Set version number to 3.15.8, clear snapshot

Release Notes changes for 3.15.8
Merge branch 'defaultMessageQueue' into 3.15
2020-05-15 12:00:23 -05:00 · 2020-05-15 11:36:45 -05:00 · 2020-05-14 10:41:52 -05:00 · 2020-05-13 16:11:31 -05:00 · 2020-05-13 15:26:34 -05:00 · 2020-05-07 13:13:26 -05:00
97 changed files with 4818 additions and 2031 deletions
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -0,0 +1,131 @@
+# .appveyor.yml for use with EPICS Base ci-scripts
+# (see: https://github.com/epics-base/ci-scripts)
+
+# Version format
+version: base-{branch}-{build}
+
+#---------------------------------#
+#       build cache               #
+#---------------------------------#
+# The AppVeyor cache allowance is way too small (1GB per account across all projects, branches and jobs)
+# to be used for the dependency builds.
+
+cache:
+  - C:\Users\appveyor\.tools
+
+#---------------------------------#
+#       repository cloning        #
+#---------------------------------#
+
+# Called at very beginning, before repo cloning
+init:
+  # Set autocrlf to make batch files work
+  - git config --global core.autocrlf true
+
+# Set clone depth (do not fetch complete history)
+clone_depth: 5
+
+# Skipping commits affecting only specific files
+skip_commits:
+  files:
+    - 'documentation/*'
+    - 'templates/*'
+    - '**/*.html'
+    - '**/*.md'
+
+#---------------------------------#
+#   build matrix configuration    #
+#---------------------------------#
+
+# Build Configurations: dll/static, regular/debug
+configuration:
+  - dynamic
+  - static
+  - dynamic-debug
+  - static-debug
+
+# Environment variables: compiler toolchain, base version, setup file, ...
+environment:
+  # common / default variables for all jobs
+  SETUP_PATH: .ci-local:.ci
+  BASE: SELF
+
+  matrix:
+  - CMP: vs2019
+    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+  - CMP: vs2017
+    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+  - CMP: vs2015
+  - CMP: vs2013
+  - CMP: vs2012
+  - CMP: vs2010
+  - CMP: mingw
+
+# Platform: processor architecture
+platform:
+  - x86
+  - x64
+
+# Matrix configuration: exclude sets of jobs
+matrix:
+  exclude:
+  # VS2012 and older installs don't have the 64 bit compiler
+  - platform: x64
+    CMP: vs2012
+  - platform: x64
+    CMP: vs2010
+  - platform: x64
+    CMP: vs2008
+  # Exclude more jobs to reduce build time
+  # Skip 32-bit for "middle-aged" compilers
+  - platform: x86
+    CMP: vs2017
+  - platform: x86
+    CMP: vs2015
+
+#---------------------------------#
+#     building & testing          #
+#---------------------------------#
+
+install:
+  - cmd: git submodule update --init --recursive
+  - cmd: python .ci/appveyor/do.py prepare
+
+build_script:
+  - cmd: python .ci/appveyor/do.py build
+
+test_script:
+  - cmd: python .ci/appveyor/do.py test
+
+on_finish:
+  - ps: Get-ChildItem *.tap -Recurse -Force | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
+  - cmd: python .ci/appveyor/do.py build test-results -s
+
+#---------------------------------#
+#         debugging               #
+#---------------------------------#
+
+## if you want to connect by remote desktop to a failed build, uncomment these lines
+## note that you will need to connect within the usual build timeout limit (60 minutes)
+## so you may want to adjust the build matrix above to just build the one of interest
+
+# print the connection info
+#init:
+#  - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+
+# block a failed build (until the watchdog barks)
+#on_failure:
+#  - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+
+#---------------------------------#
+#         notifications           #
+#---------------------------------#
+
+notifications:
+
+  - provider: Email
+    to:
+      - core-talk@aps.anl.gov
+    on_build_success: false
+
+  - provider: GitHubPullRequest
--- a/.ci
+++ b/.ci
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@
 /include/
 /templates/
 /configure/*.local
+/.tests-failed
 O.*/
 /QtC-*
 *.orig
--- a/.gitmodules
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule ".ci"]
+    path = .ci
+    url = https://github.com/epics-base/ci-scripts
+    branch = master
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,32 +1,93 @@
-sudo: false
-dist: trusty
-language: c
-compiler:
-  - gcc
+# .travis.yml for use with EPICS Base ci-scripts
+# (see: https://github.com/epics-base/ci-scripts)
+
+language: cpp
+compiler: gcc
+dist: xenial
+
+cache:
+  directories:
+  - $HOME/.cache
+
 env:
-  - CMPLR=gcc
-  - CMPLR=gcc EXTRA=CMD_CXXFLAGS=-std=c++11
-  - CMPLR=gcc STATIC=YES
-  - CMPLR=clang
-  - CMPLR=clang STATIC=YES
-  - WINE=32 TEST=NO STATIC=YES
-  - WINE=32 TEST=NO STATIC=NO
-  - RTEMS=4.10 TEST=NO
-  - RTEMS=4.9 TEST=NO
+  global:
+    - SETUP_PATH=.ci-local:.ci
+    - BASE=SELF
+
 addons:
  apt:
    packages:
+    # for all EPICS builds
    - libreadline6-dev
    - libncurses5-dev
    - perl
+    # for clang compiler
    - clang
+    # for mingw builds (32bit and 64bit)
    - g++-mingw-w64-i686
-    - bison
-    - flex
-    - texinfo
-    - install-info
-cache:
-  directories:
-   - $HOME/.cache
-install: sh ci/travis-prepare.sh </dev/null
-script: sh ci/travis-build.sh </dev/null
+    - g++-mingw-w64-x86-64
+    # for RTEMS cross builds
+    - qemu-system-x86
+  homebrew:
+    packages:
+    # for all EPICS builds
+    - bash
+    update: true
+
+install:
+  - ./.ci/travis/prepare.sh
+
+script:
+  - ./.ci/travis/build.sh
+
+# Define build jobs
+
+jobs:
+  include:
+
+# Different configurations of default gcc and clang
+# (the DIST settings are just FYI on the travis-ci.org site)
+  - dist: bionic
+    env: DIST=bionic
+
+  - env: DIST=xenial
+
+  - dist: bionic
+    env: DIST=bionic EXTRA="CMD_CXXFLAGS=-std=c++11"
+
+  - dist: trusty
+    env: DIST=trusty STATIC=YES EXTRA="CMD_CXXFLAGS=-std=c++11"
+
+  - dist: bionic
+    compiler: clang
+    env: DIST=bionic
+
+  - compiler: clang
+    env: DIST=xenial
+
+  - dist: trusty
+    compiler: clang
+    env: DIST=trusty STATIC=YES
+
+# Cross-compilations to Windows using MinGW and WINE
+
+  - env: WINE=32 TEST=NO STATIC=YES
+    compiler: mingw
+
+  - env: WINE=32 TEST=NO STATIC=NO
+    compiler: mingw
+
+# Cross-compilation to RTEMS
+
+  - env: RTEMS=4.10 TEST=NO
+
+  - env: RTEMS=4.9 TEST=NO
+
+# MacOS build
+
+  - os: osx
+    env:
+      - EXTRA="CMD_CFLAGS=-mmacosx-version-min=10.7"
+      - EXTRA1="CMD_CXXFLAGS=-mmacosx-version-min=10.7 -std=c++11 -stdlib=libc++"
+      - EXTRA2="CMD_LDXFLAGS=-mmacosx-version-min=10.7 -std=c++11 -stdlib=libc++"
+    compiler: clang
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,89 +0,0 @@
-# AppVeyor configuration for EPICS Base
-
-# Ralph Lange <ralph.lange@gmx.de>
-# Copyright (c) 2016-2017 ITER Organization
-
-# Version format
-version: base-{branch}-{build}
-
-#---------------------------------#
-#       repository cloning        #
-#---------------------------------#
-
-# Called at very beginning, before repo cloning
-init:
-  # Set autocrlf to make batch files work
-  - git config --global core.autocrlf true
-
-# Set clone depth (do not fetch complete history)
-clone_depth: 2
-
-# Skipping commits affecting only specific files
-skip_commits:
-  files:
-    - 'documentation/*'
-    - 'templates/*'
-    - '**/*.html'
-    - '**/*.md'
-
-#---------------------------------#
-#   build matrix configuration    #
-#---------------------------------#
-
-# Build Configurations: dll/static, regular/debug
-configuration:
-  - dynamic
-  - static
-  - dynamic-debug
-  - static-debug
-
-# Environment variables: compiler toolchain
-environment:
-  matrix:
-  - TOOLCHAIN: 10.0
-  - TOOLCHAIN: 11.0
-  - TOOLCHAIN: 12.0
-  - TOOLCHAIN: 14.0
-  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-    TOOLCHAIN: 2017
-  - TOOLCHAIN: mingw
-    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-
-# Platform: architecture
-platform:
-  - x86
-  - x64
-
-# Matrix configuration: allow specific failing jobs
-matrix:
-  exclude:
-  # VS Express installs don't have the 64 bit compiler
-  - platform: x64
-    TOOLCHAIN: 10.0
-
-
-#---------------------------------#
-#     building & testing          #
-#---------------------------------#
-
-install:
-  - cmd: ci/appveyor-prepare.bat
-
-build_script:
-  - cmd: ci/appveyor-make.bat
-
-test_script:
-  - cmd: ci/appveyor-make.bat runtests
-
-#---------------------------------#
-#         notifications           #
-#---------------------------------#
-
-notifications:
-
-  - provider: Email
-    to:
-      - core-talk@aps.anl.gov
-    on_build_success: false
-
-  - provider: GitHubPullRequest
--- a/ci/appveyor-make.bat
+++ b/ci/appveyor-make.bat
@@ -1,119 +0,0 @@
-:: Universal build script for AppVeyor (https://ci.appveyor.com/)
-:: Environment:
-::     TOOLCHAIN      -  toolchain version   [10.0/11.0/12.0/14.0/2017/mingw]
-::     CONFIGURATION  -  determines EPICS build   [dynamic/static]
-::     PLATFORM       -  architecture   [x86/x64]
-::
-:: All command line args are passed to make
-
-Setlocal EnableDelayedExpansion
-
-set "ST="
-if /i "%CONFIGURATION%"=="static" set ST=-static
-
-set OS=64BIT
-if "%PLATFORM%"=="x86" set OS=32BIT
-
-echo [INFO] Platform: %OS%
-
-:: Use parallel make, except for 3.14
-set "MAKEARGS=-j2 -Otarget"
-if "%APPVEYOR_REPO_BRANCH%"=="3.14" set MAKEARGS=
-
-if "%TOOLCHAIN%"=="mingw" (
-    set "MAKE=mingw32-make"
-    if "%OS%"=="64BIT" (
-        set "EPICS_HOST_ARCH=windows-x64-mingw"
-        set "INCLUDE=C:\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\include;%INCLUDE%"
-        set "PATH=C:\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin;%PATH%"
-        echo [INFO] MinGW Toolchain 64bit
-    ) else (
-        set "EPICS_HOST_ARCH=win32-x86-mingw"
-        set "INCLUDE=C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\include;%INCLUDE%"
-        set "PATH=C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin;%PATH%"
-        echo [INFO] MinGW Toolchain 32bit
-    )
-    echo [INFO] Compiler Version
-    gcc -v
-    goto Finish
-)
-
-set "VSINSTALL=C:\Program Files (x86)\Microsoft Visual Studio %TOOLCHAIN%"
-if not exist "%VSINSTALL%\" set "VSINSTALL=C:\Program Files (x86)\Microsoft Visual Studio\%TOOLCHAIN%\Community"
-if not exist "%VSINSTALL%\" goto MSMissing
-
-set "MAKE=C:\tools\make"
-
-echo [INFO] APPVEYOR_BUILD_WORKER_IMAGE=%APPVEYOR_BUILD_WORKER_IMAGE%
-
-if "%OS%"=="64BIT" (
-    set EPICS_HOST_ARCH=windows-x64%ST%
-    :: VS 2017
-    if exist "%VSINSTALL%\VC\Auxiliary\Build\vcvars64.bat" (
-        call "%VSINSTALL%\VC\Auxiliary\Build\vcvars64.bat"
-        where cl
-        if !ERRORLEVEL! NEQ 0 goto MSMissing
-        goto MSFound
-    )
-    if exist "%VSINSTALL%\VC\vcvarsall.bat" (
-        call "%VSINSTALL%\VC\vcvarsall.bat" amd64
-        where cl
-        if !ERRORLEVEL! NEQ 0 (
-            call "%VSINSTALL%\VC\vcvarsall.bat" x86_amd64
-            where cl
-            if !ERRORLEVEL! NEQ 0 goto MSMissing
-        )
-        goto MSFound
-    )
-    if exist "%VSINSTALL%\VC\bin\amd64\vcvars64.bat" (
-        call "%VSINSTALL%\VC\bin\amd64\vcvars64.bat"
-        where cl
-        if !ERRORLEVEL! NEQ 0 goto MSMissing
-        goto MSFound
-    )
-) else (
-    set EPICS_HOST_ARCH=win32-x86%ST%
-    :: VS 2017
-    if exist "%VSINSTALL%\VC\Auxiliary\Build\vcvars32.bat" (
-        call "%VSINSTALL%\VC\Auxiliary\Build\vcvars32.bat"
-        where cl
-        if !ERRORLEVEL! NEQ 0 goto MSMissing
-        goto MSFound
-    )
-    if exist "%VSINSTALL%\VC\vcvarsall.bat" (
-        call "%VSINSTALL%\VC\vcvarsall.bat" x86
-        where cl
-        if !ERRORLEVEL! NEQ 0 goto MSMissing
-        goto MSFound
-    )
-    if exist "%VSINSTALL%\VC\bin\vcvars32.bat" (
-        call "%VSINSTALL%\VC\bin\vcvars32.bat"
-        where cl
-        if !ERRORLEVEL! NEQ 0 goto MSMissing
-        goto MSFound
-    )
-    if exist "%VSINSTALL%\Common7\Tools\vsvars32.bat" (
-        call "%VSINSTALL%\Common7\Tools\vsvars32.bat"
-        where cl
-        if !ERRORLEVEL! NEQ 0 goto MSMissing
-        goto MSFound
-    )
-)
-
-:MSMissing
-echo [INFO] Installation for MSVC Toolchain %TOOLCHAIN% / %OS% seems to be missing
-exit 1
-
-:MSFound
-echo [INFO] Microsoft Visual Studio Toolchain %TOOLCHAIN%
-echo [INFO] Compiler Version
-cl
-
-:Finish
-echo [INFO] EPICS_HOST_ARCH: %EPICS_HOST_ARCH%
-echo [INFO] Make version
-%MAKE% --version
-echo [INFO] Perl version
-perl --version
-
-%MAKE% %MAKEARGS% %*
--- a/ci/appveyor-prepare.bat
+++ b/ci/appveyor-prepare.bat
@@ -1,38 +0,0 @@
-:: Build script for AppVeyor (https://ci.appveyor.com/)
-:: Environment:
-::     TOOLCHAIN      -  Toolchain Version  [9.0/10.0/11.0/12.0/14.0/mingw]
-::     CONFIGURATION  -  determines EPICS build  [dynamic/static, -debug]
-::     PLATFORM       -  "x86" -> use 32bit architecture
-::
-:: Prepares an Appveyor build by excuting the following steps
-::     - Set up configure\CONFIG_SITE for static vs. dynamic build
-::     - Install Mingw  (TOOLCHAIN setting) in the in the appropriate flavor
-::     - Download and install Make-4.1 from EPICS download page
-
-Setlocal EnableDelayedExpansion
-
-set OS=64BIT
-if "%PLATFORM%"=="x86" set OS=32BIT
-
-echo [INFO] Platform: %OS%
-
-if "%TOOLCHAIN%"=="mingw" (
-    echo.%CONFIGURATION% | findstr /C:"static">nul && (
-        echo SHARED_LIBRARIES=NO>> configure\CONFIG_SITE
-        echo STATIC_BUILD=YES>> configure\CONFIG_SITE
-        echo [INFO] EPICS set up for static build
-    ) || (
-        echo [INFO] EPICS set up for dynamic build
-    )
-    echo.%CONFIGURATION% | findstr /C:"debug">nul && (
-        echo HOST_OPT=NO>> configure\CONFIG_SITE
-        echo [INFO] EPICS set up for debug build
-    ) || (
-        echo [INFO] EPICS set up for optimized build
-    )
-)
-
-echo [INFO] Installing Make 4.2.1 from ANL web site
-curl -fsS --retry 3 -o C:\tools\make-4.2.1.zip https://epics.anl.gov/download/tools/make-4.2.1-win64.zip
-cd \tools
-"C:\Program Files\7-Zip\7z" e make-4.2.1.zip
--- a/ci/travis-build.sh
+++ b/ci/travis-build.sh
@@ -1,90 +0,0 @@
-#!/bin/sh
-set -e -x
-
-die() {
-  echo "$1" >&2
-  exit 1
-}
-
-ticker() {
-  while true
-  do
-    sleep 60
-    date -R
-    [ -r "$1" ] && tail -n10 "$1"
-  done
-}
-
-CACHEKEY=1
-
-EPICS_HOST_ARCH=`perl src/tools/EpicsHostArch.pl`
-
-[ -e configure/os/CONFIG_SITE.Common.linux-x86 ] || die "Wrong location: $PWD"
-
-case "$CMPLR" in
-clang)
-  echo "Host compiler is clang"
-  cat << EOF >> configure/os/CONFIG_SITE.Common.$EPICS_HOST_ARCH
-GNU         = NO
-CMPLR_CLASS = clang
-CC          = clang
-CCC         = clang++
-EOF
-  ;;
-*) echo "Host compiler is default";;
-esac
-
-if [ "$STATIC" = "YES" ]
-then
-  echo "Build static libraries/executables"
-  cat << EOF >> configure/CONFIG_SITE
-SHARED_LIBRARIES=NO
-STATIC_BUILD=YES
-EOF
-fi
-
-# requires wine and g++-mingw-w64-i686
-if [ "$WINE" = "32" ]
-then
-  echo "Cross mingw32"
-  sed -i -e '/CMPLR_PREFIX/d' configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
-  cat << EOF >> configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
-CMPLR_PREFIX=i686-w64-mingw32-
-EOF
-  cat << EOF >> configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS+=win32-x86-mingw
-EOF
-fi
-
-# set RTEMS to eg. "4.9" or "4.10"
-# requires qemu, bison, flex, texinfo, install-info
-if [ -n "$RTEMS" ]
-then
-  echo "Cross RTEMS${RTEMS} for pc386"
-  install -d /home/travis/.cache
-  curl -L "https://github.com/mdavidsaver/rsb/releases/download/travis-20160306-2/rtems${RTEMS}-i386-trusty-20190306-2.tar.gz" \
-  | tar -C /home/travis/.cache -xj
-
-  sed -i -e '/^RTEMS_VERSION/d' -e '/^RTEMS_BASE/d' configure/os/CONFIG_SITE.Common.RTEMS
-  cat << EOF >> configure/os/CONFIG_SITE.Common.RTEMS
-RTEMS_VERSION=$RTEMS
-RTEMS_BASE=/home/travis/.cache/rtems${RTEMS}-i386
-EOF
-  cat << EOF >> configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS+=RTEMS-pc386
-EOF
-
-  # find local qemu-system-i386
-  export PATH="$HOME/.cache/qemu/usr/bin:$PATH"
-  echo -n "Using QEMU: "
-  type qemu-system-i386 || echo "Missing qemu"
-  EXTRA=RTEMS_QEMU_FIXUPS=YES
-fi
-
-make -j2 $EXTRA
-
-if [ "$TEST" != "NO" ]
-then
-   make tapfiles
-   make -s test-results
-fi
--- a/ci/travis-prepare.sh
+++ b/ci/travis-prepare.sh
@@ -1,40 +0,0 @@
-#!/bin/sh
-set -e -x
-
-die() {
-  echo "$1" >&2
-  exit 1
-}
-
-CURDIR="$PWD"
-
-QDIR="$HOME/.cache/qemu"
-
-if [ -n "$RTEMS" -a "$TEST" = "YES" ]
-then
-  git clone --quiet --branch vme --depth 10 https://github.com/mdavidsaver/qemu.git "$HOME/.build/qemu"
-  cd "$HOME/.build/qemu"
-
-  HEAD=`git log -n1 --pretty=format:%H`
-  echo "HEAD revision $HEAD"
-
-  [ -e "$HOME/.cache/qemu/built" ] && BUILT=`cat "$HOME/.cache/qemu/built"`
-  echo "Cached revision $BUILT"
-
-  if [ "$HEAD" != "$BUILT" ]
-  then
-    echo "Building QEMU"
-    git submodule --quiet update --init
-
-    install -d "$HOME/.build/qemu/build"
-    cd         "$HOME/.build/qemu/build"
-
-    "$HOME/.build/qemu/configure" --prefix="$HOME/.cache/qemu/usr" --target-list=i386-softmmu --disable-werror
-    make -j2
-    make install
-
-    echo "$HEAD" > "$HOME/.cache/qemu/built"
-  fi
-fi
-
-cd "$CURDIR"
--- a/configure/CONFIG_BASE
+++ b/configure/CONFIG_BASE
@@ -68,8 +68,6 @@ DBTOMENUH                  = $(PERL) $(TOOLS)/dbdToMenuH.pl
 REGISTERRECORDDEVICEDRIVER = $(PERL) $(TOOLS)/registerRecordDeviceDriver.pl
 CONVERTRELEASE             = $(PERL) $(call FIND_TOOL,convertRelease.pl)
 FULLPATHNAME               = $(PERL) $(TOOLS)/fullPathName.pl
-TAPTOJUNIT                 = $(PERL) $(TOOLS)/tap-to-junit-xml.pl
-PROVE                      = $(PERL) $(TOOLS)/epicsProve.pl

 #-------------------------------------------------------
 # tools for installing libraries and products
@@ -83,6 +81,15 @@ INSTALL_LIBRARY = $(INSTALL)
 MKMF                       = $(PERL) $(TOOLS)/mkmf.pl
 REPLACEVAR                 = $(PERL) $(TOOLS)/replaceVAR.pl

+#---------------------------------------------------------------
+# Tools for testing
+TAPTOJUNIT                 = $(PERL) $(TOOLS)/tap-to-junit-xml.pl
+PROVE                      = $(PERL) $(TOOLS)/epicsProve.pl
+PROVE.tap                  = $(PROVE) --ext .tap --exec "$(CAT)"
+
+TEST_FAILURE_FILE          = $(TOP)/.tests-failed
+PROVE_FAILURE              = echo $(abspath .)>> $(TEST_FAILURE_FILE)
+
 #---------------------------------------------------------------
 # private versions of lex/yacc from EPICS
 EYACC = $(TOOLS)/antelope$(HOSTEXE)
--- a/configure/CONFIG_BASE_VERSION
+++ b/configure/CONFIG_BASE_VERSION
@@ -4,7 +4,7 @@
 # Copyright (c) 2002 The Regents of the University of California, as
 #     Operator of Los Alamos National Laboratory.
 # EPICS BASE is distributed subject to a Software License Agreement found
-# in the file LICENSE that is included with this distribution. 
+# in the file LICENSE that is included with this distribution.
 #*************************************************************************
 #
 #  EPICS Version information
@@ -27,7 +27,7 @@ EPICS_VERSION = 3
 EPICS_REVISION = 15

 # EPICS_MODIFICATION must be a number >=0 and <256
-EPICS_MODIFICATION = 7
+EPICS_MODIFICATION = 8

 # EPICS_PATCH_LEVEL must be a number (win32 resource file requirement)
 # Not included if zero
@@ -37,12 +37,8 @@ EPICS_PATCH_LEVEL = 0
 #EPICS_DEV_SNAPSHOT=-DEV
 #EPICS_DEV_SNAPSHOT=-pre1
 #EPICS_DEV_SNAPSHOT=-pre1-DEV
-#EPICS_DEV_SNAPSHOT=-pre2
-#EPICS_DEV_SNAPSHOT=-pre2-DEV
 #EPICS_DEV_SNAPSHOT=-rc1
 #EPICS_DEV_SNAPSHOT=-rc1-DEV
-#EPICS_DEV_SNAPSHOT=-rc2
-#EPICS_DEV_SNAPSHOT=-rc2-DEV
 EPICS_DEV_SNAPSHOT=

 # No changes should be needed below here
--- a/configure/RULES_BUILD
+++ b/configure/RULES_BUILD
@@ -105,17 +105,17 @@ PRODTARGETS += $(PRODNAME) $(MUNCHNAME) $(CTDT_SRCS) $(CTDT_OBJS) $(NMS)
 TESTPRODTARGETS += $(TESTPRODNAME) $(TESTMUNCHNAME)

 #---------------------------------------------------------------
-#   Test specifications and test result files
+#   Test result files
 #
-ifneq (,$(strip $(TESTS)))
-TARGETS += testspec
-endif

-# Enable testing if this host can run tests on the current target
-ifneq (,$(findstring $(T_A),$(EPICS_HOST_ARCH) $(CROSS_COMPILER_RUNTEST_ARCHS)))
+# Enable testing if this host can run tests for the current target
+ifneq (,$(filter $(T_A), $(EPICS_HOST_ARCH) $(CROSS_COMPILER_RUNTEST_ARCHS)))
 RUNTESTS_ENABLED = YES
-TAPFILES += $(TESTSCRIPTS:.t=.tap)
-JUNITFILES += $(TAPFILES:.tap=.xml)
+TESTSCRIPTS.t = $(filter %.t, $(TESTSCRIPTS))
+TAPFILES.t += $(TESTSCRIPTS.t:.t=.tap)
+JUNITFILES.t += $(TESTSCRIPTS.t:.t=.xml)
+TAPFILES += $(TAPFILES.t)
+JUNITFILES += $(JUNITFILES.t)
 endif

 #---------------------------------------------------------------
@@ -335,23 +335,22 @@ $(MODNAME): %$(MODEXT): %$(EXE)
 #---------------------------------------------------------------
 # Automated testing

-runtests: $(TESTSCRIPTS)
+runtests: run-tap-tests
+run-tap-tests: $(TESTSCRIPTS.t)
+ifneq ($(TESTSCRIPTS.t),)
 ifdef RUNTESTS_ENABLED
-	-$(PERL) -MTest::Harness -e 'runtests @ARGV if @ARGV;' $^
+	$(PROVE) --failures --color $^ || $(PROVE_FAILURE)
+endif
 endif

-testspec: $(TESTSCRIPTS)
-	@$(RM) $@
-	@echo OS-class: $(OS_CLASS) > $@
-	@echo Target-arch: $(T_A) >> $@
-	$(if $^, @echo Tests: $^ >> $@)
-	$(if $(TESTFILES), @echo Files: $(TESTFILES) >> $@)
-	$(if $(TESTSPEC_$(OS_CLASS)), @echo "Harness: $(TESTSPEC_$(OS_CLASS))" >> $@)
+tapfiles: $(TAPFILES)
+junitfiles: $(JUNITFILES)

-test-results: tapfiles
-ifneq ($(TAPFILES),)
+test-results: tap-results
+tap-results: $(TAPFILES)
+ifneq ($(strip $(TAPFILES)),)
 ifdef RUNTESTS_ENABLED
-	$(PROVE) --failures --ext .tap --exec "$(CAT)" --color $(TAPFILES)
+	$(PROVE.tap) --failures --color $^ || $(PROVE_FAILURE)
 endif

 CURRENT_TAPFILES := $(wildcard $(TAPFILES))
@@ -366,16 +365,13 @@ ifneq ($(CURRENT_JUNITFILES),)
 	$(RM) $(CURRENT_JUNITFILES)
 endif

-tapfiles: $(TESTSCRIPTS) $(TAPFILES)
-junitfiles: $(JUNITFILES)
-
 # A .tap file is the output from running the associated test script
-%.tap: %.t
+$(TAPFILES.t): %.tap: %.t
 ifdef RUNTESTS_ENABLED
 	-$(PERL) $< -tap > $@
 endif

-%.xml: %.tap
+$(JUNITFILES.t): %.xml: %.tap
 	$(TAPTOJUNIT) --puretap --output $@ --input $< $*

 # If there's a perl test script (.plt) available, use it
@@ -522,8 +518,8 @@ $(INSTALL_TEMPLATES_SUBDIR)/%: %
 .PRECIOUS: $(COMMON_INC)

 .PHONY: all host inc build install clean rebuild buildInstall build_clean
-.PHONY: runtests tapfiles clean-tests test-results junitfiles
-.PHONY: checkRelease warnRelease noCheckRelease
+.PHONY: runtests run-tap-tests tapfiles junitfiles test-results tap-results
+.PHONY: clean-tests checkRelease warnRelease noCheckRelease

 endif # BASE_RULES_BUILD
 #	EOF RULES_BUILD
--- a/configure/RULES_DIRS
+++ b/configure/RULES_DIRS
@@ -4,7 +4,7 @@
 # Copyright (c) 2002 The Regents of the University of California, as
 #     Operator of Los Alamos National Laboratory.
 # EPICS BASE is distributed subject to a Software License Agreement found
-# in the file LICENSE that is included with this distribution. 
+# in the file LICENSE that is included with this distribution.
 #*************************************************************************

 ARCHS += $(BUILD_ARCHS)
@@ -54,7 +54,7 @@ $(foreach dir, $(DIRS), \

 define DEP_template2
 $(1)$$(DIVIDER)$(2) : $$(foreach ddir, $$($(1)_DEPEND_DIRS), \
-    $$(addsuffix $$(DIVIDER)$(2),$$(ddir)))
+    $$(addsuffix $$(DIVIDER)$(2),$$(ddir))) | before-$(2)
 endef
 $(foreach action, $(ACTIONS), \
    $(foreach dir, $(DIRS), \
@@ -79,15 +79,22 @@ $(foreach arch, $(ARCHS), \

 dirPart = $(join $(dir $@), $(word 1, $(subst $(DIVIDER), ,$(notdir $@))))
 actionArchPart = $(join $(word 2, $(subst $(DIVIDER), ,$(notdir $@))), \
-   $(addprefix $(DIVIDER),$(word 3, $(subst $(DIVIDER), ,$(notdir $@))))) 
-$(DIRS) $(dirActionTargets) $(dirArchTargets) $(dirActionArchTargets) :
+   $(addprefix $(DIVIDER),$(word 3, $(subst $(DIVIDER), ,$(notdir $@)))))
+
+$(DIRS) $(dirActionTargets) $(dirArchTargets) $(dirActionArchTargets):
 	$(MAKE) -C $(dirPart) $(actionArchPart)

+# before-action rules are run once prior to recursing through the
+# list of subdirectories and running the action rule in each one.
+# See DEP_template2 above for how that rule ordering is achieved.
+beforeActions = $(addprefix before-,$(ACTIONS))
+$(beforeActions):
+
 $(ARCHS) $(ACTIONS) $(actionArchTargets) :%: \
    $(foreach dir, $(DIRS), $(dir)$(DIVIDER)%)

 .PHONY : $(DIRS) all host rebuild
-.PHONY : $(ARCHS) $(ACTIONS)
+.PHONY : $(ARCHS) $(ACTIONS) $(beforeActions)
 .PHONY : $(dirActionTargets) $(dirArchTargets)
 .PHONY : $(dirActionArchTargets)
 .PHONY : $(actionArchTargets)
--- a/configure/RULES_TOP
+++ b/configure/RULES_TOP
@@ -16,32 +16,30 @@ cvsclean:
 	$(PERL) $(CVSCLEAN)

 realuninstall: uninstallDirs
-	$(RMDIR) $(INSTALL_LOCATION_BIN)
-	$(RMDIR) $(INSTALL_LOCATION_LIB)
+	$(RMDIR) $(INSTALL_LOCATION_BIN) $(INSTALL_LOCATION_LIB)

 UNINSTALL_DIRS += $(INSTALL_DBD) $(INSTALL_INCLUDE) $(INSTALL_DOC) \
    $(INSTALL_HTML) $(INSTALL_TEMPLATES) $(INSTALL_DB) $(DIRECTORY_TARGETS)
 uninstallDirs:
 	$(RMDIR) $(UNINSTALL_DIRS)

+EMPTY_INSTALL_DIRS = \
+    $(if $(wildcard $(INSTALL_LOCATION_BIN)/*),,$(INSTALL_LOCATION_BIN)) \
+    $(if $(wildcard $(INSTALL_LOCATION_LIB)/*),,$(INSTALL_LOCATION_LIB))
 uninstall: archuninstall uninstallDirs
+	$(RMDIR) $(EMPTY_INSTALL_DIRS)

-archuninstall: $(addprefix uninstall$(DIVIDER),$(BUILD_ARCHS)) | cleandirs
+archuninstall: $(addprefix uninstall$(DIVIDER),$(BUILD_ARCHS))

-archPart = $(word 2, $(subst $(DIVIDER), ,$@))
 uninstall$(DIVIDER)%:
-	$(RMDIR) $(INSTALL_LOCATION_BIN)/$(archPart)
-	$(RMDIR) $(INSTALL_LOCATION_LIB)/$(archPart)
-
-cleandirs:
-	@$(NOP)
-ifeq ($(wildcard $(INSTALL_LOCATION_BIN)/*),)
-	$(RMDIR) $(INSTALL_LOCATION_BIN)
-endif
-ifeq ($(wildcard $(INSTALL_LOCATION_LIB)/*),)
-	$(RMDIR) $(INSTALL_LOCATION_LIB)
-endif
+	$(RMDIR) $(addsuffix /$(subst uninstall$(DIVIDER),,$@), \
+	    $(INSTALL_LOCATION_BIN) $(INSTALL_LOCATION_LIB))

+before-runtests before-test-results: rm-failure-file
+rm-failure-file:
+	@$(RM) $(TEST_FAILURE_FILE)
+runtests test-results:
+	$(PERL) $(TOOLS)/testFailures.pl $(TEST_FAILURE_FILE)

 help:
 	@echo "Usage: gnumake [options] [target] ..."
@@ -75,8 +73,8 @@ help:
 	@echo "Indiv. object targets are supported by O.<arch> level Makefile .e.g"
 	@echo "     xxxRecord.o"

-.PHONY: cleandirs distclean cvsclean realuninstall archuninstall uninstallDirs
-.PHONY: uninstall help
+.PHONY: distclean cvsclean realuninstall archuninstall uninstallDirs
+.PHONY: uninstall rm-failure-file help

 # Include <top>/cfg/TOP_RULES* files from tops defined in RELEASE* files
 #
--- a/configure/os/CONFIG.Common.win32-x86-mingw
+++ b/configure/os/CONFIG.Common.win32-x86-mingw
@@ -30,7 +30,7 @@ ARCH_DEP_LDFLAGS += -m32
 # Compiler does not define  __unix __unix__ unix

 # Override for -DUNIX from CONFIG.Common.UnixCommon
-OP_SYS_CPPFLAGS = -D_MINGW
+OP_SYS_CPPFLAGS = -D_MINGW -D__USE_MINGW_ANSI_STDIO

 EXE = .exe
 RES = .coff
--- a/configure/os/CONFIG.linux-x86.windows-x64-mingw
+++ b/configure/os/CONFIG.linux-x86.windows-x64-mingw
@@ -4,21 +4,5 @@
 # Override these definitions in CONFIG_SITE.linux-x86.windows-x64-mingw
 #-------------------------------------------------------

-# Include common gnu compiler definitions
-include $(CONFIG)/CONFIG.gnuCommon
-
-# Add resource compiler
-RCCMD = $(GNU_BIN)/$(CMPLR_PREFIX)windres$(CMPLR_SUFFIX) $(INCLUDES) $< $@
-
-# Remove -fPIC flags, add out-implib
-SHRLIB_CFLAGS =
-SHRLIB_LDFLAGS = -shared \
-    -Wl,--out-implib,$(DLLSTUB_PREFIX)$*$(DLLSTUB_SUFFIX)
-LOADABLE_SHRLIB_LDFLAGS = -shared \
-    -Wl,--out-implib,$(DLLSTUB_PREFIX)$*$(DLLSTUB_SUFFIX)
-
-# No need to explicitly link with gcc library
-GNU_LDLIBS_YES =
-
-# Link with winsock2
-OP_SYS_LDLIBS = -lws2_32
+# Use the definitions from the win32-x86-mingw target
+include $(CONFIG)/os/CONFIG.linux-x86.win32-x86-mingw
--- a/configure/os/CONFIG.win32-x86.win32-x86
+++ b/configure/os/CONFIG.win32-x86.win32-x86
@@ -141,13 +141,16 @@ STATIC_LDFLAGS=
 RANLIB=

 #
-# option needed for parallel builds with Visual Studio 2015 onward
-#
+# option needed for parallel builds with Visual Studio 2013 onward
+# VS2012 and above have VisualStudioVersion, so just need to exclude 2012 (11.0)
 # -FS Force Synchronous PDB Writes
+#
 ifneq ($(VisualStudioVersion),)
+ifneq ($(VisualStudioVersion),11.0)
  OPT_CXXFLAGS_NO += -FS
  OPT_CFLAGS_NO += -FS
 endif
+endif


 #
--- a/documentation/KnownProblems.html
+++ b/documentation/KnownProblems.html
@@ -4,17 +4,17 @@
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
-  <title>Known Problems in R3.15.7</title>
+  <title>Known Problems in R3.15.8</title>
 </head>

 <body>
-<h1 style="text-align: center">EPICS Base R3.15.7: Known Problems</h1>
+<h1 style="text-align: center">EPICS Base R3.15.8: Known Problems</h1>

 <p>Any patch files linked below should be applied at the root of the
-base-3.15.7 tree. Download them, then use the GNU Patch program as
+base-3.15.8 tree. Download them, then use the GNU Patch program as
 follows:</p>

-<blockquote><pre>% <b>cd <i>/path/to/</i>base-3.15.7</b>
+<blockquote><pre>% <b>cd <i>/path/to/</i>base-3.15.8</b>
 % <b>patch -p1 &lt; <i>/path/to/</i>file.patch</b></pre></blockquote>

 <p>The following significant problems have been reported with this
--- a/documentation/README.md
+++ b/documentation/README.md
@@ -1,6 +1,6 @@
 # Installation Instructions

-## EPICS Base Release 3.15.7
+## EPICS Base Release 3.15.8

 -----

@@ -62,7 +62,7 @@ vendor's C and C++ compilers, as well as the GNU gcc and g++
 compilers. The GNU cross-compilers work for all cross-compiled
 targets. You may need the C and C++ compilers to be in your search
 path to do EPICS builds; check the definitions of CC and CCC in
-base/configure/os/CONFIG.&lt;host>.&lt;host> if you have problems.
+`base/configure/os/CONFIG.<host>.<host>` if you have problems.

 ### <span id="0_0_6">Software requirements</span>

@@ -187,7 +187,7 @@ base/documentation directory of the distribution.
        CONFIG                Includes configure files and allows variable overrides
        CONFIG.CrossCommon    Cross build definitions
        CONFIG.gnuCommon      Gnu compiler build definitions for all archs
-        CONFIG_ADDONS         Definitions for &lt;osclass> and DEFAULT options
+        CONFIG_ADDONS         Definitions for <osclass> and DEFAULT options
        CONFIG_APP_INCLUDE
        CONFIG_BASE           EPICS base tool and location definitions
        CONFIG_BASE_VERSION   Definitions for EPICS base version number
@@ -207,22 +207,22 @@ base/documentation directory of the distribution.
        RULES_EXPAND
        RULES_FILE_TYPE
        RULES_TARGET
-        RULES_TOP             Rules specific to a &lt;top> dir (uninstall and tar)
+        RULES_TOP             Rules specific to a <top> dir (uninstall and tar)
        Sample.Makefile       Sample makefile with comments
 ```

 #### base/configure/os directory - contains os-arch specific definitions

 ```
-        CONFIG.&lt;host>.&lt;target>      Specific host-target build definitions
-        CONFIG.Common.&lt;target>      Specific target definitions for all hosts
-        CONFIG.&lt;host>.Common        Specific host definitions for all targets
+        CONFIG.<host>.<target>      Specific host-target build definitions
+        CONFIG.Common.<target>      Specific target definitions for all hosts
+        CONFIG.<host>.Common        Specific host definitions for all targets
        CONFIG.UnixCommon.Common    Definitions for Unix hosts and all targets
        CONFIG.Common.UnixCommon    Definitions for Unix targets and all hosts
        CONFIG.Common.vxWorksCommon Specific host definitions for all vx targets
-        CONFIG_SITE.&lt;host>.&lt;target> Site specific host-target definitions
-        CONFIG_SITE.Common.&lt;target> Site specific target defs for all hosts
-        CONFIG_SITE.&lt;host>.Common   Site specific host defs for all targets
+        CONFIG_SITE.<host>.<target> Site specific host-target definitions
+        CONFIG_SITE.Common.<target> Site specific target defs for all hosts
+        CONFIG_SITE.<host>.Common   Site specific host defs for all targets
 ```

 ### <span id="0_0_12">Building EPICS base (Unix and Win32)</span>
@@ -294,8 +294,8 @@ distribution file to be overridden except with CONFIG in the name
 changed to `CONFIG_SITE`.

