Set dependency branches for cloudbees builds

.ci/travis-build.sh

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

.ci/travis-prepare.sh

@@ -1,111 +0,0 @@
-#!/bin/sh
-set -e -x
-
-CURDIR="$PWD"
-
-cat << EOF > $CURDIR/configure/RELEASE.local
-EPICS_BASE=$HOME/.source/epics-base
-EOF
-
-install -d "$HOME/.source"
-cd "$HOME/.source"
-
-add_gh_flat() {
-  MODULE=$1
-  REPOOWNER=$2
-  REPONAME=$3
-  BRANCH=$4
-  MODULE_UC=$(echo $MODULE | tr 'a-z' 'A-Z')
-  ( git clone --quiet --depth 5 --branch $BRANCH https://github.com/$REPOOWNER/$REPONAME.git $MODULE && \
-  cd $MODULE && git log -n1 )
-  cat < $CURDIR/configure/RELEASE.local > $MODULE/configure/RELEASE.local
-  cat << EOF >> $CURDIR/configure/RELEASE.local
-${MODULE_UC}=$HOME/.source/$MODULE
-EOF
-}
-
-# not recursive
-git clone --quiet --depth 5 --branch "$BRBASE" https://github.com/${REPOBASE:-epics-base}/epics-base.git epics-base
-(cd epics-base && git log -n1 )
-add_gh_flat pvData ${REPOPVD:-epics-base} pvDataCPP ${BRPVD:-master}
-add_gh_flat pvAccess ${REPOPVA:-epics-base} pvAccessCPP ${BRPVA:-master}
-add_gh_flat normativeTypes ${REPONT:-epics-base} normativeTypesCPP ${BRNT:-master}
-
-if [ -e $CURDIR/configure/RELEASE.local ]
-then
-  cat $CURDIR/configure/RELEASE.local
-fi
-
-EPICS_HOST_ARCH=`sh epics-base/startup/EpicsHostArch`
-
-# requires wine and g++-mingw-w64-i686
-if [ "$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
-make -j2 -C pvData $EXTRA
-make -j2 -C normativeTypes $EXTRA
-make -j2 -C pvAccess $EXTRA

.gitignore

@@ -1,17 +1,13 @@
-/cfg/
+bin/
-/bin/
+lib/
-/lib/
+doc/
-/db/
+include/
-/dbd/
+db/
-/html/
+dbd/
-/include/
+documentation/html
-/templates/
+documentation/*.tag
-/configure/*.local
-/documentation/html
-/documentation/*.tag
-O.*/
-/QtC-*
 envPaths
-*.orig
+configure/*.local
-*.log
+!configure/ExampleRELEASE.local
-.*.swp
+**/O.*
+QtC-*

.readthedocs.yml

@@ -1,17 +0,0 @@
-# .readthedocs.yml
-# Read the Docs configuration file
-# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
-
-# Required
-version: 2
-
-# Build documentation in the documentation/ directory with Sphinx
-sphinx:
-  configuration: documentation/conf.py
-
-# Build documentation with MkDocs
-#mkdocs:
-#  configuration: mkdocs.yml
-
-# Optionally build your docs in additional formats such as PDF and ePub
-formats: all

.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
- - BRBASE=7.0 CMPLR=clang
- - BRBASE=7.0 EXTRA="CMD_CXXFLAGS=-std=c++98"
- - BRBASE=7.0 EXTRA="CMD_CXXFLAGS=-std=c++11"
- - BRBASE=7.0 CMPLR=clang EXTRA="CMD_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

Doxyfile

@@ -38,7 +38,7 @@ PROJECT_NAME           = pvaClientCPP
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 4.7.1
+PROJECT_NUMBER         =
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -152,7 +152,7 @@ FULL_PATH_NAMES        = YES
 # will be relative from the directory where doxygen is started.
 # This tag requires that the tag FULL_PATH_NAMES is set to YES.
 
-STRIP_FROM_PATH        = src
+STRIP_FROM_PATH        =
 
 # The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of the
 # path mentioned in the documentation of a class, which tells the reader which
@@ -161,7 +161,7 @@ STRIP_FROM_PATH        = src
 # specify the list of include paths that are normally passed to the compiler
 # using the -I flag.
 
-STRIP_FROM_INC_PATH    = src
+STRIP_FROM_INC_PATH    =
 
 # If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter (but
 # less readable) file names. This can be useful is your file systems doesn't
@@ -765,8 +765,7 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = src \
+INPUT                  = include
-                         src/pv
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
@@ -797,7 +796,7 @@ FILE_PATTERNS          =
 # be searched for input files as well.
 # The default value is: NO.
 
-RECURSIVE              = NO
+RECURSIVE              = YES
 
 # The EXCLUDE tag can be used to specify files and/or directories that should be
 # excluded from the INPUT source files. This way you can easily exclude a
@@ -1036,7 +1035,7 @@ GENERATE_HTML          = YES
 # The default directory is: html.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_OUTPUT            = html/doxygen
+HTML_OUTPUT            = documentation/html
 
 # The HTML_FILE_EXTENSION tag can be used to specify the file extension for each
 # generated HTML page (for example: .htm, .php, .asp).

README.md

@@ -1,17 +1,49 @@
-# pvaClientCPP
+pvaClientCPP
+============
 
-The **pvaClient** API provides a synchronous client interface that was designed to be easier to use than the original basic pvAccess client API.
+pvaClient is a synchronous client interface to pvAccess,
+which is callback based.
+pvaClient is thus easier to use than pvAccess itself.
 
-The pvaClientCPP module implements the pvaClient API for C++ client applications.
+See documentation/pvaClientCPP.html for details.
 
-## Links
+Building
+--------
 
-- General information about EPICS can be found at the
+If a proper RELEASE.local file exists one directory level above pvaClientCPP
-  [EPICS Controls website](https://epics-controls.org).
+then just type:
-- API documentation for this module can be found in its
-  documentation directory, in particular the file
-  pvaClientCPP.html
 
-## Building
+    make
 
-This module is included as a submodule of a full EPICS 7 release and will be compiled during builds of that software.
+It can also be built by:
+
+    cp configure/ExampleRELEASE.local configure/RELEASE.local
+    edit configure/RELEASE.local
+    make
+
+
+Examples
+------------
+
+Project exampleCPP has examples for pvaClientCPP
+
+Status
+------
+
+* The API is for EPICS Version 4 release 4.6.0
+* Everything defined in pvaClient.h is ready but see below for remaining work.
+* Everything defined in pvaClientMultiChannel.h is ready but see below for remaining work.
+
+
+pvaClientChannel
+---------------
+
+Channel::getField and channelArray are not supported for release 4.6
+
+pvaClientMultiChannel
+---------------
+
+For release 4.5 support is available for multiDouble and NTMultiChannel.
+In the future additional support should be provided that at least includes NTScalarMultiChannel.
+
+Testing with some channels not connected has not been done.

configure/CONFIG_PVACLIENT_VERSION

@@ -1,12 +0,0 @@
-# Version number for the PVA Client API and shared library
-
-EPICS_PVACLIENT_MAJOR_VERSION = 4
-EPICS_PVACLIENT_MINOR_VERSION = 7
-EPICS_PVACLIENT_MAINTENANCE_VERSION = 1
-
-# Development flag, set to zero for release versions
-
-EPICS_PVACLIENT_DEVELOPMENT_FLAG = 0
-
-# Immediately after a release the MAINTENANCE_VERSION
-# will be incremented and the DEVELOPMENT_FLAG set to 1

configure/ExampleRELEASE.local

@@ -0,0 +1,8 @@
+EPICS4_DIR=/home/epicsv4/master
+PVACCESS=${EPICS4_DIR}/pvAccessCPP
+NORMATIVETYPES=${EPICS4_DIR}/normativeTypesCPP
+PVDATA=${EPICS4_DIR}/pvDataCPP
+PVCOMMON=${EPICS4_DIR}/pvCommonCPP
+
+TEMPLATE_TOP=$(EPICS_BASE)/templates/makeBaseApp/top
+EPICS_BASE=/home/install/epics/base

configure/Makefile

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

configure/RELEASE

@@ -1,44 +1,30 @@
-# RELEASE - Location of external support modules
+# easyPVACPP RELEASE - Location of external support modules
 #
-# IF YOU CHANGE ANY PATHS in this file or make API changes to
+# IF YOU CHANGE this file or any file it includes you must
-# any modules it refers to, you should do a "make rebuild" in
+# subsequently do a "gnumake rebuild" in the application's
-# this application's top level directory.
+# top level directory.
 #
-# The EPICS build process does not check dependencies against
+# The build process does not check dependencies against files
-# any files from outside the application, so it is safest to
+# that are outside this application, thus you should also do a
-# rebuild it completely if any modules it depends on change.
+# "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,
+# A RELEASE.local must exist that has the following definitions
-# so it may ONLY contain definititions of paths to other support
+#     EPICS_BASE=/home/install/epics/base
-# modules, variable definitions that are used in module paths,
+#     EPICS4_DIR=/home/epicsv4
-# and include statements that pull in other RELEASE files.
+#     PVCOMMON=${EPICS4_DIR}/pvCommonCPP
-# Variables may be used before their values have been set.
+#     PVDATA=${EPICS4_DIR}/pvDataCPP
-# Build variables that are NOT used in paths should be set in
+#     NORMATIVETYPES=${EPICSV4}/normativeTypesCPP
-# the CONFIG_SITE file.
+#     PVACCESS=${EPICS4_DIR}/pvAccessCPP
+#Either create a RELEASE.local one level above the TOP for this module
+#OR copy ExampleRELEASE.local to RELEASE.local and edit it.
 
-# Variables and paths to dependent modules:
-#MODULES = /path/to/modules
-#MYMODULE = $(MODULES)/my-module
-
-# If building the EPICS modules individually, set these:
-#EPICS_PVACCESS = $(MODULES)/pvAccess
-#EPICS_NORMATIVETYPES = $(MODULES)/normativeTypes
-#EPICS_PVDATA = $(MODULES)/pvData
-#EPICS_DATABASE = $(MODULES)/database
-#EPICS_CA = $(MODULES)/ca
-#EPICS_LIBCOM = $(MODULES)/libcom
-#EPICS_BASE = $(MODULES)/core
-
-# 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/RELEASE_NOTES.md

@@ -1,113 +1,19 @@
-pwd# pvaClientCPP Module
+EPICS V4 release 4.6
-
+==========================
-This document summarizes the changes to the module between releases.
-
-## Release 4.7.1 (EPICS 7.0.3.2 May 2020)
-
-* support access to a union field that is a scalar or scalarArray
-* fixed issues #62 and #63
-
-## Release 4.7.0 (EPICS 7.0.3.1, Nov 2019)
-
-* added JSON support for put and putGet
-* Fix for
-  [GitHub issue #62](https://github.com/epics-base/pvaClientCPP/issues/62)
-* Doxygen updates and read-the-docs integration.
-
-
-## Release 4.6.0 (EPICS 7.0.3, Jul 2019)
-
-* pvaClient now handles exceptions from the server properly (issue #54).
-* MultiChannel classes now properly handle PV structures that don't have a top-level `value` field (issue #56), and are more tolerant of other missing fields (issue #57).
-
-
-## Release 4.5.0 (EPICS 7.0.2.2, Apr 2019)
-
-Changes have been made for getDouble, putDouble, getDoubleArray, putDoubleArray, getString, putString, getStringArray, and putStringArray.
-
-1) Previously each only had support for a top level field named value.
-Each now allows access to a single sub field that has the correct type.
-Thus pvRequest must select a single field. For example
-
-    pva->channel("PVRdumbPowerSupply")->putDouble(1.0,"power.value" );
-
-2) PvaChannel now has a method for each of the above.
-For example instead of
-
-    PvaClientChannelPtr channel = pva->channel("PVRdouble");
-    PvaClientPutPtr clientPut = channel->put();
-    PvaClientPutDataPtr putData = clientPut->getData();
-    putData->putDouble(1.0); clientPut->put();
-
-now it can be
-
-    pva->channel("PVRdouble")->putDouble(1.0 );
-
-3) getDoubleArray and putDoubleArray work with any numeric scalar array
-
-4) getStringArray and putStringArray work with any scalar array.
-
-## Release 4.4 (EPICS 7.0.2, Dec 2018)
-
-### API changes to PvaClientMonitor
-
-The create method that had arguments for stateChangeRequester and monitorRequester no longer exists.
-
-### API changes to PvaClientGet, ..., PvaClientMonitor
-
-Previously the pvaClientGet, ..., pvaClientMonitor classes all implemented PvaClientChannelStateChangeRequester(). This method was never called and has been removed.
-
-
-## Release 4.3 (EPICS 7.0.1, Dec 2017)
-
-### Requires pvDataCPP-7.0 and pvAccessCPP-6.0 versions
-
-This release will not work with older versions of these modules.
-
-### Destroy methods removed
-
-All the destroy() methods have been removed, implementation is RAII compliant.
-
-### API changes to PvaClientMonitor
-
-The second argument of method
-
-    static PvaClientMonitorPtr create(
-        PvaClientPtr const &pvaClient,
-        epics::pvAccess::Channel::shared_pointer const & channel,
-        epics::pvData::PVStructurePtr const &pvRequest
-    );
-
-is now changed to
-
-    static PvaClientMonitorPtr create(
-        PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
-        epics::pvData::PVStructurePtr const &pvRequest
-    );
-
-A new method is also implemented
-
-    static PvaClientMonitorPtr create(
-        PvaClientPtr const &pvaClient,
-        std::string const & channelName,
-        std::string const & providerName,
-        std::string const & request,
-        PvaClientChannelStateChangeRequesterPtr const & stateChangeRequester,
-        PvaClientMonitorRequesterPtr const & monitorRequester
-    );
-
-
-## Release 4.2 (EPICS V4.6, Aug 2016)
 
 * The examples are moved to exampleCPP.
 * Support for channelRPC is now available.
 * In PvaClientMultiChannel checkConnected() now throws an exception if connect fails.
 
 
-## Release 4.1 (EPICS V4.5, Oct 2015)
+
+EPICS V4 release 4.5
+==========================
+
 
 pvaClient is a synchronous API for pvAccess.
 
+
 This is the first release of pvaClientCPP.
 It provides an API that is similar to pvaClientJava.
+

documentation/_static/css/custom.css

@@ -1,7 +0,0 @@
-.wy-side-nav-search {
-    background-color: #18334B;
-}
-
-.wy-side-nav-search input[type="text"] {
-    border-color: #18334b;
-}

documentation/conf.py

@@ -1,80 +0,0 @@
-# Configuration file for the Sphinx documentation builder.
-#
-# This file only contains a selection of the most common options. For a full
-# list see the documentation:
-# http://www.sphinx-doc.org/en/master/config
-
-# -- Path setup --------------------------------------------------------------
-
-# If extensions (or modules to document with autodoc) are in another directory,
-# add these directories to sys.path here. If the directory is relative to the
-# documentation root, use os.path.abspath to make it absolute, like shown here.
-#
-# import os
-# import sys
-# sys.path.insert(0, os.path.abspath('.'))
-
-
-# -- Project information -----------------------------------------------------
-
-project = 'normativeTypes (C++)'
-copyright = '2019, EPICS Controls.'
-author = 'EPICS'
-
-
-# -- General configuration ---------------------------------------------------
-
-# Add any Sphinx extension module names here, as strings. They can be
-# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
-# ones.
-extensions = [
-    'sphinx.ext.intersphinx',
-]
-
-# Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
-
-# List of patterns, relative to source directory, that match files and
-# directories to ignore when looking for source files.
-# This pattern also affects html_static_path and html_extra_path.
-exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
-
-# Intersphinx links to subprojects
-intersphinx_mapping = {
-}
-
-
-# -- Options for HTML output -------------------------------------------------
-
-# The theme to use for HTML and HTML Help pages.  See the documentation for
-# a list of builtin themes.
-#
-html_theme = 'sphinx_rtd_theme'
-
-
-# Add any paths that contain custom static files (such as style sheets) here,
-# relative to this directory. They are copied after the builtin static files,
-# so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
-
-html_css_files = [
-    'css/custom.css',
-]
-
-master_doc = 'index'
-
-html_theme_options = {
-    'logo_only': True,
-}
-html_logo = "images/EPICS_white_logo_v02.png"
-
-html_extra_path = [
-    '../html',
-    'pvaClientCPP.html',
-]
-
-
-# -- Run Doxygen ------------------------------------------------------------
-
-import subprocess
-subprocess.call('cd ..; mkdir -p html/doxygen; doxygen', shell=True)

documentation/htmldoxygen/README.md

@@ -1,5 +0,0 @@
-NOT FOR DIRECT USE
-==================
-
-This directory holds files that are used by doxygen.
-The files are not meant to be read except via the doxygen documention.

documentation/htmldoxygen/pvaClient.html

@@ -1,146 +0,0 @@
-<?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>PvaClient</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>
-
-<h1>PvaClient</h1>
-
-
-<h2>Overview</h2>
-<p>
-pvaClient is a synchronous wrapper for the pvAccess API, which is a callback based API.
-Thus it is easier to use than pvAccess itself.
-In addition pvaClient provides many convenience methods.
-</p>
-<p>
-Class <b>PvaClient</b> is a class that is used by all the other pvaClient classes.
-An application that uses pvaClient must call:</p>
-<pre>
-PvaClientPtr pvaClient = PvaClient::get(providers);
-</pre>
-<p>
-before it uses any other pvaClient classes.
-</p>
-<p>
-This is a singleton method, i. e. only one instance of PvaClient is created.
-</p>
-<p>
-<b>pvaClient</b> must not be deleted until the client no longer wants to use any part
-of pvaClient.
-</p>
-<p>
-<b>providers</b> is a blank separated set of provider names.
-For example:</p>
-<pre>
-PvaClientPtr pvaClient = PvaClient::get("ca pva");
-</pre>
-<p>
-The providers <b>ca</b> and <b>pva</b> are special.
-For each of these a client context is created when the <b>PvaClient</b>
-is constructed and the context destroyed when <b>PvaClient</b> is deleted.
-</p>
-<h2>Channel Caching</h2>
-<p>
-<b>PvaClient</b> has a method:
-</p>
-<pre>
-PvaClientChannelPtr channel(
-    string const &amp; channelName,
-    string const &amp;providerName = "pva",
-    double timeOut = 5.0);
-</pre>
-<p>
-This method creates a
-<b>PvaClientChannel</b> and then connects to the channel.
-</p>
-<p>
-If a call is successful then multiple calls to the same channelName and providerName
-share the same PvaClientChannel, i. e. the PvaClientChannel is cached.
-</p>
-<p>
-<b>pvaClientChannelGet</b> and <b>pvaClientChannelPut</b> also implement caching.
-</p>
-<p>
-For example consider a client that makes multiple calls like:
-</p>
-<pre>
-double value;
-value =  pva->channel(channelName)->get()->getData()->getDouble();
-...
-value =  pva->channel(channelName)->get()->getData()->getDouble();
-</pre>
-<p>
-Only the first call creates a new PvaClientChannel and a new PvaClientGet.
-The second call reuses the cached PvaClientChannel and PvaClientGet.
-</p>
-<h2>Non Cached Channels</h2>
-<p>
-<b>PvaClient</b> has a method:
-</p>
-<pre>
-PvaClientChannelPtr createChannel(
-    string const &amp; channelName,
-    string const &amp;providerName = "pva");
-</pre>
-<p>
-This method is just creates a new PvaClientChannel and returns it to the caller.
-The caller must call the PvaClientChannel connect methods.
-</p>
-
-<h2>Blocking vs Non-Blocking Methods</h2>
-<p>Each component of pvaClient provides a set of blocking and non-blocking calls.
-For example several components (examples are <b>PvaClientChannel</b> and <b>PvaChannelGet</b>)
-have methods:</p>
-<dl>
-    <dt>connect</dt>
-       <dd>
-        This calls issueConnect and then waitConnect.
-        If waitConnect fails an exception is thrown.
-        Since waitConnect is a blocking method so is this.
-       </dd>
-    <dt>issueConnect</dt>
-       <dd>
-         This is a request to connect, i. e. issue a request to the server to create something
-         on the server. This is a non blocking call.
-       </dd>
-    <dt>waitConnect</dt>
-       <dd>
-         This waits for the server to respond to issueConnect.
-         It blocks until the server responds or a timeout occurs.
-       </dd>
-</dl>
-
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientChannel.html

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-<head>
-  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>PvaClientChannel</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">
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-  <!-- Script that generates the Table of Contents -->
-  <script type="text/javascript"
-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientChannel</h1>
-
-<h2>Overview</h2>
-<p>
-pvaClientChannel is a synchronous wrapper for the pvAccess::Channel API, which is a callback based API.
-Thus it is easier to use than pvAccess::Channel itself.
-</p>
-<p>An instance of <b>PvaClientChannel</b> connects to a single channel.
-An instance can only be created via class <b>PvaClient</b> which has both synchronous methods, which block, and non blocking methods.
-The synchrouous methods block until a connection is made to the channel and throw an exception if a 
-timeout occurs while trying to make a connection.
-The non blocking methods leave connection to the caller.
-</p>
-<p><b>PvaClientChannel</b> has methods:</p>
-<dl>
-   <dt>Connect to channel</dt>
-     <dd>These can be called indirectly by a blocking request to <b>PvaClient</b>
-       or by the client if a non blocking request is made to <b>PvaClient</b>.
-     </dd>
-   <dt>Channel state change requester</dt>
-     <dd>The client can provide a callback that is called each time the connection state
-       of the channel changes.
-     </dd>
-   <dt>Creating all of the following</dt>
-   <dd>
-<pre>
-PvaClientField      NOT IMPLEMENTED
-PvaClientProcess
-PvaClientGet
-PvaClientPut
-PvaClientPutGet
-PvaClientMonitor
-PvaClientArray      NOT IMPLEMENTED
-PvaClientRPC
-</pre>
-   </dd>
-</dl>
-<h2>Connect: Blocking vs Non-Blocking </h2>
-<p><b>PvaClientChannel</b> has methods:</p>
-<dl>
-    <dt>connect</dt>
-       <dd>
-        This calls issueConnect and then waitConnect.
-        If waitConnect fails an exception is thrown.
-        Since waitConnect is a blocking method so is this.
-       </dd>
-    <dt>issueConnect</dt>
-       <dd>
-         This is a request to connect to the channel. This is a non blocking call.
-       </dd>
-    <dt>waitConnect</dt>
-       <dd>
-         This waits for the server to respond to issueConnect.
-         It blocks until the server responds or a timeout occurs.
-       </dd>
-</dl>
-
-<h2>Get and Put Caching</h2>
-<p>
-<b>PvaClientChannel</b> has methods:
-</p>
-<pre>
-PvaClientGetPtr get(std::string const &amp; request);
-PvaClientPutPtr put(std::string const &amp; request);
-</pre>
-<p>
-Each of these caches.
-For example all calls to <b>get</b> with the same <b>request</b> will share the same
-<b>PvaChannelGet</b>
-</p>
-<p>
-For example consider a client that makes multiple calls like:
-</p>
-<pre>
-double value;
-value =  pva->channel(channelName)->get()->getData()->getDouble();
-...
-value =  pva->channel(channelName)->get()->getData()->getDouble();
-</pre>
-<p>
-Only the first call creates a new PvaClientChannel and a new PvaClientGet.
-The second call reuses the cached PvaClientChannel and PvaClientGet.
-</p>
-
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientChannelStateChangeRequester.html

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-<html xmlns="http://www.w3.org/1999/xhtml">
-<head>
-  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>PvaClientChannelStateChangeRequester</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" />
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-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientChannelStateChangeRequester</h1>
-
-<p>This class has the single method <b>channelStateChange</b>.
-It is called each time the channel connection status changes.
-</p>
-<p>
-<b>NOTE:</b>
-The implementation must not call a method that blocks waiting for a response from the server.
-It it does the client may be blocked forever.
-</p>
-<p>
-An example of illegal code is:
-</p>
-<pre>
-virtual void channelStateChange(PvaClientChannelPtr const & channel, bool isConnected)
-{
-    if(isConnected&&!pvaClientPut)
-    {
-       pvaClientPut  = pvaClientChannel->createPut(request);
-       pvaClientPut->connect();
-    }
-}
-</pre>
-<p>
-This is illegal because the call to <b>connect</b> blocks.
-</p>
-<p>The following is an example of legal code:
-</p>
-<pre>
-virtual void channelStateChange(PvaClientChannelPtr const & channel, bool isConnected)
-{
-    if(isConnected&&!pvaClientPut)
-    {
-       pvaClientPut  = pvaClientChannel->createPut(request);
-       pvaClientPut->issueConnect();
-    }
-}
-</pre>
-<p>This is legal code because neither <b>createPut</b> or <b>issueConnect</b>
-blocks.
-</p>
-
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientGet.html

