Final commit for 4.7.2

Changed Field Fix

.appveyor.yml

@@ -0,0 +1,93 @@
+# .appveyor.yml for use with EPICS Base ci-scripts
+# (see: https://github.com/epics-base/ci-scripts)
+
+# This is YAML - indentation levels are crucial
+
+cache:
+  - C:\Users\appveyor\.tools
+
+#---------------------------------#
+#       repository cloning        #
+#---------------------------------#
+
+init:
+  # Set autocrlf to make batch files work
+  - git config --global core.autocrlf true
+
+clone_depth: 5
+
+# Build Configurations: dll/static, regular/debug
+configuration:
+  - dynamic
+  - static
+  - dynamic-debug
+  - static-debug
+
+# Default OS Image
+image: Visual Studio 2019
+
+# Environment variables: compiler toolchain, base version, setup file, ...
+environment:
+  # common / default variables for all jobs
+  SETUP_PATH: .ci-local:.ci
+
+  matrix:
+  - BASE: 3.15
+    CMP: vs2019
+  - BASE: 7.0
+    CMP: vs2019
+  - BASE: 7.0
+    CMP: gcc
+  - BASE: 7.0
+    CMP: vs2017
+    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+
+# Platform: processor architecture
+platform:
+  - x64
+
+#---------------------------------#
+#     building & testing          #
+#---------------------------------#
+
+install:
+  - cmd: git submodule update --init --recursive
+  - cmd: pip install git+https://github.com/mdavidsaver/ci-core-dumper#egg=ci-core-dumper
+  - cmd: python .ci/cue.py prepare
+
+build_script:
+  - cmd: python .ci/cue.py build
+
+test_script:
+  - cmd: python -m ci_core_dumper install
+  - cmd: python .ci/cue.py -T 20M test
+
+on_finish:
+  - ps: Get-ChildItem *.tap -Recurse -Force | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
+  - cmd: python .ci/cue.py -T 5M test-results
+
+on_failure:
+  - cmd: python -m ci_core_dumper report
+
+#---------------------------------#
+#         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
+
+#on_failure:
+#  - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+#  - 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

.ci-local/defaults.set

@@ -0,0 +1,14 @@
+# EPICS Base
+BASE_DIRNAME=base
+BASE_REPONAME=epics-base
+BASE_REPOOWNER=epics-base
+BASE_VARNAME=EPICS_BASE
+BASE_RECURSIVE=NO
+
+MODULES=PVDATA PVACCESS
+
+PVDATA_REPONAME=pvDataCPP
+PVDATA_REPOOWNER=epics-base
+
+PVACCESS_REPONAME=pvAccessCPP
+PVACCESS_REPOOWNER=epics-base

.ci/travis-build.sh

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

.ci/travis-prepare.sh

@@ -1,109 +0,0 @@
-#!/bin/sh
-set -e -x
-
-CURDIR="$PWD"
-
-cat << EOF > $CURDIR/configure/RELEASE.local
-EPICS_BASE=$HOME/.source/epics-base
-EOF
-
-install -d "$HOME/.source"
-cd "$HOME/.source"
-
-add_gh_flat() {
-  MODULE=$1
-  REPOOWNER=$2
-  REPONAME=$3
-  BRANCH=$4
-  MODULE_UC=$(echo $MODULE | tr 'a-z' 'A-Z')
-  ( git clone --quiet --depth 5 --branch $BRANCH https://github.com/$REPOOWNER/$REPONAME.git $MODULE && \
-  cd $MODULE && git log -n1 )
-  cat < $CURDIR/configure/RELEASE.local > $MODULE/configure/RELEASE.local
-  cat << EOF >> $CURDIR/configure/RELEASE.local
-${MODULE_UC}=$HOME/.source/$MODULE
-EOF
-}
-
-# not recursive
-git clone --quiet --depth 5 --branch "$BRBASE" https://github.com/${REPOBASE:-epics-base}/epics-base.git epics-base
-(cd epics-base && git log -n1 )
-add_gh_flat pvData ${REPOPVD:-epics-base} pvDataCPP ${BRPVD:-master}
-add_gh_flat pvAccess ${REPOPVA:-epics-base} pvAccessCPP ${BRPVA:-master}
-
-if [ -e $CURDIR/configure/RELEASE.local ]
-then
-  cat $CURDIR/configure/RELEASE.local
-fi
-
-EPICS_HOST_ARCH=`sh epics-base/startup/EpicsHostArch`
-
-# requires wine and g++-mingw-w64-i686
-if [ "$WINE" = "32" ]
-then
-  echo "Cross mingw32"
-  sed -i -e '/CMPLR_PREFIX/d' epics-base/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
-CMPLR_PREFIX=i686-w64-mingw32-
-EOF
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS+=win32-x86-mingw
-EOF
-fi
-
-if [ "$STATIC" = "YES" ]
-then
-  echo "Build static libraries/executables"
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-SHARED_LIBRARIES=NO
-STATIC_BUILD=YES
-EOF
-fi
-
-case "$CMPLR" in
-clang)
-  echo "Host compiler is clang"
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.Common.$EPICS_HOST_ARCH
-GNU         = NO
-CMPLR_CLASS = clang
-CC          = clang
-CCC         = clang++
-EOF
-
-  # hack
-  sed -i -e 's/CMPLR_CLASS = gcc/CMPLR_CLASS = clang/' epics-base/configure/CONFIG.gnuCommon
-
-  clang --version
-  ;;
-*)
-  echo "Host compiler is default"
-  gcc --version
-  ;;
-esac
-
-cat <<EOF >> epics-base/configure/CONFIG_SITE
-USR_CPPFLAGS += $USR_CPPFLAGS
-USR_CFLAGS += $USR_CFLAGS
-USR_CXXFLAGS += $USR_CXXFLAGS
-EOF
-
-# set RTEMS to eg. "4.9" or "4.10"
-# requires qemu, bison, flex, texinfo, install-info
-if [ -n "$RTEMS" ]
-then
-  echo "Cross RTEMS${RTEMS} for pc386"
-  curl -L "https://github.com/mdavidsaver/rsb/releases/download/20171203-${RTEMS}/i386-rtems${RTEMS}-trusty-20171203-${RTEMS}.tar.bz2" \
-  | tar -C / -xmj
-
-  sed -i -e '/^RTEMS_VERSION/d' -e '/^RTEMS_BASE/d' epics-base/configure/os/CONFIG_SITE.Common.RTEMS
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.Common.RTEMS
-RTEMS_VERSION=$RTEMS
-RTEMS_BASE=$HOME/.rtems
-EOF
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS += RTEMS-pc386-qemu
-EOF
-fi
-
-make -j2 -C epics-base $EXTRA
-make -j2 -C pvData $EXTRA
-make -j2 -C pvAccess $EXTRA

.github/workflows/ci-scripts-build.yml

@@ -0,0 +1,163 @@
+# .github/workflows/ci-scripts-build.yml for use with EPICS Base ci-scripts
+# (see: https://github.com/epics-base/ci-scripts)
+
+# This is YAML - indentation levels are crucial
+
+# Workflow name
+
+name: Base
+
+# Trigger on pushes and PRs to any branch
+on:
+  push:
+    paths-ignore:
+      - 'documentation/*'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'documentation/*'
+      - '.*.yml'
+
+env:
+    SETUP_PATH: .ci-local:.ci
+    EPICS_TEST_IMPRECISE_TIMING: YES
+
+jobs:
+  build-base:
+    name: ${{ matrix.name }}
+    runs-on: ${{ matrix.os }}
+    # Set environment variables from matrix parameters
+    env:
+      BASE: ${{ matrix.base }}
+      CMP: ${{ matrix.cmp }}
+      BCFG: ${{ matrix.configuration }}
+      CI_CROSS_TARGETS: ${{ matrix.cross }}
+      EXTRA: ${{ matrix.extra }}
+      TEST: ${{ matrix.test }}
+    strategy:
+      fail-fast: false
+      matrix:
+        # Job names also name artifacts, character limitations apply
+        include:
+          - os: ubuntu-20.04
+            cmp: gcc
+            configuration: default
+            base: "7.0"
+            cross: "windows-x64-mingw"
+            name: "7.0 Ub-20 gcc-9 + MinGW"
+
+          - os: ubuntu-20.04
+            cmp: gcc
+            configuration: static
+            base: "7.0"
+            cross: "windows-x64-mingw"
+            name: "7.0 Ub-20 gcc-9 + MinGW, static"
+
+          - os: ubuntu-20.04
+            cmp: gcc
+            configuration: static
+            base: "7.0"
+            extra: "CMD_CXXFLAGS=-std=c++11"
+            name: "7.0 Ub-20 gcc-9 C++11, static"
+
+          - os: ubuntu-20.04
+            cmp: clang
+            configuration: default
+            base: "7.0"
+            name: "7.0 Ub-20 clang-10"
+
+          - os: ubuntu-20.04
+            cmp: clang
+            configuration: default
+            base: "7.0"
+            extra: "CMD_CXXFLAGS=-std=c++11"
+            name: "7.0 Ub-20 clang-10 C++11"
+
+          - os: ubuntu-20.04
+            cmp: gcc
+            configuration: default
+            base: "7.0"
+            cross: "RTEMS-pc686-qemu@5"
+            name: "7.0 Ub-20 gcc-9 + RT-5.1 pc686"
+
+          - os: ubuntu-20.04
+            cmp: gcc
+            configuration: default
+            base: "7.0"
+            cross: "RTEMS-pc386-qemu@4.10"
+            test: NO
+            name: "7.0 Ub-20 gcc-9 + RT-4.10"
+
+          - os: ubuntu-20.04
+            cmp: gcc
+            configuration: default
+            base: "7.0"
+            cross: "RTEMS-pc386-qemu@4.9"
+            name: "7.0 Ub-20 gcc-9 + RT-4.9"
+
+          - os: macos-latest
+            cmp: clang
+            configuration: default
+            base: "7.0"
+            name: "7.0 MacOS clang-12"
+
+          - os: windows-2019
+            cmp: vs2019
+            configuration: default
+            base: "7.0"
+            name: "7.0 Win2019 MSC-19"
+            extra: "CMD_CXXFLAGS=-analysis"
+
+          - os: windows-2019
+            cmp: vs2019
+            configuration: static
+            base: "7.0"
+            name: "7.0 Win2019 MSC-19, static"
+            extra: "CMD_CXXFLAGS=-analysis"
+
+          - os: windows-2019
+            cmp: vs2019
+            configuration: debug
+            base: "7.0"
+            name: "7.0 Win2019 MSC-19, debug"
+
+          - os: windows-2019
+            cmp: gcc
+            configuration: default
+            base: "7.0"
+            name: "7.0 Win2019 mingw"
+
+          - os: ubuntu-20.04
+            cmp: gcc
+            configuration: default
+            base: "3.15"
+            wine: "64"
+            name: "3.15 Ub-20 gcc-9 + MinGW"
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: true
+    - name: Automatic core dump analysis
+      uses: mdavidsaver/ci-core-dumper@master
+    - name: "apt-get install"
+      run: |
+        sudo apt-get update
+        sudo apt-get -y install qemu-system-x86 g++-mingw-w64-x86-64 gdb
+      if: runner.os == 'Linux'
+    - name: Prepare and compile dependencies
+      run: python .ci/cue.py prepare
+    - name: Build main module
+      run: python .ci/cue.py build
+    - name: Run main module tests
+      run: python .ci/cue.py -T 20M test
+    - name: Upload tapfiles Artifact
+      if: ${{ always() }}
+      uses: actions/upload-artifact@v3
+      with:
+        name: tapfiles ${{ matrix.name }}
+        path: '**/O.*/*.tap'
+        if-no-files-found: ignore
+    - name: Collect and show test results
+      if: ${{ always() }}
+      run: python .ci/cue.py -T 5M test-results

.gitmodules

@@ -0,0 +1,3 @@
+[submodule ".ci"]
+	path = .ci
+	url = https://github.com/epics-base/ci-scripts

.travis.yml

@@ -1,31 +0,0 @@
-sudo: false
-dist: trusty
-language: c++
-compiler:
-  - gcc
-addons:
-  apt:
-    packages:
-    - libreadline6-dev
-    - libncurses5-dev
-    - perl
-    - clang
-    - g++-mingw-w64-i686
-    - qemu-system-x86
-install:
- - ./.ci/travis-prepare.sh
-script:
- - ./.ci/travis-build.sh
-env:
- - BRBASE=7.0
- - BRBASE=7.0 CMPLR=clang
- - BRBASE=7.0 EXTRA="CMD_CXXFLAGS=-std=c++98"
- - BRBASE=7.0 EXTRA="CMD_CXXFLAGS=-std=c++11"
- - BRBASE=7.0 CMPLR=clang EXTRA="CMD_CXXFLAGS=-std=c++11"
- - BRBASE=7.0 WINE=32 TEST=NO STATIC=YES
- - BRBASE=7.0 WINE=32 TEST=NO STATIC=NO
- - BRBASE=7.0 RTEMS=4.10 TEST=NO
- - BRBASE=7.0 RTEMS=4.9 TEST=NO
- - BRBASE=3.16
- - BRBASE=3.15
- 

Doxyfile

@@ -38,7 +38,7 @@ PROJECT_NAME           = pvDatabaseCPP
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 4.5.2
+PROJECT_NUMBER         = 4.7.2
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

configure/CONFIG_PVDATABASE_VERSION

@@ -1,7 +1,7 @@
 # Version number for the PV Database API and shared library
 
 EPICS_PVDATABASE_MAJOR_VERSION = 4
-EPICS_PVDATABASE_MINOR_VERSION = 5
+EPICS_PVDATABASE_MINOR_VERSION = 7
 EPICS_PVDATABASE_MAINTENANCE_VERSION = 2
 
 # Development flag, set to zero for release versions

documentation/RELEASE_NOTES.md

@@ -2,7 +2,63 @@
 
 This document summarizes the changes to the module between releases.
 
-## Release 4.5.2 (EPICS 7.0.3.2 May 2020)
+## Release 4.7.2 (EPICS 7.0.9, Feb 2025)
+
+* Resolved issue with changed field set in the case where the top level (master)
+field ("_") is not requested by the client, but the master field callback causes
+all fields to be marked as updated, rather than only those fields that have
+actually been modified.
+
+## Release 4.7.1 (EPICS 7.0.8, Dec 2023)
+
+* Added data distributor plugin which can be used for distributing data between 
+  a group of clients. The plugin is triggered by the request string of the
+  form:
+
+  `_[distributor=group:<group id>;set:<set_id>;trigger:<field_name>;updates:<n_updates>;mode:<update_mode>]`
+
+  The plugin parameters are optional and are described bellow:
+
+  - group: this parameter indicates a group that client application belongs to (default value: "default"); groups of clients are completely independent of each other
+
+  - set: this parameter designates a client set that application belongs to within its group (default value: "default")
+
+  - trigger: this is the PV structure field that distinguishes different channel updates (default value: "timeStamp"); for example, for area detector images one could use the "uniqueId" field of the NTND structure
+
+  - updates: this parameter configures how many sequential updates a client (or a set of clients) will receive before the data distributor starts updating the next one (default value: "1")
+
+  - mode: this parameter configures how channel updates are to be distributed between clients in a set:
+    - one: update goes to one client per set
+    - all: update goes to all clients in a set
+    - default is "one" if client set id is not specified, and "all" if set id is specified
+
+  For more information and examples of usage see the [plugin documentation](dataDistributorPlugin.md).
+
+## Release 4.7.0 (EPICS 7.0.7, Sep 2022)
+
+* Added support for the whole structure (master field) server side plugins.
+  The whole structure is identified as the `_` string, and a pvRequest string
+  that applies a plugin to it takes the form:
+
+  `field(_[XYZ=A:3;B:uniqueId])`
+
+  where `XYZ` is the name of a specific filter plugin that takes parameters
+  `A` and `B` with values `3` and `uniqueId` respectively.
+
+## Release 4.6.0 (EPICS 7.0.6, Jul 2021)
+
+* Access Security is now supported.
+* <b>special</b> has been revised and extended.
+* addRecord, removeRecord, processRecord, and traceRecord are replaced by pvdbcr versions.
+* <b>support</b> is DEPRECATED
+
+## Release 4.5.3 (EPICS 7.0.5, Feb 2021)
+
+* The previously deprecated destroy methods have been removed.
+  Any application code that was previously calling these can just remove
+  those calls.
+
+## Release 4.5.2 (EPICS 7.0.3.2, May 2020)
 
 * plugin support is new
 * fixed issues #53 and #52

documentation/TODO.md

@@ -1,8 +0,0 @@
-TODO
-===========
-
-
-create more regression tests
-----------------
-
-Currently only some simple tests exist. Most of the testing has been via the examples

documentation/dataDistributorPlugin.md

@@ -0,0 +1,233 @@
+# Data Distributor Plugin
+
+The data distributor plugin enables distribution of channel data between
+multiple client applications. The plugin considers two basic use cases
+for a group of clients: 
+
+- For simple parallel processing where client applications do not need
+to share data all clients in a group receive n sequential updates 
+in a round-robin fashion: client \#1 sees the first n updates, client \#2 the
+second n updates, and so on. 
+
+- For data analysis where several cooperating client applications must all
+see the same data in order to process it the applications are grouped 
+into sets, and each set of clients receives the same number of sequential 
+updates. The first n updates are sent to all members of client set #1, the second n updates are sent to all members of client set #2, and so on.
+
+## Requirements
+
+This plugin relies on the pvDatabase plugin framework and requires
+epics base version > 7.0.7
+
+## Usage
+
+The PV request object which triggers plugin instantiation is defined below:
+
+```
+"_[distributor=group:<group id>;set:<set_id>;trigger:<field_name>;updates:<n_updates>;mode:<update_mode>]"
+```
+
+The underscore character at the begining of the PV request object
+indicates that the data distributor will be targeting entire PV structure.
+The same PV request object format should work regardless of the language
+in which a particular client application is written.
+
+The plugin parameters are the following:
+
+- `group:<group_id>`: specifying a `group_id` names a group the client application belongs to (default value: `default`); clients with different group names are
+completely independent of each other
+
+- `set:<set_id>`: this parameter designates a client set that application belongs to within its group (default value: `default`)
+
+- `trigger:<field_name>`: this is the PV structure field that distinguishes 
+different channel updates (default value: `timeStamp`); for example,
+for area detector images one could use the `uniqueId` field of the NTND 
+structure
+
+- `updates:<n_updates>`: this parameter must be an integer and configures how many sequential updates a client (or a set of clients) will receive before the data distributor starts updating the next one (default value: `1`)
+
+- `mode:<update_mode>`: this parameter configures how channel updates are to be
+distributed between clients in a set:
+  - `one`: update goes to one client per set
+  - `all`: update goes to all clients in a set
+  - default is `one` if client set id is not specified, and `all` if set 
+    id is specified
+
+The plugin obeys the following rules:
+
+- Parameter names are case insensitive, but the string values
+are not. For example, "group=abc" and "group=ABC" would indicate two
+different groups of clients. String values allow alphanumeric characters,
+as well as dashes and underscores.
+
+- Updates for a set of clients are configured when the first client in
+the set requests data. Configuration values (i.e., "trigger", 
+"updates", and "mode"), passed in the PV request by the subsequent 
+clients are ignored.
+
+- A set is removed from the group once the last client in that
+set disconnects. 
+
+- A group is removed from the distributor plugin once all of its 
+clients have disconnected.
+
+- Different client groups are completely independent of each other.
+In other words, channel updates sent to clients belonging to 
+group A do not interfere with updates sent to clients
+belonging to group B.
+
+- The order in which clients and groups receive data is on a 
+"first connected, first served basis".
+
+- The current channel PV object is always distributed to a client on an 
+initial connect. 
+
+- Data distribution is dynamic with respect to the number of clients. 
+As clients connect and disconnect, the data distribution in a group adjusts
+accordingly. For example, with a group of clients configured to 
+distribute one sequential update to each client, three clients would each be
+receiving every third update; after client number four connects, all 
+clients would start receiving every fourth update; if one of those then
+disconnects, remaining three clients would again be receiving every third
+update. 
+
+## Examples
+
+For all examples below we assume that PVDatabase server is serving
+area detector images on the channel 'image'. All clients are started before
+the server itself, and the initial (empty) object has unique id of 0.
+
+### Example 1
+
+This example show behavior of three clients that belong to the same (default)
+group. Each client receives one sequential update in a round-robin fashion. 
+Note that all clients received current object on initial connection, 
+and every third object afterward:
+
+Client 1:
+```
+$ pvget -m -r _[distributor=trigger:uniqueId] image | grep uniqueId
+    int uniqueId 0
+    int uniqueId 1
+    int uniqueId 4
+    int uniqueId 7
+    int uniqueId 10
+```
+
+Client 2:
+```
+$ pvget -m -r _[distributor=trigger:uniqueId] image | grep uniqueId
+    int uniqueId 0
+    int uniqueId 2
+    int uniqueId 5
+    int uniqueId 8
+    int uniqueId 11
+```
+
+Client 3:
+```
+$ pvget -m -r _[distributor=trigger:uniqueId] image | grep uniqueId 
+    int uniqueId 0
+    int uniqueId 3
+    int uniqueId 6
+    int uniqueId 9
+    int uniqueId 12
+```
+
+### Example 2
+
+In this example we have two sets of two clients, each client set receiving 
+three sequential updates. Both clients from client set \#1 receive updates 
+(1,2,3), both clients from client set \#2 receive updates (4,5,6), 
+client set \#1 receives updates (7,8,9), and so on.
+
+Client 1 and Client 2/Set 1:
+```
+$ pvget -m -r "_[distributor=set:S1;trigger:uniqueId;updates:3]" image  | grep uniqueId
+    int uniqueId 0
+    int uniqueId 1
+    int uniqueId 2
+    int uniqueId 3
+    int uniqueId 7
+    int uniqueId 8
+    int uniqueId 9
+    int uniqueId 13
+    int uniqueId 14
+    int uniqueId 15
+```
+
+Client 3 and Client 4/Set 2:
+```
+$ pvget -m -r "_[distributor=set:S2;trigger:uniqueId;updates:3]" image  | grep uniqueId
+    int uniqueId 0
+    int uniqueId 4
+    int uniqueId 5
+    int uniqueId 6
+    int uniqueId 10
+    int uniqueId 11
+    int uniqueId 12
+    int uniqueId 16
+    int uniqueId 17
+    int uniqueId 18
+```
+
+### Example 3
+
+This example illustrates what happens when multiple independent groups of 
+clients connect to the same channel. Group G1 has two clients belonging
+to the same default set, and requesting one sequential update per client, while
+Group G2 has two clients in the default set requesting three
+sequential updates per client.
+
+In this case the first client in group G1 receives updates
+(1,3,5,...), while the second one receives updates (2,4,6,...). On the
+other hand, the first client in group G2 receives updates
+(1,2,3,7,8,9,...), while the second one receives updates (4,5,6,10,11,12,...).
+
+Client 1/Group G1:
+```
+$ pvget -m -r "_[distributor=group:G1;trigger:uniqueId]" image | grep uniqueId
+    int uniqueId 0
+    int uniqueId 1
+    int uniqueId 3
+    int uniqueId 5
+    int uniqueId 7
+    int uniqueId 9
+```
+
+Client 2/Group G1:
+```
+pvget -m -r "_[distributor=group:G1;trigger:uniqueId]" image | grep uniqueId
+    int uniqueId 0
+    int uniqueId 2
+    int uniqueId 4
+    int uniqueId 6
+    int uniqueId 8
+```
+
+Client 1/Group G2:
+```
+$ pvget -m -r "_[distributor=group:G2;trigger:uniqueId;updates:3]" image | grep uniqueId
+    int uniqueId 0
+    int uniqueId 1
+    int uniqueId 2
+    int uniqueId 3
+    int uniqueId 7
+    int uniqueId 8
+    int uniqueId 9
+```
+
+Client 2/Group G2:
+```
+$ pvget -m -r "_[distributor=group:G2;trigger:uniqueId;updates:3]" image | grep uniqueId
+    int uniqueId 0
+    int uniqueId 4
+    int uniqueId 5
+    int uniqueId 6
+    int uniqueId 10
+    int uniqueId 11
+    int uniqueId 12
+```
+
+The above shows that the two client groups do not interfere with each other.
+

