl_setup();
-        Guard G(refgbl->lock);
-        counters = refgbl->counters; // copy
-    }
-
-    counts.clear();
-
-    for(refgbl_t::counters_t::const_iterator it=counters.begin(),
-                                            end=counters.end();
-        it!=end; ++it)
-    {
-#ifdef REFTRACK_USE_ATOMIC
-        size_t cnt = atomic::get(*it->second);
-#else
-        size_t cnt = readref(it->second);
-#endif
-
-        counts[it->first] = Count(cnt, 0);
-    }
-}
-
-RefSnapshot RefSnapshot::operator-(const RefSnapshot& rhs) const
-{
-    RefSnapshot ret;
-
-    RefSnapshot::cnt_map_t::const_iterator lit = counts.begin(),
-                                           lend= counts.end(),
-                                           rit = rhs.counts.begin(),
-                                           rend= rhs.counts.end();
-
-    while(lit!=lend || rit!=rend)
-    {
-        if(lit==lend || (rit!=rend && lit->first > rit->first)) {
-            ret.counts[rit->first] = RefSnapshot::Count(0, -long(rit->second.current));
-            ++rit;
-
-        } else if(rit==rend || lit->first < rit->first) {
-            ret.counts[lit->first] = RefSnapshot::Count(lit->second.current, long(lit->second.current));
-            ++lit;
-
-        } else { // !end and lit->first == rit->first
-            ret.counts[lit->first] = RefSnapshot::Count(lit->second.current,
-                                                        long(lit->second.current) - long(rit->second.current));
-            ++lit;
-            ++rit;
-        }
-    }
-
-    return ret;
-}
-
-std::ostream& operator<<(std::ostream& strm, const RefSnapshot& snap)
-{
-    for(RefSnapshot::const_iterator it = snap.begin(), end = snap.end(); it!=end; ++it)
-    {
-        if(it->second.delta==0) continue;
-        strm<<it->first<<":\t"<<it->second.current<<" (delta "<<it->second.delta<<")\n";
-    }
-    return strm;
-}
-
-struct RefMonitor::Impl : public epicsThreadRunable
-{
-    RefMonitor& owner;
-    epics::auto_ptr<epicsThread> worker;
-    epicsMutex lock;
-    epicsEvent wakeup;
-    RefSnapshot prev;
-    bool done;
-    double period;
-    Impl(RefMonitor* owner) :owner(*owner), done(false), period(10.0) {}
-    virtual ~Impl() {}
-
-    virtual void run()
-    {
-        Guard G(lock);
-        while(!done) {
-            RefSnapshot current, P;
-            P = prev; // copy
-            {
-                UnGuard U(G);
-
-                current.update();
-
-                owner.show(current-P);
-            }
-
-            prev.swap(current);
-
-            {
-                UnGuard U(G);
-                wakeup.wait(period);
-            }
-        }
-    }
-};
-
-RefMonitor::RefMonitor()
-    :impl(new Impl(this))
-{}
-RefMonitor::~RefMonitor()
-{
-    stop();
-    delete impl;
-}
-
-void RefMonitor::start(double period)
-{
-    Guard G(impl->lock);
-    if(impl->worker.get()) return;
-
-    impl->done = false;
-    impl->period = period;
-    impl->worker.reset(new epicsThread(*impl,
-                                       "RefMonitor",
-                                       epicsThreadGetStackSize(epicsThreadStackSmall),
-                                       epicsThreadPriorityMin));
-    impl->worker->start();
-}
-
-void RefMonitor::stop()
-{
-    epics::auto_ptr<epicsThread> W;
-    {
-        Guard G(impl->lock);
-        if(!impl->worker.get()) return;
-        epics::swap(W, impl->worker);
-        impl->done = true;
-    }
-
-    impl->wakeup.signal();
-    W->exitWait();
-
-    W.reset();
-}
-
-bool RefMonitor::running() const
-{
-    Guard G(impl->lock);
-    return !!impl->worker.get();
-}
-
-void RefMonitor::current()
-{
-    RefSnapshot current, P;
-    current.update();
-
-    {
-        Guard G(impl->lock);
-        P = impl->prev; // copy
-    }
-
-    show(current-P, true);
-}
-
-void RefMonitor::show(const RefSnapshot &snap, bool complete)
-{
-    char buf[80];
-    epicsTime::getCurrent().strftime(buf, sizeof(buf), "%a %b %d %Y %H:%M:%S.%f");
-    buf[sizeof(buf)-1] = '\0';
-    std::cerr<<buf<<" : References\n";
-
-    for(RefSnapshot::const_iterator it = snap.begin(), end = snap.end(); it!=end; ++it)
-    {
-        // print if delta!=0 or (complete && current!=0)
-        if(it->second.delta==0 && (!complete || it->second.current==0)) continue;
-        std::cerr<<it->first<<":\t"<<it->second.current<<" (delta "<<it->second.delta<<")\n";
-    }
-}
-
-} // namespace epics
-
-
-char* epicsRefSnapshotCurrent()
-{
-    try {
-        epics::RefSnapshot snap;
-        snap.update();
-        std::ostringstream strm;
-        strm<<snap;
-        const char *str = strm.str().c_str();
-        char *ret = (char*)malloc(strlen(str)+1);
-        if(ret)
-            strcpy(ret, str);
-        return ret;
-    }catch(std::exception& e){
-        return epicsStrDup(e.what());
-    }
-}

src/misc/requester.cpp

@@ -0,0 +1,44 @@
+/* requester.cpp */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#include <string>
+#include <cstdio>
+#include <iostream>
+
+#include <epicsMutex.h>
+
+#define epicsExportSharedSymbols
+#include <pv/lock.h>
+#include <pv/requester.h>
+
+using std::string;
+
+namespace epics { namespace pvData { 
+
+static StringArray messageTypeName(MESSAGE_TYPE_COUNT);
+
+string getMessageTypeName(MessageType messageType)
+{
+    // TODO not thread-safe
+    static Mutex mutex;
+    Lock xx(mutex);
+    if(messageTypeName[0].size()==0) {
+        messageTypeName[0] = "info";
+        messageTypeName[1] = "warning";
+        messageTypeName[2] = "error";
+        messageTypeName[3] = "fatalError";
+    }
+    return messageTypeName[messageType];
+}
+
+void Requester::message(std::string const & message,MessageType messageType)
+{
+    std::cerr << "[" << getRequesterName() << "] message(" << message << ", " << getMessageTypeName(messageType) << ")\n";
+}
+
+}}

src/misc/serializeHelper.cpp

@@ -98,6 +98,8 @@ namespace epics {
                     break;
             }
         }
+        
+        static string emptyStringtring;
 
         string SerializeHelper::deserializeString(ByteBuffer* buffer,
                 DeserializableControl* control) {
@@ -137,7 +139,7 @@ namespace epics {
                 }
             }
             else
-                return std::string();
+                return emptyStringtring;
         }
     }
 }

src/misc/status.cpp

@@ -19,11 +19,20 @@ const char* Status::StatusTypeName[] = { "OK", "WARNING", "ERROR", "FATAL" };
 
 Status Status::Ok;
 
+//PVDATA_REFCOUNT_MONITOR_DEFINE(status);
+
+Status::Status() :
+    m_statusType(STATUSTYPE_OK)
+{
+}
+
 Status::Status(StatusType type, string const & message) :
     m_statusType(type), m_message(message)
 {
     if (type == STATUSTYPE_OK)
         throw std::invalid_argument("type == STATUSTYPE_OK");
+         
+    //PVDATA_REFCOUNT_MONITOR_CONSTRUCT(status);
 }
 