 ```
-        configure/os/CONFIG.&lt;host>.&lt;host>      Host build settings
-        configure/os/CONFIG.&lt;host>.Common      Host common build settings
+        configure/os/CONFIG.<host>.<host>      Host build settings
+        configure/os/CONFIG.<host>.Common      Host common build settings
 ```

 **Target configuration**
@@ -307,8 +307,8 @@ replaced by `CONFIG_SITE`. This step is necessary even if the host
 system is the only target system.

 ```
-        configure/os/CONFIG.Common.&lt;target>     Target common settings
-        configure/os/CONFIG.&lt;host>.&lt;target>     Host-target settings
+        configure/os/CONFIG.Common.<target>     Target common settings
+        configure/os/CONFIG.<host>.<target>     Host-target settings
 ```

 #### Build EPICS base
@@ -351,7 +351,7 @@ the host system.
 A perl script, makeBaseExt.pl, is included in the distribution file.
 This script will create a sample extension that can be built and
 executed. The makeBaseApp.pl and makeBaseExt.pl scripts are installed
-into the install location bin/&lt;hostarch> directory during the base
+into the install location `bin/<hostarch>` directory during the base
 build.

 ### <span id="0_0_14">Multiple host platforms</span>
@@ -365,7 +365,7 @@ into the `$(INSTALL_LOCATION)/bin/<arch>` directories. Libraries are
 installed into $`(INSTALL_LOCATION)/lib/<arch>`. The default
 definition for `$(INSTALL_LOCATION)` is `$(TOP)` which is the root
 directory in the distribution directory structure, base. Created
-object files are stored in O.&lt;arch> source subdirectories, This
+object files are stored in `O.<arch>` source subdirectories, This
 allows objects for multiple cross target architectures to be
 maintained at the same time. To build EPICS base for a specific
 host/target combination you must have the proper host/target C/C++
--- a/documentation/RELEASE_NOTES.md
+++ b/documentation/RELEASE_NOTES.md
@@ -1,4 +1,110 @@
-# EPICS Base Release 3.15.7
+# EPICS Base Release 3.15.8
+
+## Changes made between 3.15.7 and 3.15.8
+
+### Bug fixes
+
+The following launchpad bugs have fixes included in this release:
+
+- [lp: 1812084](https://bugs.launchpad.net/epics-base/+bug/1812084), Build
+  failure on RTEMS 4.10.2
+- [lp: 1829770](https://bugs.launchpad.net/epics-base/+bug/1829770), event
+  record device support broken with constant INP
+- [lp: 1829919](https://bugs.launchpad.net/epics-base/+bug/1829919), IOC
+  segfaults when calling dbLoadRecords after iocInit
+- [lp: 1838792](https://bugs.launchpad.net/epics-base/+bug/1838792), epicsCalc
+  bit-wise operators on aarch64
+- [lp: 1841608](https://bugs.launchpad.net/epics-base/+bug/1841608), logClient
+  falsely sends error logs on all connections
+- [lp: 1853168](https://bugs.launchpad.net/epics-base/+bug/1853168), undefined
+  reference to `clock_gettime()`
+- [lp: 1862328](https://bugs.launchpad.net/epics-base/+bug/1862328), Race
+  condition on IOC start leaves rsrv unresponsive
+- [lp: 1868486](https://bugs.launchpad.net/epics-base/+bug/1868486),
+  epicsMessageQueue lost messages
+
+
+### Improvements to the self-test build targets
+
+This release contains changes that make it possible to integrate another test
+running and reporting system (such as Google's gtest) into the EPICS build
+system. The built-in test-runner and reporting system will continue to be used
+by the test programs inside Base however.
+
+These GNUmake `tapfiles` and `test-results` build targets now collect a list of
+the directories that experienced test failures and display those at the end of
+running and/or reporting all of the tests. The GNUmake process will also only
+exit with an error status after running and/or reporting all of the test
+results; previously the `-k` flag to make was needed and even that didn't always
+work.
+
+Continuous Integration systems are recommended to run `make tapfiles` (or if
+they can read junittest output instead of TAP `make junitests`) followed by
+`make -s test-results` to display the results of the tests. If multiple CPUs are
+available the `-j` flag can be used to run tests in parallel, giving the maximum
+jobs that should be allowed so `make -j4 tapfiles` for a system with 4 CPUs say.
+Running many more jobs than you have CPUs is likely to be slower and is not
+recommended.
+
+### Calc Engine Fixes and Enhancements
+
+The code that implements bit operations for Calc expressions has been reworked
+to better handle some CPU architectures and compilers. As part of this work a
+new operator has been added: `>>>` performs a logical right-shift, inserting
+zero bits into the most significant bits (the operator `>>` is an arithmetic
+right-shift which copies the sign bit as it shifts the value rightwards).
+
+### IOC logClient Changes
+
+The IOC's error logging system has been updated significantly to fix a number
+of issues including:
+
+  - Only send errlog messages to iocLogClient listeners
+  - Try to minimize lost messages while the log server is down:
+    + Detect disconnects sooner
+    + Don't discard the buffer on disconnect
+    + Flush the buffer immediately after a server reconnects
+
+### epicsThread: Main thread defaults to allow blocking I/O
+
+VxWorks IOCs (and potentially RTEMS IOCs running GeSys) have had problems with
+garbled error messages from dbStaticLib routines for some time &mdash; messages
+printed before `iocInit` were being queued through the errlog thread instead of
+being output immediately. This has been fixed by initializing the main thread
+with its `OkToBlock` flag set instead of cleared. IOCs running on other
+operating systems that use iocsh to execute the startup script previously had
+that set anyway in iocsh so were not affected, but this change might cause other
+programs that don't use iocsh to change their behavior slightly if they use
+`errlogPrintf()`, `epicsPrintf()` or `errPrintf()`.
+
+### catools: Handle data type changes in camonitor
+
+The camonitor program didn't properly cope if subscribed to a channel whose data
+type changed when its IOC was rebooted without restarting the camonitor program.
+This has now been fixed.
+
+### More Record Reference Documentation
+
+The remaining record types have had their reference pages moved from the Wiki,
+and some new reference pages have been written to cover the analog array and
+long string input and output record types plus the printf record type, none of
+which were previously documented. The wiki reference pages covering the fields
+common to all, input, and output record types have also been added, thanks to
+Rolf Keitel. The POD conversion scripts have also been improved and they now
+properly support linking to subsections in a different document, although the
+POD changes to add the cross-links that appeared in the original wiki pages
+still needs to be done in most cases.
+
+### Fix build issues with newer MinGW versions
+
+The `clock_gettime()` routine is no longer used under MinGW since newer versions
+don't provide it any more.
+
+### Fix race for port in RSRV when multiple IOCs start simultaneously
+
+If multiple IOCs were started at the same time, by systemd say, they could race
+to obtain the Channel Access TCP port number 5064. This issue has been fixed.
+

 ## Changes made between 3.15.6 and 3.15.7

--- a/documentation/RecordReference.md
+++ b/documentation/RecordReference.md
@@ -0,0 +1,65 @@
+# Record Reference Documentation
+
+The following documentation for the record types and menus include with Base was
+converted from the old EPICS Wiki pages and updated. This list only includes the
+record types supplied with Base.
+
+* [Fields Common to All Record Types](dbCommonRecord.html)
+* [Fields Common to Input Record Types](dbCommonInputs.html)
+* [Fields Common to Output Record Types](dbCommonOutputs.html)
+
+## Record Types
+
+* [Analog Array Input Record (aai)](aaiRecord.html)
+* [Analog Array Output Record (aao)](aaoRecord.html)
+* [Analog Input Record (ai)](aiRecord.html)
+* [Analog Output Record (ao)](aoRecord.html)
+* [Array Subroutine Record (aSub)](aSubRecord.html)
+* [Binary Input Record (bi)](biRecord.html)
+* [Binary Output Record (bo)](boRecord.html)
+* [Calculation Output Record (calcout)](calcoutRecord.html)
+* [Calculation Record (calc)](calcRecord.html)
+* [Compression Record (compress)](compressRecord.html)
+* [Data Fanout Record (dfanout)](dfanoutRecord.html)
+* [Event Record (event)](eventRecord.html)
+* [Fanout Record (fanout)](fanoutRecord.html)
+* [Histogram Record (histogram)](histogramRecord.html)
+* [Long Input Record (longin)](longinRecord.html)
+* [Long Output Record (longout)](longoutRecord.html)
+* [Long String Input Record (lsi)](lsiRecord.html)
+* [Long String Output Record (lso)](lsoRecord.html)
+* [Multi-Bit Binary Input Direct Record (mbbiDirect)](mbbiDirectRecord.html)
+* [Multi-Bit Binary Input Record (mbbi)](mbbiRecord.html)
+* [Multi-Bit Binary Output Direct Record (mbboDirect)](mbboDirectRecord.html)
+* [Multi-Bit Binary Output Record (mbbo)](mbboRecord.html)
+* [Permissive Record (permissive)](permissiveRecord.html)
+* [Printf Record (prinf)](printfRecord.html)
+* [Select Record (sel)](selRecord.html)
+* [Sequence Record (seq)](seqRecord.html)
+* [State Record (state)](stateRecord.html)
+* [String Input Record (stringin)](stringinRecord.html)
+* [String Output Record (stringout)](stringoutRecord.html)
+* [Sub-Array Record (subArray)](subArrayRecord.html)
+* [Subroutine Record (sub)](subRecord.html)
+* [Waveform Record (waveform)](waveformRecord.html)
+
+## Menu Definitions
+
+* [Alarm Severity Menu](menuAlarmSevr.html)
+* [Alarm Status Menu](menuAlarmStat.html)
+* [Analog Conversions Menu](menuConvert.html)
+* [Field Type Menu](menuFtype.html)
+* [Invalid Value Output Action Menu](menuIvoa.html)
+* [Output Mode Select Menu](menuOmsl.html)
+* [Scan Menu](menuScan.html)
+* [Simulation Mode Menu](menuSimm.html)
+* [Yes/No Menu](menuYesNo.html)
+
+## Corrections and Updates
+
+Corrections to these documents can be submitted as patch files to the EPICS core
+developers, or as merge requests or pull requests to the 3.15 branch of Base.
+The document sources can be found in the `src/std/rec` and `src/ioc/db`
+directories in files with extension `.dbd.pod`. The documentation source format
+is a combination of the EPICS DBD file format with an extended version of Perl's
+POD (plain old documentation); run `perldoc pod` for details of POD.
--- a/documentation/ReleaseChecklist.html
+++ b/documentation/ReleaseChecklist.html
@@ -136,17 +136,17 @@ relevent roles unless the Release Manager designates otherwise:</p>
      <td>Tag the module in Git, using these tag conventions:
        <ul>
          <li>
-            <tt>R3.15.7-pre1</tt>
+            <tt>R3.15.8-pre1</tt>
            &mdash; pre-release tag
            </li>
          <li>
-            <tt>R3.15.7-rc1</tt>
+            <tt>R3.15.8-rc1</tt>
            &mdash; release candidate tag
            </li>
        </ul>
        <blockquote><tt>
          cd base-3.15<br />
-          git tag -m 'ANJ: Tagged for 3.15.7-rc1' R3.15.7-rc1
+          git tag -m 'ANJ: Tagged for 3.15.8-rc1' R3.15.8-rc1
          </tt></blockquote>
        </td>
      </tr>
@@ -158,11 +158,11 @@ relevent roles unless the Release Manager designates otherwise:</p>
        files and directories that are only used for continuous integration:
        <blockquote><tt>
          cd base-3.15<br />
-          git archive --prefix=base-3.15.7-rc1/ --output=base-3.15.7-rc1.tar.gz R3.15.7-rc1 configure documentation LICENSE Makefile README src startup
+          git archive --prefix=base-3.15.8-rc1/ --output=base-3.15.8-rc1.tar.gz R3.15.8-rc1 configure documentation LICENSE Makefile README src startup
          </tt></blockquote>
        Create a GPG signature file of the tarfile as follows:
        <blockquote><tt>
-          gpg --armor --sign --detach-sig base-3.15.7-rc1.tar.gz
+          gpg --armor --sign --detach-sig base-3.15.8-rc1.tar.gz
          </tt></blockquote>
        </td>
      </tr>
@@ -274,7 +274,7 @@ relevent roles unless the Release Manager designates otherwise:</p>
      <td>Tag the module in Git:
        <blockquote><tt>
          cd base-3.15<br />
-          git tag -m 'ANJ: Tagged for 3.15.7' R3.15.7
+          git tag -m 'ANJ: Tagged for 3.15.8' R3.15.8
          </tt></blockquote>
        </td>
      </tr>
@@ -285,11 +285,11 @@ relevent roles unless the Release Manager designates otherwise:</p>
        generates a gzipped tarfile directly from the repository:
        <blockquote><tt>
          cd base-3.15<br />
-          git archive --prefix=base-3.15.7/ --output=base-3.15.7.tar.gz R3.15.7 configure documentation LICENSE Makefile README src startup
+          git archive --prefix=base-3.15.8/ --output=base-3.15.8.tar.gz R3.15.8 configure documentation LICENSE Makefile README src startup
          </tt></blockquote>
        Create a GPG signature file of the tarfile as follows:
        <blockquote><tt>
-          gpg --armor --sign --detach-sig base-3.15.7.tar.gz
+          gpg --armor --sign --detach-sig base-3.15.8.tar.gz
          </tt></blockquote>
        </td>
      </tr>
--- a/src/ca/client/tools/camonitor.c
+++ b/src/ca/client/tools/camonitor.c
@@ -138,7 +138,14 @@ static void connection_handler ( struct connection_handler_args args )
    pv *ppv = ( pv * ) ca_puser ( args.chid );
    if ( args.op == CA_OP_CONN_UP ) {
        nConn++;
-        if (!ppv->onceConnected) {
+
+        if (ppv->onceConnected && ppv->dbfType != ca_field_type(ppv->chid)) {
+            /* Data type has changed. Rebuild connection with new type. */
+            ca_clear_subscription(ppv->evid);
+            ppv->evid = NULL;
+        }
+
+        if (!ppv->evid) {
            ppv->onceConnected = 1;
                                /* Set up pv structure */
                                /* ------------------- */
@@ -169,7 +176,7 @@ static void connection_handler ( struct connection_handler_args args )
                                                eventMask,
                                                event_handler,
                                                (void*)ppv,
-                                                NULL);
+                                                &ppv->evid);
        }
    }
    else if ( args.op == CA_OP_CONN_DOWN ) {
--- a/src/ca/client/tools/tool_lib.h
+++ b/src/ca/client/tools/tool_lib.h
@@ -78,6 +78,7 @@ typedef struct
    epicsTimeStamp tsPreviousS;
    char firstStampPrinted;
    char onceConnected;
+    evid evid;
 } pv;


--- a/src/ioc/db/Makefile
+++ b/src/ioc/db/Makefile
@@ -4,7 +4,7 @@
 # Copyright (c) 2002 The Regents of the University of California, as
 #     Operator of Los Alamos National Laboratory.
 # EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution. 
+# in file LICENSE that is included with this distribution.
 #*************************************************************************

 # This is a Makefile fragment, see src/ioc/Makefile.
@@ -59,6 +59,9 @@ DBDINC += dbCommon

 dbMenusPod = $(notdir $(wildcard ../db/menu*.dbd.pod))
 HTMLS += $(patsubst %.dbd.pod,%.html,$(dbMenusPod))
+HTMLS += dbCommonRecord.html
+HTMLS += dbCommonInput.html
+HTMLS += dbCommonOutput.html

 dbCore_SRCS += dbLock.c
 dbCore_SRCS += dbAccess.c
@@ -91,4 +94,3 @@ dbCore_SRCS += chfPlugin.c
 dbCore_SRCS += dbState.c
 dbCore_SRCS += dbUnitTest.c
 dbCore_SRCS += dbServer.c
-
--- a/src/ioc/db/RULES
+++ b/src/ioc/db/RULES
@@ -6,21 +6,25 @@
 # Copyright (c) 2002 The Regents of the University of California, as
 #     Operator of Los Alamos National Laboratory.
 # EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution. 
+# in file LICENSE that is included with this distribution.
 #*************************************************************************

 # This is a Makefile fragment, see src/ioc/Makefile.

-dbCommon.h$(DEP): $(IOCDIR)/db/dbCommonRecord.dbd $(IOCDIR)/db/RULES
-	@$(RM) $@
-	@$(DBTORECORDTYPEH) -D -I ../db -o $(COMMONDEP_TARGET) $< > $@
+THESE_RULES := $(IOCDIR)/db/RULES

-$(COMMON_DIR)/dbCommon.h: $(IOCDIR)/db/dbCommonRecord.dbd $(IOCDIR)/db/RULES
+dbCommon.h$(DEP): $(COMMON_DIR)/dbCommonRecord.dbd $(THESE_RULES)
+	@$(RM) $@
+	@$(DBTORECORDTYPEH) -D -I ../db  -I $(COMMON_DIR) -o $(COMMONDEP_TARGET) $< > $@
+
+$(COMMON_DIR)/dbCommonRecord.html: ../db/dbCommon.dbd.pod
+
+$(COMMON_DIR)/dbCommon.h: $(COMMON_DIR)/dbCommonRecord.dbd $(THESE_RULES)
 	@$(RM) $(notdir $@)
-	$(DBTORECORDTYPEH) -I ../db -o $(notdir $@) $<
+	$(DBTORECORDTYPEH) -I ../db  -I $(COMMON_DIR) -o $(notdir $@) $<
 	@$(MV) $(notdir $@) $@

-$(COMMON_DIR)/menuGlobal.dbd: $(IOCDIR)/db/Makefile $(IOCDIR)/db/RULES
+$(COMMON_DIR)/menuGlobal.dbd: $(IOCDIR)/db/Makefile $(THESE_RULES)

 # This is a target-specific variable
 $(COMMON_DIR)/menuGlobal.dbd: DBDCAT_COMMAND = \
--- a/src/ioc/db/dbAccess.c
+++ b/src/ioc/db/dbAccess.c
@@ -730,9 +730,18 @@ int dbLoadDatabase(const char *file, const char *path, const char *subs)
 int dbLoadRecords(const char* file, const char* subs)
 {
    int status = dbReadDatabase(&pdbbase, file, 0, subs);
-
-    if (!status && dbLoadRecordsHook)
-        dbLoadRecordsHook(file, subs);
+    switch(status)
+    {
+        case 0:
+            if(dbLoadRecordsHook)
+                dbLoadRecordsHook(file, subs);
+            break;
+        case -2:
+            errlogPrintf("dbLoadRecords: failed to load %s - cannot load records after running iocBuild!\n", file);
+            break;
+        default:
+            errlogPrintf("dbLoadRecords: failed to load %s\n", file);
+    }
    return status;
 }

@@ -898,6 +907,11 @@ long dbGet(DBADDR *paddr, short dbrType,
        } else {
            DBADDR localAddr = *paddr; /* Structure copy */

+            if (pfl->no_elements < 1) {
+                status = S_db_badField;
+                goto done;
+            }
+
            localAddr.field_type = pfl->field_type;
            localAddr.field_size = pfl->field_size;
            localAddr.no_elements = pfl->no_elements;
--- a/src/ioc/db/dbCommon.dbd
+++ b/src/ioc/db/dbCommon.dbd
@@ -1,261 +0,0 @@
-#*************************************************************************
-# Copyright (c) 2007 UChicago Argonne LLC, as Operator of Argonne
-#     National Laboratory.
-# Copyright (c) 2002 The Regents of the University of California, as
-#     Operator of Los Alamos National Laboratory.
-# EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution.
-#*************************************************************************
-	%#include "epicsTypes.h"
-	%#include "link.h"
-	field(NAME,DBF_STRING) {
-		prompt("Record Name")
-		special(SPC_NOMOD)
-		size(61)
-	}
-	field(DESC,DBF_STRING) {
-		prompt("Descriptor")
-		promptgroup("10 - Common")
-		size(41)
-	}
-	field(ASG,DBF_STRING) {
-		prompt("Access Security Group")
-		promptgroup("10 - Common")
-		special(SPC_AS)
-		size(29)
-	}
-	field(SCAN,DBF_MENU) {
-		prompt("Scan Mechanism")
-		promptgroup("20 - Scan")
-		special(SPC_SCAN)
-		interest(1)
-		menu(menuScan)
-	}
-	field(PINI,DBF_MENU) {
-		prompt("Process at iocInit")
-		promptgroup("20 - Scan")
-		interest(1)
-		menu(menuPini)
-	}
-	field(PHAS,DBF_SHORT) {
-		prompt("Scan Phase")
-		promptgroup("20 - Scan")
-		special(SPC_SCAN)
-		interest(1)
-	}
-	field(EVNT,DBF_STRING) {
-		prompt("Event Name")
-		promptgroup("20 - Scan")
-		special(SPC_SCAN)
-		size(40)
-		interest(1)
-	}
-	field(TSE,DBF_SHORT) {
-		prompt("Time Stamp Event")
-		promptgroup("20 - Scan")
-		interest(1)
-	}
-	field(TSEL,DBF_INLINK) {
-		prompt("Time Stamp Link")
-		promptgroup("20 - Scan")
-		interest(1)
-	}
-	field(DTYP,DBF_DEVICE) {
-		prompt("Device Type")
-		promptgroup("10 - Common")
-		interest(1)
-	}
-	field(DISV,DBF_SHORT) {
-		prompt("Disable Value")
-		promptgroup("20 - Scan")
-		initial("1")
-	}
-	field(DISA,DBF_SHORT) {
-		prompt("Disable")
-	}
-	field(SDIS,DBF_INLINK) {
-		prompt("Scanning Disable")
-		promptgroup("20 - Scan")
-		interest(1)
-	}
-	%#include "epicsMutex.h"
-	field(MLOK,DBF_NOACCESS) {
-		prompt("Monitor lock")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("epicsMutexId        mlok")
-	}
-	%#include "ellLib.h"
-	field(MLIS,DBF_NOACCESS) {
-		prompt("Monitor List")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("ELLLIST             mlis")
-	}
-	field(DISP,DBF_UCHAR) {
-		prompt("Disable putField")
-	}
-	field(PROC,DBF_UCHAR) {
-		prompt("Force Processing")
-		pp(TRUE)
-		interest(3)
-	}
-	field(STAT,DBF_MENU) {
-		prompt("Alarm Status")
-		special(SPC_NOMOD)
-		menu(menuAlarmStat)
-		initial("UDF")
-	}
-	field(SEVR,DBF_MENU) {
-		prompt("Alarm Severity")
-		special(SPC_NOMOD)
-		menu(menuAlarmSevr)
-	}
-	field(NSTA,DBF_MENU) {
-		prompt("New Alarm Status")
-		special(SPC_NOMOD)
-		interest(2)
-		menu(menuAlarmStat)
-	}
-	field(NSEV,DBF_MENU) {
-		prompt("New Alarm Severity")
-		special(SPC_NOMOD)
-		interest(2)
-		menu(menuAlarmSevr)
-	}
-	field(ACKS,DBF_MENU) {
-		prompt("Alarm Ack Severity")
-		special(SPC_NOMOD)
-		interest(2)
-		menu(menuAlarmSevr)
-	}
-	field(ACKT,DBF_MENU) {
-		prompt("Alarm Ack Transient")
-		promptgroup("70 - Alarm")
-		special(SPC_NOMOD)
-		interest(2)
-		menu(menuYesNo)
-		initial("YES")
-	}
-	field(DISS,DBF_MENU) {
-		prompt("Disable Alarm Sevrty")
-		promptgroup("70 - Alarm")
-		interest(1)
-		menu(menuAlarmSevr)
-	}
-	field(LCNT,DBF_UCHAR) {
-		prompt("Lock Count")
-		special(SPC_NOMOD)
-		interest(2)
-	}
-	field(PACT,DBF_UCHAR) {
-		prompt("Record active")
-		special(SPC_NOMOD)
-		interest(1)
-	}
-	field(PUTF,DBF_UCHAR) {
-		prompt("dbPutField process")
-		special(SPC_NOMOD)
-		interest(1)
-	}
-	field(RPRO,DBF_UCHAR) {
-		prompt("Reprocess ")
-		special(SPC_NOMOD)
-		interest(1)
-	}
-	field(ASP,DBF_NOACCESS) {
-		prompt("Access Security Pvt")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("struct asgMember    *asp")
-	}
-	field(PPN,DBF_NOACCESS) {
-		prompt("pprocessNotify")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("struct processNotify *ppn")
-	}
-	field(PPNR,DBF_NOACCESS) {
-		prompt("pprocessNotifyRecord")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("struct processNotifyRecord *ppnr")
-	}
-	field(SPVT,DBF_NOACCESS) {
-		prompt("Scan Private")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("struct scan_element *spvt")
-	}
-	field(RSET,DBF_NOACCESS) {
-		prompt("Address of RSET")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("struct rset         *rset")
-	}
-	field(DSET,DBF_NOACCESS) {
-		prompt("DSET address")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("struct dset         *dset")
-	}
-	field(DPVT,DBF_NOACCESS) {
-		prompt("Device Private")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("void                *dpvt")
-	}
-	field(RDES,DBF_NOACCESS) {
-		prompt("Address of dbRecordType")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("struct dbRecordType *rdes")
-	}
-	field(LSET,DBF_NOACCESS) {
-		prompt("Lock Set")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("struct lockRecord   *lset")
-	}
-	field(PRIO,DBF_MENU) {
-		prompt("Scheduling Priority")
-		promptgroup("20 - Scan")
-		special(SPC_SCAN)
-		interest(1)
-		menu(menuPriority)
-	}
-	field(TPRO,DBF_UCHAR) {
-		prompt("Trace Processing")
-	}
-	field(BKPT,DBF_NOACCESS) {
-		prompt("Break Point")
-		special(SPC_NOMOD)
-		interest(1)
-		extra("char                bkpt")
-	}
-	field(UDF,DBF_UCHAR) {
-		prompt("Undefined")
-		promptgroup("10 - Common")
-		pp(TRUE)
-		interest(1)
-		initial("1")
-	}
-	field(UDFS,DBF_MENU) {
-		prompt("Undefined Alarm Sevrty")
-		promptgroup("70 - Alarm")
-		interest(1)
-		menu(menuAlarmSevr)
-		initial("INVALID")
-	}
-	%#include "epicsTime.h"
-	field(TIME,DBF_NOACCESS) {
-		prompt("Time")
-		special(SPC_NOMOD)
-		interest(2)
-		extra("epicsTimeStamp      time")
-	}
-	field(FLNK,DBF_FWDLINK) {
-		prompt("Forward Process Link")
-		promptgroup("20 - Scan")
-		interest(1)
-	}
--- a/src/ioc/db/dbCommon.dbd.pod
+++ b/src/ioc/db/dbCommon.dbd.pod
@@ -0,0 +1,514 @@
+#*************************************************************************
+# Copyright (c) 2007 UChicago Argonne LLC, as Operator of Argonne
+#     National Laboratory.
+# Copyright (c) 2002 The Regents of the University of California, as
+#     Operator of Los Alamos National Laboratory.
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution.
+#*************************************************************************
+
+=head3 Operator Display Parameters
+
+The B<NAME> field contains the record name which must be unique within an
+EPICS Channel Access name space. The name is supplied by the application
+developer and is the means of identifying a specific record. The name has a
+maximum length of 60 characters and should use only this limited set of
+characters:
+
+ a-z A-Z 0-9 _ - : [ ] < > ;
+
+The B<DESC> field may be set to provide a meaningful description of the
+record's purpose. Maximum length is 40 characters.
+
+=fields NAME, DESC
+
+=cut
+
+	%#include "epicsTypes.h"
+	%#include "link.h"
+	field(NAME,DBF_STRING) {
+		prompt("Record Name")
+		special(SPC_NOMOD)
+		size(61)
+	}
+	field(DESC,DBF_STRING) {
+		prompt("Descriptor")
+		promptgroup("10 - Common")
+		size(41)
+	}
+	field(ASG,DBF_STRING) {
+		prompt("Access Security Group")
+		promptgroup("10 - Common")
+		special(SPC_AS)
+		size(29)
+	}
+
+=head3 Scan Fields
+
+These fields contain information related to how and when a record processes. A
+few records have unique fields that also affect how they process. These
+fields, if any, will be listed and explained in the section for each record.
+
+The B<SCAN> field specifies the scanning period for periodic record scans or the
+scan type for non-periodic record scans.  The default set of values for SCAN can
+be found in L<menuScan.dbd|menuScan>.
+
+The choices provided by this menu are:
+
+=over
+
+=item *
+
+C<Passive> for the record scan to be triggered by other records or Channel
+Access
+
+=item *
+
+C<Event> for event-driven scan
+
+=item *
+
+C<I/O Intr> for interrupt-driven scan
+
+=item *
+
+A set of periodic scan intervals
+
+=back
+
+Additional periodic scan rates may be defined for individual IOCs by making a
+local copy of menuScan.dbd and adding more choices as required. Scan rates
+should normally be defined in order, with the fastest rates appearing first.
+Scan periods may now be specified in seconds, minutes, hours or Hertz/Hz, and
+plural time units will also be accepted (seconds are used if no unit is
+mentioned in the choice string). For example the rates given below are all
+valid:
+
+ 1 hour
+ 0.5 hours
+ 15 minutes
+ 3 seconds
+ 1 second
+ 2 Hertz
+
+The B<PINI> field specifies record processing at initialization. If it is set
+to YES during database configuration, the record is processed once at IOC
+initialization (before the normal scan tasks are started).
+
+The B<PHAS> field orders the records within a specific SCAN group. This is not
+meaningful for passive records. All records of a specified phase are processed
+before those with higher phase number. Whenever possible it is better to use
+linked passive records to enforce the order of processing rather than a phase
+number.
+
+The B<EVNT> field specifies an event number. This event number is used if the
+SCAN field is set to C<Event>. All records with scan type C<Event> and the
+same EVNT value will be processed when a call to post_event for EVNT is made.
+The call to post_event is: post_event(short event_number).
+
+The B<PRIO> field specifies the scheduling priority for processing records
+with SCAN=C<I/O Event> and asynchronous record completion tasks.
+
+The B<DISV> field specifies a "disable value". Record processing is
+immediately terminated if the value of this field is equal to the value of the
+DISA field, i.e. the record is disabled. Note that field values of a record
+can be changed by database  put or Channel Access, even if a record is
+disabled.
+
+The B<DISA> field contains the value that is compared with DISV to determine
+if the record is disabled. The value of the DISA field is obtained via SDIS if
+SDIS is a database or channel access link. If SDIS is not a database or
+channel access link, then DISA can be set via dbPutField or dbPutLink.
+
+If the B<PROC> field of a record is written to, the record is processed.
+
+The B<DISS> field defines the record's "disable severity". If this field is
+not NO_ALARM and the record is disabled, the record will be put into alarm
+with this severity and a status of DISABLE_ALARM.
+
+The B<LSET> field contains the lock set to which this record belongs. All
+records linked in any way via input, output, or forward database links belong
+to the same lock set. Lock sets are determined at IOC initialization time, and
+are updated whenever a database link is added, removed or altered.
+
+The B<LCNT> field counts the number of times dbProcess finds the record active
+during successive scans, i.e. PACT is TRUE. If dbProcess finds the record
+active MAX_LOCK times (currently set to 10) it raises a SCAN_ALARM.
+
+The B<PACT> field is TRUE while the record is being processed. For
+asynchronous records PACT can be TRUE from the time record processing is
+started until the asynchronous completion occurs. As long as PACT is TRUE,
+dbProcess will not call the record processing routine. See Application
+Developers Guide for details on usage of PACT.
+
+The B<FLNK> field is a database link to another record (the "target" record).
+Processing a record with a specified FLNK field will force processing of the
+target record, provided the target record's SCAN field is set to C<Passive>.
+
+The B<SPVT> field is for internal use by the scanning system.
+
+=fields SCAN, PINI, PHAS, EVNT, PRIO, DISV, DISA, SDIS, PROC, DISS, LCNT, PACT, FLNK, SPVT
+
+=cut
+
+	field(SCAN,DBF_MENU) {
+		prompt("Scan Mechanism")
+		promptgroup("20 - Scan")
+		special(SPC_SCAN)
+		interest(1)
+		menu(menuScan)
+	}
+	field(PINI,DBF_MENU) {
+		prompt("Process at iocInit")
+		promptgroup("20 - Scan")
+		interest(1)
+		menu(menuPini)
+	}
+	field(PHAS,DBF_SHORT) {
+		prompt("Scan Phase")
+		promptgroup("20 - Scan")
+		special(SPC_SCAN)
+		interest(1)
+	}
+	field(EVNT,DBF_STRING) {
+		prompt("Event Name")
+		promptgroup("20 - Scan")
+		special(SPC_SCAN)
+		size(40)
+		interest(1)
+	}
+	field(TSE,DBF_SHORT) {
+		prompt("Time Stamp Event")
+		promptgroup("20 - Scan")
+		interest(1)
+	}
+	field(TSEL,DBF_INLINK) {
+		prompt("Time Stamp Link")
+		promptgroup("20 - Scan")
+		interest(1)
+	}
+	field(DTYP,DBF_DEVICE) {
+		prompt("Device Type")
+		promptgroup("10 - Common")
+		interest(1)
+	}
+	field(DISV,DBF_SHORT) {
+		prompt("Disable Value")
+		promptgroup("20 - Scan")
+		initial("1")
+	}
+	field(DISA,DBF_SHORT) {
+		prompt("Disable")
+	}
+	field(SDIS,DBF_INLINK) {
+		prompt("Scanning Disable")
+		promptgroup("20 - Scan")
+		interest(1)
+	}
+	%#include "epicsMutex.h"
+	field(MLOK,DBF_NOACCESS) {
+		prompt("Monitor lock")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("epicsMutexId        mlok")
+	}
+	%#include "ellLib.h"
+	field(MLIS,DBF_NOACCESS) {
+		prompt("Monitor List")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("ELLLIST             mlis")
+	}
+	field(DISP,DBF_UCHAR) {
+		prompt("Disable putField")
+	}
+	field(PROC,DBF_UCHAR) {
+		prompt("Force Processing")
+		pp(TRUE)
+		interest(3)
+	}
+
+=head3 Alarm Fields
+
+These fields indicate the status and severity of alarms, or else determine the
+how and when alarms are triggered. Of course, many records have alarm-related
+fields not common to all records. These fields are listed and explained in the
+appropriate section on each record.
+
+The B<STAT> field contains the current alarm status.
+
+The B<SEVR> field contains the current alarm severity.
+
+These two fields are seen outside database access. The B<NSTA> and B<NSEV>
+fields are used by  the database access, record support, and device support
+routines to set new alarm status and severity values. Whenever any software
+component discovers an alarm condition, it uses the following macro function:
+recGblSetSevr(precord,new_status,new_severity) This ensures that the current
+alarm severity is set equal to the highest outstanding alarm. The file alarm.h
+defines all allowed alarm status and severity values.
+
+The B<ACKS> field contains the highest unacknowledged alarm severity.
+
+The B<ACKT> field specifies if it is necessary to acknowledge transient
+alarms.
+
+The B<UDF> indicates if the record's value is B<U>nB<D>eB<F>ined. Typically
+this is caused by a failure in device support, the fact that the record has
+never been processed, or that the VAL field currently contains a NaN (not a
+number). UDF is initialized to TRUE at IOC initialization. Record and device
+support routines which write to the VAL field are responsible for setting UDF.
+
+=fields STAT, SEVR, NSTA, NSEV, ACKS, ACKT, UDF
+
+=cut
+
+	field(STAT,DBF_MENU) {
+		prompt("Alarm Status")
+		special(SPC_NOMOD)
+		menu(menuAlarmStat)
+		initial("UDF")
+	}
+	field(SEVR,DBF_MENU) {
+		prompt("Alarm Severity")
+		special(SPC_NOMOD)
+		menu(menuAlarmSevr)
+	}
+	field(NSTA,DBF_MENU) {
+		prompt("New Alarm Status")
+		special(SPC_NOMOD)
+		interest(2)
+		menu(menuAlarmStat)
+	}
+	field(NSEV,DBF_MENU) {
+		prompt("New Alarm Severity")
+		special(SPC_NOMOD)
+		interest(2)
+		menu(menuAlarmSevr)
+	}
+	field(ACKS,DBF_MENU) {
+		prompt("Alarm Ack Severity")
+		special(SPC_NOMOD)
+		interest(2)
+		menu(menuAlarmSevr)
+	}
+	field(ACKT,DBF_MENU) {
+		prompt("Alarm Ack Transient")
+		promptgroup("70 - Alarm")
+		special(SPC_NOMOD)
+		interest(2)
+		menu(menuYesNo)
+		initial("YES")
+	}
+	field(DISS,DBF_MENU) {
+		prompt("Disable Alarm Sevrty")
+		promptgroup("70 - Alarm")
+		interest(1)
+		menu(menuAlarmSevr)
+	}
+	field(LCNT,DBF_UCHAR) {
+		prompt("Lock Count")
+		special(SPC_NOMOD)
+		interest(2)
+	}
+	field(PACT,DBF_UCHAR) {
+		prompt("Record active")
+		special(SPC_NOMOD)
+		interest(1)
+	}
+	field(PUTF,DBF_UCHAR) {
+		prompt("dbPutField process")
+		special(SPC_NOMOD)
+		interest(1)
+	}
+	field(RPRO,DBF_UCHAR) {
+		prompt("Reprocess ")
+		special(SPC_NOMOD)
+		interest(1)
+	}
+	field(ASP,DBF_NOACCESS) {
+		prompt("Access Security Pvt")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("struct asgMember    *asp")
+	}
+	field(PPN,DBF_NOACCESS) {
+		prompt("pprocessNotify")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("struct processNotify *ppn")
+	}
+	field(PPNR,DBF_NOACCESS) {
+		prompt("pprocessNotifyRecord")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("struct processNotifyRecord *ppnr")
+	}
+	field(SPVT,DBF_NOACCESS) {
+		prompt("Scan Private")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("struct scan_element *spvt")
+	}
+
+=head3 Device Fields
+
+The B<RSET> field contains the address of the Record Support Entry Table. See
+the Application Developers Guide for details on usage.
+
+The B<DSET> field contains the address of Device Support Entry Table. The
+value of this field is determined at IOC initialization time. Record support
+routines use this field to locate their device support routines.
+
+The B<DPVT> field is is for private use of the device support modules.
+
+=fields RSET, DSET, DPVT
+
+=cut
+
+	field(RSET,DBF_NOACCESS) {
+		prompt("Address of RSET")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("struct rset         *rset")
+	}
+	field(DSET,DBF_NOACCESS) {
+		prompt("DSET address")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("struct dset         *dset")
+	}
+	field(DPVT,DBF_NOACCESS) {
+		prompt("Device Private")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("void                *dpvt")
+	}
+	field(RDES,DBF_NOACCESS) {
+		prompt("Address of dbRecordType")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("struct dbRecordType *rdes")
+	}
+	field(LSET,DBF_NOACCESS) {
+		prompt("Lock Set")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("struct lockRecord   *lset")
+	}
+	field(PRIO,DBF_MENU) {
+		prompt("Scheduling Priority")
+		promptgroup("20 - Scan")
+		special(SPC_SCAN)
+		interest(1)
+		menu(menuPriority)
+	}
+
+=head3 Debugging Fields
+
+The B<TPRO> field is used for trace processing. If this field is non-zero a
+message is printed whenever this record is processed, and when any other
+record in the same lock-set is processed by a database link from this record.
+
+The B<BKPT> field indicates if there is a breakpoint set at this record. This
+supports setting a debug breakpoint in the record processing. STEP through
+database processing can be supported using this.
+
+=fields TPRO, BKPT
+
+
+=head3 Miscellaneous Fields
+
+The B<ASG> field contains a character string value defining the access
+security group for this record. If left empty, the record is placed in group
+DEFAULT.
+
+The B<ASP> field is a field for private use of the access security system.
+
+The B<DISP> field controls dbPutFields to this record which are normally
+issued by channel access. If the field is set to TRUE all dbPutFields
+directed to this record are ignored except to the field DISP itself.
+
+The B<DTYP> field specifies the device type for the record. Each record type
+has its own set of device support routines which are specified in
+devSup.ASCII. If a record type does not have any associated device support,
+DTYP and DSET are meaningless.
+
+The B<MLOK> field contains the monitor lock. The lock used by the monitor
+routines when the monitor list is being used. The list is locked whenever
+monitors are being scheduled, invoked, or when monitors are being added to or
+removed from the list. This field is accessed only by the dbEvent routines.
+
+The B<MLIS> field is the head of the list of monitors connected to this
+record. Each record support module is responsible for triggering monitors for
+any fields that change as a result of record processing. Monitors are present
+if mlis count is greater than zero. The call to trigger monitors is:
+db_post_event(precord,&data,mask), where "mask" is some combination of
