1.3.1

pvalink: missing NULL check
pdb: Create db_field_log for GETs
2021-06-30 10:05:36 -07:00 · 2021-04-23 15:29:45 -07:00 · 2021-03-17 13:22:42 -07:00 · 2021-03-17 13:22:42 -07:00 · 2021-03-17 12:47:34 -07:00 · 2021-03-12 11:45:13 -08:00
78 changed files with 7676 additions and 2113 deletions
@@ -0,0 +1,103 @@
+# .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
+
+#---------------------------------#
+#       additional packages       #
+#---------------------------------#
+
+install:
+# for the sequencer
+  - cinst re2c
+  - cmd: git submodule update --init --recursive
+
+#---------------------------------#
+#       repository cloning        #
+#---------------------------------#
+
+init:
+  # Set autocrlf to make batch files work
+  - git config --global core.autocrlf true
+
+clone_depth: 50
+
+# Skipping commits affecting only specific files
+skip_commits:
+  files:
+    - 'documentation/*'
+    - '**/*.md'
+    - '.github/**'
+
+# Build Configurations: dll/static, regular/debug
+configuration:
+  - dynamic
+  - static
+  - dynamic-debug
+  - static-debug
+
+# Environment variables: compiler toolchain, base version, setup file, ...
+environment:
+  # common / default variables for all jobs
+  SETUP_PATH: .ci-local:.ci
+
+  matrix:
+  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    CMP: vs2019
+    BASE: 7.0
+  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    CMP: gcc
+    BASE: 7.0
+  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+    CMP: vs2017
+    BASE: 7.0
+  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    CMP: vs2019
+    BASE: 3.15
+
+# Platform: processor architecture
+platform:
+  - x64
+
+#---------------------------------#
+#     building & testing          #
+#---------------------------------#
+
+build_script:
+  - cmd: python .ci/cue.py prepare
+  - cmd: python .ci/cue.py build
+
+test_script:
+  - cmd: python .ci/cue.py test
+
+on_finish:
+  - ps: Get-ChildItem *.tap -Recurse -Force | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
+  - cmd: python .ci/cue.py build test-results -s
+
+#---------------------------------#
+#         debugging               #
+#---------------------------------#
+
+## if you want to connect by remote desktop to a failed build, uncomment these lines
+## note that you will need to connect within the usual build timeout limit (60 minutes)
+## so you may want to adjust the build matrix above to just build the one of interest
+
+#on_failure:
+#  - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+#  - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+
+#---------------------------------#
+#         notifications           #
+#---------------------------------#
+
+notifications:
+
+  - provider: Email
+    to:
+      - core-talk@aps.anl.gov
+    on_build_success: false
+
+  - provider: GitHubPullRequest
@@ -0,0 +1,14 @@
+# EPICS Base
+BASE_DIRNAME=base
+BASE_REPONAME=epics-base
+BASE_REPOOWNER=epics-base
+BASE_VARNAME=EPICS_BASE
+BASE_RECURSIVE=NO
+
+MODULES=PVDATA PVACCESS
+
+PVDATA_REPONAME=pvDataCPP
+PVDATA_REPOOWNER=epics-base
+
+PVACCESS_REPONAME=pvAccessCPP
+PVACCESS_REPOOWNER=epics-base
@@ -1,20 +0,0 @@
-#!/bin/sh
-set -e -x
-
-# set RTEMS to eg. "4.9" or "4.10"
-# requires qemu, bison, flex, texinfo, install-info
-if [ -n "$RTEMS" ]
-then
-  # find local qemu-system-i386
-  echo -n "Using QEMU: "
-  type qemu-system-i386 || echo "Missing qemu"
-  EXTRA=RTEMS_QEMU_FIXUPS=YES
-fi
-
-make -j2 $EXTRA
-
-if [ "$TEST" != "NO" ]
-then
-  make tapfiles
-  make -s test-results
-fi
@@ -1,153 +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_base_module() {
-  MODULE=$1
-  BRANCH=$2
-  ( cd epics-base/modules && \
-  git clone --quiet --depth 5 --branch $MODULE/$BRANCH https://github.com/${REPOBASE:-epics-base}/epics-base.git $MODULE && \
-  cd $MODULE && git log -n1 )
-}
-
-add_gh_module() {
-  MODULE=$1
-  REPOOWNER=$2
-  REPONAME=$3
-  BRANCH=$4
-  ( cd epics-base/modules && \
-  git clone --quiet --depth 5 --branch $BRANCH https://github.com/$REPOOWNER/$REPONAME.git $MODULE && \
-  cd $MODULE && git log -n1 )
-}
-
-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
-}
-
-if [ "$BRBASE" ]
-then
-  git clone --quiet --depth 5 --branch "$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 ${BRPVA:-master}
-else
-  git clone --quiet --depth 5 --branch core/"${BRCORE:-master}" https://github.com/${REPOBASE:-epics-base}/epics-base.git epics-base
-  ( cd epics-base && git log -n1 )
-  add_base_module libcom "${BRLIBCOM:-master}"
-  add_base_module ca "${BRCA:-master}"
-  add_base_module database "${BRDATABASE:-master}"
-  add_gh_module pvData ${REPOPVD:-epics-base} pvDataCPP ${BRPVD:-master}
-  add_gh_module pvAccess ${REPOPVA:-epics-base} pvAccessCPP ${BRPVA:-master}
-fi
-
-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${RTEMS} for pc386"
-  install -d /home/travis/.cache
-  curl -L "https://github.com/mdavidsaver/rsb/releases/download/travis-20160306-2/rtems${RTEMS}-i386-trusty-20190306-2.tar.gz" \
-  | tar -C /home/travis/.cache -xj
-
-  sed -i -e '/^RTEMS_VERSION/d' -e '/^RTEMS_BASE/d' epics-base/configure/os/CONFIG_SITE.Common.RTEMS
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.Common.RTEMS
-RTEMS_VERSION=$RTEMS
-RTEMS_BASE=/home/travis/.cache/rtems${RTEMS}-i386
-EOF
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS+=RTEMS-pc386
-EOF
-
-  # find local qemu-system-i386
-  export PATH="$HOME/.cache/qemu/usr/bin:$PATH"
-  echo -n "Using QEMU: "
-  type qemu-system-i386 || echo "Missing qemu"
-  cat <<EOF >> epics-base/configure/CONFIG_SITE
-RTEMS_QEMU_FIXUPS=YES
-EOF
-fi
-
-make -j2 -C epics-base $EXTRA
-
-if [ "$BRBASE" ]
-then
-  make -j2 -C pvData $EXTRA
-  make -j2 -C pvAccess $EXTRA
-fi
-
-find epics-base/include
-find epics-base/lib
@@ -0,0 +1,179 @@
+# .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:
+      - .appveyor.yml
+  pull_request:
+
+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 }}
+      WINE: ${{ matrix.wine }}
+      RTEMS: ${{ matrix.rtems }}
+      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"
+            wine: "64"
+            name: "7.0 Ub-20 gcc-9 + MinGW"
+
+          - os: ubuntu-20.04
+            cmp: gcc
+            configuration: static
+            base: "7.0"
+            wine: "64"
+            name: "7.0 Ub-20 gcc-9 + MinGW, static"
+
+          - os: ubuntu-20.04
+            cmp: gcc
+            configuration: default
+            base: "3.15"
+            wine: "64"
+            name: "3.15 Ub-20 gcc-9 + MinGW"
+
+          - 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-16.04
+            cmp: clang
+            configuration: default
+            base: "7.0"
+            name: "7.0 Ub-16 clang-9"
+
+          - 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"
+            rtems: "4.10"
+            name: "7.0 Ub-20 gcc-9 + RT-4.10"
+
+          - os: ubuntu-20.04
+            cmp: gcc
+            configuration: default
+            base: "7.0"
+            rtems: "4.9"
+            name: "7.0 Ub-20 gcc-9 + RT-4.9"
+
+          - os: ubuntu-16.04
+            cmp: gcc-4.8
+            utoolchain: "4.8"
+            configuration: default
+            base: "7.0"
+            name: "7.0 Ub-16 gcc-4.8"
+
+          - os: ubuntu-16.04
+            cmp: gcc-4.9
+            utoolchain: "4.9"
+            configuration: default
+            base: "7.0"
+            name: "7.0 Ub-16 gcc-4.9"
+
+          - os: ubuntu-20.04
+            cmp: gcc-8
+            utoolchain: "8"
+            configuration: default
+            base: "7.0"
+            name: "7.0 Ub-20 gcc-8"
+
+          - os: ubuntu-20.04
+            cmp: clang
+            configuration: default
+            base: "7.0"
+            name: "7.0 Ub-20 clang-10"
+
+          - 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"
+
+          - os: windows-2019
+            cmp: vs2019
+            configuration: static
+            base: "7.0"
+            name: "7.0 Win2019 MSC-19, static"
+
+          - os: windows-2019
+            cmp: gcc
+            configuration: static
+            base: "7.0"
+            name: "7.0 Win2019 mingw, static"
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        submodules: true
+    - name: Cache Dependencies
+      uses: actions/cache@v2
+      with:
+        path: ~/.cache
+        key: ${{ matrix.base }}/${{ matrix.os }}/${{ matrix.cmp }}/${{ matrix.configuration }}/${{ matrix.wine }}${{ matrix.rtems }}/${{ matrix.extra }}/${{ hashFiles('.github/workflows/ci-scripts-build.yml') }}
+    - 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: "apt-get install gcc-${{ matrix.utoolchain }}"
+      run: |
+        sudo apt-get update
+        sudo apt-get -y install software-properties-common
+        sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+        sudo apt-get update
+        sudo apt-get -y install g++-${{ matrix.utoolchain }}
+      if: matrix.utoolchain
+    - 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 test
+    - name: Upload tapfiles Artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: tapfiles ${{ matrix.name }}
+        path: '**/O.*/*.tap'
+    - name: Collect and show test results
+      run: python .ci/cue.py test-results
@@ -0,0 +1,3 @@
+[submodule ".ci"]
+	path = .ci
+	url = https://github.com/epics-base/ci-scripts
@@ -0,0 +1,17 @@
+# .readthedocs.yml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Build documentation in the documentation/ directory with Sphinx
+sphinx:
+  configuration: documentation/conf.py
+
+# Build documentation with MkDocs
+#mkdocs:
+#  configuration: mkdocs.yml
+
+# Optionally build your docs in additional formats such as PDF and ePub
+formats: all
@@ -1,29 +0,0 @@
-sudo: false
-dist: trusty
-language: c++
-compiler:
-  - gcc
-addons:
-  apt:
-    packages:
-    - libreadline6-dev
-    - libncurses5-dev
-    - perl
-    - clang
-    - g++-mingw-w64-i686
-install:
- - ./.ci/travis-prepare.sh
-script:
- - ./.ci/travis-build.sh
-env:
- - BRCORE=master BRLIBCOM=master BRPVD=master BRPVA=master
- - CMPLR=clang
- - EXTRA="CMD_CXXFLAGS=-std=c++98"
- - EXTRA="CMD_CXXFLAGS=-std=c++11"
- - CMPLR=clang EXTRA="CMD_CXXFLAGS=-std=c++11"
- - WINE=32 TEST=NO STATIC=YES
- - WINE=32 TEST=NO STATIC=NO
- - RTEMS=4.10 TEST=NO
- - RTEMS=4.9 TEST=NO
- - BRBASE=3.16
- - BRBASE=3.15
@@ -1,3 +1,5 @@
+See main [documentation](https://epics-base.github.io/pva2pva/) page.
+
 This repository contains two distinct pieces of software.

 QSRV
@@ -19,28 +21,29 @@ p2p
 A PV Access gateway (aka proxy).
 The 'p2p' executable.

+The P2P gateway has been deprecated in favor of
+[p4p.gw](https://mdavidsaver.github.io/p4p/gw.html).
+
 Dependencies
 ------------

 - [epics-base](http://www.aps.anl.gov/epics/) >= 3.15.3
+- and
 - [pvDataCPP](http://epics-pvdata.sourceforge.net/)
 - [pvAccessCPP](http://epics-pvdata.sourceforge.net/)

+or bundled with
+
+- [epics-base](http://www.aps.anl.gov/epics/) >= 7.0.1
+
 Building
 --------

 To build all dependencies from source:

 ```sh
-git clone https://github.com/epics-base/epics-base.git
-git clone https://github.com/epics-base/pvDataCPP.git
-git clone https://github.com/epics-base/pvAccessCPP.git
-git clone https://github.com/mdavidsaver/pva2pva.git
-
+git clone --recursive https://github.com/epics-base/epics-base.git
 make -C epics-base
-make -C pvDataCPP
-make -C pvAccessCPP
-make -C pva2pva
 ```

 Running QSRV
@@ -109,9 +112,7 @@ At present each pva2pva process can act as a uni-directional proxy,
 presenting a pvAccess server on one interface,
 and a client on other(s).

-The file [example.cmd](example.cmd) provides a starting point.
-Adjust *EPICS_PVAS_INTF_ADDR_LIST* and *EPICS_PVA_ADDR_LIST*
-according to the host computer's network configuration.
+The file [loopback.conf](loopback.conf) provides a starting point.

 At present there are no safe guard against creating loops
 where a gateway client side connects to its own server side.
@@ -121,5 +122,5 @@ the interface used for the server (either directly, or included in a broadcast d

 ```
 cd pva2pva
-./bin/linux-x86_64/pva2pva example.cmd
+./bin/linux-x86_64/pva2pva loopback.conf
 ```
@@ -16,8 +16,6 @@
 #include "weakmap.h"
 #include "weakset.h"

-#include <shareLib.h>
-
 struct TestPV;
 struct TestPVChannel;
 struct TestPVMonitor;
@@ -1,9 +1,15 @@
 # Module (source) version
 EPICS_QSRV_MAJOR_VERSION = 1
-EPICS_QSRV_MINOR_VERSION = 0
+EPICS_QSRV_MINOR_VERSION = 3
 EPICS_QSRV_MAINTENANCE_VERSION = 1
-EPICS_QSRV_DEVELOPMENT_FLAG = 1

 # ABI version
 EPICS_QSRV_ABI_MAJOR_VERSION = 1
-EPICS_QSRV_ABI_MINOR_VERSION = 0
+EPICS_QSRV_ABI_MINOR_VERSION = 2
+
+# Development flag, set to zero for release versions
+
+EPICS_QSRV_DEVELOPMENT_FLAG = 0
+
+# Immediately after a release the MAINTENANCE_VERSION
+# will be incremented and the DEVELOPMENT_FLAG set to 1
@@ -38,5 +38,8 @@ CHECK_RELEASE = YES
 # we don't actually use 'rset' explicitly, but quiet some warnings
 USR_CPPFLAGS += -DUSE_TYPED_RSET

+# we use std::min()/max() and don't want conflicting MSVC defs
+USR_CPPFLAGS_WIN32 += -DNOMINMAX
+
 -include $(TOP)/../CONFIG_SITE.local
 -include $(TOP)/configure/CONFIG_SITE.local
@@ -38,7 +38,7 @@ PROJECT_NAME           = pva2pva
 # could be handy for archiving the generated documentation or if some version
 # control system is used.

-PROJECT_NUMBER         = 1.0.1-DEV
+PROJECT_NUMBER         = 1.3.1

 # 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
@@ -0,0 +1,7 @@
+.wy-side-nav-search {
+    background-color: #18334B;
+}
+
+.wy-side-nav-search input[type="text"] {
+    border-color: #18334b;
+}
@@ -0,0 +1,78 @@
+# Configuration file for the Sphinx documentation builder.
+#
+# This file only contains a selection of the most common options. For a full
+# list see the documentation:
+# http://www.sphinx-doc.org/en/master/config
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+# import os
+# import sys
+# sys.path.insert(0, os.path.abspath('.'))
+
+
+# -- Project information -----------------------------------------------------
+
+project = 'EPICS Documentation'
+copyright = '2019, EPICS Controls.'
+author = 'EPICS'
+
+
+# -- General configuration ---------------------------------------------------
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = [
+    'sphinx.ext.intersphinx',
+]
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This pattern also affects html_static_path and html_extra_path.
+exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
+
+# Intersphinx links to subprojects
+intersphinx_mapping = {
+    'how-tos': ('https://docs.epics-controls.org/projects/how-tos/en/latest', None),
+}
+
+
+# -- Options for HTML output -------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+html_theme = 'sphinx_rtd_theme'
+
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ['_static']
+
+html_css_files = [
+    'css/custom.css',
+]
+
+master_doc = 'index'
+
+html_theme_options = {
+    'logo_only': True,
+}
+html_logo = "images/EPICS_white_logo_v02.png"
+
+html_extra_path = ['../html']
+
+
+# -- Run Doxygen ------------------------------------------------------------
+
+import subprocess
+subprocess.call('cd ..; mkdir -p html/doxygen; doxygen', shell=True)
@@ -0,0 +1,16 @@
+pva2pva (QSRV / pvAccess Gateway)
+=================================
+
+.. toctree::
+   :hidden:
+
+   EPICS Website <https://epics-controls.org>
+   EPICS Documentation Home <https://docs.epics-controls.org>
+
+
+.. toctree::
+   :maxdepth: 1
+   :caption: pva2pva
+
+   Reference Manual and API Documentation <https://docs.epics-controls.org/projects/pva2pva/en/latest/doxygen>
+   Source Code Repository on GitHub <https://github.com/epics-base/pva2pva>
@@ -1,6 +1,7 @@
 /**
@mainpage pva2pva Home of QSRV and pvAccess 2 pvAccess gateway

+- [Source](https://github.com/epics-base/pva2pva)
 - [Download](https://sourceforge.net/projects/epics-pvdata/files/)

@section qsrv QSRV
@@ -10,7 +11,9 @@ runs inside an EPICS IOC process and allows clients
 to make requests to access the Process Variables (PVs)
 within.

-Documentation of @ref qsrv_config including @ref qsrv_group_def.
+Documentation of @ref qsrv_config including @ref qsrv_group_def ,
+@ref qsrv_aslib
+and @ref qsrv_link configuration.