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-  <title>PvaClientGet</title>
-  <link rel="stylesheet" type="text/css"
-  href="http://epics-pvdata.sourceforge.net/base.css" />
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-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientGet</h1>
-
-
-<p>
-pvaClientGet is a synchronous wrapper for the pvAccess::ChannelGet API, which is a callback based API.
-Thus it is easier to use than pvAccess::ChannelGet itself.
-</p>
-<p>An instance of PvaClientGet is created via a call to one of the following:</p>
-<pre>
-class PvaClientChannel
-...
-{
-...
-    PvaClientGetPtr get(std::string const &amp; request = "field(value,alarm,timeStamp)");
-    PvaClientGetPtr createGet(std::string const &amp; request = "");
-    PvaClientGetPtr createGet(epics::pvData::PVStructurePtr const &amp;  pvRequest);
-...
-};
-<p>An instance of <b>PvaClientGet</b> connects to a single channel.
-<b>PvaClientGet</b> has both synchronous methods, which block, and non blocking methods.
-</p>
-<p><b>PvaClientChannel</b> has methods:</p>
-<pre>
-connect             Calls issueConnect and then waitConnect.
-issueConnect        issues a request to the server to create the server side of ChannelPut.
-waitConnect         blocks until server responds that it has created the ChannelPut.
-get                 Calls issueGet and then waitGet.
-issueGet            issues a get request to the server.
-waitGet             waits until the server send a message that the get is complete.
-getData             get the data.
-</pre>
-<p>
-<b>issueConnect</b> and <b>issueGet</b> do not block.
-All other methods can block.
-</p>
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientGetData.html

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-<head>
-  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>PvaClientGetData</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" />
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-  <script type="text/javascript"
-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientGetData</h1>
-
-<p>This class provides access to the data returned by calls to get data via <b>PvaChannelGet</b>
-It provides methods:</p>
-<pre>
-getStructure          Get the introspection interface for data returned from server
-getPVStructure        Get the complete set of data returned from the server.
-getChangedBitSet      Get the bitSet that shows which fields have a new value since last get.
-showChanged           Show all the fields that have changed value since the last get,
-getAlarm              If a alarm field is available get it.
-getTimeStamp          If a timeStamp field is available get it.
-hasValue              Does the PVStructure have a top level field named value
-NOTE: The following only apply if hasValue is true.
-isValueScalar         Is the value field a scalar?
-isValueScalarArray    Is the value field a scalar array?
-getValue              Get the value field.
-getScalarValue        Get a scalar value field.
-getArrayValue         Get an array value field.
-getScalarArrayValue   Get a scalar array value field.
-getDouble             Get scalar value field as a double.
-getString             Get value field as a string.
-getDoubleArray        Get value field as a double array.
-getStringArray        Get value field as a string array.
-</pre>
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientGetRequester.html

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-<head>
-  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>PvaClientGetRequester</title>
-  <link rel="stylesheet" type="text/css"
-  href="http://epics-pvdata.sourceforge.net/base.css" />
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-  <!-- Script that generates the Table of Contents -->
-  <script type="text/javascript"
-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientGetRequester</h1>
-
-<p>This is a virtual class that can be implemented by a client that uses <b>PvaClientGet</b>.
-It has the methods:</p>
-<pre>
-virtual void channelGetConnect(
-    const Status&amp; status,
-    PvaClientGetPtr const &amp; clientGet) {}
-virtual void getDone(
-    const Status&amp; status,
-    PvaClientGetPtr const &amp; clientGet) = 0;
-</pre>
-
-<p>The client must call</p>
-<pre>
-pvaClientGet->setRequester(shared_from_this());
-</pre>
-<p>
-after creating an instance of PvaClientGet.
-</p>
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientMonitor.html

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-<html xmlns="http://www.w3.org/1999/xhtml">
-<head>
-  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>PvaClientMonitor</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">
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-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientMonitor</h1>
-<p>
-<b>NOTE:</b> This is a work in progress.
-</p>
-<h2>Overview</h2>
-<p>
-This provides an easier way to create a monitor on a channel than to use pvAccessCPP itself.
-It provides two main ways to create a monitor:
-</p>
-<h3>The client first creates a PvaClientMonitorChannel and then creates a monitor</h3>
-The client calls:
-<pre>
-static PvaClientMonitorPtr create(
-    PvaClientMonitorPtr const &amp;PvaClientMonitor,
-    PvaClientMonitorChannelPtr const &amp; PvaClientMonitorChannel,
-    epics::pvData::PVStructurePtr const &amp;pvRequest
-);
-
-where
-
-PvaClientMonitor
-    The PvaClientMonitor.
-
-PvaClientMonitorChannel
-    The PvaClientMonitorChannel that has already been created by the client.
-
-pvRequest
-    The pvRequest for creating the monitor.
-</pre>
-With this method the monitor is created and started.
-This method blocks while the monitor is created.
-<h3>The client provides names for a channel and a provider</h3>
-The client calls:
-<pre>
-static PvaClientMonitorPtr create(
-    PvaClientMonitorPtr const &amp;PvaClientMonitor,
-    std::string const &amp; channelName,
-    std::string const &amp; providerName,
-    std::string const &amp; request,
-    PvaClientMonitorChannelStateChangeRequesterPtr const &amp; stateChangeRequester,
-    PvaClientMonitorRequesterPtr const &amp; monitorRequester
-);
-
-where
-
-PvaClientMonitor
-    The PvaClientMonitor.
-
-channelName
-    The name of the channel.
-
-providerName
-    The name of the provider
-
-request
-    The request for creating the monitor
-
-stateChangeRequester
-    The client supplied state change requester.
-    This will be called each time a state change for the channel occurs.
-
-monitorRequester
-    The client supplied monitor requester.
-    This is called each time a new monitor event is available.
-</pre>
-With this method a pvaChannel is created and after it connects a pvaMonitor is created and started.
-This method never blocks.
-
-</body>
-</html>
-

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-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientMonitorData</h1>
-
-
-<p>This class provides access to the data returned by calls to get data via <b>PvaChannelGet</b>
-It provides methods:</p>
-<pre>
-getStructure          Get the introspection interface for data returned from server
-getPVStructure        Get the complete set of data returned from the server.
-getChangedBitSet      Get the bitSet that shows which fields have a new value since last monitor event.
-getOverrunBitSet      Get the bitSet that shows which fields have changed more than once since last monitor event.
-showChanged           Show all the fields that have changed value since the last monitor event,
-showChanged           Show all the fields that have changed value more than once since last monitor event.
-getAlarm              If a alarm field is available get it.
-getTimeStamp          If a timeStamp field is available get it.
-hasValue              Does the PVStructure have a top level field named value
-NOTE: The following only apply if hasValue is true.
-isValueScalar         Is the value field a scalar?
-isValueScalarArray    Is the value field a scalar array?
-getValue              Get the value field.
-getScalarValue        Get a scalar value field.
-getArrayValue         Get an array value field.
-getScalarArrayValue   Get a scalar array value field.
-getDouble             Get scalar value field as a double.
-getString             Get value field as a string.
-getDoubleArray        Get value field as a double array.
-getStringArray        Get value field as a string array.
-</pre>
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientMonitorRequester.html

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-<html xmlns="http://www.w3.org/1999/xhtml">
-<head>
-  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>PvaClientMonitorRequester</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" />
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-  <!-- Script that generates the Table of Contents -->
-  <script type="text/javascript"
-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientMonitorRequester</h1>
-
-<p>This is a virtual class that can be implemented by a client that uses <b>PvaClientMonitor</b>.
-It has the methods:</p>
-<pre>
-virtual void monitorConnect(
-    const Status&amp; status,
-    PvaClientMonitorPtr const &amp; clientMonitor,
-    StructureConstPtr const &amp; structure) {}
-virtual void event(
-    PvaClientMonitor const &amp; clientGet) = 0;
-virtual void unlisten()
-{
-     std::cerr &lt;&lt; "PvaClientMonitorRequester::unlisten called"
-               &lt;&lt; " but no PvaClientMonitorRequester::unlisten\n";
-}
-</pre>
-
-<p>The client must call</p>
-<pre>
-pvaClientMonitor->setRequester(shared_from_this());
-</pre>
-<p>
-after creating an instance of PvaClientMonitor.
-</p>
-
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientProcess.html

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-<?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>PvaClientProcess</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[*/
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-  <!-- Script that generates the Table of Contents -->
-  <script type="text/javascript"
-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientProcess</h1>
-
-<p>
-pvaClientProcess is a synchronous wrapper for the pvAccess::ChannelProcess API, which is a callback based API.
-Thus it is easier to use than pvAccess::ChannelProcess itself.
-</p>
-<p>An instance of PvaClientProcess is created via a call to one of the followimg:</p>
-<pre>
-class PvaClientChannel
-...
-{
-...
-    PvaClientProcessPtr createProcess(std::string const &amp; request = "");
-    PvaClientProcessPtr createProcess(epics::pvData::PVStructurePtr const &amp;  pvRequest);
-...
-};
-<p>An instance of <b>PvaClientProcess</b> connects to a single channel.
-<b>PvaClientProcess</b> has both synchronous methods, which block, and non blocking methods.
-</p>
-<p><b>PvaClientChannel</b> has methods:</p>
-<pre>
-connect             Calls issueConnect and then waitConnect.
-issueConnect        issues a request to the server to create the server side of ChannelPut.
-waitConnect         blocks until server responds that it has created the ChannelPut.
-process             Calls issueProcess and then waitProcess.
-issueProcess        issues a process request to the server.
-waitProcess         waits until the server send a message that the process is complete.
-</pre>
-<p>
-<b>issueConnect</b> and <b>issueProcess</b> do not block.
-All other methods can block.
-</p>
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientPut.html

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-<?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>PvaClientChannelPut</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[*/
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-  /*]]>*/</style>
-  <!-- Script that generates the Table of Contents -->
-  <script type="text/javascript"
-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientChannelPut</h1>s
-
-<p>
-pvaClientPut is a synchronous wrapper for the pvAccess::ChannelPut API, which is a callback based API.
-Thus it is easier to use than pvAccess::ChannelPut itself.
-</p>
-<p>
-<b>NOTE:</b>
-Except for union fields pvaClientPut takes care of modifying the bitSet associated with
-the data sent to the server.
-</p>
-<p>An instance of PvaClientPut is created via a call to one of the followimg:</p>
-<pre>
-class PvaClientChannel
-...
-{
-...
-    PvaClientPutPtr put(std::string const & request = "field(value,alarm,timeStamp)");
-    PvaClientPutPtr createPut(std::string const & request = "");
-    PvaClientPutPtr createPut(epics::pvData::PVStructurePtr const &  pvRequest);
-...
-};
-<p>An instance of <b>PvaClientPut/b> connects to a single channel.
-<b>PvaClientPut</b> has both synchronous methods, which block, and non blocking methods.
-</p>
-<p><b>PvaClientPut</b> has methods:</p>
-<pre>
-connect             Calls issueConnect and then waitConnect.
-issueConnect        issues a request to the server to create the server side of ChannelPut.
-waitConnect         blocks until server responds that it has created the ChannelPut.
-get                 Calls issueGet and then waitGet.
-issueGet            issues a request to the server to get the latest data.
-waitGet             waits until the server send a message that the get is complete.
-put                 Calls issuePut and then waitPut.
-issuePut            issues a put request to the server.
-waitPut             waits until the server send a message that the put is complete.
-getData             get the data.
-</pre>
-<p>
-Note that <b>issueConnect</b>, <b>issueGet</b>  and <b>issuePut</b> do not block but all other methods
-do block.
-</p>
-
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientPutData.html

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-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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-<html xmlns="http://www.w3.org/1999/xhtml">
-<head>
-  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>PvaClientPutData</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[*/
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-  <!-- Script that generates the Table of Contents -->
-  <script type="text/javascript"
-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientPutData</h1>
-
-<p>This class provides access to data to send to the server via a <b>PvaChannelPut</b>
-It is created by <b>PvaChannelPut</b> or <b>PvaChannelPutGet</b>.
-This the client only gets access to an instance by getting it from <b>PvaChannelPut</b> or <b>PvaChannelPutGet</b>.
-<p>
-<p>Note also that for all field types except <b>union</b> the <b>BitSet</b> for the data is updated
-by <b>PvaChannelPut</b> or <b>PvaChannelPutGet</b> whenever the client changes a field.
-For a <b>union</b> or <b>unionArray</b> field the client must update the <b>BitSet</b>.
-</p>
-
-<p>
-PvaClientPutData provides methods:</p>
-<pre>
-getStructure          Get the introspection interface for data sent to server
-getPVStructure        Get the complete set of data sent to the server.
-getChangedBitSet      Get the bitSet that shows which fields have a new value since last get.
-showChanged           Show all the fields that have changed value since the last get,
-getAlarm              If a alarm field is available get it.
-getTimeStamp          If a timeStamp field is available get it.
-hasValue              Does the PVStructure have a top level field named value
-NOTE: The following only apply if hasValue is true.
-isValueScalar         Is the value field a scalar?
-isValueScalarArray    Is the value field a scalar array?
-getValue              Get the value field.
-getScalarValue        Get a scalar value field.
-getArrayValue         Get an array value field.
-getScalarArrayValue   Get a scalar array value field.
-getDouble             Get scalar value field as a double.
-getString             Get value field as a string.
-getDoubleArray        Get value field as a double array.
-getStringArray        Get value field as a string array.
-putDouble             Put scalar value field as a double.
-putString             Put value field as a string.
-putDoubleArray        Put value field as a double array.
-putStringArray        Put value field as a string array.
-</pre>
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientPutGet.html

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-<head>
-  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>PvaClientPutGetGet</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">
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-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientPutGetGet</h1>
-
-<p>
-pvaClientPutGet is a synchronous wrapper for the pvAccess::ChannelPutGet API, which is a callback based API.
-Thus it is easier to use than pvAccess::ChannelPut itself.
-</p>
-<p>
-<b>NOTE:</b>
-Except for union fields pvaClientPutGet takes care of modifying the bitSet associated with
-the data sent to the server.
-</p>
-<p>An instance of PvaClientPutGet is created via a call to one of the followimg:</p>
-<pre>
-class PvaClientChannel
-...
-{
-...
-    PvaClientPutGetPtr createPutGet(std::string const &amp; request);
-    PvaClientPutGetPtr createPutGet(epics::pvData::PVStructurePtr const &amp;  pvRequest);
-...
-};
-<p>An instance of <b>PvaClientPutGet</b> connects to a single channel.
-<b>PvaClientPutGet</b> has both synchronous methods, which block, and non blocking methods.
-</p>
-<p><b>PvaClientPutGet</b> has methods:</p>
-<pre>
-connect             calls issueConnect and then waitConnect.
-issueConnect        issues a request to the server to create the server side of ChannelPut.
-waitConnect         blocks until server responds that it has created the ChannelPut.
-putGet              call issuePutGet and then waitPutGet.
-issuePutGet         issue a putGet and return immediately.
-waitPutGet          wait until putGet completes.
-getGet              calls issueGetGet and then waitGetGet.
-issueGetGet         issues a request to the server to get the latest data for the get data.
-waitGetGet          waits until the server send a message that the getGet is complete.
-getPut              calls issueGetPut and then waitGetPut.
-issueGetPut         issues a request to the server to get the latest data for the put data.
-waitGetPut          waits until the server send a message that the getPut is complete.
-getPutData          get the put portion of the data.
-getGetData          get the get portion of the data.
-</pre>
-<p>
-<b>issueConnect</b>, <b>issuePutGet</b>,  <b>issueGetGet</b>  and <b>issueGetPut</b> do not block.
-All other methods can block.
-</p>
-
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientPutGetRequester.html

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-  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>PvaClientPutGetRequester</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" />
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-  <!-- Script that generates the Table of Contents -->
-  <script type="text/javascript"
-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientPutGetRequester</h1>
-
-<p>This is a virtual class that can be implemented by a client that uses <b>PvaClientPut</b>.
-It has the methods:</p>
-<pre>
-virtual void channelPutGetConnect(
-    const Status&amp; status,
-    PvaClientPutGetPtr const &amp; clientPutGet) {}
-virtual void putGetDone(
-    const Status&amp; status,
-    PvaClientPutGetPtr const &amp; clientPutGet) {}
-virtual void getPutDone(
-    const Status&amp; status,
-    PvaClientPutGetPtr const &amp; clientPutGet) = 0;
-virtual void getGetDone(
-    const Status&amp; status,
-    PvaClientPutGetPtr const &amp; clientPutGet) = 0;
-</pre>
-
-<p>The client must call</p>
-<pre>
-pvaClientPutGet->setRequester(shared_from_this());
-</pre>
-<p>
-after creating an instance of PvaClientPutGet.
-</p>
-
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientPutRequester.html

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-  <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>PvaClientPutRequester</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" />
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-  /*]]>*/</style>
-  <!-- Script that generates the Table of Contents -->
-  <script type="text/javascript"
-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
-  </script>
-</head>
-<body>
-
-<h1>PvaClientPutRequester</h1>
-
-<p>This is a virtual class that can be implemented by a client that uses <b>PvaClientPut</b>.
-It has the methods:</p>
-<pre>
-virtual void channelPutConnect(
-    const Status&amp; status,
-    PvaClientPutPtr const &amp; clientPut) {}
-virtual void getDone(
-    const Status&amp; status,
-    PvaClientPutPtr const &amp; clientPut) {}
-virtual void putDone(
-    const Status&amp; status,
-    PvaClientPutPtr const &amp; clientPut) = 0;
-</pre>
-
-<p>The client must call</p>
-<pre>
-pvaClientPut->setRequester(shared_from_this());
-</pre>
-<p>
-after creating an instance of PvaClientPut.
-</p>
-
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientRPC.html

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-  <link rel="stylesheet" type="text/css"
-  href="http://epics-pvdata.sourceforge.net/base.css" />
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-     .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>
-
-<h1>PvaClientRPC</h1>
-
-<p>
-<b>Not Yet Written</b>
-</p>
-
-</body>
-</html>
-

documentation/htmldoxygen/pvaClientRPCRequester.html

@@ -1,44 +0,0 @@
-<?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>PvaClientRPCRequester</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>
-
-<h1>PvaClientRPCRequester</h1>
-
-<p>
-<b>Not Yet Written</b>
-</p>
-
-</body>
-</html>
-

documentation/index.rst

@@ -1,17 +0,0 @@
-pvaClient (C++) Library
-========================
-
-.. toctree::
-   :hidden:
-
-   EPICS Website <https://epics-controls.org>
-   EPICS Documentation Home <https://docs.epics-controls.org>
-
-
-.. toctree::
-   :maxdepth: 1
-   :caption: pvaClientCPP
-
-   Reference Manual <https://docs.epics-controls.org/projects/pvaclient-cpp/en/latest/pvaClientCPP.html>
-   API Documentation <https://docs.epics-controls.org/projects/pvaclient-cpp/en/latest/doxygen>
-   Source Code Repository on GitHub <https://github.com/epics-base/pvaClientCPP>

documentation/pvaClientCPP.html

@@ -4,7 +4,7 @@
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
   <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>EPICS pvaClientCPP</title>
+  <title>EPICS pva</title>
   <link rel="stylesheet" type="text/css"
   href="http://epics-pvdata.sourceforge.net/base.css" />
   <link rel="stylesheet" type="text/css"
@@ -26,13 +26,13 @@
 
 <div class="head">
 <h1>EPICS pvaClientCPP</h1>
-<h2 class="nocount">Release 4.4 - April 2019</h2>
+<h2 class="nocount">Release 4.2.0-SNAPSHOT - 2016-07-14</h2>
 
 <h2 class="nocount">Abstract</h2>
 
-<p>pvaClient is a software library that provides, to an EPICS client programmer, a friendly
+<p>pvaClient is a software library that provides to an EPICS client programmer, a friendly
-client side programming interface to the data of an EPICS based control system. It is intended
+client side programming interface to the data of an EPICS based control system. It is intended 
-for such uses as rapid development of ad hoc programs by controls engineers, or to provide
+for such uses as rapid development of ad hoc programs by controls engineers, or to provide 
 scientists a way to directly develop analytical applications.</p>
 
 <p>Specifically, pvaClient provides a synchronous interface for pvAccess, which is the
@@ -41,7 +41,7 @@ pvAccess provides a callback based interface, which can be hard to use.
 pvaClient provides an interface that does not require callbacks even for monitors.
 </p>
 <p>
-pvaClientChannel provides many "convenience" methods to directly get and put
+pvaClientChannel provides many "convenience" methods to directly get and put 
 scalar and scalarArray data types.
 Additional methods provide access to the full features of pvAccess.
 </p>
@@ -62,32 +62,40 @@ The data for the channels is presented via normative type NTMultiChannel.
 
 </div> <!-- head -->
 
-<div id="contents" class="contents">
+<div id="toc">
+  <h2 class="nocount">Table of Contents</h2>
+</div>
+
+<!-- Place what you would like in the Table of Contents, inside the contents div -->
+<div id="contents" class="contents">	  
 <hr />
 <h2>Overview</h2>
 <p>
-pvaClientCPP is one of the components of
+pvaClientCPP is one of the components of 
 <a href="http://epics-pvdata.sourceforge.net">
 EPICS Version 4
 </a>
 </p>
-<p>This document is only a guide to help locate code and documentation related to pvaClientCPP
+<p>This document is only a guide to help locate code and documentation related to pvDatabaseCPP
 </p>
 <p>
-It is intended for developers that want to use pvaClientCPP.
+It is intended for developers that want to use pvDatabaseCPP.
 </p>
 <h2>Developer Guide</h2>
 <p>A guide for developers is available at
 <a
-href="https://mrkraimer.github.io/website/developerGuide/developerGuide.html">
+href="http://epics-pvdata.sourceforge.net/informative/developerGuide/developerGuide.html">
 developerGuide
 </a>
 </p>
-<p>This guide provides an overview of  the components that are part of an <b>EPICS V4</b> release.
+<p>This guide discusses all the components that are part of an <b>EPICS V4</b> release.
 Some understanding of the components and how they are related is necessary in order to
-develop code that uses pvaClientCPP.
+develop code that uses pvDatabaseCPP.
 In particular read everything related to pvaClient.
 </p>
+<p>The developerGuide discusses code in a way that applies to both CPP and C++.
+For the descriptions of the CPP specific code consult the next section.
+</p>
 
 <h2>doxygen</h2>
 <p>doxygen documentation is available at
@@ -96,9 +104,9 @@ href="./html/index.html">doxygen</a>
 </p>
 
 <h2>exampleCPP</h2>
-<p>Example code is available at
+<p>Example code is available as part of this release.
 <a
-href="https://github.com/epics-base/exampleCPP">
+href="http://epics-pvdata.sourceforge.net/docbuild/exampleCPP/tip/documentation/exampleCPP.html">
 exampleCPP
 </a>
 </p>

jenkins/cloudbees_build

@@ -21,22 +21,31 @@ 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"}
 
 ###########################################
 # Dependent module branches
 
-PVDATA_BRANCH="master"
+PVCOMMON_BRANCH="release-4.2"
-PVACCESS_BRANCH="master"
+PVDATA_BRANCH="release-6.0"
-NORMATIVETYPES_BRANCH="master"
+PVACCESS_BRANCH="release-5.0"
+NORMATIVETYPES_BRANCH="release-5.1"
 
 ###########################################
 # Fetch and unpack dependencies
@@ -50,6 +59,7 @@ cd ${STUFF}
 installTool Boost 1.61.0
 installTool Base ${BASE}
 
+installE4 pvCommon ${PVCOMMON_BRANCH}
 installE4 pvData ${PVDATA_BRANCH}
 installE4 pvAccess ${PVACCESS_BRANCH}
 installE4 normativeTypes ${NORMATIVETYPES_BRANCH}

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
 }
 

src/Makefile

@@ -6,13 +6,12 @@ include $(TOP)/configure/CONFIG
 LIBRARY += pvaClient
 
 # shared library ABI version.
-SHRLIB_VERSION ?= $(EPICS_PVACLIENT_MAJOR_VERSION).$(EPICS_PVACLIENT_MINOR_VERSION).$(EPICS_PVACLIENT_MAINTENANCE_VERSION)
+SHRLIB_VERSION ?= 4.2.0
 
 INC += pv/pvaClient.h
 INC += pv/pvaClientMultiChannel.h
 
 LIBSRCS += pvaClient.cpp
-LIBSRCS += pvaClientData.cpp
 LIBSRCS += pvaClientPutData.cpp
 LIBSRCS += pvaClientGetData.cpp
 LIBSRCS += pvaClientMonitorData.cpp
@@ -32,8 +31,8 @@ LIBSRCS += pvaClientNTMultiGet.cpp
 LIBSRCS += pvaClientNTMultiMonitor.cpp
 LIBSRCS += pvaClientRPC.cpp
 