+DBE_ALARM, DBE_VALUE, and DBE_LOG.
+
+The B<PPN> field contains the address of a putNotify callback.
+
+The B<PPNR> field contains the next record for PutNotify.
+
+The B<PUTF> field is set to TRUE if dbPutField caused the current record
+processing.
+
+The B<RDES> field contains the address of dbRecordType
+
+The B<RPRO> field specifies a reprocessing of the record when current
+processing completes.
+
+The B<TIME> field contains the time when this record was last processed in
+standard format.
+
+The B<TSE> field indicates the mechanism to use to get the time stamp. '0' -
+call get time as before '-1' - call the time stamp driver and use the best
+source available. '-2' - the device support provides the time stamp from the
+hardware. Values between 1-255 request the time of the last occurance of a
+generalTime event.
+
+The B<TSEL> field contains an input link for obtaining the time stamp. If this
+link references the .TIME field of a record then the time stamp of the
+referenced record becomes the time stamp for this record as well. In this
+case, an internal flag is set and ".TIME" is then overwritten by ".VAL". If
+any other field is referenced, the field value is read and stored in the .TSE
+field which is then used to acquire a timestamp.
+
+=fields ASG, ASP, DISP, DTYP, MLOK, MLIS, PPN, PPNR, PUTF, RDES, RPRO, TIME, TSE, TSEL
+
+=cut
+
+	field(TPRO,DBF_UCHAR) {
+		prompt("Trace Processing")
+	}
+	field(BKPT,DBF_NOACCESS) {
+		prompt("Break Point")
+		special(SPC_NOMOD)
+		interest(1)
+		extra("char                bkpt")
+	}
+	field(UDF,DBF_UCHAR) {
+		prompt("Undefined")
+		promptgroup("10 - Common")
+		pp(TRUE)
+		interest(1)
+		initial("1")
+	}
+	field(UDFS,DBF_MENU) {
+		prompt("Undefined Alarm Sevrty")
+		promptgroup("70 - Alarm")
+		interest(1)
+		menu(menuAlarmSevr)
+		initial("INVALID")
+	}
+	%#include "epicsTime.h"
+	field(TIME,DBF_NOACCESS) {
+		prompt("Time")
+		special(SPC_NOMOD)
+		interest(2)
+		extra("epicsTimeStamp      time")
+	}
+	field(FLNK,DBF_FWDLINK) {
+		prompt("Forward Process Link")
+		promptgroup("20 - Scan")
+		interest(1)
+	}
--- a/src/ioc/db/dbCommonInput.pod
+++ b/src/ioc/db/dbCommonInput.pod
@@ -0,0 +1,181 @@
+#*************************************************************************
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution.
+#*************************************************************************
+
+=head1 Fields Common to Input Record Types
+
+This section describes fields that are found in many input record types.
+These fields usually have the same meaning whenever they are used.
+
+See also L<Fields Common to All Record Types|dbCommonRecord> and L<Fields Common
+to Output Record Types|dbCommonOutput>.
+
+=head3 Input and Value Fields
+
+The B<INP> field specifies an input link. It is used by the device support
+routines to obtain input. For soft analog records it can be a constant, a
+database link, or a channel access link.
+
+The B<DTYP> field specifies the name of the device support module that will
+input values. Each record type has its own set of device support routines. If
+a record type does not have any associated device support, DTYP is
+meaningless.
+
+The B<RVAL> field contains - whenever possible - the raw data value exactly as
+it is obtained from the hardware or from the associated device driver and
+before it undergoes any conversions. The Soft Channel device support module
+reads values directly into VAL, bypassing this field.
+
+The B<VAL> field contains the record's final value, after any needed
+conversions have been performed.
+
+=head3 Device Input
+
+A device input routine normally returns one of the following values to its
+associated record support routine:
+
+=over
+
+=item *
+
+0: Success and convert. The input value is in RVAL. The record support module
+will compute VAL from RVAL.
+
+=item *
+
+2: Success, but don't convert. The device support module can specify this
+value if it does not want any conversions. It might do this for two reasons:
+
+=over
+
+=item *
+
+A hardware error is detected (in this case, it should also raise an alarm
+condition).
+
+=item *
+
+The device support routine reads values directly into the VAL field and then
+sets UDF to FALSE. For some record types the device support routine may have to
+do other record-specific processing as well such as applying a smoothing filter
+to the engineering units value.
+
+=back
+
+=back
+
+=head3 Device Support for Soft Records
+
+In most cases, two soft output device support modules are provided: Soft Channel
+and Raw Soft Channel. Both allow INP to be a constant, a database link, or a
+channel access link. The Soft Channel device support module reads input directly
+into the VAL field and specifies that no value conversion should be performed.
+This allows the record to store values in the data type of its VAL field. Note
+that for Soft Channel input, the RVAL field is not used. The Raw Soft Channel
+support module reads input into RVAL and indicates that any specified unit
+conversions be performed.
+
+The device support read routine normally calls C<dbGetLink()> which
+fetches a value from the link.
+
+If a value was returned by the link the UDF field is set to FALSE. The device
+support read routine normally returns the status from C<dbGetLink()>.
+
+
+=head3 Input Simulation Fields
+
+The B<SIMM> field controls simulation mode. It has either the value YES or NO.
+By setting this field to YES, the record can be switched into simulation mode
+of operation. While in simulation mode, input will be obtained from SIOL
+instead of INP.
+
+Ths B<SIML> specifies the simulation mode location. This field can be a
+constant, a database link, or a channel access link. If SIML is a database or
+channel access link, then SIMM is read from SIML. If SIML is a constant link
+then SIMM is initialized with the constant value but can be changed via
+dbPuts.
+
+Ths B<SVAL> field contains the simulation value. This is the record's input
+value, in engineering units, when the record is switched into simulation mode,
+i.e. when SIMM is set to YES.
+
+The B<SIOL> field is a link that can be used to fetch the simulation value. The
+link can be a constant, a database link, or a channel access link. If SIOL is a
+database or channel access link, then SVAL is read from SIOL. If SIOL is a
+constant link then SVAL is initialized with the constant value but can be
+changed via dbPuts.
+
+The B<SIMS> field specifies the simulation mode alarm severity. When this
+field is set to a value other than NO_ALARM and the record is in simulation
+mode, it will be put into alarm with this severity and a status of SIMM.
+
+=head3 Simulation Mode for Input Records
+
+An input record can be switched into simulation mode of operation by setting
+the value of SIMM to YES or RAW. During simulation, the record will be put
+into alarm with a severity of SIMS and a status of SIMM_ALARM. While in
+simulation mode, input values will be read from SIOL instead of INP:
+
+           -- (SIMM = NO?) INP (if supported and directed by device support, -> RVAL -- convert -> VAL), (else -> VAL)
+         /
+
+ SIML -> SIMM
+
+         \
+          -- (SIMM = YES?) SIOL -> SVAL -> VAL
+           \
+             -- (SIMM = RAW?) SIOL -> SVAL -> RVAL -- convert -> VAL
+
+A record can be switched into simulation mode of operation by setting the
+value of SIMM to YES. During simulation, the record will be put into alarm
+with a severity of SIMS and a status of SIMM_ALARM. While in simulation mode,
+input values, in engineering units, will be obtained from SIOL instead of INP.
+Also, while the record is in simulation mode, there will be no raw value
+conversion and no calls to device support when the record is processed.
+
+Normally input records contain a private readValue() routine which performs
+the following steps:
+
+=over
+
+=item *
+
+If PACT is TRUE, the device support read routine is called, status is set to
+its return code, and readValue returns.
+
+=item *
+
+Call C<dbGetLink()> to get a new value for SIMM from SIML.
+
+=item *
+
+Check value of SIMM.
+
+=item *
+
+If SIMM is NO, then call the device support read routine, set status to its
+return code, and return.
+
+=item *
+
+If SIMM is YES, then call C<dbGetLink()> to read the input value from SIOL
+into SVAL. If success, then set VAL to SVAL and UDF to FALSE and set status to
+2 (don't convert) if input record supports conversion. If SIMS is greater than
+zero, set alarm status to SIMM and severity to SIMS. Set status to the return
+code from recGblGetLinkValue and return.
+
+=item *
+
+If SIMM is RAW, then call C<dbGetLink()> to read the input value from SIOL
+into SVAL. If success, then set RVAL to SVAL and UDF to FALSE and set status
+to 0 (convert) if input record supports conversion. If SIMS is greater than
+zero, set alarm status to SIMM and severity to SIMS. Set status to the return
+code from recGblGetLinkValue and return.
+
+=item *
+
+If SIMM is not YES, NO or RAW, a SOFT alarm with a severity of INVALID is
+raised, and return status is set to -1.
+
+=back
--- a/src/ioc/db/dbCommonOutput.pod
+++ b/src/ioc/db/dbCommonOutput.pod
@@ -0,0 +1,211 @@
+#*************************************************************************
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution.
+#*************************************************************************
+
+=head1 Fields Common to Output Record Types
+
+This section describes fields that are found in many output record types.
+These fields usually have the same meaning whenever they are used.
+
+See also L<Fields Common to All Record Types|dbCommonRecord> and L<Fields Common to
+Input Records|dbCommonInput>.
+
+=head3 Output and Value Fields
+
+The B<OUT> field specifies an output link. It is used by the device support
+routines to decide where to send output. For soft records, it can be a
+constant, a database link, or a channel access link. If the link is a
+constant, the result is no output.
+
+The B<DTYP> field specifies the name of the device support module that will
+input values. Each record type has its own set of device support routines. If
+a record type does not have any associated device support, DTYP is
+meaningless.
+
+The B<VAL> field contains the desired value before any conversions to raw
+output have been performed.
+
+The B<OVAL> field is used to decide when to invoke monitors. Archive and value
+change monitors are invoked if OVAL is not equal to VAL. If a record type
+needs to make adjustments, OVAL is used to enforce the maximum rate of change
+limit before converting the desired value to a raw value.
+
+The B<RVAL> field contains - whenever possible -  the actual value sent to the
+hardware itself or to the associated device driver.
+
+The B<RBV> field contains - whenever possible - the actual read back value
+obtained from the hardware itself or from the associated device driver.
+
+
+=head3 Device Support for Soft Records
+
+Normally two soft output device support modules are provided, Soft Channel and
+and Raw Soft Channel. Both write a value through the output link OUT.
+The Soft Channel module writes output from the value associated with OVAL or
+VAL (if OVAL does not exist). The Raw Soft Channel support module writes the
+value associated with the RVAL field after conversion has been performed.
+
+The device support write routine normally calls C<dbPutLink()> which writes a
+value through the OUT link, and returns the status from that call.
+
+
+=head3 Input and Mode Select Fields
+
+The B<DOL> field is a link from which the desired output value can be fetched.
+DOL can be a constant, a database link, or a channel access link. If DOL is a
+database or channel access link and OMSL is closed_loop, then VAL is obtained
+from DOL.
+
+The B<OMSL> field selects the output mode. This field has either the value
+C<supervisory> or C<closed_loop>. DOL is used to fetch VAL only if OMSL has the
+value C<closed_loop>. By setting this field a record can be switched between
+supervisory and closed loop mode of operation. While in closed loop mode, the
+VAL field cannot be set via dbPuts.
+
+=head3 Output Mode Selection
+
+The fields DOL and OMSL are used to allow the output record to be part of a
+closed loop control algorithm. OMSL is meaningful only if DOL refers to a
+database or channel access link. It can have the values C<supervisory> or
+C<closed_loop>. If the mode is C<supervisory>, then nothing is done to VAL. If
+the mode is C<closed_loop> and the record type does not contain an OIF field,
+then each time the record is processed, VAL is set equal to the value obtained
+from the location referenced by DOL. If the mode is C<closed_loop> in record
+types with an OIF field and OIF is Full, VAL is set equal to the value obtained
+from the location referenced by DOL; if OIF is Incremental VAL is incremented by
+the value obtained from DOL.
+
+=head3 Invalid Output Action Fields
+
+The B<IVOA> field specifies the output action for the case that the record is
+put into an INVALID alarm severity. IVOA can be one of the following actions:
+
+=over
+
+=item *
+
+C<Continue normally>
+
+=item *
+
+C<Don't drive outputs>
+
+=item *
+
+C<Set output to IVOV>
+
+=back
+
+The B<IVOV> field contains the value for the IVOA action C<Set output to IVOV>
+in engineering units. If a new severity has been set to INVALID  and IVOA is
+C<Set output to IVOV>, then VAL is set to IVOV and converted to RVAL before
+device support is called.
+
+=head3 Invalid Alarm Output Action
+
+Whenever an output record is put into INVALID alarm severity, IVOA specifies
+an action to take. The record support process routine for each output record
+contains code which performs the following steps.
+
+=over
+
+=item *
+
+If new severity is less than INVALID, then call C<writeValue()>:
+
+=item *
+
+Else do the following:
+
+=over
+
+=item *
+
+If IVOA is C<Continue normally> then call C<writeValue()>.
+
+=item *
+
+If IVOA is C<Don't drive outputs> then do not write output.
+
+=item *
+
+If IVOA is C<Set output to IVOV> then set VAL to IVOV, call C<convert()> if
+necessary, and then call C<writeValue()>.
+
+=item *
+
+If IVOA not one of the above, an error message is generated.
+
+=back
+
+=back
+
+
+=head3 Simulation Fields
+
+The B<SIMM> field controls simulation mode. It has either the value YES or NO.
+By setting this field to YES, the record can be switched into simulation mode
+of operation. While in simulation mode, output will be forwarded through SIOL
+instead of OUT.
+
+Ths B<SIML> specifies the simulation mode location. This field can be a
+constant, a database link, or a channel access link. If SIML is a database or
+channel access link, then SIMM is read from SIML. If SIML is a constant link
+then SIMM is initialized with the constant value but can be changed via
+dbPuts.
+
+The B<SIOL> field is a link that the output value is written to when the record
+is in simulation mode.
+
+The B<SIMS> field specifies the simulation mode alarm severity. When this
+field is set to a value other than NO_ALARM and the record is in simulation
+mode, it will be put into alarm with this severity and a status of SIMM.
+
+=head3 Simulation Mode
+
+An output record can be switched into simulation mode of operation by setting
+the value of SIMM to YES. During simulation, the record will be put into alarm
+with a severity of SIMS and a status of SIMM_ALARM. While in simulation mode,
+output values, in engineering units, will be written to SIOL instead of OUT.
+However, the output values are never converted. Also, while the record is in
+simulation mode, there will be no calls to device support during record
+processing.
+
+Normally output records contain a private C<writeValue()> routine which performs
+the following steps:
+
+=over
+
+=item *
+
+If PACT is TRUE, the device support write routine is called, status is set to
+its return code, and readValue returns.
+
+=item *
+
+Call C<dbGetLink()> to get a new value for SIMM if SIML is a DB_LINK or a
+CA_LINK.
+
+=item *
+
+Check value of SIMM.
+
+=item *
+
+If SIMM is NO, then call the device support write routine, set status to its
+return code, and return.
+
+=item *
+
+If SIMM is YES, then call C<dbPutLink()> to write the output value from VAL or
+OVAL to SIOL. Set alarm status to SIMM and severity to SIMS, if SIMS is
+greater than zero. Set status to the return code from C<dbPutLink()> and
+return.
+
+=item *
+
+If SIMM not one of the above, a SOFT alarm with a severity of INVALID is
+raised, and return status is set to -1.
+
+=back
--- a/src/ioc/db/dbCommonRecord.dbd
+++ b/src/ioc/db/dbCommonRecord.dbd
@@ -1,12 +0,0 @@
-#*************************************************************************
-# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
-#     National Laboratory.
-# Copyright (c) 2002 The Regents of the University of California, as
-#     Operator of Los Alamos National Laboratory.
-# EPICS BASE Versions 3.13.7
-# and higher are distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution. 
-#*************************************************************************
-recordtype(dbCommon) {
-	include "dbCommon.dbd"
-}
--- a/src/ioc/db/dbCommonRecord.dbd.pod
+++ b/src/ioc/db/dbCommonRecord.dbd.pod
@@ -0,0 +1,20 @@
+#*************************************************************************
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution.
+#*************************************************************************
+
+=head1 Fields Common to All Record Types
+
+This section contains a description of the fields that are common to all record
+types. These fields are defined in dbCommon.dbd.
+
+See also L<Fields Common to Input Record Types|dbCommonInput> and L<Fields
+Common to Output Record Types|dbCommonOutput>.
+
+=recordtype dbCommon
+
+=cut
+
+recordtype(dbCommon) {
+    include "dbCommon.dbd.pod"
+}
--- a/src/ioc/dbStatic/dbLexRoutines.c
+++ b/src/ioc/dbStatic/dbLexRoutines.c
@@ -35,6 +35,7 @@
 #include "epicsExport.h"
 #include "link.h"
 #include "special.h"
+#include "iocInit.h"



@@ -215,6 +216,9 @@ static long dbReadCOM(DBBASE **ppdbbase,const char *filename, FILE *fp,
    char	*penv;
    char	**macPairs;
    
+    if(getIocState() != iocVoid)
+        return -2;
+
    if(*ppdbbase == 0) *ppdbbase = dbAllocBase();
    pdbbase = *ppdbbase;
    if(path && strlen(path)>0) {
--- a/src/ioc/misc/dbCore.dbd
+++ b/src/ioc/misc/dbCore.dbd
@@ -25,3 +25,6 @@ variable(callbackParallelThreadsDefault,int)

 # Real-time operation
 variable(dbThreadRealtimeLock,int)
+
+# show logClient network activity
+variable(logClientDebug,int)
--- a/src/ioc/misc/iocInit.c
+++ b/src/ioc/misc/iocInit.c
@@ -70,9 +70,7 @@
 #include "registryRecordType.h"
 #include "rsrv.h"

-static enum {
-    iocVirgin, iocBuilding, iocBuilt, iocRunning, iocPaused, iocStopped
-} iocState = iocVirgin;
+static enum iocStateEnum iocState = iocVoid;
 static enum {
    buildRSRV, buildIsolated
 } iocBuildMode;
@@ -91,6 +89,11 @@ static void exitDatabase(void *dummy);
 int dbThreadRealtimeLock = 1;
 epicsExportAddress(int, dbThreadRealtimeLock);

+enum iocStateEnum getIocState(void)
+{
+    return iocState;
+}
+
 /*
 *  Initialize EPICS on the IOC.
 */
@@ -101,7 +104,7 @@ int iocInit(void)

 static int iocBuild_1(void)
 {
-    if (iocState != iocVirgin && iocState != iocStopped) {
+    if (iocState != iocVoid) {
        errlogPrintf("iocBuild: IOC can only be initialized from uninitialized or stopped state\n");
        return -1;
    }
@@ -701,7 +704,7 @@ static void doFreeRecord(dbRecordType *pdbRecordType, dbCommon *precord,

 int iocShutdown(void)
 {
-    if (iocState == iocVirgin || iocState == iocStopped) return 0;
+    if (iocState == iocVoid) return 0;
    iterateRecords(doCloseLinks, NULL);
    if (iocBuildMode==buildIsolated) {
        /* stop and "join" threads */
@@ -720,7 +723,7 @@ int iocShutdown(void)
        dbProcessNotifyExit();
        iocshFree();
    }
-    iocState = iocStopped;
+    iocState = iocVoid;
    iocBuildMode = buildRSRV;
    return 0;
 }
--- a/src/ioc/misc/iocInit.h
+++ b/src/ioc/misc/iocInit.h
@@ -13,10 +13,15 @@

 #include "shareLib.h"

+enum iocStateEnum {
+    iocVoid, iocBuilding, iocBuilt, iocRunning, iocPaused
+};
+
 #ifdef __cplusplus
 extern "C" {
 #endif

+epicsShareFunc enum iocStateEnum getIocState(void);
 epicsShareFunc int iocInit(void);
 epicsShareFunc int iocBuild(void);
 epicsShareFunc int iocBuildIsolated(void);
--- a/src/ioc/rsrv/caservertask.c
+++ b/src/ioc/rsrv/caservertask.c
@@ -66,17 +66,6 @@ static void req_server (void *pParm)

    IOC_sock = conf->tcp;

-    /* listen and accept new connections */
-    if ( listen ( IOC_sock, 20 ) < 0 ) {
-        char sockErrBuf[64];
-        epicsSocketConvertErrnoToString (
-            sockErrBuf, sizeof ( sockErrBuf ) );
-        errlogPrintf ( "CAS: Listen error: %s\n",
-            sockErrBuf );
-        epicsSocketDestroy (IOC_sock);
-        epicsThreadSuspendSelf ();
-    }
-
    epicsEventSignal(castcp_startStopEvent);

    while (TRUE) {
@@ -194,7 +183,7 @@ SOCKET* rsrv_grab_tcp(unsigned short *port)

            epicsSocketEnableAddressReuseDuringTimeWaitState ( tcpsock );

-            if(bind(tcpsock, &scratch.sa, sizeof(scratch))==0) {
+            if(bind(tcpsock, &scratch.sa, sizeof(scratch))==0 && listen(tcpsock, 20)==0) {
                if(scratch.ia.sin_port==0) {
                    /* use first socket to pick a random port */
                    osiSocklen_t alen = sizeof(ifaceAddr);
--- a/src/libCom/calc/calcPerform.c
+++ b/src/libCom/calc/calcPerform.c
@@ -25,6 +25,7 @@
 #include "postfix.h"
 #include "postfixPvt.h"

+
 static double calcRandom(void);
 static int cond_search(const char **ppinst, int match);

@@ -48,7 +49,6 @@ epicsShareFunc long
    double *ptop;			/* stack pointer */
    double top; 			/* value from top of stack */
    epicsInt32 itop;			/* integer from top of stack */
-    epicsUInt32 utop;			/* unsigned integer from top of stack */
    int op;
    int nargs;

@@ -287,45 +287,60 @@ epicsShareFunc long
 	    *ptop = ! *ptop;
 	    break;

-        /* For bitwise operations on values with bit 31 set, double values
-         * must first be cast to unsigned to correctly set that bit; the
-         * double value must be negative in that case. The result must be
-         * cast to a signed integer before converting to the double result.
+        /* Be VERY careful converting double to int in case bit 31 is set!
+         * Out-of-range errors give very different results on different sytems.
+         * Convert negative doubles to signed and positive doubles to unsigned
+         * first to avoid overflows if bit 32 is set.
+         * The result is always signed, values with bit 31 set are negative
+         * to avoid problems when writing the value to signed integer fields
+         * like longout.VAL or ao.RVAL. However unsigned fields may give
+         * problems on some architectures. (Fewer than giving problems with
+         * signed integer. Maybe the conversion functions should handle
+         * overflows better.)
         */
+        #define d2i(x) ((x)<0?(epicsInt32)(x):(epicsInt32)(epicsUInt32)(x))
+        #define d2ui(x) ((x)<0?(epicsUInt32)(epicsInt32)(x):(epicsUInt32)(x))

 	case BIT_OR:
-	    utop = *ptop--;
-	    *ptop = (epicsInt32) ((epicsUInt32) *ptop | utop);
+	    top = *ptop--;
+	    *ptop = (double)(d2i(*ptop) | d2i(top));
 	    break;

 	case BIT_AND:
-	    utop = *ptop--;
-	    *ptop = (epicsInt32) ((epicsUInt32) *ptop & utop);
+	    top = *ptop--;
+	    *ptop = (double)(d2i(*ptop) & d2i(top));
 	    break;

 	case BIT_EXCL_OR:
-	    utop = *ptop--;
-	    *ptop = (epicsInt32) ((epicsUInt32) *ptop ^ utop);
+	    top = *ptop--;
+	    *ptop = (double)(d2i(*ptop) ^ d2i(top));
 	    break;

 	case BIT_NOT:
-	    utop = *ptop;
-	    *ptop = (epicsInt32) ~utop;
+	    *ptop = (double)~d2i(*ptop);
 	    break;

-        /* The shift operators use signed integers, so a right-shift will
-         * extend the sign bit into the left-hand end of the value. The
-         * double-casting through unsigned here is important, see above.
+        /* In C the shift operators decide on an arithmetic or logical shift
+         * based on whether the integer is signed or unsigned.
+         * With signed integers, a right-shift is arithmetic and will
+         * extend the sign bit into the left-hand end of the value. When used
+         * with unsigned values a logical shift is performed. The
+         * double-casting through signed/unsigned here is important, see above.
         */

-	case RIGHT_SHIFT:
-	    utop = *ptop--;
-	    *ptop = ((epicsInt32) (epicsUInt32) *ptop) >> (utop & 31);
+	case RIGHT_SHIFT_ARITH:
+	    top = *ptop--;
+	    *ptop = (double)(d2i(*ptop) >> (d2i(top) & 31));
 	    break;

-	case LEFT_SHIFT:
-	    utop = *ptop--;
-	    *ptop = ((epicsInt32) (epicsUInt32) *ptop) << (utop & 31);
+	case LEFT_SHIFT_ARITH:
+	    top = *ptop--;
+	    *ptop = (double)(d2i(*ptop) << (d2i(top) & 31));
+	    break;
+
+	case RIGHT_SHIFT_LOGIC:
+	    top = *ptop--;
+	    *ptop = (double)(d2ui(*ptop) >> (d2ui(top) & 31u));
 	    break;

 	case NOT_EQ:
@@ -382,11 +397,11 @@ epicsShareFunc long
    *presult = *ptop;
    return 0;
 }
+
 #if defined(_WIN32) && defined(_M_X64) && !defined(_MINGW)
 #  pragma optimize("", on)
 #endif

-
 epicsShareFunc long
 calcArgUsage(const char *pinst, unsigned long *pinputs, unsigned long *pstores)
 {
--- a/src/libCom/calc/postfix.c
+++ b/src/libCom/calc/postfix.c
@@ -148,13 +148,14 @@ static const ELEMENT operators[] = {
 {":=",		0, 0,	-1,	STORE_OPERATOR, STORE_A},
 {";",		0, 0,	0,	EXPR_TERMINATOR,NOT_GENERATED},
 {"<",		3, 3,	-1,	BINARY_OPERATOR,LESS_THAN},
-{"<<",		2, 2,	-1,	BINARY_OPERATOR,LEFT_SHIFT},
+{"<<",		2, 2,	-1,	BINARY_OPERATOR,LEFT_SHIFT_ARITH},
 {"<=",		3, 3,	-1,	BINARY_OPERATOR,LESS_OR_EQ},
 {"=",		3, 3,	-1,	BINARY_OPERATOR,EQUAL},
 {"==",		3, 3,	-1,	BINARY_OPERATOR,EQUAL},
 {">",		3, 3,	-1,	BINARY_OPERATOR,GR_THAN},
 {">=",		3, 3,	-1,	BINARY_OPERATOR,GR_OR_EQ},
-{">>",		2, 2,	-1,	BINARY_OPERATOR,RIGHT_SHIFT},
+{">>",		2, 2,	-1,	BINARY_OPERATOR,RIGHT_SHIFT_ARITH},
+{">>>",		2, 2,	-1,	BINARY_OPERATOR,RIGHT_SHIFT_LOGIC},
 {"?",		0, 0,	-1,	CONDITIONAL,	COND_IF},
 {"AND",		2, 2,	-1,	BINARY_OPERATOR,BIT_AND},
 {"OR",		1, 1,	-1,	BINARY_OPERATOR,BIT_OR},
@@ -579,8 +580,9 @@ epicsShareFunc void
 	"BIT_AND",
 	"BIT_EXCL_OR",
 	"BIT_NOT",
-	"RIGHT_SHIFT",
-	"LEFT_SHIFT",
+	"RIGHT_SHIFT_ARITH",
+	"LEFT_SHIFT_ARITH",
+	"RIGHT_SHIFT_LOGIC",
    /* Relationals */
 	"NOT_EQ",
 	"LESS_THAN",
--- a/src/libCom/calc/postfixPvt.h
+++ b/src/libCom/calc/postfixPvt.h
@@ -84,8 +84,9 @@ typedef enum {
 	BIT_AND,
 	BIT_EXCL_OR,
 	BIT_NOT,
-	RIGHT_SHIFT,
-	LEFT_SHIFT,
+	RIGHT_SHIFT_ARITH,
+	LEFT_SHIFT_ARITH,
+	RIGHT_SHIFT_LOGIC,
    /* Relationals */
 	NOT_EQ,
 	LESS_THAN,
--- a/src/libCom/cppStd/Makefile
+++ b/src/libCom/cppStd/Makefile
@@ -9,6 +9,5 @@

 SRC_DIRS += $(LIBCOM)/cppStd
 INC += epicsAlgorithm.h
-INC += epicsExcept.h
 INC += epicsMemory.h

--- a/src/libCom/cppStd/epicsExcept.h
+++ b/src/libCom/cppStd/epicsExcept.h
@@ -1,71 +0,0 @@
-/*************************************************************************\
-* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
-*     National Laboratory.
-* Copyright (c) 2002 The Regents of the University of California, as
-*     Operator of Los Alamos National Laboratory.
-* EPICS BASE Versions 3.13.7
-* and higher are distributed subject to a Software License Agreement found
-* in file LICENSE that is included with this distribution. 
-\*************************************************************************/
-//	Author: Andrew Johnson & Jeff Hill
-//	Date:   December 2000
-
-#ifndef __EPICS_EXCEPT_H__
-#define __EPICS_EXCEPT_H__
-
-#define epicsThrowHere(exc) \
-    throw locationException(exc, __FILE__, __LINE__)
-
-class sourceLocation {
-public: // Functions
-    sourceLocation(const char *fileName, int lineNumber);
-//  sourceLocation(const sourceLocation&);		Copy constructable
-//  sourceLocation& operator=(const sourceLocation&);	Assignable
-
-    const char *fileName() const;
-    int lineNumber() const;
-
-private: // Hide compiler-generated member functions
-    sourceLocation();		// default constructor
-
-private: // Data
-    const char *file;
-    int line;
-};
-
-template <class T>
-class locationException : public T, public sourceLocation {
-public:
-    locationException(const T& exc, const char *fileName, int lineNumber);
-};
-
-
-/* Example:
- *	if (status) epicsThrowHere(std::logic_error("operation failed!"));
- *	try { ... } catch(sourceLocation& where) { ... }
- */
-
-// END OF DECLARATIONS
-
-// INLINE FUNCTIONS
-
-// sourceFileLocation
-inline sourceLocation::sourceLocation (const char *fileName, int lineNumber) :
-    file(fileName), line(lineNumber) {}
-
-inline const char* sourceLocation::fileName () const {
-    return this->file;
-}
-
-inline int sourceLocation::lineNumber () const {
-    return this->line;
-}
-
-// locationException<T>
-template <class T>
-inline locationException<T>::locationException
-    (const char *fileName, int lineNumber, const E& exc) :
-    T(exc), sourceLocation(fileName, lineNumber) {}
-
-
-#endif // __EPICS_EXCEPT_H__
--- a/src/libCom/log/iocLog.c
+++ b/src/libCom/log/iocLog.c
@@ -18,8 +18,10 @@

 #define epicsExportSharedSymbols
 #include "envDefs.h"
+#include "errlog.h"
 #include "logClient.h"
 #include "iocLog.h"
+#include "epicsExit.h"

 int iocLogDisable = 0;

@@ -74,6 +76,24 @@ void epicsShareAPI epicsShareAPI iocLogFlush (void)
    }
 }

+/*
+ * logClientSendMessage ()
+ */
+static void logClientSendMessage ( logClientId id, const char * message )
+{
+    if ( !iocLogDisable ) {
+        logClientSend (id, message);
+    }
+}
+
+/*
+ * iocLogClientDestroy()
+ */
+static void iocLogClientDestroy (logClientId id)
+{
+    errlogRemoveListeners (logClientSendMessage, id);
+}
+
 /*
 *  iocLogClientInit()
 */
@@ -89,6 +109,10 @@ static logClientId iocLogClientInit (void)
        return NULL;
    }
    id = logClientCreate (addr, port);
+    if (id != NULL) {
+        errlogAddListener (logClientSendMessage, id);
+        epicsAtExit (iocLogClientDestroy, id);
+    }
    return id;
 }

@@ -135,3 +159,4 @@ logClientId epicsShareAPI logClientInit (void)
 {
    return iocLogClientInit ();
 }
+
--- a/src/libCom/log/logClient.c
+++ b/src/libCom/log/logClient.c
@@ -21,11 +21,11 @@
 #include <string.h>
 #include <stdio.h>

+#define EPICS_PRIVATE_API
 #define epicsExportSharedSymbols
 #include "dbDefs.h"
 #include "epicsEvent.h"
 #include "iocLog.h"
-#include "errlog.h"
 #include "epicsMutex.h"
 #include "epicsThread.h"
 #include "epicsTime.h"
@@ -33,9 +33,13 @@
 #include "epicsAssert.h"
 #include "epicsExit.h"
 #include "epicsSignal.h"
+#include "epicsExport.h"

 #include "logClient.h"

+int logClientDebug = 0;
+epicsExportAddress (int, logClientDebug);
+
 typedef struct {
    char                msgBuf[0x4000];
    struct sockaddr_in  addr;
@@ -44,8 +48,10 @@ typedef struct {
    SOCKET              sock;
    epicsThreadId       restartThreadId;
    epicsEventId        stateChangeNotify;
+    epicsEventId        shutdownNotify;
    unsigned            connectCount;
    unsigned            nextMsgIndex;
+    unsigned            backlog;
    unsigned            connected;
    unsigned            shutdown;
    unsigned            shutdownConfirm;
@@ -53,7 +59,6 @@ typedef struct {
 } logClient;

 static const double      LOG_RESTART_DELAY = 5.0; /* sec */
-static const double      LOG_SERVER_CREATE_CONNECT_SYNC_TIMEOUT = 5.0; /* sec */
 static const double      LOG_SERVER_SHUTDOWN_TIMEOUT = 30.0; /* sec */

 /*
@@ -66,10 +71,10 @@ static char* logClientPrefix = NULL;
 */
 static void logClientClose ( logClient *pClient )
 {
-#   ifdef DEBUG
+    if (logClientDebug) {
        fprintf (stderr, "log client: lingering for connection close...");
        fflush (stderr);
-#   endif
+    }

    /*
     * mutex on
@@ -84,8 +89,6 @@ static void logClientClose ( logClient *pClient )
        pClient->sock = INVALID_SOCKET;
    }

-    pClient->nextMsgIndex = 0u;
-    memset ( pClient->msgBuf, '\0', sizeof ( pClient->msgBuf ) );
    pClient->connected = 0u;

    /*
@@ -93,9 +96,8 @@ static void logClientClose ( logClient *pClient )
     */
    epicsMutexUnlock (pClient->mutex);

-#   ifdef DEBUG
+    if (logClientDebug)
        fprintf (stderr, "done\n");
-#   endif
 }

 /*
@@ -113,6 +115,7 @@ static void logClientDestroy (logClientId id)
    epicsMutexMustLock ( pClient->mutex );
    pClient->shutdown = 1u;
    epicsMutexUnlock ( pClient->mutex );
+    epicsEventSignal ( pClient->shutdownNotify );

    /* unblock log client thread blocking in send() or connect() */
    interruptInfo =
@@ -154,13 +157,11 @@ static void logClientDestroy (logClientId id)
        return;
    }

-    errlogRemoveListeners ( logClientSendMessage, (void *) pClient );
-
    logClientClose ( pClient );

    epicsMutexDestroy ( pClient->mutex );
-   
    epicsEventDestroy ( pClient->stateChangeNotify );
+    epicsEventDestroy ( pClient->shutdownNotify );

    free ( pClient );
 }
@@ -176,61 +177,26 @@ static void sendMessageChunk(logClient * pClient, const char * message) {
        unsigned msgBufBytesLeft = 
            sizeof ( pClient->msgBuf ) - pClient->nextMsgIndex;

-        if ( strSize > msgBufBytesLeft ) {
-            int status;
-
-            if ( ! pClient->connected ) {
-                break;
-            }
-
-            if ( msgBufBytesLeft > 0u ) {
-                memcpy ( & pClient->msgBuf[pClient->nextMsgIndex],
-                    message, msgBufBytesLeft );
-                pClient->nextMsgIndex += msgBufBytesLeft;
-                strSize -= msgBufBytesLeft;
-                message += msgBufBytesLeft;
-            }
-
-            status = send ( pClient->sock, pClient->msgBuf, 
-                pClient->nextMsgIndex, 0 );
-            if ( status > 0 ) {
-                unsigned nSent = (unsigned) status;
-                if ( nSent < pClient->nextMsgIndex ) {
-                    unsigned newNextMsgIndex = pClient->nextMsgIndex - nSent;
-                    memmove ( pClient->msgBuf, & pClient->msgBuf[nSent], 
-                        newNextMsgIndex );
-                    pClient->nextMsgIndex = newNextMsgIndex;
-                }
-                else {
-                    pClient->nextMsgIndex = 0u;
-                }
-            }
-            else {
-                if ( ! pClient->shutdown ) {
-                    char sockErrBuf[64];
-                    if ( status ) {
-                        epicsSocketConvertErrnoToString ( sockErrBuf, sizeof ( sockErrBuf ) );
-                    }
-                    else {
-                        strcpy ( sockErrBuf, "server initiated disconnect" );
-                    }
-                    fprintf ( stderr, "log client: lost contact with log server at \"%s\" because \"%s\"\n", 
-                        pClient->name, sockErrBuf );
-                }
-                logClientClose ( pClient );
-                break;
-            }
+        if ( msgBufBytesLeft < strSize && pClient->nextMsgIndex != 0u && pClient->connected)
+        {
+            /* buffer is full, thus flush it */
+            logClientFlush ( pClient );
+            msgBufBytesLeft = sizeof ( pClient->msgBuf ) - pClient->nextMsgIndex;
        }
-        else {
-            memcpy ( & pClient->msgBuf[pClient->nextMsgIndex],
-                message, strSize );
-            pClient->nextMsgIndex += strSize;
+        if ( msgBufBytesLeft == 0u ) {
+            fprintf ( stderr, "log client: messages to \"%s\" are lost\n",
+                pClient->name );
            break;
        }
+        if ( msgBufBytesLeft > strSize) msgBufBytesLeft = strSize;
+        memcpy ( & pClient->msgBuf[pClient->nextMsgIndex],
+            message, msgBufBytesLeft );
+        pClient->nextMsgIndex += msgBufBytesLeft;
+        strSize -= msgBufBytesLeft;
+        message += msgBufBytesLeft;
    }
 }

-
 /* 
 * logClientSend ()
 */
@@ -255,43 +221,54 @@ void epicsShareAPI logClientSend ( logClientId id, const char * message )

 void epicsShareAPI logClientFlush ( logClientId id )
 {
+    unsigned nSent;
+    int status = 0;
+
    logClient * pClient = ( logClient * ) id;

-    if ( ! pClient ) {
+    if ( ! pClient || ! pClient->connected ) {
        return;
    }

    epicsMutexMustLock ( pClient->mutex );

-    while ( pClient->nextMsgIndex && pClient->connected ) {
-        int status = send ( pClient->sock, pClient->msgBuf, 
-            pClient->nextMsgIndex, 0 );
-        if ( status > 0 ) {
-            unsigned nSent = (unsigned) status;
-            if ( nSent < pClient->nextMsgIndex ) {
-                unsigned newNextMsgIndex = pClient->nextMsgIndex - nSent;
-                memmove ( pClient->msgBuf, & pClient->msgBuf[nSent], 
-                    newNextMsgIndex );
-                pClient->nextMsgIndex = newNextMsgIndex;
-            }
-            else {
-                pClient->nextMsgIndex = 0u;
-            }
+    nSent = pClient->backlog;
+    while ( nSent < pClient->nextMsgIndex && pClient->connected ) {
+        status = send ( pClient->sock, pClient->msgBuf + nSent,
+            pClient->nextMsgIndex - nSent, 0 );
+        if ( status < 0 ) break;
+        nSent += status;
+    }
+
+    if ( pClient->backlog > 0 && status >= 0 )
+    {
+        /* On Linux send 0 bytes can detect EPIPE */
+        /* NOOP on Windows, fails on vxWorks */
+        errno = 0;
+        status = send ( pClient->sock, NULL, 0, 0 );
+        if (!(errno == ECONNRESET || errno == EPIPE)) status = 0;
+    }
+
+    if ( status < 0 ) {
+        if ( ! pClient->shutdown ) {
+            char sockErrBuf[128];
+            epicsSocketConvertErrnoToString ( sockErrBuf, sizeof ( sockErrBuf ) );