 - @ref release_notes

@@ -0,0 +1,377 @@
+/**
+@page qsrv_page QSRV
+
+@section qsrv_config QSRV Configuration
+
+By default QSRV exposes all Process Variables (fields of process database records).
+In addition to these "single" PVs are special "group" PVs.
+
+@subsection qsrv_single Single PVs
+
+"single" PVs are the same set of names server by the Channel Access server (RSRV).
+This is all accessible record fields.
+So all data which is accessible via Channel Access is also accessible via PVAccess.
+
+QSRV presents all "single" PVs as Structures conforming to the
+Normative Types NTScalar, NTScalarArray, or NTEnum depending on the native DBF field type.
+
+@subsection qsrv_group_def Group PV definitions
+
+A group is defined using a JSON syntax.
+Groups are defined with respect to a Group Name,
+which is also the PV name.
+So unlike records, the "field" of a group have a different meaning.
+Group field names are _not_ part of the PV name.
+
+A group definition may be split among several records,
+or included in separate JSON file(s).
+
+For example of a group including two records is:
+
+@code
+record(ai, "rec:X") {
+  info(Q:group, {
+    "grp:name": {
+        "X": {+channel:"VAL"}
+    }
+  })
+}
+record(ai, "rec:Y") {
+  info(Q:group, {
+    "grp:name": {
+        "Y": {+channel:"VAL"}
+    }
+  })
+}
+@endcode
+
+Or equivalently with separate .db file and .json files.
+
+@code
+# some .db
+record(ai, "rec:X") {}
+record(ai, "rec:Y") {}
+@endcode
+
+@code
+{
+    "grp:name": {
+        "X": {+channel:"VAL"},
+        "Y": {+channel:"VAL"}
+    }
+}
+@endcode
+
+This group, named "grp:name", has two fields "X" and "Y".
+
+@code
+$ pvget grp:name
+grp:name
+structure 
+    epics:nt/NTScalar:1.0 X
+        double value 0
+        alarm_t alarm INVALID DRIVER UDF
+        time_t timeStamp <undefined> 0
+...
+    epics:nt/NTScalar:1.0 Y
+        double value 0
+        alarm_t alarm INVALID DRIVER UDF
+        time_t timeStamp <undefined> 0
+...
+@endcode
+
+@subsection qsrv_group_ref Group PV reference
+
+@code
+record(...) {
+    info(Q:group, {
+        "<group_name>":{
+            +id:"some/NT:1.0",  # top level ID
+            +meta:"FLD",        # map top level alarm/timeStamp
+            +atomic:true,       # whether monitors default to multi-locking atomicity
+            "<field.name>":{
+                +type:"scalar", # controls how map VAL mapped onto <field.name>
+                +channel:"VAL",
+                +id:"some/NT:1.0",
+                +trigger:"*",   # "*" or comma seperated list of <field.name>s
+                +putorder:0,    # set for fields where put is allowed, processing done in increasing order
+            }
+        }
+    })
+}
+@endcode
+
+@subsubsection qsrv_group_map_types Field mapping types
+
+@li "scalar" or ""
+@li "plain"
+@li "any"
+@li "meta"
+@li "proc"
+
+The "scalar" mapping places an NTScalar or NTScalarArray as a sub-structure.
+
+The "plain" mapping ignores all meta-data and places only the "value" as a field.
+The "value" is equivalent to '.value' of the equivalent NTScalar/NTScalarArray as a field.
+
+The "any" mapping places a variant union into which the "value" is placed.
+
+The "meta" mapping ignores the "value" and places only the alarm and time
+meta-data as sub-fields.
+The special group level tag 'meta:""' allows these meta-data fields to be
+placed in the top-level structure.
+
+The "proc" mapping uses neither "value" nor meta-data.
+Instead the target record is processed during a put.
+
+@subsubsection qsrv_group_map_trig Field Update Triggers
+
+The field triggers define how changes to the consitutent field
+are translated into a subscription update to the group.
+
+The most use of these are "" which means that changes to the field
+are ignored, and do not result group update.
+And "*" which results in a group update containing the most recent
+values/meta-data of all fields.
+
+It may be useful to specify a comma seperated list of field names
+so that changes may partially update the group.
+
+@subsection qsrv_stamp QSRV Timestamp Options
+
+QSRV has the ability to perform certain transformations on the timestamp before transporting it.
+The mechanism for configuring this is the "Q:time:tag" info() tag.
+
+@subsubsection qsrv_stamp_nslsb Nano-seconds least significant bits
+
+Setting "Q:time:tag" to a value of "nsec:lsb:#", where # is a number between 0 and 32,
+will split the nanoseconds value stored in the associated record.
+The least significant # bits are stored in the 'timeStamp.userTag' field.
+While the remaining 32-# bits are stored in 'timeStamp.nanoseconds' (without shifting).
+
+For example, in the following situation 20 bits are split off into userTag.
+If the nanoseconds part of the record timestamp is 0x12345678,
+then the PVD structure would include "timeStamp.nanoseconds=0x12300000"
+and "timeStamp.userTag=0x45678".
+
+@code
+record(ai, "...") {
+  info(Q:time:tag, "nsec:lsb:20")
+}
+@endcode
+
+@subsection qsrv_form QSRV Display Form Option
+
+The value of the OPI display form hint ('display.form') can be set set with the "Q:form" info() tag.
+This hint, along with 'display.precision', is used by some OPI clients to control how values are rendered.
+
+The text value of the tag must be one of the following choices.
+
+@li Default
+@li String
+@li Binary
+@li Decimal
+@li Hex
+@li Exponential
+@li Engineering
+
+@code
+record(ai, "...") {
+  info(Q:form, "Default") # implied default
+}
+@endcode
+
+@subsection qsrv_aslib Access Security
+
+QSRV will enforce an optional access control policy file (.acf) loaded by the usual means (cf. asSetFilename() ).
+This policy is applied to both Single and Group PVs.  With Group PVs, restrictions are not defined for the group,
+but rather for the individual member records.  The same policy will be applied regardess of how a record
+is accessed (individually, or through a group).
+
+Policy application differs from CA (RSRV) in several ways:
+
+* Client hostname is always the numeric IP address.  HAG() entries must either contained numeric IP addresses,
+or that asCheckClientIP=1 flag must be set to translate hostnames into IPs on ACF file load (effects CA server as well).
+This prevents clients from trivially forging "hostname".
+* In additional to client usernames.  UAG definitions may contained items beginning with "role/" which are matched
+against the list of groups of which the client username is a member.  Username to group lookup is done internally
+to QSRV, and depends on IOC host authentication configuration.  Note that this is still based on the client provided
+username string.
+
+@code
+UAG(special) {
+  someone, "role/op"
+}
+@endcode
+
+The "special" UAG will match CA or PVA clients with the username "someone".
+It will also match a PVA client if the client provided username is a member
+of the "op" group (supported on POSIX targets and Windows).
+
+@subsection qsrv_link PVAccess Links
+
+When built against Base >= 3.16.1, support is enabled for PVAccess links,
+which are analogous to Channel Access (CA) links.  However, the syntax
+for PVA links is quite different.
+
+@note The "dbjlr" and "dbpvar" IOC shell command provide information about PVA links in a running IOC.
+
+A simple configuration using defaults is
+
+@code
+record(longin, "tgt") {}
+record(longin, "src") {
+    field(INP, {pva:"tgt"})
+}
+@endcode
+
+This is a shorthand for
+
+@code
+record(longin, "tgt") {}
+record(longin, "src") {
+    field(INP, {pva:{pv:"tgt"}})
+}
+@endcode
+
+Some additional keys (beyond "pv") may be used.
+Defaults are shown below:
+
+@code
+record(longin, "tgt") {}
+record(longin, "src") {
+    field(INP, {pva:{
+        pv:"tgt",
+        field:"",   # may be a sub-field
+        local:false,# Require local PV
+        Q:4,        # monitor queue depth
+        pipeline:false, # require that server uses monitor flow control protocol
+        proc:none,  # Request record processing (side-effects).
+        sevr:false, # Maximize severity.
+        time:false, # set record time during getValue
+        monorder:0, # Order of record processing as a result of CP and CPP
+        retry:false,# allow Put while disconnected.
+        always:false,# CP/CPP input link process even when .value field hasn't changed
+        defer:false # Defer put
+    }})
+}
+@endcode
+
+@subsubsection qsrv_link_pv pv: Target PV name
+
+The PV name to search for.
+This is the same name which could be used with 'pvget' or other client tools.
+
+@subsubsection qsrv_link_field field: Structure field name
+
+The name of a sub-field of the remotely provided Structure.
+By default, an empty string "" uses the top-level Structure.
+
+If the top level structure, or a sub-structure is selected, then
+it is expeccted to conform to NTScalar, NTScalarArray, or NTEnum
+to extract value and meta-data.
+
+If the sub-field is an PVScalar or PVScalarArray, then a value
+will be taken from it, but not meta-data will be available.
+
+@todo Ability to traverse through unions and into structure arrays (as with group mappings).
+
+@subsubsection qsrv_link_local local: Require local PV
+
+When true, link will not connect unless the named PV is provided by the local (QSRV) data provider.
+
+@subsubsection qsrv_link_Q Q: Monitor queue depth
+
+Requests a certain monitor queue depth.
+The server may, or may not, take this into consideration when selecting
+a queue depth.
+
+@subsubsection qsrv_link_pipeline pipeline: Monitor flow control
+
+Expect that the server supports PVA monitor flow control.
+If not, then the subscription will stall (ick.)
+
+@subsubsection qsrv_link_proc proc: Request record processing (side-effects)
+
+The meaning of this option depends on the direction of the link.
+
+For output links, this option allows a request for remote processing (side-effects).
+
+@li none (default) - Make no special request.  Uses a server specific default.
+@li false, "NPP" - Request to skip processing.
+@li true, "PP" - Request to force processing.
+@li "CP", "CPP" - For output links, an alias for "PP".
+
+For input links, this option controls whether the record containing
+the PVA link will be processed when subscription events are received.
+
+@li none (default), false, "NPP" - Do not process on subscription updates.
+@li true, "CP" - Always process on subscription updates.
+@li "PP", "CPP" - Process on subscription updates if SCAN=Passive
+
+@subsubsection qsrv_link_sevr sevr: Alarm propagation
+
+This option controls whether reading a value from an input PVA link
+has the addition effect of propagating any alarm via the Maximize
+Severity process.
+
+@li false - Do not maximize severity.
+@li true - Maximize alarm severity
+@li "MSI" - Maximize only if the remote severity is INVALID.
+
+@subsubsection qsrv_link_time time: Time propagation
+
+Somewhat analogous to sevr: applied to timestamp.
+When true, the record TIME field is updated when the link value is read.
+
+@warning TSEL must be set to -2 for time:true to have an effect.
+
+@subsubsection qsrv_link_monorder monorder: Monitor processing order
+
+When multiple record target the same target PV, and request processing
+on subscription updates.  This option allows the order of processing
+to be specified.
+
+Record are processed in increasing order.
+monorder=-1 is processed before monorder=0.
+Both are processed before monorder=1.
+
+@subsubsection qsrv_link_defer defer: Defer put
+
+By default (defer=false) an output link will immediately
+start a PVA Put operation.  defer=true will store the
+new value in an internal cache, but not start a PVA Put.
+
+This option, in combination with field: allows a single
+Put to contain updates to multiple sub-fields.
+
+
+@subsubsection qsrv_link_retry retry: Put while disconnected
+
+Allow a Put operation to be queued while the link is disconnected.
+The Put will be executed when the link becomes connected.
+
+@subsubsection qsrv_link_always always: CP/CPP always process
+
+By default (always:false) a subscription update will only cause a CP input link
+to scan if the structure field (cf. field: option) is marked as changed.
+Set to true to override this, and always process the link.
+
+@subsubsection qsrv_link_sem Link semantics/behavior
+
+This section attempts to answer some questions about how links behave in certain situations.
+
+Links are evaluated in three basic contexts.
+
+@li dbPutLink()/dbScanFwdLink()
+@li dbGetLink() of non-CP link
+@li dbGetLink() during a scan resulting from a CP link.
+
+An input link can bring in a Value as well as meta-data, alarm, time, and display/control info.
+For input links, the PVA link engine attempts to always maintain consistency between Value, alarm, and time.
+However, consistency between these, and the display/control info is only ensured during a CP scan.
+
+
+
+
+*/
@@ -1,144 +0,0 @@
-/**
-@page qsrv_page QSRV
-
-@section qsrv_config QSRV Configuration
-
-By default QSRV exposes all Process Variables (fields of process database records).
-In addition to these "single" PVs are special "group" PVs.
-
-@subsection qsrv_single Single PVs
-
-"single" PVs are the same set of names server by the Channel Access server (RSRV).
-This is all accessible record fields.
-So all data which is accessible via Channel Access is also accessible via PVAccess.
-
-QSRV presents all "single" PVs as Structures conforming to the
-Normative Types NTScalar, NTScalarArray, or NTEnum depending on the native DBF field type.
-
-@subsection qsrv_group_def Group PV definitions
-
-A group is defined using a JSON syntax.
-Groups are defined with respect to a Group Name,
-which is also the PV name.
-So unlike records, the "field" of a group have a different meaning.
-Group field names are _not_ part of the PV name.
-
-A group definition is split among several records.
-For example of a group including two records is:
-
-@code
-record(ai, "rec:X") {
-  info(Q:group, {
-    "grp:name": {
-        "X": {+channel:"VAL"}
-    }
-  })
-}
-record(ai, "rec:Y") {
-  info(Q:group, {
-    "grp:name": {
-        "Y": {+channel:"VAL"}
-    }
-  })
-}
-@endcode
-
-This group, named "grp:name", has two fields "X" and "Y".
-
-@code
-$ pvget grp:name
-grp:name
-structure 
-    epics:nt/NTScalar:1.0 X
-        double value 0
-        alarm_t alarm INVALID DRIVER UDF
-        time_t timeStamp <undefined> 0
-...
-    epics:nt/NTScalar:1.0 Y
-        double value 0
-        alarm_t alarm INVALID DRIVER UDF
-        time_t timeStamp <undefined> 0
-...
-@endcode
-
-@subsection qsrv_group_ref Group PV reference
-
-@code
-record(...) {
-    info(Q:group, {
-        "<group_name>":{
-            +id:"some/NT:1.0",  # top level ID
-            +meta:"FLD",        # map top level alarm/timeStamp
-            +atomic:true,       # whether monitors default to multi-locking atomicity
-            "<field.name>":{
-                +type:"scalar", # controls how map VAL mapped onto <field.name>
-                +channel:"VAL",
-                +id:"some/NT:1.0",
-                +trigger:"*",   # "*" or comma seperated list of <field.name>s
-                +putorder:0,    # set for fields where put is allowed, processing done in increasing order
-            }
-        }
-    })
-}
-@endcode
-
-@subsubsection qsrv_group_map_types Field mapping types
-
-@li "scalar" or ""
-@li "plain"
-@li "any"
-@li "meta"
-@li "proc"
-
-The "scalar" mapping places an NTScalar or NTScalarArray as a sub-structure.
-
-The "plain" mapping ignores all meta-data and places only the "value" as a field.
-The "value" is equivalent to '.value' of the equivalent NTScalar/NTScalarArray as a field.
-
-The "any" mapping places a variant union into which the "value" is placed.
-
-The "meta" mapping ignores the "value" and places only the alarm and time
-meta-data as sub-fields.
-The special group level tag 'meta:""' allows these meta-data fields to be
-placed in the top-level structure.
-
-The "proc" mapping uses neither "value" nor meta-data.
-Instead the target record is processed during a put.
-
-@subsubsection qsrv_group_map_trig Field Update Triggers
-
-The field triggers define how changes to the consitutent field
-are translated into a subscription update to the group.
-
-The most use of these are "" which means that changes to the field
-are ignored, and do not result group update.
-And "*" which results in a group update containing the most recent
-values/meta-data of all fields.
-
-It may be useful to specify a comma seperated list of field names
-so that changes may partially update the group.
-
-@subsection qsrv_stamp QSRV Timestamp Options
-
-QSRV has the ability to perform certain transformations on the timestamp before transporting it.
-The mechanism for configuring this is the "Q:time:tag" info() tag.
-
-@subsubsection qsrv_stamp_nslsb Nano-seconds least significant bits
-
-Setting "Q:time:tag" to a value of "nsec:lsb:#", where # is a number between 0 and 32,
-will split the nanoseconds value stored in the associated record.
-The least significant # bits are stored in the 'timeStamp.userTag' field.
-While the remaining 32-# bits are stored in 'timeStamp.nanoseconds' (without shifting).
-
-For example, in the following situation 16 bits are split off.
-If the nanoseconds part of the record timestamp is 0x12345678,
-then the PVD structure would include "timeStamp.nanoseconds=0x12300000"
-and "timeStamp.userTag=0x45678".
-
-@code
-record(ai, "...") {
-  info(Q:time:tag, "nsec:lsb:20")
-}
-@endcode
-
-*/
@@ -0,0 +1,81 @@
+/**
+
+@page release_notes Release Notes
+
+Release 1.3.1 (June 2021)
+=========================
+
+- Bug Fixes
+ - Correct handling for server side filters.
+- Changes
+ - Syncing softMain.cpp with epics-base
+
+Release 1.3.0 (Feb 2021)
+========================
+
+- Changes
+ - Add dbLoadGroup() iocsh function to read group JSON definitions
+   from a file.  Mappings in files must refer to full record names
+   instead of fields.  eg. 'recname.VAL' instead of 'VAL'.
+
+Release 1.2.4 (July 2020)
+=========================
+
+- Bug Fixes
+  - Fix stalled monitor when server side filter drops initial DBE_PROPERTY update.
+  - Respect DISP
+- Changes
+  - Refreshed softIocPVA to match options in Base.
+
+Release 1.2.3 (May 2020)
+========================
+
+- P2P gateway deprecated in favor of https://mdavidsaver.github.io/p4p/gw.html
+
+Release 1.2.2 (Nov 2019)
+========================
+
+- Changes
+  - Enforce Access Security policy.
+  - NTEnum .value field add missing "enum_t" type ID string.
+
+Release 1.2.1 (July 2019)
+=========================
+
+- Fixes
+  - Fix unittest: testpvalink.  No functional change.
+
+Release 1.2.0 (Mar 2019)
+========================
+
+- Incompatible changes
+  - The field 'display.format' is replaced with 'display.form' and 'display.precision'.
+    https://github.com/epics-base/pva2pva/issues/19
+- Additions
+  - Use @code info(Q:form, "...") @endcode to set 'display.form'.  See @ref qsrv_form
+- Fixes
+  - Correct handling of 64-bit integer fields.
+  - Install a copy of softIocExit.db for standalone builds
+
+Release 1.1.0 (Nov 2018)
+==========================
+
+- Incompatible changes
+  - Requires pvDataCPP >= 7.1.0
+  - Requires pvAccessCPP >= 6.1.0
+- Removals
+  - Drop the broken ioccircle and ioccircle2 examples.
+- Fixes
+  - Fix QSRV monitor locking causing crash
+  - Fix Windows DLL import/export errors
+  - Correctly handle empty "scalar" case of NELM=1, NORD=0.
+- Additions
+  - QSRV implement channelList() (aka. 'pvlist') with list of record and group names.
+  - @ref qsrv_link type (requires Base >= 3.16.1)
+
+Release 1.0.0 (Dec 2017)
+========================
+
+Initial Release
+
+*/
@@ -1,23 +0,0 @@
-/**
-
-@page release_notes Release Notes
-
-Release 1.1.0 (UNRELEASED)
-==========================
-
- Incompatible changes
- - Requires pvDataCPP >= 7.1.0-pre1
- - Requires pvAccessCPP >= 6.1.0-pre1
- Removals
- - Drop the broken ioccircle and ioccircle2 examples.
- Fixes
- - Fix QSRV monitor locking causing crash
- - Fix Windows DLL import/export errors
- - Correctly handle empty "scalar" case of NELM=1, NORD=0.
- Additions
- - QSRV implement channelList() (aka. 'pvlist') with list of record and group names.
-
-Release 1.0.0 (Dec 2017)
-========================
-
-Initial Release
@@ -1,26 +0,0 @@
-# Bind gateway server side to this interface
-epicsEnvSet("EPICS_PVAS_INTF_ADDR_LIST","10.0.1.200")
-
-# Gateway client side searches here.  Must not include gateway server side interface
-epicsEnvSet("EPICS_PVA_ADDR_LIST", "10.1.1.255")
-# Prevent gateway client from automatically populating the address list,
-# which would include the gateway server side interface
-epicsEnvSet("EPICS_PVA_AUTO_ADDR_LIST","NO")
-
-gwstart()
-
-# PVA variables
-#
-# Server side
-#
-# EPICS_PVAS_INTF_ADDR_LIST - Bind to this interface for both UDP and TCP
-# EPICS_PVAS_SERVER_PORT - default TCP port
-# EPICS_PVAS_BROADCAST_PORT - Listen for searches on this port
-#
-# EPICS_PVA_SERVER_PORT - Unused if EPICS_PVAS_SERVER_PORT set
-#
-# Client side
-#
-# EPICS_PVA_BROADCAST_PORT - Default search port for *ADDR_LIST
-# EPICS_PVA_ADDR_LIST - Space seperated list of search endpoints (bcast or unicast)
-# EPICS_PVA_AUTO_ADDR_LIST - YES/NO whether to populate ADDR_LIST with all local interface bcast addrs
@@ -0,0 +1,5 @@
+TOP = ../..
+include $(TOP)/configure/CONFIG
+ARCH = linux-x86_64-debug
+TARGETS = envPaths
+include $(TOP)/configure/RULES.ioc
@@ -0,0 +1,5 @@
+IOC for testing PVA links
+
+Primary test is st.cmd.  st2.cmd is run/stopped concurrently
+to test remote connect/disconnect.  st2a.cmd to test type
+change.
@@ -0,0 +1,106 @@
+record(ai, "$(P)target") {}
+
+# local input link shorthand
+record(longin, "$(P)inp1") {
+    field(INP , {pva:"$(P)target"})
+    alias("$(P)inp1:alias")
+}
+
+# local input link longhand
+record(longin, "$(P)inp2") {
+    field(INP , {pva:{pv:"$(P)target"}})
+}
+
+# remote input link
+record(longin, "$(P)inp3") {
+    field(INP , {pva:"invalid:pv:name"})
+}
+
+# null like (requires local, but not local)
+record(longin, "$(P)inp4") {
+    field(INP , {pva:{pv:"invalid:pv:name", local:true}})
+}
+
+# local input link w/ CP (process on update)
+record(calc, "$(P)cnt") {
+    field(SCAN, "1 second")
+    field(INPA, "$(P)cnt")
+    field(INPB, "9")
+    field(CALC, "A<B?A+1:0")
+    field(HIGH, "7")
+    field(HSV , "MAJOR")
+}
+record(longin, "$(P)track") {
+    field(INP , {pva:{
+                    pv:"$(P)cnt",
+                    proc:"CP",
+                    sevr:true,
+                    time:true
+                    }})
+    field(TSE, "-2")
+}
+
+# remote input link w/ CP (process on update)
+record(longin, "$(P)track2") {
+    field(INP , {pva:{
+                    pv:"$(P)cnt:rmt",
+                    proc:"CP",
+                    sevr:true,
+                    time:true
+                    }})
+    field(TSE, "-2")
+}
+
+
+# local output link
+record(longout, "$(P)out1") {
+    field(OUT , {pva:{pv:"$(P)out:tgt"}})
+    field(TPRO, "1")
+}
+record(longout, "$(P)out:tgt") {
+    field(TPRO, "1")
+}
+
+# remote output link
+record(longout, "$(P)out2") {
+    field(OUT , {pva:{pv:"$(P)out:rmt"}})
+    field(TPRO, "1")
+}
+
+# remote output link w/ retry (queue put while disconnected)
+record(longout, "$(P)out3") {
+    field(OUT , {pva:{pv:"$(P)out:rmt", retry:true}})
+    field(TPRO, "1")
+    #info(base:lsetDebug, "YES")
+}
+
+
+# output link to waveform
+record(aao, "$(P)out4:wf") {
+    field(FTVL, "DOUBLE")
+    field(NELM, "10")
+    field(OUT , {pva:{pv:"$(P)target:wf"}})
+}
+
+# input link to waveform
+record(aao, "$(P)target:wf") {
+    field(FTVL, "DOUBLE")
+    field(NELM, "10")
+}
+
+record(aai, "$(P)inp5:wf") {
+    field(FTVL, "DOUBLE")
+    field(NELM, "10")
+    field(INP , {pva:{pv:"$(P)target:wf"}})
+}
+
+
+# test forward link
+record(calc, "$(P)fcnt1") {
+    field(CALC, "VAL+1")
+    field(FLNK, {pva:{pv:"$(P)fcnt2"}})
+    info(base:lsetDebug, "YES")
+}
+record(calc, "$(P)fcnt2") {
+    field(CALC, "VAL+1")
+}
@@ -0,0 +1,14 @@
+# use with pvalink.db, run in a second IOC
+
+record(calc, "$(P)cnt:rmt") {
+    field(SCAN, "1 second")
+    field(INPA, "$(P)cnt")
+    field(INPB, "9")
+    field(CALC, "A<B?A+0.1:0")
+    field(HIGH, "7")
+    field(HSV , "MAJOR")
+}
+
+record(longout, "$(P)out:rmt") {
+    field(TPRO, "1")
+}
@@ -0,0 +1,18 @@
+# use with pvalink.db, run in a second IOC
+#  use instead of pvalink2.db to cause a type change
+
+record(calcout, "$(P)cnt:rmtx") {
+    field(SCAN, "1 second")
+    field(OUT , "$(P)cnt:rmt PP")
+    field(INPA, "$(P)cnt")
+    field(INPB, "9")
+    field(CALC, "A<B?A+1:0")
+    field(HIGH, "7")
+    field(HSV , "MAJOR")
+}
+
+record(longin, "$(P)cnt:rmt") {}
+
+record(stringout, "$(P)out:rmt") {
+    field(TPRO, "1")
+}
@@ -0,0 +1,5 @@
+#!../../bin/linux-x86_64-debug/softIocPVA
+
+dbLoadRecords("pvalink.db","P=TST:")
+
+iocInit()
@@ -0,0 +1,5 @@
+#!../../bin/linux-x86_64-debug/softIocPVA
+
+dbLoadRecords("pvalink2.db","P=TST:")
+
+iocInit()
@@ -0,0 +1,5 @@
+#!../../bin/linux-x86_64-debug/softIocPVA
+
+dbLoadRecords("pvalink2a.db","P=TST:")
+
+iocInit()
@@ -14,6 +14,7 @@
 */
 {
    "version":1,
+    "readOnly":false,
    "clients":[
        {
            "name":"theclient",
@@ -29,6 +30,8 @@
            "name":"theserver",
            "clients":["theclient"],
            "interface":"127.0.0.1",
+            "addrlist":"127.255.255.255",
+            "autoaddrlist":false,
            "serverport":5075,
            "bcastport":5076
        }
@@ -14,8 +14,6 @@
 #include "weakmap.h"
 #include "weakset.h"

-#include <shareLib.h>
-
 struct ChannelCache;
 struct ChannelCacheEntry;
 struct MonitorUser;
@@ -3,8 +3,6 @@

 #include <pv/pvAccess.h>

-#include <shareLib.h>
-
 #include "chancache.h"

 struct GWChannel : public epics::pvAccess::Channel
@@ -13,6 +13,7 @@
 #include <epicsGetopt.h>
 #include <iocsh.h>
 #include <epicsTimer.h>
+#include <libComRegister.h>

 #include <pv/json.h>

@@ -23,16 +24,21 @@
 #include <pv/reftrack.h>
 #include <pv/iocreftrack.h>
 #include <pv/iocshelper.h>
+#include <pv/logger.h>

 #include "server.h"
+#include "pva2pva.h"

 namespace pvd = epics::pvData;
 namespace pva = epics::pvAccess;

+extern int p2pReadOnly;
+
 namespace {

 pvd::StructureConstPtr schema(pvd::getFieldCreate()->createFieldBuilder()
                              ->add("version", pvd::pvUInt)
+                              ->add("readOnly", pvd::pvBoolean)
                              ->addNestedStructureArray("clients")
                                 ->add("name", pvd::pvString)
                                 ->add("provider", pvd::pvString)
@@ -45,6 +51,8 @@ pvd::StructureConstPtr schema(pvd::getFieldCreate()->createFieldBuilder()
                                 ->add("name", pvd::pvString)
                                 ->addArray("clients", pvd::pvString)
                                 ->add("interface", pvd::pvString)
+                                 ->add("addrlist", pvd::pvString)
+                                 ->add("autoaddrlist", pvd::pvBoolean)
                                 ->add("serverport", pvd::pvUShort)
                                 ->add("bcastport", pvd::pvUShort)
                                 ->add("control_prefix", pvd::pvString)
@@ -62,9 +70,12 @@ void getargs(ServerConfig& arg, int argc, char *argv[])
    int opt;
    bool checkonly = false;