documentation/pvDatabaseCPP.html

@@ -4,72 +4,66 @@
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
   <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
-  <title>pvDatabaseCPP</title>
+  <title>EPICS pvDatabaseCPP</title>
   <link rel="stylesheet" type="text/css"
-  href="http://epics-pvdata.sourceforge.net/base.css" />
+  href="https://mrkraimer.github.io/website/css/base.css" />
   <link rel="stylesheet" type="text/css"
-  href="http://epics-pvdata.sourceforge.net/epicsv4.css" />
+  href="https://mrkraimer.github.io/website/css/epicsv4.css" />
   <style type="text/css">
-  /*<![CDATA[*/
+/*<![CDATA[*/
      .about { margin-left: 3em; margin-right: 3em; font-size: .83em}
      table { margin-left: auto; margin-right: auto }
      .diagram { text-align: center; margin: 2.5em 0 }
-     span.opt { color: grey }
-     span.nterm { font-style:italic }
-     span.term { font-family:courier }
-     span.user { font-family:courier }
-     span.user:before { content:"<" }
-     span.user:after { content:">" }
-     .nonnorm { font-style:italic }
-     p.ed { color: #AA0000 }
-     span.ed { color: #AA0000 }
-     p.ed.priv { display: inline; }
-     span.ed.priv { display: inline; }
-  /*]]>*/</style>
-  <!-- Script that generates the Table of Contents -->
-  <script type="text/javascript"
-  src="http://epics-pvdata.sourceforge.net/script/tocgen.js">
- </script>
+     body { margin-right: 10% }
+/*]]>*/</style>
+
+ <!-- Script that generates the Table of Contents -->
+  <script type="text/javascript" src="https://mrkraimer.github.io/website/css/tocgen.js"></script>
+
 </head>
 
 <body>
 
 <div class="head">
-<h1>pvDatabaseCPP</h1>
-<h2 class="nocount">Release ? - TBD</h2>
-Latest update 2019.09.11.
-
+<h1>EPICS pvDatabaseCPP</h1>
+<h2 class="nocount">Release 4.6.0 - March 2021</h2>
 
 <h2 class="nocount">Abstract</h2>
 
-<p>This document describes pvDatabaseCPP,
-which is a framework for implementing a network accessible database of smart memory resident
+<p><b>pvDatabase</b> is a framework for implementing a network accessible database of smart memory resident
 records. Network access is via pvAccess. The data in each record is a top level PVStructure as defined by
 pvData. The framework includes a complete implementation of ChannelProvider as defined by pvAccess.
 The framework can be extended in order to create record instances that implements services.
 The minimum that an extension must provide is a top level PVStructure and a process method.
 </p>
+
   <!-- last para of Abstract is boilerplate reference to EPICS -->
       <p>For more information about EPICS generally, please refer to the home page of the <a
        href="http://www.aps.anl.gov/epics/">Experimental Physics and Industrial
       Control System</a>.</p>
 
 
-</div>
-
-<div id="toc">
-  <h2 class="nocount">Table of Contents</h2>
-</div>
+</div> <!-- head -->
 
 <div id="contents" class="contents">
 <hr />
-
 <h2>Overview</h2>
 <p>
+Documentation for pvDatabaseCPP is available at:
+<a
+href="https://mrkraimer.github.io/website/developerGuide/pvDatabase/pvDatabaseCPP.html">
+pvDatabase
+</a>
+</p>
+<p>
 pvDatabaseCPP is one of the components of
-EPICS Version 7
+<a href="https://epics-controls.org/resources-and-support/base/epics-7/">
+EPICS-7
+</a>
 </p>
 <p>This document is only a guide to help locate code and documentation related to pvDatabaseCPP
+</p>
+<p>
 It is intended for developers that want to use pvDatabaseCPP.
 </p>
 <h2>Developer Guide</h2>
@@ -79,204 +73,28 @@ href="https://mrkraimer.github.io/website/developerGuide/developerGuide.html">
 developerGuide
 </a>
 </p>
-<p>This guide discusses all the components that are part of an <b>EPICS V4</b> release.
+<p>This guide provides an overview of  the components that are part of an <b>EPICS V4</b> release.
 Some understanding of the components and how they are related is necessary in order to
 develop code that uses pvDatabaseCPP.
-In particular read everything related to pvDatabase.
-</p>
-<p>pvDatabase has plugin support, which is implemented in <b>pvCopy</b>.
-<b>pvCopy</b> was originally implemented in <b>pvDataCPP</b>,
-but pvDatabaseCPP now implements its own version and adds plugin support.
-</p>
-<p>
-See
-<a
-href="https://mrkraimer.github.io/website/pvRequest/pvRequest.html">
-pvRequest
-</a>
-for details.
-</p>
-<p>The developerGuide discusses code in a way that applies to both CPP and C++.
-For the descriptions of the CPP specific code consult the following sections.
+In particular read everything related to pvaClient.
 </p>
 
 <h2>doxygen</h2>
 <p>doxygen documentation is available at
 <a
-href="./html/index.html">doxgen</a>
+href="./html/index.html">doxygen</a>
 </p>
 
-<h2>pvDatabaseCPP</h2>
-<h3>include/pv</h3>
-<p>The header files that describe the various components implemented by pvDatabase.
-</p>
-<dl>
-   <dt>pvDatabase.h</dt>
-   <dd>
-    This describes PVRecord and PVDatabase.
-   </dd>
-   <dt>channelProviderLocal.h </dt>
-   <dd>
-    This describes a channel provider for PVDatabase
-   </dd>
-   <dt>pvSupport.h</dt>
-   <dd>
-    This is the base class for support attached to a field of a record.
-   </dd>
-   <dt>controlSupport.h</dt>
-   <dd>
-    This is support that implements control limits.
-   </dd>
-   <dt>scalarAlarmSupport.h</dt>
-   <dd>
-     This is support for a alarm limits for a scalar numeric field.
-   </dd>
-   <dt>processRecord.h</dt>
-   <dd>
-   This is a PVRecord that periodical processes a set of PVRecords in the local PVDatabase.
-   </dd>
-   <dt>addRecord.h</dt>
-   <dd>
-    This is a PVRecord that adds a new PVRecord to the local PVDatabase.
-   </dd>
-   <dt>removeRecord.h</dt>
-   <dd>
-    This is a PVRecord that removes a PVRecord in the local PVDatabase.
-   </dd>
-   <dt>traceRecord.h</dt>
-   <dd>
-    This is a PVRecord that sets the trace value for another PVRecord in the local PVDatabase.
-   </dd>
-   <dt>pvStructureCopy.h</dt>
-   <dd>
-    This is a facility that allows a client to access a subfield of the fields in a PVRecord.
-    It also provides record and field options an plugin support.
-   </dd>
-   <dt>pvPlugin.h</dt>
-   <dd>
-    This is the base class for a plugin attached to a record or field of PVRecord.
-   </dd>
-   <dt>pvArrayPlugin.h</dt>
-   <dd>
-     A plugin for accessing a subset of the elements in an array field.
-   </dd>
-   <dt>pvDeadbandPlugin.h</dt>
-   <dd>
-    A deadband plugin for monitors.
-   </dd>
-   <dt>pvTimestampPlugin.h</dt>
-   <dd>
-    A plugin for timeStamp.
-   </dd>
-</dl>
-<h3>src/database</h3>
-<p>This has the code that implements pvDatabase and pvRecord.</p>
-<h3>src/pvAccess</h3>
-<p>This has the code for the channel provider for pvDatabase.
-</p>
-<h3>src/support</h3>
-<p>This has the pvSupport code.</p>
-<h3>src/special</h3>
-<p>
-This has the code for processRecord, addRecord, removeRecord, and traceRecord.
-</p>
-<h3>src/copy</h3>
-<p>This has the code for pvStructureCopy and all the plugin support.
-</p> 
 <h2>exampleCPP</h2>
-<p>Example code is available as part of this release.
+<p>Example code is available at
 <a
 href="https://github.com/epics-base/exampleCPP">
 exampleCPP
 </a>
 </p>
-<p>In particular look at the example code mentioned in the following sub-sections.
+<p>In particular look at database, exampleLink, and helloPutGet.
 </p>
 
-<h3>database</h3>
-<p>This has many examples of how to create both soft records and records that implement
-other functionality.</p>
-<dl>
-   <dt>exampleDatabase.cpp</dt>
-     <dd>
-      This shows how to create soft records of each pvData type.<br />
-      In addition shows how to create instances of the following two records.
-     </dd>
-   <dt>exampleHelloRecord.cpp</dt>
-     <dd>
-       This is a simple "hello world" that is intentended to be used via a channelPutGet request.
-     </dd>
-   <dt>exampleHelloRPC.cpp</dt>
-     <dd>
-       This is a simple "hello world" that is intentended to be used via a channelRPC request.
-     </dd>
-   <dt>exampleDatabaseMain.cpp</dt>
-     <dd>
-      This shows how to create a standalone IOC.
-     </dd>
-   <dt>ioc and iocBoot</dt>
-     <dd>
-      This has code and examples to create a V3 IOC which also has a PVDatabase.
-     </dd>
-</dl>
-<h3>exampleLink</h3>
-<p>This shows how to implement a record that has a link to another record</p>
-<dl>
-  <dt>exampleMonitorLinkRecord</dt>
-     <dd>
-      This creates a monitor link to another record.
-     </dd>
-  <dt>exampleGetLinkRecord</dt>
-     <dd>
-      This creates a get link to another record.
-     </dd>
-  <dt>examplePutLinkRecord</dt>
-     <dd>
-      This creates a put link to another record.
-     </dd>
-</dl>
-
-<h3>support</h3>
-<p>This creates records that have the following features:</p>
-<dl>
-   <dt>value</dt>
-   <dd>
-    Each record has a value field the is a numeric scalar field.
-    In addition each has the following fields:
-    alarm,timeStamp,control,scalarAlarm, and display.
-   </dd>
-   <dt>support</dt>
-   <dd>
-     Each record uses the control and scalarAlarm support provided by pvDatabaseCPP.
-   </dd>
-</dl>
-<p>
-It also creates records that can be used by clients to show example of the plugin support.
-</p>
-
-<h2>iocshell commands</h2>
-<p>Shell commands are made available via the standard DBD include mechanism
-provided by iocCore.
-The following provide EPICS V4 shell commands:</p>
-<pre>
-pvAccessCPP
-qsrv
-pvDatabaseCPP
-</pre>
-
-<p>pvDatabaseCPP provides the following iocshell command.</p>
-<dl>
-   <dt>registerChannelProviderLocal</dt>
-     <dd>Including <b>registerChannelProviderLocal.dbd</b> as a dbd file automatically starts provider local
-      and also creates the pvdbl shell command.
-     </dd>
-   <dt>pvdbl</dt>
-      <dd>Provides a list of all the pvRecords in database <b>master</b>
-      </dd>
-</dl>
-<p>In addition any code that implements a PVRecord must implement an ioc command.
-Look at the examples in <b>exampleCPP/support</b> to see how to implement shell commands.</p>
-
-</div>
+</div> <!-- class="contents" -->
 </body>
 </html>

jenkins/cloudbees_build

@@ -1,79 +0,0 @@
-# pvDatabase C++ implementation
-# Jenkins @ Cloudbees build script
-#
-# Jenkins invokes scripts with the "-ex" option. So the build is considered a failure
-# if any of the commands exits with a non-zero exit code.
-#
-# Author: Ralph Lange <ralph.lange@gmx.de>
-# Copyright (C) 2014 Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
-# Copyright (C) 2014-2016 ITER Organization.
-# All rights reserved. Use is subject to license terms.
-
-installTool () {
-    local module=$1
-    local version=$2
-
-    wget -nv https://openepics.ci.cloudbees.com/job/${module}-${version}_Build/lastSuccessfulBuild/artifact/${module,,}-${version}.CB-dist.tar.gz
-    tar -xzf ${module,,}-${version}.CB-dist.tar.gz
-}
-
-installE4 () {
-    local module=$1
-    local branch=$2
-
-    wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE}/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
-    tar -xzf ${module}.CB-dist.tar.gz
-}
-
-###########################################
-# Defaults for EPICS Base
-
-DEFAULT_BASE=3.15.4
-BASE=${BASE:-${DEFAULT_BASE}}
-
-###########################################
-# Dependent module branches
-
-PVDATA_BRANCH="master"
-PVACCESS_BRANCH="master"
-
-###########################################
-# Fetch and unpack dependencies
-
-export STUFF=/tmp/stuff
-
-rm -fr ${STUFF}
-mkdir -p ${STUFF}
-cd ${STUFF}
-
-installTool Boost 1.61.0
-installTool Base ${BASE}
-
-installE4 pvData ${PVDATA_BRANCH}
-installE4 pvAccess ${PVACCESS_BRANCH}
-
-###########################################
-# Build
-
-cd ${WORKSPACE}
-
-export EPICS_BASE=${STUFF}
-export EPICS_HOST_ARCH=$(${EPICS_BASE}/startup/EpicsHostArch)
-export LD_LIBRARY_PATH=${EPICS_BASE}/lib/${EPICS_HOST_ARCH}
-export PATH=${STUFF}/bin:${PATH}
-
-cat > configure/RELEASE.local << EOF
-EPICS_BASE=${EPICS_BASE}
-EOF
-
-make distclean all
-
-###########################################
-# Test
-
-make runtests
-
-###########################################
-# Create cache
-
-tar -czf pvDatabase.CB-dist.tar.gz lib include dbd LICENSE

jenkins/cloudbees_doc

@@ -1,66 +0,0 @@
-# pvDatabase C++ implementation
-# Jenkins @ Cloudbees documentation generation and deployment
-#
-# Jenkins invokes scripts with the "-ex" option. So the build is considered a failure
-# if any of the commands exits with a non-zero exit code.
-#
-# Author: Ralph Lange <ralph.lange@gmx.de>
-# Copyright (C) 2014 Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
-# Copyright (C) 2014-2016 ITER Organization.
-# All rights reserved. Use is subject to license terms.
-
-installTool () {
-    local module=$1
-    local version=$2
-
-    wget -nv https://openepics.ci.cloudbees.com/job/${module}-${version}_Build/lastSuccessfulBuild/artifact/${module,,}-${version}.CB-dist.tar.gz
-    tar -xzf ${module,,}-${version}.CB-dist.tar.gz
-}
-
-installE4 () {
-    local module=$1
-    local branch=$2
-
-    wget -nv https://openepics.ci.cloudbees.com/job/e4-cpp-${module}-${branch}-build/BASE=${BASE}/lastSuccessfulBuild/artifact/${module}.CB-dist.tar.gz
-    tar -xzf ${module}.CB-dist.tar.gz
-}
-
-###########################################
-# Defaults for EPICS Base and parameters
-
-BASE=3.15.4
-PUBLISH=${PUBLISH:-NO}
-BRANCH=${BRANCH:-master}
-
-###########################################
-# Fetch and unpack dependencies
-
-export STUFF=/tmp/stuff
-
-rm -fr ${STUFF}
-mkdir -p ${STUFF}
-cd ${STUFF}
-
-installTool Doxygen 1.8.11
-
-###########################################
-# Generate
-
-cd ${WORKSPACE}
-
-installE4 pvDatabase ${BRANCH}
-
-export PATH=${STUFF}/bin:${PATH}
-
-doxygen
-
-###########################################
-# Publish
-
-if [ "${PUBLISH}" != "DONT" ]; then
-    # Upload explicit dummy to ensure target directory exists
-    echo "Created by CloudBees Jenkins upload job. Should be deleted as part of the job." > DUMMY
-    rsync -q -e ssh DUMMY epics-jenkins@web.sourceforge.net:/home/project-web/epics-pvdata/htdocs/docbuild/pvDatabaseCPP/${PUBLISH}/
-
-    rsync -aqP --delete -e ssh documentation epics-jenkins@web.sourceforge.net:/home/project-web/epics-pvdata/htdocs/docbuild/pvDatabaseCPP/${PUBLISH}/
-fi

src/Makefile

@@ -3,15 +3,8 @@
 TOP = ..
 include $(TOP)/configure/CONFIG
 
-# needed for Windows
-LIB_SYS_LIBS_WIN32 += netapi32 ws2_32
-
 PVDATABASE_SRC = $(TOP)/src
 
-LIBRARY += pvDatabase
-
-# shared library ABI version.
-SHRLIB_VERSION ?= $(EPICS_PVDATABASE_MAJOR_VERSION).$(EPICS_PVDATABASE_MINOR_VERSION).$(EPICS_PVDATABASE_MAINTENANCE_VERSION)
 
 INC += pv/pvPlugin.h
 INC += pv/pvStructureCopy.h
@@ -23,23 +16,32 @@ INC += pv/pvDatabase.h
 
 INC += pv/channelProviderLocal.h
 
-INC += pv/traceRecord.h
-INC += pv/removeRecord.h
-INC += pv/addRecord.h
-INC += pv/processRecord.h
-
 INC += pv/pvSupport.h
 INC += pv/controlSupport.h
 INC += pv/scalarAlarmSupport.h
 
+INC += pv/pvdbcrScalarRecord.h
+INC += pv/pvdbcrScalarArrayRecord.h
+INC += pv/pvdbcrAddRecord.h
+INC += pv/pvdbcrRemoveRecord.h
+INC += pv/pvdbcrProcessRecord.h
+INC += pv/pvdbcrTraceRecord.h
 
 include $(PVDATABASE_SRC)/copy/Makefile
 include $(PVDATABASE_SRC)/database/Makefile
 include $(PVDATABASE_SRC)/pvAccess/Makefile
-include $(PVDATABASE_SRC)/special/Makefile
 include $(PVDATABASE_SRC)/support/Makefile
+include $(PVDATABASE_SRC)/special/Makefile
 
-pvDatabase_LIBS += $(EPICS_BASE_PVA_CORE_LIBS)
-pvDatabase_LIBS += $(EPICS_BASE_IOC_LIBS)
+LIBRARY += pvDatabase
+pvDatabase_LIBS += pvData
+pvDatabase_LIBS += pvAccess
+LIB_LIBS += Com
+
+# shared library ABI version.
+SHRLIB_VERSION ?= $(EPICS_PVDATABASE_MAJOR_VERSION).$(EPICS_PVDATABASE_MINOR_VERSION).$(EPICS_PVDATABASE_MAINTENANCE_VERSION)
+
+# needed for Windows
+LIB_SYS_LIBS_WIN32 += netapi32 ws2_32
 
 include $(TOP)/configure/RULES

src/copy/Makefile

@@ -8,5 +8,6 @@ LIBSRCS += pvCopy.cpp
 LIBSRCS += pvArrayPlugin.cpp
 LIBSRCS += pvDeadbandPlugin.cpp
 LIBSRCS += pvTimestampPlugin.cpp
+LIBSRCS += dataDistributorPlugin.cpp
 