-pvaClient_LIBS += nt
+pvaClient_LIBS += pvAccess nt pvData Com
-pvaClient_LIBS += $(EPICS_BASE_PVA_CORE_LIBS)
+pvaClient_LIBS +=  $(EPICS_BASE_IOC_LIBS)
-pvaClient_LIBS += $(EPICS_BASE_IOC_LIBS)
 
 include $(TOP)/configure/RULES
+

src/pv/pvaClientMultiChannel.h

@@ -21,14 +21,14 @@
 
 #ifdef pvaClientMultiChannelEpicsExportSharedSymbols
 #   define epicsExportSharedSymbols
-#   undef pvaClientMultiChannelEpicsExportSharedSymbols
+#	undef pvaClientMultiChannelEpicsExportSharedSymbols
 #endif
 
 
 #include <pv/pvaClient.h>
 
 
-namespace epics { namespace pvaClient {
+namespace epics { namespace pvaClient { 
 
 
 class PvaClientMultiChannel;
@@ -115,7 +115,7 @@ public:
      * @brief create a pvaClientMultiGetDouble
      * @return The interface.
      */
-    PvaClientMultiGetDoublePtr createGet();
+    PvaClientMultiGetDoublePtr createGet();   
     /**
      * @brief Create a pvaClientMultiPutDouble.
      * @return The interface.
@@ -145,6 +145,10 @@ public:
      */
     PvaClientNTMultiMonitorPtr createNTMonitor(
         std::string const &request= "field(value,alarm,timeStamp)");
+     /** Deprecated method
+     * \deprecated This method will go away in future versions. 
+     */
+    void destroy()  EPICS_DEPRECATED {}
 private:
     PvaClientMultiChannel(
         PvaClientPtr const &pvaClient,
@@ -152,7 +156,7 @@ private:
         std::string const & providerName,
         size_t maxNotConnected);
     void checkConnected();
-
+    
     PvaClientPtr pvaClient;
     epics::pvData::shared_vector<const std::string> channelName;
     std::string providerName;
@@ -176,7 +180,7 @@ class epicsShareClass PvaClientMultiGetDouble :
 
 public:
     POINTER_DEFINITIONS(PvaClientMultiGetDouble);
-
+    
     /**
      * @brief Create a PvaClientMultiGetDouble.
      * @param pvaClientMultiChannel The interface to PvaClientMultiChannel.
@@ -205,6 +209,10 @@ public:
     {
         return shared_from_this();
     }
+    /** Deprecated method
+     * \deprecated This method will go away in future versions. 
+     */
+    void destroy()  EPICS_DEPRECATED {}
 private:
     PvaClientMultiGetDouble(
          PvaClientMultiChannelPtr const &pvaClientMultiChannel,
@@ -214,7 +222,7 @@ private:
     PvaClientChannelArray pvaClientChannelArray;
     size_t nchannel;
     epics::pvData::Mutex mutex;
-
+    
     epics::pvData::shared_vector<double> doubleValue;
     std::vector<PvaClientGetPtr> pvaClientGet;
     bool isGetConnected;
@@ -229,7 +237,7 @@ class epicsShareClass PvaClientMultiPutDouble :
 
 public:
     POINTER_DEFINITIONS(PvaClientMultiPutDouble);
-
+   
     /** @brief Create a PvaClientMultiPutDouble.
      * @param pvaClientMultiChannel The interface to PvaClientMultiChannel.
      * @param pvaClientChannelArray The PvaClientChannel array.
@@ -254,6 +262,10 @@ public:
     {
         return shared_from_this();
     }
+    /** Deprecated method
+     * \deprecated This method will go away in future versions. 
+     */
+    void destroy()  EPICS_DEPRECATED {}
 private:
     PvaClientMultiPutDouble(
          PvaClientMultiChannelPtr const &pvaClientMultiChannel,
@@ -277,7 +289,7 @@ class epicsShareClass PvaClientMultiMonitorDouble :
 
 public:
     POINTER_DEFINITIONS(PvaClientMultiMonitorDouble);
-
+    
     /** @brief Create a PvaClientMultiMonitorDouble.
      * @param pvaClientMultiChannel The interface to PvaClientMultiChannel.
      * @param pvaClientChannelArray The PvaClientChannel array.
@@ -317,6 +329,10 @@ public:
     {
         return shared_from_this();
     }
+    /** Deprecated method
+     * \deprecated This method will go away in future versions. 
+     */
+    void destroy()  EPICS_DEPRECATED {}
 private:
     PvaClientMultiMonitorDouble(
          PvaClientMultiChannelPtr const &pvaClientMultiChannel,
@@ -360,10 +376,8 @@ public:
     void connect();
     /**
      * @brief Get each channel.
-     *
-     * @param valueOnly use only value for union.
      */
-    void get(bool valueOnly = true);
+    void get();
     /**
      * @brief Get the data from the last get.
      * @return the pvaClientNTMultiData.
@@ -376,6 +390,10 @@ public:
     {
         return shared_from_this();
     }
+    /** Deprecated method
+     * \deprecated This method will go away in future versions. 
+     */
+    void destroy()  EPICS_DEPRECATED {}
 private:
     PvaClientNTMultiGet(
          epics::pvData::UnionConstPtr const & u,
@@ -388,8 +406,8 @@ private:
     epics::pvData::PVStructurePtr pvRequest;
     size_t nchannel;
     epics::pvData::Mutex mutex;
-
+    
-
+    
     PvaClientNTMultiDataPtr pvaClientNTMultiData;
     std::vector<PvaClientGetPtr> pvaClientGet;
     bool isConnected;
@@ -413,7 +431,7 @@ public:
     static PvaClientNTMultiPutPtr create(
          PvaClientMultiChannelPtr const &pvaClientMultiChannel,
          PvaClientChannelArray const &pvaClientChannelArray);
-
+     
     ~PvaClientNTMultiPut();
      /**
      * @brief Connect a channelPut for each channel.
@@ -435,6 +453,10 @@ public:
     {
         return shared_from_this();
     }
+    /** Deprecated method
+     * \deprecated This method will go away in future versions. 
+     */
+    void destroy()  EPICS_DEPRECATED {}
 private:
     PvaClientNTMultiPut(
          PvaClientMultiChannelPtr const &pvaClientMultiChannel,
@@ -478,11 +500,10 @@ public:
      /**
      * @brief Poll each channel.
      *
-     * @param valueOnly use only value for union.
      * If any has new data it is used to update the double[].
      * @return (false,true) if (no, at least one) value was updated.
      */
-    bool poll(bool valueOnly = true);
+    bool poll();
     /**
      * @brief Wait until poll returns true.
      * @param secondsToWait The time to keep trying.
@@ -502,6 +523,10 @@ public:
     {
         return shared_from_this();
     }
+    /** Deprecated method
+     * \deprecated This method will go away in future versions. 
+     */
+    void destroy()  EPICS_DEPRECATED {}
 private:
     PvaClientNTMultiMonitor(
          epics::pvData::UnionConstPtr const & u,
@@ -543,28 +568,27 @@ public:
          PvaClientChannelArray const &pvaClientChannelArray,
          epics::pvData::PVStructurePtr const &  pvRequest);
     ~PvaClientNTMultiData();
-
+    
     /**
      * @brief Get the number of channels.
      * @return The number of channels.
      */
     size_t getNumber();
-
+   
     /**
-     * @brief Set the timeStamp base for computing deltaTimes.
+     * @brief Set the timeStamp base for computing deltaTimes. 
      */
     void startDeltaTime();
+   
     /**
      * @brief Update NTMultiChannel fields.
-     *
-     * @param valueOnly use only value for union.
      */
-    void endDeltaTime(bool valueOnly = true);
+    void endDeltaTime();
     /**
      * @brief Get the time when the last get was made.
      * @return The timeStamp.
      */
-    epics::pvData::TimeStamp getTimeStamp();
+    epics::pvData::TimeStamp getTimeStamp(); 
     /**
      * @brief Get the  NTMultiChannel.
      * @return The value.
@@ -577,12 +601,17 @@ public:
     {
         return shared_from_this();
     }
+    /** Deprecated method
+     * \deprecated This method will go away in future versions. 
+     */
+    void destroy()  EPICS_DEPRECATED {}
 private:
     PvaClientNTMultiData(
          epics::pvData::UnionConstPtr const & u,
          PvaClientMultiChannelPtr const &pvaNTMultiChannel,
          PvaClientChannelArray const &pvaClientChannelArray,
          epics::pvData::PVStructurePtr const &  pvRequest);
+    void setStructure(epics::pvData::StructureConstPtr const & structure,size_t index);
     void setPVStructure(
         epics::pvData::PVStructurePtr const &pvStructure,size_t index);
 
@@ -594,7 +623,7 @@ private:
     std::vector<epics::pvData::PVStructurePtr> topPVStructure;
     bool gotAlarm;
     bool gotTimeStamp;
-
+    
     epics::pvData::StructureConstPtr ntMultiChannelStructure;
     epics::pvData::shared_vector<epics::pvData::PVUnionPtr> unionValue;
     epics::pvData::shared_vector<epics::pvData::int32> severity;
@@ -615,3 +644,4 @@ private:
 }}
 
 #endif  /* PVACLIENTMULTICHANNEL_H */
+

src/pvaClient.cpp

@@ -18,12 +18,13 @@
 
 #include <pv/pvaClient.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::pvAccess::ca;
 using namespace std;
 
-namespace epics { namespace pvaClient {
+namespace epics { namespace pvaClient { 
 
 
 class epicsShareClass PvaClientChannelCache
@@ -42,7 +43,7 @@ public:
 private:
     map<string,PvaClientChannelPtr> pvaClientChannelMap;
 };
-
+   
 PvaClientChannelPtr PvaClientChannelCache::getChannel(
     string const & channelName,
     string const & providerName)
@@ -77,7 +78,7 @@ void PvaClientChannelCache::showCache()
          string providerName = channel->getProvider()->getProviderName();
          cout << "channel " << channelName << " provider " << providerName << endl;
          pvaChannel->showCache();
-    }
+    } 
 }
 
 size_t PvaClientChannelCache::cacheSize()
@@ -86,18 +87,7 @@ size_t PvaClientChannelCache::cacheSize()
 
 }
 
-// MSVC doesn't like making this a class static data member:
+bool PvaClient::debug = false;
-static bool debug = 0;
-
-void PvaClient::setDebug(bool value)
-{
-    debug = value;
-}
-
-bool PvaClient::getDebug()
-{
-    return debug;
-}
 
 PvaClientPtr PvaClient::get(std::string const & providerNames)
 {
@@ -110,58 +100,47 @@ PvaClientPtr PvaClient::get(std::string const & providerNames)
     return master;
 }
 
-PvaClientPtr PvaClient::create() {return get();}
 
 PvaClient::PvaClient(std::string const & providerNames)
 :  pvaClientChannelCache(new PvaClientChannelCache()),
    pvaStarted(false),
-   caStarted(false),
+   caStarted(false)
-   channelRegistry(ChannelProviderRegistry::clients())
 {
     stringstream ss(providerNames);
     string providerName;
-    if(getDebug()) {
-         cout<< "PvaClient::PvaClient()\n";
-    }
     while (getline(ss, providerName, ' '))
     {
+         ChannelProviderRegistry::shared_pointer registry(getChannelProviderRegistry());
          if(providerName=="pva") {
-             if(getDebug()) {
-                  cout<< "calling ClientFactory::start()\n";
-              }
              ClientFactory::start();
              pvaStarted = true;
          } else if(providerName=="ca") {
-             if(getDebug()) {
-                  cout<< "calling CAClientFactory::start()\n";
-              }
              CAClientFactory::start();
              caStarted = true;
          } else {
-             if(!channelRegistry->getProvider(providerName)) {
+             if(!registry->getProvider(providerName)) {
-                 cerr << "PvaClient::get provider " << providerName  << " not known" << endl;
+                  cerr << "PvaClient::get provider " << providerName  << " not known" << endl;
              }
          }
     }
 }
 
 PvaClient::~PvaClient() {
-    if(getDebug()) {
+    if(PvaClient::debug) {
         cout<< "PvaClient::~PvaClient()\n"
             << "pvaChannel cache:\n";
         showCache();
     }
     if(pvaStarted){
-        if(getDebug()) cout<< "calling ClientFactory::stop()\n";
+        if(PvaClient::debug) cout<< "calling ClientFactory::stop()\n";
         ClientFactory::stop();
-        if(getDebug()) cout<< "after calling ClientFactory::stop()\n";
+        if(PvaClient::debug) cout<< "after calling ClientFactory::stop()\n";
     }
     if(caStarted) {
-        if(getDebug()) cout<< "calling CAClientFactory::stop()\n";
+        if(PvaClient::debug) cout<< "calling CAClientFactory::stop()\n";
         CAClientFactory::stop();
-        if(getDebug()) cout<< "after calling CAClientFactory::stop()\n";
+        if(PvaClient::debug) cout<< "after calling CAClientFactory::stop()\n";
     }
-channelRegistry.reset();
 }
 
 string PvaClient:: getRequesterName()
@@ -191,7 +170,7 @@ PvaClientChannelPtr PvaClient::channel(
         std::string const & providerName,
         double timeOut)
 {
-    PvaClientChannelPtr pvaClientChannel =
+    PvaClientChannelPtr pvaClientChannel = 
         pvaClientChannelCache->getChannel(channelName,providerName);
     if(pvaClientChannel) return pvaClientChannel;
     pvaClientChannel = createChannel(channelName,providerName);
@@ -231,3 +210,4 @@ size_t PvaClient::cacheSize()
 }
 
 }}
+

src/pvaClientChannel.cpp

@@ -18,6 +18,7 @@
 
 #include <pv/pvaClient.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -121,12 +122,60 @@ size_t PvaClientPutCache::cacheSize()
 
 }
 
+class epicsShareClass ChannelRequesterImpl : public ChannelRequester
+{
+    PvaClientChannel::weak_pointer pvaClientChannel;
+    PvaClient::weak_pointer pvaClient;
+public:
+    ChannelRequesterImpl(
+        PvaClientChannelPtr const & pvaClientChannel,
+        PvaClientPtr const &pvaClient)
+    : pvaClientChannel(pvaClientChannel),
+      pvaClient(pvaClient)
+    {}
+    virtual ~ChannelRequesterImpl() {
+        if(PvaClient::getDebug()) std::cout << "~ChannelRequesterImpl" << std::endl;
+    }
+
+    virtual std::string getRequesterName() {
+        PvaClientChannelPtr clientChannel(pvaClientChannel.lock());
+        if(!clientChannel) return string("clientChannel is null");
+        return clientChannel->getRequesterName();
+    }
+
+    virtual void message(std::string const & message, epics::pvData::MessageType messageType) {
+        PvaClientChannelPtr clientChannel(pvaClientChannel.lock());
+        if(!clientChannel) return;
+        clientChannel->message(message,messageType);
+    }
+
+    virtual void channelCreated(
+         const epics::pvData::Status& status,
+         Channel::shared_pointer const & channel)
+    {
+        PvaClientChannelPtr clientChannel(pvaClientChannel.lock());
+        if(!clientChannel) return;
+        clientChannel->channelCreated(status,channel);
+    }
+
+    virtual void channelStateChange(
+          Channel::shared_pointer const & channel,
+          Channel::ConnectionState connectionState)
+    {
+        PvaClientChannelPtr clientChannel(pvaClientChannel.lock());
+        if(!clientChannel) return;
+        clientChannel->channelStateChange(channel,connectionState);
+    }
+};
+
 PvaClientChannelPtr PvaClientChannel::create(
    PvaClientPtr const &pvaClient,
    string const & channelName,
    string const & providerName)
 {
     PvaClientChannelPtr channel(new PvaClientChannel(pvaClient,channelName,providerName));
+    channel->channelRequester = ChannelRequesterImplPtr(
+        new ChannelRequesterImpl(channel,pvaClient));
     return channel;
 }
 
@@ -169,7 +218,6 @@ void PvaClientChannel::channelCreated(const Status& status, Channel::shared_poin
            << endl;
     }
     Lock xx(mutex);
-    this->channel = channel;
     if(connectState==connected) return;
     if(connectState!=connectActive) {
          string message("PvaClientChannel::channelCreated");
@@ -183,7 +231,7 @@ void PvaClientChannel::channelCreated(const Status& status, Channel::shared_poin
         throw std::runtime_error(message);
     }
     if(channel->isConnected()) {
-        connectState = connected;
+        connectState = connected; 
         waitForConnect.signal();
     }
 }
@@ -198,28 +246,25 @@ void PvaClientChannel::channelStateChange(
         << " " << Channel::ConnectionStateNames[connectionState]
         << endl;
     }
-    bool waitingForConnect = false;
-    if(connectState==connectActive) waitingForConnect = true;
-    if(connectionState!=Channel::CONNECTED) {
-        Lock xx(mutex);
-        string mess(channelName +
-                " connection state " + Channel::ConnectionStateNames[connectionState]);
-        message(mess,errorMessage);
-        connectState = notConnected;
-    } else {
-        Lock xx(mutex);
-        this->channel = channel;
-        connectState = connected;
-    }
-    if(waitingForConnect) {
-         Lock xx(mutex);
-         waitForConnect.signal();
-    }
     PvaClientChannelStateChangeRequesterPtr req(stateChangeRequester.lock());
     if(req) {
          bool value = (connectionState==Channel::CONNECTED ? true :  false);
          req->channelStateChange(shared_from_this(),value);
     }
+   
+    Lock xx(mutex);
+    bool waitingForConnect = false;
+    if(connectState==connectActive) waitingForConnect = true;
+    if(connectionState!=Channel::CONNECTED) {
+         string mess(channelName +
+             " connection state " + Channel::ConnectionStateNames[connectionState]);
+             message(mess,errorMessage);
+             connectState = notConnected;
+         return;
+    } else {
+        connectState = connected;
+    }
+    if(waitingForConnect) waitForConnect.signal();
 }
 
 string PvaClientChannel::getRequesterName()
@@ -252,9 +297,6 @@ void PvaClientChannel::setStateChangeRequester(
     PvaClientChannelStateChangeRequesterPtr const & stateChangeRequester)
 {
     this->stateChangeRequester = stateChangeRequester;
-    bool isConnected = false;
-    if(channel) isConnected = channel->isConnected();
-    stateChangeRequester->channelStateChange(shared_from_this(),isConnected);
 }
 
 void PvaClientChannel::connect(double timeout)
@@ -267,7 +309,7 @@ void PvaClientChannel::connect(double timeout)
     Status status = waitConnect(timeout);
     if(status.isOK()) return;
     if(PvaClient::getDebug()) cout << "PvaClientChannel::connect  waitConnect failed\n";
-    string message = string("channel ") + channelName
+    string message = string("channel ") + channelName 
                     + " PvaClientChannel::connect " + status.getMessage();
     throw std::runtime_error(message);
 }
@@ -286,13 +328,13 @@ void PvaClientChannel::issueConnect()
         }
         connectState = connectActive;
     }
-    ChannelProviderRegistry::shared_pointer reg(ChannelProviderRegistry::clients());
+    ChannelProviderRegistry::shared_pointer reg = getChannelProviderRegistry();
-    channelProvider = reg->getProvider(providerName);
+    ChannelProvider::shared_pointer provider = reg->getProvider(providerName);
-    if(!channelProvider) {
+    if(!provider) {
         throw std::runtime_error(channelName + " provider " + providerName + " not registered");
     }
     if(PvaClient::getDebug()) cout << "PvaClientChannel::issueConnect calling provider->createChannel\n";
-    channel = channelProvider->createChannel(channelName,shared_from_this(),ChannelProvider::PRIORITY_DEFAULT);
+    channel = provider->createChannel(channelName,channelRequester,ChannelProvider::PRIORITY_DEFAULT);
     if(!channel) {
          throw std::runtime_error(channelName + " channelCreate failed ");
     }
@@ -306,7 +348,6 @@ Status PvaClientChannel::waitConnect(double timeout)
     }
     {
         Lock xx(mutex);
-        if(!channel) return Status(Status::STATUSTYPE_ERROR,"");
         if(channel->isConnected()) return Status::Ok;
     }
     if(timeout>0.0) {
@@ -314,9 +355,8 @@ Status PvaClientChannel::waitConnect(double timeout)
     } else {
         waitForConnect.wait();
     }
-    if(!channel) return Status(Status::STATUSTYPE_ERROR,"pvaClientChannel::waitConnect channel is null");
     if(channel->isConnected()) return Status::Ok;
-    return Status(Status::STATUSTYPE_ERROR," not connected");
+    return Status(Status::STATUSTYPE_ERROR,channelName + " not connected");
 }
 
 
@@ -330,7 +370,7 @@ PvaClientProcessPtr PvaClientChannel::createProcess(string const & request)
 {
     PVStructurePtr pvRequest = createRequest->createRequest(request);
     if(!pvRequest) {
-        string message = string("channel ") + channelName
+        string message = string("channel ") + channelName 
             + " PvaClientChannel::createProcess invalid pvRequest: "
             + createRequest->getMessage();
         throw std::runtime_error(message);
@@ -343,19 +383,17 @@ PvaClientProcessPtr PvaClientChannel::createProcess(PVStructurePtr const &  pvRe
     if(connectState!=connected) connect(5.0);
     PvaClientPtr yyy = pvaClient.lock();
     if(!yyy) throw std::runtime_error("PvaClient was destroyed");
-    return PvaClientProcess::create(yyy,shared_from_this(),pvRequest);
+    return PvaClientProcess::create(yyy,channel,pvRequest);
 }
 
 
 PvaClientGetPtr PvaClientChannel::get(string const & request)
 {
     PvaClientGetPtr pvaClientGet = pvaClientGetCache->getGet(request);
-    if(!pvaClientGet) {
+    if(pvaClientGet) return pvaClientGet;
-        pvaClientGet = createGet(request);
+    pvaClientGet = createGet(request);
-        pvaClientGet->connect();
+    pvaClientGet->connect();
-        pvaClientGetCache->addGet(request,pvaClientGet);
+    pvaClientGetCache->addGet(request,pvaClientGet);
-    }
-    pvaClientGet->get();
     return pvaClientGet;
 }
 
@@ -364,7 +402,7 @@ PvaClientGetPtr PvaClientChannel::createGet(string const & request)
 {
     PVStructurePtr pvRequest = createRequest->createRequest(request);
     if(!pvRequest) {
-        string message = string("channel ") + channelName
+        string message = string("channel ") + channelName 
             + " PvaClientChannel::createGet invalid pvRequest: "
             + createRequest->getMessage();
         throw std::runtime_error(message);
@@ -377,27 +415,7 @@ PvaClientGetPtr PvaClientChannel::createGet(PVStructurePtr const &  pvRequest)
     if(connectState!=connected) connect(5.0);
     PvaClientPtr yyy = pvaClient.lock();
     if(!yyy) throw std::runtime_error("PvaClient was destroyed");
-    return PvaClientGet::create(yyy,shared_from_this(),pvRequest);
+    return PvaClientGet::create(yyy,channel,pvRequest);
-}
-
-double PvaClientChannel::getDouble(string const & request)
-{
-     return get(request)->getData()->getDouble();
-}
-
-string PvaClientChannel::getString(string const & request)
-{
-    return get(request)->getData()->getString();
-}
-
-shared_vector<const double>  PvaClientChannel::getDoubleArray(string const & request)
-{
-    return get(request)->getData()->getDoubleArray();
-}
-
-shared_vector<const std::string>  PvaClientChannel::getStringArray(string const & request)
-{
-    return get(request)->getData()->getStringArray();
 }
 
 
@@ -405,12 +423,10 @@ PvaClientPutPtr PvaClientChannel::put(string const & request)
 {
     PvaClientPutPtr pvaClientPut = pvaClientPutCache->getPut(request);
     if(pvaClientPut) return pvaClientPut;
-    if(!pvaClientPut) {
+    pvaClientPut = createPut(request);
-        pvaClientPut = createPut(request);
+    pvaClientPut->connect();
-        pvaClientPut->connect();
+    pvaClientPut->get();
-        pvaClientPut->get();
+    pvaClientPutCache->addPut(request,pvaClientPut);
-        pvaClientPutCache->addPut(request,pvaClientPut);
-    }
     return pvaClientPut;
 }
 