-    while( (opt=getopt(argc, argv, "vhiIC"))!=-1)
+    while( (opt=getopt(argc, argv, "qvhiIC"))!=-1)
    {
        switch(opt) {
+        case 'q':
+            arg.debug--;
+            break;
        case 'v':
            arg.debug++;
            break;
@@ -95,6 +106,8 @@ void getargs(ServerConfig& arg, int argc, char *argv[])
    std::ifstream strm(argv[optind]);
    pvd::parseJSON(strm, arg.conf);

+    p2pReadOnly = arg.conf->getSubFieldT<pvd::PVScalar>("readOnly")->getAs<pvd::boolean>();
+
    unsigned version = arg.conf->getSubFieldT<pvd::PVUInt>("version")->get();
    if(version==0) {
        std::cerr<<"Warning: config file missing \"version\" key.  Assuming 1\n";
@@ -117,15 +130,19 @@ void getargs(ServerConfig& arg, int argc, char *argv[])
    }
 }

-GWServerChannelProvider::shared_pointer configure_client(const pvd::PVStructurePtr& conf)
+GWServerChannelProvider::shared_pointer configure_client(ServerConfig& arg, const pvd::PVStructurePtr& conf)
 {
+    std::string name(conf->getSubFieldT<pvd::PVString>("name")->get());
    std::string provider(conf->getSubFieldT<pvd::PVString>("provider")->get());

+    LOG(pva::logLevelInfo, "Configure client '%s' with provider '%s'", name.c_str(), provider.c_str());
+
    pva::Configuration::shared_pointer C(pva::ConfigurationBuilder()
                                         .add("EPICS_PVA_ADDR_LIST", conf->getSubFieldT<pvd::PVString>("addrlist")->get())
-                                         .add("EPICS_PVA_AUTO_ADDR_LIST", conf->getSubFieldT<pvd::PVBoolean>("autoaddrlist")->get())
+                                         .add("EPICS_PVA_AUTO_ADDR_LIST", conf->getSubFieldT<pvd::PVScalar>("autoaddrlist")->getAs<std::string>())
                                         .add("EPICS_PVA_SERVER_PORT", conf->getSubFieldT<pvd::PVScalar>("serverport")->getAs<pvd::uint16>())
                                         .add("EPICS_PVA_BROADCAST_PORT", conf->getSubFieldT<pvd::PVScalar>("bcastport")->getAs<pvd::uint16>())
+                                         .add("EPICS_PVA_DEBUG", arg.debug>=5 ? 5 : 0)
                                         .push_map()
                                         .build());

@@ -139,10 +156,17 @@ GWServerChannelProvider::shared_pointer configure_client(const pvd::PVStructureP

 pva::ServerContext::shared_pointer configure_server(ServerConfig& arg, const pvd::PVStructurePtr& conf)
 {
+    std::string name(conf->getSubFieldT<pvd::PVString>("name")->get());
+
+    LOG(pva::logLevelInfo, "Configure server '%s'", name.c_str());
+
    pva::Configuration::shared_pointer C(pva::ConfigurationBuilder()
                                         .add("EPICS_PVAS_INTF_ADDR_LIST", conf->getSubFieldT<pvd::PVString>("interface")->get())
+                                         .add("EPICS_PVAS_BEACON_ADDR_LIST", conf->getSubFieldT<pvd::PVString>("addrlist")->get())
+                                         .add("EPICS_PVAS_AUTO_BEACON_ADDR_LIST", conf->getSubFieldT<pvd::PVScalar>("autoaddrlist")->getAs<std::string>())
                                         .add("EPICS_PVAS_SERVER_PORT", conf->getSubFieldT<pvd::PVScalar>("serverport")->getAs<pvd::uint16>())
                                         .add("EPICS_PVAS_BROADCAST_PORT", conf->getSubFieldT<pvd::PVScalar>("bcastport")->getAs<pvd::uint16>())
+                                         .add("EPICS_PVA_DEBUG", arg.debug>=5 ? 5 : 0)
                                         .push_map()
                                         .build());

@@ -222,6 +246,8 @@ int main(int argc, char *argv[])
        epics::iocshRegister<int, const char*, &gwsr>("gwsr", "level", "channel");
        epics::iocshRegister<int, const char*, const char*, &gwcr>("gwcr", "level", "client", "channel");

+        libComRegister();
+        registerReadOnly();
        epics::registerRefCounter("ChannelCacheEntry", &ChannelCacheEntry::num_instances);
        epics::registerRefCounter("ChannelCacheEntry::CRequester", &ChannelCacheEntry::CRequester::num_instances);
        epics::registerRefCounter("GWChannel", &GWChannel::num_instances);
@@ -232,6 +258,32 @@ int main(int argc, char *argv[])
        theserver = &arg;
        getargs(arg, argc, argv);

+        if(arg.debug>0)
+            std::cout<<"Notice: This p2p gateway prototype has been superceded by the p4p.gw gateway\n"
+                       "        which has exciting new features including granular access control,\n"
+                       "        and status PVs including bandwidth usage reports.\n"
+                       "        p2p is considered deprecated by its author, and will receive\n"
+                       "        minimal maintainance effort going forward.\n"
+                       "        Users are encouraged to migrate to p4p.gw.\n"
+                       "\n"
+                       "        https://mdavidsaver.github.io/p4p/gw.html\n"
+                       "\n";
+
+        pva::pvAccessLogLevel lvl;
+        if(arg.debug<0)
+            lvl = pva::logLevelError;
+        else if(arg.debug==0)
+            lvl = pva::logLevelWarn;
+        else if(arg.debug==1)
+            lvl = pva::logLevelInfo;
+        else if(arg.debug==2)
+            lvl = pva::logLevelDebug;
+        else if(arg.debug==3)
+            lvl = pva::logLevelTrace;
+        else if(arg.debug>=4)
+            lvl = pva::logLevelAll;
+        SET_LOG_LEVEL(lvl);
+
        pva::ClientFactory::start();

        pvd::PVStructureArray::const_svector arr;
@@ -250,7 +302,7 @@ int main(int argc, char *argv[])
            if(it!=arg.clients.end())
                throw std::runtime_error(std::string("Duplicate client name not allowed : ")+name);

-            arg.clients[name] = configure_client(client);
+            arg.clients[name] = configure_client(arg, client);
        }

        arr = arg.conf->getSubFieldT<pvd::PVStructureArray>("servers")->view();
@@ -5,14 +5,12 @@

 #include <pv/pvAccess.h>

-#include <shareLib.h>
-
 typedef epicsGuard<epicsMutex> Guard;
 typedef epicsGuardRelease<epicsMutex> UnGuard;

-epicsShareExtern void registerGWClientIocsh();
-epicsShareExtern void gwServerShutdown();
-epicsShareExtern void gwClientShutdown();
-epicsShareExtern void registerReadOnly();
+void registerGWClientIocsh();
+void gwServerShutdown();
+void gwClientShutdown();
+void registerReadOnly();

 #endif // PVA2PVA_H
@@ -4,6 +4,7 @@
 #include <epicsString.h>
 #include <epicsTimer.h>

+#include <pv/logger.h>
 #include <pv/pvIntrospect.h> /* for pvdVersion.h */
 #include <pv/epicsException.h>
 #include <pv/serverContext.h>
@@ -40,14 +41,8 @@ GWServerChannelProvider::channelFind(std::string const & channelName,

    if(!channelName.empty())
    {
-        std::string newName;
-
-        // rewrite name
-        newName = channelName;
-        //newName[0] = 'y';
-
-
-        ChannelCacheEntry::shared_pointer ent(cache.lookup(newName));
+        LOG(pva::logLevelDebug, "Searching for '%s'", channelName.c_str());
+        ChannelCacheEntry::shared_pointer ent(cache.lookup(channelName));
        if(ent) {
            found = true;
            ret = shared_from_this();
@@ -69,19 +64,13 @@ GWServerChannelProvider::createChannel(std::string const & channelName,
                                       short priority, std::string const & addressx)
 {
    GWChannel::shared_pointer ret;
-    std::string newName;
    std::string address = channelRequester->getRequesterName();

    if(!channelName.empty())
    {
-
-        // rewrite name
-        newName = channelName;
-        //newName[0] = 'y';
-
        Guard G(cache.cacheLock);

-        ChannelCacheEntry::shared_pointer ent(cache.lookup(newName)); // recursively locks cacheLock
+        ChannelCacheEntry::shared_pointer ent(cache.lookup(channelName)); // recursively locks cacheLock

        if(ent)
        {
@@ -6,8 +6,6 @@
 #include "chancache.h"
 #include "channel.h"

-#include <shareLib.h>
-
 struct GWServerChannelProvider :
        public epics::pvAccess::ChannelProvider,
        public epics::pvAccess::ChannelFind,
@@ -48,7 +46,7 @@ struct ServerConfig {
    typedef std::map<std::string, epics::pvAccess::ServerContext::shared_pointer> servers_t;
    servers_t servers;

-    ServerConfig() :debug(0), interactive(true) {}
+    ServerConfig() :debug(1), interactive(true) {}

    void drop(const char *client, const char *channel);
    void status_server(int lvl, const char *server);
@@ -75,7 +75,7 @@ private:
        mutex_type mutex;
        store_t store;
    };
-    std::tr1::shared_ptr<data> m_data;
+    std::tr1::shared_ptr<data> _data;

    struct dtor {
        std::tr1::weak_ptr<data> container;
@@ -110,7 +110,7 @@ private:
    };
 public:
    //! Construct a new empty set
-    weak_value_map() :m_data(new data) {}
+    weak_value_map() :_data(new data) {}

 private:
    //! Not copyable
@@ -122,22 +122,22 @@ public:
    //! exchange the two sets.
    //! @warning Not thread safe (exchanges mutexes as well)
    void swap(weak_value_map& O) {
-        m_data.swap(O.m_data);
+        _data.swap(O._data);
    }

    //! Remove all (weak) entries from the set
    //! @note Thread safe
    void clear() {
-        guard_type G(m_data->mutex);
-        return m_data->store.clear();
+        guard_type G(_data->mutex);
+        return _data->store.clear();
    }

    //! Test if set is empty at this moment
    //! @note Thread safe
    //! @warning see size()
    bool empty() const {
-        guard_type G(m_data->mutex);
-        return m_data->store.empty();
+        guard_type G(_data->mutex);
+        return _data->store.empty();
    }

    //! number of entries in the set at this moment
@@ -145,8 +145,8 @@ public:
    //! @warning May be momentarily inaccurate (larger) due to dead refs.
    //!          which have not yet been removed.
    size_t size() const {
-        guard_type G(m_data->mutex);
-        return m_data->store.size();
+        guard_type G(_data->mutex);
+        return _data->store.size();
    }

    //! proxy class for lookup of non-const
@@ -167,8 +167,8 @@ public:
        {
            if(!v.unique())
                throw std::invalid_argument("Only unique() references may be inserted");
-            value_pointer chainptr(v.get(), dtor(M.m_data, k, v));
-            M.m_data->store[k] = chainptr;
+            value_pointer chainptr(v.get(), dtor(M._data, k, v));
+            M._data->store[k] = chainptr;
            v.swap(chainptr);
            return v;
        }
@@ -215,9 +215,9 @@ public:
    value_pointer find(const K& k) const
    {
        value_pointer ret;
-        guard_type G(m_data->mutex);
-        typename store_t::const_iterator it(m_data->store.find(k));
-        if(it!=m_data->store.end()) {
+        guard_type G(_data->mutex);
+        typename store_t::const_iterator it(_data->store.find(k));
+        if(it!=_data->store.end()) {
            // may be nullptr if we race destruction
            // as ref. count falls to zero before we can remove it
            ret = it->second.lock();
@@ -230,9 +230,9 @@ public:
    value_pointer insert(const K& k, value_pointer& v)
    {
        value_pointer ret;
-        guard_type G(m_data->mutex);
-        typename store_t::const_iterator it = m_data->store.find(k);
-        if(it!=m_data->store.end())
+        guard_type G(_data->mutex);
+        typename store_t::const_iterator it = _data->store.find(k);
+        if(it!=_data->store.end())
            ret = it->second.lock();
        (*this)[k] = v;
        return ret;
@@ -243,9 +243,9 @@ public:
    lock_map_type lock_map() const
    {
        lock_map_type ret;
-        guard_type G(m_data->mutex);
-        for(typename store_t::const_iterator it = m_data->store.begin(),
-            end = m_data->store.end(); it!=end; ++it)
+        guard_type G(_data->mutex);
+        for(typename store_t::const_iterator it = _data->store.begin(),
+            end = _data->store.end(); it!=end; ++it)
        {
            value_pointer P(it->second.lock);
            if(P) ret[it->first] = P;
@@ -259,10 +259,10 @@ public:
    lock_vector_type lock_vector() const
    {
        lock_vector_type ret;
-        guard_type G(m_data->mutex);
-        ret.reserve(m_data->store.size());
-        for(typename store_t::const_iterator it = m_data->store.begin(),
-            end = m_data->store.end(); it!=end; ++it)
+        guard_type G(_data->mutex);
+        ret.reserve(_data->store.size());
+        for(typename store_t::const_iterator it = _data->store.begin(),
+            end = _data->store.end(); it!=end; ++it)
        {
            value_pointer P(it->second.lock());
            if(P) ret.push_back(std::make_pair(it->first, P));
@@ -274,7 +274,7 @@ public:
    //! for use with batch operations.
    //! @warning Use caution when swap()ing while holding this lock!
    inline epicsMutex& mutex() const {
-        return m_data->mutex;
+        return _data->mutex;
    }
 };

@@ -94,7 +94,7 @@ private:
        mutex_type mutex;
        store_t store;
    };
-    std::tr1::shared_ptr<data> m_data;
+    std::tr1::shared_ptr<data> _data;

    //! Destroyer for a chained shared_ptr
    //! which holds the unique() real strong
@@ -131,7 +131,7 @@ private:
    };
 public:
    //! Construct a new empty set
-    weak_set() :m_data(new data) {}
+    weak_set() :_data(new data) {}

 private:
    //! Not copyable
@@ -143,22 +143,22 @@ public:
    //! exchange the two sets.
    //! @warning Not thread safe (exchanges mutexes as well)
    void swap(weak_set& O) {
-        m_data.swap(O.m_data);
+        _data.swap(O._data);
    }

    //! Remove all (weak) entries from the set
    //! @note Thread safe
    void clear() {
-        guard_type G(m_data->mutex);
-        return m_data->store.clear();
+        guard_type G(_data->mutex);
+        return _data->store.clear();
    }

    //! Test if set is empty
    //! @note Thread safe
    //! @warning see size()
    bool empty() const {
-        guard_type G(m_data->mutex);
-        return m_data->store.empty();
+        guard_type G(_data->mutex);
+        return _data->store.empty();
    }

    //! number of entries in the set at this moment
@@ -166,8 +166,8 @@ public:
    //! @warning May be momentarily inaccurate (larger) due to dead refs.
    //!          which have not yet been removed.
    size_t size() const {
-        guard_type G(m_data->mutex);
-        return m_data->store.size();
+        guard_type G(_data->mutex);
+        return _data->store.size();
    }

    //! Insert a new entry into the set
@@ -178,8 +178,8 @@ public:
    //! Remove any (weak) ref to this object from the set
    //! @returns the number of objects removed (0 or 1)
    size_t erase(value_pointer& v) {
-        guard_type G(m_data->mutex);
-        return m_data->store.erase(v);
+        guard_type G(_data->mutex);
+        return _data->store.erase(v);
    }

    //! Return a set of strong references to all entries
@@ -197,7 +197,7 @@ public:
    //! for use with batch operations.
    //! @warning Use caution when swap()ing while holding this lock!
    inline epicsMutex& mutex() const {
-        return m_data->mutex;
+        return _data->mutex;
    }

    //! an iterator-ish object which also locks the set during iteration
@@ -205,7 +205,7 @@ public:
        weak_set& set;
        epicsGuard<epicsMutex> guard;
        typename store_t::iterator it, end;
-        XIterator(weak_set& S) :set(S), guard(S.mutex()), it(S.m_data->store.begin()), end(S.m_data->store.end()) {}
+        XIterator(weak_set& S) :set(S), guard(S.mutex()), it(S._data->store.begin()), end(S._data->store.end()) {}
        //! yield the next live entry
        value_pointer next() {
            value_pointer ret;
@@ -229,14 +229,14 @@ void weak_set<T>::insert(value_pointer &v)
    if(!v.unique())
        throw std::invalid_argument("Only unique() references may be inserted");

-    guard_type G(m_data->mutex);
-    typename store_t::const_iterator it = m_data->store.find(v);
-    if(it==m_data->store.end()) { // new object
+    guard_type G(_data->mutex);
+    typename store_t::const_iterator it = _data->store.find(v);
+    if(it==_data->store.end()) { // new object

        // wrapped strong ref. which removes from our map
-        value_pointer chainptr(v.get(), dtor(m_data, v));
+        value_pointer chainptr(v.get(), dtor(_data, v));

-        m_data->store.insert(chainptr);
+        _data->store.insert(chainptr);

        v.swap(chainptr); // we only keep the chained pointer
    } else {
@@ -253,9 +253,9 @@ typename weak_set<T>::set_type
 weak_set<T>::lock_set() const
 {
    set_type ret;
-    guard_type G(m_data->mutex);
-    for(typename store_t::const_iterator it=m_data->store.begin(),
-        end=m_data->store.end(); it!=end; ++it)
+    guard_type G(_data->mutex);
+    for(typename store_t::const_iterator it=_data->store.begin(),
+        end=_data->store.end(); it!=end; ++it)
    {
        value_pointer P(it->lock());
        if(P) ret.insert(P);
@@ -275,10 +275,10 @@ weak_set<T>::lock_vector() const
 template<typename T>
 void weak_set<T>::lock_vector(vector_type& ret) const
 {
-    guard_type G(m_data->mutex);
-    ret.reserve(m_data->store.size());
-    for(typename store_t::const_iterator it=m_data->store.begin(),
-        end=m_data->store.end(); it!=end; ++it)
+    guard_type G(_data->mutex);
+    ret.reserve(_data->store.size());
+    for(typename store_t::const_iterator it=_data->store.begin(),
+        end=_data->store.end(); it!=end; ++it)
    {
        value_pointer P(it->lock());
        if(P) ret.push_back(P);
@@ -5,23 +5,54 @@ include $(TOP)/configure/CONFIG
 #  ADD MACRO DEFINITIONS AFTER THIS LINE
 #=============================

+ifeq ($(OS_CLASS),RTEMS)
+# set by Base in configure/os/CONFIG.UnixCommon.Common
+# then clobbered by included RTEMS make/host.cfg
+# to drop the '-p'
+MKDIR = mkdir -p
+endif
+
 LIBRARY += qsrv

 SHRLIB_VERSION ?= $(EPICS_QSRV_ABI_MAJOR_VERSION).$(EPICS_QSRV_ABI_MINOR_VERSION)

+USR_CPPFLAGS += -DQSRV_API_BUILDING
 USR_CPPFLAGS += -I$(TOP)/common -I$(TOP)/p2pApp

+INC += pv/qsrv.h
+INC += pv/qsrvVersionNum.h
+
+EXPANDVARS += EPICS_QSRV_MAJOR_VERSION
+EXPANDVARS += EPICS_QSRV_MINOR_VERSION
+EXPANDVARS += EPICS_QSRV_MAINTENANCE_VERSION
+EXPANDVARS += EPICS_QSRV_DEVELOPMENT_FLAG
+EXPANDVARS += EPICS_QSRV_ABI_MAJOR_VERSION
+EXPANDVARS += EPICS_QSRV_ABI_MINOR_VERSION
+
+EXPANDFLAGS += $(foreach var,$(EXPANDVARS),-D$(var)="$(strip $($(var)))")
+
 qsrv_SRCS += pvif.cpp
 qsrv_SRCS += qsrv.cpp
 qsrv_SRCS += pdb.cpp
 qsrv_SRCS += pdbsingle.cpp
-#qsrv_SRCS += pvalink.cpp
 qsrv_SRCS += demo.cpp
 qsrv_SRCS += imagedemo.c

 ifdef BASE_3_16
 qsrv_SRCS += pdbgroup.cpp
 qsrv_SRCS += configparse.cpp
+
+qsrv_SRCS += dbf_copy.cpp
+qsrv_SRCS += tpool.cpp
+
+qsrv_SRCS += pvalink.cpp
+qsrv_SRCS += pvalink_lset.cpp
+qsrv_SRCS += pvalink_jlif.cpp
+qsrv_SRCS += pvalink_link.cpp
+qsrv_SRCS += pvalink_channel.cpp
+else
+
+qsrv_SRCS += pvalink_null.cpp
 endif

 qsrv_LIBS += pvAccess pvData
@@ -29,7 +60,9 @@ qsrv_LIBS += $(EPICS_BASE_IOC_LIBS)

 FINAL_LOCATION ?= $(shell $(PERL) $(TOOLS)/fullPathName.pl $(INSTALL_LOCATION))

-USR_CPPFLAGS += -DFINAL_LOCATION="\"$(FINAL_LOCATION)\""
+# since we copy softMain.cpp from Base, use the same
+# EPICS_BASE macro for our location
+USR_CPPFLAGS += -DEPICS_BASE="\"$(FINAL_LOCATION)\""

 PROD_IOC += softIocPVA

@@ -43,6 +76,11 @@ softIocPVA_LIBS += $(EPICS_BASE_IOC_LIBS)
 DBD += softIocPVA.dbd
 DBD += qsrv.dbd

+ifneq ($(FINAL_LOCATION),$(EPICS_BASE))
+# Copy from Base if we won't be installed there
+DB_INSTALLS += $(EPICS_BASE)/db/softIocExit.db
+endif
+
 softIocPVA_DBD += softIoc.dbd
 softIocPVA_DBD += PVAServerRegister.dbd
 softIocPVA_DBD += qsrv.dbd
@@ -53,3 +91,24 @@ include $(TOP)/configure/RULES
 #----------------------------------------
 #  ADD RULES AFTER THIS LINE

+# Can't use EXPAND as generated headers must appear
+# in O.Common, but EXPAND emits rules for O.$(T_A)
+../O.Common/pv/qsrvVersionNum.h: ../pv/qsrvVersionNum.h@
+	$(MKDIR) $(COMMON_DIR)/pv
+	$(EXPAND_TOOL) $(EXPANDFLAGS) $($@_EXPANDFLAGS) $< $@
+
+qsrv$(DEP): ../O.Common/pv/qsrvVersionNum.h
+pvalink$(DEP): ../O.Common/pv/qsrvVersionNum.h
+
+ifdef BASE_3_16
+../O.Common/qsrv.dbd: ../qsrv-new.dbd
+	$(CP) $< $@
+else
+../O.Common/qsrv.dbd: ../qsrv-old.dbd
+	$(CP) $< $@
+endif
+qsrv.dbd$(DEP):
+	@$(RM) $@
+	@echo "$(COMMONDEP_TARGET): ../Makefile" > $@
+
+../O.Common/softIocPVA.dbd: ../O.Common/qsrv.dbd
@@ -14,7 +14,6 @@
 #include <pv/configuration.h>
 #include <pv/json.h>