 Status::Status(StatusType type, string const & message, string const & stackDump) :
@@ -31,15 +40,38 @@ Status::Status(StatusType type, string const & message, string const & stackDump
 {
     if (type == STATUSTYPE_OK)
         throw std::invalid_argument("type == STATUSTYPE_OK");
+
+    //PVDATA_REFCOUNT_MONITOR_CONSTRUCT(status);
 }
     
-void Status::maximize(const Status& o)
+Status::~Status() {
+    //PVDATA_REFCOUNT_MONITOR_DESTRUCT(status);
+}
+    
+Status::StatusType Status::getType() const
 {
-    if(m_statusType < o.m_statusType) {
-        m_statusType = o.m_statusType;
-        m_message = o.m_message;
-        m_stackDump = o.m_stackDump;
-    }
+    return m_statusType;    
+}
+    
+
+string Status::getMessage() const
+{
+    return m_message;
+}
+    
+string Status::getStackDump() const
+{
+    return m_stackDump;
+}
+    
+bool Status::isOK() const
+{
+    return (m_statusType == STATUSTYPE_OK);
+}
+    
+bool Status::isSuccess() const
+{
+    return (m_statusType == STATUSTYPE_OK || m_statusType == STATUSTYPE_WARNING);
 }
 
 void Status::serialize(ByteBuffer *buffer, SerializableControl *flusher) const
@@ -88,6 +120,18 @@ void Status::dump(std::ostream& o) const
     if (!m_stackDump.empty())
         o << ", stackDump=" << std::endl << m_stackDump;
     o << ']';
+}    
+
+std::ostream& operator<<(std::ostream& o, const Status& status)
+{
+    status.dump(o);
+    return o;
+}
+
+std::ostream& operator<<(std::ostream& o, const Status::StatusType& statusType)
+{
+    o << Status::StatusTypeName[statusType];
+    return o;
 }
 
 }}

src/misc/thread.cpp

@@ -1,147 +0,0 @@
-/* thread.h */
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-#include <epicsThread.h>
-#define epicsExportSharedSymbols
-#include <pv/thread.h>
-#include <pv/reftrack.h>
-
-namespace epics { namespace pvData {
-
-namespace detail {
-struct FuncRunner : public epicsThreadRunable
-{
-    typedef void (*fn_t)(void*);
-    fn_t fn;
-    void *arg;
-    FuncRunner(fn_t f, void *a) :fn(f), arg(a) {}
-    virtual ~FuncRunner(){}
-    virtual void run()
-    {
-        (*fn)(arg);
-    }
-};
-#if __cplusplus>=201103L
-struct BindRunner : public epicsThreadRunable
-{
-    typedef std::function<void()> fn_t;
-    fn_t fn;
-    BindRunner(fn_t&& f) : fn(std::move(f)) {}
-    virtual ~BindRunner() {}
-    virtual void run()
-    {
-        fn();
-    }
-};
-#endif
-} // detail
-
-
-Runnable& Thread::Config::x_getrunner()
-{
-    if(!this->p_runner)
-        throw std::logic_error("Thread::Config missing run()");
-    return *this->p_runner;
-}
-
-void Thread::Config::x_setdefault()
-{
-    this->p_prio = epicsThreadPriorityLow;
-    this->p_autostart = true;
-    this->p_runner = NULL;
-    (*this).stack(epicsThreadStackSmall);
-}
-
-size_t Thread::num_instances;
-
-Thread::Config::Config() {this->x_setdefault();}
-
-Thread::Config::Config(Runnable *r) {this->x_setdefault();this->run(r);}
-
-Thread::Config::Config(void(*fn)(void*), void *ptr) {this->x_setdefault();this->run(fn, ptr);}
-
-#if __cplusplus>=201103L
-Thread::Config::Config(std::function<void()>&& fn) {this->x_setdefault();this->run(std::move(fn));}
-#endif
-
-Thread::Config& Thread::Config::name(const std::string& n)
-{ this->p_strm.str(n); return *this; }
-
-Thread::Config& Thread::Config::prio(unsigned int p)
-{ this->p_prio = p; return *this; }
-
-Thread::Config& Thread::Config::stack(epicsThreadStackSizeClass s)
-{ this->p_stack = epicsThreadGetStackSize(s); return *this; }
-
-Thread::Config& Thread::Config::autostart(bool a)
-{ this->p_autostart = a; return *this; }
-
-Thread::Config& Thread::Config::run(Runnable* r)
-{ this->p_runner = r; return *this; }
-
-Thread::Config& Thread::Config::run(void(*fn)(void*), void *ptr)
-{
-    this->p_owned_runner.reset(new detail::FuncRunner(fn, ptr));
-    this->p_runner = this->p_owned_runner.get();
-    return *this;
-}
-
-#if __cplusplus>=201103L
-Thread::Config& Thread::Config::run(std::function<void()> &&fn)
-{
-    this->p_owned_runner.reset(new detail::BindRunner(std::move(fn)));
-    this->p_runner = this->p_owned_runner.get();
-    return *this;
-}
-#endif
-
-Thread::Thread(std::string name,
-               ThreadPriority priority,
-               Runnable *runnable,
-               epicsThreadStackSizeClass stkcls)
-    :epicsThread(*runnable,
-                 name.c_str(),
-                 epicsThreadGetStackSize(stkcls),
-                 priority)
-{
-    REFTRACE_INCREMENT(num_instances);
-    this->start();
-}
-
-Thread::Thread(Runnable &runnable,
-       std::string name,
-       unsigned int stksize,
-       unsigned int priority)
-    :epicsThread(runnable,
-                 name.c_str(),
-                 stksize,
-                 priority)
-{
-    REFTRACE_INCREMENT(num_instances);
-    this->start();
-}
-
-Thread::Thread(Config& c)
-    :epicsThread(c.x_getrunner(), c.p_strm.str().c_str(),
-                 c.p_stack, c.p_prio)
-{
-    REFTRACE_INCREMENT(num_instances);
-#if __cplusplus>=201103L
-    p_owned = std::move(c.p_owned_runner);
-#else
-    p_owned = c.p_owned_runner;
-#endif
-    if(c.p_autostart)
-        this->start();
-}
-
-Thread::~Thread()
-{
-    this->exitWait();
-    REFTRACE_DECREMENT(num_instances);
-}
-
-}} // epics::pvData

src/misc/timeFunction.cpp

@@ -0,0 +1,51 @@
+/* timeFunction.cpp */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#include <cstddef>
+#include <cstdlib>
+#include <cstddef>
+#include <string>
+#include <cstdio>
+
+#include <epicsTime.h>
+
+#define epicsExportSharedSymbols
+#include <pv/pvType.h>
+#include <pv/timeStamp.h>
+#include <pv/timeFunction.h>
+
+namespace epics { namespace pvData { 
+
+TimeFunction::TimeFunction(TimeFunctionRequesterPtr const &requester)
+: requester(requester) {}
+
+
+TimeFunction::~TimeFunction() {}
+
+double TimeFunction::timeCall()
+{
+    TimeStamp startTime;
+    TimeStamp endTime;
+    double perCall = 0.0;
+    long ntimes = 1;
+    while(true) {
+        startTime.getCurrent();
+        for(long i=0; i<ntimes; i++) requester->function();
+        endTime.getCurrent();
+        double diff = TimeStamp::diff(endTime,startTime);
+        if(diff>=1.0) {
+            perCall = diff/(double)ntimes;
+            break;
+        }
+        ntimes *= 2;
+    }
+    return perCall;
+
+}
+
+}}

src/misc/timer.cpp

@@ -6,13 +6,16 @@
 /**
  *  @author mrk
  */
+ 
+#if defined(_WIN32) && !defined(NOMINMAX)
+#define NOMINMAX
+#endif
 