 

src/copy/dataDistributorPlugin.cpp

@@ -0,0 +1,428 @@
+// Copyright information and license terms for this software can be
+// found in the file LICENSE that is included with the distribution
+
+#include <stdlib.h>
+
+#include <cctype>
+#include <string>
+#include <algorithm>
+#include <pv/lock.h>
+#include <pv/pvData.h>
+#include <pv/bitSet.h>
+
+#define epicsExportSharedSymbols
+#include "pv/dataDistributorPlugin.h"
+
+using std::string;
+using std::size_t;
+using std::endl;
+using std::tr1::static_pointer_cast;
+using std::vector;
+using namespace epics::pvData;
+namespace epvd = epics::pvData;
+
+namespace epics { namespace pvCopy {
+
+// Utilities for manipulating strings
+static std::string leftTrim(const std::string& s)
+{
+    unsigned int i;
+    unsigned int n = (unsigned int)s.length();
+    for (i = 0; i < n; i++) {
+        if (!isspace(s[i])) {
+            break;
+        }
+    }
+    return s.substr(i,n-i);
+}
+
+static std::string rightTrim(const std::string& s)
+{
+    unsigned int i;
+    unsigned int n = (unsigned int)s.length();
+    for (i = n; i > 0; i--) {
+        if (!isspace(s[i-1])) {
+            break;
+        }
+    }
+    return s.substr(0,i);
+}
+
+static std::string trim(const std::string& s)
+{
+    return rightTrim(leftTrim(s));
+}
+
+static std::vector<std::string>& split(const std::string& s, char delimiter, std::vector<std::string>& elements)
+{
+    std::stringstream ss(s);
+    std::string item;
+    while (std::getline(ss, item, delimiter)) {
+        elements.push_back(trim(item));
+    }
+    return elements;
+}
+
+static std::vector<std::string> split(const std::string& s, char delimiter)
+{
+    std::vector<std::string> elements;
+    split(s, delimiter, elements);
+    return elements;
+}
+
+static std::string toLowerCase(const std::string& input)
+{
+    std::stringstream ss;
+    for (unsigned int i = 0; i < input.size(); i++) {
+        char c = std::tolower(input.at(i));
+        ss << c;
+    }
+    return ss.str();
+}
+
+// Data distributor class
+
+static std::string name("distributor");
+bool DataDistributorPlugin::initialized(false);
+
+std::map<std::string, DataDistributorPtr> DataDistributor::dataDistributorMap;
+epics::pvData::Mutex DataDistributor::dataDistributorMapMutex;
+
+DataDistributorPtr DataDistributor::getInstance(const std::string& groupId)
+{
+    epvd::Lock lock(dataDistributorMapMutex);
+    std::map<std::string,DataDistributorPtr>::iterator ddit = dataDistributorMap.find(groupId);
+    if (ddit != dataDistributorMap.end()) {
+        DataDistributorPtr ddPtr = ddit->second;
+        return ddPtr;
+    }
+    else {
+        DataDistributorPtr ddPtr(new DataDistributor(groupId));
+        dataDistributorMap[groupId] = ddPtr;
+        return ddPtr;
+    }
+}
+
+void DataDistributor::removeUnusedInstance(DataDistributorPtr dataDistributorPtr)
+{
+    epvd::Lock lock(dataDistributorMapMutex);
+    std::string groupId = dataDistributorPtr->getGroupId();
+    std::map<std::string,DataDistributorPtr>::iterator ddit = dataDistributorMap.find(groupId);
+    if (ddit != dataDistributorMap.end()) {
+        DataDistributorPtr ddPtr = ddit->second;
+        size_t nSets = ddPtr->clientSetMap.size();
+        if (nSets == 0) {
+            dataDistributorMap.erase(ddit);
+        }
+    }
+}
+
+DataDistributor::DataDistributor(const std::string& groupId_)
+    : groupId(groupId_)
+    , mutex()
+    , clientSetMap()
+    , clientSetIdList()
+    , currentSetIdIter(clientSetIdList.end())
+    , lastUpdateValue()
+{
+}
+
+DataDistributor::~DataDistributor()
+{
+    epvd::Lock lock(mutex);
+    clientSetMap.clear();
+    clientSetIdList.clear();
+}
+
+std::string DataDistributor::addClient(int clientId, const std::string& setId, const std::string& triggerField, int nUpdatesPerClient, int updateMode)
+{
+    epvd::Lock lock(mutex);
+    std::map<std::string,ClientSetPtr>::iterator git = clientSetMap.find(setId);
+    if (git != clientSetMap.end()) {
+        ClientSetPtr setPtr = git->second;
+        setPtr->clientIdList.push_back(clientId);
+        return setPtr->triggerField;
+    }
+    else {
+        ClientSetPtr setPtr(new ClientSet(setId, triggerField, nUpdatesPerClient, updateMode));
+        setPtr->clientIdList.push_back(clientId);
+        clientSetMap[setId] = setPtr;
+        clientSetIdList.push_back(setId);
+        return triggerField;
+    }
+}
+
+void DataDistributor::removeClient(int clientId, const std::string& setId)
+{
+    epvd::Lock lock(mutex);
+    std::map<std::string,ClientSetPtr>::iterator git = clientSetMap.find(setId);
+    if (git != clientSetMap.end()) {
+        ClientSetPtr setPtr = git->second;
+        std::list<int>::iterator cit = std::find(setPtr->clientIdList.begin(), setPtr->clientIdList.end(), clientId);
+        if (cit != setPtr->clientIdList.end()) {
+            // If we are removing current client id, advance iterator
+            if (cit == setPtr->currentClientIdIter) {
+                setPtr->currentClientIdIter++;
+            }
+
+            // Find current client id 
+            int currentClientId = -1;
+            if (setPtr->currentClientIdIter != setPtr->clientIdList.end()) {
+                currentClientId = *(setPtr->currentClientIdIter);
+            }
+
+            // Remove client id from the list
+            setPtr->clientIdList.erase(cit);
+
+             // Reset current client id iterator
+            setPtr->currentClientIdIter = setPtr->clientIdList.end();
+            if (currentClientId >= 0) {
+                std::list<int>::iterator cit2 = std::find(setPtr->clientIdList.begin(), setPtr->clientIdList.end(), currentClientId);
+                if (cit2 != setPtr->clientIdList.end()) {
+                    setPtr->currentClientIdIter = cit2;
+                }
+            }
+        }
+       
+        if (setPtr->clientIdList.size() == 0) {
+            clientSetMap.erase(git);
+            std::list<std::string>::iterator git2 = std::find(clientSetIdList.begin(), clientSetIdList.end(), setId);
+            if (git2 == currentSetIdIter) {
+                currentSetIdIter++;
+            }
+            if (git2 != clientSetIdList.end()) {
+                clientSetIdList.erase(git2);
+            }
+        }
+    }
+}
+
+bool DataDistributor::updateClient(int clientId, const std::string& setId, const std::string& triggerFieldValue)
+{
+    epvd::Lock lock(mutex);
+    bool proceedWithUpdate = false;
+    if (currentSetIdIter == clientSetIdList.end()) {
+        currentSetIdIter = clientSetIdList.begin();
+    }
+    std::string currentSetId = *currentSetIdIter;
+    if (setId != currentSetId) {
+        // We are not distributing data to this set at the moment
+        return proceedWithUpdate;
+    }
+    ClientSetPtr setPtr = clientSetMap[currentSetId];
+    if (setPtr->currentClientIdIter == setPtr->clientIdList.end()) {
+        // Move current client iterator to the beginning of the list
+        setPtr->currentClientIdIter = setPtr->clientIdList.begin();
+    }
+    if (lastUpdateValue == triggerFieldValue) {
+        // This update was already distributed.
+        return proceedWithUpdate;
+    }
+    switch (setPtr->updateMode) {
+        case(DD_UPDATE_ONE_PER_GROUP): {
+            if (clientId != *(setPtr->currentClientIdIter)) {
+                // Not this client's turn.
+                return proceedWithUpdate;
+            }
+            proceedWithUpdate = true;
+            lastUpdateValue = triggerFieldValue;
+            setPtr->lastUpdateValue = triggerFieldValue;
+            setPtr->updateCounter++;
+            if (setPtr->updateCounter >= setPtr->nUpdatesPerClient) {
+                // This client and set are done.
+                setPtr->currentClientIdIter++;
+                setPtr->updateCounter = 0;
+                currentSetIdIter++;
+            }
+            break;
+        }
+        case(DD_UPDATE_ALL_IN_GROUP): {
+            proceedWithUpdate = true;
+            static unsigned int nClientsUpdated = 0;
+            if (setPtr->lastUpdateValue != triggerFieldValue) {
+                setPtr->lastUpdateValue = triggerFieldValue;
+                setPtr->updateCounter++;
+                nClientsUpdated = 0;
+            }
+            nClientsUpdated++;
+            if (nClientsUpdated == setPtr->clientIdList.size() && setPtr->updateCounter >= setPtr->nUpdatesPerClient) {
+                // This set is done.
+                lastUpdateValue = triggerFieldValue;
+                setPtr->updateCounter = 0;
+                currentSetIdIter++;
+            }
+            break;
+        }
+        default: {
+            proceedWithUpdate = true;
+        }
+    }
+    return proceedWithUpdate;
+}
+
+DataDistributorPlugin::DataDistributorPlugin()
+{
+}
+
+DataDistributorPlugin::~DataDistributorPlugin()
+{
+}
+
+void DataDistributorPlugin::create()
+{
+    initialize();
+}
+
+bool DataDistributorPlugin::initialize()
+{
+    if (!initialized) {
+        initialized = true;
+        DataDistributorPluginPtr pvPlugin = DataDistributorPluginPtr(new DataDistributorPlugin());
+        PVPluginRegistry::registerPlugin(name,pvPlugin);
+    }
+    return true;
+}
+
+PVFilterPtr DataDistributorPlugin::create(
+     const std::string& requestValue,
+     const PVCopyPtr& pvCopy,
+     const PVFieldPtr& master)
+{
+    return DataDistributorFilter::create(requestValue,pvCopy,master);
+}
+
+DataDistributorFilter::~DataDistributorFilter()
+{
+    dataDistributorPtr->removeClient(clientId, setId);
+    DataDistributor::removeUnusedInstance(dataDistributorPtr);
+}
+
+DataDistributorFilterPtr DataDistributorFilter::create(
+     const std::string& requestValue,
+     const PVCopyPtr& pvCopy,
+     const PVFieldPtr& master)
+{
+    static int clientId = 0;
+    clientId++;
+      
+    std::vector<std::string> configItems = split(requestValue, ';');
+    // Use lowercase keys if possible.
+    std::string requestValue2 = toLowerCase(requestValue); 
+    std::vector<std::string> configItems2 = split(requestValue2, ';');
+    int nUpdatesPerClient = 1;
+    int updateMode = DataDistributor::DD_UPDATE_ONE_PER_GROUP;
+    std::string groupId = "default";
+    std::string setId = "default";
+    std::string triggerField = "timeStamp";
+    bool hasUpdateMode = false;
+    bool hasSetId = false;
+    for(unsigned int i = 0; i < configItems2.size(); i++) {
+        std::string configItem2 = configItems2[i];
+        size_t ind = configItem2.find(':');
+        if (ind == string::npos) {
+            continue;
+        }
+        if(configItem2.find("updates") == 0) {
+            std::string svalue = configItem2.substr(ind+1);
+            nUpdatesPerClient = atoi(svalue.c_str());
+        }
+        else if(configItem2.find("group") == 0) {
+            std::string configItem = configItems[i];
+            groupId = configItem.substr(ind+1);
+        }
+        else if(configItem2.find("set") == 0) {
+            std::string configItem = configItems[i];
+            setId = configItem.substr(ind+1);
+            hasSetId = true;
+        }
+        else if(configItem2.find("mode") == 0) {
+            std::string svalue = toLowerCase(configItem2.substr(ind+1));
+            if (svalue == "one") {
+                updateMode = DataDistributor::DD_UPDATE_ONE_PER_GROUP;
+                hasUpdateMode = true;
+            }
+            else if (svalue == "all") {
+                updateMode = DataDistributor::DD_UPDATE_ALL_IN_GROUP;
+                hasUpdateMode = true;
+            }
+        }
+        else if(configItem2.find("trigger") == 0) {
+            std::string configItem = configItems[i];
+            triggerField = configItem.substr(ind+1);
+        }
+    }
+    // If request does not have update mode specified, but has set id
+    // then use a different update mode
+    if(!hasUpdateMode && hasSetId) {
+        updateMode = DataDistributor::DD_UPDATE_ALL_IN_GROUP;
+    }
+
+    // Make sure request is valid
+    if(nUpdatesPerClient <= 0) {
+        return DataDistributorFilterPtr();
+    }
+    DataDistributorFilterPtr filter =
+         DataDistributorFilterPtr(new DataDistributorFilter(groupId, clientId, setId, triggerField, nUpdatesPerClient, updateMode, pvCopy, master));
+    return filter;
+}
+
+DataDistributorFilter::DataDistributorFilter(const std::string& groupId_, int clientId_, const std::string& setId_, const std::string& triggerField_, int nUpdatesPerClient, int updateMode, const PVCopyPtr& copyPtr_, const epvd::PVFieldPtr& masterFieldPtr_)
+    : dataDistributorPtr(DataDistributor::getInstance(groupId_))
+    , clientId(clientId_)
+    , setId(setId_)
+    , triggerField(triggerField_)
+    , masterFieldPtr(masterFieldPtr_)
+    , triggerFieldPtr()
+    , firstUpdate(true)
+{
+    triggerField = dataDistributorPtr->addClient(clientId, setId, triggerField, nUpdatesPerClient, updateMode);
+    if(masterFieldPtr->getField()->getType() == epvd::structure) {
+        epvd::PVStructurePtr pvStructurePtr = static_pointer_cast<epvd::PVStructure>(masterFieldPtr);
+        if(pvStructurePtr) {
+            triggerFieldPtr = pvStructurePtr->getSubField(triggerField);
+        }
+    }
+    if(!triggerFieldPtr) {
+        triggerFieldPtr = masterFieldPtr;
+    }
+}
+
+
+bool DataDistributorFilter::filter(const PVFieldPtr& pvCopy, const BitSetPtr& bitSet, bool toCopy)
+{
+    if(!toCopy) {
+        return false;
+    }
+
+    bool proceedWithUpdate = false;
+    if(firstUpdate) {
+        // Always send first update
+        firstUpdate = false;
+        proceedWithUpdate = true;
+    }
+    else {
+        std::stringstream ss;
+        ss << triggerFieldPtr;
+        std::string triggerFieldValue = ss.str();
+        proceedWithUpdate = dataDistributorPtr->updateClient(clientId, setId, triggerFieldValue);
+    }
+
+    if(proceedWithUpdate) {
+        pvCopy->copyUnchecked(*masterFieldPtr);
+        bitSet->set((unsigned int)pvCopy->getFieldOffset());
+    } 
+    else {
+        // Clear all bits
+        //bitSet->clear(pvCopy->getFieldOffset());
+        bitSet->clear();
+    }
+
+    return true;
+}
+
+string DataDistributorFilter::getName()
+{
+    return name;
+}
+
+}}

src/copy/pvCopy.cpp

@@ -88,7 +88,6 @@ PVCopyPtr PVCopy::create(
     bool result = pvCopy->init(pvStructure);
     if(!result) return PVCopyPtr();
     pvCopy->traverseMasterInitPlugin();
-//cout << pvCopy->dump() << endl;
     return pvCopy;
 }
 
@@ -428,20 +427,28 @@ PVCopy::PVCopy(
 {
 }
 
-void PVCopy::destroy()
-{
-    headNode.reset();
-}
-
 bool PVCopy::init(epics::pvData::PVStructurePtr const &pvRequest)
 {
     PVStructurePtr pvMasterStructure = pvMaster;
     size_t len = pvRequest->getPVFields().size();
     bool entireMaster = false;
-    if(len==0) entireMaster = true;
+    requestHasMasterField = false;
     PVStructurePtr pvOptions;
-    if(len==1) {
-        pvOptions = pvRequest->getSubField<PVStructure>("_options");
+    if(len==0) {
+        entireMaster = true;
+    }
+    else {
+        // If "_" is in the request, but not in the master structure,
+        // then assume the top level PV structure is requested
+        PVStructurePtr masterFieldPtr = pvMaster->getSubField<PVStructure>("_");
+        PVStructurePtr requestFieldPtr = pvRequest->getSubField<PVStructure>("_");
+        if (requestFieldPtr) {
+            requestHasMasterField = true;
+        }
+        if (!masterFieldPtr && requestFieldPtr) {
+            entireMaster = true;
+            pvOptions = requestFieldPtr->getSubField<PVStructure>("_options");
+        }
     }
     if(entireMaster) {
         structure = pvMasterStructure->getStructure();

src/database/pvDatabase.cpp

@@ -23,6 +23,7 @@
 #include "pv/pvArrayPlugin.h"
 #include "pv/pvTimestampPlugin.h"
 #include "pv/pvDeadbandPlugin.h"
+#include "pv/dataDistributorPlugin.h"
 
 using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
@@ -44,6 +45,7 @@ PVDatabasePtr PVDatabase::getMaster()
         PVArrayPlugin::create();
         PVTimestampPlugin::create();
         PVDeadbandPlugin::create();
+        DataDistributorPlugin::create();
     }
     return pvDatabaseMaster;
 }

src/database/pvRecord.cpp

@@ -37,9 +37,11 @@ namespace epics { namespace pvDatabase {
 
 PVRecordPtr PVRecord::create(
     string const &recordName,
-    PVStructurePtr const & pvStructure)
+    PVStructurePtr const & pvStructure,
+    int asLevel,
+    const std::string& asGroup)
 {
-    PVRecordPtr pvRecord(new PVRecord(recordName,pvStructure));
+    PVRecordPtr pvRecord(new PVRecord(recordName,pvStructure,asLevel,asGroup));
     if(!pvRecord->init()) {
         pvRecord.reset();
     }
@@ -49,12 +51,16 @@ PVRecordPtr PVRecord::create(
 
 PVRecord::PVRecord(
     string const & recordName,
-    PVStructurePtr const & pvStructure)
+    PVStructurePtr const & pvStructure,
+    int asLevel_,
+    const std::string& asGroup_)
 : recordName(recordName),
   pvStructure(pvStructure),
   depthGroupPut(0),
   traceLevel(0),
-  isAddListener(false)
+  isAddListener(false),
+  asLevel(asLevel_),
+  asGroup(asGroup_)
 {
 }
 
@@ -326,6 +332,7 @@ PVRecordField::PVRecordField(
     PVRecordPtr const & pvRecord)
 :  pvField(pvField),
    isStructure(pvField->getField()->getType()==structure ? true : false),
+   master(),
    parent(parent),
    pvRecord(pvRecord)
 {
@@ -412,11 +419,18 @@ void PVRecordField::postParent(PVRecordFieldPtr const & subField)
         listener->dataPut(pvrs,subField);
     }
     PVRecordStructurePtr parent(this->parent.lock());
-    if(parent) parent->postParent(subField);
+    if(parent) {
+        parent->postParent(subField);
+    }
 }
 
 void PVRecordField::postSubField()
 {
+    // Master field pointer will be set in only one subfield
+    PVRecordStructurePtr master(this->master.lock());
+    if(master) {
+        master->callListener();
+    }
     callListener();
     if(isStructure) {
         PVRecordStructurePtr pvrs =
@@ -459,19 +473,38 @@ void PVRecordStructure::init()
     PVRecordStructurePtr self =
         static_pointer_cast<PVRecordStructure>(shared_from_this());
     PVRecordPtr pvRecord = getPVRecord();
+    static bool masterFieldCallbackSet = false;
+    bool isMasterField = (!getFullFieldName().size());
+    if (isMasterField) {
+        masterFieldCallbackSet = false;
+    }
     for(size_t i=0; i<numFields; i++) {
         PVFieldPtr pvField = pvFields[i];
         if(pvField->getField()->getType()==structure) {
-             PVStructurePtr xxx = static_pointer_cast<PVStructure>(pvField);
-             PVRecordStructurePtr pvRecordStructure(
+            PVStructurePtr xxx = static_pointer_cast<PVStructure>(pvField);
+            PVRecordStructurePtr pvRecordStructure(
                  new PVRecordStructure(xxx,self,pvRecord));
-             pvRecordFields->push_back(pvRecordStructure);
-             pvRecordStructure->init();
+            pvRecordFields->push_back(pvRecordStructure);
+            pvRecordStructure->init();
         } else {
-             PVRecordFieldPtr pvRecordField(
+            PVRecordFieldPtr pvRecordField(
                 new PVRecordField(pvField,self,pvRecord));
-             pvRecordFields->push_back(pvRecordField);
-             pvRecordField->init();
+            pvRecordFields->push_back(pvRecordField);
+            pvRecordField->init();
+            // Master field listeners will be called before
+            // calling listeners for the first subfield
+            if (!masterFieldCallbackSet) {
+                masterFieldCallbackSet = true;
+                // Find master field
+                PVRecordStructurePtr p = pvRecordField->parent.lock();
+                while (p) {
+                    PVRecordStructurePtr p2 = p->parent.lock();
+                    if (!p2) {
+                        pvRecordField->master = p;
+                    }
+                    p = p2;
+                }
+            }
         }
     }
 }

src/pv/addRecord.h

@@ -1,63 +0,0 @@
-/* addRecord.h */
-/**
- * Copyright - See the COPYRIGHT that is included with this distribution.
- * EPICS pvData is distributed subject to a Software License Agreement found
- * in file LICENSE that is included with this distribution.
- */
-/**
- * @author mrk
- * @date 2013.04.18
- */
-#ifndef ADDRECORD_H
-#define ADDRECORD_H
-
-#include <pv/channelProviderLocal.h>
-
-#include <shareLib.h>
-
-namespace epics { namespace pvDatabase {
-
-
-class AddRecord;
-typedef std::tr1::shared_ptr<AddRecord> AddRecordPtr;
-
-/**
- * @brief Add another record in the same database.
- *
- * A record to add another record
- * It is meant to be used via a channelPutGet request.
- * The argument has one field: recordName.
- * The result has a field named status.
- */
-class epicsShareClass AddRecord :
-    public PVRecord
-{
-public:
-    POINTER_DEFINITIONS(AddRecord);
-    /**
-     * Factory methods to create AddRecord.
-     * @param recordName The name for the AddRecord.
-     * @return A shared pointer to AddRecord..
-     */
-    static AddRecordPtr create(
-        std::string const & recordName);
-    /**
-     * standard init method required by PVRecord
-     * @return true unless record name already exists.
-     */
-    virtual bool init();
-    /**
-     * @brief Add the record specified by  recordName.
-     */
-    virtual void process();
-private:
-    AddRecord(
-        std::string const & recordName,
-        epics::pvData::PVStructurePtr const & pvStructure);
-    epics::pvData::PVStringPtr pvRecordName;
-    epics::pvData::PVStringPtr pvResult;
-};
-
-}}
-
-#endif  /* ADDRECORD_H */

src/pv/channelProviderLocal.h

@@ -27,6 +27,7 @@
 #include <pv/pvDatabase.h>
 
 #include <shareLib.h>
+#include <asLib.h>
 
 namespace epics { namespace pvDatabase {
 
@@ -58,6 +59,19 @@ class epicsShareClass ChannelProviderLocal :
 {
 public:
     POINTER_DEFINITIONS(ChannelProviderLocal);
+    /**
+     * @brief Initialize access security configuration
+     * @param filePath AS definition file path 
+     * @param substitutions macro substitutions
+     * @throws std::runtime_error in case of configuration problem 
+     */
+    static void initAs(const std::string& filePath, const std::string& substitutions="");
+    /**
+     * @brief Is access security active?
+     * @return true is AS is active
+     */
+    static bool isAsActive();
+
     /**
      * @brief Constructor
      */
@@ -66,11 +80,6 @@ public:
      * @brief Destructor
      */
     virtual ~ChannelProviderLocal();
-    /**
-     * @brief DEPRECATED
-     *
-     */
-    virtual void destroy(){};
     /**
      * @brief Returns the channel provider name.
      *
@@ -163,6 +172,7 @@ private:
     friend class ChannelProviderLocalRun;
 };
 