-#define epicsExportSharedSymbols
 #include "pdbgroup.h"

 namespace {
@@ -27,6 +26,7 @@ typedef std::map<std::string, pvd::AnyScalar> options_t;
 typedef std::map<std::string, options_t> config_t;

 struct context {
+    const std::string chanprefix;
    std::string msg;
    std::string group, field, key;
    unsigned depth; // number of '{'s
@@ -35,9 +35,13 @@ struct context {
    // depth 2 - Group
    // depth 3 - field

-    context() :depth(0u) {}
+    context(const std::string& chanprefix, GroupConfig& conf)
+        :chanprefix(chanprefix)
+        ,depth(0u)
+        ,conf(conf)
+    {}

-    GroupConfig conf;
+    GroupConfig& conf;

    void can_assign()
    {
@@ -70,7 +74,7 @@ struct context {
                fld.type = value.ref<std::string>();

            } else if(key=="+channel") {
-                fld.channel = value.ref<std::string>();
+                fld.channel = chanprefix + value.ref<std::string>();

            } else if(key=="+id") {
                fld.id = value.ref<std::string>();
@@ -218,6 +222,7 @@ struct handler {
 }// namespace

 void GroupConfig::parse(const char *txt,
+                        const char *recname,
                        GroupConfig& result)
 {
 #ifndef EPICS_YAJL_VERSION
@@ -229,7 +234,12 @@ void GroupConfig::parse(const char *txt,

    std::istringstream strm(txt);

-    context ctxt;
+    std::string chanprefix;
+    if(recname) {
+        chanprefix = recname;
+        chanprefix += '.';
+    }
+    context ctxt(chanprefix, result);

 #ifndef EPICS_YAJL_VERSION
    handler handle(yajl_alloc(&conf_cbs, &conf, NULL, &ctxt));
@@ -241,6 +251,4 @@ void GroupConfig::parse(const char *txt,

    if(!pvd::yajl_parse_helper(strm, handle))
        throw std::runtime_error(ctxt.msg);
-
-    ctxt.conf.swap(result);
 }
@@ -0,0 +1,245 @@
+
+#include <epicsStdio.h>
+#include <dbAccess.h>
+#include <dbChannel.h>
+#include <dbStaticLib.h>
+#include <dbLock.h>
+#include <dbEvent.h>
+#include <epicsString.h>
+#include <epicsVersion.h>
+
+#include <pv/status.h>
+#include <pv/bitSet.h>
+#include <pv/pvData.h>
+#include <pv/anyscalar.h>
+
+#include "pvif.h"
+
+namespace pvd = epics::pvData;
+
+// note that we handle DBF_ENUM differently than in pvif.cpp
+static
+pvd::ScalarType DBR2PVD(short dbr)
+{
+    switch(dbr) {
+#define CASE(BASETYPE, PVATYPE, DBFTYPE, PVACODE) case DBR_##DBFTYPE: return pvd::pv##PVACODE;
+#define CASE_SKIP_BOOL
+#define CASE_REAL_INT64
+#include "pv/typemap.h"
+#undef CASE_SKIP_BOOL
+#undef CASE_REAL_INT64
+#undef CASE
+    case DBF_ENUM: return pvd::pvUShort;
+    case DBF_STRING: return pvd::pvString;
+    }
+    throw std::invalid_argument("Unsupported DBR code");
+}
+
+long copyPVD2DBF(const pvd::PVField::const_shared_pointer& inraw,
+                 void *outbuf, short outdbf, long *outnReq)
+{
+    long nreq = outnReq ? *outnReq : 1;
+    if(!inraw || nreq <= 0 || INVALID_DB_REQ(outdbf)) return S_db_errArg;
+
+    pvd::ScalarType outpvd = DBR2PVD(outdbf);
+
+    pvd::PVField::const_shared_pointer in(inraw);
+
+    if(outdbf != DBF_STRING && in->getField()->getType() == pvd::structure) {
+        // assume NTEnum.
+        // index to string not requested, so attempt to treat .index as plain integer
+        in = static_cast<const pvd::PVStructure*>(in.get())->getSubField("index");
+        if(!in) return S_db_errArg;
+    }
+
+    if(in->getField()->getType() == pvd::structure) {
+        assert(outdbf == DBF_STRING);
+        char *outsbuf = (char*)outbuf;
+
+        // maybe NTEnum
+        // try index -> string
+        const pvd::PVStructure* sin = static_cast<const pvd::PVStructure*>(in.get());
+
+        pvd::PVScalar::const_shared_pointer index(sin->getSubField<pvd::PVScalar>("index"));
+        if(!index) return S_db_badField; // Not NTEnum, don't know how to handle...
+
+        // we will have an answer.
+        if(outnReq)
+            *outnReq = 1;
+
+        pvd::uint16 ival = index->getAs<pvd::uint16>();
+
+
+        pvd::PVStringArray::const_shared_pointer choices(sin->getSubField<pvd::PVStringArray>("choices"));
+
+        if(choices) {
+            pvd::PVStringArray::const_svector strs(choices->view());
+
+            if(ival < strs.size()) {
+                // found it!
+
+                const std::string& sval = strs[ival];
+                size_t slen = std::min(sval.size(), size_t(MAX_STRING_SIZE-1));
+                memcpy(outbuf, sval.c_str(), slen);
+                outsbuf[slen] = '\0';
+                return 0;
+            }
+        }
+        // didn't find it.  either no choices or index is out of range
+
+        // print numeric index
+        epicsSnprintf(outsbuf, MAX_STRING_SIZE, "%u", ival);
+        return 0;
+
+    } else if(in->getField()->getType() == pvd::scalarArray) {
+        const pvd::PVScalarArray* sarr = static_cast<const pvd::PVScalarArray*>(in.get());
+        pvd::shared_vector<const void> arr;
+        sarr->getAs(arr);
+        size_t elemsize = pvd::ScalarTypeFunc::elementSize(arr.original_type());
+
+        arr.slice(0, nreq*elemsize);
+        nreq = arr.size()/elemsize;
+
+        if(outdbf == DBF_STRING) {
+            char *outsbuf = (char*)outbuf;
+
+            // allocate a temp buffer of string[], ick...
+            pvd::shared_vector<std::string> strs(nreq); // alloc
+
+            pvd::castUnsafeV(nreq, pvd::pvString, strs.data(), arr.original_type(), arr.data());
+
+            for(long i =0; i<nreq; i++, outsbuf += MAX_STRING_SIZE) {
+                size_t slen = std::min(strs[i].size(), size_t(MAX_STRING_SIZE-1));
+                memcpy(outsbuf, strs[i].c_str(), slen);
+                outsbuf[slen] = '\0';
+            }
+
+        } else {
+            pvd::castUnsafeV(nreq, outpvd, outbuf, arr.original_type(), arr.data());
+        }
+
+        if(outnReq)
+            *outnReq = nreq;
+        return 0;
+
+    } else if(in->getField()->getType() == pvd::scalar) {
+        char *outsbuf = (char*)outbuf;
+        const pvd::PVScalar* sval = static_cast<const pvd::PVScalar*>(in.get());
+        pvd::AnyScalar val;
+        sval->getAs(val);
+
+        if(outdbf == DBF_STRING && val.type()==pvd::pvString) {
+            // std::string to char*
+            size_t len = std::min(val.as<std::string>().size(), size_t(MAX_STRING_SIZE-1));
+
+            memcpy(outbuf, val.as<std::string>().c_str(), len);
+            outsbuf[len] = '\0';
+
+        } else if(outdbf == DBF_STRING) {
+            // non-string to char*
+            std::string temp;
+
+            pvd::castUnsafeV(1, pvd::pvString, &temp, val.type(), val.unsafe());
+
+            size_t len = std::min(temp.size(), size_t(MAX_STRING_SIZE-1));
+
+            memcpy(outbuf, temp.c_str(), len);
+            outsbuf[len] = '\0';
+
+        } else {
+            // non-string to any
+            pvd::castUnsafeV(1, outpvd, outbuf, val.type(), val.unsafe());
+        }
+
+        if(outnReq)
+            *outnReq = 1;
+        return 0;
+
+    } else {
+        // struct array or other strangeness which I don't know how to handle
+        return S_dbLib_badField;
+    }
+}
+
+long copyDBF2PVD(const pvd::shared_vector<const void> &inbuf,
+                 const pvd::PVField::shared_pointer& outraw,
+                 pvd::BitSet& changed,
+                 const pvd::PVStringArray::const_svector &choices)
+{
+
+    pvd::ScalarType inpvd = inbuf.original_type();
+    size_t incnt = inbuf.size()/pvd::ScalarTypeFunc::elementSize(inpvd);
+
+    if(!outraw) return S_db_errArg;
+
+    pvd::PVField::shared_pointer out(outraw);
+
+    if(inpvd != pvd::pvString && out->getField()->getType() == pvd::structure) {
+        // assume NTEnum.
+        // string to index not requested, so attempt to treat .index as plain integer
+        out = static_cast<pvd::PVStructure*>(out.get())->getSubField("index");
+        if(!out) return S_db_errArg;
+    }
+
+    if(out->getField()->getType() == pvd::structure) {
+        assert(inpvd == pvd::pvString);
+
+        if(incnt==0)
+            return S_db_errArg; // Need at least one string
+
+        const pvd::shared_vector<const std::string> insbuf(pvd::static_shared_vector_cast<const std::string>(inbuf));
+        const std::string& instr(insbuf[0]);
+
+        // assume NTEnum
+        // try string to index, then parse
+        pvd::PVStructure* sout = static_cast<pvd::PVStructure*>(out.get());
+
+        pvd::PVScalar::shared_pointer index(sout->getSubField<pvd::PVScalar>("index"));
+        if(!index) return S_db_badField; // Not NTEnum, don't know how to handle...
+
+        pvd::uint16 result = pvd::uint16(-1);
+        bool match = false;
+
+        for(size_t i=0, N=std::min(size_t(0xffff), choices.size()); i<N; i++) {
+            if(choices[i] == instr) {
+                match = true;
+                result = pvd::uint16(i);
+            }
+        }
+
+        if(!match) {
+            // no choice string matched, so try to parse as integer
+
+            try{
+                result = pvd::castUnsafe<pvd::uint16>(instr);
+            }catch(std::exception&){
+                return S_db_errArg;
+            }
+        }
+
+        index->putFrom(result);
+
+        out = index;
+
+    } else if(out->getField()->getType() == pvd::scalarArray) {
+        pvd::PVScalarArray* sarr = static_cast<pvd::PVScalarArray*>(out.get());
+
+        sarr->putFrom(inbuf);
+
+    } else if(out->getField()->getType() == pvd::scalar) {
+        pvd::PVScalar* sval = static_cast<pvd::PVScalar*>(out.get());
+
+        if(incnt==0) return S_db_errArg;
+
+        pvd::AnyScalar val(inpvd, inbuf.data());
+
+        sval->putFrom(val);
+
+    } else {
+        // struct array or other strangeness which I don't know how to handle
+        return S_db_badField;
+    }
+
+    changed.set(out->getFieldOffset());
+    return 0;
+}
@@ -19,7 +19,6 @@
 #include <pv/pvAccess.h>
 #include <pv/configuration.h>

-#define epicsExportSharedSymbols
 #include "helper.h"
 #include "pdbsingle.h"
 #include "pvif.h"
@@ -60,16 +59,14 @@ struct Splitter {
 };

 struct GroupMemberInfo {
-    // consumes builder
-    GroupMemberInfo(const std::string& a, const std::string& b, const std::tr1::shared_ptr<PVIFBuilder>& builder)
-        :pvname(a), pvfldname(b), builder(builder), putorder(0) {}
+    GroupMemberInfo() :putorder(0) {}

    std::string pvname, // aka. name passed to dbChannelOpen()
                pvfldname; // PVStructure sub-field
    std::string structID; // ID to assign to sub-field
+    std::string type; // mapping type
    typedef std::set<std::string> triggers_t;
    triggers_t triggers; // names in GroupInfo::members_names which are post()d on events from pvfldname
-    std::tr1::shared_ptr<PVIFBuilder> builder; // not actually shared, but allows us to be copyable
    int putorder;

    bool operator<(const GroupMemberInfo& o) const {
@@ -101,9 +98,6 @@ struct PDBProcessor
    typedef std::map<std::string, GroupInfo> groups_t;
    groups_t groups;

-    std::string recbase;
-    GroupInfo *curgroup;
-
    // validate trigger mappings and process into bit map form
    void resolveTriggers()
    {
@@ -178,8 +172,13 @@ struct PDBProcessor
        }
    }

-    PDBProcessor() : curgroup(NULL)
+    PDBProcessor()
    {
+#ifdef USE_MULTILOCK
+        GroupConfig conf;
+#endif
+
+        // process info(Q:Group, ...)
        for(pdbRecordIterator rec; !rec.done(); rec.next())
        {
            const char *json = rec.info("Q:group");
@@ -190,107 +189,154 @@ struct PDBProcessor
                warned = true;
                fprintf(stderr, "%s: ignoring info(Q:Group, ...\n", rec.name());
            }
-#else
+#endif
            if(PDBProviderDebug>2) {
                fprintf(stderr, "%s: info(Q:Group, ...\n", rec.name());
            }

+#ifdef USE_MULTILOCK
            try {
-                GroupConfig conf;
-                GroupConfig::parse(json, conf);
+                GroupConfig::parse(json, rec.name(), conf);
                if(!conf.warning.empty())
-                    fprintf(stderr, "%s: warning(s) from info(Q:group, ...\n%s", rec.record()->name, conf.warning.c_str());
-
-                recbase = rec.record()->name;
-                recbase += ".";
-
-                for(GroupConfig::groups_t::const_iterator git=conf.groups.begin(), gend=conf.groups.end();
-                    git!=gend; ++git)
-                {
-                    const std::string& grpname = git->first;
-                    const GroupConfig::Group& grp = git->second;
-
-                    if(dbChannelTest(grpname.c_str())==0) {
-                        fprintf(stderr, "%s : Error: Group name conflicts with record name.  Ignoring...\n", grpname.c_str());
-                        continue;
-                    }
-
-                    groups_t::iterator it = groups.find(grpname);
-                    if(it==groups.end()) {
-                        // lazy creation of group
-                        std::pair<groups_t::iterator, bool> ins(groups.insert(std::make_pair(grpname, GroupInfo(grpname))));
-                        it = ins.first;
-                    }
-                    curgroup = &it->second;
-                    if(!grp.id.empty())
-                        curgroup->structID = grp.id;
-
-                    for(GroupConfig::Group::fields_t::const_iterator fit=grp.fields.begin(), fend=grp.fields.end();
-                        fit!=fend; ++fit)
-                    {
-                        const std::string& fldname = fit->first;
-                        const GroupConfig::Field& fld = fit->second;
-
-                        GroupInfo::members_map_t::const_iterator oldgrp(curgroup->members_map.find(fldname));
-                        if(oldgrp!=curgroup->members_map.end()) {
-                            fprintf(stderr, "%s.%s Warning: ignoring duplicate mapping %s%s\n",
-                                    grpname.c_str(), fldname.c_str(),
-                                    recbase.c_str(), fld.channel.c_str());
-                            continue;
-                        }
-
-                        std::tr1::shared_ptr<PVIFBuilder> builder(PVIFBuilder::create(fld.type));
-
-                        curgroup->members.push_back(GroupMemberInfo(fld.channel.empty() ? fld.channel : recbase + fld.channel, fldname, builder));
-                        curgroup->members.back().structID = fld.id;
-                        curgroup->members.back().putorder = fld.putorder;
-                        curgroup->members_map[fldname] = (size_t)-1; // placeholder  see below
-
-                        if(PDBProviderDebug>2) {
-                            fprintf(stderr, "  pdb map '%s.%s' <-> '%s'\n",
-                                    curgroup->name.c_str(),
-                                    curgroup->members.back().pvfldname.c_str(),
-                                    curgroup->members.back().pvname.c_str());
-                        }
-
-                        if(!fld.trigger.empty()) {
-                            GroupInfo::triggers_t::iterator it = curgroup->triggers.find(fldname);
-                            if(it==curgroup->triggers.end()) {
-                                std::pair<GroupInfo::triggers_t::iterator, bool> ins(curgroup->triggers.insert(
-                                                                                         std::make_pair(fldname, GroupInfo::triggers_set_t())));
-                                it = ins.first;
-                            }
-
-                            Splitter sep(fld.trigger.c_str(), ',');
-                            std::string target;
-
-                            while(sep.snip(target)) {
-                                curgroup->hastriggers = true;
-                                it->second.insert(target);
-                            }
-                        }
-                    }
-
-                    if(grp.atomic_set) {
-                        GroupInfo::tribool V = grp.atomic ? GroupInfo::True : GroupInfo::False;
-
-                        if(curgroup->atomic!=GroupInfo::Unset && curgroup->atomic!=V)
-                            fprintf(stderr, "%s Warning: pdb atomic setting inconsistent '%s'\n",
-                                    grpname.c_str(), curgroup->name.c_str());
-
-                        curgroup->atomic=V;
-
-                        if(PDBProviderDebug>2)
-                            fprintf(stderr, "  pdb atomic '%s' %s\n",
-                                    curgroup->name.c_str(), curgroup->atomic ? "YES" : "NO");
-                    }
-                }
-
+                    fprintf(stderr, "%s: warning(s) from info(Q:group, ...\n%s", rec.name(), conf.warning.c_str());
            }catch(std::exception& e){
                fprintf(stderr, "%s: Error parsing info(\"Q:group\", ... : %s\n",
                        rec.record()->name, e.what());
            }
-#endif // USE_MULTILOCK
+#endif
+        }
+
+        // process group definition files
+        for(PDBProvider::group_files_t::const_iterator it(PDBProvider::group_files.begin()), end(PDBProvider::group_files.end());
+            it != end; ++it)
+        {
+            std::ifstream jfile(it->c_str());
+            if(!jfile.is_open()) {
+                fprintf(stderr, "Error opening \"%s\"\n", it->c_str());
+                continue;
+            }
+
+            std::vector<char> contents;
+            size_t pos=0u;
+            while(true) {
+                contents.resize(pos+1024u);
+                if(!jfile.read(&contents[pos], contents.size()-pos))
+                    break;
+                pos += jfile.gcount();
+            }
+
+            if(jfile.bad() || !jfile.eof()) {
+                fprintf(stderr, "Error reading \"%s\"\n", it->c_str());
+                continue;
+            }
+
+            contents.push_back('\0');
+            const char *json = &contents[0];
+
+            if(PDBProviderDebug>2) {
+                fprintf(stderr, "Process dbGroup file \"%s\"\n", it->c_str());
+            }
+
+#ifdef USE_MULTILOCK
+            try {
+                GroupConfig::parse(json, "", conf);
+                if(!conf.warning.empty())
+                    fprintf(stderr, "warning(s) from dbGroup file \"%s\"\n%s", it->c_str(), conf.warning.c_str());
+            }catch(std::exception& e){
+                fprintf(stderr, "Error from dbGroup file \"%s\"\n%s", it->c_str(), e.what());
+            }
+#endif
+        }
+
+#ifdef USE_MULTILOCK
+        for(GroupConfig::groups_t::const_iterator git=conf.groups.begin(), gend=conf.groups.end();
+            git!=gend; ++git)
+        {
+            const std::string& grpname = git->first;
+            const GroupConfig::Group& grp = git->second;
+            try {
+
+                if(dbChannelTest(grpname.c_str())==0) {
+                    fprintf(stderr, "%s : Error: Group name conflicts with record name.  Ignoring...\n", grpname.c_str());
+                    continue;
+                }
+
+                groups_t::iterator it = groups.find(grpname);
+                if(it==groups.end()) {
+                    // lazy creation of group
+                    std::pair<groups_t::iterator, bool> ins(groups.insert(std::make_pair(grpname, GroupInfo(grpname))));
+                    it = ins.first;
+                }
+                GroupInfo *curgroup = &it->second;
+
+                if(!grp.id.empty())
+                    curgroup->structID = grp.id;
+
+                for(GroupConfig::Group::fields_t::const_iterator fit=grp.fields.begin(), fend=grp.fields.end();
+                    fit!=fend; ++fit)
+                {
+                    const std::string& fldname = fit->first;
+                    const GroupConfig::Field& fld = fit->second;
+
+                    if(curgroup->members_map.find(fldname) != curgroup->members_map.end()) {
+                        fprintf(stderr, "%s.%s Warning: ignoring duplicate mapping %s\n",
+                                grpname.c_str(), fldname.c_str(),
+                                fld.channel.c_str());
+                        continue;
+                    }
+
+                    curgroup->members.push_back(GroupMemberInfo());
+                    GroupMemberInfo& info = curgroup->members.back();
+                    info.pvname = fld.channel;
+                    info.pvfldname = fldname;
+                    info.structID = fld.id;
+                    info.putorder = fld.putorder;
+                    info.type = fld.type;
+                    curgroup->members_map[fldname] = (size_t)-1; // placeholder  see below
+
+                    if(PDBProviderDebug>2) {
+                        fprintf(stderr, "  pdb map '%s.%s' <-> '%s'\n",
+                                curgroup->name.c_str(),
+                                curgroup->members.back().pvfldname.c_str(),
+                                curgroup->members.back().pvname.c_str());
+                    }
+
+                    if(!fld.trigger.empty()) {
+                        GroupInfo::triggers_t::iterator it = curgroup->triggers.find(fldname);
+                        if(it==curgroup->triggers.end()) {
+                            std::pair<GroupInfo::triggers_t::iterator, bool> ins(curgroup->triggers.insert(
+                                                                                     std::make_pair(fldname, GroupInfo::triggers_set_t())));
+                            it = ins.first;
+                        }
+
+                        Splitter sep(fld.trigger.c_str(), ',');
+                        std::string target;
+
+                        while(sep.snip(target)) {
+                            curgroup->hastriggers = true;
+                            it->second.insert(target);
+                        }
+                    }
+                }
+
+                if(grp.atomic_set) {
+                    GroupInfo::tribool V = grp.atomic ? GroupInfo::True : GroupInfo::False;
+
+                    if(curgroup->atomic!=GroupInfo::Unset && curgroup->atomic!=V)
+                        fprintf(stderr, "%s Warning: pdb atomic setting inconsistent '%s'\n",
+                                grpname.c_str(), curgroup->name.c_str());
+
+                    curgroup->atomic=V;
+
+                    if(PDBProviderDebug>2)
+                        fprintf(stderr, "  pdb atomic '%s' %s\n",
+                                curgroup->name.c_str(), curgroup->atomic ? "YES" : "NO");
+                }
+
+            }catch(std::exception& e){
+                fprintf(stderr, "Error processing Q:group \"%s\" : %s\n",
+                        grpname.c_str(), e.what());
+            }
        }

        // re-sort GroupInfo::members to ensure the shorter names appear first
@@ -312,6 +358,7 @@ struct PDBProcessor
        resolveTriggers();
        // must not re-sort members after this point as resolveTriggers()
        // has stored array indicies.
+#endif
    }

 };
@@ -319,6 +366,8 @@ struct PDBProcessor

 size_t PDBProvider::num_instances;

+std::list<std::string> PDBProvider::group_files;
+
 PDBProvider::PDBProvider(const epics::pvAccess::Configuration::const_shared_pointer &)
 {
    /* Long view
@@ -406,10 +455,12 @@ PDBProvider::PDBProvider(const epics::pvAccess::Configuration::const_shared_poin
                    chan.swap(temp);
                }