 #include <stdexcept>
 #include <string>
 #include <iostream>
 
 #include <epicsThread.h>
-#include <epicsGuard.h>
 
 #define epicsExportSharedSymbols
 #include <pv/timer.h>
@@ -28,52 +31,67 @@ TimerCallback::TimerCallback()
 }
 
 Timer::Timer(string threadName,ThreadPriority priority)
-    :waitForWork(false)
-    ,waiting(false)
-    ,alive(true)
-    ,thread(threadName,priority,this)
+: waitForWork(false),
+  waitForDone(false),
+  alive(true),
+  thread(threadName,priority,this)
 {}
 
-struct TimerCallback::IncreasingTime {
-    bool operator()(const TimerCallbackPtr& lhs, const TimerCallbackPtr& rhs) {
-        assert(lhs && rhs);
-        return lhs->timeToRun < rhs->timeToRun;
-    }
-};
-
-// call with mutex held
 void Timer::addElement(TimerCallbackPtr const & timerCallback)
 {
-    assert(!timerCallback->onList);
-
-    queue_t temp;
-    temp.push_back(timerCallback);
-
     timerCallback->onList = true;
-
-    // merge sorted lists.
-    // for us effectively insertion sort.
-    queue.merge(temp, TimerCallback::IncreasingTime());
+    if(head.get()==NULL) {
+        head = timerCallback;
+        timerCallback->next.reset();
+        return;
+    }
+    TimerCallbackPtr nextNode(head);
+    TimerCallbackPtr prevNode;
+    while(true) {
+        if(timerCallback->timeToRun < nextNode->timeToRun) {
+            if(prevNode.get()!=NULL) {
+                prevNode->next = timerCallback;
+            } else {
+                head = timerCallback;
+            }
+            timerCallback->next = nextNode;
+            return;
+        }
+        if(nextNode->next.get()==NULL) {
+            nextNode->next = timerCallback;
+            timerCallback->next.reset();
+            return;
+        }
+        prevNode = nextNode;
+        nextNode = nextNode->next;
+    }
 }
 
 
-bool Timer::cancel(TimerCallbackPtr const &timerCallback)
+void Timer::cancel(TimerCallbackPtr const &timerCallback)
 {
     Lock xx(mutex);
-    if(!timerCallback->onList) return false;
-    for(queue_t::iterator it(queue.begin()), end(queue.end()); it != end; ++it)
-    {
-        TimerCallbackPtr& cur = *it;
-        if(cur.get() == timerCallback.get()) {
-            cur->onList = false;
-            queue.erase(it); // invalidates cur and it
-            return true;
+    if(!timerCallback->onList) return;
+    TimerCallbackPtr nextNode(head);
+    TimerCallbackPtr prevNode;
+    while(true) {
+        if(nextNode.get()==timerCallback.get()) {
+            if(prevNode.get()!=NULL) {
+                prevNode->next = timerCallback->next;
+            } else {
+                head = timerCallback->next;
+            }
+            timerCallback->next.reset();
+            timerCallback->onList = false;
+            return;
         }
+        prevNode = nextNode;
+        nextNode = nextNode->next;
     }
-    throw std::logic_error("Timer::cancel() onList==true, but not found");
+    throw std::logic_error(string(""));
 }
 
-bool Timer::isScheduled(TimerCallbackPtr const &timerCallback) const
+bool Timer::isScheduled(TimerCallbackPtr const &timerCallback)
 {
     Lock xx(mutex);
     return timerCallback->onList;
@@ -82,75 +100,63 @@ bool Timer::isScheduled(TimerCallbackPtr const &timerCallback) const
 
 void Timer::run()
 {
-    epicsGuard<epicsMutex> G(mutex);
-
-    epicsTime now(epicsTime::getCurrent());
-
-    while(alive) {
-        double waitfor;
-
-        if(queue.empty()) {
-            // no jobs, just go to sleep
-            waiting = true;
-            epicsGuardRelease<epicsMutex> U(G);
-
+    TimeStamp currentTime;
+    while(true) {
+         double period = 0.0;
+         TimerCallbackPtr nodeToCall;
+         {
+             Lock xx(mutex);
+             currentTime.getCurrent();
+             if (!alive) break;
+             TimerCallbackPtr timerCallback = head;
+             if(timerCallback.get()!=NULL) {
+                 double diff = TimeStamp::diff(
+                     timerCallback->timeToRun,currentTime);
+                 if(diff<=0.0) {
+                     nodeToCall = timerCallback;
+                     nodeToCall->onList = false;
+                     head = head->next;
+                     period = timerCallback->period;
+                     if(period>0.0) {
+                         timerCallback->timeToRun += period;
+                         addElement(timerCallback);
+                     }
+                     timerCallback = head;
+                 }
+             }
+         }
+         if(nodeToCall.get()!=NULL) {
+             nodeToCall->callback();
+         }
+         {
+             Lock xx(mutex);
+             if(!alive) break;
+         }
+         if(head.get()==NULL) {
             waitForWork.wait();
-            now = epicsTime::getCurrent();
-
-        } else if((waitfor = queue.front()->timeToRun - now) <= 0) {
-            // execute first expired job
-
-            TimerCallbackPtr work;
-            work.swap(queue.front());
-            work->onList = false;
-            queue.pop_front();
-
-            {
-                epicsGuardRelease<epicsMutex> U(G);
-
-                work->callback();
-            }
-
-            if(work->period > 0.0) {
-                work->timeToRun += work->period;
-                addElement(work);
-            }
-
-            // don't update 'now' until all expired jobs run
-
-        } else {
-            waiting = true;
-            // wait for first un-expired
-            epicsGuardRelease<epicsMutex> U(G);
-
-            waitForWork.wait(waitfor);
-            now = epicsTime::getCurrent();
-        }
-        waiting = false;
-    }
+         } else {
+             double delay = TimeStamp::diff(head->timeToRun,currentTime);
+             waitForWork.wait(delay);
+         }
+    } 
+    waitForDone.signal();
 }
 
 Timer::~Timer() {
-    close();
-}
-
-void Timer::close() {
     {
          Lock xx(mutex);
-         if(!alive)
-             return; // already closed
          alive = false;
     }
     waitForWork.signal();
-    thread.exitWait();
-
-    queue_t temp;
-    temp.swap(queue);
-
-    for(;!temp.empty(); temp.pop_front()) {
-        TimerCallbackPtr& head = temp.front();
-        head->onList = false;
+    waitForDone.wait();
+    TimerCallbackPtr timerCallback;
+    while(true) {
+        timerCallback = head;
+        if(head.get()==NULL) break;
         head->timerStopped();
+        head = timerCallback->next;
+        timerCallback->next.reset();
+        timerCallback->onList = false;
     }
 }
 
@@ -166,44 +172,49 @@ void Timer::schedulePeriodic(
     double delay,
     double period)
 {
-    epicsTime now(epicsTime::getCurrent());
-
-    bool wakeup;
+    if(isScheduled(timerCallback)) {
+        throw std::logic_error(string("already queued"));
+    }
     {
         Lock xx(mutex);
-        if(timerCallback->onList) {
-            throw std::logic_error(string("already queued"));
-        }
-
         if(!alive) {
-            xx.unlock();
             timerCallback->timerStopped();
             return;
         }
-
-        timerCallback->timeToRun = now + delay;
-        timerCallback->period = period;
-
-        addElement(timerCallback);
-        wakeup = waiting && queue.front()==timerCallback;
     }
-    if(wakeup) waitForWork.signal();
+    TimeStamp timeStamp;
+    timeStamp.getCurrent();
+    timeStamp += delay;
+    timerCallback->timeToRun.getCurrent();
+    timerCallback->timeToRun += delay;
+    timerCallback->period = period;
+    bool isFirst = false;
+    {
+        Lock xx(mutex);
+        addElement(timerCallback);
+        if(timerCallback.get()==head.get()) isFirst = true;
+    }
+    if(isFirst) waitForWork.signal();
 }
 