+            fprintf ( stderr, "log client: lost contact with log server at \"%s\" because \"%s\"\n", 
+                pClient->name, sockErrBuf );
        }
-        else {
-            if ( ! pClient->shutdown ) {
-                char sockErrBuf[64];
-                if ( status ) {
-                    epicsSocketConvertErrnoToString ( sockErrBuf, sizeof ( sockErrBuf ) );
-                }
-                else {
-                    strcpy ( sockErrBuf, "server initiated disconnect" );
-                }
-                fprintf ( stderr, "log client: lost contact with log server at \"%s\" because \"%s\"\n", 
-                    pClient->name, sockErrBuf );
-            }
-            logClientClose ( pClient );
-            break;
+        pClient->backlog = 0;
+        logClientClose ( pClient );
+    }
+    else if ( nSent > 0 && pClient->nextMsgIndex > 0 ) {
+        int backlog = epicsSocketUnsentCount ( pClient->sock );
+        if (backlog >= 0) {
+            pClient->backlog = backlog;
+            nSent -= backlog;
+        }
+        pClient->nextMsgIndex -= nSent;
+        if ( nSent > 0 && pClient->nextMsgIndex > 0 ) {
+            memmove ( pClient->msgBuf, & pClient->msgBuf[nSent],
+                pClient->nextMsgIndex );
        }
    }
    epicsMutexUnlock ( pClient->mutex );
@@ -302,10 +279,10 @@ void epicsShareAPI logClientFlush ( logClientId id )
 */
 static void logClientMakeSock (logClient *pClient)
 {
-    
-#   ifdef DEBUG
+    if (logClientDebug) {
        fprintf (stderr, "log client: creating socket...");
-#   endif
+        fflush (stderr);
+    }

    epicsMutexMustLock (pClient->mutex);
   
@@ -314,7 +291,7 @@ static void logClientMakeSock (logClient *pClient)
     */
    pClient->sock = epicsSocketCreate ( AF_INET, SOCK_STREAM, 0 );
    if ( pClient->sock == INVALID_SOCKET ) {
-        char sockErrBuf[64];
+        char sockErrBuf[128];
        epicsSocketConvertErrnoToString ( 
            sockErrBuf, sizeof ( sockErrBuf ) );
        fprintf ( stderr, "log client: no socket error %s\n", 
@@ -323,10 +300,8 @@ static void logClientMakeSock (logClient *pClient)
    
    epicsMutexUnlock (pClient->mutex);

-#   ifdef DEBUG
+    if (logClientDebug)
        fprintf (stderr, "done\n");
-#   endif
-
 }

 /*
@@ -366,7 +341,7 @@ static void logClientConnect (logClient *pClient)
            }
            else {
                if ( pClient->connFailStatus != errnoCpy && ! pClient->shutdown ) {
-                    char sockErrBuf[64];
+                    char sockErrBuf[128];
                    epicsSocketConvertErrnoToString (
                        sockErrBuf, sizeof ( sockErrBuf ) );
                    fprintf (stderr,
@@ -392,7 +367,7 @@ static void logClientConnect (logClient *pClient)
    optval = TRUE;
    status = setsockopt (pClient->sock, SOL_SOCKET, SO_KEEPALIVE, (char *)&optval, sizeof(optval));
    if (status<0) {
-        char sockErrBuf[64];
+        char sockErrBuf[128];
        epicsSocketConvertErrnoToString ( 
            sockErrBuf, sizeof ( sockErrBuf ) );
        fprintf (stderr, "log client: unable to enable keepalive option because \"%s\"\n", sockErrBuf);
@@ -404,11 +379,11 @@ static void logClientConnect (logClient *pClient)
     */
    status = shutdown (pClient->sock, SHUT_RD);
    if (status < 0) {
-        char sockErrBuf[64];
+        char sockErrBuf[128];
        epicsSocketConvertErrnoToString ( 
            sockErrBuf, sizeof ( sockErrBuf ) );
-        fprintf (stderr, "%s:%d shutdown(%d,SHUT_RD) error was \"%s\"\n", 
-            __FILE__, __LINE__, pClient->sock, sockErrBuf);
+        fprintf (stderr, "%s:%d shutdown(sock,SHUT_RD) error was \"%s\"\n", 
+            __FILE__, __LINE__, sockErrBuf);
        /* not fatal (although it shouldn't happen) */
    }

@@ -425,7 +400,7 @@ static void logClientConnect (logClient *pClient)
        lingerval.l_linger = 60*5; 
        status = setsockopt (pClient->sock, SOL_SOCKET, SO_LINGER, (char *) &lingerval, sizeof(lingerval));
        if (status<0) {
-            char sockErrBuf[64];
+            char sockErrBuf[128];
            epicsSocketConvertErrnoToString ( 
                sockErrBuf, sizeof ( sockErrBuf ) );
            fprintf (stderr, "log client: unable to set linger options because \"%s\"\n", sockErrBuf);
@@ -457,14 +432,10 @@ static void logClientRestart ( logClientId id )

        epicsMutexUnlock ( pClient->mutex );

-        if ( isConn ) {
-            logClientFlush ( pClient );
-        }
-        else {
-            logClientConnect ( pClient );
-        }
-        
-        epicsThreadSleep ( LOG_RESTART_DELAY );
+        if ( ! isConn ) logClientConnect ( pClient );
+        logClientFlush ( pClient );
+
+        epicsEventWaitWithTimeout ( pClient->shutdownNotify, LOG_RESTART_DELAY);

        epicsMutexMustLock ( pClient->mutex );
    }
@@ -480,9 +451,7 @@ static void logClientRestart ( logClientId id )
 logClientId epicsShareAPI logClientCreate (
    struct in_addr server_addr, unsigned short server_port)
 {
-    epicsTimeStamp begin, current;
    logClient *pClient;
-    double diff;

    pClient = calloc (1, sizeof (*pClient));
    if (pClient==NULL) {
@@ -507,14 +476,22 @@ logClientId epicsShareAPI logClientCreate (
    pClient->shutdownConfirm = 0;

    epicsAtExit (logClientDestroy, (void*) pClient);
-    
+
    pClient->stateChangeNotify = epicsEventCreate (epicsEventEmpty);
    if ( ! pClient->stateChangeNotify ) {
        epicsMutexDestroy ( pClient->mutex );
        free ( pClient );
        return NULL;
    }
-   
+
+    pClient->shutdownNotify = epicsEventCreate (epicsEventEmpty);
+    if ( ! pClient->shutdownNotify ) {
+        epicsMutexDestroy ( pClient->mutex );
+        epicsEventDestroy ( pClient->stateChangeNotify );
+        free ( pClient );
+        return NULL;
+    }
+
    pClient->restartThreadId = epicsThreadCreate (
        "logRestart", epicsThreadPriorityLow, 
        epicsThreadGetStackSize(epicsThreadStackSmall),
@@ -522,35 +499,12 @@ logClientId epicsShareAPI logClientCreate (
    if ( pClient->restartThreadId == NULL ) {
        epicsMutexDestroy ( pClient->mutex );
        epicsEventDestroy ( pClient->stateChangeNotify );
+        epicsEventDestroy ( pClient->shutdownNotify );
        free (pClient);
        fprintf(stderr, "log client: unable to start log client connection watch dog thread\n");
        return NULL;
    }

-    /*
-     * attempt to synchronize with circuit connect
-     */
-    epicsTimeGetCurrent ( & begin );
-    epicsMutexMustLock ( pClient->mutex );
-    do {
-        epicsMutexUnlock ( pClient->mutex );
-        epicsEventWaitWithTimeout ( 
-            pClient->stateChangeNotify, 
-            LOG_SERVER_CREATE_CONNECT_SYNC_TIMEOUT / 10.0 ); 
-        epicsTimeGetCurrent ( & current );
-        diff = epicsTimeDiffInSeconds ( & current, & begin );
-        epicsMutexMustLock ( pClient->mutex );
-    }
-    while ( ! pClient->connected && diff < LOG_SERVER_CREATE_CONNECT_SYNC_TIMEOUT );
-    epicsMutexUnlock ( pClient->mutex );
-
-    if ( ! pClient->connected ) {
-        fprintf (stderr, "log client create: timed out synchronizing with circuit connect to \"%s\" after %.1f seconds\n",
-            pClient->name, LOG_SERVER_CREATE_CONNECT_SYNC_TIMEOUT );
-    }
-        
-    errlogAddListener ( logClientSendMessage, (void *) pClient );
-
    return (void *) pClient;
 }

@@ -568,24 +522,21 @@ void epicsShareAPI logClientShow (logClientId id, unsigned level)
        printf ("log client: disconnected from log server at \"%s\"\n", pClient->name);
    }

-    if (level>1) {
-        printf ("log client: sock=%s, connect cycles = %u\n",
-            pClient->sock==INVALID_SOCKET?"INVALID":"OK",
-            pClient->connectCount);
-    }
-
    if (logClientPrefix) {
        printf ("log client: prefix is \"%s\"\n", logClientPrefix);
    }
-}

-/*
- * logClientSendMessage (); deprecated
- */
-void logClientSendMessage ( logClientId id, const char * message )
-{
-    if ( !iocLogDisable ) {
-        logClientSend (id, message);
+    if (level>0) {
+        printf ("log client: sock %s, connect cycles = %u\n",
+            pClient->sock==INVALID_SOCKET?"INVALID":"OK",
+            pClient->connectCount);
+    }
+    if (level>1) {
+        printf ("log client: %u bytes in buffer\n", pClient->nextMsgIndex);
+        if (pClient->nextMsgIndex)
+            printf("-------------------------\n"
+                "%.*s-------------------------\n",
+                (int)(pClient->nextMsgIndex), pClient->msgBuf);
    }
 }

--- a/src/libCom/log/logClient.h
+++ b/src/libCom/log/logClient.h
@@ -38,7 +38,6 @@ epicsShareFunc void epicsShareAPI iocLogPrefix(const char* prefix);
 /* deprecated interface; retained for backward compatibility */
 /* note: implementations are in iocLog.c, not logClient.c */
 epicsShareFunc logClientId epicsShareAPI logClientInit (void);
-epicsShareFunc void logClientSendMessage (logClientId id, const char *message);

 #ifdef __cplusplus
 }
--- a/src/libCom/osi/Makefile
+++ b/src/libCom/osi/Makefile
@@ -86,6 +86,7 @@ endif

 Com_SRCS += osdSock.c
 Com_SRCS += osdSockAddrReuse.cpp
+Com_SRCS += osdSockUnsentCount.c
 Com_SRCS += osiSock.c
 Com_SRCS += systemCallIntMech.cpp
 Com_SRCS += epicsSocketConvertErrnoToString.cpp
--- a/src/libCom/osi/epicsThread.cpp
+++ b/src/libCom/osi/epicsThread.cpp
@@ -350,5 +350,11 @@ extern "C" {
    }
 } // extern "C"

-// Ensure the main thread gets a unique ID
-epicsThreadId epicsThreadMainId = epicsThreadGetIdSelf();
+static epicsThreadId initMainThread(void) {
+    epicsThreadId main = epicsThreadGetIdSelf();
+    epicsThreadSetOkToBlock(1);
+    return main;
+}
+
+// Ensure the main thread gets a unique ID and allows blocking I/O
+epicsThreadId epicsThreadMainId = initMainThread();
--- a/src/libCom/osi/os/Darwin/osdSockUnsentCount.c
+++ b/src/libCom/osi/os/Darwin/osdSockUnsentCount.c
@@ -0,0 +1,19 @@
+/*************************************************************************\
+* EPICS BASE is distributed subject to a Software License Agreement found
+* in file LICENSE that is included with this distribution.
+\*************************************************************************/
+
+#define EPICS_PRIVATE_API
+#include "osiSock.h"
+
+/*
+ * epicsSocketUnsentCount ()
+ * See https://www.unix.com/man-page/osx/2/setsockopt
+ */
+int epicsSocketUnsentCount(SOCKET sock) {
+    int unsent;
+    socklen_t len = sizeof(unsent);
+    if (getsockopt(sock, SOL_SOCKET, SO_NWRITE, &unsent, &len) == 0)
+        return unsent;
+    return -1;
+}
--- a/src/libCom/osi/os/Linux/osdSockUnsentCount.c
+++ b/src/libCom/osi/os/Linux/osdSockUnsentCount.c
@@ -0,0 +1,19 @@
+/*************************************************************************\
+* EPICS BASE is distributed subject to a Software License Agreement found
+* in file LICENSE that is included with this distribution.
+\*************************************************************************/
+
+#include <linux/sockios.h>
+#define EPICS_PRIVATE_API
+#include "osiSock.h"
+
+/*
+ * epicsSocketUnsentCount ()
+ * See https://linux.die.net/man/7/tcp
+ */
+int epicsSocketUnsentCount(SOCKET sock) {
+    int unsent;
+    if (ioctl(sock, SIOCOUTQ, &unsent) == 0)
+        return unsent;
+    return -1;
+}
--- a/src/libCom/osi/os/RTEMS/osdThread.c
+++ b/src/libCom/osi/os/RTEMS/osdThread.c
@@ -25,6 +25,7 @@
 #include <assert.h>
 #include <syslog.h>
 #include <limits.h>
+#include <pthread.h>

 #include <rtems.h>
 #include <rtems/error.h>
@@ -615,6 +616,23 @@ showInternalTaskInfo (rtems_id tid)
    }
    thread = *the_thread;
    _Thread_Enable_dispatch();
+
+    /* This looks a bit weird, but it has to support RTEMS versions both before
+     * and after 4.10.2 when threads changed how their priorities are stored.
+     */
+    int policy;
+    struct sched_param sp;
+    rtems_task_priority real_priority, current_priority;
+    rtems_status_code sc = pthread_getschedparam(tid, &policy, &sp);
+    if (sc == RTEMS_SUCCESSFUL) {
+        real_priority = sp.sched_priority;
+        sc = rtems_task_set_priority(tid, RTEMS_CURRENT_PRIORITY, &current_priority);
+    }
+    if (sc != RTEMS_SUCCESSFUL) {
+        fprintf(epicsGetStdout(),"%-30s",  "  *** RTEMS task gone! ***");
+        return;
+    }
+
    /*
     * Show both real and current priorities if they differ.
     * Note that the epicsThreadGetOsiPriorityValue routine is not used here.
@@ -622,17 +640,17 @@ showInternalTaskInfo (rtems_id tid)
     * that priority should be displayed, not the value truncated to
     * the EPICS range.
     */
-    epicsPri = 199-thread.real_priority;
+    epicsPri = 199-real_priority;
    if (epicsPri < 0)
        fprintf(epicsGetStdout(),"   <0");
    else if (epicsPri > 99)
        fprintf(epicsGetStdout(),"  >99");
    else
        fprintf(epicsGetStdout()," %4d", epicsPri);
-    if (thread.current_priority == thread.real_priority)
-        fprintf(epicsGetStdout(),"%4d    ", (int)thread.current_priority);
+    if (current_priority == real_priority)
+        fprintf(epicsGetStdout(),"%4d    ", (int)current_priority);
    else
-        fprintf(epicsGetStdout(),"%4d/%-3d", (int)thread.real_priority, (int)thread.current_priority);
+        fprintf(epicsGetStdout(),"%4d/%-3d", (int)real_priority, (int)current_priority);
    showBitmap (bitbuf, thread.current_state, taskState);
    fprintf(epicsGetStdout(),"%8.8s", bitbuf);
    if (thread.current_state & (STATES_WAITING_FOR_SEMAPHORE |
--- a/src/libCom/osi/os/WIN32/osdSockUnsentCount.c
+++ b/src/libCom/osi/os/WIN32/osdSockUnsentCount.c
@@ -0,0 +1,26 @@
+/*************************************************************************\
+* EPICS BASE is distributed subject to a Software License Agreement found
+* in file LICENSE that is included with this distribution.
+\*************************************************************************/
+
+#define epicsExportSharedSymbols
+#define EPICS_PRIVATE_API
+#include "osiSock.h"
+#include <mstcpip.h>
+
+/*
+ * epicsSocketUnsentCount ()
+ * See https://docs.microsoft.com/en-us/windows/win32/api/mstcpip/ns-mstcpip-tcp_info_v0
+ */
+int epicsSocketUnsentCount(SOCKET sock) {
+#ifdef SIO_TCP_INFO
+/* Windows 10 Version 1703 / Server 2016 */
+    DWORD infoVersion = 0, bytesReturned;
+    TCP_INFO_v0 tcpInfo;
+    int status;
+    if ((status = WSAIoctl(sock, SIO_TCP_INFO, &infoVersion, sizeof(infoVersion),
+        &tcpInfo, sizeof(tcpInfo), &bytesReturned, NULL, NULL)) == 0)
+        return tcpInfo.BytesInFlight;
+#endif
+    return -1;
+}
--- a/src/libCom/osi/os/default/osdMessageQueue.cpp
+++ b/src/libCom/osi/os/default/osdMessageQueue.cpp
@@ -5,7 +5,7 @@
 *     Operator of Los Alamos National Laboratory.
 * EPICS BASE Versions 3.13.7
 * and higher are distributed subject to a Software License Agreement found
-* in file LICENSE that is included with this distribution. 
+* in file LICENSE that is included with this distribution.
 \*************************************************************************/
 /*
 *      Author  W. Eric Norum
@@ -50,7 +50,7 @@ struct epicsMessageQueueOSD {
    ELLLIST         receiveQueue;
    ELLLIST         eventFreeList;
    int             numberOfSendersWaiting;
-    
+
    epicsMutexId    mutex;
    unsigned long   capacity;
    unsigned long   maxMessageSize;
@@ -106,7 +106,7 @@ epicsShareFunc epicsMessageQueueId epicsShareAPI epicsMessageQueueCreate(
 }

 static void
-freeEventNode(struct eventNode *enode)
+destroyEventNode(struct eventNode *enode)
 {
    epicsEventDestroy(enode->event);
    free(enode);
@@ -119,7 +119,7 @@ epicsMessageQueueDestroy(epicsMessageQueueId pmsg)

    while ((evp = reinterpret_cast < struct eventNode * >
            ( ellGet(&pmsg->eventFreeList) ) ) != NULL) {
-        freeEventNode(evp);
+        destroyEventNode(evp);
    }
    epicsMutexDestroy(pmsg->mutex);
    free(pmsg->buf);
@@ -145,6 +145,16 @@ getEventNode(epicsMessageQueueId pmsg)
    return evp;
 }

+static void
+freeEventNode(epicsMessageQueueId pmsg, eventNode *evp, epicsEventStatus status)
+{
+    if (status == epicsEventWaitTimeout) {
+        epicsEventSignal(evp->event);
+        epicsEventWait(evp->event);
+    }
+    ellAdd(&pmsg->eventFreeList, &evp->link);
+}
+
 static int
 mySend(epicsMessageQueueId pmsg, void *message, unsigned int size,
    double timeout)
@@ -163,7 +173,7 @@ mySend(epicsMessageQueueId pmsg, void *message, unsigned int size,
    if ((pmsg->numberOfSendersWaiting > 0)
     || (pmsg->full && (ellFirst(&pmsg->receiveQueue) == NULL))) {
        /*
-         * Return if not allowed to wait
+         * Return if not allowed to wait. NB -1 means wait forever.
         */
        if (timeout == 0) {
            epicsMutexUnlock(pmsg->mutex);
@@ -171,7 +181,7 @@ mySend(epicsMessageQueueId pmsg, void *message, unsigned int size,
        }

        /*
-         * Wait
+         * Indicate that we're waiting
         */
        struct threadNode threadNode;
        threadNode.evp = getEventNode(pmsg);
@@ -186,22 +196,25 @@ mySend(epicsMessageQueueId pmsg, void *message, unsigned int size,

        epicsMutexUnlock(pmsg->mutex);

-        epicsEventStatus status;
-        if (timeout > 0)
-            status = epicsEventWaitWithTimeout(threadNode.evp->event, timeout);
-        else
-            status = epicsEventWait(threadNode.evp->event);
+        /*
+         * Wait for receiver to wake us
+         */
+        epicsEventStatus status = timeout < 0 ?
+            epicsEventWait(threadNode.evp->event) :
+            epicsEventWaitWithTimeout(threadNode.evp->event, timeout);

        epicsMutexMustLock(pmsg->mutex);

-        if(!threadNode.eventSent)
+        if (!threadNode.eventSent) {
+            /* Receiver didn't take us off the sendQueue, do it ourselves */
            ellDelete(&pmsg->sendQueue, &threadNode.link);
-        pmsg->numberOfSendersWaiting--;
+            pmsg->numberOfSendersWaiting--;
+        }

-        ellAdd(&pmsg->eventFreeList, &threadNode.evp->link);
+        freeEventNode(pmsg, threadNode.evp, status);

-        if ((pmsg->full && (ellFirst(&pmsg->receiveQueue) == NULL)) ||
-            status != epicsEventOK) {
+        if (pmsg->full && (ellFirst(&pmsg->receiveQueue) == NULL)) {
+            /* State of the queue didn't change, exit */
            epicsMutexUnlock(pmsg->mutex);
            return -1;
        }
@@ -294,6 +307,7 @@ myReceive(epicsMessageQueueId pmsg, void *message, unsigned int size,
         */
        if ((pthr = reinterpret_cast < struct threadNode * >
             ( ellGet(&pmsg->sendQueue) ) ) != NULL) {
+            pmsg->numberOfSendersWaiting--;
            pthr->eventSent = true;
            epicsEventSignal(pthr->evp->event);
        }
@@ -302,7 +316,7 @@ myReceive(epicsMessageQueueId pmsg, void *message, unsigned int size,
    }

    /*
-     * Return if not allowed to wait
+     * Return if not allowed to wait. NB -1 means wait forever.
     */
    if (timeout == 0) {
        epicsMutexUnlock(pmsg->mutex);
@@ -310,16 +324,7 @@ myReceive(epicsMessageQueueId pmsg, void *message, unsigned int size,
    }

    /*
-     * Wake up the oldest task waiting to send
-     */
-    if ((pthr = reinterpret_cast < struct threadNode * >
-         ( ellGet(&pmsg->sendQueue) ) ) != NULL) {
-        pthr->eventSent = true;
-        epicsEventSignal(pthr->evp->event);
-    }
-
-    /*
-     * Wait for message to arrive
+     * Indicate that we're waiting
     */
    struct threadNode threadNode;
    threadNode.evp = getEventNode(pmsg);
@@ -333,24 +338,36 @@ myReceive(epicsMessageQueueId pmsg, void *message, unsigned int size,
    }

    ellAdd(&pmsg->receiveQueue, &threadNode.link);
+
+    /*
+     * Wake up the oldest task waiting to send
+     */
+    if ((pthr = reinterpret_cast < struct threadNode * >
+         ( ellGet(&pmsg->sendQueue) ) ) != NULL) {
+        pmsg->numberOfSendersWaiting--;
+        pthr->eventSent = true;
+        epicsEventSignal(pthr->evp->event);
+    }
+
    epicsMutexUnlock(pmsg->mutex);

-    epicsEventStatus status;
-    if (timeout > 0)
-        status = epicsEventWaitWithTimeout(threadNode.evp->event, timeout);
-    else
-        status = epicsEventWait(threadNode.evp->event);
+    /*
+     * Wait for a message to arrive
+     */
+    epicsEventStatus status = timeout < 0 ?
+        epicsEventWait(threadNode.evp->event) :
+        epicsEventWaitWithTimeout(threadNode.evp->event, timeout);

    epicsMutexMustLock(pmsg->mutex);

    if (!threadNode.eventSent)
        ellDelete(&pmsg->receiveQueue, &threadNode.link);
-    ellAdd(&pmsg->eventFreeList, &threadNode.evp->link);
+
+    freeEventNode(pmsg, threadNode.evp, status);

    epicsMutexUnlock(pmsg->mutex);

-    if (threadNode.eventSent && (threadNode.size <= size) &&
-        status == epicsEventOK)
+    if (threadNode.eventSent && (threadNode.size <= size))
        return threadNode.size;
    return -1;
 }
@@ -398,7 +415,8 @@ epicsMessageQueuePending(epicsMessageQueueId pmsg)
 epicsShareFunc void epicsShareAPI
 epicsMessageQueueShow(epicsMessageQueueId pmsg, int level)
 {
-    printf("Message Queue Used:%d  Slots:%lu", epicsMessageQueuePending(pmsg), pmsg->capacity);
+    printf("Message Queue Used:%d  Slots:%lu",
+        epicsMessageQueuePending(pmsg), pmsg->capacity);
    if (level >= 1)
        printf("  Maximum size:%lu", pmsg->maxMessageSize);
    printf("\n");
--- a/src/libCom/osi/os/default/osdSockUnsentCount.c
+++ b/src/libCom/osi/os/default/osdSockUnsentCount.c
@@ -0,0 +1,15 @@
+/*************************************************************************\
+* EPICS BASE is distributed subject to a Software License Agreement found
+* in file LICENSE that is included with this distribution.
+\*************************************************************************/
+
+#define EPICS_PRIVATE_API
+#include "osiSock.h"
+
+/*
+ * epicsSocketUnsentCount ()
+ */
+int epicsSocketUnsentCount(SOCKET sock) {
+    /* not implemented */
+    return -1;
+}
--- a/src/libCom/osi/os/iOS/osdSockUnsentCount.c
+++ b/src/libCom/osi/os/iOS/osdSockUnsentCount.c
@@ -0,0 +1,19 @@
+/*************************************************************************\
+* EPICS BASE is distributed subject to a Software License Agreement found
+* in file LICENSE that is included with this distribution.
+\*************************************************************************/
+
+#define EPICS_PRIVATE_API
+#include "osiSock.h"
+
+/*
+ * epicsSocketUnsentCount ()
+ * See https://www.unix.com/man-page/osx/2/setsockopt
+ */
+int epicsSocketUnsentCount(SOCKET sock) {
+    int unsent;
+    socklen_t len = sizeof(unsent);
+    if (getsockopt(sock, SOL_SOCKET, SO_NWRITE, &unsent, &len) == 0)
+        return unsent;
+    return -1;
+}
--- a/src/libCom/osi/os/posix/epicsAtomicOSD.cpp
+++ b/src/libCom/osi/os/posix/epicsAtomicOSD.cpp
@@ -48,8 +48,10 @@ void epicsAtomicLock ( EpicsAtomicLockKey * )
        status = pthread_mutex_lock ( & mutex );
        if ( status == 0 ) return;
        assert ( status == EINTR );
-        static const useconds_t retryDelayUSec = 100000;
-        usleep ( retryDelayUSec );
+        struct timespec retryDelay = { 0, 100000000 };
+        struct timespec remainingDelay;
+        while (nanosleep(&retryDelay, &remainingDelay) == -1 && errno == EINTR)
+            retryDelay = remainingDelay;
        countDown--;
        assert ( countDown );
    }
--- a/src/libCom/osi/os/posix/epicsMath.h
+++ b/src/libCom/osi/os/posix/epicsMath.h
@@ -14,6 +14,18 @@
 #include <shareLib.h>

 #ifdef __cplusplus
+
+#if __cplusplus>=201103L
+#include <cmath>
+
+#if __GLIBCXX__>20160427
+using std::isfinite;
+using std::isinf;
+using std::isnan;
+using std::isnormal;
+#endif
+#endif /* c++11 */
+
 extern "C" {
 #endif

--- a/src/libCom/osi/osiClockTime.c
+++ b/src/libCom/osi/osiClockTime.c
@@ -41,7 +41,7 @@ static struct {
 static epicsThreadOnceId onceId = EPICS_THREAD_ONCE_INIT;


-#ifdef CLOCK_REALTIME
+#if defined(CLOCK_REALTIME) && !defined(_WIN32)
 /* This code is not used on systems without Posix CLOCK_REALTIME,
 * but the only way to detect that is from the OS headers, so the
 * Makefile can't exclude compiling this file on those systems.
@@ -229,7 +229,11 @@ static int ClockTimeGetCurrent(epicsTimeStamp *pDest)
    return 0;
 }

-#endif /* CLOCK_REALTIME */
+/* Used in Report function below: */
+#define UNINIT_ERROR "initialized"
+#else
+#define UNINIT_ERROR "available"
+#endif /* CLOCK_REALTIME && !WIN32 */

 /* Allow the following report routine to be compiled anyway
 * to avoid getting a build warning from ranlib.
@@ -242,13 +246,7 @@ int ClockTime_Report(int level)
    char timebuf[32];

    if (onceId == EPICS_THREAD_ONCE_INIT) {
-        printf("OS Clock driver not %s.\n",
-#ifdef CLOCK_REALTIME
-            "initialized"
-#else
-            "available"
-#endif /* CLOCK_REALTIME */
-            );
+        puts("OS Clock driver not " UNINIT_ERROR);
    }
    else if (ClockTimePvt.synchronize == CLOCKTIME_SYNC) {
        int synchronized, syncFromPriority;
--- a/src/libCom/osi/osiSock.h
+++ b/src/libCom/osi/osiSock.h
@@ -52,6 +52,14 @@ enum epicsSocketSystemCallInterruptMechanismQueryInfo {
 epicsShareFunc enum epicsSocketSystemCallInterruptMechanismQueryInfo 
        epicsSocketSystemCallInterruptMechanismQuery ();

+#ifdef EPICS_PRIVATE_API
+/*
+ * Some systems (e.g Linux and Windows 10) allow to check the amount
+ * of unsent data in the output queue.
+ * Returns -1 if the information is not available.
+ */
+epicsShareFunc int epicsSocketUnsentCount(SOCKET sock);
+#endif

 /*
 * convert socket address to ASCII in this order
--- a/src/libCom/test/Makefile
+++ b/src/libCom/test/Makefile
@@ -107,6 +107,11 @@ epicsThreadTest_SRCS += epicsThreadTest.cpp
 testHarness_SRCS += epicsThreadTest.cpp
 TESTS += epicsThreadTest

+TESTPROD_HOST += epicsThreadClassTest
+epicsThreadClassTest_SRCS += epicsThreadClassTest.cpp
+testHarness_SRCS += epicsThreadClassTest.cpp
+TESTS += epicsThreadClassTest
+
 TESTPROD_HOST += epicsThreadOnceTest
 epicsThreadOnceTest_SRCS += epicsThreadOnceTest.c
 testHarness_SRCS += epicsThreadOnceTest.c
--- a/src/libCom/test/epicsCalcTest.cpp
+++ b/src/libCom/test/epicsCalcTest.cpp
@@ -104,7 +104,7 @@ void testUInt32Calc(const char *expr, epicsUInt32 expected) {
            testDiag("calcPerform: error evaluating '%s'", expr);
        }

-    uresult = (epicsUInt32) result;
+    uresult = (result < 0.0 ? (epicsUInt32)(epicsInt32)result : (epicsUInt32)result);
    pass = (uresult == expected);
    if (!testOk(pass, "%s", expr)) {
        testDiag("Expected result is 0x%x (%u), actually got 0x%x (%u)",
@@ -297,7 +297,7 @@ MAIN(epicsCalcTest)
    const double a=1.0, b=2.0, c=3.0, d=4.0, e=5.0, f=6.0,
 		 g=7.0, h=8.0, i=9.0, j=10.0, k=11.0, l=12.0;
    
-    testPlan(613);
+    testPlan(630);

    /* LITERAL_OPERAND elements */
    testExpr(0);
@@ -612,14 +612,14 @@ MAIN(epicsCalcTest)
    testExpr(0.0 + NaN);
    testExpr(Inf + 0.0);
    testExpr(Inf + Inf);
-#if defined(_WIN64) && defined(_MSC_VER)
+#if defined(_WIN32) && defined(_MSC_VER)
    testCalc("Inf + -Inf", NaN);
 #else
    testExpr(Inf + -Inf);
 #endif
    testExpr(Inf + NaN);
    testExpr(-Inf + 0.0);
-#if defined(_WIN64) && defined(_MSC_VER)
+#if defined(_WIN32) && defined(_MSC_VER)
    testCalc("-Inf + Inf", NaN);
 #else
    testExpr(-Inf + Inf);
@@ -688,7 +688,7 @@ MAIN(epicsCalcTest)
    testExpr(NaN < NaN);
    
    testExpr(1 << 2);
-    testExpr(1 << 3 << 2)
+    testExpr(1 << 3 << 2);
    
    testExpr(0 <= 1);
    testExpr(0 <= 0);
@@ -776,7 +776,9 @@ MAIN(epicsCalcTest)
    testExpr(NaN >= NaN);
    
    testExpr(8 >> 1);
+    testCalc("8 >>> 1", 8u >> 1u);
    testExpr(64 >> 2 >> 1);
+    testCalc("64 >>> 2 >>> 1", 64u >> 2u >> 1u);
    
    testExpr(7 AND 4);
    
@@ -875,11 +877,14 @@ MAIN(epicsCalcTest)
    testExpr(3 << 2 & 10);			// 2 2
    testCalc("18 & 6 << 2", (18 & 6) << 2);	// 2 2
    testExpr(36 >> 2 & 10);			// 2 2
+    testCalc("36 >>> 2 & 10", 36u >> 2u & 10u);			// 2 2
    testCalc("18 & 20 >> 2", (18 & 20) >> 2);	// 2 2
+    testCalc("18 & 20 >>> 2", (18u & 20u) >> 2u);	// 2 2
    testExpr(3 & 4 == 4);			// 2 3
    testExpr(3 AND 4 == 4);			// 2 3
    testCalc("1 << 2 != 4", 1 << (2 != 4));	// 2 3
    testCalc("16 >> 2 != 4", 16 >> (2 != 4));	// 2 3
+    testCalc("16 >>> 2 != 4", 16u >> (2u != 4u));	// 2 3
    testExpr(3 AND -2); 			// 2 8
    testExpr(0 < 1 ? 2 : 3);			// 3 0
    testExpr(1 <= 0 ? 2 : 3);			// 3 0
@@ -951,7 +956,11 @@ MAIN(epicsCalcTest)
    testUInt32Calc("~0xaaaaaaaa", 0x55555555u);
    testUInt32Calc("~~0xaaaaaaaa", 0xaaaaaaaau);
    testUInt32Calc("0xaaaaaaaa >> 8", 0xffaaaaaau);
+    testUInt32Calc("0x55555555 >> 8", 0x00555555u);
+    testUInt32Calc("0xaaaaaaaa >>> 8", 0x00aaaaaau);
+    testUInt32Calc("0x55555555 >>> 8", 0x00555555u);
    testUInt32Calc("0xaaaaaaaa << 8", 0xaaaaaa00u);
+    testUInt32Calc("0x55555555 << 8", 0x55555500u);
    //   using integer literals assigned to variables
    testUInt32Calc("a:=0xaaaaaaaa; b:=0xffff0000; a AND b", 0xaaaa0000u);
    testUInt32Calc("a:=0xaaaaaaaa; b:=0xffff0000; a OR b", 0xffffaaaau);
@@ -959,7 +968,11 @@ MAIN(epicsCalcTest)
    testUInt32Calc("a:=0xaaaaaaaa; ~a", 0x55555555u);
    testUInt32Calc("a:=0xaaaaaaaa; ~~a", 0xaaaaaaaau);
    testUInt32Calc("a:=0xaaaaaaaa; a >> 8", 0xffaaaaaau);
+    testUInt32Calc("a:=0xaaaaaaaa; a >>> 8", 0x00aaaaaau);
    testUInt32Calc("a:=0xaaaaaaaa; a << 8", 0xaaaaaa00u);
+    testUInt32Calc("a:=0x55555555; a >> 8", 0x00555555u);
+    testUInt32Calc("a:=0x55555555; a >>> 8", 0x00555555u);
+    testUInt32Calc("a:=0x55555555; a << 8", 0x55555500u);

    // Test proper conversion of double values (+ 0.1 enforces double literal)
    // when used as inputs to the bitwise operations.
@@ -979,9 +992,13 @@ MAIN(epicsCalcTest)
    testUInt32Calc("~ -1431655766.1", 0x55555555u);
    testUInt32Calc("~ 2863311530.1", 0x55555555u);
    testUInt32Calc("-1431655766.1 >> 0", 0xaaaaaaaau);
+    testUInt32Calc("-1431655766.1 >>> 0", 0xaaaaaaaau);
    testUInt32Calc("2863311530.1 >> 0", 0xaaaaaaaau);
+    testUInt32Calc("2863311530.1 >>> 0", 0xaaaaaaaau);
    testUInt32Calc("-1431655766.1 >> 0.1", 0xaaaaaaaau);
+    testUInt32Calc("-1431655766.1 >>> 0.1", 0xaaaaaaaau);
    testUInt32Calc("2863311530.1 >> 0.1", 0xaaaaaaaau);
+    testUInt32Calc("2863311530.1 >>> 0.1", 0xaaaaaaaau);
    testUInt32Calc("-1431655766.1 << 0", 0xaaaaaaaau);
    testUInt32Calc("2863311530.1 << 0", 0xaaaaaaaau);
    testUInt32Calc("-1431655766.1 << 0.1", 0xaaaaaaaau);
@@ -989,4 +1006,3 @@ MAIN(epicsCalcTest)

    return testDone();
 }
-
--- a/src/libCom/test/epicsMathTest.c
+++ b/src/libCom/test/epicsMathTest.c
@@ -32,23 +32,23 @@ MAIN(epicsMathTest)
    testOk1(epicsINF > 0.0);
    testOk1(epicsINF - epicsINF != 0.0);

-#if defined(_WIN64) && defined(_MSC_VER)
-    testTodoBegin("Known failure on windows-x64");
+#if defined(_WIN32) && defined(_MSC_VER)
+    testTodoBegin("Known failure on windows-x64 and win32-x86");
 #endif
    testOk1(epicsINF + -epicsINF != 0.0);
    testOk1(-epicsINF + epicsINF != 0.0);
-#if defined(_WIN64) && defined(_MSC_VER)
+#if defined(_WIN32) && defined(_MSC_VER)
    testTodoEnd();
 #endif

    testOk1(isnan(epicsINF - epicsINF));

-#if defined(_WIN64) && defined(_MSC_VER)
-    testTodoBegin("Known failure on windows-x64");
+#if defined(_WIN32) && defined(_MSC_VER)
+    testTodoBegin("Known failure on windows-x64  and win32-x86");
 #endif
    testOk1(isnan(epicsINF + -epicsINF));
    testOk1(isnan(-epicsINF + epicsINF));
-#if defined(_WIN64) && defined(_MSC_VER)
+#if defined(_WIN32) && defined(_MSC_VER)
    testTodoEnd();
 #endif
    
@@ -62,12 +62,12 @@ MAIN(epicsMathTest)
    testOk1(!(epicsNAN > epicsNAN));
    testOk1(isnan(epicsNAN - epicsNAN));

-#if defined(_WIN64) && defined(_MSC_VER)
-    testTodoBegin("Known failure on windows-x64");
+#if defined(_WIN32) && defined(_MSC_VER)
+    testTodoBegin("Known failure on windows-x64 and win32-x86");
 #endif
    testOk1(isnan(epicsNAN + -epicsNAN));
    testOk1(isnan(-epicsNAN + epicsNAN));
-#if defined(_WIN64) && defined(_MSC_VER)
+#if defined(_WIN32) && defined(_MSC_VER)
    testTodoEnd();
 #endif
    
--- a/src/libCom/test/epicsMessageQueueTest.cpp
+++ b/src/libCom/test/epicsMessageQueueTest.cpp
@@ -28,6 +28,10 @@ static volatile int recvExit = 0;
 static epicsEventId finished;
 static unsigned int mediumStack;

+#define SLEEPY_TESTS 500
+static int numSent, numReceived;
+static epicsEventId complete;
+
 /*
 * In Numerical Recipes in C: The Art of Scientific Computing (William  H.
 * Press, Brian P. Flannery, Saul A. Teukolsky, William T. Vetterling; New
@@ -115,6 +119,106 @@ receiver(void *arg)
    epicsEventSignal(finished);
 }

+extern "C" void
+fastReceiver(void *arg)
+{
+    epicsMessageQueue *q = (epicsMessageQueue *)arg;
+    char cbuf[80];
+    int len;
+    numReceived = 0;
+    while (!recvExit) {
+        len = q->receive(cbuf, sizeof cbuf, 0.010);
+        if (len > 0) {
+            numReceived++;
+        }
+    }
+    recvExit = 0;
+    epicsEventSignal(complete);
+}
+
+void sleepySender(double delay)
+{
+    testDiag("sleepySender: sending every %.3f seconds", delay);
+    epicsMessageQueue q(4, 20);
+    epicsThreadCreate("Fast Receiver", epicsThreadPriorityMedium,
+        mediumStack, fastReceiver, &q);
+
+    numSent = 0;
+    for (int i = 0 ; i < SLEEPY_TESTS ; i++) {
+        if (q.send((void *)msg1, 4) == 0) {
+            numSent++;
+        }
+        epicsThreadSleep(delay);
+    }
+    epicsThreadSleep(1.0);
+    testOk(numSent == SLEEPY_TESTS, "Sent %d (should be %d)",
+        numSent, SLEEPY_TESTS);
+    testOk(numReceived == SLEEPY_TESTS, "Received %d (should be %d)",
+        numReceived, SLEEPY_TESTS);
+
+    recvExit = 1;
+    while (q.send((void *)msg1, 4) != 0)
+        epicsThreadSleep(0.01);
+    epicsEventMustWait(complete);
+}
+
+extern "C" void
+fastSender(void *arg)
+{
+    epicsMessageQueue *q = (epicsMessageQueue *)arg;
+    numSent = 0;
+
+    // Send first withough timeout
+    q->send((void *)msg1, 4);
+    numSent++;
+
+    // The rest have a timeout
+    while (!sendExit) {
+        if (q->send((void *)msg1, 4, 0.010) == 0) {
+            numSent++;
+        }
+    }
+    sendExit = 0;
+    epicsEventSignal(complete);
+}
+
+void sleepyReceiver(double delay)
+{
+    testDiag("sleepyReceiver: acquiring every %.3f seconds", delay);
+    epicsMessageQueue q(4, 20);
+
+    // Fill the queue
+    for (int i = q.pending(); i < 4 ;i++) {
+        q.send((void *)msg1, 4);
+    }
+
+    epicsThreadCreate("Fast Sender", epicsThreadPriorityMedium,
+        mediumStack, fastSender, &q);
+    epicsThreadSleep(0.5);
+
+    char cbuf[80];
+    int len;
+    numReceived = 0;
+
+    for (int i = 0 ; i < SLEEPY_TESTS ; i++) {
+        len = q.receive(cbuf, sizeof cbuf);
+        if (len > 0) {
+            numReceived++;
+        }
+        epicsThreadSleep(delay);
+    }
+
+    testOk(numSent == SLEEPY_TESTS, "Sent %d (should be %d)",
+        numSent, SLEEPY_TESTS);
+    testOk(numReceived == SLEEPY_TESTS, "Received %d (should be %d)",
+        numReceived, SLEEPY_TESTS);
+
+    sendExit = 1;
+    while (q.receive(cbuf, sizeof cbuf) <= 0)
+        epicsThreadSleep(0.01);
+    epicsEventMustWait(complete);
+}
+
 extern "C" void
 sender(void *arg)
 {
@@ -251,6 +355,18 @@ extern "C" void messageQueueTest(void *parm)
    testOk(q1->send((void *)msg1, 10) == 0, "Send with no receiver");
    epicsThreadSleep(2.0);

+    testDiag("6 Single receiver single sender 'Sleepy timeout' tests,");
+    testDiag("    these should take about %.2f seconds each:",
+        SLEEPY_TESTS * 0.010);
+
+    complete = epicsEventMustCreate(epicsEventEmpty);
+    sleepySender(0.009);
+    sleepySender(0.010);
+    sleepySender(0.011);
+    sleepyReceiver(0.009);
+    sleepyReceiver(0.010);
+    sleepyReceiver(0.011);
+
    testDiag("Single receiver, single sender tests:");
    epicsThreadSetPriority(myThreadId, epicsThreadPriorityHigh);
    epicsThreadCreate("Receiver one", epicsThreadPriorityMedium,
@@ -285,7 +401,7 @@ extern "C" void messageQueueTest(void *parm)
     * Single receiver, multiple sender tests
     */
    testDiag("Single receiver, multiple sender tests:");
-    testDiag("This test lasts 60 seconds...");
+    testDiag("This test lasts 30 seconds...");
    testOk(!!epicsThreadCreate("Sender 1", epicsThreadPriorityLow,
        mediumStack, sender, q1),
        "Created Sender 1");
@@ -299,9 +415,9 @@ extern "C" void messageQueueTest(void *parm)
        mediumStack, sender, q1),
        "Created Sender 4");

-    for (i = 0; i < 10; i++) {
-        testDiag("... %2d", 10 - i);
-        epicsThreadSleep(6.0);
+    for (i = 0; i < 6; i++) {
+        testDiag("... %2d", 6 - i);
+        epicsThreadSleep(5.0);
    }

    sendExit = 1;
@@ -312,7 +428,7 @@ extern "C" void messageQueueTest(void *parm)

 MAIN(epicsMessageQueueTest)
 {
-    testPlan(62);
+    testPlan(74);

    finished = epicsEventMustCreate(epicsEventEmpty);
    mediumStack = epicsThreadGetStackSize(epicsThreadStackMedium);
--- a/src/libCom/test/epicsSockResolveTest.c
+++ b/src/libCom/test/epicsSockResolveTest.c
@@ -75,8 +75,11 @@ MAIN(epicsSockResolveTest)
            testSkip(2, "  aToIPAddr() failed");
        }
        else {
-            testOk(addr.sin_addr.s_addr == htonl(okdata[i].IP), "  IP correct");
-            testOk(addr.sin_port == htons(okdata[i].port), "  Port correct");
+            testOk(addr.sin_addr.s_addr == htonl(okdata[i].IP),
+                   "  IP correct 0x%08x == 0x%08x", (unsigned)ntohl(addr.sin_addr.s_addr),
+                   (unsigned)okdata[i].IP);
+            testOk(addr.sin_port == htons(okdata[i].port), "  Port correct %u == %u",
+                   ntohs(addr.sin_port), okdata[i].port);
        }
    }

--- a/src/libCom/test/epicsStackTraceTest.c
+++ b/src/libCom/test/epicsStackTraceTest.c
@@ -1,11 +1,11 @@
-/* 
+/*
 * Copyright: Stanford University / SLAC National Laboratory.
 *