+                std::tr1::shared_ptr<PVIFBuilder> pvifbuilder(PVIFBuilder::create(mem.type, chan.chan));
+
                if(!parts.empty())
-                    builder = mem.builder->dtype(builder, parts.back().name, chan);
+                    builder = pvifbuilder->dtype(builder, parts.back().name);
                else
-                    builder = mem.builder->dtype(builder, "", chan);
+                    builder = pvifbuilder->dtype(builder, "");

                if(!parts.empty()) {
                    for(size_t j=0; j<parts.size()-1; j++)
@@ -420,8 +471,14 @@ PDBProvider::PDBProvider(const epics::pvAccess::Configuration::const_shared_poin
                    members_map[mem.pvfldname] = J;
                    PDBGroupPV::Info& info = members[J];

+                    DBCH chan2;
+                    if(chan.chan && (ellCount(&chan.chan->pre_chain)>0 || ellCount(&chan.chan->post_chain)>0)) {
+                        DBCH temp(mem.pvname);
+                        info.chan2.swap(chan2);
+                    }
+
                    info.allowProc = mem.putorder != std::numeric_limits<int>::min();
-                    info.builder = PTRMOVE(mem.builder);
+                    info.builder = PTRMOVE(pvifbuilder);
                    assert(info.builder.get());

                    info.attachment.swap(parts);
@@ -512,10 +569,11 @@ PDBProvider::PDBProvider(const epics::pvAccess::Configuration::const_shared_poin
                info.evt_VALUE.self = info.evt_PROPERTY.self = pv;
                assert(info.chan);

-                info.pvif.reset(info.builder->attach(info.chan, pv->complete, info.attachment));
+                info.pvif.reset(info.builder->attach(pv->complete, info.attachment));

                // TODO: don't need evt_PROPERTY for PVIF plain
-                info.evt_PROPERTY.create(event_context, info.chan, &pdb_group_event, DBE_PROPERTY);
+                dbChannel *pchan = info.chan2.chan ? info.chan2.chan : info.chan.chan;
+                info.evt_PROPERTY.create(event_context, pchan, &pdb_group_event, DBE_PROPERTY);

                if(!info.triggers.empty()) {
                    info.evt_VALUE.create(event_context, info.chan, &pdb_group_event, DBE_VALUE|DBE_ALARM);
@@ -8,7 +8,7 @@

 #include "weakmap.h"

-#include <shareLib.h>
+#include <pv/qsrv.h>

 struct PDBProvider;

@@ -30,7 +30,7 @@ struct PDBPV
    virtual void show(int lvl) {}
 };

-struct epicsShareClass PDBProvider : public epics::pvAccess::ChannelProvider,
+struct QSRV_API PDBProvider : public epics::pvAccess::ChannelProvider,
                                     public epics::pvAccess::ChannelFind,
                                     public std::tr1::enable_shared_from_this<PDBProvider>
 {
@@ -64,10 +64,13 @@ struct epicsShareClass PDBProvider : public epics::pvAccess::ChannelProvider,

    dbEventCtx event_context;

+    typedef std::list<std::string> group_files_t;
+    static group_files_t group_files;
+
    static size_t num_instances;
 };

-epicsShareFunc
+QSRV_API
 void QSRVRegistrar_counters();

 #endif // PDB_H
@@ -13,7 +13,6 @@
 #include <pv/configuration.h>
 #include <pv/epicsException.h>

-#define epicsExportSharedSymbols
 #include "helper.h"
 #include "pdbgroup.h"
 #include "pdb.h"
@@ -139,6 +138,15 @@ PDBGroupPV::connect(const std::tr1::shared_ptr<PDBProvider>& prov,
                    const pva::ChannelRequester::shared_pointer& req)
 {
    PDBGroupChannel::shared_pointer ret(new PDBGroupChannel(shared_from_this(), prov, req));
+
+    ret->cred.update(req);
+
+    ret->aspvt.resize(members.size());
+    for(size_t i=0, N=members.size(); i<N; i++)
+    {
+        ret->aspvt[i].add(members[i].chan, ret->cred);
+    }
+
    return ret;
 }

@@ -326,7 +334,7 @@ PDBGroupPut::PDBGroupPut(const PDBGroupChannel::shared_pointer& channel,
    {
        PDBGroupPV::Info& info = channel->pv->members[i];

-        pvif[i].reset(info.builder->attach(info.chan, pvf, info.attachment));
+        pvif[i].reset(info.builder->attach(pvf, info.attachment));
    }
 }

@@ -347,7 +355,7 @@ void PDBGroupPut::put(pvd::PVStructure::shared_pointer const & value,
        PDBGroupPV::Info& info = channel->pv->members[i];
        if(!info.allowProc) continue;

-        putpvif[i].reset(info.builder->attach(info.chan, value, info.attachment));
+        putpvif[i].reset(info.builder->attach(value, info.attachment));
    }

    pvd::Status ret;
@@ -368,7 +376,9 @@ void PDBGroupPut::put(pvd::PVStructure::shared_pointer const & value,

            DBScanLocker L(dbChannelRecord(info.chan));

-            ret |= putpvif[i]->get(*changed, info.allowProc ? doProc : PVIF::ProcInhibit);
+            ret |= putpvif[i]->get(*changed,
+                                   info.allowProc ? doProc : PVIF::ProcInhibit,
+                                   channel->aspvt[i].canWrite());
        }
    }

@@ -384,8 +394,10 @@ void PDBGroupPut::get()
    changed->clear();
    if(atomic) {
        DBManyLocker L(channel->pv->locker);
-        for(size_t i=0; i<npvs; i++)
-            pvif[i]->put(*changed, DBE_VALUE|DBE_ALARM|DBE_PROPERTY, NULL);
+        for(size_t i=0; i<npvs; i++) {
+            LocalFL FL(NULL, channel->pv->members[i].chan);
+            pvif[i]->put(*changed, DBE_VALUE|DBE_ALARM|DBE_PROPERTY, FL.pfl);
+        }
    } else {

        for(size_t i=0; i<npvs; i++)
@@ -393,7 +405,8 @@ void PDBGroupPut::get()
            PDBGroupPV::Info& info = channel->pv->members[i];

            DBScanLocker L(dbChannelRecord(info.chan));
-            pvif[i]->put(*changed, DBE_VALUE|DBE_ALARM|DBE_PROPERTY, NULL);
+            LocalFL FL(NULL, info.chan);
+            pvif[i]->put(*changed, DBE_VALUE|DBE_ALARM|DBE_PROPERTY, FL.pfl);
        }
    }
    //TODO: report unused fields as changed?
@@ -17,11 +17,9 @@
 #include "pvif.h"
 #include "pdb.h"

-#include <shareLib.h>
-
-struct epicsShareClass GroupConfig
+struct QSRV_API GroupConfig
 {
-    struct epicsShareClass Field {
+    struct QSRV_API Field {
        std::string type, channel, trigger, id;
        int putorder;

@@ -36,7 +34,7 @@ struct epicsShareClass GroupConfig
        }
    };

-    struct epicsShareClass Group {
+    struct QSRV_API Group {
        typedef std::map<std::string, Field> fields_t;
        fields_t fields;
        bool atomic, atomic_set;
@@ -61,7 +59,7 @@ struct epicsShareClass GroupConfig
        std::swap(warning, o.warning);
    }

-    static void parse(const char *txt,
+    static void parse(const char *txt, const char *recname,
                      GroupConfig& result);
 };

@@ -70,7 +68,7 @@ struct PDBGroupMonitor;
 void pdb_group_event(void *user_arg, struct dbChannel *chan,
                     int eventsRemaining, struct db_field_log *pfl);

-struct epicsShareClass PDBGroupPV : public PDBPV
+struct QSRV_API PDBGroupPV : public PDBPV
 {
    POINTER_DEFINITIONS(PDBGroupPV);
    weak_pointer weakself;
@@ -89,6 +87,8 @@ struct epicsShareClass PDBGroupPV : public PDBPV

    struct Info {
        DBCH chan;
+        // used for DBE_PROPERTY subscription when chan has filters
+        DBCH chan2;
        std::tr1::shared_ptr<PVIFBuilder> builder;
        FieldName attachment;
        typedef std::vector<size_t> triggers_t;
@@ -133,12 +133,15 @@ struct epicsShareClass PDBGroupPV : public PDBPV
    virtual void show(int lvl) OVERRIDE;
 };

-struct epicsShareClass PDBGroupChannel : public BaseChannel,
+struct QSRV_API PDBGroupChannel : public BaseChannel,
        public std::tr1::enable_shared_from_this<PDBGroupChannel>
 {
    POINTER_DEFINITIONS(PDBGroupChannel);

    PDBGroupPV::shared_pointer pv;
+    std::vector<ASCLIENT> aspvt;
+    // storage referenced from aspvt
+    ASCred cred;

    static size_t num_instances;

@@ -5,15 +5,16 @@
 #include <dbAccess.h>
 #include <dbChannel.h>
 #include <dbStaticLib.h>
-#include <epicsAtomic.h>
 #include <errlog.h>
 #include <dbNotify.h>
+#include <osiSock.h>
+#include <epicsAtomic.h>

 #include <pv/epicsException.h>
 #include <pv/pvAccess.h>
+#include <pv/security.h>
 #include <pv/configuration.h>

-#define epicsExportSharedSymbols
 #include "helper.h"
 #include "pdbsingle.h"
 #include "pdb.h"
@@ -95,19 +96,23 @@ void pdb_single_event(void *user_arg, struct dbChannel *chan,
 PDBSinglePV::PDBSinglePV(DBCH& chan,
            const PDBProvider::shared_pointer& prov)
    :provider(prov)
-    ,builder(new ScalarBuilder)
+    ,builder(new ScalarBuilder(chan.chan))
    ,interested_iterating(false)
    ,evt_VALUE(this)
    ,evt_PROPERTY(this)
    ,hadevent_VALUE(false)
    ,hadevent_PROPERTY(false)
 {
+    if(ellCount(&chan.chan->pre_chain) || ellCount(&chan.chan->post_chain)) {
+        DBCH temp(dbChannelName(chan.chan));
+        this->chan2.swap(temp);
+    }
    this->chan.swap(chan);
-    fielddesc = std::tr1::static_pointer_cast<const pvd::Structure>(builder->dtype(this->chan));
+    fielddesc = std::tr1::static_pointer_cast<const pvd::Structure>(builder->dtype());

    complete = pvd::getPVDataCreate()->createPVStructure(fielddesc);
    FieldName temp;
-    pvif.reset(builder->attach(this->chan, complete, temp));
+    pvif.reset(builder->attach(complete, temp));

    epics::atomic::increment(num_instances);
 }
@@ -119,8 +124,9 @@ PDBSinglePV::~PDBSinglePV()

 void PDBSinglePV::activate()
 {
+    dbChannel *pchan = this->chan2.chan ? this->chan2.chan : this->chan.chan;
    evt_VALUE.create(provider->event_context, this->chan, &pdb_single_event, DBE_VALUE|DBE_ALARM);
-    evt_PROPERTY.create(provider->event_context, this->chan, &pdb_single_event, DBE_PROPERTY);
+    evt_PROPERTY.create(provider->event_context, pchan, &pdb_single_event, DBE_PROPERTY);
 }

 pva::Channel::shared_pointer
@@ -128,6 +134,11 @@ PDBSinglePV::connect(const std::tr1::shared_ptr<PDBProvider>& prov,
                     const pva::ChannelRequester::shared_pointer& req)
 {
    PDBSingleChannel::shared_pointer ret(new PDBSingleChannel(shared_from_this(), req));
+
+    ret->cred.update(req);
+
+    ret->aspvt.add(chan, ret->cred);
+
    return ret;
 }

@@ -145,7 +156,7 @@ void PDBSinglePV::addMonitor(PDBSingleMonitor* mon)
        db_post_single_event(evt_VALUE.subscript);
        db_post_single_event(evt_PROPERTY.subscript);

-    } if(hadevent_VALUE && hadevent_PROPERTY) {
+    } else if(hadevent_VALUE && hadevent_PROPERTY) {
        // new subscriber and already had initial update
        mon->post(G);
    } // else new subscriber, but no initial update.  so just wait
@@ -200,7 +211,15 @@ PDBSingleChannel::~PDBSingleChannel()

 void PDBSingleChannel::printInfo(std::ostream& out)
 {
-    out<<"PDBSingleChannel";
+    if(aspvt.canWrite())
+        out << "RW ";
+    else
+        out << "RO ";
+    out<<(&cred.user[0])<<'@'<<(&cred.host[0]);
+    for(size_t i=0, N=cred.groups.size(); i<N; i++) {
+        out<<", "<<(&cred.groups[i][0]);
+    }
+    out<<"\n";
 }

 pva::ChannelPut::shared_pointer
@@ -289,7 +308,7 @@ PDBSinglePut::PDBSinglePut(const PDBSingleChannel::shared_pointer &channel,
    ,requester(requester)
    ,changed(new pvd::BitSet(channel->fielddesc->getNumberFields()))
    ,pvf(pvd::getPVDataCreate()->createPVStructure(channel->fielddesc))
-    ,pvif(channel->pv->builder->attach(channel->pv->chan, pvf, FieldName()))
+    ,pvif(channel->pv->builder->attach(pvf, FieldName()))
    ,notifyBusy(0)
    ,doProc(PVIF::ProcPassive)
    ,doWait(false)
@@ -337,7 +356,10 @@ void PDBSinglePut::put(pvd::PVStructure::shared_pointer const & value,
    dbFldDes *fld = dbChannelFldDes(chan);

    pvd::Status ret;
-    if(dbChannelFieldType(chan)>=DBF_INLINK && dbChannelFieldType(chan)<=DBF_FWDLINK) {
+    if(!channel->aspvt.canWrite()) {
+        ret = pvd::Status::error("Put not permitted");
+
+    } else if(dbChannelFieldType(chan)>=DBF_INLINK && dbChannelFieldType(chan)<=DBF_FWDLINK) {
        try{
            std::string lval(value->getSubFieldT<pvd::PVScalar>("value")->getAs<std::string>());
            long status = dbChannelPutField(chan, DBF_STRING, lval.c_str(), 1);
@@ -353,7 +375,7 @@ void PDBSinglePut::put(pvd::PVStructure::shared_pointer const & value,
        // TODO: dbNotify doesn't allow us for force processing

        // assume value may be a different struct each time
-        p2p::auto_ptr<PVIF> putpvif(channel->pv->builder->attach(channel->pv->chan, value, FieldName()));
+        p2p::auto_ptr<PVIF> putpvif(channel->pv->builder->attach(value, FieldName()));
        unsigned mask = putpvif->dbe(*changed);

        if(mask!=DBE_VALUE) {
@@ -375,10 +397,10 @@ void PDBSinglePut::put(pvd::PVStructure::shared_pointer const & value,
        return; // skip notification
    } else {
        // assume value may be a different struct each time
-        p2p::auto_ptr<PVIF> putpvif(channel->pv->builder->attach(channel->pv->chan, value, FieldName()));
+        p2p::auto_ptr<PVIF> putpvif(channel->pv->builder->attach(value, FieldName()));
        try{
            DBScanLocker L(chan);
-            putpvif->get(*changed, doProc);
+            ret = putpvif->get(*changed, doProc);

        }catch(std::runtime_error& e){
            ret = pvd::Status::error(e.what());
@@ -404,7 +426,8 @@ void PDBSinglePut::get()
    changed->clear();
    {
        DBScanLocker L(pvif->chan);
-        pvif->put(*changed, DBE_VALUE|DBE_ALARM|DBE_PROPERTY, NULL);
+        LocalFL FL(NULL, pvif->chan);
+        pvif->put(*changed, DBE_VALUE|DBE_ALARM|DBE_PROPERTY, FL.pfl);
    }
    //TODO: report unused fields as changed?
    changed->clear();
@@ -5,6 +5,7 @@

 #include <dbAccess.h>
 #include <dbNotify.h>
+#include <asLib.h>

 #include <dbEvent.h>

@@ -15,11 +16,9 @@
 #include "pvif.h"
 #include "pdb.h"

-#include <shareLib.h>
-
 struct PDBSingleMonitor;

-struct epicsShareClass PDBSinglePV : public PDBPV
+struct QSRV_API PDBSinglePV : public PDBPV
 {
    POINTER_DEFINITIONS(PDBSinglePV);
    weak_pointer weakself;
@@ -31,6 +30,8 @@ struct epicsShareClass PDBSinglePV : public PDBPV
     * is locked.
     */
    DBCH chan;
+    // used for DBE_PROPERTY subscription when chan has filters
+    DBCH chan2;
    PDBProvider::shared_pointer provider;

    // only for use in pdb_single_event()
@@ -78,6 +79,9 @@ struct PDBSingleChannel : public BaseChannel,
    POINTER_DEFINITIONS(PDBSingleChannel);

    PDBSinglePV::shared_pointer pv;
+    // storage referenced from aspvt
+    ASCred cred;
+    ASCLIENT aspvt;

    static size_t num_instances;

@@ -0,0 +1,89 @@
+#ifndef PV_QSRV_H
+#define PV_QSRV_H
+
+#include <epicsVersion.h>
+
+#ifndef VERSION_INT
+#  define VERSION_INT(V,R,M,P) ( ((V)<<24) | ((R)<<16) | ((M)<<8) | (P))
+#endif
+
+/* generated header with EPICS_QSRV_*_VERSION macros */
+#  include <pv/qsrvVersionNum.h>
+
+#define QSRV_VERSION_INT VERSION_INT(EPICS_QSRV_MAJOR_VERSION, EPICS_QSRV_MINOR_VERSION, EPICS_QSRV_MAINTENANCE_VERSION, !(EPICS_QSRV_DEVELOPMENT_FLAG))
+
+#define QSRV_ABI_VERSION_INT VERSION_INT(EPICS_QSRV_ABI_MAJOR_VERSION, EPICS_QSRV_ABI_MINOR_VERSION, 0, 0)
+
+#if defined(QSRV_API_BUILDING) && defined(epicsExportSharedSymbols)
+#  error Use QSRV_API or shareLib.h not both
+#endif
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+
+#  if defined(QSRV_API_BUILDING) && defined(EPICS_BUILD_DLL)
+/* building library as dll */
+#    define QSRV_API __declspec(dllexport)
+#  elif !defined(QSRV_API_BUILDING) && defined(EPICS_CALL_DLL)
+/* calling library in dll form */
+#    define QSRV_API __declspec(dllimport)
+#  endif
+
+#elif __GNUC__ >= 4
+#  define QSRV_API __attribute__ ((visibility("default")))
+#endif
+
+#ifndef QSRV_API
+#  define QSRV_API
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct link; /* aka. DBLINK from link.h */
+
+/** returns QSRV_VERSION_INT captured at compilation time */
+QSRV_API unsigned qsrvVersion(void);
+
+/** returns QSRV_ABI_VERSION_INT captured at compilation time */
+QSRV_API unsigned qsrvABIVersion(void);
+
+QSRV_API
+long dbLoadGroup(const char* fname);
+
+QSRV_API void testqsrvWaitForLinkEvent(struct link *plink);
+
+/** Call before testIocShutdownOk()
+ @code
+   testdbPrepare();
+   ...
+   testIocInitOk();
+   ...
+   testqsrvShutdownOk();
+   testIocShutdownOk();
+   testqsrvCleanup();
+   testdbCleanup();
+ @endcode
+ */
+QSRV_API void testqsrvShutdownOk(void);
+
+/** Call after testIocShutdownOk() and before testdbCleanup()
+ @code
+   testdbPrepare();
+   ...
+   testIocInitOk();
+   ...
+   testqsrvShutdownOk();
+   testIocShutdownOk();
+   testqsrvCleanup();
+   testdbCleanup();
+ @endcode
+ */
+QSRV_API void testqsrvCleanup(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PV_QSRV_H */
@@ -0,0 +1,9 @@
+#ifndef PV_QSRV_H
+#  error qsrvVersionNum.h should never be included directly.  Include <pv/qsrv.h>
+#endif
+#define EPICS_QSRV_MAJOR_VERSION @EPICS_QSRV_MAJOR_VERSION@
+#define EPICS_QSRV_MINOR_VERSION @EPICS_QSRV_MINOR_VERSION@
+#define EPICS_QSRV_MAINTENANCE_VERSION @EPICS_QSRV_MAINTENANCE_VERSION@
+#define EPICS_QSRV_DEVELOPMENT_FLAG @EPICS_QSRV_DEVELOPMENT_FLAG@
+#define EPICS_QSRV_ABI_MAJOR_VERSION @EPICS_QSRV_ABI_MAJOR_VERSION@
+#define EPICS_QSRV_ABI_MINOR_VERSION @EPICS_QSRV_ABI_MINOR_VERSION@
@@ -10,25 +10,53 @@
 #include <dbCommon.h>
 #include <dbLink.h>
 #include <dbScan.h>
-#include <epicsExport.h>
 #include <errlog.h>
 #include <initHooks.h>
 #include <alarm.h>
 #include <epicsExit.h>
 #include <epicsAtomic.h>
-#include <epicsThreadPool.h>
 #include <link.h>
 #include <dbJLink.h>
+#include <errlog.h>
+#include <epicsThread.h>
+#include <epicsMutex.h>
+#include <epicsEvent.h>
+#include <dbChannel.h>
+#include <dbStaticLib.h>
+#include <dbLock.h>
+#include <dbEvent.h>
+#include <epicsVersion.h>

-#include <pv/pvAccess.h>
-#include <pv/clientFactory.h>
+#include <pv/status.h>
+#include <pv/bitSet.h>
+#include <pv/pvData.h>
+
+#include <pva/client.h>
+#include <pv/anyscalar.h>
+#include <pv/thread.h>
+#include <pv/lock.h>
+#include <pv/iocshelper.h>
+
+#include <pv/sharedPtr.h>

 #include "helper.h"
-#include "iocshelper.h"
 #include "pvif.h"
+#include "tpool.h"

-extern int pvaLinkDebug;
-extern int pvaLinkIsolate;
+extern "C" {
+    QSRV_API extern int pvaLinkDebug;
+    QSRV_API extern int pvaLinkIsolate;
+    QSRV_API extern int pvaLinkNWorkers;
+}
+
+#if 0
+#  define TRACE(X) std::cerr<<"PVAL "<<__func__<<" " X <<"\n"
+#else
+#  define TRACE(X) do {} while(0)
+#endif
+
+// pvaLink and pvaLinkChannel have ->debug
+#define DEBUG(OBJ, X) do{ if((OBJ)->debug) std::cout X<<"\n"; }while(0)

 namespace pvalink {

@@ -41,289 +69,173 @@ typedef epicsGuardRelease<pvd::Mutex> UnGuard;
 struct pvaLink;
 struct pvaLinkChannel;

-struct pvaGlobal_t {
-    pva::ChannelProvider::shared_pointer provider;
+extern lset pva_lset;
+extern jlif lsetPVA;

-    pvd::StructureConstPtr reqtype;
-    pvd::PVDataCreatePtr create;
+struct pvaLinkConfig : public jlink
+{
+    // configuration, output of jlif parsing
+    //! Channel (aka PV) name string
+    std::string channelName;
+    //! sub-field within addressed PVStructure
+    std::string fieldName;
+
+    size_t queueSize;
+
+    enum pp_t {
+        NPP,
+        Default, // for put() only.  For monitor, treated as NPP
+        PP,      // for put() only,  For monitor, treated as NPP
+        CP,      // for monitor only, put treats as pp
+        CPP,     // for monitor only, put treats as pp
+    } pp;
+    enum ms_t {
+        NMS,
+        MS,
+        MSI,
+    } ms;
+
+    bool defer, pipeline, time, retry, local, always;
+    int monorder;
+
+    // internals used by jlif parsing
+    std::string jkey;
+
+    pvaLinkConfig();
+    virtual ~pvaLinkConfig();
+};
+
+struct pvaGlobal_t {
+    pvac::ClientProvider provider_local,
+                         provider_remote;
+
+    const pvd::PVDataCreatePtr create;
+
+    WorkQueue queue;

    pvd::Mutex lock;