-void Timer::dump(std::ostream& o) const
+void Timer::dump(std::ostream& o)
 {
     Lock xx(mutex);
     if(!alive) return;
-    epicsTime now(epicsTime::getCurrent());
-
-    for(queue_t::const_iterator it(queue.begin()), end(queue.end()); it!=end; ++it) {
-        const TimerCallbackPtr& nodeToCall = *it;
-        o << "timeToRun " << (nodeToCall->timeToRun - now)
-          << " period " << nodeToCall->period << "\n";
-    }
+    TimeStamp currentTime;
+    TimerCallbackPtr nodeToCall(head);
+    currentTime.getCurrent();
+    while(true) {
+         if(nodeToCall.get()==NULL) return;
+         TimeStamp timeToRun = nodeToCall->timeToRun;
+         double period = nodeToCall->period;
+         double diff = TimeStamp::diff(timeToRun,currentTime);
+         o << "timeToRun " << diff << " period " << period << std::endl;
+         nodeToCall = nodeToCall->next;
+     }
 }
 
-std::ostream& operator<<(std::ostream& o, const Timer& timer)
+std::ostream& operator<<(std::ostream& o, Timer& timer)
 {
     timer.dump(o);
     return o;

src/misc/typeCast.cpp

@@ -6,8 +6,6 @@
 #include <algorithm>
 #include <sstream>
 
-#include <string.h>
-
 #include <epicsConvert.h>
 
 #define epicsExportSharedSymbols
@@ -20,7 +18,7 @@ using std::string;
 
 namespace {
 
-static void noconvert()
+static void noconvert(size_t, void*, const void*)
 {
     throw std::runtime_error("castUnsafeV: Conversion not supported");
 }
@@ -33,10 +31,12 @@ static void castVTyped(size_t count, void *draw, const void *sraw)
     
     //std::transform(src, src+count, dest, castUnsafe<TO,FROM>);
     
+    const FROM *last = src+count;
     try {
-        for(size_t i=0; i<count; i++) {
-            dest[i] = castUnsafe<TO,FROM>(src[i]);
-        }
+        while (src != last) {
+          *dest = castUnsafe<TO,FROM>(*src);
+          ++dest; ++src;
+        }    
     } catch (std::exception& ex) {
         // do not report index for scalars (or arrays with one element)
         if (count > 1)
@@ -55,15 +55,186 @@ template<typename T>
 static void copyV(size_t count, void *draw, const void *sraw)
 {
     T *dest=(T*)draw;
-    const T *src=(const T*)sraw;
+    const T *src=(T*)sraw;
     std::copy(src, src+count, dest);
 }
 
-template<int N>
-static void copyMem(size_t count, void *draw, const void *sraw)
+typedef void (*convertfn)(size_t, void*, const void*);
+
+/* lookup table of converter functions.
+ * first dimension is TO, second is FROM
+ */
+static convertfn converters[pvString+1][pvString+1] =
 {
-    memcpy(draw, sraw, count*N);
-}
+    // to pvBoolean
+    { &copyV<epics::pvData::boolean>,
+      &noconvert,
+      &noconvert,
+      &noconvert,
+      &noconvert,
+      &noconvert,
+      &noconvert,
+      &noconvert,
+      &noconvert,
+      &noconvert,
+      &noconvert,
+      &castVTyped<epics::pvData::boolean, string>,
+    },
+    // to pvByte
+    {&noconvert,
+     &copyV<int8_t>,
+     &castVTyped<int8_t, int16_t>,
+     &castVTyped<int8_t, int32_t>,
+     &castVTyped<int8_t, int64_t>,
+     &castVTyped<int8_t, uint8_t>,
+     &castVTyped<int8_t, uint16_t>,
+     &castVTyped<int8_t, uint32_t>,
+     &castVTyped<int8_t, uint64_t>,
+     &castVTyped<int8_t, float>,
+     &castVTyped<int8_t, double>,
+     &castVTyped<int8_t, string>,
+    },
+    // to pvShort
+    {&noconvert,
+     &castVTyped<int16_t, int8_t>,
+     &copyV<int16_t>,
+     &castVTyped<int16_t, int32_t>,
+     &castVTyped<int16_t, int64_t>,
+     &castVTyped<int16_t, uint8_t>,
+     &castVTyped<int16_t, uint16_t>,
+     &castVTyped<int16_t, uint32_t>,
+     &castVTyped<int16_t, uint64_t>,
+     &castVTyped<int16_t, float>,
+     &castVTyped<int16_t, double>,
+     &castVTyped<int16_t, string>,
+    },
+    // to pvInt
+    {&noconvert,
+     &castVTyped<int32_t, int8_t>,
+     &castVTyped<int32_t, int16_t>,
+     &copyV<int32_t>,
+     &castVTyped<int32_t, int64_t>,
+     &castVTyped<int32_t, uint8_t>,
+     &castVTyped<int32_t, uint16_t>,
+     &castVTyped<int32_t, uint32_t>,
+     &castVTyped<int32_t, uint64_t>,
+     &castVTyped<int32_t, float>,
+     &castVTyped<int32_t, double>,
+     &castVTyped<int32_t, string>,
+    },
+    // to pvLong
+    {&noconvert,
+     &castVTyped<int64_t, int8_t>,
+     &castVTyped<int64_t, int16_t>,
+     &castVTyped<int64_t, int32_t>,
+     &copyV<int64_t>,
+     &castVTyped<int64_t, uint8_t>,
+     &castVTyped<int64_t, uint16_t>,
+     &castVTyped<int64_t, uint32_t>,
+     &castVTyped<int64_t, uint64_t>,
+     &castVTyped<int64_t, float>,
+     &castVTyped<int64_t, double>,
+     &castVTyped<int64_t, string>,
+    },
+    // to pvUByte
+    {&noconvert,
+     &castVTyped<uint8_t, int8_t>,
+     &castVTyped<uint8_t, int16_t>,
+     &castVTyped<uint8_t, int32_t>,
+     &castVTyped<uint8_t, uint64_t>,
+     &copyV<uint8_t>,
+     &castVTyped<uint8_t, uint16_t>,
+     &castVTyped<uint8_t, uint32_t>,
+     &castVTyped<uint8_t, uint64_t>,
+     &castVTyped<uint8_t, float>,
+     &castVTyped<uint8_t, double>,
+     &castVTyped<uint8_t, string>,
+    },
+    // to pvUShort
+    {&noconvert,
+     &castVTyped<uint16_t, int8_t>,
+     &castVTyped<uint16_t, int16_t>,
+     &castVTyped<uint16_t, int32_t>,
+     &castVTyped<uint16_t, uint64_t>,
+     &castVTyped<uint16_t, uint8_t>,
+     &copyV<uint16_t>,
+     &castVTyped<uint16_t, uint32_t>,
+     &castVTyped<uint16_t, uint64_t>,
+     &castVTyped<uint16_t, float>,
+     &castVTyped<uint16_t, double>,
+     &castVTyped<uint16_t, string>,
+    },
+    // to pvUInt
+    {&noconvert,
+     &castVTyped<uint32_t, int8_t>,
+     &castVTyped<uint32_t, int16_t>,
+     &castVTyped<uint32_t, int32_t>,
+     &castVTyped<uint32_t, uint64_t>,
+     &castVTyped<uint32_t, uint8_t>,
+     &castVTyped<uint32_t, uint16_t>,
+     &copyV<uint32_t>,
+     &castVTyped<uint32_t, uint64_t>,
+     &castVTyped<uint32_t, float>,
+     &castVTyped<uint32_t, double>,
+     &castVTyped<uint32_t, string>,
+    },
+    // to pvULong
+    {&noconvert,
+     &castVTyped<uint64_t, int8_t>,
+     &castVTyped<uint64_t, int16_t>,
+     &castVTyped<uint64_t, int32_t>,
+     &castVTyped<uint64_t, uint64_t>,
+     &castVTyped<uint64_t, uint8_t>,
+     &castVTyped<uint64_t, uint16_t>,
+     &castVTyped<uint64_t, uint32_t>,
+     &copyV<uint64_t>,
+     &castVTyped<uint64_t, float>,
+     &castVTyped<uint64_t, double>,
+     &castVTyped<uint64_t, string>,
+    },
+    // to pvFloat
+    {&noconvert,
+     &castVTyped<float, int8_t>,
+     &castVTyped<float, int16_t>,
+     &castVTyped<float, int32_t>,
+     &castVTyped<float, uint64_t>,
+     &castVTyped<float, uint8_t>,
+     &castVTyped<float, uint16_t>,
+     &castVTyped<float, uint32_t>,
+     &castVTyped<float, uint64_t>,
+     &copyV<float>,
+     &castVTyped<float, double>,
+     &castVTyped<float, string>,
+    },
+    // to pvDouble
+    {&noconvert,
+     &castVTyped<double, int8_t>,
+     &castVTyped<double, int16_t>,
+     &castVTyped<double, int32_t>,
+     &castVTyped<double, uint64_t>,
+     &castVTyped<double, uint8_t>,
+     &castVTyped<double, uint16_t>,
+     &castVTyped<double, uint32_t>,
+     &castVTyped<double, uint64_t>,
+     &castVTyped<double, float>,
+     &copyV<double>,
+     &castVTyped<double, string>,
+    },
+    // to pvString
+    {&castVTyped<string, epics::pvData::boolean>,
+     &castVTyped<string, int8_t>,
+     &castVTyped<string, int16_t>,
+     &castVTyped<string, int32_t>,
+     &castVTyped<string, uint64_t>,
+     &castVTyped<string, uint8_t>,
+     &castVTyped<string, uint16_t>,
+     &castVTyped<string, uint32_t>,
+     &castVTyped<string, uint64_t>,
+     &castVTyped<string, float>,
+     &castVTyped<string, double>,
+     &copyV<string>,
+    },
+};
 