@@ -419,7 +435,7 @@ PvaClientPutPtr PvaClientChannel::createPut(string const & request)
 {
     PVStructurePtr pvRequest = createRequest->createRequest(request);
     if(!pvRequest) {
-        string message = string("channel ") + channelName
+        string message = string("channel ") + channelName 
             + " PvaClientChannel::createPut invalid pvRequest: "
             + createRequest->getMessage();
         throw std::runtime_error(message);
@@ -432,52 +448,14 @@ PvaClientPutPtr PvaClientChannel::createPut(PVStructurePtr const & pvRequest)
     if(connectState!=connected) connect(5.0);
     PvaClientPtr yyy = pvaClient.lock();
     if(!yyy) throw std::runtime_error("PvaClient was destroyed");
-    return PvaClientPut::create(yyy,shared_from_this(),pvRequest);
+    return PvaClientPut::create(yyy,channel,pvRequest);
-}
-
-void PvaClientChannel::putDouble(double value,string const & request)
-{
-    PvaClientPutPtr clientPut = put(request);
-    PvaClientPutDataPtr putData = clientPut->getData();
-    putData->putDouble(value); clientPut->put();
-}
-
-void PvaClientChannel::putString(std::string const & value,string const & request)
-{
-    PvaClientPutPtr clientPut = put(request);
-    PvaClientPutDataPtr putData = clientPut->getData();
-    putData->putString(value); clientPut->put();
-}
-
-void PvaClientChannel::putDoubleArray(
-    shared_vector<const double> const & value,
-    string const & request)
-{
-    PvaClientPutPtr clientPut = put(request);
-    PvaClientPutDataPtr putData = clientPut->getData();
-    size_t n = value.size();
-    shared_vector<double> valueArray(n);
-    for(size_t i=0; i<n; ++i) valueArray[i] = value[i];
-    putData->putDoubleArray(freeze(valueArray)); clientPut->put();
-}
-
-void PvaClientChannel::putStringArray(
-    shared_vector<const string> const & value,
-    string const & request)
-{
-    PvaClientPutPtr clientPut = put(request);
-    PvaClientPutDataPtr putData = clientPut->getData();
-    size_t n = value.size();
-    shared_vector<string> valueArray(n);
-    for(size_t i=0; i<n; ++i) valueArray[i] = value[i];
-    putData->putStringArray(freeze(valueArray)); clientPut->put();
 }
 
 PvaClientPutGetPtr PvaClientChannel::createPutGet(string const & request)
 {
     PVStructurePtr pvRequest = createRequest->createRequest(request);
     if(!pvRequest) {
-        string message = string("channel ") + channelName
+        string message = string("channel ") + channelName 
             + " PvaClientChannel::createPutGet invalid pvRequest: "
             + createRequest->getMessage();
         throw std::runtime_error(message);
@@ -490,7 +468,7 @@ PvaClientPutGetPtr PvaClientChannel::createPutGet(PVStructurePtr const & pvReque
     if(connectState!=connected) connect(5.0);
     PvaClientPtr yyy = pvaClient.lock();
     if(!yyy) throw std::runtime_error("PvaClient was destroyed");
-    return PvaClientPutGet::create(yyy,shared_from_this(),pvRequest);
+    return PvaClientPutGet::create(yyy,channel,pvRequest);
 }
 
 
@@ -499,7 +477,7 @@ PvaClientArrayPtr PvaClientChannel::createArray(string const & request)
 {
     PVStructurePtr pvRequest = createRequest->createRequest(request);
     if(!pvRequest) {
-        string message = string("channel ") + channelName
+        string message = string("channel ") + channelName 
             + " PvaClientChannel::createArray invalid pvRequest: "
             + createRequest->getMessage();
         throw std::runtime_error(message);
@@ -541,7 +519,7 @@ PvaClientMonitorPtr PvaClientChannel::createMonitor(string const & request)
 {
     PVStructurePtr pvRequest = createRequest->createRequest(request);
     if(!pvRequest) {
-        string message = string("channel ") + channelName
+        string message = string("channel ") + channelName 
             + " PvaClientChannel::createMonitor invalid pvRequest: "
             + createRequest->getMessage();
         throw std::runtime_error(message);
@@ -554,14 +532,14 @@ PvaClientMonitorPtr  PvaClientChannel::createMonitor(PVStructurePtr const &  pvR
     if(connectState!=connected) connect(5.0);
     PvaClientPtr yyy = pvaClient.lock();
     if(!yyy) throw std::runtime_error("PvaClient was destroyed");
-    return PvaClientMonitor::create(yyy,shared_from_this(),pvRequest);
+    return PvaClientMonitor::create(yyy,channel,pvRequest);
 }
 
 PVStructurePtr PvaClientChannel::rpc(
     PVStructurePtr const &  pvRequest,
     PVStructurePtr const & pvArgument)
 {
-
+    
     PvaClientRPCPtr rpc = createRPC(pvRequest);
     return rpc->request(pvArgument);
 }

src/pvaClientData.cpp

@@ -1,440 +0,0 @@
-/* pvaClientData.cpp */
-/**
- * Copyright - See the COPYRIGHT that is included with this distribution.
- * EPICS pvData is distributed subject to a Software License Agreement found
- * in file LICENSE that is included with this distribution.
- */
-/**
- * @author mrk
- * @date 2019.04
- */
-
-#include <typeinfo>
-#include <sstream>
-#include <istream>
-#include <ostream>
-
-#include <pv/createRequest.h>
-#include <pv/convert.h>
-#include <pv/pvEnumerated.h>
-
-#if EPICS_VERSION_INT>=VERSION_INT(3,15,0,1)
-#  include <pv/json.h>
-#  define USE_JSON
-#endif
-
-#define epicsExportSharedSymbols
-
-#include <pv/pvaClient.h>
-
-using std::tr1::static_pointer_cast;
-using namespace epics::pvData;
-using namespace epics::pvAccess;
-using namespace std;
-
-namespace epics { namespace pvaClient {
-
-
-typedef std::tr1::shared_ptr<PVArray> PVArrayPtr;
-static ConvertPtr convert = getConvert();
-static string noStructure("no pvStructure ");
-static string noValue("no value field");
-static string noScalar("value is not a scalar");
-static string noArray("value is not an array");
-static string noScalarArray("value is not a scalarArray");
-static string noAlarm("no alarm");
-static string noTimeStamp("no timeStamp");
-
-PvaClientDataPtr PvaClientData::create(StructureConstPtr const & structure)
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::create\n";
-    PvaClientDataPtr epv(new PvaClientData(structure));
-    return epv;
-}
-
-PvaClientData::PvaClientData(StructureConstPtr const & structure)
-: structure(structure)
-{
-}
-
-PVFieldPtr PvaClientData::getSinglePVField()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::getSinglePVField\n";
-    PVStructurePtr pvStructure = getPVStructure();
-    while(true) {
-         const PVFieldPtrArray fieldPtrArray(pvStructure->getPVFields());
-         if(fieldPtrArray.size()==0) {
-              throw std::logic_error("PvaClientData::getSinglePVField() pvRequest for empty structure");
-         }
-         if(fieldPtrArray.size()!=1) {
-              PVFieldPtr pvValue  = pvStructure->getSubField("value");
-              if(pvValue) {
-                  Type type = pvValue->getField()->getType();
-                  if(type!=epics::pvData::structure) return pvValue;
-              }
-              throw std::logic_error("PvaClientData::getSinglePVField() pvRequest for multiple fields");
-         }
-         PVFieldPtr pvField(fieldPtrArray[0]);
-         Type type = pvField->getField()->getType();
-         if(type!=epics::pvData::structure) return pvField;
-         pvStructure = static_pointer_cast<PVStructure>(pvField);
-    }
-}
-
-void PvaClientData::checkValue()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::checkValue\n";
-    if(pvValue) return;
-    throw std::runtime_error(messagePrefix + noValue);
-}
-
-void PvaClientData::setMessagePrefix(std::string const & value)
-{
-    messagePrefix = value + " ";
-}
-
-StructureConstPtr PvaClientData::getStructure()
-{
-    return structure;
-}
-
-PVStructurePtr PvaClientData::getPVStructure()
-{
-    if(pvStructure) return pvStructure;
-    throw std::runtime_error(messagePrefix + noStructure);
-}
-
-BitSetPtr PvaClientData::getChangedBitSet()
-{
-    if(bitSet)return bitSet;
-    throw std::runtime_error(messagePrefix + noStructure);
-}
-
-std::ostream & PvaClientData::showChanged(std::ostream & out)
-{
-    if(!bitSet) throw std::runtime_error(messagePrefix + noStructure);
-    size_t nextSet = bitSet->nextSetBit(0);
-    PVFieldPtr pvField;
-    while(nextSet!=string::npos) {
-        if(nextSet==0) {
-             pvField = pvStructure;
-        } else {
-              pvField = pvStructure->getSubField(nextSet);
-        }
-        string name = pvField->getFullName();
-        out << name << " = " << pvField << endl;
-        nextSet = bitSet->nextSetBit(nextSet+1);
-    }
-    return out;
-}
-
-void PvaClientData::setData(
-    PVStructurePtr const & pvStructureFrom,
-    BitSetPtr const & bitSetFrom)
-{
-   if(PvaClient::getDebug()) cout << "PvaClientData::setData\n";
-   pvStructure = pvStructureFrom;
-   bitSet = bitSetFrom;
-   pvValue = pvStructure->getSubField("value");
-}
-
-
-bool PvaClientData::hasValue()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::hasValue\n";
-    if(!pvValue) return false;
-    return true;
-}
-
-bool PvaClientData::isValueScalar()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::isValueScalar\n";
-    if(!pvValue) return false;
-    if(pvValue->getField()->getType()==scalar) return true;
-    return false;
-}
-
-bool PvaClientData::isValueScalarArray()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::isValueScalarArray\n";
-    if(!pvValue) return false;
-    if(pvValue->getField()->getType()==scalarArray) return true;
-    return false;
-}
-
-PVFieldPtr  PvaClientData::getValue()
-{
-   if(PvaClient::getDebug()) cout << "PvaClientData::getValue\n";
-   checkValue();
-   return pvValue;
-}
-
-PVScalarPtr  PvaClientData::getScalarValue()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::getScalarValue\n";
-    checkValue();
-    if(pvValue->getField()->getType()!=scalar) {
-       throw std::runtime_error(messagePrefix + noScalar);
-    }
-    return pvStructure->getSubField<PVScalar>("value");
-}
-
-PVArrayPtr  PvaClientData::getArrayValue()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::getArrayValue\n";
-    checkValue();
-    Type type = pvValue->getField()->getType();
-    if(type!=scalarArray && type!=structureArray && type!=unionArray) {
-        throw std::runtime_error(messagePrefix + noArray);
-    }
-    return pvStructure->getSubField<PVArray>("value");
-}
-
-PVScalarArrayPtr  PvaClientData::getScalarArrayValue()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::getScalarArrayValue\n";
-    checkValue();
-    Type type = pvValue->getField()->getType();
-    if(type!=scalarArray) {
-        throw std::runtime_error(messagePrefix + noScalarArray);
-    }
-    return pvStructure->getSubField<PVScalarArray>("value");
-}
-
-double PvaClientData::getDouble()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::getDouble\n";
-    PVFieldPtr pvField = getSinglePVField();
-    Type type = pvField->getField()->getType();
-    if(type!=scalar) {
-        throw std::logic_error("PvaClientData::getDouble() did not find a scalar field");
-    }
-    PVScalarPtr pvScalar = static_pointer_cast<PVScalar>(pvField);
-    ScalarType scalarType = pvScalar->getScalar()->getScalarType();
-    if(scalarType==pvDouble) {
-        PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
-        return pvDouble->get();
-    }
-    if(!ScalarTypeFunc::isNumeric(scalarType)) {
-        throw std::logic_error(
-            "PvaClientData::getDouble() did not find a numeric scalar field");
-    }
-    return convert->toDouble(pvScalar);
-}
-
-string PvaClientData::getString()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::getString\n";
-    PVFieldPtr pvField = getSinglePVField();
-    Type type = pvField->getField()->getType();
-    if(type!=scalar) {
-        throw std::logic_error("PvaClientData::getString() did not find a scalar field");
-    }
-    PVScalarPtr pvScalar = static_pointer_cast<PVScalar>(pvField);
-    return convert->toString(pvScalar);
-}
-
-shared_vector<const double> PvaClientData::getDoubleArray()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::getDoubleArray\n";
-    PVFieldPtr pvField = getSinglePVField();
-    Type type = pvField->getField()->getType();
-    if(type!=scalarArray) {
-        throw std::logic_error("PvaClientData::getDoubleArray() did not find a scalarArray field");
-    }
-    PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
-    ScalarType scalarType = pvScalarArray->getScalarArray()->getElementType();
-    if(!ScalarTypeFunc::isNumeric(scalarType)) {
-        throw std::logic_error(
-            "PvaClientData::getDoubleArray() did not find a numeric scalarArray field");
-    }
-    shared_vector<const double> retValue;
-    pvScalarArray->getAs<const double>(retValue);
-    return retValue;
-}
-
-shared_vector<const string> PvaClientData::getStringArray()
-{
-    if(PvaClient::getDebug()) cout << "PvaClientData::getStringArray\n";
-    PVFieldPtr pvField = getSinglePVField();
-    Type type = pvField->getField()->getType();
-    if(type!=scalarArray) {
-        throw std::logic_error("PvaClientData::getStringArray() did not find a scalarArray field");
-    }
-    PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
-    shared_vector<const string> retValue;
-    pvScalarArray->getAs<const string>(retValue);
-    return retValue;
-}
-
-Alarm PvaClientData::getAlarm()
-{
-   if(PvaClient::getDebug()) cout << "PvaClientData::getAlarm\n";
-   if(!pvStructure) throw new std::runtime_error(messagePrefix + noStructure);
-   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("alarm");
-   if(!pvs) throw std::runtime_error(messagePrefix + noAlarm);
-   pvAlarm.attach(pvs);
-   if(pvAlarm.isAttached()) {
-       Alarm alarm;
-       pvAlarm.get(alarm);
-       pvAlarm.detach();
-       return alarm;
-   }
-   throw std::runtime_error(messagePrefix + noAlarm);
-}
-
-TimeStamp PvaClientData::getTimeStamp()
-{
-   if(PvaClient::getDebug()) cout << "PvaClientData::getTimeStamp\n";
-   if(!pvStructure) throw new std::runtime_error(messagePrefix + noStructure);
-   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("timeStamp");
-   if(!pvs) throw std::runtime_error(messagePrefix + noTimeStamp);
-   pvTimeStamp.attach(pvs);
-   if(pvTimeStamp.isAttached()) {
-       TimeStamp timeStamp;
-       pvTimeStamp.get(timeStamp);
-       pvTimeStamp.detach();
-       return timeStamp;
-   }
-   throw std::runtime_error(messagePrefix + noTimeStamp);
-}
-
-void PvaClientData::zeroArrayLength()
-{
-    if(!pvStructure) throw new std::runtime_error(messagePrefix + noStructure);
-    zeroArrayLength(pvStructure);
-}
-void PvaClientData::parse(
-    const std::string &arg,const PVFieldPtr &dest,BitSetPtr & bitSet)
-{
-#ifdef USE_JSON
-    std::istringstream strm(arg);
-    parseJSON(strm, dest,&(*bitSet));
-#else
-    throw std::runtime_error("JSON support not built");
-#endif
-}
-
-void PvaClientData::parse(
-    const std::string &arg,const PVUnionPtr &pvUnion)
-{
-    if(pvUnion->getUnion()->isVariant()) {
-          throw std::runtime_error(messagePrefix + "varient union not implemented");
-    }
-    size_t iequals = arg.find_first_of('=');
-    string field;
-    string rest;
-    if(iequals==std::string::npos) {
-        string mess(arg);
-        mess += " was expected to start with field=";
-          throw std::runtime_error(messagePrefix + mess);
-    }
-    field = arg.substr(0,iequals);
-    rest = arg.substr(iequals+1);
-    PVFieldPtr pvField(pvUnion->select(field));
-    if(pvField->getField()->getType()==epics::pvData::union_) {
-        PVUnionPtr pvu = static_pointer_cast<PVUnion>(pvField);
-        parse(rest,pvu);
-        return;
-    }
-    BitSetPtr bs;
-    parse(rest,pvField,bs);
-    return;
-}
-
-void PvaClientData::parse(const std::vector<std::string> &args)
-{
-    if(!pvStructure) throw std::runtime_error(messagePrefix + noStructure);
-    if(!bitSet) throw std::runtime_error(messagePrefix + noStructure);
-    size_t num = args.size();
-    if(num<1) throw std::runtime_error(messagePrefix + " no arguments");
-    for(size_t i=0; i<num; ++i)
-    {
-        string val = args[i];
-        size_t iequals = val.find_first_of('=');
-        string field;
-        string rest(val);
-        if(iequals==std::string::npos) {
-           parse(rest,pvStructure,bitSet);
-           continue;
-        }
-        field = val.substr(0,iequals);
-        rest = val.substr(iequals+1);
-        if(field.size()==std::string::npos) {
-           parse(rest,pvStructure,bitSet);
-           continue;
-        }
-        PVFieldPtr pvField(pvStructure->getSubField(field));
-        if(!pvField) throw std::runtime_error(messagePrefix + field +" does not exist");
-        // look for enumerated structure
-        PVEnumerated pvEnumerated;
-        bool result = pvEnumerated.attach(pvField);
-        if(result) {
-             PVStringArray::const_svector choices(pvEnumerated.getChoices());
-             for(size_t i=0; i<choices.size(); ++i) {
-                  if(choices[i]==rest) {
-                     pvEnumerated.setIndex(i);
-                     return;
-                  }
-             }
-        }
-        // look for union
-        PVUnionPtr pvUnion(pvStructure->getSubField<PVUnion>(field));
-        if(pvUnion) {
-            parse(rest,pvUnion);
-            bitSet->set(pvUnion->getFieldOffset());
-            return;
-        }
-        parse(rest,pvField,bitSet);
-    }
-}
-
-void PvaClientData::streamJSON(
-               std::ostream& strm,
-               bool ignoreUnprintable,
-               bool multiLine)
-{
-#ifdef USE_JSON
-    JSONPrintOptions opts;
-    opts.ignoreUnprintable = ignoreUnprintable;
-    opts.multiLine = multiLine;
-    printJSON(strm,*pvStructure,*bitSet,opts);
-#else
-    throw std::runtime_error("JSON support not built");
-#endif
-}
-
-
-void PvaClientData::zeroArrayLength(const epics::pvData::PVStructurePtr &pvStructure)
-{
-const PVFieldPtrArray pvFields(pvStructure->getPVFields());
-    for(size_t i=0; i<pvFields.size(); ++i) {
-        PVFieldPtr pvField = pvFields[i];
-        Type type(pvField->getField()->getType());
-        switch(type) {
-        case epics::pvData::scalarArray:
-            {
-                PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
-                pvScalarArray->setLength(0);
-            }
-            break;
-        case epics::pvData::structureArray:
-            {
-                PVStructureArrayPtr pvStructureArray = static_pointer_cast<PVStructureArray>(pvField);
-                pvStructureArray->setLength(0);
-            }
-            break;
-        case epics::pvData::structure:
-            {
-                PVStructurePtr pvStructure = static_pointer_cast<PVStructure>(pvField);
-                zeroArrayLength(pvStructure);
-            }
-            break;
-        default:
-               break;
-        }
-    }
-}
-
-
-}}

src/pvaClientGet.cpp

@@ -15,6 +15,7 @@
 
 #include <pv/pvaClient.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -55,7 +56,7 @@ public:
     {
         PvaClientGetPtr clientGet(pvaClientGet.lock());
         if(!clientGet) return;
-        clientGet->channelGetConnect(status,channelGet,structure);
+        clientGet->channelGetConnect(status,channelGet,structure);  
     }
 
     virtual void getDone(
@@ -72,66 +73,50 @@ public:
 
 PvaClientGetPtr PvaClientGet::create(
         PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
+        Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
 {
-    if(PvaClient::getDebug()) {
+    PvaClientGetPtr epv(new PvaClientGet(pvaClient,channel,pvRequest));
-         cout<< "PvaClientGet::create(pvaClient,channelName,pvRequest)\n"
+    epv->channelGetRequester = ChannelGetRequesterImplPtr(
-             << " channelName " <<  pvaClientChannel->getChannel()->getChannelName()
+        new ChannelGetRequesterImpl(epv,pvaClient));
-             << " pvRequest " << pvRequest
+    return epv;
-             << endl;
-    }
-    PvaClientGetPtr clientGet(new PvaClientGet(pvaClient,pvaClientChannel,pvRequest));
-    clientGet->channelGetRequester = ChannelGetRequesterImplPtr(
-        new ChannelGetRequesterImpl(clientGet,pvaClient));
-    return clientGet;
 }
 
+
 PvaClientGet::PvaClientGet(
         PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
+        Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
 : pvaClient(pvaClient),
-  pvaClientChannel(pvaClientChannel),
+  channel(channel),
   pvRequest(pvRequest),
   connectState(connectIdle),
   getState(getIdle)
 {
      if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::PvaClientGet channelName "
+        cout << "PvaClientGet::PvaClientGet::PvaClientGet"
-             << pvaClientChannel->getChannel()->getChannelName() << "\n";
+           << " channelName " << channel->getChannelName()
+           << endl;
     }
 }
 
 PvaClientGet::~PvaClientGet()
 {
     if(PvaClient::getDebug()) {
-        cout<< "PvaClientGet::~PvaClientGet channelName "
+        string channelName("disconnected");
-           << pvaClientChannel->getChannel()->getChannelName() << "\n";
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
+         cout<< "PvaClientGet::~PvaClientGet"
+           << " channelName " << channelName
+           << endl;
     }
+    if(channelGet) channelGet->destroy();
 }
 
-
+void PvaClientGet::checkGetState()
-void PvaClientGet::checkConnectState()
 {
-    if(PvaClient::getDebug()) {
+    if(connectState==connectIdle) connect();
-        cout << "PvaClientGet::checkConnectState channelName "
+    if(getState==getIdle) get();
-           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-    }
-    if(!pvaClientChannel->getChannel()->isConnected()) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " PvaClientGet::checkConnectState channel not connected ";
-        throw std::runtime_error(message);
-    }
-    if(connectState==connectIdle) {
-        connect();
-    }
-    if(connectState==connectActive){
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " "
-            + channelGetConnectStatus.getMessage();
-        throw std::runtime_error(message);
-    }
 }
 
 // from ChannelGetRequester
@@ -155,34 +140,26 @@ void PvaClientGet::channelGetConnect(
     StructureConstPtr const & structure)
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::channelGetConnect channelName "
+        string channelName("disconnected");
-           << pvaClientChannel->getChannel()->getChannelName()
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
+        cout << "PvaClientGet::channelGetConnect"
+           << " channelName " << channelName
            << " status.isOK " << (status.isOK() ? "true" : "false")
-           << "\n";
+           << endl;
     }
     {
         Lock xx(mutex);
+        channelGetConnectStatus = status;
+        connectState = connected;
         this->channelGet = channelGet;
         if(status.isOK()) {
-            channelGetConnectStatus = status;
-            connectState = connected;
             pvaClientData = PvaClientGetData::create(structure);
             pvaClientData->setMessagePrefix(channelGet->getChannel()->getChannelName());
-        } else {
-             stringstream ss;
-             ss << pvRequest;
-             string message = string("\nPvaClientGet::channelGetConnect)")
-               + "\npvRequest\n" + ss.str()
-               + "\nerror\n" + status.getMessage();
-             channelGetConnectStatus = Status(Status::STATUSTYPE_ERROR,message);
         }
     }
-    PvaClientGetRequesterPtr  req(pvaClientGetRequester.lock());
-    if(req) {
-          req->channelGetConnect(status,shared_from_this());
-    }
     waitForConnect.signal();
-
+    
 }
 
 void PvaClientGet::getDone(
@@ -192,62 +169,57 @@ void PvaClientGet::getDone(
     BitSetPtr const & bitSet)
 {
     if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::getDone channelName "
+        string channelName("disconnected");
-           << pvaClientChannel->getChannel()->getChannelName()
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
+        cout << "PvaClientGet::getDone"
+           << " channelName " << channelName
            << " status.isOK " << (status.isOK() ? "true" : "false")
-           << "\n";
+           << endl;
     }
     {
         Lock xx(mutex);
         channelGetStatus = status;
-        getState = getComplete;
         if(status.isOK()) {
             pvaClientData->setData(pvStructure,bitSet);
         }
     }
-    PvaClientGetRequesterPtr  req(pvaClientGetRequester.lock());
-    if(req) {
-          req->getDone(status,shared_from_this());
-    }
     waitForGet.signal();
 }
 
 void PvaClientGet::connect()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::connect channelName "
-           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-    }
     issueConnect();
     Status status = waitConnect();
     if(status.isOK()) return;
-    string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+    Channel::shared_pointer chan(channel.lock());
+    string channelName("disconnected");
+    if(chan) channelName = chan->getChannelName();
+    string message = string("channel ") + channelName 
          + " PvaClientGet::connect " + status.getMessage();
     throw std::runtime_error(message);
 }
 
 void PvaClientGet::issueConnect()
 {
-    if(PvaClient::getDebug()) {
+    Channel::shared_pointer chan(channel.lock());
-        cout << "PvaClientGet::issueConnect channelName "
-           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-    }
     if(connectState!=connectIdle) {
-        string message = string("channel ")  + pvaClientChannel->getChannel()->getChannelName()
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " pvaClientGet already connected ";
         throw std::runtime_error(message);
     }
-    connectState = connectActive;
+    if(chan) {
-    channelGetConnectStatus = Status(Status::STATUSTYPE_ERROR, "connect active");
+        connectState = connectActive;
-    channelGet = pvaClientChannel->getChannel()->createChannelGet(channelGetRequester,pvRequest);
+        channelGet = chan->createChannelGet(channelGetRequester,pvRequest);
+        return;
+    }
+    throw std::runtime_error("PvaClientGet::issueConnect channel was destroyed");
 }
 