-    struct Scan {
-        // the PVA channel which triggered this scan
-        std::tr1::weak_ptr<pvaLinkChannel> chan;
-        bool usecached;
-        Scan() :usecached(false) {}
-    };
+    bool running; // set after dbEvent is initialized and safe to use

-    epicsThreadPrivate<Scan> scanmagic;
-    epicsThreadPool *scanpool;
-
-    typedef std::map<std::string, std::tr1::shared_ptr<pvaLinkChannel> > channels_t;
+    // a tuple of channel name and printed pvRequest (or Monitor)
+    typedef std::pair<std::string, std::string> channels_key_t;
+    // pvaLinkChannel dtor prunes dead entires
+    typedef std::map<channels_key_t, std::tr1::weak_ptr<pvaLinkChannel> > channels_t;
+    // Cache of active Channels (really about caching Monitor)
    channels_t channels;

-    std::tr1::shared_ptr<pvaLinkChannel> connect(const char *name);
-
    pvaGlobal_t();
-    ~pvaGlobal_t()
-    {
-        provider->destroy();
-        epicsThreadPoolDestroy(scanpool);
-    }
+    ~pvaGlobal_t();
 };
 extern pvaGlobal_t *pvaGlobal;

-struct pvaLinkChannel : public pva::ChannelRequester, pva::MonitorRequester,
-        std::tr1::enable_shared_from_this<pvaLinkChannel>
+struct pvaLinkChannel : public pvac::ClientChannel::MonitorCallback,
+                        public pvac::ClientChannel::PutCallback,
+                        public epicsThreadRunable,
+                        public std::tr1::enable_shared_from_this<pvaLinkChannel>
 {
-    const std::string name;
+    const pvaGlobal_t::channels_key_t key; // tuple of (channelName, pvRequest key)
+    const pvd::PVStructure::const_shared_pointer pvRequest; // used with monitor

-    static size_t refs;
-
-    typedef std::set<pvaLink*> links_t;
-    links_t links;
+    static size_t num_instances;

    pvd::Mutex lock;
+    epicsEvent run_done; // used by testing code

-    pva::Channel::shared_pointer chan;
+    pvac::ClientChannel chan;
+    pvac::Monitor op_mon;
+    pvac::Operation op_put;

-    pva::Monitor::shared_pointer chanmon;
-    //pva::ChannelPut::shared_pointer chanput;
+    std::string providerName;
+    size_t num_disconnect, num_type_change;
+    bool connected;
+    bool connected_latched; // connection status at the run()
+    bool isatomic;
+    bool queued; // added to WorkQueue
+    bool debug; // set if any jlink::debug is set
+    std::tr1::shared_ptr<const void> previous_root;

-    pvd::PVStructurePtr lastval;
-    pvd::PVScalarPtr isatomic;
+    struct LinkSort {
+        bool operator()(const pvaLink *L, const pvaLink *R) const;
+    };

-    epicsJob *scanjob;
-    std::tr1::shared_ptr<pvaLinkChannel> scanself; // create ref loop while scan is queued
-    bool scanatomic;
+    typedef std::set<pvaLink*, LinkSort> links_t;

-    pvaLinkChannel(const char *name)
-        :name(name)
-        ,scanjob(epicsJobCreate(pvaGlobal->scanpool, &pvaLinkChannel::scan, this))
-        ,scanatomic(false)
-    {
-        if(!scanjob)
-            throw std::runtime_error("failed to create job for pvaLink");
-        epics::atomic::increment(refs);
-    }
-    virtual ~pvaLinkChannel() {
-        Guard G(lock);
-        assert(links.empty());
-        epicsJobDestroy(scanjob);
-        scanjob = NULL;
-        epics::atomic::decrement(refs);
-        std::cerr<<"pvaLinkChannel: destroy "<<name<<"\n";
-    }
+    // list of currently attached links.  maintained by pvaLink ctor/dtor
+    // TODO: sort by PHAS
+    links_t links;

-    void doConnect() {
-        // TODO: local PVA?
-        Guard G(lock);
-        chan = pvaGlobal->provider->createChannel(name, shared_from_this());
-        channelStateChange(chan, chan->getConnectionState());
-    }
-    void doClose() {
-        Guard G(lock);
-        errlogPrintf("pvaLink closing %s\n", name.c_str());
-        channelStateChange(chan, pva::Channel::DESTROYED);
-        chan->destroy();
-        chan.reset();
-        std::cerr<<"pvaLink: channel destroy "<<name<<"\n";
-    }
+    // set when 'links' is modified to trigger re-compute of record scan list
+    bool links_changed;

-    void triggerProc(bool atomic=false, bool force=false);
+    pvaLinkChannel(const pvaGlobal_t::channels_key_t& key, const epics::pvData::PVStructure::const_shared_pointer &pvRequest);
+    virtual ~pvaLinkChannel();

-    static void scan(void* arg, epicsJobMode mode);
+    void open();
+    void put(bool force=false); // begin Put op.

-    virtual std::string getRequesterName() { return "pvaLink"; }
-    virtual void message(std::string const & message, pva::MessageType messageType)
-    {
-        errlogPrintf("%s pvaLink \"%s\": %s\n",
-                     pvd::getMessageTypeName(messageType).c_str(),
-                     name.c_str(),
-                     message.c_str());
-    }
+    // pvac::ClientChanel::MonitorCallback
+    virtual void monitorEvent(const pvac::MonitorEvent& evt) OVERRIDE FINAL;

-    virtual void channelCreated(const epics::pvData::Status& status, pva::Channel::shared_pointer const & channel)
-    {
-        if(!status.isSuccess()) {
-            errlogPrintf("pvaLink create fails %s: %s\n", name.c_str(), status.getMessage().c_str());
-            return;
-        }
-        Guard G(lock);
-        //assert(chan==channel); // may be called before createChannel() returns
-        chan = channel;
-    }
+    // pvac::ClientChanel::PutCallback
+    virtual void putBuild(const epics::pvData::StructureConstPtr& build, pvac::ClientChannel::PutCallback::Args& args) OVERRIDE FINAL;
+    virtual void putDone(const pvac::PutEvent& evt) OVERRIDE FINAL;
+private:
+    virtual void run() OVERRIDE FINAL;
+    void run_dbProcess(size_t idx); // idx is index in scan_records

-    virtual void channelStateChange(pva::Channel::shared_pointer const & channel, pva::Channel::ConnectionState connectionState);
+    // ==== Treat remaining as local to run()

-    virtual void monitorConnect(pvd::Status const & status,
-                                pva::Monitor::shared_pointer const & monitor,
-                                pvd::StructureConstPtr const & structure);
-
-    virtual void monitorEvent(pva::Monitor::shared_pointer const & monitor);
-
-    virtual void unlisten(pva::Monitor::shared_pointer const & monitor)
-    {
-        // what to do??
-    }
+    std::vector<dbCommon*> scan_records;
+    std::vector<bool> scan_check_passive;
+    std::vector<epics::pvData::BitSet> scan_changed;

+    DBManyLock atomic_lock;
 };

-struct pvaLink : public jlink
+struct pvaLink : public pvaLinkConfig
 {
-    static size_t refs;
+    static size_t num_instances;
+
+    bool alive; // attempt to catch some use after free

    DBLINK * plink; // may be NULL
-    unsigned linkmods;
-    unsigned parse_level;
-
-    std::string name, field;
-    const pva::Channel::shared_pointer chan;
-    bool alive; // attempt to catch some use after free

    std::tr1::shared_ptr<pvaLinkChannel> lchan;

-    pvd::PVScalarPtr valueS;
-    pvd::PVScalarArray::shared_pointer valueA;
-    pvd::PVScalar::shared_pointer sevr, sec, nsec;
-    pvd::ScalarType etype;
+    bool used_scratch, used_queue;
+    pvd::shared_vector<const void> put_scratch, put_queue;

-    struct Value {
-        bool valid;
-        bool scalar;
-        pvd::ScalarType etype;
-        pvd::shared_vector<const void> valueA;
-        dbrbuf valueS;
-        epicsUInt16 sevr;
-        epicsTimeStamp time;
-        Value() :valid(false) {}
-        void clear() {
-            valid = false;
-            valueA.clear();
-        }
-    };
+    // cached fields from channel op_mon
+    // updated in onTypeChange()
+    epics::pvData::PVField::const_shared_pointer fld_value;
+    epics::pvData::PVScalar::const_shared_pointer fld_severity,
+                                                  fld_seconds,
+                                                  fld_nanoseconds;
+    epics::pvData::PVStructure::const_shared_pointer fld_display,
+                                                     fld_control,
+                                                     fld_valueAlarm;
+    epics::pvData::BitSet proc_changed;

-    Value atomcache;
+    // cached snapshot of alarm and  timestamp
+    // captured in pvaGetValue().
+    // we choose not to ensure consistency with display/control meta-data
+    epicsTimeStamp snap_time;
+    short snap_severity;

-    pvaLink()
-        :plink(0)
-        ,linkmods(0)
-        ,parse_level(0)
-        ,alive(true)
-    {
-        epics::atomic::increment(refs);
-        //TODO: valgrind tells me these aren't initialized by Base, but probably should be.
-        parseDepth = 0;
-        parent = 0;
-    }
+    pvaLink();
+    virtual ~pvaLink();

-    void open()
-    {
-        if(this->name.empty())
-            throw std::logic_error("open() w/o target PV name");
-        this->name = name;
-        //TODO: how to distinguish "record.FLD" from pva "channel.subfield"?
-        size_t dot = this->name.find_first_of('.');
-        if(dot!=this->name.npos) {
-            field = this->name.substr(dot+1);
-            this->name = this->name.substr(0, dot);
-        }
-        lchan = pvaGlobal->connect(this->name.c_str());
-        Guard G(lchan->lock);
-        lchan->links.insert(this);
-        if(lchan->lastval)
-            attach();
-    }
-    ~pvaLink()
-    {
-        alive = false;
-        if(lchan) { // may be NULL if parsing fails
-            Guard G(lchan->lock);
-            detach();
-            lchan->links.erase(this);
-            if(lchan->links.empty()) {
-                pvaGlobal->channels.erase(lchan->name);
-                lchan->doClose();
-            }
-        }
-        epics::atomic::decrement(refs);
-    }
+    // returns pvRequest to be used with monitor
+    pvd::PVStructurePtr makeRequest();

-    void detach()
-    {
-        valueS.reset();
-        valueA.reset();
-        sevr.reset();
-        sec.reset();
-        nsec.reset();
-    }
+    bool valid() const;

-    bool attach()
-    {
-        pvd::PVStructurePtr base(lchan->lastval);
+    // fetch a sub-sub-field of the top monitored field.
+    pvd::PVField::const_shared_pointer getSubField(const char *name);

-        if(!field.empty())
-            base = base->getSubField<pvd::PVStructure>(field);
-        if(!base) {
-            errlogPrintf("pvaLink not %s%c%s\n", name.c_str(), field.empty() ? ' ' : '.', field.c_str());
-            return false;
-        }
-
-        pvd::PVFieldPtr value(base->getSubField("value"));
-        switch(value->getField()->getType())
-        {
-        case pvd::scalar:
-            valueS = std::tr1::static_pointer_cast<pvd::PVScalar>(value);
-            etype = valueS->getScalar()->getScalarType();
-            break;
-        case pvd::scalarArray:
-            valueA = std::tr1::static_pointer_cast<pvd::PVScalarArray>(value);
-            etype = valueA->getScalarArray()->getElementType();
-            break;
-        default:
-            errlogPrintf("pvaLink not .value : %s%c%s\n", name.c_str(), field.empty() ? ' ' : '.', field.c_str());
-            return false;
-        }
-
-        sevr = base->getSubField<pvd::PVScalar>("alarm.severity");
-        sec = base->getSubField<pvd::PVScalar>("timeStamp.secondsPastEpoch");
-        nsec = base->getSubField<pvd::PVScalar>("timeStamp.nanoseconds");
-        return true;
-    }
-
-    void get(Value& v)
-    {
-        if(valueA) {
-            valueA->getAs<const void>(v.valueA);
-            v.etype = v.valueA.original_type();
-            v.scalar = false;
-
-        } else if(valueS) {
-
-            switch(etype) {
-#define CASE(BASETYPE, PVATYPE, DBFTYPE, PVACODE) case pvd::pv ## PVACODE: v.valueS.dbf_##DBFTYPE = valueS->getAs<PVATYPE>(); break;
-#define CASE_SQUEEZE_INT64
-#include "pvatypemap.h"
-#undef CASE_SQUEEZE_INT64
-#undef CASE
-            case pvd::pvString: {
-                strncpy(v.valueS.dbf_STRING, valueS->getAs<std::string>().c_str(), sizeof(v.valueS.dbf_STRING));
-                v.valueS.dbf_STRING[sizeof(v.valueS.dbf_STRING)-1] = '\0';
-            }
-                break;
-            default:
-                throw std::runtime_error("putValue unsupported DBR code");
-            }
-
-            v.etype = etype;
-            v.scalar = true;
-        }
-
-        v.sevr = sevr->getAs<epicsUInt16>();
-        v.time.secPastEpoch = sec->getAs<epicsUInt32>()-POSIX_TIME_AT_EPICS_EPOCH;
-        v.time.nsec = nsec->getAs<epicsUInt32>();
-        v.valid = true;
-    }
+    void onDisconnect();
+    void onTypeChange();
 };