+
 /**
  * @brief Channel for accessing a PVRecord.
  *
@@ -190,11 +200,6 @@ public:
      * @brief Destructor
      */
     virtual ~ChannelLocal();
-    /**
-     * @brief DEPRECATED
-     *
-     */
-    virtual void destroy() {};
     /**
      * @brief Detach from the record.
      *
@@ -351,6 +356,18 @@ public:
      * @param out the stream on which the message is displayed.
      */
     virtual void printInfo(std::ostream& out);
+    /**
+     * @brief determines if client can write
+     *
+     * @return true if client can write
+     */
+    virtual bool canWrite();
+    /**
+     * @brief determines if client can read
+     *
+     * @return true if client can read
+     */
+    virtual bool canRead();
 protected:
     shared_pointer getPtrSelf()
     {
@@ -361,6 +378,19 @@ private:
     ChannelProviderLocalWPtr provider;
     PVRecordWPtr pvRecord;
     epics::pvData::Mutex mutex;
+
+    // AS-specific variables/methods
+    std::vector<char> toCharArray(const std::string& s);
+    std::vector<char> getAsGroup(const PVRecordPtr& pvRecord);
+    std::vector<char> getAsUser(const epics::pvAccess::ChannelRequester::shared_pointer& requester);
+    std::vector<char> getAsHost(const epics::pvAccess::ChannelRequester::shared_pointer& requester);
+
+    int asLevel;
+    std::vector<char> asGroup;
+    std::vector<char> asUser;
+    std::vector<char> asHost;
+    ASMEMBERPVT asMemberPvt;
+    ASCLIENTPVT asClientPvt;
 };
 
 }}

src/pv/dataDistributorPlugin.h

@@ -0,0 +1,167 @@
+// Copyright information and license terms for this software can be
+// found in the file LICENSE that is included with the distribution
+
+#ifndef DATA_DISTRIBUTOR_PLUGIN_H
+#define DATA_DISTRIBUTOR_PLUGIN_H
+
+// The data distributor plugin enables distribution of channel data between
+// multiple client applications.
+
+#include <string>
+#include <map>
+#include <list>
+#include <pv/lock.h>
+#include <pv/pvData.h>
+#include <pv/pvPlugin.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvCopy {
+
+class DataDistributorPlugin;
+class DataDistributorFilter;
+class DataDistributor;
+
+typedef std::tr1::shared_ptr<DataDistributorPlugin> DataDistributorPluginPtr;
+typedef std::tr1::shared_ptr<DataDistributorFilter> DataDistributorFilterPtr;
+typedef std::tr1::shared_ptr<DataDistributor> DataDistributorPtr;
+
+struct ClientSet;
+typedef std::tr1::shared_ptr<ClientSet> ClientSetPtr;
+typedef std::tr1::shared_ptr<const ClientSet> ClientSetConstPtr;
+
+struct ClientSet
+{
+    POINTER_DEFINITIONS(ClientSet);
+
+    ClientSet(const std::string& setId_, const std::string triggerField_, int nUpdatesPerClient_, int updateMode_) 
+        : setId(setId_)
+        , triggerField(triggerField_)
+        , nUpdatesPerClient(nUpdatesPerClient_)
+        , updateMode(updateMode_)
+        , clientIdList()
+        , lastUpdateValue()
+        , updateCounter(0)
+        , currentClientIdIter(clientIdList.end())
+        {}
+    ~ClientSet() {}
+    std::string setId;
+    std::string triggerField;
+    int nUpdatesPerClient;
+    int updateMode;
+    std::list<int> clientIdList;
+    std::string lastUpdateValue;
+    int updateCounter;
+    std::list<int>::iterator currentClientIdIter;
+};
+
+class DataDistributor 
+{
+public:
+    enum ClientUpdateMode {
+        DD_UPDATE_ONE_PER_GROUP = 0, // Update goes to one client per set
+        DD_UPDATE_ALL_IN_GROUP = 1,  // Update goes to all clients in set
+        DD_N_UPDATE_MODES = 2        // Number of valid update modes
+    };
+
+    static DataDistributorPtr getInstance(const std::string& groupId);
+    static void removeUnusedInstance(DataDistributorPtr dataDistributorPtr);
+
+    virtual ~DataDistributor();
+    std::string getGroupId() const { return groupId; }
+    std::string addClient(int clientId, const std::string& setId, const std::string& triggerField, int nUpdatesPerClient, int updateMode);
+    void removeClient(int clientId, const std::string& setId);
+    bool updateClient(int clientId, const std::string& setId, const std::string& triggerFieldValue);
+
+private:
+    DataDistributor(const std::string& id);
+    DataDistributor(const DataDistributor& distributor);
+    DataDistributor& operator=(const DataDistributor& distributor);
+
+    static std::map<std::string, DataDistributorPtr> dataDistributorMap;
+    static epics::pvData::Mutex dataDistributorMapMutex;
+
+    std::string groupId;
+    epics::pvData::Mutex mutex;
+    std::map<std::string, ClientSetPtr> clientSetMap;
+    std::list<std::string> clientSetIdList;
+    std::list<std::string>::iterator currentSetIdIter;
+    std::string lastUpdateValue;
+};
+
+class epicsShareClass DataDistributorPlugin : public PVPlugin
+{
+private:
+    DataDistributorPlugin();
+public:
+    POINTER_DEFINITIONS(DataDistributorPlugin);
+    virtual ~DataDistributorPlugin();
+    /**
+     * Factory
+     */
+    static void create();
+    /**
+     * Create a PVFilter.
+     * @param requestValue The value part of a name=value request option.
+     * @param pvCopy The PVCopy to which the PVFilter will be attached.
+     * @param master The field in the master PVStructure to which the PVFilter will be attached
+     * @return The PVFilter.
+     * Null is returned if master or requestValue is not appropriate for the plugin.
+     */
+    virtual PVFilterPtr create(
+         const std::string& requestValue,
+         const PVCopyPtr& pvCopy,
+         const epics::pvData::PVFieldPtr& master);
+private:
+    static bool initialize();
+    static bool initialized;
+};
+
+/**
+ * @brief  A Plugin for a filter that gets a sub array from a PVScalarDeadband.
+ */
+class epicsShareClass DataDistributorFilter : public PVFilter
+{
+private:
+    DataDistributorPtr dataDistributorPtr;
+    int clientId;
+    std::string setId;
+    std::string triggerField;
+    epics::pvData::PVFieldPtr masterFieldPtr;
+    epics::pvData::PVFieldPtr triggerFieldPtr;
+    bool firstUpdate;
+
+    DataDistributorFilter(const std::string& groupId, int clientId, const std::string& setId, const std::string& triggerField, int nUpdatesPerClient, int updateMode, const epics::pvCopy::PVCopyPtr& copyPtr, const epics::pvData::PVFieldPtr& masterFieldPtr);
+
+public:
+    POINTER_DEFINITIONS(DataDistributorFilter);
+    virtual ~DataDistributorFilter();
+    /**
+     * Create a DataDistributorFilter.
+     * @param requestValue The value part of a name=value request option.
+     * @param master The field in the master PVStructure to which the PVFilter will be attached.
+     * @return The PVFilter.
+     * A null is returned if master or requestValue is not appropriate for the plugin.
+     */
+    static DataDistributorFilterPtr create(
+        const std::string& requestValue,
+        const PVCopyPtr& pvCopy,
+        const epics::pvData::PVFieldPtr & master);
+    /**
+     * Perform a filter operation
+     * @param pvCopy The field in the copy PVStructure.
+     * @param bitSet A bitSet for copyPVStructure.
+     * @param toCopy (true,false) means copy (from master to copy,from copy to master)
+     * @return if filter (modified, did not modify) destination.
+     * Null is returned if master or requestValue is not appropriate for the plugin.
+     */
+    bool filter(const epics::pvData::PVFieldPtr & pvCopy,const epics::pvData::BitSetPtr & bitSet,bool toCopy);
+    /**
+     * Get the filter name.
+     * @return The name.
+     */
+    std::string getName();
+};
+
+}}
+#endif  

src/pv/processRecord.h

@@ -1,89 +0,0 @@
-/* processRecord.h */
-/**
- * Copyright - See the COPYRIGHT that is included with this distribution.
- * EPICS pvData is distributed subject to a Software License Agreement found
- * in file LICENSE that is included with this distribution.
- */
-/**
- * @author mrk
- * @date 2019.06.07
- */
-#ifndef PROCESSRECORD_H
-#define PROCESSRECORD_H
-
-#include <map>
-#include <epicsThread.h>
-#include <pv/event.h>
-#include <pv/channelProviderLocal.h>
-
-#include <shareLib.h>
-
-namespace epics { namespace pvDatabase {
-
-typedef std::tr1::shared_ptr<epicsThread> EpicsThreadPtr;
-
-class ProcessRecord;
-typedef std::tr1::shared_ptr<ProcessRecord> ProcessRecordPtr;
-
-/**
- * @brief Process another record in the same database.
- *
- * A record to process another record
- * It is meant to be used via a channelPutGet request.
- * The argument has one field: recordName.
- * The result has a field named status.
- */
-class epicsShareClass ProcessRecord :
-    public PVRecord,
-    public epicsThreadRunable
-{
-public:
-    POINTER_DEFINITIONS(ProcessRecord);
-    /**
-     * Factory methods to create ProcessRecord.
-     * @param recordName The name for the ProcessRecord.
-     * @param delay Delay time to wait between process requests.
-     * @return A shared pointer to ProcessRecord.
-     */
-    static ProcessRecordPtr create(
-        std::string const & recordName,double delay);
-    /**
-     * standard init method required by PVRecord
-     * @return true unless record name already exists.
-     */
-    virtual bool init();
-    /**
-     * @brief Process the record specified by  recordName.
-     */
-    virtual void process();
-    /**
-     * @brief The run method for the thread.
-     */
-    virtual void run();
-    /**
-     * @brief Start the thread
-     */
-    void startThread();
-    /**
-     * @brief Stop the thread
-     */
-    void stop();
-private:
-    ProcessRecord(
-        std::string const & recordName,
-        epics::pvData::PVStructurePtr const & pvStructure,double delay);
-    double delay;
-    EpicsThreadPtr thread;
-    epics::pvData::Event runStop;
-    epics::pvData::Event runReturn;
-    PVDatabasePtr pvDatabase;
-    PVRecordMap pvRecordMap;
-    epics::pvData::PVStringPtr pvCommand;
-    epics::pvData::PVStringPtr pvRecordName;
-    epics::pvData::PVStringPtr pvResult;
-    epics::pvData::Mutex mutex;
-};
-
-}}
-
-#endif  /* PROCESSRECORD_H */

src/pv/pvDatabase.h

@@ -59,6 +59,7 @@ class epicsShareClass PVRecord :
 {
 public:
     POINTER_DEFINITIONS(PVRecord);
+    
     /**
      * The Destructor.
      */
@@ -86,10 +87,6 @@ public:
      *  the base class sets the timeStamp to the current time.
      */
     virtual void process();
-    /**
-     *  @brief DEPRECATED
-     */
-    virtual void destroy() {}
     /**
      *  @brief remove record from database.
      *
@@ -116,11 +113,14 @@ public:
      *
      * @param recordName The name of the record, which is also the channelName.
      * @param pvStructure The top level structure.
+     * @param asLevel AS level (default: ASL0)
+     * @param asGroup AS group (default: DEFAULT)
      * @return A shared pointer to the newly created record.
      */
     static PVRecordPtr create(
         std::string const & recordName,
-        epics::pvData::PVStructurePtr const & pvStructure);
+        epics::pvData::PVStructurePtr const & pvStructure,
+        int asLevel = 0, const std::string& asGroup = "DEFAULT");
     /**
      * @brief  Get the name of the record.
      *
@@ -236,15 +236,40 @@ public:
      * @param level The level
      */
     void setTraceLevel(int level) {traceLevel = level;}
+    /**
+     * @brief Get the ASlevel 
+     *
+     * @return The level.
+     */
+    int getAsLevel() const {return asLevel;}
+    /**
+     * @brief Get the AS group name 
+     *
+     * @return The name.
+     */
+    std::string getAsGroup() const {return asGroup;}
+    /**
+     * @brief set access security level.
+     * @param level The level
+     */
+    void setAsLevel(int level) {asLevel=level;}
+    /**
+     * @brief set access security group
+     * @param group The group name
+     */
+    void setAsGroup(const std::string& group) {asGroup = group;}
 protected:
     /**
      * @brief Constructor
      * @param recordName The name of the record
      * @param pvStructure The top level PVStructutre
+     * @param asLevel AS level (default: ASL0)
+     * @param asGroup AS group (default: DEFAULT)
      */
     PVRecord(
         std::string const & recordName,
-        epics::pvData::PVStructurePtr const & pvStructure);
+        epics::pvData::PVStructurePtr const & pvStructure,
+        int asLevel = 0, const std::string& asGroup = "DEFAULT");
     /**
      * @brief Initializes the base class.
      *
@@ -273,6 +298,9 @@ private:
 
     epics::pvData::PVTimeStamp pvTimeStamp;
     epics::pvData::TimeStamp timeStamp;
+
+    int asLevel;
+    std::string asGroup;
 };
 
 epicsShareFunc std::ostream& operator<<(std::ostream& o, const PVRecord& record);
@@ -348,6 +376,7 @@ private:
     std::list<PVListenerWPtr> pvListenerList;
     epics::pvData::PVField::weak_pointer pvField;
     bool isStructure;
+    PVRecordStructureWPtr master;
     PVRecordStructureWPtr parent;
     PVRecordWPtr pvRecord;
     std::string fullName;

src/pv/pvStructureCopy.h

@@ -79,7 +79,6 @@ public:
         epics::pvData::PVStructurePtr const &pvRequest,
         std::string const & structureName);
     virtual ~PVCopy(){}
-    virtual void destroy();
     /**
      * Get the top-level structure of master
      * @returns The master top-level structure.
@@ -168,6 +167,10 @@ public:
      *  name is the subField name and value is the subField value.
      */
     epics::pvData::PVStructurePtr getOptions(std::size_t fieldOffset);
+    /**
+     * Is master field requested?
+     */
+    bool isMasterFieldRequested() const {return requestHasMasterField;}
     /**
      * For debugging.
      */
@@ -184,6 +187,7 @@ private:
     CopyNodePtr headNode;
     epics::pvData::PVStructurePtr cacheInitStructure;
     epics::pvData::BitSetPtr ignorechangeBitSet;
+    bool requestHasMasterField;
 
     void traverseMaster(
         CopyNodePtr const &node,

src/pv/pvdbcrAddRecord.h

@@ -0,0 +1,67 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * EPICS pvData is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+/**
+ * @author mrk
+ * @date 2021.04.11
+ */
+#ifndef PVDBCRADDARRAY_H
+#define PVDBCRADDARRAY_H
+
+#include <pv/pvDatabase.h>
+#include <pv/pvSupport.h>
+#include <pv/pvStructureCopy.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvDatabase {
+
+class PvdbcrAddRecord;
+typedef std::tr1::shared_ptr<PvdbcrAddRecord> PvdbcrAddRecordPtr;
+
+/**
+ * @brief  PvdbcrAddRecord A record that adds a record to the master database.
+ *
+ */
+class epicsShareClass PvdbcrAddRecord :
+     public PVRecord
+{
+private:
+  PvdbcrAddRecord(
+    std::string const & recordName,epics::pvData::PVStructurePtr const & pvStructure,
+    int asLevel,std::string const & asGroup);
+    epics::pvData::PVStringPtr pvRecordName;
+    epics::pvData::PVStringPtr pvResult;
+public:
+    POINTER_DEFINITIONS(PvdbcrAddRecord);
+    /**
+     * The Destructor.
+     */
+    virtual ~PvdbcrAddRecord() {}
+    /**
+     * @brief Create a record.
+     *
+     * @param recordName The record name.
+     * @param asLevel  The access security level.
+     * @param asGroup  The access security group.
+     * @return The PVRecord
+     */
+     static PvdbcrAddRecordPtr create(
+        std::string const & recordName,
+        int asLevel=0,std::string const & asGroup = std::string("DEFAULT"));
+    /**
+     *  @brief a PVRecord method
+     * @return success or failure
+     */
+    virtual bool init();
+    /**
+     *  @brief process method that adds a record to the master database.
+     */
+    virtual void process();
+};
+
+}}
+
+#endif  /* PVDBCRADDARRAY_H */

src/pv/pvdbcrProcessRecord.h

@@ -0,0 +1,105 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * EPICS pvData is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+/**
+ * @author mrk
+ * @date 2021.04.11
+ */
+#ifndef PVDBCRPROCESSARRAY_H
+#define PVDBCRPROCESSARRAY_H
+#include <epicsThread.h>
+#include <epicsGuard.h>
+#include <pv/event.h>
+#include <pv/pvDatabase.h>
+#include <pv/pvSupport.h>
+#include <pv/pvStructureCopy.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvDatabase {
+
+typedef std::tr1::shared_ptr<epicsThread> EpicsThreadPtr;
+class PvdbcrProcessRecord;
+typedef std::tr1::shared_ptr<PvdbcrProcessRecord> PvdbcrProcessRecordPtr;
+
+/**
+ * @brief  PvdbcrProcessRecord A record that processes other records in the master database.
+ *
+ */
+class epicsShareClass PvdbcrProcessRecord :
+     public PVRecord,
+     public epicsThreadRunable
+{
+private:
+    PvdbcrProcessRecord(
+        std::string const & recordName,epics::pvData::PVStructurePtr const & pvStructure,
+        double delay,
+        int asLevel,std::string const & asGroup);
+    double delay;
+    EpicsThreadPtr thread;
+    epics::pvData::Event runStop;
+    epics::pvData::Event runReturn;
+    PVDatabasePtr pvDatabase;
+    PVRecordMap pvRecordMap;
+    epics::pvData::PVStringPtr pvCommand;
+    epics::pvData::PVStringPtr pvRecordName;
+    epics::pvData::PVStringPtr pvResult;
+    epics::pvData::Mutex mutex;
+public:
+    POINTER_DEFINITIONS(PvdbcrProcessRecord);
+    /**
+     * The Destructor.
+     */
+    virtual ~PvdbcrProcessRecord() {}
+    /**
+     * @brief Create a record.
+     *
+     * @param recordName The record name.
+     * @param asLevel  The access security level.
+     * @param asGroup  The access security group.
+     * @return The PVRecord
+     */
+     static PvdbcrProcessRecordPtr create(
+        std::string const & recordName,
+        double delay= 1.0,
+        int asLevel=0,std::string const & asGroup = std::string("DEFAULT"));
+    /**
+     * @brief set the delay between prcocessing.
+     *
+     * @param delay in seconds
+     */    
+    void setDelay(double delay);
+     /**
+     * @brief get the delay between prcocessing.
+     *
+     * @return delay in seconds
+     */    
+    double getDelay();    
+    /**
+     *  @brief a PVRecord method
+     * @return success or failure
+     */
+    virtual bool init();
+    /**
+     *  @brief method that processes other records in the master database.
+     */
+    virtual void process();
+    /**
+     *  @brief thread method
+     */
+    virtual void run();
+    /**
+     *  @brief thread method
+     */
+    void startThread();
+    /**
+     *  @brief thread method
+     */
+    void stop();
+};
+
+}}
+
+#endif  /* PVDBCRPROCESSARRAY_H */

src/pv/pvdbcrRemoveRecord.h

@@ -0,0 +1,67 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * EPICS pvData is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+/**
+ * @author mrk
+ * @date 2021.04.11
+ */
+#ifndef PVDBCRREMOVEARRAY_H
+#define PVDBCRREMOVEARRAY_H
+
+#include <pv/pvDatabase.h>
+#include <pv/pvSupport.h>
+#include <pv/pvStructureCopy.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvDatabase {
+
+class PvdbcrRemoveRecord;
+typedef std::tr1::shared_ptr<PvdbcrRemoveRecord> PvdbcrRemoveRecordPtr;
+
+/**
+ * @brief  PvdbcrRemoveRecord A record that removes a record from the master database.
+ *
+ */
+class epicsShareClass PvdbcrRemoveRecord :
+     public PVRecord
+{
+private:
+  PvdbcrRemoveRecord(
+    std::string const & recordName,epics::pvData::PVStructurePtr const & pvStructure,
+    int asLevel,std::string const & asGroup);
+    epics::pvData::PVStringPtr pvRecordName;
+    epics::pvData::PVStringPtr pvResult;
+public:
+    POINTER_DEFINITIONS(PvdbcrRemoveRecord);
+    /**
+     * The Destructor.
+     */
+    virtual ~PvdbcrRemoveRecord() {}
+    /**
+     * @brief Create a record.
+     *
+     * @param recordName The record name.
+     * @param asLevel  The access security level.
+     * @param asGroup  The access security group.
+     * @return The PVRecord
+     */
+     static PvdbcrRemoveRecordPtr create(
+        std::string const & recordName,
+        int asLevel=0,std::string const & asGroup = std::string("DEFAULT"));
+    /**
+     *  @brief a PVRecord method
+     * @return success or failure
+     */
+    virtual bool init();
+    /**
+     *  @brief process method that removes a record from the master database.
+     */
+    virtual void process();
+};
+
+}}
+
+#endif  /* PVDBCRREMOVEARRAY_H */

src/pv/pvdbcrScalarArrayRecord.h

@@ -0,0 +1,57 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * EPICS pvData is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+/**
+ * @author mrk
+ * @date 2021.04.11
+ */
+#ifndef PVDBCRSCALARARRAYRECORD_H
+#define PVDBCRSCALARARRAYRECORD_H
+
+#include <pv/pvDatabase.h>
+#include <pv/pvSupport.h>
+#include <pv/pvStructureCopy.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvDatabase {
+
+class PvdbcrScalarArrayRecord;
+typedef std::tr1::shared_ptr<PvdbcrScalarArrayRecord> PvdbcrScalarArrayRecordPtr;
+
+/**
+ * @brief  PvdbcrScalarArrayRecord creates a record with a scalar array value, alarm, and timeStamp.
+ *
+ */
+class epicsShareClass PvdbcrScalarArrayRecord :
+     public PVRecord
+{
+private:
+  PvdbcrScalarArrayRecord(
+    std::string const & recordName,epics::pvData::PVStructurePtr const & pvStructure,
+    int asLevel,std::string const & asGroup);
+public:
+    POINTER_DEFINITIONS(PvdbcrScalarArrayRecord);
+    /**
+     * The Destructor.
+     */
+    virtual ~PvdbcrScalarArrayRecord() {}
+    /**
+     * @brief Create a record.
+     *
+     * @param recordName The record name.
+     * @param scalarType The type for the value field
+     * @param asLevel  The access security level.
+     * @param asGroup  The access security group.
+     * @return The PVRecord
+     */
+     static PvdbcrScalarArrayRecordPtr create(
+        std::string const & recordName,std::string const &  scalarType,
+        int asLevel=0,std::string const & asGroup = std::string("DEFAULT"));
+};
+
+}}
+
+#endif  /* PVDBCRSCALARARRAYRECORD_H */