 Status PvaClientGet::waitConnect()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::waitConnect channelName "
-           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-    }
     {
         Lock xx(mutex);
         if(connectState==connected) {
@@ -255,7 +227,10 @@ Status PvaClientGet::waitConnect()
              return channelGetConnectStatus;
         }
         if(connectState!=connectActive) {
-            string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+            Channel::shared_pointer chan(channel.lock());
+            string channelName("disconnected");
+            if(chan) channelName = chan->getChannelName();
+            string message = string("channel ") + channelName
                 + " PvaClientGet::waitConnect illegal connect state ";
             throw std::runtime_error(message);
         }
@@ -267,27 +242,25 @@ Status PvaClientGet::waitConnect()
 
 void PvaClientGet::get()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::get channelName "
-          << pvaClientChannel->getChannel()->getChannelName() << "\n";
-    }
     issueGet();
     Status status = waitGet();
     if(status.isOK()) return;
-    string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+    Channel::shared_pointer chan(channel.lock());
+    string channelName("disconnected");
+    if(chan) channelName = chan->getChannelName();
+    string message = string("channel ") + channelName
             + " PvaClientGet::get " + status.getMessage();
     throw std::runtime_error(message);
 }
 
 void PvaClientGet::issueGet()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::issueGet channelName "
-           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-    }
     if(connectState==connectIdle) connect();
-    if(getState==getActive) {
+    if(getState!=getIdle) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+        Channel::shared_pointer chan(channel.lock());
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " PvaClientGet::issueGet get aleady active ";
         throw std::runtime_error(message);
     }
@@ -297,51 +270,30 @@ void PvaClientGet::issueGet()
 
 Status PvaClientGet::waitGet()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::waitGet channelName "
-           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-    }
     {
         Lock xx(mutex);
         if(getState==getComplete) {
-            getState = getIdle;
+            getState =getIdle;
             return channelGetStatus;
         }
         if(getState!=getActive){
-            string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+            Channel::shared_pointer chan(channel.lock());
+            string channelName("disconnected");
+            if(chan) channelName = chan->getChannelName();
+            string message = string("channel ") + channelName 
                 + " PvaClientGet::waitGet llegal get state";
             throw std::runtime_error(message);
         }
     }
     waitForGet.wait();
-    getState = getComplete;
+    getState = getIdle;
     return channelGetStatus;
 }
 PvaClientGetDataPtr PvaClientGet::getData()
 {
-    if(PvaClient::getDebug()) {
+    checkGetState();
-           cout<< "PvaClientGet::getData  channelName "
-               << pvaClientChannel->getChannel()->getChannelName() << "\n";
-    }
-    checkConnectState();
-    if(getState==getIdle) get();
     return pvaClientData;
 }
 
-void PvaClientGet::setRequester(PvaClientGetRequesterPtr const & pvaClientGetRequester)
-{
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientGet::setRequester channelName "
-           << pvaClientChannel->getChannel()->getChannelName() << "\n";
-    }
-    this->pvaClientGetRequester = pvaClientGetRequester;
-}
-
-PvaClientChannelPtr PvaClientGet::getPvaClientChannel()
-{
-    return pvaClientChannel;
-}
-
-
 
 }}

src/pvaClientGetData.cpp

@@ -19,6 +19,7 @@
 
 #include <pv/pvaClient.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -26,15 +27,199 @@ using namespace std;
 namespace epics { namespace pvaClient {
 
 
+typedef std::tr1::shared_ptr<PVArray> PVArrayPtr;
+static ConvertPtr convert = getConvert();
+static string noStructure("no pvStructure ");
+static string noValue("no value field");
+static string noScalar("value is not a scalar");
+static string notCompatibleScalar("value is not a compatible scalar");
+static string noArray("value is not an array");
+static string noScalarArray("value is not a scalarArray");
+static string notDoubleArray("value is not a doubleArray");
+static string notStringArray("value is not a stringArray");
+static string noAlarm("no alarm");
+static string noTimeStamp("no timeStamp");
+
 PvaClientGetDataPtr PvaClientGetData::create(StructureConstPtr const & structure)
 {
-    if(PvaClient::getDebug()) cout << "PvaClientGetData::create\n";
     PvaClientGetDataPtr epv(new PvaClientGetData(structure));
     return epv;
 }
 
 PvaClientGetData::PvaClientGetData(StructureConstPtr const & structure)
-: PvaClientData(structure)
+: structure(structure)
-{}
+{
+    messagePrefix = "";
+}
+
+void PvaClientGetData::checkValue()
+{
+    if(pvValue) return;
+    throw std::runtime_error(messagePrefix + noValue);
+}
+
+void PvaClientGetData::setMessagePrefix(std::string const & value)
+{
+    messagePrefix = value + " ";
+}
+
+StructureConstPtr PvaClientGetData::getStructure()
+{return structure;}
+
+PVStructurePtr PvaClientGetData::getPVStructure()
+{
+    if(pvStructure) return pvStructure;
+    throw std::runtime_error(messagePrefix + noStructure);
+}
+
+BitSetPtr PvaClientGetData::getChangedBitSet()
+{
+    if(bitSet)return bitSet;
+    throw std::runtime_error(messagePrefix + noStructure);
+}
+
+std::ostream & PvaClientGetData::showChanged(std::ostream & out)
+{
+    if(!bitSet) throw std::runtime_error(messagePrefix + noStructure);
+    size_t nextSet = bitSet->nextSetBit(0);
+    PVFieldPtr pvField;
+    while(nextSet!=string::npos) {
+        if(nextSet==0) {
+             pvField = pvStructure;
+        } else {
+              pvField = pvStructure->getSubField(nextSet);
+        }
+        string name = pvField->getFullName();
+        out << name << " = " << pvField << endl;
+        nextSet = bitSet->nextSetBit(nextSet+1);
+    }
+    return out;
+}
+
+void PvaClientGetData::setData(
+    PVStructurePtr const & pvStructureFrom,
+    BitSetPtr const & bitSetFrom)
+{
+   pvStructure = pvStructureFrom;
+   bitSet = bitSetFrom;
+   pvValue = pvStructure->getSubField("value");
+}
+
+bool PvaClientGetData::hasValue()
+{
+    if(!pvValue) return false;
+    return true;
+}
+
+bool PvaClientGetData::isValueScalar()
+{
+    if(!pvValue) return false;
+    if(pvValue->getField()->getType()==scalar) return true;
+    return false;
+}
+
+bool PvaClientGetData::isValueScalarArray()
+{
+    if(!pvValue) return false;
+    if(pvValue->getField()->getType()==scalarArray) return true;
+    return false;
+}
+
+PVFieldPtr  PvaClientGetData::getValue()
+{
+   checkValue();
+   return pvValue;
+}
+
+PVScalarPtr  PvaClientGetData::getScalarValue()
+{
+    checkValue();
+    PVScalarPtr pv = pvStructure->getSubField<PVScalar>("value");
+    if(!pv) throw std::runtime_error(messagePrefix + noScalar);
+    return pv;
+}
+
+PVArrayPtr  PvaClientGetData::getArrayValue()
+{
+    checkValue();
+    PVArrayPtr pv = pvStructure->getSubField<PVArray>("value");
+    if(!pv) throw std::runtime_error(messagePrefix + noArray);
+    return pv;
+}
+
+PVScalarArrayPtr  PvaClientGetData::getScalarArrayValue()
+{
+    checkValue();
+    PVScalarArrayPtr pv = pvStructure->getSubField<PVScalarArray>("value");
+    if(!pv) throw std::runtime_error(messagePrefix + noScalarArray);
+    return pv;
+}
+
+double PvaClientGetData::getDouble()
+{
+    PVScalarPtr pvScalar = getScalarValue();
+    ScalarType scalarType = pvScalar->getScalar()->getScalarType();
+    if(scalarType==pvDouble) {
+        PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
+        return pvDouble->get();
+    }
+    if(!ScalarTypeFunc::isNumeric(scalarType)) {
+        throw std::runtime_error(messagePrefix + notCompatibleScalar);
+    }
+    return convert->toDouble(pvScalar);
+}
+
+string PvaClientGetData::getString()
+{
+    PVScalarPtr pvScalar = getScalarValue();
+    return convert->toString(pvScalar);
+}
+
+shared_vector<const double> PvaClientGetData::getDoubleArray()
+{
+    checkValue();
+    PVDoubleArrayPtr pv = pvStructure->getSubField<PVDoubleArray>("value");
+    if(!pv) throw std::runtime_error(messagePrefix + notDoubleArray);
+    return pv->view();   
+}
+
+shared_vector<const string> PvaClientGetData::getStringArray()
+{
+    checkValue();
+    PVStringArrayPtr pv = pvStructure->getSubField<PVStringArray>("value");
+    if(!pv) throw std::runtime_error(messagePrefix + notStringArray);
+    return pv->view();   
+}
+
+
+Alarm PvaClientGetData::getAlarm()
+{
+   if(!pvStructure) throw new std::runtime_error(messagePrefix + noStructure);
+   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("alarm");
+   if(!pvs) throw std::runtime_error(messagePrefix + noAlarm);
+   pvAlarm.attach(pvs);
+   if(pvAlarm.isAttached()) {
+       Alarm alarm;
+       pvAlarm.get(alarm);
+       pvAlarm.detach();
+       return alarm;
+   }
+   throw std::runtime_error(messagePrefix + noAlarm);
+}
+
+TimeStamp PvaClientGetData::getTimeStamp()
+{
+   if(!pvStructure) throw new std::runtime_error(messagePrefix + noStructure);
+   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("timeStamp");
+   if(!pvs) throw std::runtime_error(messagePrefix + noTimeStamp);
+   pvTimeStamp.attach(pvs);
+   if(pvTimeStamp.isAttached()) {
+       TimeStamp timeStamp;
+       pvTimeStamp.get(timeStamp);
+       pvTimeStamp.detach();
+       return timeStamp;
+   }
+   throw std::runtime_error(messagePrefix + noTimeStamp);
+}
 
 }}

src/pvaClientMonitor.cpp

@@ -17,6 +17,8 @@
 
 #include <pv/pvaClient.h>
 
+using std::tr1::static_pointer_cast;
+using std::tr1::dynamic_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -57,72 +59,42 @@ public:
     {
         PvaClientMonitorPtr clientMonitor(pvaClientMonitor.lock());
         if(!clientMonitor) return;
-        clientMonitor->monitorConnect(status,monitor,structure);
+        clientMonitor->monitorConnect(status,monitor,structure);  
     }
 
     virtual void unlisten(epics::pvData::MonitorPtr const & monitor)
     {
         PvaClientMonitorPtr clientMonitor(pvaClientMonitor.lock());
         if(!clientMonitor) return;
-        clientMonitor->unlisten(monitor);
+        clientMonitor->unlisten(monitor);  
     }
 
     virtual void monitorEvent(epics::pvData::MonitorPtr const & monitor)
     {
         PvaClientMonitorPtr clientMonitor(pvaClientMonitor.lock());
         if(!clientMonitor) return;
-        clientMonitor->monitorEvent(monitor);
+        clientMonitor->monitorEvent(monitor);  
     }
 };
 
 
 PvaClientMonitorPtr PvaClientMonitor::create(
         PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
+        Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
 {
-    PvaClientMonitorPtr clientMonitor(new PvaClientMonitor(pvaClient,pvaClientChannel,pvRequest));
+    PvaClientMonitorPtr epv(new PvaClientMonitor(pvaClient,channel,pvRequest));
-    clientMonitor->monitorRequester = MonitorRequesterImplPtr(
+    epv->monitorRequester = MonitorRequesterImplPtr(
-        new MonitorRequesterImpl(clientMonitor,pvaClient));
+        new MonitorRequesterImpl(epv,pvaClient));
-    return clientMonitor;
+    return epv;
 }
 
-PvaClientMonitorPtr PvaClientMonitor::create(
-        PvaClientPtr const &pvaClient,
-        std::string const & channelName,
-        std::string const & providerName,
-        std::string const & request,
-        PvaClientChannelStateChangeRequesterPtr const & stateChangeRequester,
-        PvaClientMonitorRequesterPtr const & monitorRequester)
-{
-    if(PvaClient::getDebug()) {
-         cout<< "PvaClientMonitor::create(pvaClient,channelName,providerName,request,stateChangeRequester,monitorRequester)\n"
-             << " channelName " <<  channelName
-             << " providerName " <<  providerName
-             << " request " << request
-             << endl;
-    }
-    CreateRequest::shared_pointer createRequest(CreateRequest::create());
-    PVStructurePtr pvRequest(createRequest->createRequest(request));
-    if(!pvRequest) throw std::runtime_error(createRequest->getMessage());
-    PvaClientChannelPtr pvaClientChannel = pvaClient->createChannel(channelName,providerName);
-    PvaClientMonitorPtr clientMonitor(new PvaClientMonitor(pvaClient,pvaClientChannel,pvRequest));
-    clientMonitor->monitorRequester = MonitorRequesterImplPtr(
-        new MonitorRequesterImpl(clientMonitor,pvaClient));
-    if(stateChangeRequester) clientMonitor->pvaClientChannelStateChangeRequester = stateChangeRequester;
-    if(monitorRequester) clientMonitor->pvaClientMonitorRequester = monitorRequester;
-    pvaClientChannel->setStateChangeRequester(clientMonitor);
-    pvaClientChannel->issueConnect();
-    return clientMonitor;
-}
-
-
 PvaClientMonitor::PvaClientMonitor(
         PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
+        Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
 : pvaClient(pvaClient),
-  pvaClientChannel(pvaClientChannel),
+  channel(channel),
   pvRequest(pvRequest),
   isStarted(false),
   connectState(connectIdle),
@@ -130,73 +102,42 @@ PvaClientMonitor::PvaClientMonitor(
   userWait(false)
 {
     if(PvaClient::getDebug()) {
-         cout<< "PvaClientMonitor::PvaClientMonitor\n"
+         cout<< "PvaClientMonitor::PvaClientMonitor()"
-             << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+             << " channelName " << channel->getChannelName() 
              << endl;
     }
 }
 
 PvaClientMonitor::~PvaClientMonitor()
 {
+    if(PvaClient::getDebug()) cout<< "PvaClientMonitor::~PvaClientMonitor\n";
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout<< "PvaClientMonitor::~PvaClientMonitor"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << endl;
     }
     if(monitor) {
        if(isStarted) monitor->stop();
+       monitor->destroy();
     }
 }
 
-void PvaClientMonitor::channelStateChange(PvaClientChannelPtr const & channel, bool isConnected)
-{
-    if(PvaClient::getDebug()) {
-           cout<< "PvaClientMonitor::channelStateChange"
-               << " channelName " << channel->getChannelName()
-               << " isConnected " << (isConnected ? "true" : "false")
-               << endl;
-    }
-    if(isConnected&&!monitor)
-    {
-        connectState = connectActive;
-        monitor = pvaClientChannel->getChannel()->createMonitor(monitorRequester,pvRequest);
-    }
-    PvaClientChannelStateChangeRequesterPtr req(pvaClientChannelStateChangeRequester.lock());
-    if(req) {
-          req->channelStateChange(channel,isConnected);
-    }
-}
-
-void PvaClientMonitor::event(PvaClientMonitorPtr const & monitor)
-{
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientMonitor::event"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
-    PvaClientMonitorRequesterPtr req(pvaClientMonitorRequester.lock());
-    if(req) req->event(monitor);
-}
-
 void PvaClientMonitor::checkMonitorState()
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientMonitor::checkMonitorState"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << " connectState " << connectState
            << endl;
     }
-    if(connectState==connectIdle) {
+    if(connectState==connectIdle) connect();
-         connect();
+    if(connectState==connected && !isStarted) start();
-         if(!isStarted) start();
-         return;
-    }
-    if(connectState==connectActive){
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " "
-            + monitorConnectStatus.getMessage();
-        throw std::runtime_error(message);
-    }
 }
 
 string PvaClientMonitor::getRequesterName()
@@ -218,65 +159,52 @@ void PvaClientMonitor::monitorConnect(
     Monitor::shared_pointer const & monitor,
     StructureConstPtr const & structure)
 {
+    Channel::shared_pointer chan(channel.lock());
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientMonitor::monitorConnect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    {
+    connectStatus = status;
-        Lock xx(mutex);
-        this->monitor = monitor;
-        if(!status.isOK()) {
-             stringstream ss;
-             ss << pvRequest;
-             string message = string("\nPvaClientMonitor::monitorConnect)")
-               + "\npvRequest\n" + ss.str()
-               + "\nerror\n" + status.getMessage();
-             monitorConnectStatus = Status(Status::STATUSTYPE_ERROR,message);
-             return;
-        }
-    }
-    bool signal = (connectState==connectWait) ? true : false;
-    monitorConnectStatus = status;
     connectState = connected;
+    this->monitor = monitor;
     if(isStarted) {
         if(PvaClient::getDebug()) {
+            string channelName("disconnected");
+            Channel::shared_pointer chan(channel.lock());
+            if(chan) channelName = chan->getChannelName();
             cout << "PvaClientMonitor::monitorConnect"
-               << " channelName " <<  pvaClientChannel->getChannel()->getChannelName()
+               << " channelName " << channelName
                << " is already started "
                << endl;
         }
         return;
     }
-    pvaClientData = PvaClientMonitorData::create(structure);
+    if(status.isOK() && chan) {
-    pvaClientData->setMessagePrefix(pvaClientChannel->getChannel()->getChannelName());
+        pvaClientData = PvaClientMonitorData::create(structure);
-    if(signal) {
+        pvaClientData->setMessagePrefix(chan->getChannelName());
-        if(PvaClient::getDebug()) {
-             cout << "PvaClientMonitor::monitorConnect calling waitForConnect.signal\n";
-        }
-        waitForConnect.signal();
-        if(PvaClient::getDebug()) {
-             cout << "PvaClientMonitor::monitorConnect calling start\n";
-        }
-        start();
-    } else {
-        if(PvaClient::getDebug()) {
-             cout << "PvaClientMonitor::monitorConnect calling start\n";
-        }
-        start();
     }
-    PvaClientMonitorRequesterPtr req(pvaClientMonitorRequester.lock());
+    if(PvaClient::getDebug()) {
-    if(req) req->monitorConnect(status,shared_from_this(),structure);
+         cout << "PvaClientMonitor::monitorConnect calling waitForConnect.signal\n";
+    }
+    waitForConnect.signal();
+    
 }
 
 void PvaClientMonitor::monitorEvent(MonitorPtr const & monitor)
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientMonitor::monitorEvent"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << endl;
-    }
+    }    
     PvaClientMonitorRequesterPtr req = pvaClientMonitorRequester.lock();
     if(req) req->event(shared_from_this());
     if(userWait) waitForEvent.signal();
@@ -290,7 +218,10 @@ void PvaClientMonitor::unlisten(MonitorPtr const & monitor)
         req->unlisten();
         return;
     }
-    cerr << pvaClientChannel->getChannel()->getChannelName() + "pvaClientMonitor::unlisten called but no PvaClientMonitorRequester\n";
+    string channelName("disconnected");
+    Channel::shared_pointer chan(channel.lock());
+    if(chan) channelName = chan->getChannelName();
+    cerr << channelName + "pvaClientMonitor::unlisten called but no PvaClientMonitorRequester\n";
 }
 
 
@@ -300,8 +231,11 @@ void PvaClientMonitor::connect()
     issueConnect();
     Status status = waitConnect();
     if(status.isOK()) return;
-    string message = string("channel ")
+    Channel::shared_pointer chan(channel.lock());
-        + pvaClientChannel->getChannel()->getChannelName()
+    string channelName("disconnected");
+    if(chan) channelName = chan->getChannelName();
+    string message = string("channel ") 
+        + channelName
         + " PvaClientMonitor::connect "
         + status.getMessage();
     throw std::runtime_error(message);
@@ -310,50 +244,59 @@ void PvaClientMonitor::connect()
 void PvaClientMonitor::issueConnect()
 {
     if(PvaClient::getDebug()) cout << "PvaClientMonitor::issueConnect\n";
+    Channel::shared_pointer chan(channel.lock());
     if(connectState!=connectIdle) {
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
         string message = string("channel ")
-            + pvaClientChannel->getChannel()->getChannelName()
+            + channelName 
             + " pvaClientMonitor already connected ";
         throw std::runtime_error(message);
     }
-    connectState = connectWait;
+    if(chan) {
-    monitor = pvaClientChannel->getChannel()->createMonitor(monitorRequester,pvRequest);
+        connectState = connectActive;
+        monitor = chan->createMonitor(monitorRequester,pvRequest);
+        return;
+    }
+    throw std::runtime_error("PvaClientMonitor::issueConnect() but channel disconnected");
 }
 
 Status PvaClientMonitor::waitConnect()
 {
-    if(PvaClient::getDebug()) {
+    if(PvaClient::getDebug()) cout << "PvaClientMonitor::waitConnect\n";
-       cout << "PvaClientMonitor::waitConnect "
+    if(connectState==connected) {
-         << pvaClientChannel->getChannel()->getChannelName()
+         if(!connectStatus.isOK()) connectState = connectIdle;
-         << endl;
+         return connectStatus;
     }
-    {
+    if(connectState!=connectActive) {
-        Lock xx(mutex);
+        Channel::shared_pointer chan(channel.lock());
-        if(connectState==connected) {
+        string channelName("disconnected");
-             if(!monitorConnectStatus.isOK()) connectState = connectIdle;
+        if(chan) channelName = chan->getChannelName();
-             return monitorConnectStatus;
+        string message = string("channel ")
-        }
+            + channelName
-        if(connectState!=connectWait) {
+            + " PvaClientMonitor::waitConnect illegal connect state ";
-            string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+        throw std::runtime_error(message);
-                + " PvaClientMonitor::waitConnect illegal connect state ";
+    }
-            throw std::runtime_error(message);
+    if(PvaClient::getDebug()) {
-        }
+        cout << "PvaClientMonitor::waitConnect calling waitForConnect.wait\n";
     }
     waitForConnect.wait();
-    connectState = monitorConnectStatus.isOK() ? connected : connectIdle;
+    connectState = connectStatus.isOK() ? connected : connectIdle;
     if(PvaClient::getDebug()) {
         cout << "PvaClientMonitor::waitConnect"
-             << " monitorConnectStatus " << (monitorConnectStatus.isOK() ? "connected" : "not connected")
+             << " connectStatus " << (connectStatus.isOK() ? "connected" : "not connected");
-             << endl;
     }
-    return monitorConnectStatus;
+    return connectStatus;
 }
 
 void PvaClientMonitor::setRequester(PvaClientMonitorRequesterPtr const & pvaClientMonitorRequester)
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientMonitor::setRequester"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << endl;
     }
     this->pvaClientMonitorRequester = pvaClientMonitorRequester;
@@ -362,17 +305,30 @@ void PvaClientMonitor::setRequester(PvaClientMonitorRequesterPtr const & pvaClie
 void PvaClientMonitor::start()
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientMonitor::start"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << " connectState " << connectState
            << endl;
     }
     if(isStarted) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
+        cerr << "PvaClientMonitor::start"
+           << " channelName " << channelName
+           << " why is this called twice "
+           << endl;
         return;
     }
     if(connectState==connectIdle) connect();
     if(connectState!=connected) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+        Channel::shared_pointer chan(channel.lock());
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " PvaClientMonitor::start illegal state ";
         throw std::runtime_error(message);
     }
@@ -380,45 +336,15 @@ void PvaClientMonitor::start()
     monitor->start();
 }
 