 } // end namespace
 
@@ -71,207 +242,12 @@ namespace epics { namespace pvData {
 
 void castUnsafeV(size_t count, ScalarType to, void *dest, ScalarType from, const void *src)
 {
-#define COPYMEM(N) copyMem<N>(count, dest, src)
-#define CAST(TO, FROM) castVTyped<TO, FROM>(count, dest, src)
+    unsigned int ito=to, ifrom=from;
 
-    switch(to) {
-    case pvBoolean:
-        switch(from) {
-        case pvBoolean: COPYMEM(1); return;
-        case pvString: CAST(boolean, std::string); return;
-        default: noconvert(); return;
-        }
-        break;
+    if(ito>pvString || ifrom>pvString)
+        throw std::runtime_error("castUnsafeV: Invalid types");
 
-    case pvByte:
-        switch(from) {
-        case pvBoolean: noconvert(); return;
-        case pvByte:
-        case pvUByte:   COPYMEM(1); return;
-        case pvShort:   CAST(int8, int16); return;
-        case pvUShort:  CAST(int8, uint16); return;
-        case pvInt:     CAST(int8, int32); return;
-        case pvUInt:    CAST(int8, uint32); return;
-        case pvLong:    CAST(int8, int64); return;
-        case pvULong:   CAST(int8, uint64); return;
-        case pvFloat:   CAST(int8, float); return;
-        case pvDouble:  CAST(int8, double); return;
-        case pvString:  CAST(int8, std::string); return;
-        }
-        break;
-
-    case pvUByte:
-        switch(from) {
-        case pvBoolean: noconvert(); return;
-        case pvByte:
-        case pvUByte:   COPYMEM(1); return;
-        case pvShort:   CAST(uint8, int16); return;
-        case pvUShort:  CAST(uint8, uint16); return;
-        case pvInt:     CAST(uint8, int32); return;
-        case pvUInt:    CAST(uint8, uint32); return;
-        case pvLong:    CAST(uint8, int64); return;
-        case pvULong:   CAST(uint8, uint64); return;
-        case pvFloat:   CAST(uint8, float); return;
-        case pvDouble:  CAST(uint8, double); return;
-        case pvString:  CAST(uint8, std::string); return;
-        }
-        break;
-
-    case pvShort:
-        switch(from) {
-        case pvBoolean: noconvert(); return;
-        case pvByte:    CAST(int16, int8); return;
-        case pvUByte:   CAST(int16, uint8); return;
-        case pvShort:
-        case pvUShort:  COPYMEM(2); return;
-        case pvInt:     CAST(int16, int32); return;
-        case pvUInt:    CAST(int16, uint32); return;
-        case pvLong:    CAST(int16, int64); return;
-        case pvULong:   CAST(int16, uint64); return;
-        case pvFloat:   CAST(int16, float); return;
-        case pvDouble:  CAST(int16, double); return;
-        case pvString:  CAST(int16, std::string); return;
-        }
-        break;
-
-    case pvUShort:
-        switch(from) {
-        case pvBoolean: noconvert(); return;
-        case pvByte:    CAST(uint16, int8); return;
-        case pvUByte:   CAST(uint16, uint8); return;
-        case pvShort:
-        case pvUShort:  COPYMEM(2); return;
-        case pvInt:     CAST(uint16, int32); return;
-        case pvUInt:    CAST(uint16, uint32); return;
-        case pvLong:    CAST(uint16, int64); return;
-        case pvULong:   CAST(uint16, uint64); return;
-        case pvFloat:   CAST(uint16, float); return;
-        case pvDouble:  CAST(uint16, double); return;
-        case pvString:  CAST(uint16, std::string); return;
-        }
-        break;
-
-    case pvInt:
-        switch(from) {
-        case pvBoolean: noconvert(); return;
-        case pvByte:    CAST(int32, int8); return;
-        case pvUByte:   CAST(int32, uint8); return;
-        case pvShort:   CAST(int32, int16); return;
-        case pvUShort:  CAST(int32, uint16); return;
-        case pvInt:
-        case pvUInt:    COPYMEM(4); return;
-        case pvLong:    CAST(int32, int64); return;
-        case pvULong:   CAST(int32, uint64); return;
-        case pvFloat:   CAST(int32, float); return;
-        case pvDouble:  CAST(int32, double); return;
-        case pvString:  CAST(int32, std::string); return;
-        }
-        break;
-
-    case pvUInt:
-        switch(from) {
-        case pvBoolean: noconvert(); return;
-        case pvByte:    CAST(uint32, int8); return;
-        case pvUByte:   CAST(uint32, uint8); return;
-        case pvShort:   CAST(uint32, int16); return;
-        case pvUShort:  CAST(uint32, uint16); return;
-        case pvInt:
-        case pvUInt:    COPYMEM(4); return;
-        case pvLong:    CAST(uint32, int64); return;
-        case pvULong:   CAST(uint32, uint64); return;
-        case pvFloat:   CAST(uint32, float); return;
-        case pvDouble:  CAST(uint32, double); return;
-        case pvString:  CAST(uint32, std::string); return;
-        }
-        break;
-
-    case pvLong:
-        switch(from) {
-        case pvBoolean: noconvert(); return;
-        case pvByte:    CAST(int64, int8); return;
-        case pvUByte:   CAST(int64, uint8); return;
-        case pvShort:   CAST(int64, int16); return;
-        case pvUShort:  CAST(int64, uint16); return;
-        case pvInt:     CAST(int64, int32); return;
-        case pvUInt:    CAST(int64, uint32); return;
-        case pvLong:
-        case pvULong:   COPYMEM(8); return;
-        case pvFloat:   CAST(int64, float); return;
-        case pvDouble:  CAST(int64, double); return;
-        case pvString:  CAST(int64, std::string); return;
-        }
-        break;
-
-    case pvULong:
-        switch(from) {
-        case pvBoolean: noconvert(); return;
-        case pvByte:    CAST(uint64, int8); return;
-        case pvUByte:   CAST(uint64, uint8); return;
-        case pvShort:   CAST(uint64, int16); return;
-        case pvUShort:  CAST(uint64, uint16); return;
-        case pvInt:     CAST(uint64, int32); return;
-        case pvUInt:    CAST(uint64, uint32); return;
-        case pvLong:
-        case pvULong:   COPYMEM(8); return;
-        case pvFloat:   CAST(uint64, float); return;
-        case pvDouble:  CAST(uint64, double); return;
-        case pvString:  CAST(uint64, std::string); return;
-        }
-        break;
-
-    case pvFloat:
-        switch(from) {
-        case pvBoolean: noconvert(); return;
-        case pvByte:    CAST(float, int8); return;
-        case pvUByte:   CAST(float, uint8); return;
-        case pvShort:   CAST(float, int16); return;
-        case pvUShort:  CAST(float, uint16); return;
-        case pvInt:     CAST(float, int32); return;
-        case pvUInt:    CAST(float, uint32); return;
-        case pvLong:    CAST(float, int64); return;
-        case pvULong:   CAST(float, uint64); return;
-        case pvFloat:   COPYMEM(4); return;
-        case pvDouble:  CAST(float, double); return;
-        case pvString:  CAST(float, std::string); return;
-        }
-        break;
-
-    case pvDouble:
-        switch(from) {
-        case pvBoolean: noconvert(); return;
-        case pvByte:    CAST(double, int8); return;
-        case pvUByte:   CAST(double, uint8); return;
-        case pvShort:   CAST(double, int16); return;
-        case pvUShort:  CAST(double, uint16); return;
-        case pvInt:     CAST(double, int32); return;
-        case pvUInt:    CAST(double, uint32); return;
-        case pvLong:    CAST(double, int64); return;
-        case pvULong:   CAST(double, uint64); return;
-        case pvFloat:   CAST(double, float); return;
-        case pvDouble:  COPYMEM(8); return;
-        case pvString:  CAST(double, std::string); return;
-        }
-        break;
-
-    case pvString:
-        switch(from) {
-        case pvBoolean: CAST(std::string, boolean); return;
-        case pvByte:    CAST(std::string, int8); return;
-        case pvUByte:   CAST(std::string, uint8); return;
-        case pvShort:   CAST(std::string, int16); return;
-        case pvUShort:  CAST(std::string, uint16); return;
-        case pvInt:     CAST(std::string, int32); return;
-        case pvUInt:    CAST(std::string, uint32); return;
-        case pvLong:    CAST(std::string, int64); return;
-        case pvULong:   CAST(std::string, uint64); return;
-        case pvFloat:   CAST(std::string, float); return;
-        case pvDouble:  CAST(std::string, double); return;
-        case pvString:  copyV<std::string>(count, dest, src); return;
-        }
-        break;
-    }
-
-    THROW_EXCEPTION2(std::logic_error, "Undefined cast");
+    converters[ito][ifrom](count, dest, src);
 }
 