src/pv/pvdbcrScalarRecord.h

@@ -0,0 +1,57 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * EPICS pvData is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+/**
+ * @author mrk
+ * @date 2021.04.11
+ */
+#ifndef PVDBCRSCALARRECORD_H
+#define PVDBCRSCALARRECORD_H
+
+#include <pv/pvDatabase.h>
+#include <pv/pvSupport.h>
+#include <pv/pvStructureCopy.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvDatabase {
+
+class PvdbcrScalarRecord;
+typedef std::tr1::shared_ptr<PvdbcrScalarRecord> PvdbcrScalarRecordPtr;
+
+/**
+ * @brief  PvdbcrScalarRecord creates a record with a scalar value, alarm, and timeStamp.
+ *
+ */
+class epicsShareClass PvdbcrScalarRecord :
+     public PVRecord
+{
+private:
+  PvdbcrScalarRecord(
+    std::string const & recordName,epics::pvData::PVStructurePtr const & pvStructure,
+    int asLevel,std::string const & asGroup);
+public:
+    POINTER_DEFINITIONS(PvdbcrScalarRecord);
+    /**
+     * The Destructor.
+     */
+    virtual ~PvdbcrScalarRecord() {}
+    /**
+     * @brief Create a record.
+     *
+     * @param recordName The record name.
+     * @param scalarType The type for the value field
+     * @param asLevel  The access security level.
+     * @param asGroup  The access security group.
+     * @return The PVRecord
+     */
+     static PvdbcrScalarRecordPtr create(
+        std::string const & recordName,std::string const &  scalarType,
+        int asLevel=0,std::string const & asGroup = std::string("DEFAULT"));
+};
+
+}}
+
+#endif  /* PVDBCRSCALARRECORD_H */

src/pv/pvdbcrTraceRecord.h

@@ -0,0 +1,68 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * EPICS pvData is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+/**
+ * @author mrk
+ * @date 2021.04.11
+ */
+#ifndef PVDBCRTRACEARRAY_H
+#define PVDBCRTRACEARRAY_H
+
+#include <pv/pvDatabase.h>
+#include <pv/pvSupport.h>
+#include <pv/pvStructureCopy.h>
+
+#include <shareLib.h>
+
+namespace epics { namespace pvDatabase {
+
+class PvdbcrTraceRecord;
+typedef std::tr1::shared_ptr<PvdbcrTraceRecord> PvdbcrTraceRecordPtr;
+
+/**
+ * @brief  PvdbcrTraceRecord A record sets trace level for a record in the master database.
+ *
+ */
+class epicsShareClass PvdbcrTraceRecord :
+     public PVRecord
+{
+private:
+  PvdbcrTraceRecord(
+    std::string const & recordName,epics::pvData::PVStructurePtr const & pvStructure,
+    int asLevel,std::string const & asGroup);
+    epics::pvData::PVStringPtr pvRecordName;
+    epics::pvData::PVIntPtr pvLevel;
+    epics::pvData::PVStringPtr pvResult;
+public:
+    POINTER_DEFINITIONS(PvdbcrTraceRecord);
+    /**
+     * The Destructor.
+     */
+    virtual ~PvdbcrTraceRecord() {}
+    /**
+     * @brief Create a record.
+     *
+     * @param recordName The record name.
+     * @param asLevel  The access security level.
+     * @param asGroup  The access security group.
+     * @return The PVRecord
+     */
+     static PvdbcrTraceRecordPtr create(
+        std::string const & recordName,
+        int asLevel=0,std::string const & asGroup = std::string("DEFAULT"));
+    /**
+     *  @brief a PVRecord method
+     * @return success or failure
+     */
+    virtual bool init();
+    /**
+     *  @brief process method that sets trace level for a record in the master database.
+     */
+    virtual void process();
+};
+
+}}
+
+#endif  /* PVDBCRTRACEARRAY_H */

src/pv/removeRecord.h

@@ -1,63 +0,0 @@
-/* removeRecord.h */
-/**
- * Copyright - See the COPYRIGHT that is included with this distribution.
- * EPICS pvData is distributed subject to a Software License Agreement found
- * in file LICENSE that is included with this distribution.
- */
-/**
- * @author mrk
- * @date 2013.04.18
- */
-#ifndef REMOVERECORD_H
-#define REMOVERECORD_H
-
-#include <pv/channelProviderLocal.h>
-
-#include <shareLib.h>
-
-namespace epics { namespace pvDatabase {
-
-
-class RemoveRecord;
-typedef std::tr1::shared_ptr<RemoveRecord> RemoveRecordPtr;
-
-/**
- * @brief Remove another record in the same database.
- *
- * A record to remove another record
- * It is meant to be used via a channelPutGet request.
- * The argument has one field: recordName.
- * The result has a field named status.
- */
-class epicsShareClass RemoveRecord :
-    public PVRecord
-{
-public:
-    POINTER_DEFINITIONS(RemoveRecord);
-    /**
-     * Factory methods to create RemoveRecord.
-     * @param recordName The name for the RemoveRecord.
-     * @return A shared pointer to RemoveRecord..
-     */
-    static RemoveRecordPtr create(
-        std::string const & recordName);
-    /**
-     * standard init method required by PVRecord
-     * @return true unless record name already exists.
-     */
-    virtual bool init();
-    /**
-     * @brief Remove the record specified by  recordName.
-     */
-    virtual void process();
-private:
-    RemoveRecord(
-        std::string const & recordName,
-        epics::pvData::PVStructurePtr const & pvStructure);
-    epics::pvData::PVStringPtr pvRecordName;
-    epics::pvData::PVStringPtr pvResult;
-};
-
-}}
-
-#endif  /* REMOVERECORD_H */

src/pv/traceRecord.h

@@ -1,66 +0,0 @@
-/* traceRecord.h */
-/**
- * Copyright - See the COPYRIGHT that is included with this distribution.
- * EPICS pvData is distributed subject to a Software License Agreement found
- * in file LICENSE that is included with this distribution.
- */
-/**
- * @author mrk
- * @date 2013.04.18
- */
-#ifndef TRACERECORD_H
-#define TRACERECORD_H
-
-#include <pv/channelProviderLocal.h>
-
-#include <shareLib.h>
-
-
-namespace epics { namespace pvDatabase {
-
-
-class TraceRecord;
-typedef std::tr1::shared_ptr<TraceRecord> TraceRecordPtr;
-
-/**
- * @brief Trace activity of  PVRecord.
- *
- * A record to set the trace value for another record
- * It is meant to be used via a channelPutGet request.
- * The argument has two fields: recordName and  level.
- * The result has a field named status.
- */
-class epicsShareClass TraceRecord :
-    public PVRecord
-{
-public:
-    POINTER_DEFINITIONS(TraceRecord);
-    /**
-     * @brief Factory method to create TraceRecord.
-     *
-     * @param recordName The name for the TraceRecord.
-     * @return A shared pointer to TraceRecord..
-     */
-    static TraceRecordPtr create(
-        std::string const & recordName);
-    /**
-     * standard init method required by PVRecord
-     * @return true unless record name already exists.
-     */
-    virtual bool init();
-    /**
-     * @brief Set the trace level for record specified by  recordName.
-     */
-    virtual void process();
-private:
-    TraceRecord(
-        std::string const & recordName,
-        epics::pvData::PVStructurePtr const & pvStructure);
-    epics::pvData::PVStringPtr pvRecordName;
-    epics::pvData::PVIntPtr pvLevel;
-    epics::pvData::PVStringPtr pvResult;
-};
-
-}}
-
-#endif  /* TRACERECORD_H */

src/pvAccess/channelLocal.cpp

@@ -10,7 +10,9 @@
  */
 
 #include <sstream>
+#include <vector>
 
+#include <asLib.h>
 #include <epicsGuard.h>
 #include <epicsThread.h>
 #include <pv/pvData.h>
@@ -23,6 +25,7 @@
 #include <pv/pvaVersionNum.h>
 #include <pv/serverContext.h>
 #include <pv/pvSubArrayCopy.h>
+#include <pv/security.h>
 
 #define epicsExportSharedSymbols
 #include "pv/pvStructureCopy.h"
@@ -74,13 +77,12 @@ static bool getProcess(PVStructurePtr pvRequest,bool processDefault)
 }
 
 class ChannelProcessLocal :
-    public ChannelProcess,
+    public epics::pvAccess::ChannelProcess,
     public std::tr1::enable_shared_from_this<ChannelProcessLocal>
 {
 public:
     POINTER_DEFINITIONS(ChannelProcessLocal);
     virtual ~ChannelProcessLocal();
-    virtual void destroy() {} // DEPRECATED
     static ChannelProcessLocalPtr create(
         ChannelLocalPtr const &channelLocal,
         ChannelProcessRequester::shared_pointer const & channelProcessRequester,
@@ -204,13 +206,12 @@ void ChannelProcessLocal::process()
 }
 
 class ChannelGetLocal :
-    public ChannelGet,
+    public epics::pvAccess::ChannelGet,
     public std::tr1::enable_shared_from_this<ChannelGetLocal>
 {
 public:
     POINTER_DEFINITIONS(ChannelGetLocal);
     virtual ~ChannelGetLocal();
-    virtual void destroy() {} // DEPRECATED
     static ChannelGetLocalPtr create(
         ChannelLocalPtr const &channelLocal,
         ChannelGetRequester::shared_pointer const & channelGetRequester,
@@ -328,6 +329,13 @@ void ChannelGetLocal::get()
 {
     ChannelGetRequester::shared_pointer requester = channelGetRequester.lock();
     if(!requester) return;
+    ChannelLocalPtr channel(channelLocal.lock());
+    if(!channel) throw std::logic_error("channel is deleted");
+    if(!channel->canRead()) {
+        Status status = Status::error("ChannelGet::get is not allowed");
+        requester->getDone(status,getPtrSelf(),PVStructurePtr(),BitSetPtr());
+        return;
+    }
     PVRecordPtr pvr(pvRecord.lock());
     if(!pvr) throw std::logic_error("pvRecord is deleted");
     try {
@@ -375,13 +383,12 @@ void ChannelGetLocal::get()
 }
 
 class ChannelPutLocal :
-    public ChannelPut,
+    public epics::pvAccess::ChannelPut,
     public std::tr1::enable_shared_from_this<ChannelPutLocal>
 {
 public:
     POINTER_DEFINITIONS(ChannelPutLocal);
     virtual ~ChannelPutLocal();
-    virtual void destroy() {} // DEPRECATED
     static ChannelPutLocalPtr create(
         ChannelLocalPtr const &channelLocal,
         ChannelPutRequester::shared_pointer const & channelPutRequester,
@@ -490,6 +497,13 @@ void ChannelPutLocal::get()
 {
     ChannelPutRequester::shared_pointer requester = channelPutRequester.lock();
     if(!requester) return;
+    ChannelLocalPtr channel(channelLocal.lock());
+    if(!channel) throw std::logic_error("channel is deleted");
+    if(!channel->canRead()) {
+        Status status = Status::error("ChannelPut::get is not allowed");
+        requester->getDone(status,getPtrSelf(),PVStructurePtr(),BitSetPtr());
+        return;
+    }
     PVRecordPtr pvr(pvRecord.lock());
     if(!pvr) throw std::logic_error("pvRecord is deleted");
     try {
@@ -520,6 +534,14 @@ void ChannelPutLocal::put(
 {
     ChannelPutRequester::shared_pointer requester = channelPutRequester.lock();
     if(!requester) return;
+    ChannelLocalPtr channel(channelLocal.lock());
+    if(!channel) throw std::logic_error("channel is deleted");
+    if(!channel->canWrite()) {
+        Status status = Status::error("ChannelPut::put is not allowed");
+        requester->putDone(status,getPtrSelf());
+        return;
+    }
+
     PVRecordPtr pvr(pvRecord.lock());
     if(!pvr) throw std::logic_error("pvRecord is deleted");
     try {
@@ -545,13 +567,12 @@ void ChannelPutLocal::put(
 
 
 class ChannelPutGetLocal :
-    public ChannelPutGet,
+    public epics::pvAccess::ChannelPutGet,
     public std::tr1::enable_shared_from_this<ChannelPutGetLocal>
 {
 public:
     POINTER_DEFINITIONS(ChannelPutGetLocal);
     virtual ~ChannelPutGetLocal();
-    virtual void destroy() {} // DEPRECATED
     static ChannelPutGetLocalPtr create(
         ChannelLocalPtr const &channelLocal,
         ChannelPutGetRequester::shared_pointer const & channelPutGetRequester,
@@ -681,6 +702,13 @@ void ChannelPutGetLocal::putGet(
 {
     ChannelPutGetRequester::shared_pointer requester = channelPutGetRequester.lock();
     if(!requester) return;
+    ChannelLocalPtr channel(channelLocal.lock());
+    if(!channel) throw std::logic_error("channel is deleted");
+    if(!channel->canWrite()||!channel->canRead() ) {
+        Status status = Status::error("ChannelPutGet::putGet is not allowed");
+        requester->putGetDone(status,getPtrSelf(),PVStructurePtr(),BitSetPtr());
+        return;
+    }
     PVRecordPtr pvr(pvRecord.lock());
     if(!pvr) throw std::logic_error("pvRecord is deleted");
     try {
@@ -709,6 +737,13 @@ void ChannelPutGetLocal::getPut()
 {
     ChannelPutGetRequester::shared_pointer requester = channelPutGetRequester.lock();
     if(!requester) return;
+    ChannelLocalPtr channel(channelLocal.lock());
+    if(!channel) throw std::logic_error("channel is deleted");
+    if(!channel->canRead()) {
+        Status status = Status::error("ChannelPutGet::getPut is not allowed");
+        requester->getPutDone(status,getPtrSelf(),PVStructurePtr(),BitSetPtr());
+        return;
+    }
     PVRecordPtr pvr(pvRecord.lock());
     if(!pvr) throw std::logic_error("pvRecord is deleted");
     try {
@@ -736,6 +771,13 @@ void ChannelPutGetLocal::getGet()
 {
     ChannelPutGetRequester::shared_pointer requester = channelPutGetRequester.lock();
     if(!requester) return;
+    ChannelLocalPtr channel(channelLocal.lock());
+    if(!channel) throw std::logic_error("channel is deleted");
+    if(!channel->canRead()) {
+        Status status = Status::error("ChannelPutGet::getGet is not allowed");
+        requester->getPutDone(status,getPtrSelf(),PVStructurePtr(),BitSetPtr());
+        return;
+    }
     PVRecordPtr pvr(pvRecord.lock());
     if(!pvr) throw std::logic_error("pvRecord is deleted");
     try {
@@ -760,13 +802,12 @@ void ChannelPutGetLocal::getGet()
 
 
 class ChannelRPCLocal :
-    public ChannelRPC,
-    public RPCResponseCallback,
+    public epics::pvAccess::ChannelRPC,
+    public epics::pvAccess::RPCResponseCallback,
     public std::tr1::enable_shared_from_this<ChannelRPCLocal>
 {
 public:
     POINTER_DEFINITIONS(ChannelRPCLocal);
-    virtual void destroy() {} // DEPRECATED
     static ChannelRPCLocalPtr create(
         ChannelLocalPtr const & channelLocal,
         ChannelRPCRequester::shared_pointer const & channelRPCRequester,
@@ -871,7 +912,7 @@ void ChannelRPCLocal::processRequest(
     {
         result = service->request(pvArgument);
     }
-    catch (RPCRequestException& rre)
+    catch (epics::pvAccess::RPCRequestException& rre)
     {
         status = Status(rre.getStatus(), rre.what());
         ok = false;
@@ -952,13 +993,12 @@ void ChannelRPCLocal::request(PVStructurePtr const & pvArgument)
 typedef std::tr1::shared_ptr<PVArray> PVArrayPtr;
 
 class ChannelArrayLocal :
-    public ChannelArray,
+    public epics::pvAccess::ChannelArray,
     public std::tr1::enable_shared_from_this<ChannelArrayLocal>
 {
 public:
     POINTER_DEFINITIONS(ChannelArrayLocal);
     virtual ~ChannelArrayLocal();
-    virtual void destroy() {} // DEPRECATED
     static ChannelArrayLocalPtr create(
         ChannelLocalPtr const &channelLocal,
         ChannelArrayRequester::shared_pointer const & channelArrayRequester,
@@ -1231,7 +1271,13 @@ ChannelLocal::ChannelLocal(
 :
     requester(requester),
     provider(provider),
-    pvRecord(pvRecord)
+    pvRecord(pvRecord),
+    asLevel(pvRecord->getAsLevel()),
+    asGroup(getAsGroup(pvRecord)),
+    asUser(getAsUser(requester)),
+    asHost(getAsHost(requester)),
+    asMemberPvt(0),
+    asClientPvt(0)
 {
     if(pvRecord->getTraceLevel()>0) {
          cout << "ChannelLocal::ChannelLocal()"
@@ -1239,11 +1285,92 @@ ChannelLocal::ChannelLocal(
               << " requester exists " << (requester ? "true" : "false")
               << endl;
     }
+    if (pvRecord->getAsGroup().empty() || asAddMember(&asMemberPvt, &asGroup[0]) != 0) {
+        asMemberPvt = 0;
+    } 
+    if (asMemberPvt) {
+        asAddClient(&asClientPvt, asMemberPvt, asLevel, &asUser[0], &asHost[0]);
+    }
 }
 
+std::vector<char> ChannelLocal::toCharArray(const std::string& s)
+{
+    std::vector<char> v(s.begin(), s.end());
+    v.push_back('\0');
+    return v;
+}
+
+std::vector<char> ChannelLocal::getAsGroup(const PVRecordPtr& pvRecord)
+{
+    return toCharArray(pvRecord->getAsGroup());
+}
+
+std::vector<char> ChannelLocal::getAsUser(const ChannelRequester::shared_pointer& requester)
+{
+    PeerInfo::const_shared_pointer info(requester->getPeerInfo());
+    std::string user;
+    if(info && info->identified) {
+        if(info->authority=="ca") {
+            user = info->account;
+            size_t first = user.find_last_of('/');
+            if(first != std::string::npos) {
+                // prevent CA accounts like "<authority>/<user>"
+                user = user.substr(first+1);
+            }
+        } 
+        else {
+            user = info->authority + "/" + info->account;
+        }
+    } 
+    return toCharArray(user);
+}
+
+std::vector<char> ChannelLocal::getAsHost(const epics::pvAccess::ChannelRequester::shared_pointer& requester)
+{
+    PeerInfo::const_shared_pointer info(requester->getPeerInfo());
+    std::string host;
+    if(info && info->identified) {
+        host= info->peer;
+    } 
+    else {
+        // anonymous
+        host = requester->getRequesterName();
+    }
+
+    // handle form "ip:port"
+    size_t last = host.find_first_of(':');
+    if(last == std::string::npos) {
+        last = host.size();
+    }
+    host.resize(last);
+    return toCharArray(host);
+}
+
+bool ChannelLocal::canWrite() 
+{
+    if(!asActive || (asClientPvt && asCheckPut(asClientPvt))) {
+        return true;
+    }
+    return false;
+}
+
+bool ChannelLocal::canRead()
+{
+    if(!asActive || (asClientPvt && asCheckGet(asClientPvt))) {
+        return true;
+    }
+    return false;
+}
 ChannelLocal::~ChannelLocal()
 {
-// cout << "~ChannelLocal()" << endl;
+    if(asMemberPvt) {
+        asRemoveMember(&asMemberPvt);
+        asMemberPvt = 0;
+    }
+    if(asClientPvt) {
+        asRemoveClient(&asClientPvt);
+        asClientPvt = 0;
+    }
 }
 
 ChannelProvider::shared_pointer ChannelLocal::getProvider()

src/pvAccess/channelProviderLocal.cpp

@@ -10,6 +10,7 @@
  */
 
 #include <epicsThread.h>
+#include <asLib.h>
 #include <pv/serverContext.h>
 #include <pv/syncChannelFind.h>
 #include <pv/pvTimeStamp.h>
@@ -176,4 +177,18 @@ Channel::shared_pointer ChannelProviderLocal::createChannel(
     return createChannel(channelName, channelRequester, priority);
 }
 
+void ChannelProviderLocal::initAs(const std::string& filePath, const std::string& substitutions)
+{
+    int status = asInitFile(filePath.c_str(), substitutions.c_str());
+    if(status) {
+        throw std::runtime_error("Invalid AS configuration.");
+    }
+}
+
+bool ChannelProviderLocal::isAsActive()
+{
+    return asActive;
+}
+
+
 }}

src/pvAccess/monitorFactory.cpp

@@ -141,7 +141,6 @@ class MonitorLocal :
 public:
     POINTER_DEFINITIONS(MonitorLocal);
     virtual ~MonitorLocal();
-    virtual void destroy() {} // DEPRECATED
     virtual Status start();
     virtual Status stop();
     virtual MonitorElementPtr poll();
@@ -293,6 +292,12 @@ void MonitorLocal::dataPut(PVRecordFieldPtr const & pvRecordField)
     {
         cout << "MonitorLocal::dataPut(pvRecordField)" << endl;
     }
+    // If this record field is the master field, and the master field was not
+    // requested, we do not proceed with copy
+    bool isMasterField = pvRecordField->getPVRecord()->getPVStructure()->getFieldOffset()==0;
+    if (isMasterField && !pvCopy->isMasterFieldRequested()) {
+        return;
+    }
     if(state!=active) return;
     {
         Lock xx(mutex);

src/pvAccess/registerChannelProviderLocal.cpp

@@ -46,7 +46,6 @@ extern "C" void pvdbl(const iocshArgBuf *args)
 static void registerChannelProviderLocal(void)
 {
     static int firstTime = 1;
-cout << "registerChannelProviderLocal firstTime " << (firstTime ? "true" : "false") << endl;
     if (firstTime) {
         firstTime = 0;
         iocshRegister(&pvdblFuncDef, pvdbl);

src/special/Makefile

@@ -2,17 +2,17 @@
 
 SRC_DIRS += $(PVDATABASE_SRC)/special
 
-LIBSRCS += traceRecord.cpp
-LIBSRCS += removeRecord.cpp
-LIBSRCS += addRecord.cpp
-LIBSRCS += processRecord.cpp
+DBD += pvdbcrScalarRecord.dbd
+DBD += pvdbcrScalarArrayRecord.dbd
+DBD += pvdbcrAddRecord.dbd
+DBD += pvdbcrRemoveRecord.dbd
+DBD += pvdbcrProcessRecord.dbd
+DBD += pvdbcrTraceRecord.dbd
+DBD += pvdbcrAllRecords.dbd
 