-void PvaClientMonitor::start(string const & request)
-{
-    if(PvaClient::getDebug()) {
-        cout<< "PvaMonitor::start(request)"
-            << " request " << request
-            << endl;
-    }
-    PvaClientPtr client(pvaClient.lock());
-    if(!client) throw std::runtime_error("pvaClient was deleted");
-    if(!pvaClientChannel->getChannel()->isConnected()) {
-        client->message(
-             "PvaClientMonitor::start(request) but not connected",
-             errorMessage);
-        return;
-    }
-    CreateRequest::shared_pointer createRequest(CreateRequest::create());
-    PVStructurePtr pvr(createRequest->createRequest(request));
-    if(!pvr) throw std::runtime_error(createRequest->getMessage());
-    if(monitor) {
-       if(isStarted) monitor->stop();
-    }
-    monitorRequester.reset();
-    monitor.reset();
-    isStarted = false;
-    connectState = connectIdle;
-    userPoll = false;
-    userWait = false;
-    monitorRequester = MonitorRequesterImplPtr(
-        new MonitorRequesterImpl(shared_from_this(),client));
-    pvRequest = pvr;
-    connect();
-}
-
 
 void PvaClientMonitor::stop()
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientMonitor::stop"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << endl;
     }
     if(!isStarted) return;
@@ -429,11 +355,30 @@ void PvaClientMonitor::stop()
 bool PvaClientMonitor::poll()
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientMonitor::poll"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << endl;
     }
     checkMonitorState();
+    if(!isStarted) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
+            + " PvaClientMonitor::poll illegal state ";
+         throw std::runtime_error(message);
+    }
+    if(userPoll) {
+                string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
+            + " PvaClientMonitor::poll did not release last";
+        throw std::runtime_error(message);
+    }
     monitorElement = monitor->poll();
     if(!monitorElement) return false;
     userPoll = true;
@@ -444,12 +389,18 @@ bool PvaClientMonitor::poll()
 bool PvaClientMonitor::waitEvent(double secondsToWait)
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientMonitor::waitEvent"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << endl;
     }
     if(!isStarted) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+        Channel::shared_pointer chan(channel.lock());
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " PvaClientMonitor::waitEvent illegal state ";
         throw std::runtime_error(message);
     }
@@ -467,12 +418,26 @@ bool PvaClientMonitor::waitEvent(double secondsToWait)
 void PvaClientMonitor::releaseEvent()
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientMonitor::releaseEvent"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << endl;
     }
+    if(!isStarted) {
+        Channel::shared_pointer chan(channel.lock());
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
+            + " PvaClientMonitor::releaseEvent monitor not started ";
+        throw std::runtime_error(message);
+    }
     if(!userPoll) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+        Channel::shared_pointer chan(channel.lock());
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " PvaClientMonitor::releaseEvent did not call poll";
         throw std::runtime_error(message);
     }
@@ -480,16 +445,14 @@ void PvaClientMonitor::releaseEvent()
     monitor->release(monitorElement);
 }
 
-PvaClientChannelPtr PvaClientMonitor::getPvaClientChannel()
-{
-    return pvaClientChannel;
-}
-
 PvaClientMonitorDataPtr PvaClientMonitor::getData()
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientMonitor::getData"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << endl;
     }
     checkMonitorState();

src/pvaClientMonitorData.cpp

@@ -19,6 +19,7 @@
 
 #include <pv/pvaClient.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -52,16 +53,43 @@ PvaClientMonitorDataPtr PvaClientMonitorData::create(StructureConstPtr const & s
 }
 
 PvaClientMonitorData::PvaClientMonitorData(StructureConstPtr const & structure)
-: PvaClientData(structure)
+: structure(structure)
 {
+    messagePrefix = "";
 }
 
 void PvaClientMonitorData::setData(MonitorElementPtr const & monitorElement)
 {
-   PVStructurePtr pvStructure = monitorElement->pvStructurePtr;
+   pvStructure = monitorElement->pvStructurePtr;
-   BitSetPtr changedBitSet = monitorElement->changedBitSet;
+   changedBitSet = monitorElement->changedBitSet;
-   PvaClientData::setData(pvStructure,changedBitSet);
    overrunBitSet = monitorElement->overrunBitSet;
+   pvValue = pvStructure->getSubField("value");
+}
+
+void PvaClientMonitorData::checkValue()
+{
+    if(pvValue) return;
+    throw std::runtime_error(messagePrefix + noValue);
+}
+
+void PvaClientMonitorData::setMessagePrefix(std::string const & value)
+{
+    messagePrefix = value + " ";
+}
+
+StructureConstPtr PvaClientMonitorData::getStructure()
+{return structure;}
+
+PVStructurePtr PvaClientMonitorData::getPVStructure()
+{
+    if(pvStructure) return pvStructure;
+    throw std::runtime_error(messagePrefix + noStructure);
+}
+
+BitSetPtr PvaClientMonitorData::getChangedBitSet()
+{
+    if(!changedBitSet) throw std::runtime_error(messagePrefix + noStructure);
+    return changedBitSet;
 }
 
 BitSetPtr PvaClientMonitorData::getOverrunBitSet()
@@ -70,6 +98,24 @@ BitSetPtr PvaClientMonitorData::getOverrunBitSet()
     return overrunBitSet;
 }
 
+std::ostream & PvaClientMonitorData::showChanged(std::ostream & out)
+{
+    if(!changedBitSet) throw std::runtime_error(messagePrefix + noStructure);
+    size_t nextSet = changedBitSet->nextSetBit(0);
+    PVFieldPtr pvField;
+    while(nextSet!=string::npos) {
+        if(nextSet==0) {
+             pvField = pvStructure;
+        } else {
+              pvField = pvStructure->getSubField(nextSet);
+        }
+        string name = pvField->getFullName();
+        out << name << " = " << pvField << endl;
+        nextSet = changedBitSet->nextSetBit(nextSet+1);
+    }
+    return out;
+}
+
 std::ostream & PvaClientMonitorData::showOverrun(std::ostream & out)
 {
     if(!overrunBitSet) throw std::runtime_error(messagePrefix + noStructure);
@@ -77,9 +123,9 @@ std::ostream & PvaClientMonitorData::showOverrun(std::ostream & out)
     PVFieldPtr pvField;
     while(nextSet!=string::npos) {
         if(nextSet==0) {
-             pvField = getPVStructure();
+             pvField = pvStructure;
         } else {
-              pvField = getPVStructure()->getSubField(nextSet);
+              pvField = pvStructure->getSubField(nextSet);
         }
         string name = pvField->getFullName();
         out << name << " = " << pvField << endl;
@@ -88,4 +134,135 @@ std::ostream & PvaClientMonitorData::showOverrun(std::ostream & out)
     return out;
 }
 
+bool PvaClientMonitorData::hasValue()
+{
+    if(!pvValue) return false;
+    return true;
+}
+
+bool PvaClientMonitorData::isValueScalar()
+{
+    if(!pvValue) return false;
+    if(pvValue->getField()->getType()==scalar) return true;
+    return false;
+}
+
+bool PvaClientMonitorData::isValueScalarArray()
+{
+    if(!pvValue) return false;
+    if(pvValue->getField()->getType()==scalarArray) return true;
+    return false;
+}
+
+PVFieldPtr  PvaClientMonitorData::getValue()
+{
+   checkValue();
+   return pvValue;
+}
+
+PVScalarPtr  PvaClientMonitorData::getScalarValue()
+{
+    checkValue();
+    PVScalarPtr pv = pvStructure->getSubField<PVScalar>("value");
+    if(!pv) {
+        throw std::runtime_error(messagePrefix + noScalar);
+    }
+    return pv;
+}
+
+PVArrayPtr  PvaClientMonitorData::getArrayValue()
+{
+    checkValue();
+    PVArrayPtr pv = pvStructure->getSubField<PVArray>("value");
+    if(!pv) {
+        throw std::runtime_error(messagePrefix + noArray);
+    }
+    return pv;
+}
+
+PVScalarArrayPtr  PvaClientMonitorData::getScalarArrayValue()
+{
+    checkValue();
+    PVScalarArrayPtr pv = pvStructure->getSubField<PVScalarArray>("value");
+    if(!pv) {
+        throw std::runtime_error(messagePrefix + noScalarArray);
+    }
+    return pv;
+}
+
+double PvaClientMonitorData::getDouble()
+{
+    PVScalarPtr pvScalar = getScalarValue();
+    ScalarType scalarType = pvScalar->getScalar()->getScalarType();
+    if(scalarType==pvDouble) {
+        PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
+        return pvDouble->get();
+    }
+    if(!ScalarTypeFunc::isNumeric(scalarType)) {
+        throw std::runtime_error(messagePrefix + notCompatibleScalar);
+    }
+    return convert->toDouble(pvScalar);
+}
+
+string PvaClientMonitorData::getString()
+{
+    PVScalarPtr pvScalar = getScalarValue();
+    return convert->toString(pvScalar);
+}
+
+shared_vector<const double> PvaClientMonitorData::getDoubleArray()
+{
+    checkValue();
+    PVDoubleArrayPtr pv = pvStructure->getSubField<PVDoubleArray>("value");
+    if(!pv) {
+        throw std::runtime_error(messagePrefix + notDoubleArray);
+    }
+    return pv->view();   
+}
+
+shared_vector<const string> PvaClientMonitorData::getStringArray()
+{
+    checkValue();
+    PVStringArrayPtr pv = pvStructure->getSubField<PVStringArray>("value");
+    if(!pv) {
+        throw std::runtime_error(messagePrefix + notStringArray);
+    }
+    return pv->view();   
+
+}
+
+Alarm PvaClientMonitorData::getAlarm()
+{
+   if(!pvStructure) {
+        throw std::runtime_error(messagePrefix + noAlarm);
+   }
+   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("alarm");
+   if(!pvs) throw std::runtime_error(messagePrefix + noAlarm);
+   pvAlarm.attach(pvs);
+   if(pvAlarm.isAttached()) {
+       Alarm alarm;
+       pvAlarm.get(alarm);
+       pvAlarm.detach();
+       return alarm;
+   }
+   throw std::runtime_error(messagePrefix + noAlarm);
+}
+
+TimeStamp PvaClientMonitorData::getTimeStamp()
+{
+   if(!pvStructure) {
+        throw std::runtime_error(messagePrefix + noTimeStamp);
+   }
+   PVStructurePtr pvs = pvStructure->getSubField<PVStructure>("timeStamp");
+   if(!pvs) throw std::runtime_error(messagePrefix + noTimeStamp);
+   pvTimeStamp.attach(pvs);
+   if(pvTimeStamp.isAttached()) {
+       TimeStamp timeStamp;
+       pvTimeStamp.get(timeStamp);
+       pvTimeStamp.detach();
+       return timeStamp;
+   }
+   throw std::runtime_error(messagePrefix + noTimeStamp);
+}
+
 }}

src/pvaClientMultiChannel.cpp

@@ -17,6 +17,9 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
+
+
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -80,7 +83,7 @@ Status PvaClientMultiChannel::connect(double timeout)
     Status status = Status::Ok;
     size_t numBad = 0;
     for(size_t i=0; i< numChannel; ++i) {
-        if(numBad==0) {
+	if(numBad==0) {
             status = pvaClientChannelArray[i]->waitConnect(timeout);
         } else {
             status = pvaClientChannelArray[i]->waitConnect(.001);
@@ -140,7 +143,7 @@ PvaClientPtr PvaClientMultiChannel::getPvaClient()
     return pvaClient;
 }
 
-
+ 
 
 PvaClientMultiGetDoublePtr PvaClientMultiChannel::createGet()
 {

src/pvaClientMultiGetDouble.cpp

@@ -16,12 +16,13 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;
 using namespace std;
 
-namespace epics { namespace pvaClient {
+namespace epics { namespace pvaClient { 
 
 
 PvaClientMultiGetDoublePtr PvaClientMultiGetDouble::create(
@@ -79,7 +80,7 @@ epics::pvData::shared_vector<double> PvaClientMultiGetDouble::get()
 {
     if(!isGetConnected) connect();
     shared_vector<epics::pvData::boolean> isConnected = pvaClientMultiChannel->getIsConnected();
-
+    
     for(size_t i=0; i<nchannel; ++i)
     {
          if(isConnected[i]) {
@@ -96,7 +97,7 @@ epics::pvData::shared_vector<double> PvaClientMultiGetDouble::get()
                throw std::runtime_error(message);
          }
     }
-
+    
     for(size_t i=0; i<nchannel; ++i)
     {
         if(isConnected[i])

src/pvaClientMultiMonitorDouble.cpp

@@ -16,12 +16,13 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;
 using namespace std;
 
-namespace epics { namespace pvaClient {
+namespace epics { namespace pvaClient { 
 
 
 PvaClientMultiMonitorDoublePtr PvaClientMultiMonitorDouble::create(

src/pvaClientMultiPutDouble.cpp

@@ -16,12 +16,13 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;
 using namespace std;
 
-namespace epics { namespace pvaClient {
+namespace epics { namespace pvaClient { 
 
 
 PvaClientMultiPutDoublePtr PvaClientMultiPutDouble::create(

src/pvaClientNTMultiData.cpp

@@ -15,12 +15,13 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;
 using namespace std;
 
-namespace epics { namespace pvaClient {
+namespace epics { namespace pvaClient { 
 
 PvaClientNTMultiDataPtr PvaClientNTMultiData::create(
     epics::pvData::UnionConstPtr const & u,
@@ -44,6 +45,10 @@ PvaClientNTMultiData::PvaClientNTMultiData(
   gotTimeStamp(false)
 {
     if(PvaClient::getDebug()) cout<< "PvaClientNTMultiData::PvaClientNTMultiData()\n";
+    PVFieldPtr pvValue = pvRequest->getSubField("field.value");
+    if(!pvValue) {
+        throw std::runtime_error("pvRequest did not specify value");
+    }
     topPVStructure.resize(nchannel);
     unionValue.resize(nchannel);
     PVDataCreatePtr pvDataCreate = getPVDataCreate();
@@ -63,7 +68,7 @@ PvaClientNTMultiData::PvaClientNTMultiData(
          severity.resize(nchannel);
          status.resize(nchannel);
          message.resize(nchannel);
-
+         
     }
     if(pvRequest->getSubField("field.timeStamp")) {
         gotTimeStamp = true;
@@ -84,6 +89,18 @@ PvaClientNTMultiData::~PvaClientNTMultiData()
     if(PvaClient::getDebug()) cout<< "PvaClientNTMultiData::~PvaClientNTMultiData()\n";
 }
 
+
+void PvaClientNTMultiData::setStructure(StructureConstPtr const & structure,size_t index)
+{
+    FieldConstPtr field = structure->getField("value");
+    if(!field) {
+        string message = "channel "
+           + pvaClientChannelArray[index]->getChannel()->getChannelName()
+           + " does not have top level value field";
+        throw std::runtime_error(message);
+    }
+}
+
 void PvaClientNTMultiData::setPVStructure(
         PVStructurePtr const &pvStructure,size_t index)
 {
@@ -121,51 +138,28 @@ void PvaClientNTMultiData::startDeltaTime()
 }
 
 
-void PvaClientNTMultiData::endDeltaTime(bool valueOnly)
+void PvaClientNTMultiData::endDeltaTime()
 {
     for(size_t i=0; i<nchannel; ++i)
     {
         PVStructurePtr pvst = topPVStructure[i];
         if(!pvst) {
             unionValue[i] = PVUnionPtr();
-        } else if(unionValue[i]) {
+        } else {
-            if(valueOnly) {
+            unionValue[i]->set(pvst->getSubField("value"));
-                PVFieldPtr pvValue = pvst->getSubField("value");
-                if(pvValue) {
-                    unionValue[i]->set(pvst->getSubField("value"));
-                } else {
-                    unionValue[i] = PVUnionPtr();
-                }
-            } else {
-                unionValue[i]->set(pvst);
-            }
             if(gotAlarm)
             {
-                PVIntPtr pvSeverity = pvst->getSubField<PVInt>("alarm.severity");
+                severity[i] = pvst->getSubField<PVInt>("alarm.severity")->get();
-                PVIntPtr pvStatus = pvst->getSubField<PVInt>("alarm.status");
+                status[i] = pvst->getSubField<PVInt>("alarm.status")->get();
-                PVStringPtr pvMessage = pvst->getSubField<PVString>("alarm.message");
+                message[i] = pvst->getSubField<PVString>("alarm.message")->get();
-                if(pvSeverity&&pvStatus&&pvMessage) {
-                    severity[i] = pvSeverity->get();
-                    status[i] = pvStatus->get();
-                    message[i] = pvMessage->get();
-                } else {
-                    severity[i] = undefinedAlarm;
-                    status[i] = undefinedStatus;
-                    message[i] = "no alarm field";
-                }
             }
             if(gotTimeStamp)
             {
-                PVLongPtr pvEpoch = pvst->getSubField<PVLong>("timeStamp.secondsPastEpoch");
+                secondsPastEpoch[i] = pvst->getSubField<PVLong>("timeStamp.secondsPastEpoch")->get();
-                PVIntPtr pvNano = pvst->getSubField<PVInt>("timeStamp.nanoseconds");
+                nanoseconds[i] = pvst->getSubField<PVInt>("timeStamp.nanoseconds")->get();
-                PVIntPtr pvTag = pvst->getSubField<PVInt>("timeStamp.userTag");
+                userTag[i] = pvst->getSubField<PVInt>("timeStamp.userTag")->get();
-                if(pvEpoch&&pvNano&&pvTag) {
-                    secondsPastEpoch[i] = pvEpoch->get();
-                    nanoseconds[i] = pvNano->get();
-                    userTag[i] = pvTag->get();
-                }
             }
-        }
+        } 
     }
 }
 

src/pvaClientNTMultiGet.cpp

@@ -15,12 +15,13 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;
 using namespace std;
 
-namespace epics { namespace pvaClient {
+namespace epics { namespace pvaClient { 
 
 
 PvaClientNTMultiGetPtr PvaClientNTMultiGet::create(
@@ -63,10 +64,13 @@ void PvaClientNTMultiGet::connect()
 {
     pvaClientGet.resize(nchannel);
     shared_vector<epics::pvData::boolean> isConnected = pvaClientMultiChannel->getIsConnected();
+    string request = "value";
+    if(pvRequest->getSubField("field.alarm")) request += ",alarm";
+    if(pvRequest->getSubField("field.timeStamp")) request += ",timeStamp";
     for(size_t i=0; i<nchannel; ++i)
     {
          if(isConnected[i]) {
-               pvaClientGet[i] = pvaClientChannelArray[i]->createGet(pvRequest);
+               pvaClientGet[i] = pvaClientChannelArray[i]->createGet(request);
                pvaClientGet[i]->issueConnect();
          }
     }
@@ -75,7 +79,7 @@ void PvaClientNTMultiGet::connect()
          if(isConnected[i]) {
                Status status = pvaClientGet[i]->waitConnect();
                if(status.isOK()) continue;
-               string message = string("channel ") +pvaClientChannelArray[i]->getChannelName()
+               string message = string("channel ") +pvaClientChannelArray[i]->getChannelName() 
                     + " PvaChannelGet::waitConnect " + status.getMessage();
                throw std::runtime_error(message);
          }
@@ -83,11 +87,11 @@ void PvaClientNTMultiGet::connect()
     this->isConnected = true;
 }
 
-void PvaClientNTMultiGet::get(bool valueOnly)
+void PvaClientNTMultiGet::get()
 {
     if(!isConnected) connect();
     shared_vector<epics::pvData::boolean> isConnected = pvaClientMultiChannel->getIsConnected();
-
+    
     for(size_t i=0; i<nchannel; ++i)
     {
          if(isConnected[i]) {
@@ -99,7 +103,7 @@ void PvaClientNTMultiGet::get(bool valueOnly)
          if(isConnected[i]) {
                Status status = pvaClientGet[i]->waitGet();
                if(status.isOK()) continue;
-               string message = string("channel ") +pvaClientChannelArray[i]->getChannelName()
+               string message = string("channel ") +pvaClientChannelArray[i]->getChannelName() 
                     + " PvaChannelGet::waitGet " + status.getMessage();
                throw std::runtime_error(message);
          }
@@ -111,7 +115,7 @@ void PvaClientNTMultiGet::get(bool valueOnly)
               pvaClientNTMultiData->setPVStructure(pvaClientGet[i]->getData()->getPVStructure(),i);
          }
     }
-    pvaClientNTMultiData->endDeltaTime(valueOnly);
+    pvaClientNTMultiData->endDeltaTime();
 }
 
 PvaClientNTMultiDataPtr PvaClientNTMultiGet::getData()

src/pvaClientNTMultiMonitor.cpp

@@ -18,12 +18,13 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;
 using namespace std;
 
-namespace epics { namespace pvaClient {
+namespace epics { namespace pvaClient { 
 
 PvaClientNTMultiMonitorPtr PvaClientNTMultiMonitor::create(
     PvaClientMultiChannelPtr const &pvaMultiChannel,
@@ -67,10 +68,13 @@ void PvaClientNTMultiMonitor::connect()
 {
     pvaClientMonitor.resize(nchannel);
     shared_vector<epics::pvData::boolean> isConnected = pvaClientMultiChannel->getIsConnected();
+    string request = "value";
+    if(pvRequest->getSubField("field.alarm")) request += ",alarm";
+    if(pvRequest->getSubField("field.timeStamp")) request += ",timeStamp";
     for(size_t i=0; i<nchannel; ++i)
     {
          if(isConnected[i]) {
-               pvaClientMonitor[i] = pvaClientChannelArray[i]->createMonitor(pvRequest);
+               pvaClientMonitor[i] = pvaClientChannelArray[i]->createMonitor(request);
                pvaClientMonitor[i]->issueConnect();
          }
     }
@@ -79,7 +83,7 @@ void PvaClientNTMultiMonitor::connect()
          if(isConnected[i]) {
                Status status = pvaClientMonitor[i]->waitConnect();
                if(status.isOK()) continue;
-               string message = string("channel ") +pvaClientChannelArray[i]->getChannelName()
+               string message = string("channel ") +pvaClientChannelArray[i]->getChannelName() 
                     + " PvaChannelMonitor::waitConnect " + status.getMessage();
                throw std::runtime_error(message);
          }
@@ -91,7 +95,7 @@ void PvaClientNTMultiMonitor::connect()
     this->isConnected = true;
 }
 
-bool PvaClientNTMultiMonitor::poll(bool valueOnly)
+bool PvaClientNTMultiMonitor::poll()
 {
     if(!isConnected) connect();
     bool result = false;
@@ -108,7 +112,7 @@ bool PvaClientNTMultiMonitor::poll(bool valueOnly)
               }
          }
     }
-    if(result) pvaClientNTMultiData->endDeltaTime(valueOnly);
+    if(result) pvaClientNTMultiData->endDeltaTime();
     return result;
 }
 

src/pvaClientNTMultiPut.cpp

@@ -17,12 +17,13 @@
 
 #include <pv/pvaClientMultiChannel.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace epics::nt;
 using namespace std;
 
-namespace epics { namespace pvaClient {
+namespace epics { namespace pvaClient { 
 
 PvaClientNTMultiPutPtr PvaClientNTMultiPut::create(
     PvaClientMultiChannelPtr const &pvaMultiChannel,
@@ -67,7 +68,7 @@ void PvaClientNTMultiPut::connect()
          if(isConnected[i]) {
                Status status = pvaClientPut[i]->waitConnect();
                if(status.isOK()) continue;
-               string message = string("channel ") +pvaClientChannelArray[i]->getChannelName()
+               string message = string("channel ") +pvaClientChannelArray[i]->getChannelName() 
                     + " PvaChannelPut::waitConnect " + status.getMessage();
                throw std::runtime_error(message);
          }
@@ -83,7 +84,7 @@ void PvaClientNTMultiPut::connect()
          if(isConnected[i]) {
                Status status = pvaClientPut[i]->waitGet();
                if(status.isOK()) continue;
-               string message = string("channel ") +pvaClientChannelArray[i]->getChannelName()
+               string message = string("channel ") +pvaClientChannelArray[i]->getChannelName() 
                     + " PvaChannelPut::waitGet " + status.getMessage();
                throw std::runtime_error(message);
          }
@@ -121,9 +122,9 @@ void PvaClientNTMultiPut::put()
          if(isConnected[i]) {
               Status status = pvaClientPut[i]->waitPut();
               if(status.isOK())  continue;
-              string message = string("channel ") +pvaClientChannelArray[i]->getChannelName()
+              string message = string("channel ") +pvaClientChannelArray[i]->getChannelName() 
                     + " PvaChannelPut::waitPut " + status.getMessage();
-              throw std::runtime_error(message);
+              throw std::runtime_error(message); 
          }
     }
 }

src/pvaClientProcess.cpp

@@ -15,6 +15,7 @@
 
 #include <pv/pvaClient.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -54,7 +55,7 @@ public:
     {
         PvaClientProcessPtr clientProcess(pvaClientProcess.lock());
         if(!clientProcess) return;
-        clientProcess->channelProcessConnect(status,channelProcess);
+        clientProcess->channelProcessConnect(status,channelProcess);  
     }
 
     virtual void processDone(
@@ -69,46 +70,33 @@ public:
 
 PvaClientProcessPtr PvaClientProcess::create(
         PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
+        Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
 {
-    if(PvaClient::getDebug()) {
+    PvaClientProcessPtr epv(new PvaClientProcess(pvaClient,channel,pvRequest));
-         cout<< "PvaClientProcess::create(pvaClient,channelName,pvRequest)\n"
+    epv->channelProcessRequester = ChannelProcessRequesterImplPtr(
-             << " channelName " <<  pvaClientChannel->getChannel()->getChannelName()
+        new ChannelProcessRequesterImpl(epv,pvaClient));
-             << " pvRequest " << pvRequest
+    return epv;
-             << endl;
-    }
-    PvaClientProcessPtr channelProcess(new PvaClientProcess(pvaClient,pvaClientChannel,pvRequest));
-    channelProcess->channelProcessRequester = ChannelProcessRequesterImplPtr(
-        new ChannelProcessRequesterImpl(channelProcess,pvaClient));
-    return channelProcess;
 }
 