@@ -0,0 +1,382 @@
+
+#include <alarm.h>
+
+#include <pv/reftrack.h>
+
+#include "pvalink.h"
+
+int pvaLinkNWorkers = 1;
+
+namespace pvalink {
+
+pvaGlobal_t *pvaGlobal;
+
+
+pvaGlobal_t::pvaGlobal_t()
+    :create(pvd::getPVDataCreate())
+    ,queue("PVAL")
+    ,running(false)
+{
+    // worker should be above PVA worker priority?
+    queue.start(std::max(1, pvaLinkNWorkers), epicsThreadPriorityMedium);
+}
+
+pvaGlobal_t::~pvaGlobal_t()
+{
+}
+
+size_t pvaLinkChannel::num_instances;
+size_t pvaLink::num_instances;
+
+
+bool pvaLinkChannel::LinkSort::operator()(const pvaLink *L, const pvaLink *R) const {
+    if(L->monorder==R->monorder)
+        return L < R;
+    return L->monorder < R->monorder;
+}
+
+// being called with pvaGlobal::lock held
+pvaLinkChannel::pvaLinkChannel(const pvaGlobal_t::channels_key_t &key, const pvd::PVStructure::const_shared_pointer& pvRequest)
+    :key(key)
+    ,pvRequest(pvRequest)
+    ,num_disconnect(0u)
+    ,num_type_change(0u)
+    ,connected(false)
+    ,connected_latched(false)
+    ,isatomic(false)
+    ,queued(false)
+    ,debug(false)
+    ,links_changed(false)
+{}
+
+pvaLinkChannel::~pvaLinkChannel() {
+    {
+        Guard G(pvaGlobal->lock);
+        pvaGlobal->channels.erase(key);
+    }
+
+    Guard G(lock);
+
+    assert(links.empty());
+    REFTRACE_DECREMENT(num_instances);
+}
+
+void pvaLinkChannel::open()
+{
+    Guard G(lock);
+
+    try {
+        chan = pvaGlobal->provider_local.connect(key.first);
+        DEBUG(this, <<key.first<<" OPEN Local");
+        providerName = pvaGlobal->provider_local.name();
+    } catch(std::exception& e){
+        // The PDBProvider doesn't have a way to communicate to us
+        // whether this is an invalid record or group name,
+        // or if this is some sort of internal error.
+        // So we are forced to assume it is an invalid name.
+        DEBUG(this, <<key.first<<" OPEN Not local "<<e.what());
+    }
+    if(!pvaLinkIsolate && !chan) {
+        chan = pvaGlobal->provider_remote.connect(key.first);
+        DEBUG(this, <<key.first<<" OPEN Remote ");
+        providerName = pvaGlobal->provider_remote.name();
+    }
+
+    op_mon = chan.monitor(this, pvRequest);
+
+    REFTRACE_INCREMENT(num_instances);
+}
+
+static
+pvd::StructureConstPtr putRequestType = pvd::getFieldCreate()->createFieldBuilder()
+        ->addNestedStructure("field")
+        ->endNested()
+        ->addNestedStructure("record")
+            ->addNestedStructure("_options")
+                ->add("block", pvd::pvBoolean)
+                ->add("process", pvd::pvString) // "true", "false", or "passive"
+            ->endNested()
+        ->endNested()
+        ->createStructure();
+
+// call with channel lock held
+void pvaLinkChannel::put(bool force)
+{
+    pvd::PVStructurePtr pvReq(pvd::getPVDataCreate()->createPVStructure(putRequestType));
+    pvReq->getSubFieldT<pvd::PVBoolean>("record._options.block")->put(false); // TODO: some way to expose completion...
+
+    unsigned reqProcess = 0;
+    bool doit = force;
+    for(links_t::iterator it(links.begin()), end(links.end()); it!=end; ++it)
+    {
+        pvaLink *link = *it;
+
+        if(!link->used_scratch) continue;
+
+        pvd::shared_vector<const void> temp;
+        temp.swap(link->put_scratch);
+        link->used_scratch = false;
+        temp.swap(link->put_queue);
+        link->used_queue = true;
+
+        doit = true;
+
+        switch(link->pp) {
+        case pvaLink::NPP:
+            reqProcess |= 1;
+            break;
+        case pvaLink::Default:
+            break;
+        case pvaLink::PP:
+        case pvaLink::CP:
+        case pvaLink::CPP:
+            reqProcess |= 2;
+            break;
+        }
+    }
+
+    /* By default, use remote default (passive).
+     * Request processing, or not, if any link asks.
+     * Prefer PP over NPP if both are specified.
+     *
+     * TODO: per field granularity?
+     */
+    const char *proc = "passive";
+    if((reqProcess&2) || force) {
+        proc = "true";
+    } else if(reqProcess&1) {
+        proc = "false";
+    }
+    pvReq->getSubFieldT<pvd::PVString>("record._options.process")->put(proc);
+
+    DEBUG(this, <<key.first<<"Start put "<<doit);
+    if(doit) {
+        // start net Put, cancels in-progress put
+        op_put = chan.put(this, pvReq);
+    }
+}
+
+void pvaLinkChannel::putBuild(const epics::pvData::StructureConstPtr& build, pvac::ClientChannel::PutCallback::Args& args)
+{
+    Guard G(lock);
+
+    pvd::PVStructurePtr top(pvaGlobal->create->createPVStructure(build));
+
+    for(links_t::iterator it(links.begin()), end(links.end()); it!=end; ++it)
+    {
+        pvaLink *link = *it;
+
+        if(!link->used_queue) continue;
+        link->used_queue = false; // clear early so unexpected exception won't get us in a retry loop
+
+        pvd::PVFieldPtr value(link->fieldName.empty() ? pvd::PVFieldPtr(top) : top->getSubField(link->fieldName));
+        if(value && value->getField()->getType()==pvd::structure) {
+            // maybe drill into NTScalar et al.
+            pvd::PVFieldPtr sub(static_cast<pvd::PVStructure*>(value.get())->getSubField("value"));
+            if(sub)
+                value.swap(sub);
+        }
+
+        if(!value) continue; // TODO: how to signal error?
+
+        pvd::PVStringArray::const_svector choices; // TODO populate from op_mon
+
+        DEBUG(this, <<key.first<<" <- "<<value->getFullName());
+        copyDBF2PVD(link->put_queue, value, args.tosend, choices);
+
+        link->put_queue.clear();
+    }
+    DEBUG(this, <<key.first<<" Put built");
+
+    args.root = top;
+}
+
+void pvaLinkChannel::putDone(const pvac::PutEvent& evt)
+{
+    if(evt.event==pvac::PutEvent::Fail) {
+        errlogPrintf("%s PVA link put ERROR: %s\n", key.first.c_str(), evt.message.c_str());
+    }
+
+    Guard G(lock);
+
+    DEBUG(this, <<key.first<<" Put result "<<evt.event);
+
+    op_put = pvac::Operation();
+
+    if(evt.event==pvac::PutEvent::Success) {
+        // see if we need start a queue'd put
+        put();
+    }
+}
+
+void pvaLinkChannel::monitorEvent(const pvac::MonitorEvent& evt)
+{
+    bool queue = false;
+
+    {
+        DEBUG(this, <<key.first<<" EVENT "<<evt.event);
+        Guard G(lock);
+
+        switch(evt.event) {
+        case pvac::MonitorEvent::Disconnect:
+        case pvac::MonitorEvent::Data:
+            connected = evt.event == pvac::MonitorEvent::Data;
+            queue = true;
+            break;
+        case pvac::MonitorEvent::Cancel:
+            break; // no-op
+        case pvac::MonitorEvent::Fail:
+            connected = false;
+            queue = true;
+            errlogPrintf("%s: PVA link monitor ERROR: %s\n", chan.name().c_str(), evt.message.c_str());
+            break;
+        }
+
+        if(queued)
+            return; // already scheduled
+
+        queued = queue;
+    }
+
+    if(queue) {
+        pvaGlobal->queue.add(shared_from_this());
+    }
+}
+
+// the work in calling dbProcess() which is common to
+// both dbScanLock() and dbScanLockMany()
+void pvaLinkChannel::run_dbProcess(size_t idx)
+{
+    dbCommon *precord = scan_records[idx];
+
+    if(scan_check_passive[idx] && precord->scan!=0) {
+        return;
+
+    } else if(connected_latched && !op_mon.changed.logical_and(scan_changed[idx])) {
+        return;
+
+    } else if (precord->pact) {
+        if (precord->tpro)
+            printf("%s: Active %s\n",
+                epicsThreadGetNameSelf(), precord->name);
+        precord->rpro = TRUE;
+
+    }
+    dbProcess(precord);
+}
+
+// Running from global WorkQueue thread
+void pvaLinkChannel::run()
+{
+    bool requeue = false;
+    {
+        Guard G(lock);
+
+        queued = false;
+
+        connected_latched = connected;
+
+        // pop next update from monitor queue.
+        // still under lock to safeguard concurrent calls to lset functions
+        if(connected && !op_mon.poll()) {
+            DEBUG(this, <<key.first<<" RUN "<<"empty");
+            run_done.signal();
+            return; // monitor queue is empty, nothing more to do here
+        }
+
+        DEBUG(this, <<key.first<<" RUN "<<(connected_latched?"connected":"disconnected"));
+
+        assert(!connected || !!op_mon.root);
+
+        if(!connected) {
+            num_disconnect++;
+
+            // cancel pending put operations
+            op_put = pvac::Operation();
+
+            for(links_t::iterator it(links.begin()), end(links.end()); it!=end; ++it)
+            {
+                pvaLink *link = *it;
+                link->onDisconnect();
+            }
+
+            // Don't clear previous_root on disconnect.
+            // We will usually re-connect with the same type,
+            // and may get back the same PVStructure.
+
+        } else if(previous_root.get() != (const void*)op_mon.root.get()) {
+            num_type_change++;
+
+            for(links_t::iterator it(links.begin()), end(links.end()); it!=end; ++it)
+            {
+                pvaLink *link = *it;
+                link->onTypeChange();
+            }
+
+            previous_root = std::tr1::static_pointer_cast<const void>(op_mon.root);
+        }
+
+        // at this point we know we will re-queue, but not immediately
+        // so an expected error won't get us stuck in a tight loop.
+        requeue = queued = connected_latched;
+
+        if(links_changed) {
+            // a link has been added or removed since the last update.
+            // rebuild our cached list of records to (maybe) process.
+
+            scan_records.clear();
+            scan_check_passive.clear();
+            scan_changed.clear();
+
+            for(links_t::iterator it(links.begin()), end(links.end()); it!=end; ++it)
+            {
+                pvaLink *link = *it;
+                assert(link && link->alive);
+
+                if(!link->plink) continue;
+
+                // NPP and none/Default don't scan
+                // PP, CP, and CPP do scan
+                // PP and CPP only if SCAN=Passive
+                if(link->pp != pvaLink::PP && link->pp != pvaLink::CPP && link->pp != pvaLink::CP)
+                    continue;
+
+                scan_records.push_back(link->plink->precord);
+                scan_check_passive.push_back(link->pp != pvaLink::CP);
+                scan_changed.push_back(link->proc_changed);
+            }
+
+            DBManyLock ML(scan_records);
+
+            atomic_lock.swap(ML);
+
+            links_changed = false;
+        }
+    }
+
+    if(scan_records.empty()) {
+        // Nothing to do, so don't bother locking
+
+    } else if(isatomic && scan_records.size() > 1u) {
+        DBManyLocker L(atomic_lock);
+
+        for(size_t i=0, N=scan_records.size(); i<N; i++) {
+            run_dbProcess(i);
+        }
+
+    } else {
+        for(size_t i=0, N=scan_records.size(); i<N; i++) {
+            DBScanLocker L(scan_records[i]);
+            run_dbProcess(i);
+        }
+    }
+
+    if(requeue) {
+        // re-queue until monitor queue is empty
+        pvaGlobal->queue.add(shared_from_this());
+    } else {
+        run_done.signal();
+    }
+}
+
+} // namespace pvalink
@@ -0,0 +1,321 @@
+#include <sstream>
+
+#include <epicsStdio.h> // redirects stdout/stderr
+
+#include "pvalink.h"
+
+namespace pvalink {
+pvaLinkConfig::pvaLinkConfig()
+    :queueSize(4)
+    ,pp(Default)
+    ,ms(NMS)
+    ,defer(false)
+    ,pipeline(false)
+    ,time(false)
+    ,retry(false)
+    ,local(false)
+    ,always(false)
+    ,monorder(0)
+{}
+pvaLinkConfig::~pvaLinkConfig() {}
+}
+
+namespace {
+
+using namespace pvalink;
+
+/* link options.
+ *
+ * "pvname" # short-hand, sets PV name only
+ *
+ * {
+ *  "pv":"name",
+ *  "field":"blah.foo",
+ *  "Q":5,
+ *  "pipeline":false,
+ *  "proc":true, // false, true, none, "", "NPP", "PP", "CP", "CPP"
+ *  "sevr":true, // false, true, "NMS", "MS", "MSI", "MSS"
+ *  "time":true, // false, true
+ *  "monorder":#,// order of processing during CP scan
+ *  "defer":true,// whether to immediately start Put, or only queue value to be sent
+ *  "retry":true,// queue Put while disconnected, and retry on connect
+ *  "always":true,// CP/CPP updates always process a like, even if its input field hasn't changed
+ *  "local":false,// Require local channel
+ * }
+ */
+
+jlink* pva_alloc_jlink(short dbr)
+{
+    try {
+        TRACE();
+        return new pvaLink;
+
+    }catch(std::exception& e){
+        errlogPrintf("Error allocating pva link: %s\n", e.what());
+        return NULL;
+    }
+}
+
+#define TRY  pvaLinkConfig *pvt = static_cast<pvaLinkConfig*>(pjlink); (void)pvt; try
+#define CATCH(RET) catch(std::exception& e){ \
+    errlogPrintf("Error in %s link: %s\n", __FUNCTION__, e.what()); \
+    return RET; }
+
+void pva_free_jlink(jlink *pjlink)
+{
+    TRY {
+        TRACE();
+        delete pvt;
+    }catch(std::exception& e){
+        errlogPrintf("Error freeing pva link: %s\n", e.what());
+    }
+}
+
+jlif_result pva_parse_null(jlink *pjlink)
+{
+    TRY {
+        TRACE(<<pvt->jkey<<" ");
+        if(pvt->parseDepth!=1) {
+            // ignore
+        } else if(pvt->jkey == "proc") {
+            pvt->pp = pvaLinkConfig::Default;
+        } else if(pvt->jkey == "sevr") {
+            pvt->ms = pvaLinkConfig::NMS;
+        } else if(pvt->jkey == "local") {
+            pvt->local = false; // alias for local:false
+        } else if(pvt->debug) {
+            printf("pva link parsing unknown none depth=%u key=\"%s\"\n",
+                   pvt->parseDepth, pvt->jkey.c_str());
+        }
+
+        pvt->jkey.clear();
+        return jlif_continue;
+    }CATCH(jlif_stop)
+}
+
+jlif_result pva_parse_bool(jlink *pjlink, int val)
+{
+    TRY {
+        TRACE(<<pvt->jkey<<" "<<(val?"true":"false"));
+        if(pvt->parseDepth!=1) {
+            // ignore
+        } else if(pvt->jkey == "proc") {
+            pvt->pp = val ? pvaLinkConfig::PP : pvaLinkConfig::NPP;
+        } else if(pvt->jkey == "sevr") {
+            pvt->ms = val ? pvaLinkConfig::MS : pvaLinkConfig::NMS;
+        } else if(pvt->jkey == "defer") {
+            pvt->defer = !!val;
+        } else if(pvt->jkey == "pipeline") {
+            pvt->pipeline = !!val;
+        } else if(pvt->jkey == "time") {
+            pvt->time = !!val;
+        } else if(pvt->jkey == "retry") {
+            pvt->retry = !!val;
+        } else if(pvt->jkey == "local") {
+            pvt->local = !!val;
+        } else if(pvt->jkey == "always") {
+            pvt->always = !!val;
+        } else if(pvt->debug) {
+            printf("pva link parsing unknown integer depth=%u key=\"%s\" value=%s\n",
+                   pvt->parseDepth, pvt->jkey.c_str(), val ? "true" : "false");
+        }
+
+        pvt->jkey.clear();
+        return jlif_continue;
+    }CATCH(jlif_stop)
+}
+
+jlif_result pva_parse_integer(jlink *pjlink, long long val)
+{
+    TRY {
+        TRACE(<<pvt->jkey<<" "<<val);
+        if(pvt->parseDepth!=1) {
+            // ignore
+        } else if(pvt->jkey == "Q") {
+            pvt->queueSize = val < 1 ? 1 : size_t(val);
+        } else if(pvt->jkey == "monorder") {
+            pvt->monorder = std::max(-1024, std::min(int(val), 1024));
+        } else if(pvt->debug) {
+            printf("pva link parsing unknown integer depth=%u key=\"%s\" value=%lld\n",
+                   pvt->parseDepth, pvt->jkey.c_str(), val);
+        }
+
+        pvt->jkey.clear();
+        return jlif_continue;
+    }CATCH(jlif_stop)
+}
+
+jlif_result pva_parse_string(jlink *pjlink, const char *val, size_t len)
+{
+    TRY{
+        std::string sval(val, len);
+        TRACE(<<pvt->jkey<<" "<<sval);
+        if(pvt->parseDepth==0 || (pvt->parseDepth==1 && pvt->jkey=="pv")) {
+            pvt->channelName = sval;
+
+        } else if(pvt->parseDepth > 1) {
+            // ignore
+
+        } else if(pvt->jkey=="field") {
+            pvt->fieldName = sval;
+
+        } else if(pvt->jkey=="proc") {
+            if(sval.empty()) {
+                pvt->pp = pvaLinkConfig::Default;
+            } else if(sval=="CP") {
+                pvt->pp = pvaLinkConfig::CP;
+            } else if(sval=="CPP") {
+                pvt->pp = pvaLinkConfig::CPP;
+            } else if(sval=="PP") {
+                pvt->pp = pvaLinkConfig::PP;
+            } else if(sval=="NPP") {
+                pvt->pp = pvaLinkConfig::NPP;
+            } else if(pvt->debug) {
+                printf("pva link parsing unknown proc depth=%u key=\"%s\" value=\"%s\"\n",
+                       pvt->parseDepth, pvt->jkey.c_str(), sval.c_str());
+            }
+
+        } else if(pvt->jkey=="sevr") {
+            if(sval=="NMS") {
+                pvt->ms = pvaLinkConfig::NMS;
+            } else if(sval=="MS") {
+                pvt->ms = pvaLinkConfig::MS;
+            } else if(sval=="MSI") {
+                pvt->ms = pvaLinkConfig::MSI;
+            } else if(sval=="MSS") {
+                // not sure how to handle mapping severity for MSS.
+                // leave room for this to happen compatibly later by
+                // handling as alias for MS until then.
+                pvt->ms = pvaLinkConfig::MS;
+            } else if(pvt->debug) {
+                printf("pva link parsing unknown sevr depth=%u key=\"%s\" value=\"%s\"\n",
+                       pvt->parseDepth, pvt->jkey.c_str(), sval.c_str());
+            }
+
+        } else if(pvt->debug) {
+            printf("pva link parsing unknown string depth=%u key=\"%s\" value=\"%s\"\n",
+                   pvt->parseDepth, pvt->jkey.c_str(), sval.c_str());
+        }
+
+        pvt->jkey.clear();
+        return jlif_continue;
+    }CATCH(jlif_stop)
+}
+
+jlif_key_result pva_parse_start_map(jlink *pjlink)
+{
+    TRY {
+        TRACE();
+        return jlif_key_continue;
+    }CATCH(jlif_key_stop)
+}
+
+jlif_result pva_parse_key_map(jlink *pjlink, const char *key, size_t len)
+{
+    TRY {
+        std::string sval(key, len);
+        TRACE(<<sval);
+        pvt->jkey = sval;
+
+        return jlif_continue;
+    }CATCH(jlif_stop)
+}
+
+jlif_result pva_parse_end_map(jlink *pjlink)
+{
+    TRY {
+        TRACE();
+        return jlif_continue;
+    }CATCH(jlif_stop)
+}
+
+struct lset* pva_get_lset(const jlink *pjlink)
+{
+    TRACE();
+    return &pva_lset;
+}
+
+void pva_report(const jlink *rpjlink, int lvl, int indent)
+{
+    const pvaLink *pval = static_cast<const pvaLink*>(rpjlink);
+    try {
+        (void)pval;
+        printf("%*s'pva': %s", indent, "", pval->channelName.c_str());
+        if(!pval->fieldName.empty())
+            printf("|.%s", pval->fieldName.c_str());
+
+        switch(pval->pp) {
+        case pvaLinkConfig::NPP: printf(" NPP"); break;
+        case pvaLinkConfig::Default: printf(" Def"); break;
+        case pvaLinkConfig::PP: printf(" PP"); break;
+        case pvaLinkConfig::CP: printf(" CP"); break;
+        case pvaLinkConfig::CPP: printf(" CPP"); break;
+        }
+        switch(pval->ms) {
+        case pvaLinkConfig::NMS: printf(" NMS"); break;
+        case pvaLinkConfig::MS:  printf(" MS"); break;
+        case pvaLinkConfig::MSI: printf(" MSI"); break;
+        }
+        if(lvl>0) {
+            printf(" Q=%u pipe=%c defer=%c time=%c retry=%c morder=%d",
+                   unsigned(pval->queueSize),
+                   pval->pipeline ? 'T' : 'F',
+                   pval->defer ? 'T' : 'F',
+                   pval->time ? 'T' : 'F',
+                   pval->retry ? 'T' : 'F',
+                   pval->monorder);
+        }
+
+        if(pval->lchan) {
+            // after open()
+            Guard G(pval->lchan->lock);
+
+            printf(" conn=%c", pval->lchan->connected ? 'T' : 'F');
+            if(pval->lchan->op_put.valid()) {
+                printf(" Put");
+            }
+
+            if(lvl>0) {
+                printf(" #disconn=%zu prov=%s", pval->lchan->num_disconnect, pval->lchan->providerName.c_str());
+            }
+            if(lvl>1) {
+                printf(" inprog=%c",
+                       pval->lchan->queued?'T':'F');
+            }
+            if(lvl>5) {
+                std::ostringstream strm;
+                pval->lchan->chan.show(strm);
+                printf("\n%*s   CH: %s", indent, "", strm.str().c_str());
+            }
+        } else {
+            printf(" No Channel");
+        }
+        printf("\n");
+    }CATCH()
+}
+
+} //namespace
+
+namespace pvalink {
+
+jlif lsetPVA = {
+    "pva",
+    &pva_alloc_jlink,
+    &pva_free_jlink,
+    &pva_parse_null,
+    &pva_parse_bool,
+    &pva_parse_integer,
+    NULL,
+    &pva_parse_string,
+    &pva_parse_start_map,
+    &pva_parse_key_map,
+    &pva_parse_end_map,
+    NULL,
+    NULL,
+    NULL,
+    &pva_get_lset,
+    &pva_report,
+    NULL
+};
+
+} //namespace pvalink
@@ -0,0 +1,155 @@
+#include <pv/reftrack.h>
+#include <alarm.h>
+
+#include "pvalink.h"
+
+namespace pvalink {
+
+pvaLink::pvaLink()
+    :alive(true)
+    ,plink(0)
+    ,used_scratch(false)
+    ,used_queue(false)
+{
+    REFTRACE_INCREMENT(num_instances);
+
+    snap_severity = INVALID_ALARM;
+    snap_time.secPastEpoch = 0;
+    snap_time.nsec = 0;
+
+    //TODO: valgrind tells me these aren't initialized by Base, but probably should be.
+    parseDepth = 0;
+    parent = 0;
+}
+
+pvaLink::~pvaLink()
+{
+    alive = false;
+
+    if(lchan) { // may be NULL if parsing fails
+        Guard G(lchan->lock);
+
+        lchan->links.erase(this);
+        lchan->links_changed = true;
+
+        bool new_debug = false;
+        for(pvaLinkChannel::links_t::const_iterator it(lchan->links.begin()), end(lchan->links.end())
+            ; it!=end; ++it)
+        {
+            const pvaLink *pval = *it;
+            if(pval->debug) {
+                new_debug = true;
+                break;
+            }
+        }
+
+        lchan->debug = new_debug;
+    }
+
+    REFTRACE_DECREMENT(num_instances);
+}
+
+static
+pvd::StructureConstPtr monitorRequestType = pvd::getFieldCreate()->createFieldBuilder()
+        ->addNestedStructure("field")
+        ->endNested()
+        ->addNestedStructure("record")
+            ->addNestedStructure("_options")
+                ->add("pipeline", pvd::pvBoolean)
+                ->add("atomic", pvd::pvBoolean)
+                ->add("queueSize", pvd::pvUInt)
+            ->endNested()
+        ->endNested()
+        ->createStructure();
+
+pvd::PVStructurePtr pvaLink::makeRequest()
+{
+    pvd::PVStructurePtr ret(pvd::getPVDataCreate()->createPVStructure(monitorRequestType));
+    ret->getSubFieldT<pvd::PVBoolean>("record._options.pipeline")->put(pipeline);
+    ret->getSubFieldT<pvd::PVBoolean>("record._options.atomic")->put(true);
+    ret->getSubFieldT<pvd::PVUInt>("record._options.queueSize")->put(queueSize);
+    return ret;
+}
+
+// caller must lock lchan->lock
+bool pvaLink::valid() const
+{
+    return lchan->connected_latched && lchan->op_mon.root;
+}
+
+// caller must lock lchan->lock
+pvd::PVField::const_shared_pointer pvaLink::getSubField(const char *name)
+{
+    pvd::PVField::const_shared_pointer ret;
+    if(valid()) {
+        if(fieldName.empty()) {
+            // we access the top level struct
+            ret = lchan->op_mon.root->getSubField(name);
+
+        } else {
+            // we access a sub-struct
+            ret = lchan->op_mon.root->getSubField(fieldName);
+            if(!ret) {
+                // noop
+            } else if(ret->getField()->getType()!=pvd::structure) {
+                // addressed sub-field isn't a sub-structure
+                if(strcmp(name, "value")!=0) {
+                    // unless we are trying to fetch the "value", we fail here
+                    ret.reset();
+                }
+            } else {
+                ret = static_cast<const pvd::PVStructure*>(ret.get())->getSubField(name);
+            }
+        }
+    }
+    return ret;
+}
+
+// call with channel lock held
+void pvaLink::onDisconnect()
+{
+    DEBUG(this,<<plink->precord->name<<" disconnect");
+    // TODO: option to remain queue'd while disconnected
+
+    used_queue = used_scratch = false;
+}
+
+void pvaLink::onTypeChange()
+{
+    DEBUG(this,<<plink->precord->name<<" type change");
+
+    assert(lchan->connected_latched && !!lchan->op_mon.root); // we should only be called when connected
+
+    fld_value = getSubField("value");
+    fld_seconds = std::tr1::dynamic_pointer_cast<const pvd::PVScalar>(getSubField("timeStamp.secondsPastEpoch"));
+    fld_nanoseconds = std::tr1::dynamic_pointer_cast<const pvd::PVScalar>(getSubField("timeStamp.nanoseconds"));
+    fld_severity = std::tr1::dynamic_pointer_cast<const pvd::PVScalar>(getSubField("alarm.severity"));
+    fld_display = std::tr1::dynamic_pointer_cast<const pvd::PVStructure>(getSubField("display"));
+    fld_control = std::tr1::dynamic_pointer_cast<const pvd::PVStructure>(getSubField("control"));
+    fld_valueAlarm = std::tr1::dynamic_pointer_cast<const pvd::PVStructure>(getSubField("valueAlarm"));
+
+    proc_changed.clear();
+
+    // build mask of all "changed" bits associated with our .value
+    // CP/CPP input links will process this link only for updates where
+    // the changed mask and proc_changed share at least one set bit.
+    if(fld_value) {
+        // bit for this field
+        proc_changed.set(fld_value->getFieldOffset());
+
+        // bits of all parent fields
+        for(const pvd::PVStructure* parent = fld_value->getParent(); parent; parent = parent->getParent()) {
+            proc_changed.set(parent->getFieldOffset());
+        }
+
+        if(fld_value->getField()->getType()==pvd::structure)
+        {
+            // bits of all child fields
+            const pvd::PVStructure *val = static_cast<const pvd::PVStructure*>(fld_value.get());
+            for(size_t i=val->getFieldOffset(), N=val->getNextFieldOffset(); i<N; i++)
+                proc_changed.set(i);
+        }
+    }
+}
+
+} // namespace pvalink
@@ -0,0 +1,493 @@
+
+#include <epicsString.h>
+#include <alarm.h>
+#include <recGbl.h>
+#include <epicsStdio.h> // redirect stdout/stderr
+
+#include <pv/current_function.h>
+
+#include "pvalink.h"
+
+
+namespace {
+
+using namespace pvalink;
+
+#define TRY pvaLink *self = static_cast<pvaLink*>(plink->value.json.jlink); assert(self->alive); try
+#define CATCH() catch(std::exception& e) { \
+    errlogPrintf("pvaLink %s fails %s: %s\n", CURRENT_FUNCTION, plink->precord->name, e.what()); \
+}
+
+#define CHECK_VALID() if(!self->valid()) { DEBUG(self, <<CURRENT_FUNCTION<<" "<<self->channelName<<" !valid"); return -1;}
+
+void pvaOpenLink(DBLINK *plink)
+{
+    try {
+        pvaLink* self((pvaLink*)plink->value.json.jlink);
+
+        // workaround for Base not propagating info(base:lsetDebug to us
+        {
+            pdbRecordIterator rec(plink->precord);
+
+            if(epicsStrCaseCmp(rec.info("base:lsetDebug", "NO"), "YES")==0) {
+                self->debug = 1;
+            }
+        }
+
+        DEBUG(self, <<plink->precord->name<<" OPEN "<<self->channelName);
+
+        // still single threaded at this point.
+        // also, no pvaLinkChannel::lock yet
+
+        self->plink = plink;
+
+        if(self->channelName.empty())
+            return; // nothing to do...
+
+        pvd::PVStructure::const_shared_pointer pvRequest(self->makeRequest());
+        pvaGlobal_t::channels_key_t key;
+
+        {
+            std::ostringstream strm;
+            strm<<*pvRequest; // print the request as a convient key for our channel cache
+
+            key = std::make_pair(self->channelName, strm.str());
+        }
+
+        std::tr1::shared_ptr<pvaLinkChannel> chan;
+        bool doOpen = false;
+        {
+            Guard G(pvaGlobal->lock);
+
+            pvaGlobal_t::channels_t::iterator it(pvaGlobal->channels.find(key));
+
+            if(it!=pvaGlobal->channels.end()) {
+                // re-use existing channel
+                chan = it->second.lock();
+            }
+
+            if(!chan) {
+                // open new channel
+
+                chan.reset(new pvaLinkChannel(key, pvRequest));
+                pvaGlobal->channels.insert(std::make_pair(key, chan));
+                doOpen = true;
+            }
+
+            doOpen &= pvaGlobal->running; // if not running, then open from initHook
+        }
+
+        if(doOpen) {
+            chan->open(); // start subscription
+        }
+
+        if(!self->local || chan->providerName=="QSRV"){
+            Guard G(chan->lock);
+
+            chan->links.insert(self);
+            chan->links_changed = true;
+
+            self->lchan.swap(chan); // we are now attached
+
+            self->lchan->debug |= !!self->debug;
+        } else {
+            // TODO: only print duing iocInit()?
+            fprintf(stderr, "%s Error: local:true link to '%s' can't be fulfilled\n",
+                   plink->precord->name, self->channelName.c_str());
+            plink->lset = NULL;
+        }
+
+        return;
+    }CATCH()
+    // on error, prevent any further calls to our lset functions
+    plink->lset = NULL;
+}
+
+void pvaRemoveLink(struct dbLocker *locker, DBLINK *plink)
+{
+    try {
+        p2p::auto_ptr<pvaLink> self((pvaLink*)plink->value.json.jlink);
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName);
+        assert(self->alive);
+
+    }CATCH()
+}
+
+int pvaIsConnected(const DBLINK *plink)
+{
+    TRY {
+        Guard G(self->lchan->lock);
+
+        bool ret = self->valid();
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<ret);
+        return ret;
+
+    }CATCH()
+    return 0;
+}
+
+int pvaGetDBFtype(const DBLINK *plink)
+{
+    TRY {
+        Guard G(self->lchan->lock);
+        CHECK_VALID();
+
+        // if fieldName is empty, use top struct value
+        // if fieldName not empty
+        //    if sub-field is struct, use sub-struct .value
+        //    if sub-field not struct, treat as value
+
+        pvd::PVField::const_shared_pointer value(self->getSubField("value"));
+
+        pvd::ScalarType ftype = pvd::pvInt; // default for un-mapable types.
+        if(!value) {
+            // no-op
+        } else if(value->getField()->getType()==pvd::scalar)
+            ftype = static_cast<const pvd::Scalar*>(value->getField().get())->getScalarType();
+        else if(value->getField()->getType()==pvd::scalarArray)
+            ftype = static_cast<const pvd::ScalarArray*>(value->getField().get())->getElementType();
+
+        int ret;
+        switch(ftype) {
+#define CASE(BASETYPE, PVATYPE, DBFTYPE, PVACODE) case pvd::pv##PVACODE: ret = DBF_##DBFTYPE;
+#define CASE_REAL_INT64
+#include "pv/typemap.h"
+#undef CASE_REAL_INT64
+#undef CASE
+        case pvd::pvString: ret = DBF_STRING; // TODO: long string?
+        }
+
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<dbGetFieldTypeString(ret));
+        return ret;
+
+    }CATCH()
+    return -1;
+}
+
+long pvaGetElements(const DBLINK *plink, long *nelements)
+{
+    TRY {
+        Guard G(self->lchan->lock);
+        CHECK_VALID();
+
+        long ret = 0;
+        if(self->fld_value && self->fld_value->getField()->getType()==pvd::scalarArray)
+            ret = static_cast<const pvd::PVScalarArray*>(self->fld_value.get())->getLength();
+
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<ret);
+
+        return ret;
+    }CATCH()
+    return -1;
+}
+
+long pvaGetValue(DBLINK *plink, short dbrType, void *pbuffer,
+        long *pnRequest)
+{
+    TRY {
+        Guard G(self->lchan->lock);
+
+        if(!self->valid()) {
+            // disconnected
+            if(self->ms != pvaLink::NMS) {
+                recGblSetSevr(plink->precord, LINK_ALARM, self->snap_severity);
+            }
+            // TODO: better capture of disconnect time
+            epicsTimeGetCurrent(&self->snap_time);
+            if(self->time) {
+                plink->precord->time = self->snap_time;
+            }
+            DEBUG(self, <<CURRENT_FUNCTION<<" "<<self->channelName<<" !valid");
+            return -1;
+        }
+
+        if(self->fld_value) {
+            long status = copyPVD2DBF(self->fld_value, pbuffer, dbrType, pnRequest);
+            if(status) {
+                DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<status);
+                return status;
+            }
+        }
+
+        if(self->fld_seconds) {
+            self->snap_time.secPastEpoch = self->fld_seconds->getAs<pvd::uint32>() - POSIX_TIME_AT_EPICS_EPOCH;
+            if(self->fld_nanoseconds) {
+                self->snap_time.nsec = self->fld_nanoseconds->getAs<pvd::uint32>();
+            } else {
+                self->snap_time.nsec = 0u;
+            }
+        } else {
+            self->snap_time.secPastEpoch = 0u;
+            self->snap_time.nsec = 0u;
+        }
+
+        if(self->fld_severity) {
+            self->snap_severity = self->fld_severity->getAs<pvd::uint16>();
+        } else {
+            self->snap_severity = NO_ALARM;
+        }
+
+        if((self->snap_severity!=NO_ALARM && self->ms == pvaLink::MS) ||
+           (self->snap_severity==INVALID_ALARM && self->ms == pvaLink::MSI))
+        {
+            recGblSetSevr(plink->precord, LINK_ALARM, self->snap_severity);
+        }
+
+        if(self->time) {
+            plink->precord->time = self->snap_time;
+        }
+
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" OK");
+        return 0;
+    }CATCH()
+    return -1;
+}
+
+long pvaGetControlLimits(const DBLINK *plink, double *lo, double *hi)
+{
+    TRY {
+        Guard G(self->lchan->lock);
+        CHECK_VALID();
+
+        if(self->fld_control) {
+            pvd::PVScalar::const_shared_pointer value;
+            if(lo) {
+                value = std::tr1::static_pointer_cast<const pvd::PVScalar>(self->fld_control->getSubField("limitLow"));
+                *lo = value ? value->getAs<double>() : 0.0;
+            }
+            if(hi) {
+                value = std::tr1::static_pointer_cast<const pvd::PVScalar>(self->fld_control->getSubField("limitHigh"));
+                *hi = value ? value->getAs<double>() : 0.0;
+            }
+        } else {
+            *lo = *hi = 0.0;
+        }
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<(lo ? *lo : 0)<<" "<<(hi ? *hi : 0));
+        return 0;
+    }CATCH()
+    return -1;
+}
+
+long pvaGetGraphicLimits(const DBLINK *plink, double *lo, double *hi)
+{
+    TRY {
+        Guard G(self->lchan->lock);
+        CHECK_VALID();
+
+        if(self->fld_display) {
+            pvd::PVScalar::const_shared_pointer value;
+            if(lo) {
+                value = std::tr1::static_pointer_cast<const pvd::PVScalar>(self->fld_display->getSubField("limitLow"));
+                *lo = value ? value->getAs<double>() : 0.0;
+            }
+            if(hi) {
+                value = std::tr1::static_pointer_cast<const pvd::PVScalar>(self->fld_display->getSubField("limitHigh"));
+                *hi = value ? value->getAs<double>() : 0.0;
+            }
+        } else {
+            *lo = *hi = 0.0;
+        }
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<(lo ? *lo : 0)<<" "<<(hi ? *hi : 0));
+        return 0;
+    }CATCH()
+    return -1;
+}
+
+long pvaGetAlarmLimits(const DBLINK *plink, double *lolo, double *lo,
+        double *hi, double *hihi)
+{
+    TRY {
+        //Guard G(self->lchan->lock);
+        //CHECK_VALID();
+        *lolo = *lo = *hi = *hihi = 0.0;
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<(lolo ? *lolo : 0)<<" "<<(lo ? *lo : 0)<<" "<<(hi ? *hi : 0)<<" "<<(hihi ? *hihi : 0));
+        return 0;
+    }CATCH()
+    return -1;
+}
+
+long pvaGetPrecision(const DBLINK *plink, short *precision)
+{
+    TRY {
+        //Guard G(self->lchan->lock);
+        //CHECK_VALID();
+
+        // No sane way to recover precision from display.format string.
+        *precision = 0;
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<precision);
+        return 0;
+    }CATCH()
+    return -1;
+}
+
+long pvaGetUnits(const DBLINK *plink, char *units, int unitsSize)
+{
+    TRY {
+        Guard G(self->lchan->lock);
+        CHECK_VALID();
+
+        if(unitsSize==0) return 0;
+
+        if(units && self->fld_display) {
+            pvd::PVString::const_shared_pointer value(std::tr1::static_pointer_cast<const pvd::PVString>(self->fld_display->getSubField("units")));
+            if(value) {
+                const std::string& egu = value->get();
+                strncpy(units, egu.c_str(), unitsSize);
+            }
+        } else if(units) {
+            units[0] = '\0';
+        }
+        units[unitsSize-1] = '\0';
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<units);
+        return 0;
+    }CATCH()
+    return -1;
+}
+
+long pvaGetAlarm(const DBLINK *plink, epicsEnum16 *status,
+        epicsEnum16 *severity)
+{
+    TRY {
+        Guard G(self->lchan->lock);
+        CHECK_VALID();
+
+        if(severity) {
+            *severity = self->snap_severity;
+        }
+        if(status) {
+            *status = self->snap_severity ? LINK_ALARM : NO_ALARM;
+        }
+
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<(severity ? *severity : 0)<<" "<<(status ? *status : 0));
+        return 0;
+    }CATCH()
+    return -1;
+}
+
+long pvaGetTimeStamp(const DBLINK *plink, epicsTimeStamp *pstamp)
+{
+    TRY {
+        Guard G(self->lchan->lock);
+        CHECK_VALID();
+
+        if(pstamp) {
+            *pstamp = self->snap_time;
+        }
+
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<(pstamp ? pstamp->secPastEpoch : 0)<<":"<<(pstamp ? pstamp->nsec: 0));
+        return 0;
+    }CATCH()
+    return -1;
+}
+
+// note that we handle DBF_ENUM differently than in pvif.cpp
+pvd::ScalarType DBR2PVD(short dbr)
+{
+    switch(dbr) {
+#define CASE(BASETYPE, PVATYPE, DBFTYPE, PVACODE) case DBR_##DBFTYPE: return pvd::pv##PVACODE;
+#define CASE_SKIP_BOOL
+#define CASE_REAL_INT64
+#include "pv/typemap.h"
+#undef CASE_SKIP_BOOL
+#undef CASE_REAL_INT64
+#undef CASE
+    case DBF_ENUM: return pvd::pvUShort;
+    case DBF_STRING: return pvd::pvString;
+    }
+    throw std::invalid_argument("Unsupported DBR code");
+}
+
+long pvaPutValue(DBLINK *plink, short dbrType,
+        const void *pbuffer, long nRequest)
+{
+    TRY {
+        (void)self;
+        Guard G(self->lchan->lock);
+
+        if(nRequest < 0) return -1;
+
+        if(!self->retry && !self->valid()) {
+            DEBUG(self, <<CURRENT_FUNCTION<<" "<<self->channelName<<" !valid");
+            return -1;
+        }
+
+        pvd::ScalarType stype = DBR2PVD(dbrType);
+
+        pvd::shared_vector<const void> buf;
+
+        if(dbrType == DBF_STRING) {
+            const char *sbuffer = (const char*)pbuffer;
+            pvd::shared_vector<std::string> sval(nRequest);
+
+            for(long n=0; n<nRequest; n++, sbuffer += MAX_STRING_SIZE) {
+                sval[n] = std::string(sbuffer, epicsStrnLen(sbuffer, MAX_STRING_SIZE));
+            }
+
+            self->put_scratch = pvd::static_shared_vector_cast<const void>(pvd::freeze(sval));
+
+        } else {
+            pvd::shared_vector<void> val(pvd::ScalarTypeFunc::allocArray(stype, size_t(nRequest)));
+
+            assert(size_t(dbValueSize(dbrType)*nRequest) == val.size());
+
+            memcpy(val.data(), pbuffer, val.size());
+
+            self->put_scratch = pvd::freeze(val);
+        }
+
+        self->used_scratch = true;
+
+        if(!self->defer) self->lchan->put();
+
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<self->lchan->op_put.valid());
+        return 0;
+    }CATCH()
+    return -1;
+}
+
+void pvaScanForward(DBLINK *plink)
+{
+    TRY {
+        Guard G(self->lchan->lock);
+
+        if(!self->retry && !self->valid()) {
+            return;
+        }
+
+        // FWD_LINK is never deferred, and always results in a Put
+        self->lchan->put(true);
+
+        DEBUG(self, <<plink->precord->name<<" "<<CURRENT_FUNCTION<<" "<<self->channelName<<" "<<self->lchan->op_put.valid());
+    }CATCH()
+}
+
+#undef TRY
+#undef CATCH
+
+} //namespace
+
+namespace pvalink {
+
+lset pva_lset = {
+    0, 1, // non-const, volatile
+    &pvaOpenLink,
+    &pvaRemoveLink,
+    NULL, NULL, NULL,
+    &pvaIsConnected,
+    &pvaGetDBFtype,
+    &pvaGetElements,
+    &pvaGetValue,
+    &pvaGetControlLimits,
+    &pvaGetGraphicLimits,
+    &pvaGetAlarmLimits,
+    &pvaGetPrecision,
+    &pvaGetUnits,
+    &pvaGetAlarm,
+    &pvaGetTimeStamp,
+    &pvaPutValue,
+    NULL,
+    &pvaScanForward
+    //&pvaReportLink,
+};
+
+} //namespace pvalink
@@ -0,0 +1,16 @@
+
+#include <epicsExport.h>
+
+static void installPVAAddLinkHook() {}
+
+struct jlif {} lsetPVA;
+
+extern "C" {
+int pvaLinkDebug;
+int pvaLinkNWorkers;
+
+    epicsExportRegistrar(installPVAAddLinkHook);
+    epicsExportAddress(jlif, lsetPVA);
+    epicsExportAddress(int, pvaLinkDebug);
+    epicsExportAddress(int, pvaLinkNWorkers);
+}
@@ -11,14 +11,17 @@
 #include <alarm.h>
 #include <errSymTbl.h>
 #include <epicsVersion.h>
+#include <errlog.h>
+#include <osiSock.h>