-DBD += traceRecordRegister.dbd
-DBD += removeRecordRegister.dbd
-DBD += addRecordRegister.dbd
-DBD += processRecordRegister.dbd
-
-LIBSRCS += traceRecordRegister.cpp
-LIBSRCS += removeRecordRegister.cpp
-LIBSRCS += addRecordRegister.cpp
-LIBSRCS += processRecordRegister.cpp
+LIBSRCS += pvdbcrScalarRecord.cpp
+LIBSRCS += pvdbcrScalarArrayRecord.cpp
+LIBSRCS += pvdbcrAddRecord.cpp
+LIBSRCS += pvdbcrRemoveRecord.cpp
+LIBSRCS += pvdbcrProcessRecord.cpp
+LIBSRCS += pvdbcrTraceRecord.cpp

src/special/addRecordRegister.cpp

@@ -1,62 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-/**
- * @author mrk
- * @date 2013.07.24
- */
-
-
-/* Author: Marty Kraimer */
-#include <epicsThread.h>
-#include <iocsh.h>
-#include <pv/event.h>
-#include <pv/pvAccess.h>
-#include <pv/serverContext.h>
-#include <pv/pvData.h>
-#include <pv/pvTimeStamp.h>
-#include <pv/rpcService.h>
-
-// The following must be the last include for code pvDatabase uses
-#include <epicsExport.h>
-#define epicsExportSharedSymbols
-#include "pv/pvStructureCopy.h"
-#include "pv/pvDatabase.h"
-#include "pv/addRecord.h"
-
-using namespace epics::pvData;
-using namespace epics::pvAccess;
-using namespace epics::pvDatabase;
-using namespace std;
-
-static const iocshArg testArg0 = { "recordName", iocshArgString };
-static const iocshArg *testArgs[] = {
-    &testArg0};
-
-static const iocshFuncDef addRecordFuncDef = {"addRecordCreate", 1,testArgs};
-
-static void addRecordCallFunc(const iocshArgBuf *args)
-{
-    char *recordName = args[0].sval;
-    if(!recordName) {
-        throw std::runtime_error("addRecordCreate invalid number of arguments");
-    }
-    AddRecordPtr record = AddRecord::create(recordName);
-    bool result = PVDatabase::getMaster()->addRecord(record);
-    if(!result) cout << "recordname" << " not added" << endl;
-}
-
-static void addRecordRegister(void)
-{
-    static int firstTime = 1;
-    if (firstTime) {
-        firstTime = 0;
-        iocshRegister(&addRecordFuncDef, addRecordCallFunc);
-    }
-}
-
-extern "C" {
-    epicsExportRegistrar(addRecordRegister);
-}

src/special/addRecordRegister.dbd

@@ -1 +0,0 @@
-registrar("addRecordRegister")

src/special/processRecordRegister.cpp

@@ -1,67 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-/**
- * @author mrk
- * @date 2013.07.24
- */
-
-
-/* Author: Marty Kraimer */
-
-#include <epicsThread.h>
-#include <iocsh.h>
-#include <pv/event.h>
-#include <pv/pvAccess.h>
-#include <pv/serverContext.h>
-#include <pv/pvData.h>
-#include <pv/pvTimeStamp.h>
-#include <pv/rpcService.h>
-
-// The following must be the last include for code pvDatabase uses
-#include <epicsExport.h>
-#define epicsExportSharedSymbols
-#include "pv/pvStructureCopy.h"
-#include "pv/pvDatabase.h"
-#include "pv/processRecord.h"
-
-
-using namespace epics::pvData;
-using namespace epics::pvAccess;
-using namespace epics::pvDatabase;
-using namespace std;
-
-static const iocshArg testArg0 = { "recordName", iocshArgString };
-static const iocshArg testArg1 = { "delay", iocshArgDouble };
-static const iocshArg *testArgs[] = {
-    &testArg0,&testArg1};
-
-static const iocshFuncDef processRecordFuncDef = {"processRecordCreate", 2,testArgs};
-
-static void processRecordCallFunc(const iocshArgBuf *args)
-{
-    char *recordName = args[0].sval;
-    if(!recordName) {
-        throw std::runtime_error("processRecordCreate invalid number of arguments");
-    }
-    double delay = args[1].dval;
-    if(delay<0.0) delay = 1.0;
-    ProcessRecordPtr record = ProcessRecord::create(recordName,delay);
-    bool result = PVDatabase::getMaster()->addRecord(record);
-    if(!result) cout << "recordname" << " not added" << endl;
-}
-
-static void processRecordRegister(void)
-{
-    static int firstTime = 1;
-    if (firstTime) {
-        firstTime = 0;
-        iocshRegister(&processRecordFuncDef, processRecordCallFunc);
-    }
-}
-
-extern "C" {
-    epicsExportRegistrar(processRecordRegister);
-}

src/special/processRecordRegister.dbd

@@ -1 +0,0 @@
-registrar("processRecordRegister")

src/special/pvdbcrAddRecord.cpp

@@ -1,46 +1,36 @@
-/* addRecord.cpp */
-/**
- * Copyright - See the COPYRIGHT that is included with this distribution.
- * EPICS pvData is distributed subject to a Software License Agreement found
- * in file LICENSE that is included with this distribution.
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
  */
+
 /**
  * @author mrk
- * @date 2013.04.18
+ * @date 2021.04.07
  */
-
-#include <string>
-#include <cstring>
-#include <stdexcept>
-#include <memory>
-#include <set>
-
-#include <pv/lock.h>
-#include <pv/pvType.h>
-#include <pv/pvData.h>
+#include <iocsh.h>
 #include <pv/standardField.h>
-#include <pv/pvTimeStamp.h>
+#include <pv/standardPVField.h>
 #include <pv/timeStamp.h>
-#include <pv/rpcService.h>
+#include <pv/pvTimeStamp.h>
+#include <pv/alarm.h>
+#include <pv/pvAlarm.h>
 #include <pv/pvAccess.h>
-#include <pv/status.h>
 #include <pv/serverContext.h>
+#include <pv/rpcService.h>
 
-
+// The following must be the last include for code exampleLink uses
+#include <epicsExport.h>
 #define epicsExportSharedSymbols
-#include "pv/pvStructureCopy.h"
 #include "pv/pvDatabase.h"
-#include "pv/addRecord.h"
-
-using std::tr1::static_pointer_cast;
+#include "pv/pvdbcrAddRecord.h"
 using namespace epics::pvData;
-using namespace epics::pvAccess;
 using namespace std;
 
 namespace epics { namespace pvDatabase {
 
-AddRecordPtr AddRecord::create(
-    std::string const & recordName)
+PvdbcrAddRecordPtr PvdbcrAddRecord::create(
+    std::string const & recordName,
+    int asLevel,std::string const & asGroup)
 {
     FieldCreatePtr fieldCreate = getFieldCreate();
     PVDataCreatePtr pvDataCreate = getPVDataCreate();
@@ -55,20 +45,21 @@ AddRecordPtr AddRecord::create(
             endNested()->
         createStructure();
     PVStructurePtr pvStructure = pvDataCreate->createPVStructure(topStructure);
-    AddRecordPtr pvRecord(
-        new AddRecord(recordName,pvStructure));
+    PvdbcrAddRecordPtr pvRecord(
+        new PvdbcrAddRecord(recordName,pvStructure,asLevel,asGroup));
     if(!pvRecord->init()) pvRecord.reset();
     return pvRecord;
 }
 
-AddRecord::AddRecord(
+PvdbcrAddRecord::PvdbcrAddRecord(
     std::string const & recordName,
-    epics::pvData::PVStructurePtr const & pvStructure)
-: PVRecord(recordName,pvStructure)
+    PVStructurePtr const & pvStructure,
+    int asLevel,std::string const & asGroup)
+: PVRecord(recordName,pvStructure,asLevel,asGroup)
 {
 }
 
-bool AddRecord::init()
+bool PvdbcrAddRecord::init()
 {
     initPVRecord();
     PVStructurePtr pvStructure = getPVStructure();
@@ -79,7 +70,7 @@ bool AddRecord::init()
     return true;
 }
 
-void AddRecord::process()
+void PvdbcrAddRecord::process()
 {
     PVDataCreatePtr pvDataCreate = getPVDataCreate();
     string name = pvRecordName->get();
@@ -102,7 +93,7 @@ void AddRecord::process()
         pvResult->put(name + " union most be a structure");
         return;
     }
-    StructureConstPtr st = static_pointer_cast<const Structure>(pvField->getField());
+    StructureConstPtr st = std::tr1::static_pointer_cast<const Structure>(pvField->getField());
     PVStructurePtr pvStructure = pvDataCreate->createPVStructure(st);
     PVRecordPtr pvRec = PVRecord::create(name,pvStructure);
     bool result = PVDatabase::getMaster()->addRecord(pvRec);
@@ -112,6 +103,45 @@ void AddRecord::process()
         pvResult->put("failure");
     }
 }
-
-
 }}
+
+static const iocshArg arg0 = { "recordName", iocshArgString };
+static const iocshArg arg1 = { "asLevel", iocshArgInt };
+static const iocshArg arg2 = { "asGroup", iocshArgString };
+static const iocshArg *args[] = {&arg0,&arg1,&arg2};
+
+static const iocshFuncDef pvdbcrAddRecordFuncDef = {"pvdbcrAddRecord", 3,args};
+
+static void pvdbcrAddRecordCallFunc(const iocshArgBuf *args)
+{
+    char *sval = args[0].sval;
+    if(!sval) {
+        throw std::runtime_error("pvdbcrAddRecord recordName not specified");
+    }
+    string recordName = string(sval);
+    int asLevel = args[1].ival;
+    string asGroup("DEFAULT");
+    sval = args[2].sval;
+    if(sval) {
+        asGroup = string(sval);
+    }
+    epics::pvDatabase::PvdbcrAddRecordPtr record = epics::pvDatabase::PvdbcrAddRecord::create(recordName);
+    record->setAsLevel(asLevel);
+    record->setAsGroup(asGroup);
+    epics::pvDatabase::PVDatabasePtr master = epics::pvDatabase::PVDatabase::getMaster();
+    bool result =  master->addRecord(record);
+    if(!result) cout << "recordname " << recordName << " not added" << endl;
+}
+
+static void pvdbcrAddRecord(void)
+{
+    static int firstTime = 1;
+    if (firstTime) {
+        firstTime = 0;
+        iocshRegister(&pvdbcrAddRecordFuncDef, pvdbcrAddRecordCallFunc);
+    }
+}
+
+extern "C" {
+    epicsExportRegistrar(pvdbcrAddRecord);
+}

src/special/pvdbcrAddRecord.dbd

@@ -0,0 +1 @@
+registrar("pvdbcrAddRecord")

src/special/pvdbcrAllRecords.dbd

@@ -0,0 +1,6 @@
+include "pvdbcrAddRecord.dbd"
+include "pvdbcrRemoveRecord.dbd"
+include "pvdbcrProcessRecord.dbd"
+include "pvdbcrTraceRecord.dbd"
+include "pvdbcrScalarRecord.dbd"
+include "pvdbcrScalarArrayRecord.dbd"

src/special/pvdbcrProcessRecord.cpp

@@ -1,47 +1,39 @@
-/* processRecord.cpp */
-/**
- * Copyright - See the COPYRIGHT that is included with this distribution.
- * EPICS pvData is distributed subject to a Software License Agreement found
- * in file LICENSE that is included with this distribution.
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
  */
+
 /**
  * @author mrk
- * @date 2013.04.18
+ * @date 2021.04.07
  */
-#include <map>
 #include <epicsThread.h>
+#include <epicsGuard.h>
 #include <pv/event.h>
-#include <shareLib.h>
-#include <string>
-#include <cstring>
-#include <stdexcept>
-#include <memory>
-#include <set>
-
 #include <pv/lock.h>
-#include <pv/pvType.h>
-#include <pv/pvData.h>
-#include <pv/pvTimeStamp.h>
+#include <iocsh.h>
+#include <pv/standardField.h>
+#include <pv/standardPVField.h>
 #include <pv/timeStamp.h>
-#include <pv/rpcService.h>
+#include <pv/pvTimeStamp.h>
+#include <pv/alarm.h>
+#include <pv/pvAlarm.h>
 #include <pv/pvAccess.h>
-#include <pv/status.h>
 #include <pv/serverContext.h>
+#include <pv/rpcService.h>
 
+#include <epicsExport.h>
 #define epicsExportSharedSymbols
-#include "pv/pvStructureCopy.h"
 #include "pv/pvDatabase.h"
-#include "pv/processRecord.h"
-
-using std::tr1::static_pointer_cast;
+#include "pv/pvdbcrProcessRecord.h"
 using namespace epics::pvData;
-using namespace epics::pvAccess;
 using namespace std;
 
 namespace epics { namespace pvDatabase {
 
-ProcessRecordPtr ProcessRecord::create(
-    std::string const & recordName,double delay)
+PvdbcrProcessRecordPtr PvdbcrProcessRecord::create(
+    std::string const & recordName,double delay,
+    int asLevel,std::string const & asGroup)
 {
     FieldCreatePtr fieldCreate = getFieldCreate();
     PVDataCreatePtr pvDataCreate = getPVDataCreate();
@@ -55,39 +47,24 @@ ProcessRecordPtr ProcessRecord::create(
             endNested()->
         createStructure();
     PVStructurePtr pvStructure = pvDataCreate->createPVStructure(topStructure);
-    ProcessRecordPtr pvRecord(
-        new ProcessRecord(recordName,pvStructure,delay));
+    PvdbcrProcessRecordPtr pvRecord(
+        new PvdbcrProcessRecord(recordName,pvStructure,delay,asLevel,asGroup));
     if(!pvRecord->init()) pvRecord.reset();
     return pvRecord;
 }
 
-void ProcessRecord::startThread()
-{
-    thread = EpicsThreadPtr(new epicsThread(
-        *this,
-        "processRecord",
-        epicsThreadGetStackSize(epicsThreadStackSmall),
-        epicsThreadPriorityLow));
-    thread->start();
-}
 
-void ProcessRecord::stop()
-{
-    runStop.signal();
-    runReturn.wait();
-}
-
-
-ProcessRecord::ProcessRecord(
+PvdbcrProcessRecord::PvdbcrProcessRecord(
     std::string const & recordName,
-    epics::pvData::PVStructurePtr const & pvStructure,double delay)
-: PVRecord(recordName,pvStructure),
+    epics::pvData::PVStructurePtr const & pvStructure,double delay,
+    int asLevel,std::string const & asGroup)
+: PVRecord(recordName,pvStructure,asLevel,asGroup),
   delay(delay),
   pvDatabase(PVDatabase::getMaster())
 {
 }
 
-bool ProcessRecord::init()
+bool PvdbcrProcessRecord::init()
 {
     initPVRecord();
     PVStructurePtr pvStructure = getPVStructure();
@@ -100,7 +77,27 @@ bool ProcessRecord::init()
     return true;
 }
 
-void ProcessRecord::process()
+void PvdbcrProcessRecord::setDelay(double delay) {this->delay = delay;}
+
+double PvdbcrProcessRecord::getDelay() {return delay;}
+
+void PvdbcrProcessRecord::startThread()
+{
+    thread = EpicsThreadPtr(new epicsThread(
+        *this,
+        "processRecord",
+        epicsThreadGetStackSize(epicsThreadStackSmall),
+        epicsThreadPriorityLow));
+    thread->start();
+}
+
+void PvdbcrProcessRecord::stop()
+{
+    runStop.signal();
+    runReturn.wait();
+}
+
+void PvdbcrProcessRecord::process()
 {
     string recordName = pvRecordName->get();
     string command = pvCommand->get();
@@ -135,7 +132,7 @@ void ProcessRecord::process()
     }
 }
 
-void ProcessRecord::run()
+void PvdbcrProcessRecord::run()
 {
     while(true) {
         if(runStop.tryWait()) {
@@ -161,6 +158,49 @@ void ProcessRecord::run()
         }
     }
 }
-
-
 }}
+
+static const iocshArg arg0 = { "recordName", iocshArgString };
+static const iocshArg arg1 = { "delay", iocshArgDouble };
+static const iocshArg arg2 = { "asLevel", iocshArgInt };
+static const iocshArg arg3 = { "asGroup", iocshArgString };
+static const iocshArg *args[] = {&arg0,&arg1,&arg2,&arg3};
+
+static const iocshFuncDef pvdbcrProcessRecordFuncDef = {"pvdbcrProcessRecord", 4,args};
+
+static void pvdbcrProcessRecordCallFunc(const iocshArgBuf *args)
+{
+    char *sval = args[0].sval;
+    if(!sval) {
+        throw std::runtime_error("pvdbcrProcessRecord recordName not specified");
+    }
+    string recordName = string(sval);
+    double delay = args[1].dval;
+    if(delay<0.0) delay = 1.0;
+    int asLevel = args[2].ival;
+    string asGroup("DEFAULT");
+    sval = args[3].sval;
+    if(sval) {
+        asGroup = string(sval);
+    }
+    epics::pvDatabase::PvdbcrProcessRecordPtr record
+         = epics::pvDatabase::PvdbcrProcessRecord::create(recordName,delay);
+    record->setAsLevel(asLevel);
+    record->setAsGroup(asGroup);
+    epics::pvDatabase::PVDatabasePtr master = epics::pvDatabase::PVDatabase::getMaster();
+    bool result =  master->addRecord(record);
+    if(!result) cout << "recordname " << recordName << " not added" << endl;
+}
+
+static void pvdbcrProcessRecord(void)
+{
+    static int firstTime = 1;
+    if (firstTime) {
+        firstTime = 0;
+        iocshRegister(&pvdbcrProcessRecordFuncDef, pvdbcrProcessRecordCallFunc);
+    }
+}
+
+extern "C" {
+    epicsExportRegistrar(pvdbcrProcessRecord);
+}

src/special/pvdbcrProcessRecord.dbd

@@ -0,0 +1 @@
+registrar("pvdbcrProcessRecord")

src/special/pvdbcrRemoveRecord.cpp

@@ -0,0 +1,123 @@
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+
+/**
+ * @author mrk
+ * @date 2021.04.07
+ */
+#include <iocsh.h>
+#include <pv/standardField.h>
+#include <pv/standardPVField.h>
+#include <pv/timeStamp.h>
+#include <pv/pvTimeStamp.h>
+#include <pv/alarm.h>
+#include <pv/pvAlarm.h>
+#include <pv/pvAccess.h>
+#include <pv/serverContext.h>
+#include <pv/rpcService.h>
+
+#include <epicsExport.h>
+#define epicsExportSharedSymbols
+#include "pv/pvDatabase.h"
+#include "pv/pvdbcrRemoveRecord.h"
+using namespace epics::pvData;
+using namespace std;
+
+namespace epics { namespace pvDatabase {
+
+PvdbcrRemoveRecordPtr PvdbcrRemoveRecord::create(
+    std::string const & recordName,
+    int asLevel,std::string const & asGroup)
+{
+    FieldCreatePtr fieldCreate = getFieldCreate();
+    PVDataCreatePtr pvDataCreate = getPVDataCreate();
+    StructureConstPtr  topStructure = fieldCreate->createFieldBuilder()->
+        addNestedStructure("argument")->
+            add("recordName",pvString)->
+            endNested()->
+        addNestedStructure("result") ->
+            add("status",pvString) ->
+            endNested()->
+        createStructure();
+    PVStructurePtr pvStructure = pvDataCreate->createPVStructure(topStructure);
+    PvdbcrRemoveRecordPtr pvRecord(
+        new PvdbcrRemoveRecord(recordName,pvStructure,
+        asLevel,asGroup));
+    if(!pvRecord->init()) pvRecord.reset();
+    return pvRecord;
+}
+
+PvdbcrRemoveRecord::PvdbcrRemoveRecord(
+    std::string const & recordName,
+    epics::pvData::PVStructurePtr const & pvStructure,
+    int asLevel,std::string const & asGroup)
+: PVRecord(recordName,pvStructure,asLevel,asGroup)
+{
+}
+
+bool PvdbcrRemoveRecord::init()
+{
+    initPVRecord();
+    PVStructurePtr pvStructure = getPVStructure();
+    pvRecordName = pvStructure->getSubField<PVString>("argument.recordName");
+    if(!pvRecordName) return false;
+    pvResult = pvStructure->getSubField<PVString>("result.status");
+    if(!pvResult) return false;
+    return true;
+}
+
+void PvdbcrRemoveRecord::process()
+{
+    string name = pvRecordName->get();
+    PVRecordPtr pvRecord = PVDatabase::getMaster()->findRecord(name);
+    if(!pvRecord) {
+        pvResult->put(name + " not found");
+        return;
+    }
+    pvRecord->remove();
+    pvResult->put("success");
+}
+}}
+
+static const iocshArg arg0 = { "recordName", iocshArgString };
+static const iocshArg arg1 = { "asLevel", iocshArgInt };
+static const iocshArg arg2 = { "asGroup", iocshArgString };
+static const iocshArg *args[] = {&arg0,&arg1,&arg2};
+
+static const iocshFuncDef pvdbcrRemoveRecordFuncDef = {"pvdbcrRemoveRecord", 3,args};
+
+static void pvdbcrRemoveRecordCallFunc(const iocshArgBuf *args)
+{
+    char *sval = args[0].sval;
+    if(!sval) {
+        throw std::runtime_error("pvdbcrRemoveRecord recordName not specified");
+    }
+    string recordName = string(sval);
+    int asLevel = args[1].ival;
+    string asGroup("DEFAULT");
+    sval = args[2].sval;
+    if(sval) {
+        asGroup = string(sval);
+    }
+    epics::pvDatabase::PvdbcrRemoveRecordPtr record = epics::pvDatabase::PvdbcrRemoveRecord::create(recordName);
+    record->setAsLevel(asLevel);
+    record->setAsGroup(asGroup);
+    epics::pvDatabase::PVDatabasePtr master = epics::pvDatabase::PVDatabase::getMaster();
+    bool result =  master->addRecord(record);
+    if(!result) cout << "recordname " << recordName << " not added" << endl;
+}
+
+static void pvdbcrRemoveRecord(void)
+{
+    static int firstTime = 1;
+    if (firstTime) {
+        firstTime = 0;
+        iocshRegister(&pvdbcrRemoveRecordFuncDef, pvdbcrRemoveRecordCallFunc);
+    }
+}
+
+extern "C" {
+    epicsExportRegistrar(pvdbcrRemoveRecord);
+}