 
 PvaClientProcess::PvaClientProcess(
         PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
+        Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
 : pvaClient(pvaClient),
-  pvaClientChannel(pvaClientChannel),
+  channel(channel),
   pvRequest(pvRequest),
   connectState(connectIdle),
   processState(processIdle)
 {
-    if(PvaClient::getDebug()) {
+    if(PvaClient::getDebug()) cout<< "PvaClientProcess::PvaClientProcess()\n";
-        cout<< "PvaClientProcess::PvaClientProcess()"
-            << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-            << endl;
-    }
 }
 
 PvaClientProcess::~PvaClientProcess()
 {
-    if(PvaClient::getDebug()) {
+    if(PvaClient::getDebug()) cout<< "PvaClientProcess::~PvaClientProcess()\n";
-        cout<< "PvaClientProcess::~PvaClientProcess()"
+    channelProcess->destroy();
-            << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-            << endl;
-    }
 }
 
 // from ChannelProcessRequester
@@ -130,103 +118,51 @@ void PvaClientProcess::channelProcessConnect(
     const Status& status,
     ChannelProcess::shared_pointer const & channelProcess)
 {
-    if(PvaClient::getDebug()) {
+    channelProcessConnectStatus = status;
-        cout << "PvaClientProcess::channelProcessConnect"
+    connectState = connected;
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+    this->channelProcess = channelProcess;
-           << " status.isOK " << (status.isOK() ? "true" : "false")
-           << endl;
-    }
-    {
-        Lock xx(mutex);
-        this->channelProcess = channelProcess;
-        if(status.isOK()) {
-            channelProcessConnectStatus = status;
-            connectState = connected;
-        } else {
-             stringstream ss;
-             ss << pvRequest;
-             string message = string("PvaClientProcess::channelProcessConnect")
-               + "\npvRequest\n" + ss.str()
-               + "\nerror\n" + status.getMessage();
-             channelProcessConnectStatus = Status(Status::STATUSTYPE_ERROR,message);
-        }
-    }
-    PvaClientProcessRequesterPtr  req(pvaClientProcessRequester.lock());
-    if(req) {
-          req->channelProcessConnect(status,shared_from_this());
-    }
     waitForConnect.signal();
-
+    
 }
 
 void PvaClientProcess::processDone(
     const Status& status,
     ChannelProcess::shared_pointer const & channelProcess)
 {
-    if(PvaClient::getDebug()) {
+    channelProcessStatus = status;
-        cout << "PvaClientProcess::processDone"
+    processState = processComplete;
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << " status.isOK " << (status.isOK() ? "true" : "false")
-           << endl;
-    }
-    {
-        Lock xx(mutex);
-        channelProcessStatus = status;
-        processState = processComplete;
-    }
-
-    PvaClientProcessRequesterPtr  req(pvaClientProcessRequester.lock());
-    if(req) {
-          req->processDone(status,shared_from_this());
-    }
     waitForProcess.signal();
 }
 
 void PvaClientProcess::connect()
 {
-     if(PvaClient::getDebug()) {
-        cout << "PvaClientProcess::connect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     issueConnect();
     Status status = waitConnect();
     if(status.isOK()) return;
-    string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+    string message = string("channel ") + channel->getChannelName()
         + " PvaClientProcess::connect " + status.getMessage();
     throw std::runtime_error(message);
 }
 
 void PvaClientProcess::issueConnect()
 {
-     if(PvaClient::getDebug()) {
-        cout << "PvaClientProcess::issueConnect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState!=connectIdle) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+        string message = string("channel ") + channel->getChannelName()
             + " pvaClientProcess already connected ";
         throw std::runtime_error(message);
     }
     connectState = connectActive;
-    channelProcessConnectStatus = Status(Status::STATUSTYPE_ERROR, "connect active");
+    channelProcess = channel->createChannelProcess(channelProcessRequester,pvRequest);
-    channelProcess = pvaClientChannel->getChannel()->createChannelProcess(channelProcessRequester,pvRequest);
 }
 
 Status PvaClientProcess::waitConnect()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientProcess::waitConnect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState==connected) {
          if(!channelProcessConnectStatus.isOK()) connectState = connectIdle;
          return channelProcessConnectStatus;
     }
     if(connectState!=connectActive) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+        string message = string("channel ") + channel->getChannelName()
             + " pvaClientProcess illegal connect state ";
         throw std::runtime_error(message);
     }
@@ -237,29 +173,19 @@ Status PvaClientProcess::waitConnect()
 
 void PvaClientProcess::process()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientProcess::process"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     issueProcess();
     Status status = waitProcess();
     if(status.isOK()) return;
-    string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+    string message = string("channel ") + channel->getChannelName()
         + " PvaClientProcess::process" + status.getMessage();
     throw std::runtime_error(message);
 }
 
 void PvaClientProcess::issueProcess()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientProcess::issueProcess"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState==connectIdle) connect();
-    if(processState==processActive) {
+    if(processState!=processIdle) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+        string message = string("channel ") + channel->getChannelName()
             + " PvaClientProcess::issueProcess process aleady active ";
         throw std::runtime_error(message);
     }
@@ -269,42 +195,18 @@ void PvaClientProcess::issueProcess()
 
 Status PvaClientProcess::waitProcess()
 {
-    if(PvaClient::getDebug()) {
+    if(processState==processComplete) {
-        cout << "PvaClientProcess::waitProcess"
+        processState = processIdle;
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+        return channelProcessStatus;
-           << endl;
     }
-    {
+    if(processState!=processActive){
-        Lock xx(mutex);
+        string message = string("channel ") + channel->getChannelName()
-        if(processState==processComplete) {
+            + " PvaClientProcess::waitProcess llegal process state";
-            processState = processIdle;
+        throw std::runtime_error(message);
-            return channelProcessStatus;
-        }
-        if(processState!=processActive){
-            string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-                 + " PvaClientProcess::waitProcess llegal process state";
-            throw std::runtime_error(message);
-        }
     }
     waitForProcess.wait();
-    processState = processComplete;
+    processState = processIdle;
     return channelProcessStatus;
 }
 
-void PvaClientProcess::setRequester(PvaClientProcessRequesterPtr const & pvaClientProcessRequester)
-{
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientProcess::setRequester"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
-    this->pvaClientProcessRequester = pvaClientProcessRequester;
-}
-
-PvaClientChannelPtr PvaClientProcess::getPvaClientChannel()
-{
-    return pvaClientChannel;
-}
-
-
 }}

src/pvaClientPut.cpp

@@ -15,6 +15,7 @@
 
 #include <pv/pvaClient.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -55,7 +56,7 @@ public:
     {
         PvaClientPutPtr clientPut(pvaClientPut.lock());
         if(!clientPut) return;
-        clientPut->channelPutConnect(status,channelPut,structure);
+        clientPut->channelPutConnect(status,channelPut,structure);  
     }
 
     virtual void getDone(
@@ -69,7 +70,7 @@ public:
         clientPut->getDone(status,channelPut,pvStructure,bitSet);
     }
 
-    virtual void putDone(
+        virtual void putDone(
         const Status& status,
         ChannelPut::shared_pointer const & channelPut)
     {
@@ -81,29 +82,30 @@ public:
 
 PvaClientPutPtr PvaClientPut::create(
         PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
+        Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
 {
-    PvaClientPutPtr clientPut(new PvaClientPut(pvaClient,pvaClientChannel,pvRequest));
+    PvaClientPutPtr epv(new PvaClientPut(pvaClient,channel,pvRequest));
-    clientPut->channelPutRequester = ChannelPutRequesterImplPtr(
+    epv->channelPutRequester = ChannelPutRequesterImplPtr(
-        new ChannelPutRequesterImpl(clientPut,pvaClient));
+        new ChannelPutRequesterImpl(epv,pvaClient));
-    return clientPut;
+    return epv;
 }
 
 
+
 PvaClientPut::PvaClientPut(
         PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
+        Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
 : pvaClient(pvaClient),
-  pvaClientChannel(pvaClientChannel),
+  channel(channel),
   pvRequest(pvRequest),
   connectState(connectIdle),
   putState(putIdle)
 {
     if(PvaClient::getDebug()) {
          cout<< "PvaClientPut::PvaClientPut"
-             << " channelName " <<  pvaClientChannel->getChannel()->getChannelName()
+             << " channelName " << channel->getChannelName() 
              << endl;
     }
 }
@@ -111,28 +113,21 @@ PvaClientPut::PvaClientPut(
 PvaClientPut::~PvaClientPut()
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout<< "PvaClientPut::~PvaClientPut"
-           << " channelName " <<  pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << endl;
     }
+    if(channelPut) channelPut->destroy();
 }
 
-
+void PvaClientPut::checkPutState()
-void PvaClientPut::checkConnectState()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPut::checkConnectState"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState==connectIdle){
           connect();
-    }
+          get();
-    if(connectState==connectActive){
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " "
-            + channelPutConnectStatus.getMessage();
-        throw std::runtime_error(message);
     }
 }
 
@@ -156,34 +151,25 @@ void PvaClientPut::channelPutConnect(
     StructureConstPtr const & structure)
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientPut::channelPutConnect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
     {
         Lock xx(mutex);
+        channelPutConnectStatus = status;
         this->channelPut = channelPut;
         if(status.isOK()) {
-            channelPutConnectStatus = status;
-            connectState = connected;
             pvaClientData = PvaClientPutData::create(structure);
             pvaClientData->setMessagePrefix(channelPut->getChannel()->getChannelName());
-        } else {
-             stringstream ss;
-             ss << pvRequest;
-             string message = string("\nPvaClientPut::channelPutConnect)")
-               + "\npvRequest\n" + ss.str()
-               + "\nerror\n" + status.getMessage();
-             channelPutConnectStatus = Status(Status::STATUSTYPE_ERROR,message);
         }
     }
-    PvaClientPutRequesterPtr  req(pvaClientPutRequester.lock());
-    if(req) {
-          req->channelPutConnect(status,shared_from_this());
-    }
     waitForConnect.signal();
-
+    
 }
 
 void PvaClientPut::getDone(
@@ -193,26 +179,21 @@ void PvaClientPut::getDone(
     BitSetPtr const & bitSet)
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientPut::getDone"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    {
+    channelGetPutStatus = status;
-        Lock xx(mutex);
+    if(status.isOK()) {
-        channelGetPutStatus = status;
+        PVStructurePtr pvs = pvaClientData->getPVStructure();
-        if(status.isOK()) {
+        pvs->copyUnchecked(*pvStructure,*bitSet);
-            PVStructurePtr pvs = pvaClientData->getPVStructure();
+        BitSetPtr bs = pvaClientData->getChangedBitSet();
-            pvs->copyUnchecked(*pvStructure,*bitSet);
+        bs->clear();
-            BitSetPtr bs = pvaClientData->getChangedBitSet();
+        *bs |= *bitSet;
-            bs->clear();
-            *bs |= *bitSet;
-            putState = putComplete;
-        }
-    }
-    PvaClientPutRequesterPtr  req(pvaClientPutRequester.lock());
-    if(req) {
-          req->getDone(status,shared_from_this());
     }
     waitForGetPut.signal();
 }
@@ -222,35 +203,28 @@ void PvaClientPut::putDone(
     ChannelPut::shared_pointer const & channelPut)
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientPut::putDone"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    {
+    channelGetPutStatus = status;
-        Lock xx(mutex);
-        channelGetPutStatus = status;
-        putState = putComplete;
-    }
-    PvaClientPutRequesterPtr  req(pvaClientPutRequester.lock());
-    if(req) {
-          req->putDone(status,shared_from_this());
-    }
     waitForGetPut.signal();
 }
 
 void PvaClientPut::connect()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPut::connect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     issueConnect();
     Status status = waitConnect();
     if(status.isOK()) return;
-    string message = string("channel ")
+    Channel::shared_pointer chan(channel.lock());
-        + pvaClientChannel->getChannel()->getChannelName()
+    string channelName("disconnected");
+    if(chan) channelName = chan->getChannelName();
+    string message = string("channel ") 
+        + channelName
         + " PvaClientPut::connect "
         + status.getMessage();
     throw std::runtime_error(message);
@@ -258,29 +232,24 @@ void PvaClientPut::connect()
 
 void PvaClientPut::issueConnect()
 {
-    if(PvaClient::getDebug()) {
+    Channel::shared_pointer chan(channel.lock());
-        cout << "PvaClientPut::issueConnect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState!=connectIdle) {
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " pvaClientPut already connected ";
         throw std::runtime_error(message);
     }
-    connectState = connectActive;
+    if(chan) {
-    channelPutConnectStatus = Status(Status::STATUSTYPE_ERROR, "connect active");
+        connectState = connectActive;
-    channelPut = pvaClientChannel->getChannel()->createChannelPut(channelPutRequester,pvRequest);
+        channelPut = chan->createChannelPut(channelPutRequester,pvRequest);
-
+        return;
+    }
+    throw std::runtime_error("PvaClientPut::issueConnect() but channel disconnected");
 }
 
 Status PvaClientPut::waitConnect()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPut::waitConnect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     {
         Lock xx(mutex);
         if(connectState==connected) {
@@ -288,7 +257,10 @@ Status PvaClientPut::waitConnect()
              return channelPutConnectStatus;
         }
         if(connectState!=connectActive) {
-            string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
+            Channel::shared_pointer chan(channel.lock());
+            string channelName("disconnected");
+            if(chan) channelName = chan->getChannelName();
+            string message = string("channel ") + channelName
                 + " PvaClientPut::waitConnect illegal connect state ";
             throw std::runtime_error(message);
         }
@@ -300,16 +272,14 @@ Status PvaClientPut::waitConnect()
 
 void PvaClientPut::get()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPut::get"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     issueGet();
     Status status = waitGet();
     if(status.isOK()) return;
-    string message = string("channel ")
+    Channel::shared_pointer chan(channel.lock());
-        +  pvaClientChannel->getChannel()->getChannelName()
+    string channelName("disconnected");
+    if(chan) channelName = chan->getChannelName();
+    string message = string("channel ") 
+        + channelName
         + " PvaClientPut::get "
         + status.getMessage();
     throw std::runtime_error(message);
@@ -317,15 +287,13 @@ void PvaClientPut::get()
 
 void PvaClientPut::issueGet()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPut::issueGet"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState==connectIdle) connect();
-    if(putState==getActive || putState==putActive) {
+    if(putState!=putIdle) {
+        Channel::shared_pointer chan(channel.lock());
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
         string message = string("channel ")
-            + pvaClientChannel->getChannel()->getChannelName()
+            + channelName
             +  "PvaClientPut::issueGet get or put aleady active ";
         throw std::runtime_error(message);
     }
@@ -335,37 +303,30 @@ void PvaClientPut::issueGet()
 
 Status PvaClientPut::waitGet()
 {
-    if(PvaClient::getDebug()) {
+    if(putState!=getActive){
-        cout << "PvaClientPut::waitGet"
+        Channel::shared_pointer chan(channel.lock());
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+        string channelName("disconnected");
-           << endl;
+        if(chan) channelName = chan->getChannelName();
-    }
+        string message = string("channel ")
-    {
+            + channelName
-        Lock xx(mutex);
+            +  " PvaClientPut::waitGet illegal put state";
-        if(putState==putComplete) return channelGetPutStatus;
+        throw std::runtime_error(message);
-        if(putState!=getActive){
-            string message = string("channel ")
-                + pvaClientChannel->getChannel()->getChannelName()
-                +  " PvaClientPut::waitGet illegal put state";
-            throw std::runtime_error(message);
-        }
     }
     waitForGetPut.wait();
+    putState = putIdle;
     return channelGetPutStatus;
 }
 
 void PvaClientPut::put()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPut::put"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     issuePut();
     Status status = waitPut();
     if(status.isOK()) return;
+    Channel::shared_pointer chan(channel.lock());
+    string channelName("disconnected");
+    if(chan) channelName = chan->getChannelName();
     string message = string("channel ")
-        + pvaClientChannel->getChannel()->getChannelName()
+        + channelName
         + " PvaClientPut::put "
         + status.getMessage();
     throw std::runtime_error(message);
@@ -373,18 +334,14 @@ void PvaClientPut::put()
 
 void PvaClientPut::issuePut()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPut::issuePut"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << " pvStructure\n" << pvaClientData->getPVStructure()
-           << " bitSet " << *pvaClientData->getChangedBitSet() << endl
-           << endl;
-    }
     if(connectState==connectIdle) connect();
-    if(putState==getActive || putState==putActive) {
+    if(putState!=putIdle) {
+         Channel::shared_pointer chan(channel.lock());
+         string channelName("disconnected");
+         if(chan) channelName = chan->getChannelName();
          string message = string("channel ")
-            + pvaClientChannel->getChannel()->getChannelName()
+            + channelName
-            +  "PvaClientPut::issuePut get or put aleady active ";
+            +  "PvaClientPut::issueGet get or put aleady active ";
          throw std::runtime_error(message);
     }
     putState = putActive;
@@ -393,51 +350,26 @@ void PvaClientPut::issuePut()
 
 Status PvaClientPut::waitPut()
 {
-    if(PvaClient::getDebug()) {
+    if(putState!=putActive){
-        cout << "PvaClientPut::waitPut"
+         Channel::shared_pointer chan(channel.lock());
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+         string channelName("disconnected");
-           << endl;
+         if(chan) channelName = chan->getChannelName();
-    }
+         string message = string("channel ")
-    {
+            + channelName
-        Lock xx(mutex);
+            +  " PvaClientPut::waitPut illegal put state";
-        if(putState==putComplete) return channelGetPutStatus;
+         throw std::runtime_error(message);
-        if(putState!=putActive){
-            string message = string("channel ")
-                + pvaClientChannel->getChannel()->getChannelName()
-                +  " PvaClientPut::waitPut illegal put state";
-            throw std::runtime_error(message);
-        }
     }
     waitForGetPut.wait();
+    putState = putIdle;
     if(channelGetPutStatus.isOK()) pvaClientData->getChangedBitSet()->clear();
     return channelGetPutStatus;
 }
 
 PvaClientPutDataPtr PvaClientPut::getData()
 {
-    if(PvaClient::getDebug()) {
+    checkPutState();
-           cout<< "PvaClientPut::getData"
-               << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-               << endl;
-    }
-    checkConnectState();
-    if(putState==putIdle) get();
     return pvaClientData;
 }
 
-void PvaClientPut::setRequester(PvaClientPutRequesterPtr const & pvaClientPutRequester)
-{
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPut::setRequester"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
-    this->pvaClientPutRequester = pvaClientPutRequester;
-}
-
-PvaClientChannelPtr PvaClientPut::getPvaClientChannel()
-{
-    return pvaClientChannel;
-}
 
 }}

src/pvaClientPutData.cpp

@@ -25,10 +25,6 @@ using namespace epics::pvAccess;
 using namespace std;
 
 namespace epics { namespace pvaClient {
-static ConvertPtr convert = getConvert();
-static string notCompatibleScalar("value is not a compatible scalar");
-static string notDoubleArray("value is not a doubleArray");
-static string notStringArray("value is not a stringArray");
 
 class PvaClientPostHandlerPvt: public PostHandler
 {
@@ -40,21 +36,28 @@ public:
     void postPut() { putData->postPut(fieldNumber);}
 };
 
+typedef std::tr1::shared_ptr<PVArray> PVArrayPtr;
+static ConvertPtr convert = getConvert();
+static string noValue("no value field");
+static string notScalar("value is not a scalar");
+static string notCompatibleScalar("value is not a compatible scalar");
+static string notArray("value is not an array");
+static string notScalarArray("value is not a scalarArray");
+static string notDoubleArray("value is not a doubleArray");
+static string notStringArray("value is not a stringArray");
 
 PvaClientPutDataPtr PvaClientPutData::create(StructureConstPtr const & structure)
 {
-    if(PvaClient::getDebug()) cout << "PvaClientPutData::create\n";
     PvaClientPutDataPtr epv(new PvaClientPutData(structure));
     return epv;
 }
 
 PvaClientPutData::PvaClientPutData(StructureConstPtr const & structure)
-: PvaClientData(structure)
+: structure(structure),
+  pvStructure(getPVDataCreate()->createPVStructure(structure)),
+  bitSet(BitSetPtr(new BitSet(pvStructure->getNumberFields())))
 {
-    if(PvaClient::getDebug()) cout << "PvaClientPutData::PvaClientPutData\n";
+    messagePrefix = "";
-    PVStructurePtr pvStructure(getPVDataCreate()->createPVStructure(structure));
-    BitSetPtr bitSet(BitSetPtr(new BitSet(pvStructure->getNumberFields())));
-    setData(pvStructure,bitSet);
     size_t nfields = pvStructure->getNumberFields();
     postHandler.resize(nfields);
     PVFieldPtr pvField;
@@ -68,18 +71,145 @@ PvaClientPutData::PvaClientPutData(StructureConstPtr const & structure)
         }
         pvField->setPostHandler(postHandler[i]);
     }
+    pvValue = pvStructure->getSubField("value");
 }
 
+void PvaClientPutData::checkValue()
+{
+    if(pvValue) return;
+    throw std::runtime_error(messagePrefix + noValue);
+}
+
+void PvaClientPutData::postPut(size_t fieldNumber)
+{
+    bitSet->set(fieldNumber);
+}
+
+void PvaClientPutData::setMessagePrefix(std::string const & value)
+{
+    messagePrefix = value + " ";
+}
+
+StructureConstPtr PvaClientPutData::getStructure()
+{return structure;}
+
+PVStructurePtr PvaClientPutData::getPVStructure()
+{return pvStructure;}
+
+BitSetPtr PvaClientPutData::getChangedBitSet()
+{return bitSet;}
+
+std::ostream & PvaClientPutData::showChanged(std::ostream & out)
+{
+    size_t nextSet = bitSet->nextSetBit(0);
+    PVFieldPtr pvField;
+    while(nextSet!=string::npos) {
+        if(nextSet==0) {
+             pvField = pvStructure;
+        } else {
+              pvField = pvStructure->getSubField(nextSet);
+        }
+        string name = pvField->getFullName();
+        out << name << " = " << pvField << endl;
+        nextSet = bitSet->nextSetBit(nextSet+1);
+    }
+    return out;
+}
+
+bool PvaClientPutData::hasValue()
+{
+    if(!pvValue) return false;
+    return true;
+}
+
+bool PvaClientPutData::isValueScalar()
+{
+    if(!pvValue) return false;
+    if(pvValue->getField()->getType()==scalar) return true;
+    return false;
+}
+
+bool PvaClientPutData::isValueScalarArray()
+{
+    if(!pvValue) return false;
+    if(pvValue->getField()->getType()==scalarArray) return true;
+    return false;
+}
+
+PVFieldPtr  PvaClientPutData::getValue()
+{
+   checkValue();
+   return pvValue;
+}
+
+PVScalarPtr  PvaClientPutData::getScalarValue()
+{
+    checkValue();
+    PVScalarPtr pv = pvStructure->getSubField<PVScalar>("value");
+    if(!pv) throw std::runtime_error(messagePrefix + notScalar);
+    return pv;
+}
+
+PVArrayPtr  PvaClientPutData::getArrayValue()
+{
+    checkValue();
+    PVArrayPtr pv = pvStructure->getSubField<PVArray>("value");
+    if(!pv) throw std::runtime_error(messagePrefix + notArray);
+    return pv;
+}
+
+PVScalarArrayPtr  PvaClientPutData::getScalarArrayValue()
+{
+    checkValue();
+    PVScalarArrayPtr pv = pvStructure->getSubField<PVScalarArray>("value");
+    if(!pv) throw std::runtime_error(messagePrefix + notScalarArray);
+    return pv;
+}
+
+double PvaClientPutData::getDouble()
+{
+    PVScalarPtr pvScalar = getScalarValue();
+    ScalarType scalarType = pvScalar->getScalar()->getScalarType();
+    if(scalarType==pvDouble) {
+        PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
+        return pvDouble->get();
+    }
+    if(!ScalarTypeFunc::isNumeric(scalarType)) {
+        throw std::runtime_error(messagePrefix  + notCompatibleScalar);
+    }
+    return convert->toDouble(pvScalar);
+}
+
+string PvaClientPutData::getString()
+{
+    PVScalarPtr pvScalar = getScalarValue();
+    return convert->toString(pvScalar);
+}
+
+shared_vector<const double> PvaClientPutData::getDoubleArray()
+{
+    checkValue();
+    PVDoubleArrayPtr pv = pvStructure->getSubField<PVDoubleArray>("value");
+    if(!pv) {
+        throw std::runtime_error(messagePrefix + notDoubleArray);
+    }
+    return pv->view();   
+}
+
+shared_vector<const string> PvaClientPutData::getStringArray()
+{
+    checkValue();
+    PVStringArrayPtr pv = pvStructure->getSubField<PVStringArray>("value");
+    if(!pv) {
+        throw std::runtime_error(messagePrefix + notStringArray);
+    }
+    return pv->view();   
+
+}
 
 void PvaClientPutData::putDouble(double value)
 {
-    if(PvaClient::getDebug()) cout << "PvaClientPutData::putDouble\n";
+    PVScalarPtr pvScalar = getScalarValue();
-    PVFieldPtr pvField = getSinglePVField();
-    Type type = pvField->getField()->getType();
-    if(type!=scalar) {
-        throw std::logic_error("PvaClientData::putDouble() did not find a scalar field");
-    }
-    PVScalarPtr pvScalar = static_pointer_cast<PVScalar>(pvField);
     ScalarType scalarType = pvScalar->getScalar()->getScalarType();
     if(scalarType==pvDouble) {
         PVDoublePtr pvDouble = static_pointer_cast<PVDouble>(pvScalar);
@@ -87,68 +217,47 @@ void PvaClientPutData::putDouble(double value)
          return;
     }
     if(!ScalarTypeFunc::isNumeric(scalarType)) {
-        throw std::logic_error(
+        throw std::runtime_error(messagePrefix + notCompatibleScalar);
-            "PvaClientData::putDouble() did not find a numeric scalar field");
     }
     convert->fromDouble(pvScalar,value);
 }
 
 void PvaClientPutData::putString(std::string const & value)
 {
-    if(PvaClient::getDebug()) cout << "PvaClientPutData::putString\n";
+    PVScalarPtr pvScalar = getScalarValue();
-    PVFieldPtr pvField = getSinglePVField();
-    Type type = pvField->getField()->getType();
-    if(type!=scalar) {
-        throw std::logic_error("PvaClientData::putString() did not find a scalar field");
-    }
-    PVScalarPtr pvScalar = static_pointer_cast<PVScalar>(pvField);
     convert->fromString(pvScalar,value);
 }
 