 * EPICS BASE is distributed subject to a Software License Agreement found
- * in file LICENSE that is included with this distribution. 
+ * in file LICENSE that is included with this distribution.
 *
 * Author: Till Straumann <strauman@slac.stanford.edu>, 2014
- */ 
+ */

 /*
 * Check stack trace functionality
@@ -135,14 +135,14 @@ findNumOcc(const char *buf)
    }
    /* We should find an address close to epicsStackTraceRecurseGbl twice */
    for (i=0; i<n_ptrs-1; i++) {
-        /* I got a (unjustified) index-out-of-bound warning 
+        /* I got a (unjustified) index-out-of-bound warning
         * when setting j=i+1 here. Thus the weird j!= i check...
         */
        j = i;
        while ( j < n_ptrs ) {
            if ( j != i && ptrs[j] == ptrs[i] ) {
                if ( (char*)ptrs[i] >= (char*)epicsStackTraceRecurseGbl && (char*)ptrs[i] < (char*)epicsStackTraceRecurseGbl + WINDOW_SZ ) {
-                    rval ++;    
+                    rval ++;
                    if ( test_debug )
                        testDiag("found address %p again\n", ptrs[i]);
                }
@@ -167,7 +167,7 @@ MAIN(epicsStackTraceTest)

    testPlan(5);

-    features = epicsStackTraceGetFeatures(); 
+    features = epicsStackTraceGetFeatures();

    all_features =   EPICS_STACKTRACE_LCL_SYMBOLS
                   | EPICS_STACKTRACE_GBL_SYMBOLS
@@ -217,7 +217,13 @@ MAIN(epicsStackTraceTest)
    }

    if ( (features & EPICS_STACKTRACE_ADDRESSES) ) {
+#ifdef _MINGW
+        testTodoBegin("MinGW, might fail");
+#endif
        testOk(  numFound > 0, "dumping addresses" );
+#ifdef _MINGW
+        testTodoEnd();
+#endif
    } else {
        testSkip(1 , "no support for dumping addresses on this platform");
    }
--- a/src/libCom/test/epicsThreadClassTest.cpp
+++ b/src/libCom/test/epicsThreadClassTest.cpp
@@ -0,0 +1,210 @@
+/*************************************************************************\
+* Copyright (c) 2020 UChicago Argonne LLC, as Operator of Argonne
+*     National Laboratory.
+* EPICS BASE is distributed subject to a Software License Agreement found
+* in file LICENSE that is included with this distribution.
+\*************************************************************************/
+/* epicsThreadClassTest.cpp */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "dbDefs.h"
+#include "epicsAssert.h"
+#include "epicsThread.h"
+#include "epicsUnitTest.h"
+#include "testMain.h"
+
+/* Key to the char's that define the test case actions:
+ *
+ * Upper case letters are for parent thread actions
+ *   B - Parent calls thread->start() and waits for child to start
+ *   D - Parent deletes thread. This waits for child to return if it hasn't yet
+ *   E - Parent calls thread->exitWait(), this may wait for child to return
+ *   S - Parent sleeps for SLEEP_TIME seconds
+ *   T - Parent sends sync trigger to child (w)
+ *   W - Parent waits for sync trigger from child (t)
+ *   X - Parent calls thread->exitWait(0)
+ *
+ * Lower case letters are for child thread actions
+ *   d - Child deletes thread
+ *   e - Child calls thread->exitWait()
+ *   r - Child returns
+ *   s - Child sleeps for SLEEP_TIME seconds
+ *   t - Child sends sync trigger to parent (W)
+ *   w - Child waits for sync trigger from child (T)
+ *
+ * Note that it is possible to write test cases that can hang,
+ * segfault, or that trigger errors from thread APIs.
+ */
+
+// The test cases
+
+const char * const cases[] = {
+ // These cases don't start the thread:
+    "D",        // Parent deletes thread
+    "ED",       // Parent does exitWait(), deletes thread
+
+ // In these cases the parent deletes the thread
+    "BrSD",     // Child returns; parent deletes thread
+    "BsDr",     // Parent deletes thread; child returns
+    "BrSED",    // Child returns; parent does exitWait(), deletes thread
+    "BsErD",    // Parent does exitWait(); child returns; parent deletes thread
+    "BsXDr",    // Parent does exitWait(0); parent deletes thread; child returns
+    "BwXTDsr",  // Parent does exitWait(0); parent deletes thread; child returns
+ // These are currently broken
+//  "BetWSrD",  // Child does exitWait(); sync; child returns; parent deletes thread
+//  "BetWsDr",  // Child does exitWait(); sync; parent deletes thread; child returns
+
+ // In these cases the child deletes the thread
+    "BdrS",     // Child deletes thread, returns
+    "BedrS",    // Child does exitWait(), deletes thread, returns
+    "BwXTSdr",  // Parent does exitWait(0); sync; child deletes thread, returns
+
+    NULL        // Terminator
+};
+
+// How long to sleep for while the other thread works
+#define SLEEP_TIME   1.0
+
+class threadCase: public epicsThreadRunable {
+public:
+    threadCase(const char * const tcase);
+    virtual ~threadCase();
+    virtual void run();
+    epicsThread *pthread;
+    epicsEvent startEvt;
+    epicsEvent childEvt;
+    epicsEvent parentEvt;
+private:
+    const char * const name;
+};
+
+threadCase::threadCase(const char * const tcase) :
+    pthread(new epicsThread(*this, tcase,
+            epicsThreadGetStackSize(epicsThreadStackSmall))),
+    name(tcase)
+{
+    testDiag("Constructing test case '%s'", name);
+}
+
+threadCase::~threadCase()
+{
+    testDiag("Destroying test case '%s'", name);
+}
+
+void threadCase::run()
+{
+    testDiag("Child running for '%s'", name);
+    startEvt.signal();
+
+    for (const char * pdo = name;
+         const char tdo = *pdo;
+         pdo++)
+    {
+        switch (tdo)
+        {
+        case 'd':
+            testDiag("'%c': Child deleting epicsThread", tdo);
+            delete pthread;
+            pthread = NULL;
+            break;
+
+        case 'e':
+            testDiag("'%c': Child calling exitWait()", tdo);
+            assert(pthread);
+            pthread->exitWait();
+            break;
+
+        case 's':
+            testDiag("'%c': Child sleeping", tdo);
+            epicsThreadSleep(SLEEP_TIME);
+            break;
+
+        case 't':
+            testDiag("'%c': Child sending trigger", tdo);
+            parentEvt.signal();
+            break;
+
+        case 'w':
+            testDiag("'%c': Child awaiting trigger", tdo);
+            childEvt.wait();
+            break;
+
+        case 'r':
+            testDiag("'%c': Child returning", tdo);
+            return;
+        }
+    }
+    testFail("Test case '%s' is missing 'r'", name);
+}
+
+MAIN(epicsThreadClassTest)
+{
+    const int ntests = NELEMENTS(cases);
+    testPlan(ntests - 1); // The last element is the NULL terminator
+
+    for (const char * const * pcase = cases;
+         const char * const tcase = *pcase;
+         pcase++)
+    {
+        testDiag("======= Test case '%s' =======", tcase);
+        threadCase thrCase(tcase);
+
+        for (const char * pdo = tcase;
+             const char tdo = *pdo;
+             pdo++)
+        {
+            switch (tdo)
+            {
+            case 'B':
+                testDiag("'%c': Parent starting child", tdo);
+                assert(thrCase.pthread);
+                thrCase.pthread->start();
+                thrCase.startEvt.wait();
+                break;
+
+            case 'D':
+                testDiag("'%c': Parent deleting epicsThread", tdo);
+                assert(thrCase.pthread);
+                delete thrCase.pthread;
+                thrCase.pthread = NULL;
+                break;
+
+            case 'E':
+                testDiag("'%c': Parent calling exitWait()", tdo);
+                assert(thrCase.pthread);
+                thrCase.pthread->exitWait();
+                break;
+
+            case 'X':
+                testDiag("'%c': Parent calling exitWait(0)", tdo);
+                assert(thrCase.pthread);
+                thrCase.pthread->exitWait(0);
+                break;
+
+            case 'S':
+                testDiag("'%c': Parent sleeping", tdo);
+                epicsThreadSleep(SLEEP_TIME);
+                break;
+
+            case 'T':
+                testDiag("'%c': Parent sending trigger", tdo);
+                thrCase.childEvt.signal();
+                break;
+
+            case 'W':
+                testDiag("'%c': Parent awaiting trigger", tdo);
+                thrCase.parentEvt.wait();
+                break;
+            }
+        }
+
+        testPass("Test case '%s' passed", tcase);
+    }
+
+    return testDone();
+}
--- a/src/libCom/test/epicsTimerTest.cpp
+++ b/src/libCom/test/epicsTimerTest.cpp
@@ -108,14 +108,13 @@ inline double delayVerify::delay () const

 double delayVerify::checkError () const
 {
-    const double messageThresh = 2.0; // percent 
+    const double messageThresh = 5.0; // percent
    double actualDelay =  this->expireStamp - this->beginStamp;
    double measuredError = actualDelay - this->expectedDelay;
    double percentError = 100.0 * fabs ( measuredError ) / this->expectedDelay;
-    if ( ! testOk1 ( percentError < messageThresh ) ) {
-        testDiag ( "delay = %f s, error = %f s (%.1f %%)", 
-            this->expectedDelay, measuredError, percentError );
-    }
+    testOk ( percentError < messageThresh, "%f < %f, delay = %f s, error = %f s (%.1f %%)",
+             percentError, messageThresh,
+             this->expectedDelay, measuredError, percentError  );
    return measuredError;
 }

--- a/src/std/rec/aaiRecord.dbd
+++ b/src/std/rec/aaiRecord.dbd
@@ -1,116 +0,0 @@
-#*************************************************************************
-# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
-#     National Laboratory.
-# Copyright (c) 2002 The Regents of the University of California, as
-#     Operator of Los Alamos National Laboratory.
-# EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution.
-#*************************************************************************
-menu(aaiPOST) {
-	choice(aaiPOST_Always,"Always")
-	choice(aaiPOST_OnChange,"On Change")
-}
-recordtype(aai) {
-	include "dbCommon.dbd" 
-	field(VAL,DBF_NOACCESS) {
-		prompt("Value")
-		asl(ASL0)
-		special(SPC_DBADDR)
-		pp(TRUE)
-		extra("void *		val")
-		#=type DOUBLE[]
-		#=read Yes
-		#=write Yes
-	}
-	field(PREC,DBF_SHORT) {
-		prompt("Display Precision")
-		promptgroup("80 - Display")
-		interest(1)
-		prop(YES)
-	}
-	field(INP,DBF_INLINK) {
-		prompt("Input Specification")
-		promptgroup("40 - Input")
-		interest(1)
-	}
-	field(EGU,DBF_STRING) {
-		prompt("Engineering Units")
-		promptgroup("80 - Display")
-		interest(1)
-		size(16)
-		prop(YES)
-	}
-	field(HOPR,DBF_DOUBLE) {
-		prompt("High Operating Range")
-		promptgroup("80 - Display")
-		interest(1)
-		prop(YES)
-	}
-	field(LOPR,DBF_DOUBLE) {
-		prompt("Low Operating Range")
-		promptgroup("80 - Display")
-		interest(1)
-		prop(YES)
-	}
-	field(NELM,DBF_ULONG) {
-		prompt("Number of Elements")
-		promptgroup("30 - Action")
-		special(SPC_NOMOD)
-		interest(1)
-		initial("1")
-	}
-	field(FTVL,DBF_MENU) {
-		prompt("Field Type of Value")
-		promptgroup("30 - Action")
-		special(SPC_NOMOD)
-		interest(1)
-		menu(menuFtype)
-	}
-	field(NORD,DBF_ULONG) {
-		prompt("Number elements read")
-		special(SPC_NOMOD)
-	}
-	field(BPTR,DBF_NOACCESS) {
-		prompt("Buffer Pointer")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("void *		bptr")
-	}
-	field(SIML,DBF_INLINK) {
-		prompt("Sim Mode Location")
-		promptgroup("90 - Simulate")
-		interest(1)
-	}
-	field(SIMM,DBF_MENU) {
-		prompt("Simulation Mode")
-		interest(1)
-		menu(menuYesNo)
-	}
-	field(SIMS,DBF_MENU) {
-		prompt("Sim mode Alarm Svrty")
-		promptgroup("90 - Simulate")
-		interest(2)
-		menu(menuAlarmSevr)
-	}
-	field(SIOL,DBF_INLINK) {
-		prompt("Sim Input Specifctn")
-		promptgroup("90 - Simulate")
-		interest(1)
-	}
-	field(MPST,DBF_MENU) {
-		prompt("Post Value Monitors")
-		promptgroup("80 - Display")
-		interest(1)
-		menu(aaiPOST)
-	}
-	field(APST,DBF_MENU) {
-		prompt("Post Archive Monitors")
-		promptgroup("80 - Display")
-		interest(1)
-		menu(aaiPOST)
-	}
-	field(HASH,DBF_ULONG) {
-		prompt("Hash of OnChange data.")
-		interest(3)
-	}
-}
--- a/src/std/rec/aaiRecord.dbd.pod
+++ b/src/std/rec/aaiRecord.dbd.pod
@@ -0,0 +1,478 @@
+#*************************************************************************
+# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
+#     National Laboratory.
+# Copyright (c) 2002 The Regents of the University of California, as
+#     Operator of Los Alamos National Laboratory.
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution.
+#*************************************************************************
+
+=title Array Analog Input (aai)
+
+The array analog input record type is used to read array data. The array data can
+contain any of the supported data types. The record is in many ways similar to the
+waveform record. It allows, however, the device support to allocate the array
+storage.
+
+=recordtype aai
+
+=cut
+
+include "menuFtype.dbd"
+
+menu(aaiPOST) {
+	choice(aaiPOST_Always,"Always")
+	choice(aaiPOST_OnChange,"On Change")
+}
+
+recordtype(aai) {
+
+=head2 Parameter Fields
+
+The record-specific fields are described below, grouped by functionality.
+
+=head3 Scan Parameters
+
+The array analog input record has the standard fields for specifying under what
+circumstances the record will be processed. These fields are listed in L<Scan
+Fields>. In addition, L<Scanning Specification> explains how these fields are
+used. Note that I/O event scanning is only supported for those card types that
+interrupt.
+
+=head3 Read Parameters
+
+These fields are configurable by the user to specify how and from where the record
+reads its data. The INP field determines from where the array analog input gets
+its input. It can be a hardware address, a channel access or database link, or a
+constant. Only in records that use soft device support can the INP field be a
+channel access link, a database link, or a constant. Otherwise, the INP field must
+be a hardware address. See L<Address Specification> for information on the format
+of hardware addresses and database links.
+
+=head4 Fields related to waveform reading
+
+The DTYP field must contain the name of the appropriate device support module.
+The values retrieved from the input link are placed in an array referenced by
+VAL. (If the INP link is a constant, elements can be placed in the array via
+dbPuts.) NELM specifies the number of elements that the array will hold, while
+FTVL specifies the data type of the elements.
+
+=fields DTYP, INP, NELM, FTVL
+
+=head4 Possible data types for FTVL
+
+=menu menuFtype
+
+=head3 Operator Display Parameters
+
+These parameters are used to present meaningful data to the operator. They
+display the value and other parameters of the waveform either textually or
+graphically.
+
+=head4 Fields related to I<Operator Display>
+
+EGU is a string of up to 16 characters describing the units that the array data
+measures. It is retrieved by the C<<< get_units() >>> record support routine.
+
+The HOPR and LOPR fields set the upper and lower display limits for array
+elements referenced by the VAL field. Both the C<<< get_graphic_double() >>> and
+C<<< get_control_double() >>> record support routines retrieve these fields.
+
+The PREC field determines the floating point precision with which to display the
+array values. It is used whenever the C<<< get_precision() >>> record support
+routine is called.
+
+See L<Fields Common to All Record Types> for more on the record name (NAME) and
+description (DESC) fields.
+
+=fields EGU, HOPR, LOPR, PREC, NAME, DESC
+
+
+=head3 Alarm Parameters
+
+The array analog input record has the alarm parameters common to all record types.
+
+=head3 Monitor Parameters
+
+These parameters are used to determine when to send monitors placed on the VAL
+field. The APST and MPST fields are a menu with choices "Always" and "On
+Change". The default is "Always", thus monitors will normally be sent every time
+the record processes. Selecting "On Change" causes a 32-bit hash of the VAL
+field buffer to be calculated and compared with the previous hash value every
+time the record processes; the monitor will only be sent if the hash is
+different, indicating that the buffer has changed. Note that there is a small
+chance that two different value buffers might result in the same hash value, so
+for critical systems "Always" may be a better choice, even though it re-sends
+duplicate data.
+
+=head4 Record fields related to I<Monitor Parameters>
+
+=fields APST, MPST, HASH
+
+=head4 Menu choices for C<APST> and C<MPST> fields
+
+=menu aaiPOST
+
+=head3 Run-time Parameters
+
+These parameters are used by the run-time code for processing the array analog
+input record. They are not configured using a configuration tool. Only the VAL
+field is modifiable at run-time.
+
+VAL references the array where the array analog input record stores its data. The
+BPTR field holds the address of the array.
+
+The NORD field holds a counter of the number of elements that have been read
+into the array.
+
+=fields VAL, BPTR, NORD
+
+The following fields are used to operate the array analog input record in the
+simulation mode. See L<Simulation Mode> for more information on the simulation
+mode fields.
+
+=fields SIOL, SIML, SIMM, SIMS
+
+=begin html
+
+<br>
+<hr>
+<br>
+
+=end html
+
+=head2 Record Support
+
+=head3 Record Support Routines
+
+=head4 init_record
+
+   static long init_record(aaiRecord *prec, int pass)
+
+If device support includes C<init_record()>, it is called.
+
+Checks if device support allocated array space. If not, space for the array is
+allocated using NELM and FTVL. The array address is stored in the record.
+
+This routine initializes SIMM with the value of SIML if SIML type is CONSTANT
+link or creates a channel access link if SIML type is PV_LINK. VAL is likewise
+initialized if SIOL is CONSTANT or PV_LINK.
+
+This routine next checks to see that device support is available and a device
+support read routine is defined. If either does not exist, an error message is
+issued and processing is terminated
+
+=head4 process
+
+  static long process(aaiRecord *prec)
+
+See L</"Record Processing"> section below.
+
+=head4 cvt_dbaddr
+
+  static long cvt_dbaddr(DBADDR *paddr)
+
+This is called by dbNameToAddr. It makes the dbAddr structure refer to the
+actual buffer holding the result.
+
+=head4 get_array_info
+
+  static long get_array_info(DBADDR *paddr, long *no_elements, long *offset)
+
+Obtains values from the array referenced by VAL.
+
+=head4 put_array_info
+
+  static long put_array_info(DBADDR *paddr, long nNew)
+
+Writes values into the array referenced by VAL.
+
+=head4 get_units
+
+  static long get_units(DBADDR *paddr, char *units)
+
+Retrieves EGU.
+
+=head4 get_prec
+
+  static long get_precision(DBADDR *paddr, long *precision)
+
+Retrieves PREC if field is VAL field. Otherwise, calls C<<< recGblGetPrec() >>>.
+
+=head4 get_graphic_double
+
+  static long get_graphic_double(DBADDR *paddr, struct dbr_grDouble *pgd)
+
+Sets the upper display and lower display limits for a field. If the field is VAL
+the limits are set to HOPR and LOPR, else if the field has upper and lower
+limits defined they will be used, else the upper and lower maximum values for
+the field type will be used.
+
+Sets the following values:
+
+  upper_disp_limit = HOPR
+  lower_disp_limit = LOPR
+
+=head4 get_control_double
+
+  static long get_control_double(DBADDR *paddr, struct dbr_ctrlDouble *pcd)
+
+Sets the upper control and the lower control limits for a field. If the field is
+VAL the limits are set to HOPR and LOPR, else if the field has upper and lower
+limits defined they will be used, else the upper and lower maximum values for
+the field type will be used.
+
+Sets the following values
+
+  upper_ctrl_limit = HOPR
+  lower_ctrl_limit = LOPR
+
+=head3 Record Processing
+
+Routine process implements the following algorithm:
+
+=over
+
+=item 1.
+
+Check to see that the appropriate device support module exists. If it doesn't,
+an error message is issued and processing is terminated with the PACT field
+still set to TRUE. This ensures that processes will no longer be called for this
+record. Thus error storms will not occur.
+
+=item 2.
+
+Call device support read routine C<read_aai()>.
+
+=item 3.
+
+If PACT has been changed to TRUE, the device support read routine has started
+but has not completed writing the new value. In this case, the processing
+routine merely returns, leaving PACT TRUE.
+
+=item 4.
+
+Check to see if monitors should be invoked.
+
+=over
+
+=item *
+
+Alarm monitors are invoked if the alarm status or severity has changed.
+
+=item *
+
+Archive and value change monitors are invoked if APST or MPST are Always or if
+the result of the hash calculation is different.
+
+=item *
+
+NSEV and NSTA are reset to 0.
+
+=back
+
+=item 5.
+
+Scan forward link if necessary, set PACT FALSE, and return.
+
+=back
+
+=begin html
+
+<br>
+<hr>
+<br>
+
+=end html
+
+=cut
+
+	include "dbCommon.dbd" 
+	field(VAL,DBF_NOACCESS) {
+		prompt("Value")
+		asl(ASL0)
+		special(SPC_DBADDR)
+		pp(TRUE)
+		extra("void *		val")
+		#=type DOUBLE[]
+		#=read Yes
+		#=write Yes
+	}
+	field(PREC,DBF_SHORT) {
+		prompt("Display Precision")
+		promptgroup("80 - Display")
+		interest(1)
+		prop(YES)
+	}
+	field(INP,DBF_INLINK) {
+		prompt("Input Specification")
+		promptgroup("40 - Input")
+		interest(1)
+	}
+	field(EGU,DBF_STRING) {
+		prompt("Engineering Units")
+		promptgroup("80 - Display")
+		interest(1)
+		size(16)
+		prop(YES)
+	}
+	field(HOPR,DBF_DOUBLE) {
+		prompt("High Operating Range")
+		promptgroup("80 - Display")
+		interest(1)
+		prop(YES)
+	}
+	field(LOPR,DBF_DOUBLE) {
+		prompt("Low Operating Range")
+		promptgroup("80 - Display")
+		interest(1)
+		prop(YES)
+	}
+	field(NELM,DBF_ULONG) {
+		prompt("Number of Elements")
+		promptgroup("30 - Action")
+		special(SPC_NOMOD)
+		interest(1)
+		initial("1")
+	}
+	field(FTVL,DBF_MENU) {
+		prompt("Field Type of Value")
+		promptgroup("30 - Action")
+		special(SPC_NOMOD)
+		interest(1)
+		menu(menuFtype)
+	}
+	field(NORD,DBF_ULONG) {
+		prompt("Number elements read")
+		special(SPC_NOMOD)
+	}
+	field(BPTR,DBF_NOACCESS) {
+		prompt("Buffer Pointer")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("void *		bptr")
+	}
+	field(SIML,DBF_INLINK) {
+		prompt("Sim Mode Location")
+		promptgroup("90 - Simulate")
+		interest(1)
+	}
+	field(SIMM,DBF_MENU) {
+		prompt("Simulation Mode")
+		interest(1)
+		menu(menuYesNo)
+	}
+	field(SIMS,DBF_MENU) {
+		prompt("Sim mode Alarm Svrty")
+		promptgroup("90 - Simulate")
+		interest(2)
+		menu(menuAlarmSevr)
+	}
+	field(SIOL,DBF_INLINK) {
+		prompt("Sim Input Specifctn")
+		promptgroup("90 - Simulate")
+		interest(1)
+	}
+	field(MPST,DBF_MENU) {
+		prompt("Post Value Monitors")
+		promptgroup("80 - Display")
+		interest(1)
+		menu(aaiPOST)
+	}
+	field(APST,DBF_MENU) {
+		prompt("Post Archive Monitors")
+		promptgroup("80 - Display")
+		interest(1)
+		menu(aaiPOST)
+	}
+	field(HASH,DBF_ULONG) {
+		prompt("Hash of OnChange data.")
+		interest(3)
+	}
+}
+
+=head2 Device Support
+
+=head3 Fields Of Interest To Device Support
+
+Each array analog input record record must have an associated set of device
+support routines. The primary responsibility of the device support routines is to
+obtain a new array value whenever C<read_aai()> is called. The device support
+routines are primarily interested in the following fields:
+
+=fields PACT, DPVT, NSEV, NSTA, INP, NELM, FTVL, BPTR, NORD
+
+=head3 Device Support Routines
+
+Device support consists of the following routines:
+
+=head4 report
+
+  long report(int level)
+
+This optional routine is called by the IOC command C<dbior> and is passed the
+report level that was requested by the user.
+It should print a report on the state of the device support to stdout.
+The C<level> parameter may be used to output increasingly more detailed
+information at higher levels, or to select different types of information with
+different levels.
+Level zero should print no more than a small summary.
+
+=head4 init
+
+  long init(int after)
+
+This optional routine is called twice at IOC initialization time.
+The first call happens before any of the C<init_record()> calls are made, with
+the integer parameter C<after> set to 0.
+The second call happens after all of the C<init_record()> calls have been made,
+with C<after> set to 1.
+
+=head4 init_record
+
+  long init_record(dbCommon *precord)
+
+This routine is optional. If provided, it is called by the record support
+C<init_record()> routine.
+
+=head4 get_ioint_info
+
+  long get_ioint_info(int cmd, dbCommon *precord, IOSCANPVT *ppvt)
+
+This routine is called by the ioEventScan system each time the record is added
+or deleted from an I/O event scan list.  cmd has the value (0,1) if the
+record is being (added to, deleted from) an I/O event list. It must be
+provided for any device type that can use the ioEvent scanner.
+
+=head4 read_aai
+
+  long read_aai(dbCommon *precord)
+
+This routine must provide a new input value. It returns the following values:
+
+=over
+
+=item *
+
+0: Success.
+
+=item *
+
+Other: Error.
+
+=back
+
+=head3 Device Support For Soft Records
+
+The C<<< Soft Channel >>> device support module is provided to read values from
+other records and store them in arrays. If INP is a constant link, then read_aai
+does nothing. In this case, the record can be used to hold arrays written via
+dbPuts. If INP is a database or channel access link, the new array value is read
+from the link. NORD is set.
+
+This module places a value directly in VAL and NORD is set to the number of items
+in the array.
+
+If the INP link type is constant, then NORD is set to zero.
+
+=cut
--- a/src/std/rec/aaoRecord.dbd
+++ b/src/std/rec/aaoRecord.dbd
@@ -1,116 +0,0 @@
-#*************************************************************************
-# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
-#     National Laboratory.
-# Copyright (c) 2002 The Regents of the University of California, as
-#     Operator of Los Alamos National Laboratory.
-# EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution.
-#*************************************************************************
-menu(aaoPOST) {
-	choice(aaoPOST_Always,"Always")
-	choice(aaoPOST_OnChange,"On Change")
-}
-recordtype(aao) {
-	include "dbCommon.dbd" 
-	field(VAL,DBF_NOACCESS) {
-		prompt("Value")
-		asl(ASL0)
-		special(SPC_DBADDR)
-		pp(TRUE)
-		extra("void *		val")
-		#=type DOUBLE[]
-		#=read Yes
-		#=write Yes
-	}
-	field(PREC,DBF_SHORT) {
-		prompt("Display Precision")
-		promptgroup("80 - Display")
-		interest(1)
-		prop(YES)
-	}
-	field(OUT,DBF_OUTLINK) {
-		prompt("Output Specification")
-		promptgroup("50 - Output")
-		interest(1)
-	}
-	field(EGU,DBF_STRING) {
-		prompt("Engineering Units")
-		promptgroup("80 - Display")
-		interest(1)
-		size(16)
-		prop(YES)
-	}
-	field(HOPR,DBF_DOUBLE) {
-		prompt("High Operating Range")
-		promptgroup("80 - Display")
-		interest(1)
-		prop(YES)
-	}
-	field(LOPR,DBF_DOUBLE) {
-		prompt("Low Operating Range")
-		promptgroup("80 - Display")
-		interest(1)
-		prop(YES)
-	}
-	field(NELM,DBF_ULONG) {
-		prompt("Number of Elements")
-		promptgroup("30 - Action")
-		special(SPC_NOMOD)
-		interest(1)
-		initial("1")
-	}
-	field(FTVL,DBF_MENU) {
-		prompt("Field Type of Value")
-		promptgroup("30 - Action")
-		special(SPC_NOMOD)
-		interest(1)
-		menu(menuFtype)
-	}
-	field(NORD,DBF_ULONG) {
-		prompt("Number elements read")
-		special(SPC_NOMOD)
-	}
-	field(BPTR,DBF_NOACCESS) {
-		prompt("Buffer Pointer")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("void *		bptr")
-	}
-	field(SIML,DBF_INLINK) {
-		prompt("Sim Mode Location")
-		promptgroup("90 - Simulate")
-		interest(1)
-	}
-	field(SIMM,DBF_MENU) {
-		prompt("Simulation Mode")
-		interest(1)
-		menu(menuYesNo)
-	}
-	field(SIMS,DBF_MENU) {
-		prompt("Sim mode Alarm Svrty")
-		promptgroup("90 - Simulate")
-		interest(2)
-		menu(menuAlarmSevr)
-	}
-	field(SIOL,DBF_OUTLINK) {
-		prompt("Sim Output Specifctn")
-		promptgroup("90 - Simulate")
-		interest(1)
-	}
-	field(MPST,DBF_MENU) {
-		prompt("Post Value Monitors")
-		promptgroup("80 - Display")
-		interest(1)
-		menu(aaoPOST)
-	}
-	field(APST,DBF_MENU) {
-		prompt("Post Archive Monitors")
-		promptgroup("80 - Display")
-		interest(1)
-		menu(aaoPOST)
-	}
-	field(HASH,DBF_ULONG) {
-		prompt("Hash of OnChange data.")
-		interest(3)
-	}
-}
--- a/src/std/rec/aaoRecord.dbd.pod
+++ b/src/std/rec/aaoRecord.dbd.pod
@@ -0,0 +1,476 @@
+#*************************************************************************
+# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
+#     National Laboratory.
+# Copyright (c) 2002 The Regents of the University of California, as
+#     Operator of Los Alamos National Laboratory.
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution.
+#*************************************************************************
+
+=title Array Analog Output (aao)
+
+The array analog output record type is used to write array data. The array data
+can contain any of the supported data types. The record is in many ways similar to
+the waveform record but outputs arrays instead of reading them. It also allows the
+device support to allocate the array storage.
+
+=recordtype aao
+
+=cut
+
+include "menuFtype.dbd"
+
+menu(aaoPOST) {
+	choice(aaoPOST_Always,"Always")
+	choice(aaoPOST_OnChange,"On Change")
+}
+
+recordtype(aao) {
+
+=head2 Parameter Fields
+
+The record-specific fields are described below, grouped by functionality.
+
+=head3 Scan Parameters
+
+The array analog output record has the standard fields for specifying under what
+circumstances the record will be processed. These fields are listed in L<Scan
+Fields>. In addition, L<Scanning Specification> explains how these fields are
+used. I/O event scanning is only available when supported by device support.
+
+=head3 Write Parameters
+
+These fields are configurable by the user to specify how and where to the record
+writes its data. The OUT field determines where the array analog output writes its
+output. It can be a hardware address, a channel access or database link, or a
+constant. Only in records that use soft device support can the OUT field be a
+channel access link, a database link, or a constant. Otherwise, the OUT field must
+be a hardware address. See L<Address Specification> for information on the format
+of hardware addresses and database links.
+
+=head4 Fields related to array writing
+
+The DTYP field must contain the name of the appropriate device support module. The
+values in the array referenced by are written to the location specified in the OUT
+field. (If the OUT link is a constant, no data are written.) NELM specifies the
+maximum number of elements that the array can hold, while FTVL specifies the data
+type of the elements.
+
+=fields DTYP, OUT, NELM, FTVL
+
+=head4 Possible data types for FTVL
+
+=menu menuFtype
+
+=head3 Operator Display Parameters
+
+These parameters are used to present meaningful data to the operator. They
+display the value and other parameters of the waveform either textually or
+graphically.
+
+=head4 Fields related to I<Operator Display>
+
+EGU is a string of up to 16 characters describing the units that the array data
+measures. It is retrieved by the C<<< get_units >>> record support routine.
+
+The HOPR and LOPR fields set the upper and lower display limits for array
+elements referenced by the VAL field. Both the C<<< get_graphic_double >>> and
+C<<< get_control_double >>> record support routines retrieve these fields.
+
+The PREC field determines the floating point precision with which to display the
+array values. It is used whenever the C<<< get_precision >>> record support
+routine is called.
+
+See L<Fields Common to All Record Types> for more on the record name (NAME) and
+description (DESC) fields.
+
+=fields EGU, HOPR, LOPR, PREC, NAME, DESC
+
+
+=head3 Alarm Parameters
+
+The array analog output record has the alarm parameters common to all record
+types.
+
+=head3 Monitor Parameters
+
+These parameters are used to determine when to send monitors placed on the VAL
+field. The APST and MPST fields are a menu with choices "Always" and "On
+Change". The default is "Always", thus monitors will normally be sent every time
+the record processes. Selecting "On Change" causes a 32-bit hash of the VAL
+field buffer to be calculated and compared with the previous hash value every
+time the record processes; the monitor will only be sent if the hash is
+different, indicating that the buffer has changed. Note that there is a small
+chance that two different value buffers might result in the same hash value, so
+for critical systems "Always" may be a better choice, even though it re-sends
+duplicate data.
+
+=head4 Record fields related to I<Monitor Parameters>
+
+=fields APST, MPST, HASH
+
+=head4 Menu choices for C<APST> and C<MPST> fields
+
+=menu aaoPOST
+
+=head3 Run-time Parameters
+
+These parameters are used by the run-time code for processing the array analog
+output record. They are not configured using a configuration tool. Only the VAL
+field is modifiable at run-time.
+
+VAL references the array where the array analog output record stores its data. The
+BPTR field holds the address of the array.
+
+The NORD field holds a counter of the number of elements that have been written to
+the output,
+
+=fields VAL, BPTR, NORD
+
+The following fields are used to operate the array analog output record in the
+simulation mode. See L<Simulation Mode> for more information on the simulation
+mode fields.
+
+=fields SIOL, SIML, SIMM, SIMS
+
+=begin html
+
+<br>
+<hr>
+<br>
+
+=end html
+
+=head2 Record Support
+
+=head3 Record Support Routines
+
+=head4 init_record
+
+   static long init_record(aaoRecord *prec, int pass)
+
+If device support includes C<init_record()>, it is called.
+
+Checks if device support allocated array space. If not, space for the array is
+allocated using NELM and FTVL. The array address is stored in the record.
+
+This routine initializes SIMM with the value of SIML if SIML type is CONSTANT
+link or creates a channel access link if SIML type is PV_LINK. VAL is likewise
+initialized if SIOL is CONSTANT or PV_LINK.
+
+This routine next checks to see that device support is available and a device
+support write routine is defined. If either does not exist, an error message is
+issued and processing is terminated
+
+=head4 process
+
+  static long process(aaoRecord *prec)
+
+See L</"Record Processing"> section below.
+
+=head4 cvt_dbaddr
+
+  static long cvt_dbaddr(DBADDR *paddr)
+
+This is called by dbNameToAddr. It makes the dbAddr structure refer to the
+actual buffer holding the result.
+
+=head4 get_array_info
+
+  static long get_array_info(DBADDR *paddr, long *no_elements, long *offset)
+
+Obtains values from the array referenced by VAL.
+
+=head4 put_array_info
+
+  static long put_array_info(DBADDR *paddr, long nNew)
+
+Writes values into the array referenced by VAL.
+
+=head4 get_units
+
+  static long get_units(DBADDR *paddr, char *units)
+
+Retrieves EGU.
+
+=head4 get_prec
+
+  static long get_precision(DBADDR *paddr, long *precision)
+
+Retrieves PREC if field is VAL field. Otherwise, calls C<<< recGblGetPrec() >>>.
+
+=head4 get_graphic_double
+
+  static long get_graphic_double(DBADDR *paddr, struct dbr_grDouble *pgd)
+
+Sets the upper display and lower display limits for a field. If the field is VAL
+the limits are set to HOPR and LOPR, else if the field has upper and lower
+limits defined they will be used, else the upper and lower maximum values for
+the field type will be used.
+
+Sets the following values:
+
+  upper_disp_limit = HOPR
+  lower_disp_limit = LOPR
+
+=head4 get_control_double
+
+  static long get_control_double(DBADDR *paddr, struct dbr_ctrlDouble *pcd)
+
+Sets the upper control and the lower control limits for a field. If the field is
+VAL the limits are set to HOPR and LOPR, else if the field has upper and lower
+limits defined they will be used, else the upper and lower maximum values for
+the field type will be used.
+
+Sets the following values
+
+  upper_ctrl_limit = HOPR
+  lower_ctrl_limit = LOPR
+
+=head3 Record Processing
+
+Routine process implements the following algorithm:
+
+=over
+
+=item 1.
+
+Check to see that the appropriate device support module exists. If it doesn't,
+an error message is issued and processing is terminated with the PACT field
+still set to TRUE. This ensures that processes will no longer be called for this
+record. Thus error storms will not occur.
+
+=item 2.
+
+Call device support write routine C<write_aao>.
+
+=item 3.
+
+If PACT has been changed to TRUE, the device support read routine has started
+but has not completed writing the new value. In this case, the processing
+routine merely returns, leaving PACT TRUE.
+
+=item 4.
+
+Check to see if monitors should be invoked.
+
+=over
+
+=item *
+
+Alarm monitors are invoked if the alarm status or severity has changed.
+
+=item *
+
+Archive and value change monitors are invoked if APST or MPST are Always or if
+the result of the hash calculation is different.
+
+=item *
+
+NSEV and NSTA are reset to 0.
+
+=back
+
+=item 5.
+
+Scan forward link if necessary, set PACT FALSE, and return.
+
+=back
+
+=begin html
+
+<br>
+<hr>
+<br>
+
+=end html
+
+=cut
+
+	include "dbCommon.dbd" 
+	field(VAL,DBF_NOACCESS) {
+		prompt("Value")
+		asl(ASL0)
+		special(SPC_DBADDR)
+		pp(TRUE)
+		extra("void *		val")
+		#=type DOUBLE[]
+		#=read Yes
+		#=write Yes
+	}
+	field(PREC,DBF_SHORT) {
+		prompt("Display Precision")
+		promptgroup("80 - Display")
+		interest(1)
+		prop(YES)
+	}
+	field(OUT,DBF_OUTLINK) {
+		prompt("Output Specification")
+		promptgroup("50 - Output")
+		interest(1)
+	}
+	field(EGU,DBF_STRING) {
+		prompt("Engineering Units")
+		promptgroup("80 - Display")
+		interest(1)
+		size(16)
+		prop(YES)
+	}
+	field(HOPR,DBF_DOUBLE) {
+		prompt("High Operating Range")