src/special/pvdbcrRemoveRecord.dbd

@@ -0,0 +1 @@
+registrar("pvdbcrRemoveRecord")

src/special/pvdbcrScalarArrayRecord.cpp

@@ -0,0 +1,103 @@
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+
+/**
+ * @author mrk
+ * @date 2021.04.07
+ */
+#include <iocsh.h>
+#include <pv/standardField.h>
+#include <pv/standardPVField.h>
+#include <pv/timeStamp.h>
+#include <pv/pvTimeStamp.h>
+#include <pv/alarm.h>
+#include <pv/pvAlarm.h>
+#include <pv/pvAccess.h>
+#include <pv/serverContext.h>
+#include <pv/rpcService.h>
+
+// The following must be the last include for code pvDatabase implements
+#include <epicsExport.h>
+#define epicsExportSharedSymbols
+#include "pv/pvDatabase.h"
+#include "pv/pvdbcrScalarArrayRecord.h"
+using namespace epics::pvData;
+using namespace std;
+
+namespace epics { namespace pvDatabase {
+
+PvdbcrScalarArrayRecord::PvdbcrScalarArrayRecord(
+    std::string const & recordName,epics::pvData::PVStructurePtr const & pvStructure,
+    int asLevel,std::string const & asGroup)
+: PVRecord(recordName,pvStructure,asLevel,asGroup)
+{}
+
+PvdbcrScalarArrayRecordPtr PvdbcrScalarArrayRecord::create(
+    std::string const & recordName,std::string const &  scalarType,
+    int asLevel,std::string const & asGroup)
+{
+    ScalarType st = epics::pvData::ScalarTypeFunc::getScalarType(scalarType);
+    FieldCreatePtr fieldCreate = getFieldCreate();
+    StandardFieldPtr standardField = getStandardField();
+    PVDataCreatePtr pvDataCreate = getPVDataCreate();
+    StructureConstPtr top = fieldCreate->createFieldBuilder()->
+        addArray("value",st) ->
+        add("timeStamp",standardField->timeStamp()) ->
+        add("alarm",standardField->alarm()) ->
+        createStructure();
+    PVStructurePtr pvStructure = pvDataCreate->createPVStructure(top);   
+    PvdbcrScalarArrayRecordPtr pvRecord(new PvdbcrScalarArrayRecord(recordName,pvStructure,asLevel,asGroup));
+    pvRecord->initPVRecord();
+    return pvRecord;
+};
+}}
+
+static const iocshArg arg0 = { "recordName", iocshArgString };
+static const iocshArg arg1 = { "scalarType", iocshArgString };
+static const iocshArg arg2 = { "asLevel", iocshArgInt };
+static const iocshArg arg3 = { "asGroup", iocshArgString };
+static const iocshArg *args[] = {&arg0,&arg1,&arg2,&arg3};
+
+static const iocshFuncDef pvdbcrScalarArrayFuncDef = {"pvdbcrScalarArrayRecord", 4,args};
+
+static void pvdbcrScalarArrayCallFunc(const iocshArgBuf *args)
+{
+    char *sval = args[0].sval;
+    if(!sval) {
+        throw std::runtime_error("pvdbcrScalarArrayRecord recordName not specified");
+    }
+    string recordName = string(sval);
+    sval = args[1].sval;
+    if(!sval) {
+        throw std::runtime_error("pvdbcrScalarArrayRecord scalarType not specified");
+    }
+    string scalarType = string(sval);
+    int asLevel = args[2].ival;
+    string asGroup("DEFAULT");
+    sval = args[3].sval;
+    if(sval) {
+        asGroup = string(sval);
+    }
+    epics::pvDatabase::PvdbcrScalarArrayRecordPtr record
+        = epics::pvDatabase::PvdbcrScalarArrayRecord::create(recordName,scalarType);
+    epics::pvDatabase::PVDatabasePtr master = epics::pvDatabase::PVDatabase::getMaster();
+    record->setAsLevel(asLevel);
+    record->setAsGroup(asGroup);
+    bool result =  master->addRecord(record);
+    if(!result) cout << "recordname " << recordName << " not added" << endl;
+}
+
+static void pvdbcrScalarArrayRecord(void)
+{
+    static int firstTime = 1;
+    if (firstTime) {
+        firstTime = 0;
+        iocshRegister(&pvdbcrScalarArrayFuncDef, pvdbcrScalarArrayCallFunc);
+    }
+}
+
+extern "C" {
+    epicsExportRegistrar(pvdbcrScalarArrayRecord);
+}

src/special/pvdbcrScalarArrayRecord.dbd

@@ -0,0 +1 @@
+registrar("pvdbcrScalarArrayRecord")

src/special/pvdbcrScalarRecord.cpp

@@ -0,0 +1,103 @@
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+
+/**
+ * @author mrk
+ * @date 2021.04.07
+ */
+#include <iocsh.h>
+#include <pv/standardField.h>
+#include <pv/standardPVField.h>
+#include <pv/timeStamp.h>
+#include <pv/pvTimeStamp.h>
+#include <pv/alarm.h>
+#include <pv/pvAlarm.h>
+#include <pv/pvAccess.h>
+#include <pv/serverContext.h>
+#include <pv/rpcService.h>
+
+// The following must be the last include for code pvDatabase implements
+#include <epicsExport.h>
+#define epicsExportSharedSymbols
+#include "pv/pvDatabase.h"
+#include "pv/pvdbcrScalarRecord.h"
+using namespace epics::pvData;
+using namespace std;
+
+namespace epics { namespace pvDatabase {
+
+PvdbcrScalarRecord::PvdbcrScalarRecord(
+    std::string const & recordName,epics::pvData::PVStructurePtr const & pvStructure,
+    int asLevel,std::string const & asGroup)
+: PVRecord(recordName,pvStructure,asLevel,asGroup)
+{}
+
+PvdbcrScalarRecordPtr PvdbcrScalarRecord::create(
+    std::string const & recordName,std::string const &  scalarType,
+    int asLevel,std::string const & asGroup)
+{
+    ScalarType st = epics::pvData::ScalarTypeFunc::getScalarType(scalarType);
+    FieldCreatePtr fieldCreate = getFieldCreate();
+    StandardFieldPtr standardField = getStandardField();
+    PVDataCreatePtr pvDataCreate = getPVDataCreate();
+    StructureConstPtr top = fieldCreate->createFieldBuilder()->
+        add("value",st) ->
+        add("timeStamp",standardField->timeStamp()) ->
+        add("alarm",standardField->alarm()) ->
+        createStructure();
+    PVStructurePtr pvStructure = pvDataCreate->createPVStructure(top);   
+    PvdbcrScalarRecordPtr pvRecord(new PvdbcrScalarRecord(recordName,pvStructure,asLevel,asGroup));
+    pvRecord->initPVRecord();
+    return pvRecord;
+};
+}}
+
+static const iocshArg arg0 = { "recordName", iocshArgString };
+static const iocshArg arg1 = { "scalarType", iocshArgString };
+static const iocshArg arg2 = { "asLevel", iocshArgInt };
+static const iocshArg arg3 = { "asGroup", iocshArgString };
+static const iocshArg *args[] = {&arg0,&arg1,&arg2,&arg3};
+
+static const iocshFuncDef pvdbcrScalarFuncDef = {"pvdbcrScalarRecord", 4,args};
+
+static void pvdbcrScalarCallFunc(const iocshArgBuf *args)
+{
+    char *sval = args[0].sval;
+    if(!sval) {
+        throw std::runtime_error("pvdbcrScalarRecord recordName not specified");
+    }
+    string recordName = string(sval);
+    sval = args[1].sval;
+    if(!sval) {
+        throw std::runtime_error("pvdbcrScalarRecord scalarType not specified");
+    }
+    string scalarType = string(sval);
+    int asLevel = args[2].ival;
+    string asGroup("DEFAULT");
+    sval = args[3].sval;
+    if(sval) {
+        asGroup = string(sval);
+    }
+    epics::pvDatabase::PvdbcrScalarRecordPtr record
+        = epics::pvDatabase::PvdbcrScalarRecord::create(recordName,scalarType);
+    epics::pvDatabase::PVDatabasePtr master = epics::pvDatabase::PVDatabase::getMaster();
+    record->setAsLevel(asLevel);
+    record->setAsGroup(asGroup);
+    bool result =  master->addRecord(record);
+    if(!result) cout << "recordname " << recordName << " not added" << endl;
+}
+
+static void pvdbcrScalarRecord(void)
+{
+    static int firstTime = 1;
+    if (firstTime) {
+        firstTime = 0;
+        iocshRegister(&pvdbcrScalarFuncDef, pvdbcrScalarCallFunc);
+    }
+}
+
+extern "C" {
+    epicsExportRegistrar(pvdbcrScalarRecord);
+}

src/special/pvdbcrScalarRecord.dbd

@@ -0,0 +1 @@
+registrar("pvdbcrScalarRecord")

src/special/pvdbcrTraceRecord.cpp

@@ -0,0 +1,128 @@
+/*
+ * Copyright information and license terms for this software can be
+ * found in the file LICENSE that is included with the distribution
+ */
+
+/**
+ * @author mrk
+ * @date 2021.04.07
+ */
+#include <iocsh.h>
+#include <pv/standardField.h>
+#include <pv/standardPVField.h>
+#include <pv/timeStamp.h>
+#include <pv/pvTimeStamp.h>
+#include <pv/alarm.h>
+#include <pv/pvAlarm.h>
+#include <pv/pvAccess.h>
+#include <pv/serverContext.h>
+#include <pv/rpcService.h>
+
+// The following must be the last include
+#include <epicsExport.h>
+#define epicsExportSharedSymbols
+#include "pv/pvDatabase.h"
+#include "pv/pvdbcrTraceRecord.h"
+using namespace epics::pvData;
+using namespace std;
+
+namespace epics { namespace pvDatabase {
+
+PvdbcrTraceRecordPtr PvdbcrTraceRecord::create(
+    std::string const & recordName,
+    int asLevel,std::string const & asGroup)
+{
+    FieldCreatePtr fieldCreate = getFieldCreate();
+    PVDataCreatePtr pvDataCreate = getPVDataCreate();
+    StructureConstPtr  topStructure = fieldCreate->createFieldBuilder()->
+        addNestedStructure("argument")->
+            add("recordName",pvString)->
+            add("level",pvInt)->
+            endNested()->
+        addNestedStructure("result") ->
+            add("status",pvString) ->
+            endNested()->
+        createStructure();
+    PVStructurePtr pvStructure = pvDataCreate->createPVStructure(topStructure);
+    PvdbcrTraceRecordPtr pvRecord(
+        new PvdbcrTraceRecord(recordName,pvStructure,asLevel,asGroup));
+    if(!pvRecord->init()) pvRecord.reset();
+    return pvRecord;
+}
+
+PvdbcrTraceRecord::PvdbcrTraceRecord(
+    std::string const & recordName,
+    epics::pvData::PVStructurePtr const & pvStructure,
+    int asLevel,std::string const & asGroup)
+: PVRecord(recordName,pvStructure,asLevel,asGroup)
+{
+}
+
+
+bool PvdbcrTraceRecord::init()
+{
+    initPVRecord();
+    PVStructurePtr pvStructure = getPVStructure();
+    pvRecordName = pvStructure->getSubField<PVString>("argument.recordName");
+    if(!pvRecordName) return false;
+    pvLevel = pvStructure->getSubField<PVInt>("argument.level");
+    if(!pvLevel) return false;
+    pvResult = pvStructure->getSubField<PVString>("result.status");
+    if(!pvResult) return false;
+    return true;
+}
+
+void PvdbcrTraceRecord::process()
+{
+    string name = pvRecordName->get();
+    PVRecordPtr pvRecord = PVDatabase::getMaster()->findRecord(name);
+    if(!pvRecord) {
+        pvResult->put(name + " not found");
+        return;
+    }
+    pvRecord->setTraceLevel(pvLevel->get());
+    pvResult->put("success");
+}
+}}
+
+static const iocshArg arg0 = { "recordName", iocshArgString };
+static const iocshArg arg1 = { "asLevel", iocshArgInt };
+static const iocshArg arg2 = { "asGroup", iocshArgString };
+static const iocshArg *args[] = {&arg0,&arg1,&arg2};
+
+static const iocshFuncDef pvdbcrTraceRecordFuncDef = {"pvdbcrTraceRecord", 3,args};
+
+static void pvdbcrTraceRecordCallFunc(const iocshArgBuf *args)
+{
+    char *sval = args[0].sval;
+    if(!sval) {
+        throw std::runtime_error("pvdbcrTraceRecord recordName not specified");
+    }
+    string recordName = string(sval);
+    int asLevel = args[1].ival;
+    string asGroup("DEFAULT");
+    sval = args[2].sval;
+    if(sval) {
+        asGroup = string(sval);
+    }
+    epics::pvDatabase::PvdbcrTraceRecordPtr record
+        = epics::pvDatabase::PvdbcrTraceRecord::create(recordName);
+    record->setAsLevel(asLevel);
+    record->setAsGroup(asGroup);
+    epics::pvDatabase::PVDatabasePtr master = epics::pvDatabase::PVDatabase::getMaster();
+    bool result =  master->addRecord(record);
+    if(!result) cout << "recordname " << recordName << " not added" << endl;
+}
+
+static void pvdbcrTraceRecord(void)
+{
+    static int firstTime = 1;
+    if (firstTime) {
+        firstTime = 0;
+        iocshRegister(&pvdbcrTraceRecordFuncDef, pvdbcrTraceRecordCallFunc);
+    }
+}
+
+extern "C" {
+    epicsExportRegistrar(pvdbcrTraceRecord);
+}

src/special/pvdbcrTraceRecord.dbd

@@ -0,0 +1 @@
+registrar("pvdbcrTraceRecord")

src/special/removeRecord.cpp

@@ -1,92 +0,0 @@
-/* removeRecord.cpp */
-/**
- * Copyright - See the COPYRIGHT that is included with this distribution.
- * EPICS pvData is distributed subject to a Software License Agreement found
- * in file LICENSE that is included with this distribution.
- */
-/**
- * @author mrk
- * @date 2013.04.18
- */
-
-#include <string>
-#include <cstring>
-#include <stdexcept>
-#include <memory>
-#include <set>
-
-#include <pv/lock.h>
-#include <pv/pvType.h>
-#include <pv/pvData.h>
-#include <pv/pvTimeStamp.h>
-#include <pv/timeStamp.h>
-#include <pv/rpcService.h>
-#include <pv/pvAccess.h>
-#include <pv/status.h>
-#include <pv/serverContext.h>
-
-
-#define epicsExportSharedSymbols
-#include "pv/pvStructureCopy.h"
-#include "pv/pvDatabase.h"
-#include "pv/removeRecord.h"
-
-using std::tr1::static_pointer_cast;
-using namespace epics::pvData;
-using namespace epics::pvAccess;
-using namespace std;
-
-namespace epics { namespace pvDatabase {
-
-RemoveRecordPtr RemoveRecord::create(
-    std::string const & recordName)
-{
-    FieldCreatePtr fieldCreate = getFieldCreate();
-    PVDataCreatePtr pvDataCreate = getPVDataCreate();
-    StructureConstPtr  topStructure = fieldCreate->createFieldBuilder()->
-        addNestedStructure("argument")->
-            add("recordName",pvString)->
-            endNested()->
-        addNestedStructure("result") ->
-            add("status",pvString) ->
-            endNested()->
-        createStructure();
-    PVStructurePtr pvStructure = pvDataCreate->createPVStructure(topStructure);
-    RemoveRecordPtr pvRecord(
-        new RemoveRecord(recordName,pvStructure));
-    if(!pvRecord->init()) pvRecord.reset();
-    return pvRecord;
-}
-
-RemoveRecord::RemoveRecord(
-    std::string const & recordName,
-    epics::pvData::PVStructurePtr const & pvStructure)
-: PVRecord(recordName,pvStructure)
-{
-}
-
-bool RemoveRecord::init()
-{
-    initPVRecord();
-    PVStructurePtr pvStructure = getPVStructure();
-    pvRecordName = pvStructure->getSubField<PVString>("argument.recordName");
-    if(!pvRecordName) return false;
-    pvResult = pvStructure->getSubField<PVString>("result.status");
-    if(!pvResult) return false;
-    return true;
-}
-
-void RemoveRecord::process()
-{
-    string name = pvRecordName->get();
-    PVRecordPtr pvRecord = PVDatabase::getMaster()->findRecord(name);
-    if(!pvRecord) {
-        pvResult->put(name + " not found");
-        return;
-    }
-    pvRecord->remove();
-    pvResult->put("success");
-}
-
-
-}}

src/special/removeRecordRegister.cpp

@@ -1,62 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-/**
- * @author mrk
- * @date 2013.07.24
- */
-
-
-/* Author: Marty Kraimer */
-#include <epicsThread.h>
-#include <iocsh.h>
-#include <pv/event.h>
-#include <pv/pvAccess.h>
-#include <pv/serverContext.h>
-#include <pv/pvData.h>
-#include <pv/pvTimeStamp.h>
-#include <pv/rpcService.h>
-
-// The following must be the last include for code pvDatabase uses
-#include <epicsExport.h>
-#define epicsExportSharedSymbols
-#include "pv/pvStructureCopy.h"
-#include "pv/pvDatabase.h"
-#include "pv/removeRecord.h"
-
-using namespace epics::pvData;
-using namespace epics::pvAccess;
-using namespace epics::pvDatabase;
-using namespace std;
-
-static const iocshArg testArg0 = { "recordName", iocshArgString };
-static const iocshArg *testArgs[] = {
-    &testArg0};
-
-static const iocshFuncDef removeRecordFuncDef = {"removeRecordCreate", 1,testArgs};
-
-static void removeRecordCallFunc(const iocshArgBuf *args)
-{
-    char *recordName = args[0].sval;
-    if(!recordName) {
-        throw std::runtime_error("removeRecordCreate invalid number of arguments");
-    }
-    RemoveRecordPtr record = RemoveRecord::create(recordName);
-    bool result = PVDatabase::getMaster()->addRecord(record);
-    if(!result) cout << "recordname" << " not added" << endl;
-}
-
-static void removeRecordRegister(void)
-{
-    static int firstTime = 1;
-    if (firstTime) {
-        firstTime = 0;
-        iocshRegister(&removeRecordFuncDef, removeRecordCallFunc);
-    }
-}
-
-extern "C" {
-    epicsExportRegistrar(removeRecordRegister);
-}

src/special/removeRecordRegister.dbd

@@ -1 +0,0 @@
-registrar("removeRecordRegister")

src/special/traceRecord.cpp

@@ -1,95 +0,0 @@
-/* traceRecord.cpp */
-/**
- * Copyright - See the COPYRIGHT that is included with this distribution.
- * EPICS pvData is distributed subject to a Software License Agreement found
- * in file LICENSE that is included with this distribution.
- */
-/**
- * @author mrk
- * @date 2013.04.18
- */
-
-#include <string>
-#include <cstring>
-#include <stdexcept>
-#include <memory>
-#include <set>
-
-#include <pv/lock.h>
-#include <pv/pvType.h>
-#include <pv/pvData.h>
-#include <pv/pvTimeStamp.h>
-#include <pv/timeStamp.h>
-#include <pv/rpcService.h>
-#include <pv/pvAccess.h>
-#include <pv/status.h>
-#include <pv/serverContext.h>
-
-#define epicsExportSharedSymbols
-#include "pv/pvStructureCopy.h"
-#include "pv/channelProviderLocal.h"
-#include "pv/traceRecord.h"
-
-using std::tr1::static_pointer_cast;
-using namespace epics::pvData;
-using namespace epics::pvAccess;
-using namespace std;
-
-namespace epics { namespace pvDatabase {
-
-TraceRecordPtr TraceRecord::create(
-    std::string const & recordName)
-{
-    FieldCreatePtr fieldCreate = getFieldCreate();
-    PVDataCreatePtr pvDataCreate = getPVDataCreate();
-    StructureConstPtr  topStructure = fieldCreate->createFieldBuilder()->
-        addNestedStructure("argument")->
-            add("recordName",pvString)->
-            add("level",pvInt)->
-            endNested()->
-        addNestedStructure("result") ->
-            add("status",pvString) ->
-            endNested()->
-        createStructure();
-    PVStructurePtr pvStructure = pvDataCreate->createPVStructure(topStructure);
-    TraceRecordPtr pvRecord(
-        new TraceRecord(recordName,pvStructure));
-    if(!pvRecord->init()) pvRecord.reset();
-    return pvRecord;
-}
-
-TraceRecord::TraceRecord(
-    std::string const & recordName,
-    epics::pvData::PVStructurePtr const & pvStructure)
-: PVRecord(recordName,pvStructure)
-{
-}
-
-
-bool TraceRecord::init()
-{
-    initPVRecord();
-    PVStructurePtr pvStructure = getPVStructure();
-    pvRecordName = pvStructure->getSubField<PVString>("argument.recordName");
-    if(!pvRecordName) return false;
-    pvLevel = pvStructure->getSubField<PVInt>("argument.level");
-    if(!pvLevel) return false;
-    pvResult = pvStructure->getSubField<PVString>("result.status");
-    if(!pvResult) return false;
-    return true;
-}
-
-void TraceRecord::process()
-{
-    string name = pvRecordName->get();
-    PVRecordPtr pvRecord = PVDatabase::getMaster()->findRecord(name);
-    if(!pvRecord) {
-        pvResult->put(name + " not found");
-        return;
-    }
-    pvRecord->setTraceLevel(pvLevel->get());
-    pvResult->put("success");
-}
-
-
-}}

src/special/traceRecordRegister.cpp

@@ -1,63 +0,0 @@
-/*
- * Copyright information and license terms for this software can be
- * found in the file LICENSE that is included with the distribution
- */
-
-/**
- * @author mrk
- * @date 2013.07.24
- */
-
-
-/* Author: Marty Kraimer */
-
-#include <epicsThread.h>
-#include <iocsh.h>
-#include <pv/event.h>
-#include <pv/pvAccess.h>
-#include <pv/serverContext.h>
-#include <pv/pvData.h>
-#include <pv/pvTimeStamp.h>
-#include <pv/rpcService.h>
-
-// The following must be the last include for code pvDatabase uses
-#include <epicsExport.h>
-#define epicsExportSharedSymbols
-#include "pv/pvStructureCopy.h"
-#include "pv/pvDatabase.h"
-#include "pv/traceRecord.h"
-
-using namespace epics::pvData;
-using namespace epics::pvAccess;
-using namespace epics::pvDatabase;
-using namespace std;
-
-static const iocshArg testArg0 = { "recordName", iocshArgString };
-static const iocshArg *testArgs[] = {
-    &testArg0};
-
-static const iocshFuncDef traceRecordFuncDef = {"traceRecordCreate", 1,testArgs};
-
-static void traceRecordCallFunc(const iocshArgBuf *args)
-{
-    char *recordName = args[0].sval;
-    if(!recordName) {
-        throw std::runtime_error("traceRecordCreate invalid number of arguments");
-    }
-    TraceRecordPtr record = TraceRecord::create(recordName);
-    bool result = PVDatabase::getMaster()->addRecord(record);
-    if(!result) cout << "recordname" << " not added" << endl;
-}
-
-static void traceRecordRegister(void)
-{
-    static int firstTime = 1;
-    if (firstTime) {
-        firstTime = 0;
-        iocshRegister(&traceRecordFuncDef, traceRecordCallFunc);
-    }
-}
-
-extern "C" {
-    epicsExportRegistrar(traceRecordRegister);
-}

src/special/traceRecordRegister.dbd

@@ -1 +0,0 @@
-registrar("traceRecordRegister")

src/support/controlSupport.cpp

@@ -46,6 +46,7 @@ epics::pvData::StructureConstPtr ControlSupport::controlField(ScalarType scalarT
 