+
+
 void PvaClientPutData::putDoubleArray(shared_vector<const double> const & value)
 {
-    if(PvaClient::getDebug()) cout << "PvaClientPutData::putDoubleArray\n";
+    checkValue();
-    PVFieldPtr pvField = getSinglePVField();
+    PVDoubleArrayPtr pv = pvStructure->getSubField<PVDoubleArray>("value");
-    Type type = pvField->getField()->getType();
+    if(!pv) {
-    if(type!=scalarArray) {
+        throw std::runtime_error(messagePrefix + notDoubleArray);
-        throw std::logic_error("PvaClientData::putDoubleArray() did not find a scalarArray field");
     }
-    PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
+    pv->replace(value);
-    ScalarType scalarType = pvScalarArray->getScalarArray()->getElementType();
-    if(!ScalarTypeFunc::isNumeric(scalarType)) {
-        throw std::logic_error(
-            "PvaClientData::putDoubleArray() did not find a numeric scalarArray field");
-    }
-    pvScalarArray->putFrom<const double>(value);
 }
 
 void PvaClientPutData::putStringArray(shared_vector<const std::string> const & value)
 {
-    if(PvaClient::getDebug()) cout << "PvaClientPutData::putStringArray\n";
+    checkValue();
-    PVFieldPtr pvField = getSinglePVField();
+    PVStringArrayPtr pv = pvStructure->getSubField<PVStringArray>("value");
-    Type type = pvField->getField()->getType();
+    if(!pv) {
-    if(type!=scalarArray) {
+        throw std::runtime_error(messagePrefix + notStringArray);
-        throw std::logic_error("PvaClientData::putStringArray() did not find a scalarArray field");
     }
-    PVScalarArrayPtr pvScalarArray = static_pointer_cast<PVScalarArray>(pvField);
+    pv->replace(value);
-    pvScalarArray->putFrom<const string>(value);
-    return;
 }
 
-void PvaClientPutData::putStringArray(std::vector<string> const & value)
+void PvaClientPutData::putStringArray(std::vector<std::string> const & value)
 {
-    size_t length = value.size();
+    checkValue();
-    shared_vector<string> val(length);
+    PVScalarArrayPtr pv = pvStructure->getSubField<PVScalarArray>("value");
-    for(size_t i=0; i < length; ++i) val[i] = value[i];
+    if(!pv) {
-    putStringArray(freeze(val));
+        throw std::runtime_error(messagePrefix + notScalarArray);
-    return;
+    }
+    convert->fromStringArray(pv,0,value.size(),value,0);
 }
 
-void PvaClientPutData::postPut(size_t fieldNumber)
-{
-    if(PvaClient::getDebug()) cout << "PvaClientPutData::postPut\n";
-    getChangedBitSet()->set(fieldNumber);
-}
-
-
 }}

src/pvaClientPutGet.cpp

@@ -14,6 +14,7 @@
 
 #include <pv/pvaClient.h>
 
+using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -55,7 +56,7 @@ public:
     {
         PvaClientPutGetPtr clientPutGet(pvaClientPutGet.lock());
         if(!clientPutGet) return;
-        clientPutGet->channelPutGetConnect(status,channelPutGet,putStructure,getStructure);
+        clientPutGet->channelPutGetConnect(status,channelPutGet,putStructure,getStructure);  
     }
 
     virtual void putGetDone(
@@ -95,28 +96,28 @@ public:
 
 PvaClientPutGetPtr PvaClientPutGet::create(
         PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
+        Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
 {
-    PvaClientPutGetPtr clientPutGet(new PvaClientPutGet(pvaClient,pvaClientChannel,pvRequest));
+    PvaClientPutGetPtr epv(new PvaClientPutGet(pvaClient,channel,pvRequest));
-    clientPutGet->channelPutGetRequester = ChannelPutGetRequesterImplPtr(
+    epv->channelPutGetRequester = ChannelPutGetRequesterImplPtr(
-        new ChannelPutGetRequesterImpl(clientPutGet,pvaClient));
+        new ChannelPutGetRequesterImpl(epv,pvaClient));
-    return clientPutGet;
+    return epv;
 }
 
 PvaClientPutGet::PvaClientPutGet(
         PvaClientPtr const &pvaClient,
-        PvaClientChannelPtr const & pvaClientChannel,
+        Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
 : pvaClient(pvaClient),
-  pvaClientChannel(pvaClientChannel),
+  channel(channel),
   pvRequest(pvRequest),
   connectState(connectIdle),
   putGetState(putGetIdle)
 {
     if(PvaClient::getDebug()) {
          cout<< "PvaClientPutGet::PvaClientPutGet"
-             << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+             << " channelName " << channel->getChannelName() 
              << endl;
     }
 }
@@ -124,27 +125,21 @@ PvaClientPutGet::PvaClientPutGet(
 PvaClientPutGet::~PvaClientPutGet()
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout<< "PvaClientPutGet::~PvaClientPutGet"
-           << " channelName " <<  pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << endl;
     }
+    channelPutGet->destroy();
 }
 
 void PvaClientPutGet::checkPutGetState()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::checkPutGetState"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState==connectIdle){
-          connect();
+        connect();
-    }
+        getPut();
-    if(connectState==connectActive){
-        string message = string("channel ") + pvaClientChannel->getChannel()->getChannelName()
-            + " "
-            + channelPutGetConnectStatus.getMessage();
-        throw std::runtime_error(message);
     }
 }
 
@@ -170,36 +165,20 @@ void PvaClientPutGet::channelPutGetConnect(
 {
     if(PvaClient::getDebug()) {
         cout << "PvaClientPutGet::channelPutGetConnect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelPutGet->getChannel()->getChannelName()
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    {
+    channelPutGetConnectStatus = status;
-        Lock xx(mutex);
+    this->channelPutGet = channelPutGet;
-        this->channelPutGet = channelPutGet;
+    if(status.isOK()) {
-        if(status.isOK()) {
+        pvaClientPutData = PvaClientPutData::create(putStructure);
-            channelPutGetConnectStatus = status;
+        pvaClientPutData->setMessagePrefix(channelPutGet->getChannel()->getChannelName());
-            connectState = connected;
+        pvaClientGetData = PvaClientGetData::create(getStructure);
-            pvaClientPutData = PvaClientPutData::create(putStructure);
+        pvaClientGetData->setMessagePrefix(channelPutGet->getChannel()->getChannelName());
-            pvaClientPutData->setMessagePrefix(channelPutGet->getChannel()->getChannelName());
-            pvaClientGetData = PvaClientGetData::create(getStructure);
-            pvaClientGetData->setMessagePrefix(channelPutGet->getChannel()->getChannelName());
-
-        } else {
-             stringstream ss;
-             ss << pvRequest;
-             string message = string("\nPvaClientPutGet::channelPutGetConnect)")
-               + "\npvRequest\n" + ss.str()
-               + "\nerror\n" + status.getMessage();
-             channelPutGetConnectStatus = Status(Status::STATUSTYPE_ERROR,message);
-        }
-    }
-    PvaClientPutGetRequesterPtr  req(pvaClientPutGetRequester.lock());
-    if(req) {
-          req->channelPutGetConnect(status,shared_from_this());
     }
     waitForConnect.signal();
-
+    
 }
 
 void PvaClientPutGet::putGetDone(
@@ -209,22 +188,17 @@ void PvaClientPutGet::putGetDone(
         BitSetPtr const & getChangedBitSet)
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientPutGet::putGetDone"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    {
+    channelPutGetStatus = status;
-        Lock xx(mutex);
+    if(status.isOK()) {
-        channelPutGetStatus = status;
+        pvaClientGetData->setData(getPVStructure,getChangedBitSet);
-        putGetState = putGetComplete;
-        if(status.isOK()) {
-            pvaClientGetData->setData(getPVStructure,getChangedBitSet);
-        }
-    }
-    PvaClientPutGetRequesterPtr  req(pvaClientPutGetRequester.lock());
-    if(req) {
-          req->putGetDone(status,shared_from_this());
     }
     waitForPutGet.signal();
 }
@@ -236,26 +210,21 @@ void PvaClientPutGet::getPutDone(
     BitSetPtr const & putBitSet)
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientPutGet::getPutDone"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    {
+    channelPutGetStatus = status;
-        Lock xx(mutex);
+    if(status.isOK()) {
-        channelPutGetStatus = status;
+        PVStructurePtr pvs = pvaClientPutData->getPVStructure();
-        putGetState = putGetComplete;
+        pvs->copyUnchecked(*putPVStructure,*putBitSet);
-        if(status.isOK()) {
+        BitSetPtr bs = pvaClientPutData->getChangedBitSet();
-            PVStructurePtr pvs = pvaClientPutData->getPVStructure();
+        bs->clear();
-            pvs->copyUnchecked(*putPVStructure,*putBitSet);
+        *bs |= *putBitSet;
-            BitSetPtr bs = pvaClientPutData->getChangedBitSet();
-            bs->clear();
-            *bs |= *putBitSet;
-        }
-    }
-    PvaClientPutGetRequesterPtr  req(pvaClientPutGetRequester.lock());
-    if(req) {
-          req->getPutDone(status,shared_from_this());
     }
     waitForPutGet.signal();
 }
@@ -267,38 +236,31 @@ void PvaClientPutGet::getGetDone(
         BitSetPtr const & getChangedBitSet)
 {
     if(PvaClient::getDebug()) {
+        string channelName("disconnected");
+        Channel::shared_pointer chan(channel.lock());
+        if(chan) channelName = chan->getChannelName();
         cout << "PvaClientPutGet::getGetDone"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
+           << " channelName " << channelName
            << " status.isOK " << (status.isOK() ? "true" : "false")
            << endl;
     }
-    {
+    channelPutGetStatus = status;
-        Lock xx(mutex);
+    if(status.isOK()) {
-        channelPutGetStatus = status;
+        pvaClientGetData->setData(getPVStructure,getChangedBitSet);
-        putGetState = putGetComplete;
-        if(status.isOK()) {
-            pvaClientGetData->setData(getPVStructure,getChangedBitSet);
-        }
-    }
-    PvaClientPutGetRequesterPtr  req(pvaClientPutGetRequester.lock());
-    if(req) {
-          req->getGetDone(status,shared_from_this());
     }
     waitForPutGet.signal();
 }
 
 void PvaClientPutGet::connect()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::connect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     issueConnect();
     Status status = waitConnect();
     if(status.isOK()) return;
-    string message = string("channel ")
+    Channel::shared_pointer chan(channel.lock());
-        + pvaClientChannel->getChannel()->getChannelName()
+    string channelName("disconnected");
+    if(chan) channelName = chan->getChannelName();
+    string message = string("channel ") 
+        + channelName
         + " PvaClientPutGet::connect "
         + status.getMessage();
     throw std::runtime_error(message);
@@ -306,29 +268,24 @@ void PvaClientPutGet::connect()
 
 void PvaClientPutGet::issueConnect()
 {
-    if(PvaClient::getDebug()) {
+    Channel::shared_pointer chan(channel.lock());
-        cout << "PvaClientPutGet::issueConnect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState!=connectIdle) {
-        string message = string("channel ")
+        string channelName("disconnected");
-            + pvaClientChannel->getChannel()->getChannelName()
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " pvaClientPutGet already connected ";
         throw std::runtime_error(message);
     }
-    connectState = connectActive;
+    if(chan) {
-    channelPutGetConnectStatus = Status(Status::STATUSTYPE_ERROR, "connect active");
+        connectState = connectActive;
-    channelPutGet = pvaClientChannel->getChannel()->createChannelPutGet(channelPutGetRequester,pvRequest);
+        channelPutGet = chan->createChannelPutGet(channelPutGetRequester,pvRequest);
+        return;
+    }
+    throw std::runtime_error("PvaClientPutGet::issueConnect() but channel disconnected");
 }
 
 Status PvaClientPutGet::waitConnect()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::waitConnect"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     {
          Lock xx(mutex);
          if(connectState==connected) {
@@ -336,30 +293,30 @@ Status PvaClientPutGet::waitConnect()
              return channelPutGetConnectStatus;
         }
         if(connectState!=connectActive)  {
-            string message = string("channel ")
+            Channel::shared_pointer chan(channel.lock());
-                + pvaClientChannel->getChannel()->getChannelName()
+            string channelName("disconnected");
+            if(chan) channelName = chan->getChannelName();
+            string message = string("channel ") + channelName
                 + " PvaClientPutGet::waitConnect illegal connect state ";
             throw std::runtime_error(message);
         }
     }
     waitForConnect.wait();
-    if(!channelPutGetConnectStatus.isOK()) connectState = connectIdle;
+    connectState = channelPutGetConnectStatus.isOK() ? connected : connectIdle;
     return channelPutGetConnectStatus;
 }
 
 
 void PvaClientPutGet::putGet()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::putGet"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     issuePutGet();
     Status status = waitPutGet();
     if(status.isOK()) return;
-    string message = string("channel ")
+    Channel::shared_pointer chan(channel.lock());
-        + pvaClientChannel->getChannel()->getChannelName()
+    string channelName("disconnected");
+    if(chan) channelName = chan->getChannelName();
+    string message = string("channel ") 
+        + channelName
         + " PvaClientPut::putGet "
         + status.getMessage();
     throw std::runtime_error(message);
@@ -367,15 +324,12 @@ void PvaClientPutGet::putGet()
 
 void PvaClientPutGet::issuePutGet()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::issuePutGet"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState==connectIdle) connect();
-    if(putGetState==putGetActive) {
+    if(putGetState!=putGetIdle) {
-        string message = string("channel ")
+        Channel::shared_pointer chan(channel.lock());
-            + pvaClientChannel->getChannel()->getChannelName()
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " PvaClientPutGet::issuePutGet get or put aleady active ";
         throw std::runtime_error(message);
     }
@@ -386,35 +340,29 @@ void PvaClientPutGet::issuePutGet()
 
 Status PvaClientPutGet::waitPutGet()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::waitPutGet"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
-    if(putGetState==putGetComplete) return channelPutGetStatus;
     if(putGetState!=putGetActive){
-        string message = string("channel ")
+        Channel::shared_pointer chan(channel.lock());
-            + pvaClientChannel->getChannel()->getChannelName()
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " PvaClientPutGet::waitPutGet get or put aleady active ";
         throw std::runtime_error(message);
     }
     waitForPutGet.wait();
-    if(channelPutGetStatus.isOK()) pvaClientPutData->getChangedBitSet()->clear();
+    putGetState = putGetIdle;
     return channelPutGetStatus;
 }
 
 void PvaClientPutGet::getGet()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::getGet"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     issueGetGet();
     Status status = waitGetGet();
     if(status.isOK()) return;
-    string message = string("channel ")
+    Channel::shared_pointer chan(channel.lock());
-        + pvaClientChannel->getChannel()->getChannelName()
+    string channelName("disconnected");
+    if(chan) channelName = chan->getChannelName();
+    string message = string("channel ") 
+        + channelName
         + " PvaClientPut::getGet "
         + status.getMessage();
     throw std::runtime_error(message);
@@ -422,15 +370,12 @@ void PvaClientPutGet::getGet()
 
 void PvaClientPutGet::issueGetGet()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::issueGetGet"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState==connectIdle) connect();
-    if(putGetState==putGetActive) {
+    if(putGetState!=putGetIdle) {
-        string message = string("channel ")
+        Channel::shared_pointer chan(channel.lock());
-            + pvaClientChannel->getChannel()->getChannelName()
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " PvaClientPutGet::issueGetGet get or put aleady active ";
         throw std::runtime_error(message);
     }
@@ -440,34 +385,29 @@ void PvaClientPutGet::issueGetGet()
 
 Status PvaClientPutGet::waitGetGet()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::waitGetGet"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
-    if(putGetState==putGetComplete) return channelPutGetStatus;
     if(putGetState!=putGetActive){
-        string message = string("channel ")
+        Channel::shared_pointer chan(channel.lock());
-            + pvaClientChannel->getChannel()->getChannelName()
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " PvaClientPutGet::waitGetGet get or put aleady active ";
         throw std::runtime_error(message);
     }
     waitForPutGet.wait();
+    putGetState = putGetIdle;
     return channelPutGetStatus;
 }
 
 void PvaClientPutGet::getPut()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::getGetPut"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     issueGetPut();
     Status status = waitGetPut();
     if(status.isOK()) return;
-    string message = string("channel ")
+    Channel::shared_pointer chan(channel.lock());
-        + pvaClientChannel->getChannel()->getChannelName()
+    string channelName("disconnected");
+    if(chan) channelName = chan->getChannelName();
+    string message = string("channel ") 
+        + channelName
         + " PvaClientPut::getPut "
         + status.getMessage();
     throw std::runtime_error(message);
@@ -475,15 +415,12 @@ void PvaClientPutGet::getPut()
 
 void PvaClientPutGet::issueGetPut()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::issueGetPut"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
     if(connectState==connectIdle) connect();
-    if(putGetState==putGetActive) {
+    if(putGetState!=putGetIdle) {
-        string message = string("channel ")
+        Channel::shared_pointer chan(channel.lock());
-            + pvaClientChannel->getChannel()->getChannelName()
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " PvaClientPutGet::issueGetPut get or put aleady active ";
         throw std::runtime_error(message);
     }
@@ -493,66 +430,29 @@ void PvaClientPutGet::issueGetPut()
 
 Status PvaClientPutGet::waitGetPut()
 {
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::waitGetPut"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
-    if(putGetState==putGetComplete) return channelPutGetStatus;
     if(putGetState!=putGetActive){
-        string message = string("channel ")
+        Channel::shared_pointer chan(channel.lock());
-            + pvaClientChannel->getChannel()->getChannelName()
+        string channelName("disconnected");
+        if(chan) channelName = chan->getChannelName();
+        string message = string("channel ") + channelName
             + " PvaClientPutGet::waitGetPut get or put aleady active ";
         throw std::runtime_error(message);
     }
     waitForPutGet.wait();
+    putGetState = putGetIdle;
     return channelPutGetStatus;
 }
 
 PvaClientGetDataPtr PvaClientPutGet::getGetData()
 {
-    if(PvaClient::getDebug()) {
-           cout<< "PvaClientPutGet::getGetData"
-               << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-               << endl;
-    }
     checkPutGetState();
-    if(putGetState==putGetIdle){
-       getGet();
-       getPut();
-    }
     return pvaClientGetData;
 }
 
 PvaClientPutDataPtr PvaClientPutGet::getPutData()
 {
-    if(PvaClient::getDebug()) {
-           cout<< "PvaClientPutGet::getPutData"
-               << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-               << endl;
-    }
     checkPutGetState();
-    if(putGetState==putGetIdle){
-       getGet();
-       getPut();
-    }
     return pvaClientPutData;
 }
 
-void PvaClientPutGet::setRequester(PvaClientPutGetRequesterPtr const & pvaClientPutGetRequester)
-{
-    if(PvaClient::getDebug()) {
-        cout << "PvaClientPutGet::setRequester"
-           << " channelName " << pvaClientChannel->getChannel()->getChannelName()
-           << endl;
-    }
-    this->pvaClientPutGetRequester = pvaClientPutGetRequester;
-}
-
-
-PvaClientChannelPtr PvaClientPutGet::getPvaClientChannel()
-{
-    return pvaClientChannel;
-}
-
 }}

src/pvaClientRPC.cpp

@@ -12,12 +12,13 @@
 #include <sstream>
 #include <pv/event.h>
 #include <pv/bitSetUtil.h>
-#include <pv/rpcService.h>
 
 #define epicsExportSharedSymbols
 
 #include <pv/pvaClient.h>
 
+using std::tr1::static_pointer_cast;
+using std::tr1::dynamic_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 using namespace std;
@@ -94,7 +95,7 @@ PvaClientRPC::PvaClientRPC(
         PvaClientPtr const &pvaClient,
         Channel::shared_pointer const & channel,
         PVStructurePtr const &pvRequest)
-:
+: 
   connectState(connectIdle),
   pvaClient(pvaClient),
   channel(channel),
@@ -104,7 +105,7 @@ PvaClientRPC::PvaClientRPC(
 {
     if(PvaClient::getDebug()) {
          cout<< "PvaClientRPC::PvaClientRPC()"
-             << " channelName " << channel->getChannelName()
+             << " channelName " << channel->getChannelName() 
              << endl;
     }
 }
@@ -170,7 +171,7 @@ void PvaClientRPC::rpcConnect(
          cout << "PvaClientRPC::rpcConnect calling waitForConnect.signal\n";
     }
     waitForConnect.signal();
-
+    
 }
 
 void PvaClientRPC::requestDone(
@@ -181,7 +182,6 @@ void PvaClientRPC::requestDone(
     PvaClientRPCRequesterPtr req = pvaClientRPCRequester.lock();
     {
         Lock xx(mutex);
-        requestStatus = status;
         if(PvaClient::getDebug()) {
              string channelName("disconnected");
              Channel::shared_pointer chan(channel.lock());
@@ -195,7 +195,7 @@ void PvaClientRPC::requestDone(
              Channel::shared_pointer chan(channel.lock());
              if(chan) channelName = chan->getChannelName();
              string message = "channel "
-                 + channelName
+                 + channelName 
                  +" PvaClientRPC::requestDone"
                  + " but not active";
              throw std::runtime_error(message);
@@ -222,11 +222,11 @@ void PvaClientRPC::connect()
     Channel::shared_pointer chan(channel.lock());
     string channelName("disconnected");
     if(chan) channelName = chan->getChannelName();
-    string message = string("channel ")
+    string message = string("channel ") 
         + channelName
         + " PvaClientRPC::connect "
         + status.getMessage();
-    throw RPCRequestException(Status::STATUSTYPE_ERROR,message);
+    throw std::runtime_error(message);
 }
 
 void PvaClientRPC::issueConnect()
@@ -237,7 +237,7 @@ void PvaClientRPC::issueConnect()
         string channelName("disconnected");
         if(chan) channelName = chan->getChannelName();
         string message = string("channel ")
-            + channelName
+            + channelName 
             + " pvaClientRPC already connected ";
         throw std::runtime_error(message);
     }
@@ -307,18 +307,10 @@ PVStructure::shared_pointer PvaClientRPC::request(PVStructure::shared_pointer co
         string message = "channel "
             + channelName
             + " PvaClientRPC::request request timeout ";
-        throw RPCRequestException(Status::STATUSTYPE_ERROR,message);
+        throw std::runtime_error(message);
     }
     rpcState = rpcIdle;
-    if(requestStatus.isOK()) return pvResponse;
+    return pvResponse;
-    Channel::shared_pointer chan(channel.lock());
-    string channelName("disconnected");
-    if(chan) channelName = chan->getChannelName();
-    string message = "channel "
-            + channelName
-            + " PvaClientRPC::request status ";
-    message += requestStatus.getMessage();
-    throw RPCRequestException(Status::STATUSTYPE_ERROR,message);
 }
 
 
@@ -326,7 +318,7 @@ void PvaClientRPC::request(
     PVStructure::shared_pointer const & pvArgument,
     PvaClientRPCRequesterPtr const & pvaClientRPCRequester)
 {
-    checkRPCState();
+    checkRPCState();   
     this->pvaClientRPCRequester = pvaClientRPCRequester;
     if(responseTimeout<=0.0) {
          {