+		promptgroup("80 - Display")
+		interest(1)
+		prop(YES)
+	}
+	field(LOPR,DBF_DOUBLE) {
+		prompt("Low Operating Range")
+		promptgroup("80 - Display")
+		interest(1)
+		prop(YES)
+	}
+	field(NELM,DBF_ULONG) {
+		prompt("Number of Elements")
+		promptgroup("30 - Action")
+		special(SPC_NOMOD)
+		interest(1)
+		initial("1")
+	}
+	field(FTVL,DBF_MENU) {
+		prompt("Field Type of Value")
+		promptgroup("30 - Action")
+		special(SPC_NOMOD)
+		interest(1)
+		menu(menuFtype)
+	}
+	field(NORD,DBF_ULONG) {
+		prompt("Number elements read")
+		special(SPC_NOMOD)
+	}
+	field(BPTR,DBF_NOACCESS) {
+		prompt("Buffer Pointer")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("void *		bptr")
+	}
+	field(SIML,DBF_INLINK) {
+		prompt("Sim Mode Location")
+		promptgroup("90 - Simulate")
+		interest(1)
+	}
+	field(SIMM,DBF_MENU) {
+		prompt("Simulation Mode")
+		interest(1)
+		menu(menuYesNo)
+	}
+	field(SIMS,DBF_MENU) {
+		prompt("Sim mode Alarm Svrty")
+		promptgroup("90 - Simulate")
+		interest(2)
+		menu(menuAlarmSevr)
+	}
+	field(SIOL,DBF_OUTLINK) {
+		prompt("Sim Output Specifctn")
+		promptgroup("90 - Simulate")
+		interest(1)
+	}
+	field(MPST,DBF_MENU) {
+		prompt("Post Value Monitors")
+		promptgroup("80 - Display")
+		interest(1)
+		menu(aaoPOST)
+	}
+	field(APST,DBF_MENU) {
+		prompt("Post Archive Monitors")
+		promptgroup("80 - Display")
+		interest(1)
+		menu(aaoPOST)
+	}
+	field(HASH,DBF_ULONG) {
+		prompt("Hash of OnChange data.")
+		interest(3)
+	}
+}
+
+=head2 Device Support
+
+=head3 Fields Of Interest To Device Support
+
+Each array analog output record record must have an associated set of device
+support routines. The primary responsibility of the device support routines is to
+write the array data value whenever C<write_aao()> is called. The device support
+routines are primarily interested in the following fields:
+
+=fields PACT, DPVT, NSEV, NSTA, OUT, NELM, FTVL, BPTR, NORD
+
+=head3 Device Support Routines
+
+Device support consists of the following routines:
+
+=head4 report
+
+  long report(int level)
+
+This optional routine is called by the IOC command C<dbior> and is passed the
+report level that was requested by the user.
+It should print a report on the state of the device support to stdout.
+The C<level> parameter may be used to output increasingly more detailed
+information at higher levels, or to select different types of information with
+different levels.
+Level zero should print no more than a small summary.
+
+=head4 init
+
+  long init(int after)
+
+This optional routine is called twice at IOC initialization time.
+The first call happens before any of the C<init_record()> calls are made, with
+the integer parameter C<after> set to 0.
+The second call happens after all of the C<init_record()> calls have been made,
+with C<after> set to 1.
+
+=head4 init_record
+
+  init_record(dbCommon *precord)
+
+This routine is optional. If provided, it is called by the record support
+C<init_record()> routine.
+
+=head4 get_ioint_info
+
+  long get_ioint_info(int cmd, dbCommon *precord, IOSCANPVT *ppvt)
+
+This routine is called by the ioEventScan system each time the record is added
+or deleted from an I/O event scan list.  cmd has the value (0,1) if the
+record is being (added to, deleted from) an I/O event list. It must be
+provided for any device type that can use the ioEvent scanner.
+
+=head4 write_aao
+
+  long write_aao(dbCommon *precord)
+
+This routine must write the array data to output. It returns the following values:
+
+=over
+
+=item *
+
+0: Success.
+
+=item *
+
+Other: Error.
+
+=back
+
+=head3 Device Support For Soft Records
+
+The C<<< Soft Channel >>> device support module is provided to write values to
+other records and store them in arrays. If OUT is a constant link, then
+C<write_aao()> does nothing. In this case, the record can be used to hold arrays
+written via dbPuts. If OUT is a database or channel access link, the array value
+is written to the link. NORD is set to the number of items in the array.
+
+
+If the OUT link type is constant, then NORD is set to zero.
+
+=cut
--- a/src/std/rec/aiRecord.dbd.pod
+++ b/src/std/rec/aiRecord.dbd.pod
@@ -190,7 +190,13 @@ noise.
 The AFTC field sets the time constant on a low-pass filter that delays the
 reporting of limit alarms until the signal has been within the alarm range for
 that number of seconds (the default AFTC value of zero retains the previous
-behavior).
+behavior). The record must be scanned often enough for the filtering action to
+work effectively and the alarm severity can only change when the record is
+processed, but that processing does not have to be regular; the filter uses the
+time since the record last processed in its calculation. Setting AFTC to a
+positive number of seconds will delay the record going into or out of a minor
+alarm severity or from minor to major severity until the input signal has been
+in the alarm range for that number of seconds.

 =fields HIHI, HIGH, LOW, LOLO, HHSV, HSV, LSV, LLSV, HYST, AFTC, LALM

--- a/src/std/rec/aoRecord.dbd.pod
+++ b/src/std/rec/aoRecord.dbd.pod
@@ -4,7 +4,7 @@
 # Copyright (c) 2002 The Regents of the University of California, as
 #     Operator of Los Alamos National Laboratory.
 # EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution. 
+# in file LICENSE that is included with this distribution.
 #*************************************************************************

 =title Analog Output Record (ao)
@@ -104,33 +104,32 @@ The LINR field can specify C<LINEAR> or C<SLOPE> for linear conversions,
 C<NO CONVERSION> for no conversions at all, or the name of a breakpoint table
 such as C<typeKdegC> for breakpoint conversions.

-Note that the ESLO, EOFF, EGUF, and EGUL fields are only used for linear
-conversions.
-Also note that none of these fields have any significance for records that use
-the Soft Channel device support module.
+The EGUF and EGUL fields should be set for C<LINEAR> conversions, and the ESLO
+and EOFF fields for C<SLOPE> conversion. Note that none of these fields have any
+significance for records that use the Soft Channel device support module.

 =over

 =item EGUF, EGUF

-The user must calculate these fields when configuring the database for records
+The user must set these fields when configuring the database for records
 that use C<LINEAR> conversions.
 They are used to calculate the values for ESLO and EOFF.
 See Conversion Specification for more information on how to calculate these
 fields.

+=item ESLO, EOFF
+
+Computed by device support from EGUF and EGUL when LINR specifies C<LINEAR>.
+These values must be supplied by the user when LINR specifies C<SLOPE>.
+Used only when LINR is C<LINEAR> or C<SLOPE>.
+
 =item AOFF, ASLO

 These fields are adjustment parameters for the raw output values.
 They are applied to the raw output value after conversion from engineering
 units.

-=item ESLO, EOFF
-
-Computed by device support using EGUF and EGUL when LINR specifies C<LINEAR>.
-These values must be supplied by the user when LINR specifies C<SLOPE>.
-Used only when LINR is C<LINEAR> or C<SLOPE>.
-
 =item ROFF

 This field can be used to offset the raw value generated by the conversion
@@ -168,8 +167,7 @@ addresses.

 For soft records the output link can be a database link, a channel
 access link, or a constant value. If the link is a constant, no output
-is sent. See Address Specification for information on the format of
-database and channel access addresses.
+is sent.

 =fields DTYP, OUT

@@ -193,8 +191,8 @@ The PREC field determines the floating point precision with which to
 display VAL, OVAL and PVAL. It is used whenever the get_precision
 record support routine is called.

-See Fields Common to All Record Types for more on the record name
-(NAME) and description (DESC) fields.
+See L<Fields Common to All Record Types|dbCommonRecord/Operator Display
+Parameters> for more on the record name (NAME) and description (DESC) fields.

 =fields EGU, HOPR, LOPR, PREC, NAME, DESC

@@ -209,9 +207,10 @@ and LOW fields, which must be floating-point values. For each of these
 fields, there is a corresponding severity field which can be either
 NO_ALARM, MINOR, or MAJOR.

-See Alarm Specification for a complete explanation of alarms and these
-fields. See Invalid Alarm Output Action for more information on the
-IVOA and IVOV fields. Alarm Fields lists other fields related to a
+See L<Invalid Output Action Fields|dbCommonOutput/Invalid Output Action Fields>
+for more information on the IVOA and IVOV fields.
+
+L<Alarm Fields|dbCommonRecord/Alarm Fields> lists other fields related to a
 alarms that are common to all record types.

 =fields HIHI, HIGH, LOW, LOLO, HHSV, HSV, LSV, LLSV, HYST, IVOA, IVOV
@@ -260,15 +259,15 @@ processing.

 =fields ORAW, RBV, ORBV, LALM, ALST, MLST, INIT, PBRK, LBRK, PVAL, OMOD

-The following fields are used to operate the analog output in the
-simulation mode. See Fields Common to Many Record Types for more
-information on these fields.
+The following fields are used when the record is in simulation mode. See
+L<Fields Common to Output Record Types|dbCommonOutput/Simulation Fields> for
+more information on these fields.

 =fields SIOL, SIML, SIMM, SIMS

 =cut

-    include "dbCommon.dbd" 
+    include "dbCommon.dbd"
    field(VAL,DBF_DOUBLE) {
        prompt("Desired Output")
        promptgroup("50 - Output")
@@ -575,6 +574,8 @@ get_precision, get_graphic_double, and get_control_double routines.

 =item init_record

+C<long init_record(aoRecord *prec, int pass);>
+
 This routine initializes SIMM if SIML is a constant or creates a
 channel access link if SIML is PV_LINK. If SIOL is PV_LINK a channel
 access link is created.
@@ -606,10 +607,14 @@ then set to FALSE. PVAL is set to VAL.

 =item process

+C<long process(aoRecord *prec);>
+
 See next section.

 =item special

+C<long special(DBADDR *paddr, int after);>
+
 The only special processing for analog output records is SPC_LINCONV
 which is invoked whenever either of the fields LINR, EGUF, EGUL or ROFF
 is changed If the device support routine special_linconv exists it is
@@ -620,6 +625,8 @@ re-initialized.

 =item get_alarm_double

+C<long get_alarm_double(DBADDR *, struct dbr_alDouble *);>
+
 Sets the following values:

 upper_alarm_limit = HIHI
@@ -769,7 +776,9 @@ Device support consists of the following routines:

 =over

-=item C<long report(int level)>
+=item report
+
+C<long report(int level);>

 This optional routine is called by the IOC command C<dbior> and is passed the
 report level that was requested by the user.
@@ -779,7 +788,9 @@ information at higher levels, or to select different types of information with
 different levels.
 Level zero should print no more than a small summary.

-=item C<long init(int after)>
+=item init
+
+C<long init(int after);>

 This optional routine is called twice at IOC initialization time.
 The first call happens before any of the C<init_record()> calls are made, with
@@ -787,7 +798,9 @@ the integer parameter C<after> set to 0.
 The second call happens after all of the C<init_record()> calls have been made,
 with C<after> set to 1.

-=item C<long init_record(aoRecord *prec)>
+=item init_record
+
+C<long init_record(aoRecord *prec);>

 This optional routine is called by the record initialization code for each ao
 record instance that has its DTYP field set to use this device support.
@@ -809,7 +822,9 @@ should also fetch that value and put it into the record's RVAL or VAL field. The
 return value should be zero if the RVAL field has been set, or 2 if either the
 VAL field has been set or if the last output value cannot be retrieved.

-=item C<long get_ioint_info(int cmd, aoRecord *prec, IOSCANPVT *piosl)>
+=item get_ioint_info
+
+C<long get_ioint_info(int cmd, aoRecord *prec, IOSCANPVT *piosl);>

 This optional routine is called whenever the record's SCAN field is being
 changed to or from the value C<I/O Intr> to find out which I/O Interrupt Scan
@@ -837,7 +852,9 @@ thread.
 The C<scanIoRequest()> routine is safe to call from an interrupt service routine
 on embedded architectures (vxWorks and RTEMS).

-=item C<long write_ao(aoRecord *prec)>
+=item write_ao
+
+C<long write_ao(aoRecord *prec);>

 This essential routine is called whenever the record has a new output value to
 send to the device. It is responsible for performing the write operation, using
@@ -856,7 +873,9 @@ that happens the C<write_ao()> routine will be called again with PACT still set
 to TRUE; it should then set it to FALSE to indicate the write has completed, and
 return.

-=item C<long special_linconv(aoRecord *prec, int after)>
+=item special_linconv
+
+C<long special_linconv(aoRecord *prec, int after);>

 This optional routine should be provided if the record type's unit conversion
 features are used by the device support's C<write_ao()> routine utilizing the
--- a/src/std/rec/calcRecord.dbd.pod
+++ b/src/std/rec/calcRecord.dbd.pod
@@ -318,10 +318,13 @@ XOR : Bitwise Exclusive Or
 C<~> : One's Complement

 =item *
-C<<< << >>> : Left shift
+C<<< << >>> : Arithmetic Left Shift

 =item *
-C<<< >> >>> : Right shift
+C<<< >> >>> : Arithmetic Right Shift
+
+=item *
+C<<<< >>> >>>> : Logical Right Shift

 =back

--- a/src/std/rec/calcoutRecord.dbd.pod
+++ b/src/std/rec/calcoutRecord.dbd.pod
@@ -350,10 +350,13 @@ XOR : Bitwise Exclusive Or
 C<~> : One's Complement

 =item *
-C<<< << >>> : Left shift
+C<<< << >>> : Arithmetic Left Shift

 =item *
-C<<< >> >>> : Right shift
+C<<< >> >>> : Arithmetic Right Shift
+
+=item *
+C<<<< >>> >>>> : Logical Right Shift

 =back

@@ -366,7 +369,7 @@ C<:=> : assigns a value (right hand side) to a variable (i.e. field)

 =back

-=head3 Parantheses, Comma, and Semicolon
+=head3 Parentheses, Comma, and Semicolon

 The open and close parentheses are supported. Nested parentheses are
 supported.
@@ -437,7 +440,7 @@ Result is E if (A + B)<(C + D)
 =item
 Result is unchanged if (A + B)>=(C + D)

-From 3.14.9 onwards, this expresion must be written as
+From 3.14.9 onwards, this expression must be written as
 C<(A + B) < (C + D) ? E : VAL>

 =back
@@ -505,7 +508,7 @@ C<On Change> -- write output every time VAL changes, i.e., every time the
 result of the expression changes.

 =item *
-C<When Zero> -- when record is preocessed, write output if VAL is zero.
+C<When Zero> -- when record is processed, write output if VAL is zero.

 =item *
 C<When Non-zero> -- when record is processed, write output if VAL is
@@ -531,9 +534,9 @@ output is executed. The field is a menu field with two options:
 If C<Use CALC> is specified, when the record writes its
 output it will write the result of the expression in the CALC field, that
 is, it will write the value of the VAL field. If C<Use OCAL> is specified,
-the record will instead write the result of the expresion in the OCAL
+the record will instead write the result of the expression in the OCAL
 field, which is contained in the OVAL field. The OCAL field is exactly like
-the CALC field and has the same fuctionality it can contain the string
+the CALC field and has the same functionality it can contain the string
 representation of an expression which is evaluated at run-time. Thus, if
 necessary, the record can use the result of the CALC expression to
 determine if data should be written and can use the result of the OCAL
@@ -548,7 +551,7 @@ the wait is over. The field DLYA is equal to 1 during the delay period. The
 resolution of the delay entry system dependent.

 The IVOA field specifies what action to take with the OUT link if the
-Calcout record eneters an INVALID alarm status. The options are
+Calcout record enters an INVALID alarm status. The options are
 C<Continue normally>, C<Don't drive outputs>, and C<Set output to IVOV>.
 If the IVOA field is C<Set output to IVOV>, the data entered into the
 IVOV field is written to the OUT link if the record alarm severity is
@@ -602,7 +605,7 @@ The CLCV and OLCV fields indicate the validity of the expression in the
 CALC and OCAL fields respectfully. If the expression in invalid, the field
 is set to one.

-The DYLA field is set to one during the delay specified in ODLY.
+The DLYA field is set to one during the delay specified in ODLY.

 See L<Fields Common to All Record Types> for more information on the record
 name (NAME) and description (DESC) fields.
@@ -617,7 +620,7 @@ record support routines. The Calculation alarm is called by the record
 processing routine when the CALC expression is an invalid one, upon which
 an error message is generated.

-The following alarm parametersi, which are configured by the user, define the
+The following alarm parameters, which are configured by the user, define the
 limit alarms for the VAL field and the severity corresponding to those
 conditions.

@@ -633,7 +636,7 @@ common to all record types.
 These parameters are used to determine when to send monitors for the value
 fields. These monitors are sent when the value field exceeds the last
 monitored field by the appropriate deadband, the ADEL for archiver monitors
-and the MDEL field for all aother types of monitors. If these fields have a
+and the MDEL field for all other types of monitors. If these fields have a
 value of zero, every time the value changes, monitors are triggered; if
 they have a value of -1, every time the record is scanned, monitors are
 triggered. See L<Monitor Specification> for a complete explanation of
@@ -1193,13 +1196,13 @@ Retrieves PREC.
 Sets the upper display and lower display limits for a field. If the field
 is VAL, HIHI, HIGH, LOW, or LOLO, the limits are set to HOPR and LOPR, else
 if the field has upper and lower limits defined they will be used, else the
-upper and lower macimum values for the field type will be used.
+upper and lower maximum values for the field type will be used.

 =head2 C<get_control_double>

 Sets the upper control and lower control limits for a field. If the VAL,
 HIHI, HIGH, LOW, or LOLO, the limits are set to HOPR and LOPR, else if the
-field has upper and lower limits defimed they will be used, else the upper
+field has upper and lower limits defined they will be used, else the upper
 and lower maximum values for the field will be used.

 =head2 C<get_alarm_double>
@@ -1241,7 +1244,7 @@ honors the alarm hysteresis factor (HYST). Thus the value must change by at
 least HYST before the alarm status and severity changes.

 =item 4.
-Determin if the Output Execution Option (OOPT) is met. If it met, either
+Determine if the Output Execution Option (OOPT) is met. If it met, either
 execute the output link (and output event) immediately (if ODLY = 0), or
 schedule a callback after the specified interval. See the explanation for
 the C<execOutput()> routine below.
@@ -1267,7 +1270,7 @@ NSEV and NSTA are reset to 0
 =back

 =item 6.
-If no output delay was specified, scan forwark link if necessaru, set PACT
+If no output delay was specified, scan forward link if necessary, set PACT
 FALSE, and return.

 =back
@@ -1290,7 +1293,7 @@ put the value of OVAL to the OUT link and post the event in OEVT (if
 non-zero).

 =item 4.
-If an output delay was implemented, process the forwark link.
+If an output delay was implemented, process the forward link.

 =back

--- a/src/std/rec/eventRecord.c
+++ b/src/std/rec/eventRecord.c
@@ -106,10 +106,11 @@ static long init_record(eventRecord *prec, int pass)
 	recGblInitConstantLink(&prec->siol,DBF_STRING,&prec->sval);
    }

-    prec->epvt = eventNameToHandle(prec->val);
-
    if( (pdset=(struct eventdset *)(prec->dset)) && (pdset->init_record) ) 
 		status=(*pdset->init_record)(prec);
+
+    prec->epvt = eventNameToHandle(prec->val);
+
    return(status);
 }

--- a/src/std/rec/histogramRecord.c
+++ b/src/std/rec/histogramRecord.c
@@ -133,33 +133,28 @@ static void wdogCallback(epicsCallback *arg)

    return;
 }
-static long wdogInit(histogramRecord *prec)
+
+static void wdogInit(histogramRecord *prec)
 {
-    myCallback *pcallback;
-
-    if (!prec->wdog && prec->sdel > 0) {
-        /* initialize a callback object */
-        pcallback = calloc(1, sizeof(myCallback));
-        pcallback->prec = prec;
-        if (!pcallback)
-            return -1;
-
-        callbackSetCallback(wdogCallback, &pcallback->callback);
-        callbackSetUser(pcallback, &pcallback->callback);
-        callbackSetPriority(priorityLow, &pcallback->callback);
-        prec->wdog = pcallback;
-    }
-
-    if (!prec->wdog)
-        return -1;
-    pcallback = prec->wdog;
-    if (!pcallback)
-        return -1;
    if (prec->sdel > 0) {
+        myCallback *pcallback = prec->wdog;
+
+        if (!pcallback) {
+            /* initialize a callback object */
+            pcallback = calloc(1, sizeof(myCallback));
+            if (!pcallback)
+                return;
+
+            pcallback->prec = prec;
+            callbackSetCallback(wdogCallback, &pcallback->callback);
+            callbackSetUser(pcallback, &pcallback->callback);
+            callbackSetPriority(priorityLow, &pcallback->callback);
+            prec->wdog = pcallback;
+        }
+
        /* start new timer on monitor */
        callbackRequestDelayed(&pcallback->callback, prec->sdel);
    }
-    return 0;
 }

 static long init_record(histogramRecord *prec, int pass)
--- a/src/std/rec/histogramRecord.dbd
+++ b/src/std/rec/histogramRecord.dbd
@@ -1,146 +0,0 @@
-#*************************************************************************
-# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
-#     National Laboratory.
-# Copyright (c) 2002 The Regents of the University of California, as
-#     Operator of Los Alamos National Laboratory.
-# EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution.
-#*************************************************************************
-menu(histogramCMD) {
-	choice(histogramCMD_Read,"Read")
-	choice(histogramCMD_Clear,"Clear")
-	choice(histogramCMD_Start,"Start")
-	choice(histogramCMD_Stop,"Stop")
-}
-recordtype(histogram) {
-	include "dbCommon.dbd" 
-	field(VAL,DBF_NOACCESS) {
-		prompt("Value")
-		asl(ASL0)
-		special(SPC_DBADDR)
-		extra("void *	val")
-		#=type ULONG[]
-		#=read Yes
-		#=write Yes
-	}
-	field(NELM,DBF_USHORT) {
-		prompt("Num of Array Elements")
-		promptgroup("30 - Action")
-		special(SPC_NOMOD)
-		interest(1)
-		initial("1")
-	}
-	field(CSTA,DBF_SHORT) {
-		prompt("Collection Status")
-		special(SPC_NOMOD)
-		interest(1)
-		initial("1")
-	}
-	field(CMD,DBF_MENU) {
-		prompt("Collection Control")
-		asl(ASL0)
-		special(SPC_CALC)
-		interest(1)
-		menu(histogramCMD)
-	}
-	field(ULIM,DBF_DOUBLE) {
-		prompt("Upper Signal Limit")
-		promptgroup("30 - Action")
-		special(SPC_RESET)
-		interest(1)
-		prop(YES)
-	}
-	field(LLIM,DBF_DOUBLE) {
-		prompt("Lower Signal Limit ")
-		promptgroup("30 - Action")
-		special(SPC_RESET)
-		interest(1)
-		prop(YES)
-	}
-	field(WDTH,DBF_DOUBLE) {
-		prompt("Element Width")
-		special(SPC_NOMOD)
-		interest(3)
-	}
-	field(SGNL,DBF_DOUBLE) {
-		prompt("Signal Value")
-		special(SPC_MOD)
-	}
-	field(PREC,DBF_SHORT) {
-		prompt("Display Precision")
-		promptgroup("80 - Display")
-		interest(1)
-		prop(YES)
-	}
-	field(SVL,DBF_INLINK) {
-		prompt("Signal Value Location")
-		promptgroup("40 - Input")
-		interest(1)
-	}
-	field(BPTR,DBF_NOACCESS) {
-		prompt("Buffer Pointer")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("epicsUInt32 *bptr")
-	}
-	field(WDOG,DBF_NOACCESS) {
-		prompt("Watchdog callback")
-		special(SPC_NOMOD)
-		interest(4)
-		extra("void *  wdog")
-	}
-	field(MDEL,DBF_SHORT) {
-		prompt("Monitor Count Deadband")
-		promptgroup("80 - Display")
-		interest(1)
-	}
-	field(MCNT,DBF_SHORT) {
-		prompt("Counts Since Monitor")
-		special(SPC_NOMOD)
-		interest(3)
-	}
-	field(SDEL,DBF_DOUBLE) {
-		prompt("Monitor Seconds Dband")
-		promptgroup("80 - Display")
-		special(SPC_RESET)
-		interest(1)
-	}
-	field(SIOL,DBF_INLINK) {
-		prompt("Sim Input Specifctn")
-		promptgroup("90 - Simulate")
-		interest(1)
-	}
-	field(SVAL,DBF_DOUBLE) {
-		prompt("Simulation Value")
-	}
-	field(SIML,DBF_INLINK) {
-		prompt("Sim Mode Location")
-		promptgroup("90 - Simulate")
-		interest(1)
-	}
-	field(SIMM,DBF_MENU) {
-		prompt("Simulation Mode")
-		interest(1)
-		menu(menuYesNo)
-	}
-	field(SIMS,DBF_MENU) {
-		prompt("Sim mode Alarm Svrty")
-		promptgroup("90 - Simulate")
-		interest(2)
-		menu(menuAlarmSevr)
-	}
-	field(HOPR,DBF_ULONG) {
-		prompt("High Operating Range")
-		promptgroup("80 - Display")
-		interest(1)
-		prop(YES)
-	}
-	field(LOPR,DBF_ULONG) {
-		prompt("Low Operating Range")
-		promptgroup("80 - Display")
-		interest(1)
-		prop(YES)
-	}
-}
-
-variable(histogramSDELprecision, int)
--- a/src/std/rec/histogramRecord.dbd.pod
+++ b/src/std/rec/histogramRecord.dbd.pod
@@ -0,0 +1,419 @@
+#*************************************************************************
+# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
+#     National Laboratory.
+# Copyright (c) 2002 The Regents of the University of California, as
+#     Operator of Los Alamos National Laboratory.
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution.
+#*************************************************************************
+
+=title Histogram Record (histogram)
+
+The histogram record is used to store frequency counts of a signal into an array
+of arbitrary length. The user can configure the range of the signal value that
+the array will store. Anything outside this range will be ignored.
+
+=head2 Parameter Fields
+
+The record-specific fields are described below.
+
+=recordtype histogram
+
+=cut
+
+menu(histogramCMD) {
+	choice(histogramCMD_Read,"Read")
+	choice(histogramCMD_Clear,"Clear")
+	choice(histogramCMD_Start,"Start")
+	choice(histogramCMD_Stop,"Stop")
+}
+
+recordtype(histogram) {
+
+=head3 Read Parameters
+
+The SVL is the input link where the record reads its value. It can be a
+constant, a database link, or a channel access link. If SVL is a database or
+channel access link, then SGNL is read from SVL. If SVL is a constant, then SGNL
+is initialized with the constant value but can be changed via dbPuts. The C<Soft
+Channel> device support module can be specified in the DTYP field.
+
+The ULIM and LLIM fields determine the usable range of signal values. Any value
+of SGNL below LLIM or above ULIM is outside the range and will not be stored in
+the array. In the NELM field the user must specify the array size, e.g., the
+number of array elements. Each element in the NELM field holds the counts for an
+interval of the range of signal counts, the range specified by ULIM and LLIM.
+These intervals are determined by dividing the range by NELM:
+
+  (ULIM - LLIM) / NELM.
+
+=fields SVL, SGNL, DTYP, NELM, ULIM, LLIM
+
+=head3 Operator Display Parameters
+
+These parameters are used to present meaningful data to the operator. These
+fields are used to display the value and other parameters of the histogram
+either textually or graphically. See L<Fields Common to All Record Types> for
+more on the record name (NAME) and description (DESC) fields.
+
+=fields NAME, DESC
+
+=head3 Alarm Parameters
+
+The Histogram record has the alarm parameters common to all record types.
+L<Alarm Fields> lists other fields related to a alarms that are common to all
+record types.
+
+=head3 Monitor Parameters
+
+The MDEL field implements the monitor count deadband. Only when MCNT is greater
+than the value given to MDEL are monitors triggered, MCNT being the number of
+counts since the last time the record was processed. If MDEL is -1, everytime
+the record is processed, a monitor is triggered regardless.
+
+If SDEL is greater than 0, it causes a callback routine to be called. The number
+specified in SDEL is the callback routines interval. The callback routine is
+called every SDEL seconds. The callback routine posts an event if MCNT is
+greater than 0.
+
+=fields MDEL, SDEL
+
+=head3 Run-time and Simulation Mode Parameters
+
+These parameters are used by the run-time code for processing the histogram.
+They are not configurable by the user prior to run-time. They represent the
+current state of the record. Many of them are used to process the histogram more
+efficiently.
+
+The BPTR field contains a pointer to the unsigned long array of frequency
+values. The VAL field references this array as well. However, the BPTR field is
+not accessible at run-time.
+
+The MCNT field keeps counts the number of signal counts since the last monitor
+was invoked.
+
+The collections controls field (CMD) is a menu field with five choices:
+
+=menu histogramCMD
+
+When CMD is C<Read>, the record retrieves its values and adds them to the signal
+array. This command will first clear the signal counts which have already been
+read when it is first invoked.
+
+The C<Clear> command erases the signal counts, setting the elements in the array
+back to zero. Afterwards, the CMD field is set back to C<Read>.
+
+The C<Start> command simply causes the record to read signal values into the
+array. Unlike C<Read>, it doesn't clear the array first.
+
+The C<Stop> command disables the reading of signal values into the array.
+
+The C<Setup> command waits until the C<start> or C<read> command has been issued
+to start counting.
+
+The CSTA or collections status field implements the CMD field choices by
+enabling or disabling the reading of values into the histogram array. While
+FALSE, no signals are added to the array. While TRUE, signals are read and added
+to the array. The field is initialized to TRUE. The C<Stop> command is the only
+command that sets CSTA to FALSE. On the other hand, the C<Start> command is the
+only command that sets it to TRUE. Thus, C<Start> must be invoked after each
+C<Stop> command in order to enable counting; invoking C<Read> will not enable
+signal counting after C<Stop> has been invoked.
+
+A typical use of these fields would be to initialize the CMD field to C<Read>
+(it is initialized to this command by default), to use the C<Stop> command to
+disable counting when necessary, after which the C<Start> command can be invoked
+to re-start the signal count.
+
+The WDTH field is a private field that holds the signal width of the array
+elements. For instance, if the LLIM was configured to be 4.0 and ULIM was
+configured to be 12.0 and the NELM was set to 4, then the WDTH for each array
+would be 2. Thus, it is (ULIM - LLIM) / NELM.
+
+=fields BPTR, VAL, MCNT, CMD, CSTA, WDTH
+
+The following fields are used to operate the histogram record in simulation
+mode. See L<Fields Common to Many Record Types> for more information on the
+simulation mode fields.
+
+=fields SIOL, SVAL, SIML, SIMM, SIMS
+
+=cut
+
+	include "dbCommon.dbd"
+	field(VAL,DBF_NOACCESS) {
+		prompt("Value")
+		asl(ASL0)
+		special(SPC_DBADDR)
+		extra("void *	val")
+		#=type ULONG[]
+		#=read Yes
+		#=write Yes
+	}
+	field(NELM,DBF_USHORT) {
+		prompt("Num of Array Elements")
+		promptgroup("30 - Action")
+		special(SPC_NOMOD)
+		interest(1)
+		initial("1")
+	}
+	field(CSTA,DBF_SHORT) {
+		prompt("Collection Status")
+		special(SPC_NOMOD)
+		interest(1)
+		initial("1")
+	}
+	field(CMD,DBF_MENU) {
+		prompt("Collection Control")
+		asl(ASL0)
+		special(SPC_CALC)
+		interest(1)
+		menu(histogramCMD)
+	}
+	field(ULIM,DBF_DOUBLE) {
+		prompt("Upper Signal Limit")
+		promptgroup("30 - Action")
+		special(SPC_RESET)
+		interest(1)
+		prop(YES)
+	}
+	field(LLIM,DBF_DOUBLE) {
+		prompt("Lower Signal Limit ")
+		promptgroup("30 - Action")
+		special(SPC_RESET)
+		interest(1)
+		prop(YES)
+	}
+	field(WDTH,DBF_DOUBLE) {
+		prompt("Element Width")
+		special(SPC_NOMOD)
+		interest(3)
+	}
+	field(SGNL,DBF_DOUBLE) {
+		prompt("Signal Value")
+		special(SPC_MOD)
+	}
+	field(PREC,DBF_SHORT) {
+		prompt("Display Precision")
+		promptgroup("80 - Display")
+		interest(1)
+		prop(YES)
+	}
+	field(SVL,DBF_INLINK) {
+		prompt("Signal Value Location")
+		promptgroup("40 - Input")
+		interest(1)
+	}
+	field(BPTR,DBF_NOACCESS) {
+		prompt("Buffer Pointer")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("epicsUInt32 *bptr")
+	}
+	field(WDOG,DBF_NOACCESS) {
+		prompt("Watchdog callback")
+		special(SPC_NOMOD)
+		interest(4)
+		extra("void *  wdog")
+	}
+	field(MDEL,DBF_SHORT) {
+		prompt("Monitor Count Deadband")
+		promptgroup("80 - Display")
+		interest(1)
+	}
+	field(MCNT,DBF_SHORT) {
+		prompt("Counts Since Monitor")
+		special(SPC_NOMOD)
+		interest(3)
+	}
+	field(SDEL,DBF_DOUBLE) {
+		prompt("Monitor Seconds Dband")
+		promptgroup("80 - Display")
+		special(SPC_RESET)
+		interest(1)
+	}
+	field(SIOL,DBF_INLINK) {
+		prompt("Sim Input Specifctn")
+		promptgroup("90 - Simulate")
+		interest(1)
+	}
+	field(SVAL,DBF_DOUBLE) {
+		prompt("Simulation Value")
+	}
+	field(SIML,DBF_INLINK) {
+		prompt("Sim Mode Location")
+		promptgroup("90 - Simulate")
+		interest(1)
+	}
+	field(SIMM,DBF_MENU) {
+		prompt("Simulation Mode")
+		interest(1)
+		menu(menuYesNo)
+	}
+	field(SIMS,DBF_MENU) {
+		prompt("Sim mode Alarm Svrty")
+		promptgroup("90 - Simulate")
+		interest(2)
+		menu(menuAlarmSevr)
+	}
+	field(HOPR,DBF_ULONG) {
+		prompt("High Operating Range")
+		promptgroup("80 - Display")
+		interest(1)
+		prop(YES)
+	}
+	field(LOPR,DBF_ULONG) {
+		prompt("Low Operating Range")
+		promptgroup("80 - Display")
+		interest(1)
+		prop(YES)
+	}
+
+=head2 Record Support
+
+=head3 Record Support Routines
+
+=head4 init_record
+
+Using NELM, space for the unsigned long array is allocated and the width WDTH of
+the array is calculated.
+
+This routine initializes SIMM with the value of SIML if SIML type is CONSTANT
+link or creates a channel access link if SIML type is PV_LINK. SVAL is likewise
+initialized if SIOL is CONSTANT or PV_LINK.
+
+This routine next checks to see that device support and a device support read
+routine are available. If device support includes C<init_record()>, it is
+called.
+
+=head4 process
+
+See next section.
+
+=head4 special
+
+Special is invoked whenever the fields CMD, SGNL, ULIM, or LLIM are changed.
+
+If SGNL is changed, add_count is called.
+
+If ULIM or LLIM are changed, WDTH is recalculated and clear_histogram is called.
+
+If CMD is less or equal to 1, clear_histogram is called and CMD is reset to 0.
+If CMD is 2, CSTA is set to TRUE and CMD is reset to 0. If CMD is 3, CSTA is set
+to FALSE and CMD is reset to 0.
+
+clear_histogram zeros out the histogram array. add_count increments the
+frequency in the histogram array.
+
+=head4 cvt_dbaddr
+
+This is called by dbNameToAddr. It makes the dbAddr structure refer to the
+actual buffer holding the array.
+
+=head4 get_array_info
+
+Obtains values from the array referenced by VAL.
+
+=head4 put_array_info
+
+Writes values into the array referenced by VAL.
+
+=head3 Record Processing
+
+Routine process implements the following algorithm:
+
+=over
+
+=item 1.
+
+Check to see that the appropriate device support module exists. If it doesn't,
+an error message is issued and processing is terminated with the PACT field set
+to TRUE. This ensures that processes will no longer be called for this record.
+Thus error storms will not occur.
+
+=item 2.
+
+readValue is called. See  L<Input Records> for more information
+
+=item 3.
+
+If PACT has been changed to TRUE, the device support read routine has started
+but has not completed writing the new value. In this case, the processing
+routine merely returns, leaving PACT TRUE.
+
+=item 4.
+
+Add count to histogram array.
+
+=item 5.
+
+Check to see if monitors should be invoked. Alarm monitors are invoked if the
+alarm status or severity has changed. Archive and value change monitors are
+invoked if MDEL conditions are met. NSEV and NSTA are reset to 0.
+
+=item 6.
+
+Scan forward link if necessary, set PACT and INIT to FALSE, and return.
+
+=back
+
+=head2 Device Support
+
+=head3 Fields Of Interest To Device Support
+
+The device support routines are primarily interested in the following fields:
+
+=fields PACT, DPVT, UDF, NSEV, NSTA, SVL, SGNL
+
+=head3 Device Support Routines
+
+Device support consists of the following routines:
+
+=head4 long report(int level)
+
+This optional routine is called by the IOC command C<dbior> and is passed the
+report level that was requested by the user.
+It should print a report on the state of the device support to stdout.
+The C<level> parameter may be used to output increasingly more detailed
+information at higher levels, or to select different types of information with
+different levels.
+Level zero should print no more than a small summary.
+
+=head4 long init(int after)
+
+This optional routine is called twice at IOC initialization time.
+The first call happens before any of the C<init_record()> calls are made, with
+the integer parameter C<after> set to 0.
+The second call happens after all of the C<init_record()> calls have been made,
+with C<after> set to 1.
+
+=head4 init_record
+
+  init_record(precord)
+
+This routine is called by the record support C<init_record()> routine. It makes
+sure that SGNL is a CONSTANT, PV_LINK, DB_LINK, or CA_LINK. It also retrieves a
+value for SVL from SGNL. If SGNL is none of the above, an error is generated.
+
+=head4 read_histogram
+
+  read_histogram(*precord)
+
+This routine is called by the record support routines. It retrieves a value for
+SVL from SGNL.
+
+=head3 Device Support For Soft Records
+
+Only the device support module C<Soft Channel> is currently provided, though
+other device support modules may be provided at the user's site.
+
+=head4 Soft Channel
+
+The C<Soft Channel> device support routine retrieves a value from SGNL. SGNL
+must be CONSTANT, PV_LINK, DB_LINK, or CA_LINK.
+
+=cut
+
+}
+
+variable(histogramSDELprecision, int)
--- a/src/std/rec/lsiRecord.dbd
+++ b/src/std/rec/lsiRecord.dbd
@@ -1,88 +0,0 @@
-#*************************************************************************
-# Copyright (c) 2012 UChicago Argonne LLC, as Operator of Argonne
-#     National Laboratory.
-# EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution.