 }}

src/monitor/Makefile

@@ -0,0 +1,9 @@
+# This is a Makefile fragment, see ../Makefile
+
+SRC_DIRS += $(PVDATA_SRC)/monitor
+
+INC += pv/monitor.h
+INC += pv/monitorPlugin.h
+
+LIBSRCS += monitor.cpp
+LIBSRCS += monitorPlugin.cpp

src/monitor/monitor.cpp

@@ -0,0 +1,13 @@
+/*monitor.cpp*/
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mse
+ */
+
+#define epicsExportSharedSymbols
+
+// needed to get interfaces exported
+#include <pv/monitor.h>

src/monitor/monitorPlugin.cpp

@@ -0,0 +1,86 @@
+/* monitorPlugin.cpp */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+
+#define IN_MONITORPLUGIN_CPP
+#define epicsExportSharedSymbols
+
+#include <pv/monitorPlugin.h>
+
+using std::string;
+using std::cout;
+using std::endl;
+
+namespace epics { namespace pvData { 
+
+MonitorPluginManagerPtr MonitorPluginManager::get()
+{
+    static MonitorPluginManagerPtr pluginManager;
+    static Mutex mutex;
+    Lock xx(mutex);
+    if(!pluginManager) {
+        pluginManager = MonitorPluginManagerPtr(new MonitorPluginManager());
+    }
+    return pluginManager;
+}
+
+bool MonitorPluginManager::addPlugin(
+    string const &pluginName,
+    MonitorPluginCreatorPtr const &creator)
+{
+    mutex.lock();
+    std::list<MonitorPluginCreatorPtr>::iterator iter;
+    for (iter = monitorPluginList.begin();iter!=monitorPluginList.end();iter++)
+    {
+        if(*iter==creator)
+        {
+            mutex.unlock();
+            return false;
+        }
+        if(((*iter)->getName().compare(pluginName))==0) 
+        {
+            mutex.unlock();
+            return false;
+        }
+    }
+    monitorPluginList.push_back(creator);
+    mutex.unlock();
+    return true;
+}
+
+
+MonitorPluginCreatorPtr MonitorPluginManager::findPlugin(
+    string const &pluginName)
+{
+    mutex.lock();
+    std::list<MonitorPluginCreatorPtr>::iterator iter;
+    for (iter = monitorPluginList.begin();iter!=monitorPluginList.end();++iter)
+    {
+        if(((*iter)->getName().compare(pluginName))==0) 
+        {
+            mutex.unlock();
+            return *iter;
+        }
+    }
+    mutex.unlock();
+    return MonitorPluginCreatorPtr();
+}
+
+void MonitorPluginManager::showNames()
+{
+    mutex.lock();
+    std::list<MonitorPluginCreatorPtr>::iterator iter;
+    for (iter = monitorPluginList.begin();iter!=monitorPluginList.end();++iter)
+    {
+        std::cout << (*iter)->getName() << std::endl;
+    }
+    mutex.unlock();
+}
+
+
+}}