 ControlSupportPtr ControlSupport::create(PVRecordPtr const & pvRecord)
 {
+   cerr << "ControlSupport IS DEPRECATED\n";
    ControlSupportPtr support(new ControlSupport(pvRecord));
    return support;
 }

src/support/scalarAlarmSupport.cpp

@@ -48,6 +48,7 @@ epics::pvData::StructureConstPtr ScalarAlarmSupport::scalarAlarmField()
 
 ScalarAlarmSupportPtr ScalarAlarmSupport::create(PVRecordPtr const & pvRecord)
 {
+   cerr << "ScalarAlarmSupport IS DEPRECATED\n";
    ScalarAlarmSupportPtr support(new ScalarAlarmSupport(pvRecord));
    return support;
 }

test/src/Makefile

@@ -33,3 +33,8 @@ TESTPROD_HOST += testPVAServer
 testPVAServer_SRCS += testPVAServer.cpp
 testHarness_SRCS += testPVAServer.cpp
 TESTS += testPVAServer
+
+TESTPROD_HOST += testChannelMonitor
+testChannelMonitor_SRCS += testChannelMonitor.cpp
+testHarness_SRCS += testChannelMonitor.cpp
+TESTS += testChannelMonitor

test/src/powerSupply.h

@@ -46,7 +46,6 @@ public:
         std::string const & recordName,
         epics::pvData::PVStructurePtr const & pvStructure);
     virtual ~PowerSupply();
-    virtual void destroy();
     virtual bool init();
     virtual void process();
     void put(double power,double voltage);
@@ -111,11 +110,6 @@ inline PowerSupply::~PowerSupply()
 {
 }
 
-inline void PowerSupply::destroy()
-{
-    PVRecord::destroy();
-}
-
 inline bool PowerSupply::init()
 {
     initPVRecord();

test/src/testChannelMonitor.cpp

@@ -0,0 +1,312 @@
+/* testChannelMonitor.cpp */
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * EPICS pvData is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+
+#include <epicsUnitTest.h>
+#include <testMain.h>
+
+#include <cstddef>
+#include <cstdlib>
+#include <cstddef>
+#include <string>
+#include <cstdio>
+#include <memory>
+#include <iostream>
+
+#include <epicsStdio.h>
+#include <epicsMutex.h>
+#include <epicsEvent.h>
+#include <epicsThread.h>
+
+#include <pv/standardField.h>
+#include <pv/standardPVField.h>
+#include <pv/pvData.h>
+#include <pv/pvAccess.h>
+#include <pv/channelProviderLocal.h>
+#include <pv/serverContext.h>
+#include <pv/event.h>
+#include <pv/clientFactory.h>
+
+using namespace std;
+using std::tr1::static_pointer_cast;
+using namespace epics::pvData;
+using namespace epics::pvAccess;
+using namespace epics::pvDatabase;
+namespace TR1 = std::tr1;
+
+static bool debug = true;
+
+PVStructurePtr createTestPvStructure()
+{
+    FieldCreatePtr fieldCreate = getFieldCreate();
+    StandardFieldPtr standardField = getStandardField()
+;
+    PVDataCreatePtr pvDataCreate = getPVDataCreate();
+
+    return pvDataCreate->createPVStructure(
+        fieldCreate->createFieldBuilder()->
+            add("id",pvInt) ->
+            add("x",pvInt) ->
+            add("y",pvInt) ->
+            add("z",pvInt) ->
+            add("alarm",standardField->alarm()) ->
+            add("timeStamp",standardField->timeStamp()) ->
+            createStructure());
+}
+
+class ChannelMonitorRequesterImpl : public MonitorRequester
+{
+public:
+
+    ChannelMonitorRequesterImpl(const std::string& channelName_)
+        : channelName(channelName_)
+        , lastReceivedPvStructure(createTestPvStructure())
+        , lastReceivedBitSet()
+    {
+    }
+
+    virtual string getRequesterName()
+    {
+        return "ChannelMonitorRequesterImpl";
+    }
+
+    virtual void message(const std::string& message, MessageType messageType)
+    {
+        cout << "[" << getRequesterName() << "] message(" << message << ", " << getMessageTypeName(messageType) << ")" << endl;
+    }
+
+    virtual void monitorConnect(const epics::pvData::Status& status, const Monitor::shared_pointer& /*monitor*/, const Structure::const_shared_pointer& /*structure*/)
+    {
+        if (status.isSuccess()) {
+            // show warning
+            if (!status.isOK()) {
+                cout << "[" << channelName << "] channel monitor create: " << status << endl;
+            }
+            connectionEvent.signal();
+        }
+        else {
+            cout << "[" << channelName << "] failed to create channel monitor: " << status << endl;
+        }
+    }
+
+    virtual void monitorEvent(const Monitor::shared_pointer& monitor)
+    {
+        MonitorElement::shared_pointer element;
+        while ((element = monitor->poll())) {
+            cout << "changed/overrun " << *element->changedBitSet << '/' << *element->overrunBitSet << endl;
+            if (!lastReceivedBitSet) {
+                lastReceivedBitSet = BitSet::create(element->changedBitSet->size());
+            }
+            lastReceivedBitSet->clear();
+            *lastReceivedBitSet |= *element->changedBitSet;
+            lastReceivedPvStructure->copyUnchecked(*element->pvStructurePtr);
+            monitor->release(element);
+        }
+    }
+
+    virtual void unlisten(const Monitor::shared_pointer& /*monitor*/)
+    {
+    }
+
+    bool waitUntilConnected(double timeOut)
+    {
+        return connectionEvent.wait(timeOut);
+    }
+
+    PVStructurePtr getLastReceivedPvStructure()
+    {
+        return lastReceivedPvStructure;
+    }
+
+    BitSetPtr getLastReceivedBitSet()
+    {
+        return lastReceivedBitSet;
+    }
+
+private:
+    Event event;
+    Event connectionEvent;
+    string channelName;
+    PVStructurePtr lastReceivedPvStructure;
+    BitSetPtr lastReceivedBitSet;
+};
+
+class ChannelRequesterImpl : public ChannelRequester
+{
+private:
+    Event event;
+
+public:
+
+    virtual string getRequesterName()
+    {
+        return "ChannelRequesterImpl";
+    };
+
+    virtual void message(const std::string& message, MessageType messageType)
+    {
+        cout << "[" << getRequesterName() << "] message(" << message << ", " << getMessageTypeName(messageType) << ")" << endl;
+    }
+
+    virtual void channelCreated(const Status& status, const Channel::shared_pointer& channel)
+    {
+        if (status.isSuccess()) {
+            // show warning
+            if (!status.isOK()) {
+                cout << "[" << channel->getChannelName() << "] channel create: " << status << endl;
+            }
+        }
+        else {
+            cout << "[" << channel->getChannelName() << "] failed to create a channel: " << status << endl;
+        }
+    }
+
+    virtual void channelStateChange(const Channel::shared_pointer& /*channel*/, Channel::ConnectionState connectionState)
+    {
+        if (connectionState == Channel::CONNECTED) {
+            event.signal();
+        }
+        else {
+            cout << Channel::ConnectionStateNames[connectionState] << endl;
+            exit(3);
+        }
+    }
+
+    bool waitUntilConnected(double timeOut)
+    {
+        return event.wait(timeOut);
+    }
+};
+
+
+static void test()
+{
+    PVDatabasePtr master = PVDatabase::getMaster();
+    ChannelProviderLocalPtr channelProvider = getChannelProviderLocal();
+    string recordName = "positions";
+    PVStructurePtr pvStructure = createTestPvStructure();
+    PVRecordPtr pvRecord = PVRecord::create(recordName,pvStructure);
+    master->addRecord(pvRecord);
+    pvRecord = master->findRecord(recordName);
+    {
+        pvRecord->lock();
+        pvRecord->process();
+        pvRecord->unlock();
+    }
+    if(debug) {cout << "processed positions"  << endl; }
+    ServerContext::shared_pointer ctx = startPVAServer("local",0,true,true);
+    testOk1(ctx.get() != 0);
+
+    ClientFactory::start();
+    ChannelProvider::shared_pointer provider = ChannelProviderRegistry::clients()->getProvider("pva");
+
+    cout << "creating channel: " << recordName << endl;
+    TR1::shared_ptr<ChannelRequesterImpl> channelRequesterImpl(new ChannelRequesterImpl());
+
+    Channel::shared_pointer channel = provider->createChannel(recordName, channelRequesterImpl);
+    bool channelConnected = channelRequesterImpl->waitUntilConnected(1.0);
+    testOk1(channelConnected);
+    if (channelConnected) {
+        string remoteAddress = channel->getRemoteAddress();
+        cout << "remote address: " << remoteAddress << endl;
+    }
+
+    string request = "";
+    PVStructure::shared_pointer pvRequest = CreateRequest::create()->createRequest(request);
+    TR1::shared_ptr<ChannelMonitorRequesterImpl> cmRequesterImpl(new ChannelMonitorRequesterImpl(channel->getChannelName()));
+    Monitor::shared_pointer monitor = channel->createMonitor(cmRequesterImpl, pvRequest);
+    bool monitorConnected = cmRequesterImpl->waitUntilConnected(1.0);
+    testOk1(monitorConnected);
+    Status status = monitor->start();
+    testOk1(status.isOK());
+    epicsThreadSleep(1);
+
+    //  Set id, x
+    {
+        pvRecord->beginGroupPut();
+        PVIntPtr id = pvStructure->getSubField<PVInt>("id");
+        id->put(1);
+        PVIntPtr x = pvStructure->getSubField<PVInt>("x");
+        x->put(1);
+        pvRecord->endGroupPut();
+    }
+    epicsThreadSleep(1);
+
+    //  Changed set for (id,x): 0 unset, 1 set, 2 set, 3 unset, 4 unset
+    BitSetPtr changedSet = cmRequesterImpl->getLastReceivedBitSet();
+    testOk1(!changedSet->get(0) && changedSet->get(1) && changedSet->get(2) && !changedSet->get(3) && !changedSet->get(4));
+    testOk1(*pvStructure == *cmRequesterImpl->getLastReceivedPvStructure());
+
+    //  Set id, y
+    {
+        pvRecord->beginGroupPut();
+        PVIntPtr id = pvStructure->getSubField<PVInt>("id");
+        id->put(2);
+        PVIntPtr y = pvStructure->getSubField<PVInt>("y");
+        y->put(2);
+        pvRecord->endGroupPut();
+    }
+    epicsThreadSleep(1);
+
+    //  Changed set for (id,y): 0 unset, 1 set, 2 unset, 3 set, 4 unset
+    changedSet = cmRequesterImpl->getLastReceivedBitSet();
+    testOk1(!changedSet->get(0) && changedSet->get(1) && !changedSet->get(2) && changedSet->get(3) && !changedSet->get(4));
+    testOk1(*pvStructure == *cmRequesterImpl->getLastReceivedPvStructure());
+
+    //  Set id, z
+    {
+        pvRecord->beginGroupPut();
+        PVIntPtr id = pvStructure->getSubField<PVInt>("id");
+        id->put(3);
+        PVIntPtr z = pvStructure->getSubField<PVInt>("z");
+        z->put(3);
+        pvRecord->endGroupPut();
+    }
+    epicsThreadSleep(1);
+
+    //  Changed set for (id,z): 0 unset, 1 set, 2 unset, 3 unset, 4 set
+    changedSet = cmRequesterImpl->getLastReceivedBitSet();
+    testOk1(!changedSet->get(0) && changedSet->get(1) && !changedSet->get(2) && !changedSet->get(3) && changedSet->get(4));
+    testOk1(*pvStructure == *cmRequesterImpl->getLastReceivedPvStructure());
+
+    status = monitor->stop();
+    testOk1(status.isOK());
+
+    // Test master field
+    request = "field(_)";
+    pvRequest = CreateRequest::create()->createRequest(request);
+    cmRequesterImpl = TR1::shared_ptr<ChannelMonitorRequesterImpl>(new ChannelMonitorRequesterImpl(channel->getChannelName()));
+    monitor = channel->createMonitor(cmRequesterImpl, pvRequest);
+    monitorConnected = cmRequesterImpl->waitUntilConnected(1.0);
+    testOk1(monitorConnected);
+    status = monitor->start();
+    testOk1(status.isOK());
+    epicsThreadSleep(1);
+    {
+        pvRecord->beginGroupPut();
+        PVIntPtr id = pvStructure->getSubField<PVInt>("id");
+        id->put(4);
+        PVIntPtr x = pvStructure->getSubField<PVInt>("x");
+        x->put(4);
+        pvRecord->endGroupPut();
+    }
+    epicsThreadSleep(1);
+    //  Changed set with master field requested: 0 set
+    changedSet = cmRequesterImpl->getLastReceivedBitSet();
+    testOk1(changedSet->get(0));
+    testOk1(*pvStructure == *cmRequesterImpl->getLastReceivedPvStructure());
+
+    status = monitor->stop();
+    testOk1(status.isOK());
+
+}
+
+MAIN(testChannelMonitor)
+{
+    testPlan(16);
+    test();
+    return 0;
+}

test/src/testPVCopy.cpp

@@ -274,6 +274,34 @@ static void testPVScalarArray(
     }
 }
 
+static void testMasterField(PVRecordPtr const& pvRecord)
+{
+    CreateRequest::shared_pointer createRequest = CreateRequest::create();
+    PVStructurePtr pvRequest = createRequest->createRequest("field(_)");
+    if(debug) {
+        cout << "pvRequest" << *pvRequest << endl ;
+    }
+    PVStructurePtr pvStructureRecord = pvRecord->getPVRecordStructure()->getPVStructure();
+    PVCopyPtr pvCopy = PVCopy::create(pvStructureRecord,pvRequest,"");
+    PVStructurePtr pvMasterField = pvCopy->getPVMaster();
+    if(debug) {
+        cout << "PV structure from record" << endl << *pvStructureRecord << endl;
+        cout << "Master PV structure from copy" << endl << *pvMasterField << endl;
+        cout << "Master PV structure from copy offset " << pvMasterField->getFieldOffset() << endl;
+    }
+    testOk1(pvCopy->isMasterFieldRequested());
+    testOk1(pvMasterField->getNumberFields() == pvStructureRecord->getNumberFields());
+    testOk1(pvMasterField->getFieldOffset() == 0);
+    PVStructurePtr pvStructureCopy = pvCopy->createPVStructure();
+    BitSetPtr bitSet = BitSetPtr(new BitSet(pvStructureCopy->getNumberFields()));
+    pvCopy->initCopy(pvStructureCopy, bitSet);
+    if(debug) {
+        cout << "PV structure from copy" << endl << *pvStructureCopy << endl;
+        cout << "PV structure from copy offset " << pvStructureCopy->getFieldOffset() << endl;
+    }
+    testOk1(pvMasterField->getNumberFields() == pvStructureCopy->getNumberFields());
+}
+
 static void scalarTest()
 {
     if(debug) {cout << endl << endl << "****scalarTest****" << endl;}
@@ -393,11 +421,21 @@ static void powerSupplyTest()
     testPVScalar(valueNameRecord,valueNameCopy,pvRecord,pvCopy);
 }
 
+static void masterFieldTest()
+{
+    if(debug) {
+        cout << endl << endl << "****masterFieldTest****" << endl;
+    }
+    PVRecordPtr pvRecord = createScalar("doubleRecord",pvDouble,"alarm,timeStamp,display");
+    testMasterField(pvRecord);
+}
+
 MAIN(testPVCopy)
 {
-    testPlan(67);
+    testPlan(71);
     scalarTest();
     arrayTest();
     powerSupplyTest();
+    masterFieldTest();
     return 0;
 }

test/src/testPlugin.cpp

@@ -332,14 +332,128 @@ static void ignoreTest()
     testOk1(nset==3);
 }
 
+static void debugOutput(const string& what, bool result, uint32 nSet, BitSetPtr bitSet, PVStructurePtr pvStructureCopy)
+{
+    if(debug) {
+        cout << what
+             << " result " << (result ? "true" : "false")
+             << " nSet " << nSet
+             << " bitSet " << *bitSet
+             << "\n pvStructureCopy\n" << pvStructureCopy
+             << "\n";
+    }
+}
+
+static void dataDistributorTest()
+{
+    if(debug) {cout << endl << endl << "****dataDistributorTest****" << endl;}
+    bool result = false;
+    uint32 nSet = 0;
+
+    // Create test structure
+    PVStructurePtr pvRecordStructure(getStandardPVField()->scalar(pvInt,""));
+    PVIntPtr pvValue(pvRecordStructure->getSubField<PVInt>("value"));
+    PVRecordPtr pvRecord(PVRecord::create("intRecord",pvRecordStructure));
+    if(debug) {
+        cout << " pvRecordStructure\n" << pvRecordStructure
+             << "\n";
+    }
+
+    // Request distributor plugin with trigger field value
+    PVStructurePtr pvRequest(CreateRequest::create()->createRequest("_[distributor=trigger:value]"));
+
+    // Create clients
+    PVCopyPtr pvCopy1(PVCopy::create(pvRecordStructure,pvRequest,""));
+    PVStructurePtr pvStructureCopy1(pvCopy1->createPVStructure());
+    BitSetPtr bitSet1(new BitSet(pvStructureCopy1->getNumberFields()));
+
+    PVCopyPtr pvCopy2(PVCopy::create(pvRecordStructure,pvRequest,""));
+    PVStructurePtr pvStructureCopy2(pvCopy2->createPVStructure());
+    BitSetPtr bitSet2(new BitSet(pvStructureCopy2->getNumberFields()));
+
+    // Update 0: both clients get it
+    result = pvCopy1->updateCopySetBitSet(pvStructureCopy1,bitSet1);
+    nSet = bitSet1->cardinality();
+    debugOutput("client 1: update 0", result, nSet, bitSet1, pvStructureCopy1);
+    testOk1(result==true);
+    testOk1(nSet==1);
+
+    result = pvCopy2->updateCopySetBitSet(pvStructureCopy2,bitSet2);
+    nSet = bitSet2->cardinality();
+    debugOutput("client 2: update 0", result, nSet, bitSet2, pvStructureCopy2);
+    testOk1(result==true);
+    testOk1(nSet==1);
+
+    // Update 1: only client 1 gets it
+    pvValue->put(1);
+
+    result = pvCopy1->updateCopySetBitSet(pvStructureCopy1,bitSet1);
+    nSet = bitSet1->cardinality();
+    debugOutput("client 1: update 1", result, nSet, bitSet1, pvStructureCopy1);
+    testOk1(result==true);
+    testOk1(nSet==1);
+
+    result = pvCopy2->updateCopySetBitSet(pvStructureCopy2,bitSet2);
+    nSet = bitSet2->cardinality();
+    debugOutput("client 2: update 1", result, nSet, bitSet2, pvStructureCopy2);
+    testOk1(result==false);
+    testOk1(nSet==0);
+
+    // Update 2: only client 2 gets it
+    pvValue->put(2);
+
+    result = pvCopy1->updateCopySetBitSet(pvStructureCopy1,bitSet1);
+    nSet = bitSet1->cardinality();
+    debugOutput("client 1: update 2", result, nSet, bitSet1, pvStructureCopy1);
+    testOk1(result==false);
+    testOk1(nSet==0);
+
+    result = pvCopy2->updateCopySetBitSet(pvStructureCopy2,bitSet2);
+    nSet = bitSet2->cardinality();
+    debugOutput("client 2: update 2", result, nSet, bitSet2, pvStructureCopy2);
+    testOk1(result==true);
+    testOk1(nSet==1);
+
+    // Update 3: only client 1 gets it
+    pvValue->put(3);
+
+    result = pvCopy1->updateCopySetBitSet(pvStructureCopy1,bitSet1);
+    nSet = bitSet1->cardinality();
+    debugOutput("client 1: update 3", result, nSet, bitSet1, pvStructureCopy1);
+    testOk1(result==true);
+    testOk1(nSet==1);
+
+    result = pvCopy2->updateCopySetBitSet(pvStructureCopy2,bitSet2);
+    nSet = bitSet2->cardinality();
+    debugOutput("client 2: update 3", result, nSet, bitSet2, pvStructureCopy2);
+    testOk1(result==false);
+    testOk1(nSet==0);
+
+    // Update 4: only client 2 gets it
+    pvValue->put(4);
+
+    result = pvCopy1->updateCopySetBitSet(pvStructureCopy1,bitSet1);
+    nSet = bitSet1->cardinality();
+    debugOutput("client 1: update 4", result, nSet, bitSet1, pvStructureCopy1);
+    testOk1(result==false);
+    testOk1(nSet==0);
+
+    result = pvCopy2->updateCopySetBitSet(pvStructureCopy2,bitSet2);
+    nSet = bitSet2->cardinality();
+    debugOutput("client 2: update 4", result, nSet, bitSet2, pvStructureCopy2);
+    testOk1(result==true);
+    testOk1(nSet==1);
+}
+
 MAIN(testPlugin)
 {
-    testPlan(26);
+    testPlan(46);
     PVDatabasePtr pvDatabase(PVDatabase::getMaster());
     deadbandTest();
     arrayTest();
     unionArrayTest();
     timeStampTest();
     ignoreTest();
+    dataDistributorTest();
     return 0;
 }