-#*************************************************************************
-
-recordtype(lsi) {
-    include "dbCommon.dbd"
-    %#include "devSup.h"
-    %
-    %/* Declare Device Support Entry Table */
-    %typedef struct lsidset {
-    %    long number;
-    %    DEVSUPFUN report;
-    %    DEVSUPFUN init;
-    %    DEVSUPFUN init_record;
-    %    DEVSUPFUN get_ioint_info;
-    %    DEVSUPFUN read_string;
-    %} lsidset;
-    %
-    field(VAL,DBF_NOACCESS) {
-        prompt("Current Value")
-        asl(ASL0)
-        pp(TRUE)
-        special(SPC_DBADDR)
-        extra("char *val")
-    }
-    field(OVAL,DBF_NOACCESS) {
-        prompt("Old Value")
-        special(SPC_DBADDR)
-        interest(3)
-        extra("char *oval")
-    }
-    field(SIZV,DBF_USHORT) {
-        prompt("Size of buffers")
-        promptgroup("40 - Input")
-        special(SPC_NOMOD)
-        interest(1)
-        initial("41")
-    }
-    field(LEN,DBF_ULONG) {
-        prompt("Length of VAL")
-        special(SPC_NOMOD)
-    }
-    field(OLEN,DBF_ULONG) {
-        prompt("Length of OVAL")
-        special(SPC_NOMOD)
-    }
-    field(INP,DBF_INLINK) {
-        prompt("Input Specification")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(MPST,DBF_MENU) {
-        prompt("Post Value Monitors")
-        promptgroup("80 - Display")
-        interest(1)
-        menu(menuPost)
-    }
-    field(APST,DBF_MENU) {
-        prompt("Post Archive Monitors")
-        promptgroup("80 - Display")
-        interest(1)
-        menu(menuPost)
-    }
-    field(SIML,DBF_INLINK) {
-        prompt("Simulation Mode Link")
-        promptgroup("90 - Simulate")
-        interest(2)
-    }
-    field(SIMM,DBF_MENU) {
-        prompt("Simulation Mode")
-        interest(2)
-        menu(menuYesNo)
-    }
-    field(SIMS,DBF_MENU) {
-        prompt("Simulation Mode Severity")
-        promptgroup("90 - Simulate")
-        interest(2)
-        menu(menuAlarmSevr)
-    }
-    field(SIOL,DBF_INLINK) {
-        prompt("Sim Input Specifctn")
-        promptgroup("90 - Simulate")
-        interest(2)
-    }
-}
--- a/src/std/rec/lsiRecord.dbd.pod
+++ b/src/std/rec/lsiRecord.dbd.pod
@@ -0,0 +1,207 @@
+#*************************************************************************
+# Copyright (c) 2012 UChicago Argonne LLC, as Operator of Argonne
+#     National Laboratory.
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution.
+#*************************************************************************
+
+
+=title Long String Input Record (lsi)
+
+The long string input record is used to retrieve an arbitrary ASCII string with
+a maximum length of 65535 characters.
+
+=head2 Parameter Fields
+
+The record-specific fields are described below, grouped by functionality.
+
+=recordtype lsi
+
+=cut
+
+recordtype(lsi) {
+
+=head3 Scan Parameters
+
+The long string input record has the standard fields for specifying under what
+circumstances it will be processed. These fields are listed in L<Scan Fields>.
+In addition, L<Scanning Specification> explains how these fields are used.
+
+=head3 Input Specification
+
+The INP field determines where the long string input record obtains its string
+from. It can be a database or channel access link, or a constant. If constant,
+the VAL field is initialized with the constant and can be changed via dbPuts.
+Otherwise, the string is read from the specified location each time the record
+is processed and placed in the VAL field. The maximum number of characters in
+VAL is given by SIZV, and cannot be larger than 65535. In addition, the
+appropriate device support module must be entered into the DTYP field.
+
+See L<Address Specification> for information on specifying links.
+
+=fields VAL, OVAL, SIZV, INP, DTYP
+
+=cut
+
+    include "dbCommon.dbd"
+    %#include "devSup.h"
+    %
+    %/* Declare Device Support Entry Table */
+    %typedef struct lsidset {
+    %    long number;
+    %    DEVSUPFUN report;
+    %    DEVSUPFUN init;
+    %    DEVSUPFUN init_record;
+    %    DEVSUPFUN get_ioint_info;
+    %    DEVSUPFUN read_string;
+    %} lsidset;
+    %
+    field(VAL,DBF_NOACCESS) {
+        prompt("Current Value")
+        asl(ASL0)
+        pp(TRUE)
+        special(SPC_DBADDR)
+        extra("char *val")
+        #=type STRING[SIZV]
+        #=read Yes
+        #=write Yes
+    }
+    field(OVAL,DBF_NOACCESS) {
+        prompt("Old Value")
+        special(SPC_DBADDR)
+        interest(3)
+        extra("char *oval")
+        #=type STRING[SIZV]
+        #=read Yes
+        #=write No
+    }
+    field(SIZV,DBF_USHORT) {
+        prompt("Size of buffers")
+        promptgroup("40 - Input")
+        special(SPC_NOMOD)
+        interest(1)
+        initial("41")
+    }
+    field(LEN,DBF_ULONG) {
+        prompt("Length of VAL")
+        special(SPC_NOMOD)
+    }
+    field(OLEN,DBF_ULONG) {
+        prompt("Length of OVAL")
+        special(SPC_NOMOD)
+    }
+    field(INP,DBF_INLINK) {
+        prompt("Input Specification")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+
+=head3 Monitor Parameters
+
+These parameters are used to specify when the monitor post should be sent by the
+C<monitor()> routine. There are two possible choices:
+
+APST is used for archiver monitors and MPST  for all other type of monitors.
+
+=fields MPST, APST
+
+=cut
+
+    field(MPST,DBF_MENU) {
+        prompt("Post Value Monitors")
+        promptgroup("80 - Display")
+        interest(1)
+        menu(menuPost)
+    }
+    field(APST,DBF_MENU) {
+        prompt("Post Archive Monitors")
+        promptgroup("80 - Display")
+        interest(1)
+        menu(menuPost)
+    }
+
+=head3 Operator Display Parameters
+
+See L<Fields Common to All Record Types> for more on the record name (NAME) and
+description (DESC) fields.
+
+=fields NAME, DESC
+
+=head3 Alarm Parameters
+
+The long string input record has the alarm parameters common to all record
+types. L<Alarm Fields> lists other fields related to a alarms that are common to
+all record types.
+
+=head3 Run-time and Simulation Mode Parameters
+
+The old value field (OVAL) of the long string input record is used to implement
+value change monitors for VAL. If VAL is not equal to OVAL, then monitors are
+triggered. LEN contains the length of the string in VAL, OLEN contains the
+length of the string in OVAL.
+
+=fields OVAL, LEN, OLEN
+
+
+The following fields are used to operate the string input in the simulation
+mode. See L<Simulation Mode> for more information on simulation mode fields.
+
+=fields SIOL, SIML, SIMM, SIMS
+
+=cut
+
+    field(SIML,DBF_INLINK) {
+        prompt("Simulation Mode Link")
+        promptgroup("90 - Simulate")
+        interest(2)
+    }
+    field(SIMM,DBF_MENU) {
+        prompt("Simulation Mode")
+        interest(2)
+        menu(menuYesNo)
+    }
+    field(SIMS,DBF_MENU) {
+        prompt("Simulation Mode Severity")
+        promptgroup("90 - Simulate")
+        interest(2)
+        menu(menuAlarmSevr)
+    }
+    field(SIOL,DBF_INLINK) {
+        prompt("Sim Input Specifctn")
+        promptgroup("90 - Simulate")
+        interest(2)
+    }
+}
+
+
+
+=head2 Device Support Interface
+
+The record requires device support to provide an entry table (dset) which
+defines the following members:
+
+ typedef struct {
+     long number;
+     long (*report)(int level);
+     long (*init)(int after);
+     long (*init_record)(lsiRecord *prec);
+     long (*get_ioint_info)(int cmd, lsiRecord *prec, IOSCANPVT *piosl);
+     long (*read_string)(lsiRecord *prec);
+ } lsidset;
+
+The module must set C<number> to at least 5, and provide a pointer to its
+C<read_string()> routine; the other function pointers may be C<NULL> if their
+associated functionality is not required for this support layer.
+Most device supports also provide an C<init_record()> routine to configure the
+record instance and connect it to the hardware or driver support layer.
+
+=head2 Device Support for Soft Records
+
+A device support module for DTYP C<Soft Channel> is provided for retrieving
+values from other records or other software components.
+
+Device support for DTYP C<getenv> is provided for retrieving strings from
+environment variables. C<INST_IO> addressing C<< @<environment variable> >> is
+used on the C<INP> link field to select the desired environment variable.
+
+=cut
--- a/src/std/rec/lsoRecord.dbd
+++ b/src/std/rec/lsoRecord.dbd
@@ -1,112 +0,0 @@
-#*************************************************************************
-# Copyright (c) 2012 UChicago Argonne LLC, as Operator of Argonne
-#     National Laboratory.
-# EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution.
-#*************************************************************************
-
-recordtype(lso) {
-    include "dbCommon.dbd" 
-    %#include "devSup.h"
-    %
-    %/* Declare Device Support Entry Table */
-    %typedef struct lsodset {
-    %    long number;
-    %    DEVSUPFUN report;
-    %    DEVSUPFUN init;
-    %    DEVSUPFUN init_record;
-    %    DEVSUPFUN get_ioint_info;
-    %    DEVSUPFUN write_string;
-    %} lsodset;
-    %
-    field(VAL,DBF_NOACCESS) {
-        prompt("Current Value")
-        asl(ASL0)
-        pp(TRUE)
-        special(SPC_DBADDR)
-        extra("char *val")
-    }
-    field(OVAL,DBF_NOACCESS) {
-        prompt("Previous Value")
-        special(SPC_DBADDR)
-        interest(3)
-        extra("char *oval")
-    }
-    field(SIZV,DBF_USHORT) {
-        prompt("Size of buffers")
-        promptgroup("50 - Output")
-        special(SPC_NOMOD)
-        interest(1)
-        initial("41")
-    }
-    field(LEN,DBF_ULONG) {
-        prompt("Length of VAL")
-        special(SPC_NOMOD)
-    }
-    field(OLEN,DBF_ULONG) {
-        prompt("Length of OVAL")
-        special(SPC_NOMOD)
-        interest(3)
-    }
-    field(DOL,DBF_INLINK) {
-        prompt("Desired Output Link")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(IVOA,DBF_MENU) {
-        prompt("INVALID Output Action")
-        promptgroup("50 - Output")
-        interest(2)
-        menu(menuIvoa)
-    }
-    field(IVOV,DBF_STRING) {
-        prompt("INVALID Output Value")
-        promptgroup("50 - Output")
-        interest(2)
-        size(40)
-    }
-    field(OMSL,DBF_MENU) {
-        prompt("Output Mode Select")
-        promptgroup("50 - Output")
-        interest(1)
-        menu(menuOmsl)
-    }
-    field(OUT,DBF_OUTLINK) {
-        prompt("Output Specification")
-        promptgroup("50 - Output")
-        interest(1)
-    }
-    field(MPST,DBF_MENU) {
-        prompt("Post Value Monitors")
-        promptgroup("80 - Display")
-        interest(1)
-        menu(menuPost)
-    }
-    field(APST,DBF_MENU) {
-        prompt("Post Archive Monitors")
-        promptgroup("80 - Display")
-        interest(1)
-        menu(menuPost)
-    }
-    field(SIML,DBF_INLINK) {
-        prompt("Sim Mode link")
-        promptgroup("90 - Simulate")
-        interest(1)
-    }
-    field(SIMM,DBF_MENU) {
-        prompt("Simulation Mode")
-        interest(1)
-        menu(menuYesNo)
-    }
-    field(SIMS,DBF_MENU) {
-        prompt("Sim mode Alarm Svrty")
-        promptgroup("90 - Simulate")
-        interest(2)
-        menu(menuAlarmSevr)
-    }
-    field(SIOL,DBF_OUTLINK) {
-        prompt("Sim Output Specifctn")
-        promptgroup("90 - Simulate")
-        interest(1)
-    }
-}
--- a/src/std/rec/lsoRecord.dbd.pod
+++ b/src/std/rec/lsoRecord.dbd.pod
@@ -0,0 +1,272 @@
+#*************************************************************************
+# Copyright (c) 2012 UChicago Argonne LLC, as Operator of Argonne
+#     National Laboratory.
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution.
+#*************************************************************************
+
+
+=title Long String Output Record (lso)
+
+The long string output record is used to write an arbitrary ASCII string with a
+maximum length of 65535 characters.
+
+=head2 Parameter Fields
+
+The record-specific fields are described below, grouped by functionality.
+
+=recordtype lso
+
+=cut
+
+include "menuIvoa.dbd"
+
+recordtype(lso) {
+
+=head3 Scan Parameters
+
+The long string output record has the standard fields for specifying under what
+circumstances it will be processed. These fields are listed in L<Scan Fields>.
+In addition, L<Scanning Specification> explains how these fields are used.
+
+=head3 Desired Output Parameters
+
+The long string output record must specify from where it gets its desired output
+string. The first field that determines where the desired output originates is
+the output mode select (OMSL) field, which can have two possible value:
+C<closed_loop> or C<supervisory>. If C<supervisory> is specified, DOL is
+ignored, the current value of VAL is written, and VAL can be changed externally
+via dbPuts at run-time. If C<closed_loop> is specified, the VAL field's value is
+obtained from the address specified in the desired output location field (DOL)
+which can be either a database link or a channel access link.
+
+The maximum number of characters in VAL is given by SIZV, and cannot be larger
+than 65535.
+
+DOL can also be a constant in addition to a link, in which case VAL is
+initialized to the constant value. Your string constant, however, may be
+interpreted as a CA link name. If you want to initialize your string output
+record, it is therefore best to use the VAL field. Note that if DOL is a
+constant, OMSL cannot be C<closed_loop>.
+
+See L<Address Specification> for information on specifying links.
+
+=fields VAL, SIZV, DOL, OMSL
+
+=head3 Output Specification
+
+The output link specified in the OUT field specifies where the long string
+output record is to write its string. The link can be a database or channel
+access link. If the OUT field is a constant, no output will be written.
+
+See L<Address Specification> for information on specifying links.
+
+In addition, the appropriate device support module must be entered into the DTYP
+field.
+
+
+=fields OUT, DTYP
+
+=head3 Monitor Parameters
+
+These parameters are used to specify when the monitor post should be sent by the
+C<monitor()> routine. There are two possible choices:
+
+APST is used for archiver monitors and MPST  for all other type of monitors.
+
+=fields MPST, APST
+
+
+=head3 Operator Display Parameters
+
+See L<Fields Common to All Record Types> for more on the record name (NAME) and
+description (DESC) fields.
+
+=fields NAME, DESC
+
+=head3 Alarm Parameters
+
+The long string input record has the alarm parameters common to all record
+types. L<Alarm Fields> lists other fields related to a alarms that are common to
+all record types.
+
+The IVOA field specifies an action to take when the INVALID alarm is triggered.
+There are three possible actions:
+
+=head4 Menu menuIvoa
+
+=menu menuIvoa
+
+When C<<< Set output to IVOV >>>, the value contained in the IVOV field is
+written to the output link during an alarm condition. See
+L<Invalid Alarm Output Action>
+for more information on the IVOA and IVOV fields.
+L<Alarm Fields>
+lists other fields related to a alarms that are common to all record types.
+
+=fields IVOA, IVOV
+
+=cut
+
+    include "dbCommon.dbd"
+    %#include "devSup.h"
+    %
+    %/* Declare Device Support Entry Table */
+    %typedef struct lsodset {
+    %    long number;
+    %    DEVSUPFUN report;
+    %    DEVSUPFUN init;
+    %    DEVSUPFUN init_record;
+    %    DEVSUPFUN get_ioint_info;
+    %    DEVSUPFUN write_string;
+    %} lsodset;
+    %
+    field(VAL,DBF_NOACCESS) {
+        prompt("Current Value")
+        asl(ASL0)
+        pp(TRUE)
+        special(SPC_DBADDR)
+        extra("char *val")
+        #=type STRING[SIZV]
+        #=read Yes
+        #=write Yes
+    }
+    field(OVAL,DBF_NOACCESS) {
+        prompt("Previous Value")
+        special(SPC_DBADDR)
+        interest(3)
+        extra("char *oval")
+        #=type STRING[SIZV]
+        #=read Yes
+        #=write No
+    }
+    field(SIZV,DBF_USHORT) {
+        prompt("Size of buffers")
+        promptgroup("50 - Output")
+        special(SPC_NOMOD)
+        interest(1)
+        initial("41")
+    }
+    field(LEN,DBF_ULONG) {
+        prompt("Length of VAL")
+        special(SPC_NOMOD)
+    }
+    field(OLEN,DBF_ULONG) {
+        prompt("Length of OVAL")
+        special(SPC_NOMOD)
+        interest(3)
+    }
+    field(DOL,DBF_INLINK) {
+        prompt("Desired Output Link")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    field(IVOA,DBF_MENU) {
+        prompt("INVALID Output Action")
+        promptgroup("50 - Output")
+        interest(2)
+        menu(menuIvoa)
+    }
+    field(IVOV,DBF_STRING) {
+        prompt("INVALID Output Value")
+        promptgroup("50 - Output")
+        interest(2)
+        size(40)
+    }
+    field(OMSL,DBF_MENU) {
+        prompt("Output Mode Select")
+        promptgroup("50 - Output")
+        interest(1)
+        menu(menuOmsl)
+    }
+    field(OUT,DBF_OUTLINK) {
+        prompt("Output Specification")
+        promptgroup("50 - Output")
+        interest(1)
+    }
+    field(MPST,DBF_MENU) {
+        prompt("Post Value Monitors")
+        promptgroup("80 - Display")
+        interest(1)
+        menu(menuPost)
+    }
+    field(APST,DBF_MENU) {
+        prompt("Post Archive Monitors")
+        promptgroup("80 - Display")
+        interest(1)
+        menu(menuPost)
+    }
+
+
+=head3 Run-time and Simulation Mode Parameters
+
+The old value field (OVAL) of the long string input record is used to implement
+value change monitors for VAL. If VAL is not equal to OVAL, then monitors are
+triggered. LEN contains the length of the string in VAL, OLEN contains the
+length of the string in OVAL.
+
+=fields OVAL, LEN, OLEN
+
+The following fields are used to operate the string input in the simulation
+mode. See L<Simulation Mode> for more information on simulation mode fields.
+
+=fields SIOL, SIML, SIMM, SIMS
+
+=cut
+
+    field(SIML,DBF_INLINK) {
+        prompt("Sim Mode link")
+        promptgroup("90 - Simulate")
+        interest(1)
+    }
+    field(SIMM,DBF_MENU) {
+        prompt("Simulation Mode")
+        interest(1)
+        menu(menuYesNo)
+    }
+    field(SIMS,DBF_MENU) {
+        prompt("Sim mode Alarm Svrty")
+        promptgroup("90 - Simulate")
+        interest(2)
+        menu(menuAlarmSevr)
+    }
+    field(SIOL,DBF_OUTLINK) {
+        prompt("Sim Output Specifctn")
+        promptgroup("90 - Simulate")
+        interest(1)
+    }
+}
+
+
+
+=head2 Device Support Interface
+
+The record requires device support to provide an entry table (dset) which
+defines the following members:
+
+ typedef struct {
+     long number;
+     long (*report)(int level);
+     long (*init)(int after);
+     long (*init_record)(lsoRecord *prec);
+     long (*get_ioint_info)(int cmd, lsoRecord *prec, IOSCANPVT *piosl);
+     long (*write_string)(lsoRecord *prec);
+ } lsodset;
+
+The module must set C<number> to at least 5, and provide a pointer to its
+C<write_string()> routine; the other function pointers may be C<NULL> if their
+associated functionality is not required for this support layer.
+Most device supports also provide an C<init_record()> routine to configure the
+record instance and connect it to the hardware or driver support layer.
+
+
+=head2 Device Support for Soft Records
+
+Device support for DTYP C<Soft Channel> is provided for writing values to other
+records or other software components.
+
+Device support for DTYP C<stdio> is provided for writing values to the stdout,
+stderr, or errlog streams. C<INST_IO> addressing C<@stdout>, C<@stderr> or
+C<@errlog> is used on the OUT link field to select the desired stream.
+
+=cut
--- a/src/std/rec/printfRecord.dbd
+++ b/src/std/rec/printfRecord.dbd
@@ -1,109 +0,0 @@
-#*************************************************************************
-# Copyright (c) 2012 UChicago Argonne LLC, as Operator of Argonne
-#     National Laboratory.
-# EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution. 
-#*************************************************************************
-
-recordtype(printf) {
-    include "dbCommon.dbd"
-    %#include "devSup.h"
-    %
-    %/* Declare Device Support Entry Table */
-    %typedef struct printfdset {
-    %    long number;
-    %    DEVSUPFUN report;
-    %    DEVSUPFUN init;
-    %    DEVSUPFUN init_record;
-    %    DEVSUPFUN get_ioint_info;
-    %    DEVSUPFUN write_string;
-    %} printfdset;
-    %
-    field(VAL,DBF_NOACCESS) {
-        prompt("Result")
-        asl(ASL0)
-        pp(TRUE)
-        special(SPC_DBADDR)
-        extra("char *val")
-    }
-    field(SIZV,DBF_USHORT) {
-        prompt("Size of VAL buffer")
-        promptgroup("30 - Action")
-        special(SPC_NOMOD)
-        interest(1)
-        initial("41")
-    }
-    field(LEN,DBF_ULONG) {
-        prompt("Length of VAL")
-        special(SPC_NOMOD)
-    }
-    field(OUT,DBF_OUTLINK) {
-        prompt("Output Specification")
-        promptgroup("50 - Output")
-        interest(1)
-    }
-    field(FMT,DBF_STRING) {
-        prompt("Format String")
-        promptgroup("30 - Action")
-        pp(TRUE)
-        size(81)
-    }
-    field(IVLS,DBF_STRING) {
-        prompt("Invalid Link String")
-        promptgroup("30 - Action")
-        size(16)
-        initial("LNK")
-    }
-    field(INP0,DBF_INLINK) {
-        prompt("Input 0")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(INP1,DBF_INLINK) {
-        prompt("Input 1")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(INP2,DBF_INLINK) {
-        prompt("Input 2")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(INP3,DBF_INLINK) {
-        prompt("Input 3")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(INP4,DBF_INLINK) {
-        prompt("Input 4")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(INP5,DBF_INLINK) {
-        prompt("Input 5")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(INP6,DBF_INLINK) {
-        prompt("Input 6")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(INP7,DBF_INLINK) {
-        prompt("Input 7")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(INP8,DBF_INLINK) {
-        prompt("Input 8")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    field(INP9,DBF_INLINK) {
-        prompt("Input 9")
-        promptgroup("40 - Input")
-        interest(1)
-    }
-    %/* Number of INPx fields defined */
-    %#define PRINTF_NLINKS 10
-}
--- a/src/std/rec/printfRecord.dbd.pod
+++ b/src/std/rec/printfRecord.dbd.pod
@@ -0,0 +1,323 @@
+#*************************************************************************
+# Copyright (c) 2012 UChicago Argonne LLC, as Operator of Argonne
+#     National Laboratory.
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution.
+#*************************************************************************
+
+
+=title Printf Record (printf)
+
+The printf record is used to generate and write a string using a format
+specification and parameters, analogous to the C C<printf()> function.
+
+=head2 Parameter Fields
+
+The record-specific fields are described below, grouped by functionality.
+
+=recordtype printf
+
+=cut
+
+recordtype(printf) {
+
+=head3 Scan Parameters
+
+The printf record has the standard fields for specifying under what
+circumstances it will be processed. These fields are listed in L<Scan Fields>.
+In addition, L<Scanning Specification> explains how these fields are used.
+
+=head3 String Generation Parameters
+
+The printf record must specify the desired output string with embedded format
+specifiers in the FMT field. Plain characters are copied directly to the output
+string. A pair of percent characters 'C<%%>' are converted into a single percent
+character in the output string. A single precent character 'C<%>' introduces a
+format specifier and is followed by zero or more of the standard C<printf()>
+format flags and modifiers:
+
+=over 4
+
+=item *
+
+Plus ('C<+>')
+
+=item *
+
+Minus ('C<->')
+
+=item *
+
+Space ('C< >')
+
+=item *
+
+Hash ('C<#>')
+
+=item *
+
+Minimum Field Width (decimal digits or 'C<*>')
+
+=item *
+
+Precision ('C<.>' followed by decimal digits or 'C<*>')
+
+=item *
+
+Length Modifier 'C<hh>' E<ndash> Reads link as DBR_CHAR or DBR_UCHAR
+
+=item *
+
+Length Modifier 'C<h>' E<ndash> Reads link as DBR_SHORT or DBR_USHORT for
+integer conversions, DBR_FLOAT for floating-point conversions.
+
+=item *
+
+Length Modifier 'C<l>' E<ndash> Reads link as DBR_LONG or DBR_ULONG for integer
+conversions, array of DBR_CHAR for string conversion.
+
+=back
+
+
+The following character specifies the conversion to perform, see your operating
+system's C<printf()> documentation for more details. These conversions
+ultimately call the C<snprintf()> routine for the actual string conversion
+process, so are subject to the behaviour of that routine.
+
+=over 4
+
+=item  *
+
+'C<c>' E<ndash> Convert to a character. Only single byte characters are
+permitted.
+
+=item  *
+
+'C<d>' or 'C<i>' E<ndash> Convert to a decimal integer.
+
+=item  *
+
+'C<o>' E<ndash> Convert to an unsigned octal integer.
+
+=item  *
+
+'C<u>' E<ndash> Convert to an unsigned decimal integer.
+
+=item  *
+
+'C<x>' E<ndash> Convert to an unsigned hexadecimal integer, using C<abcdef>.
+
+=item  *
+
+'C<X>' E<ndash> Convert to an unsigned hexadecimal integer, using C<ABCDEF>.
+
+=item *
+
+'C<e>' or 'C<E>' E<ndash> Convert to floating-point in exponent style, reading
+the link as DBR_DOUBLE or DBR_FLOAT.
+
+=item *
+
+'C<f>' or 'C<F>' E<ndash> Convert to floating-point in fixed-point style,
+reading the link as DBR_DOUBLE or DBR_FLOAT.
+
+=item *
+
+'C<g>' or 'C<G>' E<ndash> Convert to floating-point in general style, reading
+the link as DBR_DOUBLE or DBR_FLOAT.
+
+=item *
+
+'C<s>' E<ndash> Insert string, reading the link as DBR_STRING or array of
+DBR_CHAR.
+
+=back
+
+The fields INP0 ... INP9 are input links that provide the parameter values to be
+formatted into the output. The format specifiers in the FMT string determine
+which type of the data is requested through the appropriate input link. As with
+C<printf()> a C<*> character may be used in the format to specify width and/or
+precision instead of numeric literals, in which case additional input links are
+used to provide the necessary integer parameter or parameters. See L<Address
+Specification> for information on specifying links.
+
+The formatted string is written to the VAL field.  The maximum number of
+characters in VAL is given by SIZV, and cannot be larger than 65535. The LEN
+field contains the length of the formatted string in the VAL field.
+
+=fields FMT, INP0, INP1, INP2, INP3, INP4, INP5, INP6, INP7, INP8, INP9, VAL, SIZV, LEN
+
+
+=head3 Output Specification
+
+The output link specified in the OUT field specifies where the printf record is
+to write the contents of  its VAL field. The link can be a database or channel
+access link. If the OUT field is a constant, no output will be written.
+
+See L<Address Specification> for information on specifying links.
+
+In addition, the appropriate device support module must be entered into the DTYP
+field.
+
+=fields OUT, DTYP
+
+=head3 Operator Display Parameters
+
+See L<Fields Common to All Record Types> for more on the record name (NAME) and
+description (DESC) fields.
+
+=fields NAME, DESC
+
+=cut
+
+    include "dbCommon.dbd"
+    %#include "devSup.h"
+    %
+    %/* Declare Device Support Entry Table */
+    %typedef struct printfdset {
+    %    long number;
+    %    DEVSUPFUN report;
+    %    DEVSUPFUN init;
+    %    DEVSUPFUN init_record;
+    %    DEVSUPFUN get_ioint_info;
+    %    DEVSUPFUN write_string;
+    %} printfdset;
+    %
+    field(VAL,DBF_NOACCESS) {
+        prompt("Result")
+        asl(ASL0)
+        pp(TRUE)
+        special(SPC_DBADDR)
+        extra("char *val")
+        #=type STRING[SIZV]
+        #=read Yes
+        #=write Yes
+    }
+    field(SIZV,DBF_USHORT) {
+        prompt("Size of VAL buffer")
+        promptgroup("30 - Action")
+        special(SPC_NOMOD)
+        interest(1)
+        initial("41")
+    }
+    field(LEN,DBF_ULONG) {
+        prompt("Length of VAL")
+        special(SPC_NOMOD)
+    }
+    field(OUT,DBF_OUTLINK) {
+        prompt("Output Specification")
+        promptgroup("50 - Output")
+        interest(1)
+    }
+    field(FMT,DBF_STRING) {
+        prompt("Format String")
+        promptgroup("30 - Action")
+        pp(TRUE)
+        size(81)
+    }
+
+
+=head3 Alarm Parameters
+
+The printf record has the alarm parameters common to all record types.
+L<Alarm Fields> lists other fields related to a alarms that are common to all
+record types.
+
+The IVLS field specifies a string which is sent to the OUT link if if input
+link data are invalid.
+
+=fields IVLS
+
+=cut
+
+    field(IVLS,DBF_STRING) {
+        prompt("Invalid Link String")
+        promptgroup("30 - Action")
+        size(16)
+        initial("LNK")
+    }
+    field(INP0,DBF_INLINK) {
+        prompt("Input 0")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    field(INP1,DBF_INLINK) {
+        prompt("Input 1")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    field(INP2,DBF_INLINK) {
+        prompt("Input 2")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    field(INP3,DBF_INLINK) {
+        prompt("Input 3")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    field(INP4,DBF_INLINK) {
+        prompt("Input 4")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    field(INP5,DBF_INLINK) {
+        prompt("Input 5")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    field(INP6,DBF_INLINK) {
+        prompt("Input 6")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    field(INP7,DBF_INLINK) {
+        prompt("Input 7")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    field(INP8,DBF_INLINK) {
+        prompt("Input 8")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    field(INP9,DBF_INLINK) {
+        prompt("Input 9")
+        promptgroup("40 - Input")
+        interest(1)
+    }
+    %/* Number of INPx fields defined */
+    %#define PRINTF_NLINKS 10
+}
+
+
+=head2 Device Support Interface
+
+The record requires device support to provide an entry table (dset) which
+defines the following members:
+
+ typedef struct {
+     long number;
+     long (*report)(int level);
+     long (*init)(int after);
+     long (*init_record)(printfRecord *prec);
+     long (*get_ioint_info)(int cmd, printfRecord *prec, IOSCANPVT *piosl);
+     long (*write_string)(printfRecord *prec);
+ } printfdset;
+
+The module must set C<number> to at least 5, and provide a pointer to its
+C<write_string()> routine; the other function pointers may be C<NULL> if their
+associated functionality is not required for this support layer.
+Most device supports also provide an C<init_record()> routine to configure the
+record instance and connect it to the hardware or driver support layer.
+
+=head2 Device Support for Soft Records
+
+A soft device support module Soft Channel is provided for writing values to
+other records  or other software components.
+
+Device support for DTYP C<stdio> is provided for writing values to the stdout,
+stderr, or errlog streams. C<INST_IO> addressing C<@stdout>, C<@stderr> or
+C<@errlog> is used on the OUT link field to select the desired stream.
+
+=cut
--- a/src/std/rec/stringinRecord.dbd.pod
+++ b/src/std/rec/stringinRecord.dbd.pod
@@ -42,7 +42,7 @@ The string input record has the standard fields for specifying under what
 circumstances it will be processed. These fields are listed in L<Scan Fields>.
 In addition, L<Scanning Specification> explains how these fields are used.

-=head3 Read Parameters
+=head3 Input Specification

 The INP field determines where the string input record gets its string. It can
 be a database or channel access link, or a constant. If constant, the VAL field
@@ -112,8 +112,6 @@ monitors for VAL. If VAL is not equal to OVAL, then monitors are triggered.

 =fields OVAL

-
-
 The following fields are used to operate the string input in the simulation
 mode. See L<Simulation Mode> for more information on simulation mode fields.

@@ -251,15 +249,48 @@ routines are primarily interested in the following fields:

 =fields PACT, DPVT, UDF, VAL, INP

-=head3 Device Support Routines (devSiSoft.c)
+=head3 Device Support Routines
+
+Device support consists of the following routines:
+
+=head4 report
+
+  long report(int level)
+
+This optional routine is called by the IOC command C<dbior> and is passed the
+report level that was requested by the user.
+It should print a report on the state of the device support to stdout.
+The C<level> parameter may be used to output increasingly more detailed
+information at higher levels, or to select different types of information with
+different levels.
+Level zero should print no more than a small summary.
+
+=head4 init
+
+  long init(int after)
+
+This optional routine is called twice at IOC initialization time.
+The first call happens before any of the C<init_record()> calls are made, with
+the integer parameter C<after> set to 0.
+The second call happens after all of the C<init_record()> calls have been made,
+with C<after> set to 1.

 =head4 init_record

-  long init_record(stringinRecord *prec)
+  long init_record(dbCommon *prec)

 This routine is optional. If provided, it is called by the record support
 C<init_record()> routine.

+=head4 get_ioint_info
+
+  long get_ioint_info(int cmd, dbCommon *precord, IOSCANPVT *ppvt)
+
+This routine is called by the ioEventScan system each time the record is added
+or deleted from an I/O event scan list. C<cmd> has the value (0,1) if the
+record is being (added to, deleted from) an I/O event list. It must be
+provided for any device type that can use the ioEvent scanner.
+
 =head4 read_stringin

  long read_stringin(stringinRecord *prec)
@@ -276,17 +307,11 @@ This routine must provide a new input value. It returns the following values:

 =head3 Device Support for Soft Records

-The C<<< Soft Channel >>> module places a value directly in VAL.
+The C<<< Soft Channel >>> module reads a value directly into VAL.

-If the INP link type is constant, the double constant, if non-zero, is converted
-to a string and stored into VAL by C<init_record()>, and UDF is set to FALSE. If
-the INP link type is PV_LINK, then dbCaAddInlink is called by C<init_record()>.
-
-read_stringin calls recGblGetLinkValue to read the current value of VAL. See
-L<Soft Input>.
-
-If the return status of recGblGetLinkValue is zero, then read_stringin sets UDF
-to FALSE. The status of recGblGetLinkValue is returned.
+Device support for DTYP C<getenv> is provided for retrieving strings from environment variables.
+C<INST_IO> addressing C!!@<environment variable> !!is used on the C<INP> link field to select the
+desired environment variable.

 =cut

--- a/src/std/rec/stringoutRecord.dbd.pod
+++ b/src/std/rec/stringoutRecord.dbd.pod
@@ -48,7 +48,7 @@ explains how these fields are used.

 The string output record must specify from where it gets its desired output
 string. The first field that determines where the desired output originates is
-the output mode select (OSML) field, which can have two possible value: C<<<
+the output mode select (OMSL) field, which can have two possible value: C<<<
 closed_loop >>> or C<<< supervisory >>>. If C<<< supervisory >>> is specified,
 DOL is ignored, the current value of VAL is written, and the VAL can be changed
 externally via dbPuts at run-time. If C<<< closed_loop >>> is specified, the VAL
@@ -80,7 +80,7 @@ for information on specifying links.
 		menu(menuOmsl)
 	}

-=head3 Write Parameters
+=head3 Output Specification

 The output link specified in the OUT field specifies where the string output
 record is to write its string. The link can be a database or channel access
@@ -334,7 +334,47 @@ primarily interested in the following fields:

 =fields PACT, DPVT, NSEV, NSTA, VAL, OUT

-=head3 Device Support Routines (devSoSoft.c)
+=head3 Device Support Routines
+
+Device support consists of the following routines:
+
+=head4 report
+
+  long report(int level)
+
+This optional routine is called by the IOC command C<dbior> and is passed the
+report level that was requested by the user.
+It should print a report on the state of the device support to stdout.
+The C<level> parameter may be used to output increasingly more detailed
+information at higher levels, or to select different types of information with
+different levels.
+Level zero should print no more than a small summary.
+
+=head4 init
+
+  long init(int after)
+
+This optional routine is called twice at IOC initialization time.
+The first call happens before any of the C<init_record()> calls are made, with
+the integer parameter C<after> set to 0.
+The second call happens after all of the C<init_record()> calls have been made,
+with C<after> set to 1.
+
+=head4 init_record
+
+  long init_record(dbCommon *prec)
+
+This routine is optional. If provided, it is called by the record support
+C<init_record()> routine.
+
+=head4 get_ioint_info
+
+  long get_ioint_info(int cmd, dbCommon *precord, IOSCANPVT *ppvt)
+
+This routine is called by the ioEventScan system each time the record is added
+or deleted from an I/O event scan list. C<cmd> has the value (0,1) if the
+record is being (added to, deleted from) an I/O event list. It must be
+provided for any device type that can use the ioEvent scanner.

 =head4 write_stringout

@@ -354,11 +394,9 @@ This routine must output a new value. It returns the following values:

 The C<<< Soft Channel >>> device support module writes the current value of VAL.

-If the OUT link type is PV_LINK, then dbCaAddInlink is called by
-C<init_record()>.
-
-write_so calls recGblPutLinkValue to write the current value of VAL. See
-L<Soft Output>.
+Device support for DTYP C<stdio> is provided for writing values to the stdout,