src/monitor/pv/monitor.h

@@ -0,0 +1,118 @@
+/* monitor.h */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#ifndef MONITOR_H
+#define MONITOR_H
+
+#include <pv/status.h>
+#include <pv/destroyable.h>
+#include <pv/pvData.h>
+#include <pv/sharedPtr.h>
+#include <pv/bitSet.h>
+#include <pv/requester.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvData { 
+
+class MonitorElement;
+typedef std::tr1::shared_ptr<MonitorElement> MonitorElementPtr;
+typedef std::vector<MonitorElementPtr> MonitorElementPtrArray;
+
+class Monitor;
+typedef std::tr1::shared_ptr<Monitor> MonitorPtr;
+
+
+/**
+ * @brief An element for a monitorQueue.
+ *
+ * Class instance representing monitor element.
+ * @author mrk
+ */
+class epicsShareClass MonitorElement {
+    public:
+    POINTER_DEFINITIONS(MonitorElement);
+    MonitorElement(){}
+    MonitorElement(PVStructurePtr const & pvStructurePtr)
+    : pvStructurePtr(pvStructurePtr),
+      changedBitSet(BitSet::create(static_cast<uint32>(pvStructurePtr->getNumberFields()))),
+      overrunBitSet(BitSet::create(static_cast<uint32>(pvStructurePtr->getNumberFields())))
+    {}
+    PVStructurePtr pvStructurePtr;
+    BitSet::shared_pointer changedBitSet;
+    BitSet::shared_pointer overrunBitSet;
+};
+
+/**
+ * @brief Monitor changes to fields of a pvStructure.
+ *
+ * This is used by pvAccess to implement monitors.
+ * @author mrk
+ */
+class epicsShareClass Monitor : public Destroyable{
+    public:
+    POINTER_DEFINITIONS(Monitor);
+    virtual ~Monitor(){}
+    /**
+     * Start monitoring.
+     * @return completion status.
+     */
+    virtual Status start() = 0;
+    /**
+     * Stop Monitoring.
+     * @return completion status.
+     */
+    virtual Status stop() = 0;
+    /**
+     * If monitor has occurred return data.
+     * @return monitorElement for modified data.
+     * Must call get to determine if data is available.
+     */
+    virtual MonitorElementPtr poll() = 0;
+    /**
+     * Release a MonitorElement that was returned by poll.
+     * A poll() must be called after the release() to check the presence of any modified data.
+     * @param monitorElement
+     */
+    virtual void release(MonitorElementPtr const & monitorElement) = 0;
+};
+
+
+/**
+ * @brief Callback implemented by monitor clients.
+ *
+ * Requester for ChannelMonitor.
+ * @author mrk
+ */
+class epicsShareClass MonitorRequester : public virtual Requester {
+    public:
+    POINTER_DEFINITIONS(MonitorRequester);
+    virtual ~MonitorRequester(){}
+    /**
+     * The client and server have both completed the createMonitor request.
+     * @param status Completion status.
+     * @param monitor The monitor
+     * @param structure The structure defining the data.
+     */
+    virtual void monitorConnect(Status const & status,
+        MonitorPtr const & monitor, StructureConstPtr const & structure) = 0;
+    /**
+     * A monitor event has occurred.
+     * The requester must call Monitor.poll to get data.
+     * @param monitor The monitor.
+     */
+    virtual void monitorEvent(MonitorPtr const & monitor) = 0;
+    /**
+     * The data source is no longer available.
+     * @param monitor The monitor.
+     */
+    virtual void unlisten(MonitorPtr const & monitor) = 0;
+};
+
+}}
+#endif  /* MONITOR_H */

src/monitor/pv/monitorPlugin.h

@@ -0,0 +1,180 @@
+/* monitorPlugin.h */
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+/**
+ *  @author mrk
+ */
+#ifndef MONITORPLUGIN_H
+#define MONITORPLUGIN_H
+
+#include <list>
+#include <pv/pvData.h>
+#include <pv/sharedPtr.h>
+#include <pv/bitSet.h>
+#include <pv/monitor.h>
+
+#include <shareLib.h>
+
+#if !defined(IN_MONITORPLUGIN_CPP)
+#warning monitorPlugin.h is deprecated
+#endif
+
+#if !defined(IN_MONITORPLUGIN_CPP) && defined(__GNUC__) && !(defined(__vxworks) && !defined(_WRS_VXWORKS_MAJOR))
+#define USAGE_DEPRECATED __attribute__((deprecated))
+#else
+#define USAGE_DEPRECATED
+#endif
+
+namespace epics { namespace pvData { 
+
+class MonitorPlugin;
+typedef std::tr1::shared_ptr<MonitorPlugin> MonitorPluginPtr;
+
+
+class MonitorPluginCreator;
+typedef std::tr1::shared_ptr<MonitorPluginCreator> MonitorPluginCreatorPtr;
+
+
+class MonitorPluginManager;
+typedef std::tr1::shared_ptr<MonitorPluginManager> MonitorPluginManagerPtr;
+        
+
+/**
+ * @brief A plugin for raising monitors;
+ *
+ * This is for use by pvAccess servers that support monitors.
+ * Since the interface has only a dependence on pvData it
+ * can be used for other purposes.
+ * A monitor is assumed to be associated with a field of a top-level
+ * structure.
+ */
+class epicsShareClass USAGE_DEPRECATED MonitorPlugin
+{
+public:
+    virtual ~MonitorPlugin(){}
+    /**
+     * getName
+     * @returns The name of the plugin
+     */
+    virtual std::string const & getName() = 0;
+    /**
+     * Should a monitor be raised?
+     * @param pvField The field being monitored.
+     * @param pvTop The top-level structure in which the field resides.
+     * @param monitorElement The client data and bitsets.
+     * @returns true or false.
+     * True is returned if the change to this field should cause a monitor.
+     * False is returned in a change only to this field should not cause a
+     * monitor.
+     */
+    virtual bool causeMonitor(
+        PVFieldPtr const &pvField,
+        PVStructurePtr const &pvTop,
+        MonitorElementPtr const &monitorElement) = 0;
+    /**
+     * A monitor will be sent to the client.
+     * @param monitorElement The data for the client.
+     * The plugin is allowed to change the data values.
+     */
+    virtual void monitorDone(
+        MonitorElementPtr const &monitorElement)
+        {}
+    /**
+     * Begin monitoring
+     */
+    virtual void startMonitoring(){}
+    /**
+     * Stop monitoring
+     */
+    virtual void stopMonitoring(){}
+    /**
+     * Begin a set of puts.
+     */
+    virtual void beginGroupPut() {};
+    /**
+     * End a set of puts.
+     */
+    virtual void endGroupPut() {};
+};
+
+/**
+ * @brief  A class that creates a plugin.
+ *
+ * Normlly a plugin is created for a single client.
+ */
+class epicsShareClass USAGE_DEPRECATED MonitorPluginCreator
+{
+public:
+    virtual ~MonitorPluginCreator() {}
+    /**
+     * Create a monitor plugin.
+     * @param field The introspection interface for the field monitored.
+     * @param top The introspection interface for the client structure.
+     * @param pvFieldOptions The options the client requested.
+     * The structure has a set of PVString subfields.
+     * The options are a set of name,value pairs.
+     * The subfield name is the name and the subfield value is the value.
+     * @returns shared pointer to a MonitorPluginCreator.
+     */
+    virtual MonitorPluginPtr create(
+        FieldConstPtr const &field,
+        StructureConstPtr const &top,
+        PVStructurePtr const &pvFieldOptions) = 0;
+    /**
+     * getName
+     * @returns The name of the plugin
+     */
+    virtual std::string const & getName() = 0;
+};
+    
+
+/**
+ * @brief Manager for plugins.
+ *
+ * This manages a set of monitor plugins.
+ * @author mrk
+ */
+class epicsShareClass USAGE_DEPRECATED MonitorPluginManager
+{
+public:
+    POINTER_DEFINITIONS(MonitorPluginManager);
+    /**
+     * Factory to get the  manager.
+     * @return shared pointer to manager.
+     */
+    static MonitorPluginManagerPtr get();
+    /** destructor
+     */
+    ~MonitorPluginManager(){}
+    /* add plugin
+     * @param pluginName The name of the plugin.
+     * @param creator The creator.
+     * @returns true or false
+     * false is returned if a plugin with that name is already present
+     */
+     bool addPlugin(
+         std::string const &pluginName,
+         MonitorPluginCreatorPtr const &creator);
+    /* find plugin
+     * 
+     * @param plugin name
+     * @returns share pointer to plugin creator.
+     * If a plugin with that name is not found NULL is returned.
+     */
+     MonitorPluginCreatorPtr findPlugin(std::string const &pluginName);
+    /* showNames
+     * 
+     */
+    void showNames();
+private:
+     MonitorPluginManager(){}
+     std::list<MonitorPluginCreatorPtr> monitorPluginList;
+     epics::pvData::Mutex mutex;
+};
+
+#undef USAGE_DEPRECATED
+
+}}
+#endif  /* MONITORPLUGIN_H */

src/property/pv/timeStamp.h

@@ -19,10 +19,10 @@
 
 namespace epics { namespace pvData { 
 
-epicsShareExtern const int32 milliSecPerSec;
-epicsShareExtern const int32 microSecPerSec;
-epicsShareExtern const int32 nanoSecPerSec;
-epicsShareExtern const int64 posixEpochAtEpicsEpoch;
+epicsShareExtern int32 milliSecPerSec;
+epicsShareExtern int32 microSecPerSec;
+epicsShareExtern int32 nanoSecPerSec;
+epicsShareExtern int64 posixEpochAtEpicsEpoch;
 