+stderr, or errlog streams. C<INST_IO> addressing C<@stdout>, C<@stderr> or
+C<@errlog> is used on the OUT link field to select the desired stream.

 =cut

--- a/src/std/rec/subArrayRecord.dbd.pod
+++ b/src/std/rec/subArrayRecord.dbd.pod
@@ -49,7 +49,7 @@ L<Address Specification>
 for information on specifying links.

 In addition, the DTYP field must specify a device support module. Currently, the
-only device support module is C<<< Soft Channel >>>.
+only device support module is C<Soft Channel>.

 =fields INP, DTYP

@@ -59,13 +59,13 @@ These parameters determine the number of array elements (the array length) and
 the data type of those elements. The Field Type of Value (FTVL) field determines
 the data type of the array.

-The user specifies the maximum number of elements allowed in the subarray in the
-MALM field. Generally, the number should be equal to the number of elements of
-the Waveform array (found in the Waveform's NELM field). The MALM field is used
-to allocate memory. The subArray's Number of Elements (NELM) field is where the
-user specifies the actual number of elements that the subArray will contain. It
-should of course be no greater than MALM; if it is, the record processing
-routine sets it equal to MALM.
+The user specifies the maximum number of elements that can be read into the
+subarray in the MALM field. This number should normally be equal to the number
+of elements of the Waveform array (found in the Waveform's NELM field). The MALM
+field is used to allocate memory. The subArray's Number of Elements (NELM) field
+is where the user specifies the actual number of elements that the subArray will
+extract. It should of course be no greater than MALM; if it is, the record
+processing routine sets it equal to MALM.

 The INDX field determines the offset of the subArray record's array in relation
 to the Waveform's. For instance, if INDX is 2, then the subArray will read NELM
@@ -83,15 +83,15 @@ display the value and other parameters of the subarray record either textually
 or graphically.

 EGU is a string of up to 16 characters describing the engineering units (if any)
-of the values which the subArray holds. It is retrieved by the C<<< get_units
->>> record support routine.
+of the values which the subArray holds. It is retrieved by the C<get_units()>
+record support routine.

 The HOPR and LOPR fields set the upper and lower display limits for the
-sub-array elements. Both the C<<< get_graphic_double >>> and C<<<
-get_control_double >>> record support routines retrieve these fields.
+sub-array elements. Both the C<get_graphic_double()> and C<get_control_double()>
+record support routines retrieve these fields.

 The PREC field determines the floating point precision with which to display
-VAL. It is used whenever the C<<< get_precision >>> record support routine is
+VAL. It is used whenever the C<get_precision()> record support routine is
 called.

 See L<Fields Common to All Record Types>
@@ -110,9 +110,9 @@ record types.
 These fields are not configurable by the user. They are used for the record's
 internal processing or to represent the current state of the record.

-The NORD field holds a counter of the number of elements read into the array. It
-can be less than NELM even after the array is full if NELM exceeds the number of
-existing elements in the referenced array, i.e., the Waveform's array.
+The NORD field holds the number of elements that were actually read into the
+array. It will be less than NELM whenever the sum of the NELM and INDX fields
+exceeds the number of existing elements found in the source array.

 BPTR contains a pointer to the record's array.

@@ -150,14 +150,14 @@ See L<Record Processing>.

  long (*cvt_dbaddr)(struct dbAddr *paddr)

-This is called by dbNameToAddr. It makes the dbAddr structure refer to the
+This is called by C<dbNameToAddr()>. It makes the dbAddr structure refer to the
 actual buffer holding the result.

 =head4 get_array_info

  long (*get_array_info)(struct dbAddr *paddr, long *no_elements, long *offset)

-Retrieves NELM.
+Retrieves NORD.

 =head4 put_array_info

@@ -171,14 +171,14 @@ Sets NORD.

 For the elements in the array, this routine routines HOPR and LOPR. For the INDX
 field, this routine returns MALM - 1 and 0. For NELM, it returns MALM and 1. For
-other fields, it calls C<<< recGblGetGraphicDouble() >>>.
+other fields, it calls C<recGblGetGraphicDouble()>.

 =head4 get_control_double

  long (*get_control_double)(struct dbAddr *paddr, struct dbr_ctrlDouble *p)

-For array elements, this routine retrieves HOPR and LOPR. Otherwise, C<<<
-recGblGetControlDouble() >>> is called.
+For array elements, this routine retrieves HOPR and LOPR. Otherwise,
+C<recGblGetControlDouble()> is called.

 =head4 get_units

@@ -212,13 +212,13 @@ INDX is greater than or equal to MALM it is set to MALM-1.

 =item 3.

-Call device support read routine. This routine is expected to place the desired
-sub-array at the beginning of the buffer and set NORD to the number of elements
-of the sub-array that were read.
+Call the device support's C<read_sa()> routine. This routine is expected to
+place the desired sub-array at the beginning of the buffer and set NORD to the
+number of elements of the sub-array that were read.

 =item 4.

-If PACT has been changed to TRUE, the device support read routine has started
+If PACT has been changed to TRUE, the device support read operation has started
 but has not completed writing the new value. In this case, the processing
 routine merely returns, leaving PACT TRUE. Otherwise, process sets PACT TRUE at
 this time. This asynchronous processing logic is not currently used but has been
@@ -305,12 +305,11 @@ sub-array were acquired.

 =head3 Device Support For Soft Records

-Only the device support module C<<< Soft Channel >>> is currently provided. The
-INP link type must be either DB_LINK or CA_LINK.
+Only the device support module C<Soft Channel> is currently provided.

 =head4 Soft Channel

-INP is expected to point to a waveform record.
+INP is expected to point to an array field of a waveform record or similar.

 =cut

--- a/src/std/rec/waveformRecord.dbd.pod
+++ b/src/std/rec/waveformRecord.dbd.pod
@@ -303,7 +303,9 @@ interested in the following fields:

 Device support consists of the following routines:

-=head4 long report(int level)
+=head4 report
+
+  long report(int level)

 This optional routine is called by the IOC command C<dbior> and is passed the
 report level that was requested by the user.
@@ -313,7 +315,9 @@ information at higher levels, or to select different types of information with
 different levels.
 Level zero should print no more than a small summary.

-=head4 long init(int after)
+=head4 init
+
+  long init(int after)

 This optional routine is called twice at IOC initialization time.
 The first call happens before any of the C<init_record()> calls are made, with
@@ -323,14 +327,14 @@ with C<after> set to 1.

 =head4 init_record

-  init_record(precord)
+  long init_record(dbCommon *precord)

 This routine is optional. If provided, it is called by the record support
 C<init_record()> routine.

 =head4 get_ioint_info

-  get_ioint_info(int cmd,struct dbCommon *precord,IOSCANPVT *ppvt)
+  long get_ioint_info(int cmd, dbCommon *precord, IOSCANPVT *ppvt)

 This routine is called by the ioEventScan system each time the record is added
 or deleted from an I/O event scan list.  cmd has the value (0,1) if the
@@ -339,7 +343,7 @@ provided for any device type that can use the ioEvent scanner.

 =head4 read_wf

-  read_wf(precord)
+  long read_wf(waveformRecord *prec)

 This routine must provide a new input value. It returns the following values:

@@ -361,38 +365,11 @@ The C<<< Soft Channel >>> device support module is provided to read values from
 other records and store them in arrays. If INP is a constant link, then read_wf
 does nothing. In this case, the record can be used to hold arrays written via
 dbPuts. If INP is a database or channel access link, the new array value is read
-from the link. NORD is set.
+from the link. NORD is set to the number of items in the array.

 This module places a value directly in VAL.

-If the INP link type is constant, then NORD is set to zero. If the INP link type
-is PV_LINK, then dbCaAddInlink is called by C<init_record()>.
-
-read_wf calls recGblGetLinkValue which performs the following steps:
-
-=over
-
-=item *
-
-If the INP link type is CONSTANT recGblGetLinkValue does nothing.
-
-=item *
-
-If the INP link type is DB_LINK, then dbGetLink is called to obtain a new input
-value. If dbGetLink returns an error, a LINK_ALARM with a severity of
-INVALID_ALARM is raised.
-
-=item *
-
-If the INP link type is CA_LINK, then dbCaGetLink is called to obtain a new
-input value. If dbCaGetLink returns an error, a LINK_ALARM with a severity of
-INVALID_ALARM is raised.
-
-=item *
-
-NORD is set to the number of values returned and read_wf returns.
-
-=back
+If the INP link type is constant, then NORD is set to zero.

 =cut

--- a/src/tools/EPICS/PodHtml.pm
+++ b/src/tools/EPICS/PodHtml.pm
@@ -0,0 +1,62 @@
+package EPICS::PodHtml;
+
+use strict;
+use warnings;
+
+use base 'Pod::Simple::HTML';
+
+sub encode_entities {
+    my ($self, $str) = @_;
+    my %entities = (
+        q{>} => 'gt',
+        q{<} => 'lt',
+        q{'} => '#39',
+        q{"} => 'quot',
+        q{&} => 'amp'
+    );
+    my $ents = join '', keys %entities;
+    $str =~ s/([$ents])/'&' . $entities{$1} . ';'/ge;
+    return $str;
+}
+
+# Translate L<link text|filename/Section name>
+# into <a href="filename.html#Section-name">link text</a>
+
+sub do_pod_link {
+    # EPICS::PodHtml object and Pod::Simple::PullParserStartToken object
+    my ($self, $link) = @_;
+
+    my $ret;
+
+    # Links to other EPICS POD files
+    if ($link->tagname eq 'L' and $link->attr('type') eq 'pod') {
+        my $to = $link->attr('to');
+        my $section = $link->attr('section');
+        $section = $self->section_escape($section)
+            if defined $section and length($section .= ''); # (stringify)
+
+        $ret = (defined $to and length $to) ? "$to.html" : '';
+        $ret .= "#$section" if defined $section and length $section;
+    }
+    else {
+        # all other links are generated by the parent class
+        $ret = $self->SUPER::do_pod_link($link);
+    }
+
+    return $ret;
+}
+
+# Generate the same section IDs as Pod::Simple::XHTML
+
+sub section_name_tidy {
+    my($self, $section) = @_;
+    $section =~ s/^\s+//;
+    $section =~ s/\s+$//;
+    $section =~ tr/ /-/;
+    $section =~ s/[[:cntrl:][:^ascii:]]//g; # drop crazy characters
+    $section = $self->unicode_escape_url($section);
+    $section = '_' unless length $section;
+    return $section;
+}
+
+1;
--- a/src/tools/EPICS/PodXHtml.pm
+++ b/src/tools/EPICS/PodXHtml.pm
@@ -0,0 +1,40 @@
+package EPICS::PodXHtml;
+
+use strict;
+use warnings;
+
+use base 'Pod::Simple::XHTML';
+
+BEGIN {
+    if ($Pod::Simple::XHTML::VERSION < '3.16') {
+        # encode_entities() wasn't a method, add it
+        our *encode_entities = sub {
+            my ($self, $str) = @_;
+            my %entities = (
+                q{>} => 'gt',
+                q{<} => 'lt',
+                q{'} => '#39',
+                q{"} => 'quot',
+                q{&} => 'amp'
+            );
+            my $ents = join '', keys %entities;
+            $str =~ s/([$ents])/'&' . $entities{$1} . ';'/ge;
+            return $str;
+        }
+    }
+}
+
+# Translate L<link text|filename/Section name>
+# into <a href="filename.html#Section-name">link text</a>
+
+sub resolve_pod_page_link {
+    my ($self, $to, $section) = @_;
+
+    my $ret = defined $to ? "$to.html" : '';
+    $ret .= '#' . $self->idify($self->encode_entities($section), 1)
+        if defined $section;
+
+    return $ret;
+}
+
+1;
--- a/src/tools/Makefile
+++ b/src/tools/Makefile
@@ -2,7 +2,7 @@
 # Copyright (c) 2012 UChicago Argonne LLC, as Operator of Argonne
 #     National Laboratory.
 # EPICS BASE is distributed subject to a Software License Agreement found
-# in file LICENSE that is included with this distribution. 
+# in file LICENSE that is included with this distribution.
 #*************************************************************************
 TOP=../..

@@ -17,6 +17,8 @@ PERL_MODULES += EPICS/Release.pm
 PERL_MODULES += EPICS/Readfile.pm
 PERL_MODULES += EPICS/Getopts.pm
 PERL_MODULES += EPICS/macLib.pm
+PERL_MODULES += EPICS/PodHtml.pm
+PERL_MODULES += EPICS/PodXHtml.pm

 PERL_MODULES += DBD.pm
 PERL_MODULES += DBD/Base.pm
@@ -50,6 +52,7 @@ PERL_SCRIPTS += mkmf.pl
 PERL_SCRIPTS += munch.pl
 PERL_SCRIPTS += replaceVAR.pl
 PERL_SCRIPTS += tap-to-junit-xml.pl
+PERL_SCRIPTS += testFailures.pl
 PERL_SCRIPTS += useManifestTool.pl

 PERL_SCRIPTS += dbdToMenuH.pl
@@ -82,8 +85,7 @@ EXPAND += $(PKGCONFIG:%=%@)
 CLEANS += epics-base-$(T_A).pc@

 include $(TOP)/configure/RULES
- 
+
 epics-base-$(T_A).pc@: ../epics-base-arch.pc@
 	@$(RM) $@
 	@$(CP) $< $@
-
--- a/src/tools/convertRelease.pl
+++ b/src/tools/convertRelease.pl
@@ -242,24 +242,26 @@ sub checkRelease {
    my $latest = AbsPath($macros{$app});
    my %paths = ($latest => $app);
    foreach $app (@modules) {
-        my $path = AbsPath($macros{$app});
+        my $val = $macros{$app};
+        next if $val eq '';
+        my $path = AbsPath($val);
        if ($path ne $latest && exists $paths{$path}) {
            my $prev = $paths{$path};
            print "\n" unless ($status);
            print "This application's RELEASE file(s) define\n";
-            print "\t$app = $macros{$app}\n";
-            print "after but not adjacent to\n\t$prev = $macros{$prev}\n";
+            print "\t$app = $val\n";
+            print "and\n\t$prev = $macros{$prev}\n";
            print "both of which resolve to $path\n"
-                if $path ne $macros{$app} || $path ne $macros{$prev};
+                if $path ne $val || $path ne $macros{$prev};
            $status = 2;
        }
        $paths{$path} = $app;
        $latest = $path;
    }
    if ($status == 2) {
-        print "Module definitions that share paths must be grouped together.\n";
-        print "Either remove a definition, or move it to a line immediately\n";
-        print "above or below the other(s).\n";
+        print "Module definitions that share the same path must have their\n";
+        print "first definitions grouped together. Either remove a module,\n";
+        print "or arrange them so all those with that path are adjacent.\n";
        print "Any non-module definitions belong in configure/CONFIG_SITE.\n";
        $status = 1;
    }
--- a/src/tools/dbdToHtml.pl
+++ b/src/tools/dbdToHtml.pl
@@ -18,26 +18,9 @@ use EPICS::macLib;
 use EPICS::Readfile;

 BEGIN {
-    $::XHTML = eval "require Pod::Simple::XHTML; 1";
-    $::ENTITIES = eval "require HTML::Entities; 1";
+    $::XHTML = eval "require EPICS::PodXHtml; 1";
    if (!$::XHTML) {
-        require Pod::Simple::HTML;
-    }
-    if (!$::ENTITIES) {
-        my %entities = (
-            q{>} => 'gt',
-            q{<} => 'lt',
-            q{'} => '#39',
-            q{"} => 'quot',
-            q{&} => 'amp',
-        );
-
-        sub encode_entities {
-            my $str = shift;
-            my $ents = join '', keys %entities;
-            $str =~ s/([ $ents ])/'&' . ($entities{$1} || sprintf '#x%X', ord $1) . ';'/xge;
-            return $str;
-        }
+        require EPICS::PodHtml;
    }
 }

@@ -130,7 +113,7 @@ my $contentType =
    '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" >';

 if ($::XHTML) {
-    $podHtml = Pod::Simple::XHTML->new();
+    $podHtml = EPICS::PodXHtml->new();
    $podHtml->html_doctype(<< '__END_DOCTYPE');
 <?xml version='1.0' encoding='UTF-8'?>
 <!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Transitional//EN'
@@ -152,7 +135,7 @@ __END_DOCTYPE
    }
 } else { # Fall back to HTML
    $Pod::Simple::HTML::Content_decl = $contentType;
-    $podHtml = Pod::Simple::HTML->new();
+    $podHtml = EPICS::PodHtml->new();
    $podHtml->html_css('style.css');

    $idify = sub {
@@ -190,7 +173,7 @@ my $pod = join "\n", '=for html <div class="pod">', '',
    } $dbd->pod,
    '=for html </div>', '';

-$podHtml->force_title(encode_entities($title));
+$podHtml->force_title($podHtml->encode_entities($title));
 $podHtml->perldoc_url_prefix('');
 $podHtml->perldoc_url_postfix('.html');
 $podHtml->output_fh($out);
--- a/src/tools/podToHtml.pl
+++ b/src/tools/podToHtml.pl
@@ -9,8 +9,15 @@
 use strict;
 use warnings;

+# To find the EPICS::PodHtml module used below we need to add our lib/perl to
+# the lib search path. If the script is running from the src/tools directory
+# before everything has been installed though, the search path must include
+# our source directory (i.e. $Bin), so we add both here.
+use FindBin qw($Bin);
+use lib ("$Bin/../../lib/perl", $Bin);
+
 use Getopt::Std;
-use Pod::Simple::HTML;
+use EPICS::PodHtml;

 our ($opt_o);

@@ -27,11 +34,9 @@ if (!$opt_o) {
 open my $out, '>', $opt_o or
    die "Can't create $opt_o: $!\n";

-my $podHtml = Pod::Simple::HTML->new();
+my $podHtml = EPICS::PodHtml->new();

 $podHtml->html_css('style.css');
-$podHtml->perldoc_url_prefix('');
-$podHtml->perldoc_url_postfix('.html');
 $podHtml->set_source($infile);
 $podHtml->output_string(\my $html);
 $podHtml->run;
--- a/src/tools/testFailures.pl
+++ b/src/tools/testFailures.pl
@@ -0,0 +1,33 @@
+#!/usr/bin/env perl
+#*************************************************************************
+# EPICS BASE is distributed subject to a Software License Agreement found
+# in the file LICENSE that is included with this distribution.
+#*************************************************************************
+
+# This file may appear trivial, but it exists to let the build system
+# fail the 'make test-results' target with a nice output including a
+# summary of the directories where test failures were reported.
+# Test results are collected from the .tap files fed to epicsProve.pl
+# which returns with an exit status of 0 (success) if all tests passed
+# or 1 (failure) if any of the .tap files contained failed tests.
+# When epicsProve.pl indicates a failure, the directory that it was
+# running in is appended to the file $(TOP)/.tests-failed which this
+# program reads in after all the test directories have been visited.
+# The exit status of this program is 1 (failure) if any tests failed,
+# otherwise 0 (success).
+
+use strict;
+use warnings;
+
+die "Usage: testFailures.pl .tests-failed\n"
+    unless @ARGV == 1;
+
+open FAILURES, '<', shift or
+    exit 0;
+my @failures = <FAILURES>;
+close FAILURES;
+
+print "\nTest failures were reported in:\n",
+    (map {"    $_"} @failures), "\n";
+
+exit 1;
Author	SHA1	Message	Date
Andrew Johnson	c7e42fab3c	Set version number to 3.15.8, clear snapshot	2020-05-15 12:00:23 -05:00
Andrew Johnson	2f28ce94f4	Release Notes changes for 3.15.8	2020-05-15 11:36:45 -05:00
Andrew Johnson	732f8b19be	Merge branch 'defaultMessageQueue' into 3.15	2020-05-14 10:41:52 -05:00
Andrew Johnson	b03e2f376b	eMQTest: Start each test with a new (empty) queue If fastReceiver() took more than 0.01 seconds to exit, sleepySender() might have pushed a second message onto the queue after setting recvExit, so there would be an extra message in the queue for the next test, which I was seeing on Appveyor. That's my current theory...	2020-05-13 16:11:31 -05:00
Andrew Johnson	59c68807b6	Heinz Junkes' fix for lp: #1812084 Build failure on RTEMS I reduced some of the code duplication from his original.	2020-05-13 15:26:34 -05:00
Andrew Johnson	2e7ed02a60	Allow/expect MinGW to fail epicsStackTraceTest #5	2020-05-07 13:13:26 -05:00
Andrew Johnson	089954aaab	MessageQueue Tests: Extend Mark's sleep tests	2020-05-07 13:12:12 -05:00
Andrew Johnson	34e0b2f305	osdMessageQueue: Undo change to -ve timeout handling The internal mySend() and myReceive() routines do expect a timeout of -1 to mean wait forever, see the epicsMessageQueueSend() and epicsMessageQueueReceive() API routines.	2020-05-04 11:56:14 -05:00
Andrew Johnson	ceb13797a6	Cosmetic	2020-05-01 00:13:02 -05:00
Andrew Johnson	084557bd3e	osdMessageQueue: Don't wake our sender until we're ready for it Move the code that wakes up the next sending task to after we've added our threadNode to the receiveQueue. He still has to wait for us to release the Mutex though, so this might make no difference. This commit also changes when we decrement the number of waiting senders so it always happens immediately after a threadNode gets taken off the sendQueue by the code that removed it.	2020-05-01 00:12:32 -05:00
Andrew Johnson	aeed7cfbdd	osdMessageQueue: This is the mirror of Heinz Junkes' earlier fix When sending a message, if the queue is full so we have to wait, we create a threadNode with an eventNode in it and stick it on the sendQueue, then wait for a receiver to signal that event, waking us. If we awoke due to a timeout but a receiver was actually waking us up anyway (i.e. eventSent was set), we shouldn't give up.	2020-04-30 23:55:30 -05:00
Andrew Johnson	183c3b2a3e	osdMessageQueue: Clear eventNode before returning it Introduced freeEventNode() which ensures eventNodes don't have a signalled event in them before returning the node to the freeList. Callers pass the status from epicsEventWaitWithTimeout() to indicate whether it was signalled or not. If it timed out we must trigger it and Wait to clear the event state.	2020-04-30 23:38:51 -05:00
Andrew Johnson	cf2fef2405	osdMessageQueue: Return sooner on -ve timeout It appears that previously a negative timeout actually implemented a 'wait forever', but the VxWorks and RTEMS implementations both check for (timeout <= 0) and return immediately if nothing can be done without waiting.	2020-04-30 23:27:43 -05:00
Andrew Johnson	298c8706ec	osdMessageQueue: Rename freeEventNode() -> destroyEventNode()	2020-04-30 22:59:58 -05:00
Ralph Lange	49de2ec498	Merge ralph@gh:use-ci-scripts-3.15 into 3.15	2020-04-27 12:10:24 +02:00
Ralph Lange	0aa6e9603b	Update .ci submodule to v2.3.3 - fix appveyor issue when building base - fix RTEMS cross build for Base 3.15 - run tests using parallel make	2020-04-27 11:59:57 +02:00
Andrew Johnson	314e09d8ca	Build system release notes	2020-04-24 16:44:49 -05:00
Ralph Lange	076175386f	ci: remove old integration in .ci-local	2020-04-24 19:27:05 +02:00
Ralph Lange	f40d379485	appveyor: update .appveyor.yml for ci-scripts	2020-04-24 19:27:05 +02:00
Ralph Lange	445cbb8221	travis-ci: update .travis.yml for ci-scripts - use more EXTRAs on MacOS for make args	2020-04-24 19:27:05 +02:00
Ralph Lange	a9c8d8d5d3	Add ci-scripts v2.3.2 (submodule in .ci)	2020-04-24 15:11:32 +02:00
Ralph Lange	1ff64f72a9	ci: move ci -> .ci-local also rename appveyor.yml -> .appveyor.yml	2020-04-23 16:00:53 +02:00
Ralph Lange	f10d0d95b0	Apply perl rules for .tap and .xml only to perl tests Don't apply the %.tap: %.t and %.xml: %.tap rules to tap and junit result files from other test frameworks. (They would overwrite the other frameworks' own rules.)	2020-04-21 11:45:50 +02:00
Andrew Johnson	dfbda1394d	Revert the runtests:: change but in an extensible way Use only %.t files in new TESTSCRIPTS.t var for Perl tests. TAPFILES and JUNITFILES can be appended to by other rules. The runtests and test-results rules have no direct recipes. Added run-tap-tests and tap-results rules, simlified recipe. Make %.tap:%.t and %.xml:%.tap into static pattern rules.	2020-04-21 01:39:59 -05:00
Andrew Johnson	d05d8807ec	Stop generating the testspec file It was created before modern continuous integration systems came along; Diamond were supposed to run the tests for us, but they didn't last for very long.	2020-04-21 01:17:48 -05:00
Andrew Johnson	582a9dbef5	Replace pre-make rule with before-actions rules For all standard build ACTIONS, a rule before-<action> is run just before running that action in the subdirectories given by the DIRS variable. Only works in Makefiles that include RULES_DIRS or RULES_TOP.	2020-04-21 01:14:03 -05:00
Andrew Johnson	b655662131	Appveyor: Move 'make test-results' to the on_finish stage	2020-04-20 11:33:37 -05:00
Andrew Johnson	be061e1084	Tidy up testFailures script slighlty	2020-04-20 11:31:45 -05:00
Andrew Johnson	91c18c32d4	Have Appveyor make 'tapfiles test-results' instead of 'runtests'	2020-04-18 00:36:35 -05:00
Andrew Johnson	3790ce4452	Have 'make test-results' fail nicely if any tests did Lists the directories with failed tests at the end of the build. It is no longer necessary to use 'make -k' to see the results of all tests after one or more failures as only the top-level test-results recipe will generate a build error.	2020-04-18 00:18:11 -05:00
Andrew Johnson	566ab038d2	Make test-results not fail so it shows all results For some reason 'make -k test-results' isn't always doing the -k (continue-on-error) on Windows.	2020-04-17 16:51:48 -05:00
Andrew Johnson	648589e6ab	podToHtml: Add bootstrap search path for EPICS::PodHtml	2020-04-17 16:42:18 -05:00
Andrew Johnson	841effe9ee	epicsMessageQueueTest: Shorten the 1R4S tests	2020-04-16 17:14:58 -05:00
Andrew Johnson	a9727fd5cb	Ben Franksen's fix for lp: #1868486	2020-04-16 17:12:25 -05:00
Andrew Johnson	fde0485d6b	Added Mark Rivers' tests for the message queue timeout bug	2020-04-16 17:10:53 -05:00
Ralph Lange	cbf917e833	Improve automated testing rules to allow other test frameworks - make runtests a double-colon rule, so that other test frameworks can add their own recipes independently - only define runtests:: $TESTSCRIPTS rule when there are TESTSCRIPTS (to avoid having it run every time when no TESTSCRIPTS are defined) - $(strip $TAPFILES) inside ifneq to fix trouble when TAPFILES=' '	2020-04-16 12:04:16 +02:00
Andrew Johnson	45cf2ea5ce	Modify the POD to HTML conversion code to work on older Perls	2020-04-14 16:41:20 -05:00
Andrew Johnson	a95635a018	Merge Freddie's bit_operations branch into 3.15	2020-04-14 15:28:22 -05:00
Andrew Johnson	9df39475cd	Merge Martin Konrad's fix-log-issues branch into 3.15	2020-04-14 11:41:23 -05:00
Andrew Johnson	bdf01e7a67	Merge Martin Konrad's Appveyor-worker-image branch into 3.15	2020-04-14 11:28:53 -05:00
Andrew Johnson	0dd5f863ef	Add some release notes	2020-04-13 17:57:33 -05:00
Andrew Johnson	38339b6ccf	Initialize main thread as OkToBlock	2020-04-13 17:56:09 -05:00
Martin Konrad	2aecf3142a	Explicitly specify worker image	2020-04-13 16:45:21 -04:00
Ralph Lange	1687757752	catools: make camonitor handle type changes taken from a patch provided by Dirk Zimoch (in 2014)	2020-04-06 10:58:40 +02:00
Andrew Johnson	1533a4f13f	Updates to record POD documentation.	2020-04-03 00:33:51 -05:00
Andrew Johnson	a1aeb23314	Modify POD to HTML tools to better support links Introduce derived classes to process links the way we need them. Unify the generation of an ID from a section heading.	2020-04-03 00:29:22 -05:00
Andrew Johnson	933e276e1a	Rolf Keitel's POD documentation for dbCommon (from the Wiki) I split his two "Fields Common to ..." sections back into separate docs, added links between them all, and made the appropriate build changes. Also added these and the aai/aao records to the documentation index.	2020-04-02 15:47:10 -05:00
Freddie Akeroyd	7f02f8a386	Exclude VS2012 from -FS option (cherry picked from 7.0 / commit `4aee25e8` and `e29a53f0`)	2020-03-28 15:55:35 +01:00
Rold Keitel	cb3fb18f40	POD docs: add aai & aai, update others	2020-03-26 17:41:12 -05:00
Rold Keitel	062c75a078	Prepare for POD documentation of the aa[io]Records	2020-03-26 16:35:58 -05:00
Andrew Johnson	b2160bd618	Merge Martin Konrad's replace-usleep branch into 3.15	2020-03-20 13:40:35 -05:00
Andrew Johnson	5b7f896312	Merge Dirk's emptyArrayCrashFix branch into 3.15	2020-03-20 13:28:34 -05:00
Andrew Johnson	a9034bb586	Fix clock_gettime issue on newer MinGW builds Fixes lp: #1853168	2020-03-07 00:40:13 -06:00
Martin Konrad	f9820577c1	Replace usleep call by nanosleep Also improve behavior in case signals are delivered to the sleeping thread. This fixes a potential security weakness reported by codacy (interaction of usleep with SIGALRM and other timer functions such as sleep(), alarm(), setitimer(), and nanosleep() is unspecified).	2020-03-04 11:19:02 -05:00
Michael Davidsaver	e6914f3b80	osdSockUnsentCount.c check for existance of SIO_TCP_INFO	2020-02-20 15:37:18 -05:00
Andrew Johnson	41f1b0ffb5	Fix histogram record allocation bug Found by Peter Heesterman: Potential use of NULL pcallback pointer. Nothing looks at the return value from wdogInit(), so don't bother.	2020-02-19 15:09:13 -06:00
Andrew Johnson	d82d3d3679	Combine the iocVirgin and iocStopped states into iocVoid	2020-02-18 18:05:46 -06:00
Dirk Zimoch	e48cdb48ac	dbGet should not crash when source is an empty array	2020-02-18 17:45:12 +01:00
Freddie Akeroyd	3944b32e04	Add back in optimisation disable	2020-02-17 13:30:15 +00:00
Freddie Akeroyd	a0667a122b	Excluded x64 tests now need to be excluded on x86 too	2020-02-17 13:29:38 +00:00
Freddie Akeroyd	f2b4c412d3	Fix doc typo	2020-02-17 12:49:45 +00:00
Freddie Akeroyd	8250339e0d	Update record pod documentation	2020-02-17 12:46:11 +00:00
Freddie Akeroyd	803593560d	Remove redundant left logical shift	2020-02-17 12:22:20 +00:00
Freddie Akeroyd	bfae080af4	Merge branch '3.15' of git+ssh://git.launchpad.net/epics-base into bit_operations	2020-02-17 11:45:25 +00:00
Michael Davidsaver	6ae3f56560	Merge remote-tracking branch 'lp-konrad/fix-crash-dbloadrecords-after-iocinit' into 3.15 * lp-konrad/fix-crash-dbloadrecords-after-iocinit: Fix mingw cross-build Use accessor in iocInit Fix segfault when calling dbLoadRecords after iocInit	2020-02-14 17:18:01 +00:00
Bryan Robert Tester	4844fbbd82	moved listen into rsrv_grab_tcp to allow retry if failed Fixes race condition with multiple IOCs starting simultaneously.	2020-02-14 17:10:04 +00:00
Gabriel Fedel	983937a52f	Fix event record device support with constant INP This fix apply to event record device with constant INP. Now when the event record is proccessed the associated records with the same SCAN setup get triggered correctly, it is not more necessary to set VAL on event record. Fixes lp: #1829770	2020-02-14 17:08:36 +00:00
Freddie Akeroyd	6867f97346	Fix bit operations failures on VS2019 32bit Working with Dirk Zimoch @dirk.zimoch, fixed various issues with bit operations on VS2019 32bit. These seem to relate to handling bit 31 of a 32 bit number. As EPICS << is an arithmetic bit shift, following Java we have added <<< and >>> operators for logical shifts Though it is on a different architecture, this looks like a similar issue to LP: #1838792	2020-02-14 01:16:09 +00:00
Andrew Johnson	1d9e9ff4f7	Add new POD output files to RecordReference index	2020-02-13 09:06:48 -06:00
Andrew Johnson	eb8ca22704	Add new POD documentation, from Rolf Keitel Documents the lsi, lso and printf record types.	2020-02-13 09:06:14 -06:00
Andrew Johnson	bfd289e85f	Add converted histogram POD	2020-02-13 05:11:36 -06:00
Andrew Johnson	a5bae49dab	Rename lsi, lso and printf *Record.dbd to .dbd.pod	2020-02-13 04:58:06 -06:00
Andrew Johnson	7a612f9524	Update to stringout POD from Rolf Keitel Fix spelling of OMSL. Document the stdio device support.	2020-02-12 09:25:54 -06:00
Andrew Johnson	0db8f8ca1b	Rename histogramRecord.dbd to .dbd.pod	2020-02-12 07:45:04 -06:00
Andrew Johnson	dbd6f7e807	Adding tests for epicsThreadClass API Two tests are disabled which hang the parent in the epicsThread destuctor	2020-01-23 14:26:33 -06:00
Andrew Johnson	54cd7e7ba1	MinGW: Replace -Wno-format with -D__USE_MINGW_ANSI_STDIO	2020-01-08 17:21:04 -06:00
Andrew Johnson	cbe6173417	Updates to the subArrayRecord reference page	2020-01-08 17:19:25 -06:00
Michael Davidsaver	f64f84744e	more fun with isinf() and friends. GNU libstdc++ prior to GCC 6.1.0, the overlay math.h always includes math.h from glibc, which defines isinf() and friends. GCC 6.1.0 includes a change (6c8ced3f4f867b72a623fe2f23efa204c5786a28) so that the overlay math.h never includes the glibc math.h when compiling c++. The overlay math.h sometimes includes "using std::isinf" Determined by inspecting libc math.h when building gcc.	2019-12-18 20:30:23 -08:00
Michael Davidsaver	d97a12f095	travis-ci test trusty w/ c++11	2019-12-18 20:30:23 -08:00
Andrew Johnson	475963453c	Merge Martin Konrad's retire-epicsexcept branch into 3.15	2019-12-17 23:48:45 -06:00
Andrew Johnson	f5a442c0de	Merge Martin Konrad's fix-typos branch	2019-12-17 23:46:07 -06:00
Martin Konrad	df519ce1a2	Fix typos in calcoutRecord.dbd.pod	2019-12-17 15:53:41 -05:00
Michael Davidsaver	feb938fae2	minor epicsTimerTest (cherry picked from commit `7acd7c6145`)	2019-12-16 13:16:31 -08:00
Michael Davidsaver	e068191684	epicsTimerTest loosen test threshold (cherry picked from commit `f955199805`)	2019-12-16 13:16:30 -08:00
Michael Davidsaver	33f2d8c4aa	debug epicsTimerTest (cherry picked from commit `2af0c10470`)	2019-12-16 13:16:29 -08:00
Michael Davidsaver	60a092fa50	posix/epicsMath.h Include "<cmath>" for c++11 and pull in non-namespace versions of isnan() and friends.	2019-12-16 11:40:13 -08:00
Michael Davidsaver	24f08460bb	Revert "libcom: fix colliding isnan/isinf between C99 and C++0x for gcc-4" This reverts commit `09ec3af337`.	2019-12-16 11:40:13 -08:00
Michael Davidsaver	247fea0fa9	Revert "libcom: properly declare isnan() in C++ code" This reverts commit `2e89a60c2d`.	2019-12-16 11:40:13 -08:00
Michael Davidsaver	8a9637568e	travis-ci /etc/hosts workaround	2019-12-16 11:40:13 -08:00
Michael Davidsaver	87229fdef0	redo travis-ci with matrix add mix of Ubuntu versions	2019-12-16 11:40:13 -08:00
Michael Davidsaver	b0418e5274	epicsSockResolveTest add detail	2019-12-16 11:40:13 -08:00
Ralph Lange	2e89a60c2d	libcom: properly declare isnan() in C++ code	2019-12-11 14:51:16 +01:00
Ralph Lange	09ec3af337	libcom: fix colliding isnan/isinf between C99 and C++0x for gcc-4 This fix can be removed once support for gcc-4 is dropped in 2038	2019-12-06 10:52:38 +01:00
Ralph Lange	70e9d46d75	libcom: import some C99 math (isnan etc.) into global namespace	2019-12-05 16:44:59 +01:00
Andrew Johnson	1d18aa3e6c	Disable printf() format warnings on MinGW, they're broken	2019-11-21 12:20:56 -06:00
Andrew Johnson	a85967caea	Cross-builds of 64-bit MinGW should inherit from 32-bit Don't duplicate, this file missed an important change as a result.	2019-11-21 12:20:13 -06:00
Martin Konrad	a50b850ebd	Fix mingw cross-build	2019-11-15 09:33:15 -05:00
Martin Konrad	6767bcd31e	Use accessor in iocInit This is simpler than using init hooks.	2019-11-14 13:57:45 -05:00
Martin Konrad	81550ac4d3	Fix segfault when calling dbLoadRecords after iocInit This fixes lp:1829919.	2019-11-14 10:11:16 -05:00
Dirk Zimoch	d2d8674cb9	use EPICS_PRIVATE_API macro and fix bug with darwin/ios	2019-11-13 14:02:25 -05:00
Dirk Zimoch	6f193242e0	renamed epicsSocketCountUnsentBytes to epicsSocketUnsentCount and moved it to osi/os/	2019-11-13 14:02:23 -05:00
Dirk Zimoch	39e8ccdef4	fix bug from commit f85454. Apparently epicsExportSharedSymbols is needed even though epicsExport.h is included	2019-11-13 13:49:28 -05:00
Dirk Zimoch	eb8992a750	epicsSocketCountUnsentBytes returns -1 on failure	2019-11-13 13:49:27 -05:00
Dirk Zimoch	62fb49f93b	bugfix: memmove'ed to much	2019-11-13 13:49:27 -05:00
Dirk Zimoch	a5c9db8c8e	epicsSockCountUnsentBytes renamed to epicsSocketCountUnsentBytes	2019-11-13 13:49:26 -05:00
Dirk Zimoch	04e752c83a	moved logClientSendMessage and made it static	2019-11-13 13:49:26 -05:00
Dirk Zimoch	a16ce877e7	fix wrong function name in comment	2019-11-13 13:49:26 -05:00
Dirk Zimoch	15f28f1183	sending 0 bytes helps to detect broken connections on some systems (but is undefined behavior on Linux, fails on vxWorks and is a documented no-op on Windows)	2019-11-13 13:49:25 -05:00
Dirk Zimoch	9c18ce007a	cannot print sockets with %d in Windows, they are not small ints but maybe pointers.	2019-11-13 13:49:25 -05:00
Dirk Zimoch	765af2efea	ask logClient socket how many bytes are still in the send queue and don't discard them in case the connection turns out broken.	2019-11-13 13:49:24 -05:00
Dirk Zimoch	059c385286	use dynamic debug flag for logClient	2019-11-13 13:49:24 -05:00
Dirk Zimoch	feb1f9b0df	increase error message buffer size for long (Windows) error messges	2019-11-13 13:49:23 -05:00
Dirk Zimoch	9d9840ad1e	improve logClientShow to show unsent bytes on level 2 (and fix level 1)	2019-11-13 13:49:23 -05:00
Dirk Zimoch	af73e4cf65	removed unneeded include	2019-11-13 13:49:23 -05:00
Dirk Zimoch	ad861a0617	no need to delay startup only because log server is currently not available	2019-11-13 13:49:22 -05:00
Dirk Zimoch	1b88e834d6	send pending log messages directly after connecting	2019-11-13 13:49:22 -05:00
Dirk Zimoch	e000ea4913	avoid needless memmove calls	2019-11-13 13:49:21 -05:00
Dirk Zimoch	06f1a8ec23	elimitate duplicate code in logClient	2019-11-13 13:49:21 -05:00
Dirk Zimoch	cf2658be53	do not discard unsent messages when log server has closed connection, instead try to send them after reconnect	2019-11-13 13:49:20 -05:00
Dirk Zimoch	74a403090b	speed up logRestart thread termination at exit	2019-11-13 13:49:20 -05:00
Dirk Zimoch	dc123a0a37	don't send errlog on all logClients	2019-11-13 13:49:20 -05:00
Andrew Johnson	7eee262486	Shorten/simplify uninstall recipes	2019-11-12 16:16:02 -06:00
Andrew Johnson	a10379327c	Replace broken cleandirs recipe	2019-11-12 16:14:39 -06:00
Martin Konrad	b37bfe3ed0	Retire unused epicsExcept.h Due to a syntax error this header has been unusable since 2001 (since `34ea7db15b`), and no one noticed. Let's remove it.	2019-11-12 12:12:47 -05:00
Andrew Johnson	41d86ecd7a	Add a document containing Record Reference links	2019-11-11 11:30:46 -06:00
Andrew Johnson	961dd2bc5d	Don't check empty (overridden) RELEASE definitions Bug reported by Dirk Zimoch	2019-11-11 11:29:03 -06:00
Andrew Johnson	db4ad455d2	Update version numbers for 3.15.8-DEV (3.15.7.1-DEV)	2019-10-31 15:23:11 -05:00