 /** @brief Methods for manipulating timeStamp.
  * 
@@ -98,7 +98,7 @@ public:
      * Set userTag.
      * @param userTag application specific.
      */
-    void setUserTag(int32 userTag) {this->userTag = userTag;}
+    void setUserTag(int userTag) {this->userTag = userTag;}
     /**
      * Set time fields in timeStamp.
      * Result will be normalized.

src/property/pvAlarm.cpp

@@ -72,25 +72,10 @@ bool PVAlarm::set(Alarm const & alarm)
         throw std::logic_error(notAttached);
     }
     if(pvSeverity->isImmutable() || pvMessage->isImmutable()) return false;
-    Alarm current;
-    get(current);
-    bool returnValue = false;
-    if(current.getSeverity()!=alarm.getSeverity())
-    {
-        pvSeverity->put(alarm.getSeverity());
-        returnValue = true;
-    }
-    if(current.getStatus()!=alarm.getStatus())
-    {
-        pvStatus->put(alarm.getStatus());
-        returnValue = true;
-    }
-    if(current.getMessage()!=alarm.getMessage())
-    {
-        pvMessage->put(alarm.getMessage());
-        returnValue = true;
-    }
-    return returnValue;
+    pvSeverity->put(alarm.getSeverity());
+    pvStatus->put(alarm.getStatus());
+    pvMessage->put(alarm.getMessage());
+    return true;
 }
 
 }}

src/property/pvControl.cpp

@@ -70,25 +70,10 @@ bool PVControl::set(Control const & control)
         throw std::logic_error(notAttached);
     }
     if(pvLow->isImmutable() || pvHigh->isImmutable() || pvMinStep->isImmutable()) return false;
-    Control current;
-    get(current);
-    bool returnValue = false;
-    if(current.getLow()!=control.getLow())
-    {
-         pvLow->put(control.getLow());
-         returnValue = true;
-    }
-    if(current.getHigh()!=control.getHigh())
-    {
-         pvHigh->put(control.getHigh());
-         returnValue = true;
-    }
-    if(current.getMinStep()!=control.getMinStep())
-    {
-         pvMinStep->put(control.getMinStep());
-         returnValue = true;
-    }
-    return returnValue;
+    pvLow->put(control.getLow());
+    pvHigh->put(control.getHigh());
+    pvMinStep->put(control.getMinStep());
+    return true;
 }
 
 }}

src/property/pvDisplay.cpp

@@ -85,38 +85,13 @@ bool PVDisplay::set(Display const & display)
     }
     if(pvDescription->isImmutable() || pvFormat->isImmutable()) return false;
     if(pvUnits->isImmutable() || pvLow->isImmutable() || pvHigh->isImmutable())
-    {
          return false;
-    }
-    Display current;
-    get(current);
-    bool returnValue = false;
-    if(current.getDescription()!=display.getDescription())
-    {
-        pvDescription->put(display.getDescription());
-        returnValue = true;
-    }
-    if(current.getFormat()!=display.getFormat())
-    {
-        pvFormat->put(display.getFormat());
-        returnValue = true;
-    }
-    if(current.getUnits()!=display.getUnits())
-    {
-        pvUnits->put(display.getUnits());
-        returnValue = true;
-    }
-    if(current.getLow()!=display.getLow())
-    {
-        pvLow->put(display.getLow());
-        returnValue = true;
-    }
-    if(current.getHigh()!=display.getHigh())
-    {
-        pvHigh->put(display.getHigh());
-        returnValue = true;
-    }
-    return returnValue;
+    pvDescription->put(display.getDescription());
+    pvFormat->put(display.getFormat());
+    pvUnits->put(display.getUnits());
+    pvLow->put(display.getLow());
+    pvHigh->put(display.getHigh());
+    return true;
 }
 
 }}

src/property/pvTimeStamp.cpp

@@ -30,14 +30,14 @@ bool PVTimeStamp::attach(PVFieldPtr const & pvField)
     PVStructure* pvStructure = xxx.get();
     while(true) {
         PVLongPtr pvLong = pvStructure->getSubField<PVLong>("secondsPastEpoch");
-        if(pvLong) {
+        if(pvLong.get()!=NULL) {
             pvSecs = pvLong;
             pvNano = pvStructure->getSubField<PVInt>("nanoseconds");
             pvUserTag = pvStructure->getSubField<PVInt>("userTag");
         }
-        if(pvSecs
-        && pvNano
-        && pvUserTag) return true;
+        if(pvSecs.get()!=NULL
+        && pvNano.get()!=NULL
+        && pvUserTag.get()!=NULL) return true;
         detach();
         // look up the tree for a timeSyamp
         pvStructure = pvStructure->getParent();
@@ -73,25 +73,10 @@ bool PVTimeStamp::set(TimeStamp const & timeStamp)
         throw std::logic_error(notAttached);
     }
     if(pvSecs->isImmutable() || pvNano->isImmutable()) return false;
-    TimeStamp current;
-    get(current);
-    bool returnValue = false;
-    if(current.getSecondsPastEpoch()!=timeStamp.getSecondsPastEpoch())
-    {
-        pvSecs->put(timeStamp.getSecondsPastEpoch());
-        returnValue = true;
-    }
-    if(current.getNanoseconds()!=timeStamp.getNanoseconds())
-    {
-        pvNano->put(timeStamp.getNanoseconds());
-        returnValue = true;
-    }
-    if(current.getUserTag()!=timeStamp.getUserTag())
-    {
-        pvUserTag->put(timeStamp.getUserTag());
-        returnValue = true;
-    }
-    return returnValue;
+    pvSecs->put(timeStamp.getSecondsPastEpoch());
+    pvUserTag->put(timeStamp.getUserTag());
+    pvNano->put(timeStamp.getNanoseconds());
+    return true;
 }
     
 }}

src/property/timeStamp.cpp

@@ -21,10 +21,10 @@
 
 namespace epics { namespace pvData { 
 
-const int32 milliSecPerSec = 1000;
-const int32 microSecPerSec = 1000000;
-const int32 nanoSecPerSec = 1000000000;
-const int64 posixEpochAtEpicsEpoch = POSIX_TIME_AT_EPICS_EPOCH;
+int32 milliSecPerSec = 1000;
+int32 microSecPerSec = milliSecPerSec*milliSecPerSec;
+int32 nanoSecPerSec = milliSecPerSec*microSecPerSec;
+int64 posixEpochAtEpicsEpoch = POSIX_TIME_AT_EPICS_EPOCH;
 
 TimeStamp::TimeStamp(int64 secondsPastEpoch,int32 nanoseconds,int32 userTag)
 : secondsPastEpoch(secondsPastEpoch),nanoseconds(nanoseconds),userTag(userTag)