 #include <pv/status.h>
 #include <pv/bitSet.h>
 #include <pv/pvData.h>
 #include <pv/anyscalar.h>
 #include <pv/reftrack.h>
+#include <pv/pvAccess.h>
+#include <pv/security.h>

-#define epicsExportSharedSymbols
 #include "sb.h"
 #include "pvif.h"

@@ -27,14 +30,13 @@
 #ifdef EPICS_VERSION_INT
 #  if EPICS_VERSION_INT>=VERSION_INT(3,16,1,0)
 #    define USE_INT64
+     // effects all uses of pv/typemap.h
+#    define CASE_REAL_INT64
 #  endif
 #endif

-extern "C" {
-int qsrvDisableFormat = 1;
-}
-
 namespace pvd = epics::pvData;
+namespace pva = epics::pvAccess;

 DBCH::DBCH(dbChannel *ch) :chan(ch)
 {
@@ -67,6 +69,97 @@ void DBCH::swap(DBCH& o)
    std::swap(chan, o.chan);
 }

+void ASCred::update(const pva::ChannelRequester::shared_pointer& req)
+{
+    pva::PeerInfo::const_shared_pointer info(req->getPeerInfo());
+    std::string usertemp, hosttemp;
+
+    if(info && info->identified) {
+        hosttemp = info->peer;
+        if(info->authority=="ca") {
+            usertemp = info->account;
+            size_t sep = usertemp.find_last_of('/');
+            if(sep != std::string::npos) {
+                // prevent CA auth from claiming to be eg. "krb/someone.special"
+                usertemp = usertemp.substr(sep+1);
+            }
+
+        } else {
+            usertemp = info->authority + "/" + info->account;
+        }
+
+        const char role[] = "role/";
+
+        groups.resize(info->roles.size());
+        size_t idx = 0u;
+        for(pva::PeerInfo::roles_t::const_iterator it(info->roles.begin()), end(info->roles.end()); it!=end; ++it, idx++) {
+            groups[idx].resize((*it).size()+sizeof(role)); // sizeof(role) includes trailing nil
+            std::copy(role,
+                      role+sizeof(role)-1,
+                      groups[idx].begin());
+            std::copy(it->begin(),
+                      it->end(),
+                      groups[idx].begin()+sizeof(role)-1);
+            groups[idx][groups[idx].size()-1] = '\0';
+        }
+
+    } else {
+        // legacy and anonymous
+        hosttemp = req->getRequesterName();
+    }
+
+    // remote names have the form "IP:port"
+    size_t sep = hosttemp.find_first_of(':');
+    if(sep == std::string::npos) {
+        sep = hosttemp.size();
+    }
+    hosttemp.resize(sep);
+
+    host.resize(hosttemp.size()+1);
+    std::copy(hosttemp.begin(),
+              hosttemp.end(),
+              host.begin());
+    host[hosttemp.size()] = '\0';
+
+    user.resize(usertemp.size()+1);
+    std::copy(usertemp.begin(),
+              usertemp.end(),
+              user.begin());
+    user[usertemp.size()] = '\0';
+}
+
+ASCLIENT::~ASCLIENT()
+{
+    asRemoveClient(&aspvt);
+    for(size_t i=0, N=grppvt.size(); i<N; i++) {
+        asRemoveClient(&grppvt[i]);
+    }
+}
+
+void ASCLIENT::add(dbChannel* chan, ASCred& cred)
+{
+    asRemoveClient(&aspvt);
+    /* asAddClient() fails secure to no-permission */
+    (void)asAddClient(&aspvt, dbChannelRecord(chan)->asp, dbChannelFldDes(chan)->as_level, &cred.user[0], &cred.host[0]);
+
+    grppvt.resize(cred.groups.size(), 0);
+
+    for(size_t i=0, N=grppvt.size(); i<N; i++) {
+        asRemoveClient(&grppvt[i]);
+        (void)asAddClient(&grppvt[i], dbChannelRecord(chan)->asp, dbChannelFldDes(chan)->as_level, &cred.groups[i][0], &cred.host[0]);
+    }
+}
+
+bool ASCLIENT::canWrite() {
+    if(!asActive || (aspvt && asCheckPut(aspvt)))
+        return true;
+    for(size_t i=0, N=grppvt.size(); i<N; i++) {
+        if(grppvt[i] && asCheckPut(grppvt[i]))
+            return true;
+    }
+    return false;
+}
+
 PVIF::PVIF(dbChannel *ch)
    :chan(ch)
 {}
@@ -92,7 +185,8 @@ struct pvCommon : public pvTimeAlarm {
    pvd::BitSet maskVALUE, maskPROPERTY, maskVALUEPut;

    pvd::PVDoublePtr displayLow, displayHigh, controlLow, controlHigh;
-    pvd::PVStringPtr egu, desc, prec;
+    pvd::PVStringPtr egu, desc;
+    pvd::PVIntPtr fmt, prec;

    pvd::PVScalarPtr warnLow, warnHigh, alarmLow, alarmHigh;

@@ -173,9 +267,32 @@ void attachTime(pvTimeAlarm& pvm, const pvd::PVStructurePtr& pv)
 #undef FMAP
 }

+static
+pvd::shared_vector<const std::string> buildFormats()
+{
+    pvd::shared_vector<std::string> fmt;
+    fmt.push_back("Default");
+    fmt.push_back("String");
+    fmt.push_back("Binary");
+    fmt.push_back("Decimal");
+    fmt.push_back("Hex");
+    fmt.push_back("Exponential");
+    fmt.push_back("Engineering");
+    return pvd::freeze(fmt);
+}
+
+static const
+pvd::shared_vector<const std::string> displayForms(buildFormats());
+
 // lookup fields and populate pvCommon.  Non-existant fields will be NULL.
 void attachMeta(pvCommon& pvm, const pvd::PVStructurePtr& pv)
 {
+    {
+        pvd::PVStructurePtr fmt(pv->getSubField<pvd::PVStructure>("display.form"));
+        if(fmt) {
+            fmt->getSubFieldT<pvd::PVStringArray>("choices")->replace(displayForms);
+        }
+    }
    attachTime(pvm, pv);
 #define FMAP(MNAME, PVT, FNAME, DBE) pvm.MNAME = pv->getSubField<pvd::PVT>(FNAME); \
        if(pvm.MNAME) pvm.mask ## DBE.set(pvm.MNAME->getFieldOffset())
@@ -185,7 +302,8 @@ void attachMeta(pvCommon& pvm, const pvd::PVStructurePtr& pv)
    FMAP(controlLow, PVDouble, "control.limitLow", PROPERTY);
    FMAP(egu, PVString, "display.units", PROPERTY);
    FMAP(desc, PVString, "display.description", PROPERTY);
-    FMAP(prec,  PVString, "display.format", PROPERTY);
+    FMAP(prec, PVInt, "display.precision", PROPERTY);
+    FMAP(fmt,  PVInt, "display.form.index", PROPERTY);
    FMAP(warnHigh, PVScalar, "valueAlarm.highWarningLimit", PROPERTY);
    FMAP(warnLow,  PVScalar, "valueAlarm.lowWarningLimit", PROPERTY);
    FMAP(alarmHigh, PVScalar, "valueAlarm.highAlarmLimit", PROPERTY);
@@ -441,61 +559,12 @@ void putMeta(const pvCommon& pv, unsigned dbe, db_field_log *pfl)
        FMAP(DBR_CTRL_DOUBLE, controlLow, lower_ctrl_limit);
        FMAP(DBR_GR_DOUBLE, egu, units);
 #undef FMAP
-        if(META::mask&DBR_PRECISION && pv.prec && !qsrvDisableFormat) {
-            // construct printf() style format.
-            // Widths based on epicsTypes.h
-            char buf[8];
-            char *pos = &buf[8]; // build string in reverse order
-            bool ok = true;
-
-            *--pos = '\0'; // buf[7] = '\0'
-
-            switch(dbChannelFinalFieldType(pv.chan)) {
-#ifdef USE_INT64
-            case DBF_UINT64:
-                *--pos = 'l';
-                *--pos = 'l';
-#endif
-            case DBF_UCHAR:
-            case DBF_USHORT:
-            case DBF_ULONG:
-                *--pos = 'u';
-                break;
-#ifdef USE_INT64
-            case DBF_INT64:
-                *--pos = 'l';
-                *--pos = 'l';
-#endif
-            case DBF_CHAR:
-            case DBF_SHORT:
-            case DBF_LONG:
-                *--pos = 'd';
-                break;
-            case DBF_DOUBLE:
-            case DBF_FLOAT:
-                *--pos = 'g'; // either decimal or scientific
-                break;
-            case DBF_STRING:
-                *--pos = 's';
-                break;
-            default:
-                ok = false;
-            }
-
-            if(ok) {
-                long dp = meta.precision.dp;
-                if(dp<0) dp = 0;
-                else if(dp>=99) dp = 99;
-                for(;dp;dp = dp/10u) {
-                    *--pos = '0'+(dp%10u);
-                }
-                *--pos = '%';
-            }
-            pv.prec->put(pos);
+        if(META::mask&DBR_PRECISION && pv.prec) {
+            pv.prec->put(pvd::int32(meta.precision.dp));
        }
 #define FMAP(MASK, MNAME, FNAME) if(META::mask&(MASK) && pv.MNAME) pv.MNAME->putFrom(meta.FNAME)
        // not handling precision until I get a better idea of what 'format' is supposed to be...
-        //FMAP(prec,  PVScalar, "display.format", PROPERTY);
+        //FMAP(prec,  PVScalar, "display.form", PROPERTY);
        FMAP(DBR_AL_DOUBLE, warnHigh, upper_warning_limit);
        FMAP(DBR_AL_DOUBLE, warnLow,  lower_warning_limit);
        FMAP(DBR_AL_DOUBLE, alarmHigh, upper_alarm_limit);
@@ -526,16 +595,15 @@ void putAll(const PVC &pv, unsigned dbe, db_field_log *pfl)
    }
 }

-void findNSMask(pvTimeAlarm& pvmeta, dbChannel *chan, const epics::pvData::PVStructurePtr& pvalue)
+void findNSMask(pvTimeAlarm& pvmeta, pdbRecordIterator& info, const epics::pvData::PVStructurePtr& pvalue)
 {
-    pdbRecordIterator info(chan);
    const char *UT = info.info("Q:time:tag");
    if(UT && strncmp(UT, "nsec:lsb:", 9)==0) {
        try{
            pvmeta.nsecMask = epics::pvData::castUnsafe<pvd::uint32>(std::string(&UT[9]));
        }catch(std::exception& e){
            pvmeta.nsecMask = 0;
-            std::cerr<<dbChannelRecord(chan)->name<<" : Q:time:tag nsec:lsb: requires a number not '"<<UT[9]<<"'\n";
+            std::cerr<<info.name()<<" : Q:time:tag nsec:lsb: requires a number not '"<<UT[9]<<"'\n";
        }
    }
    if(pvmeta.nsecMask>0 && pvmeta.nsecMask<=32) {
@@ -551,6 +619,37 @@ void findNSMask(pvTimeAlarm& pvmeta, dbChannel *chan, const epics::pvData::PVStr
        pvmeta.nsecMask = 0;
 }

+void findFormat(pvTimeAlarm& pvmeta, pdbRecordIterator& info, const epics::pvData::PVStructurePtr& pvalue)
+{
+    const char *FMT = info.info("Q:form");
+    if(FMT) {
+        pvd::PVScalarPtr fmt(pvalue->getSubField<pvd::PVScalar>("display.form.index"));
+        if(fmt) {
+            bool found = false;
+            for(size_t i=0; !found && i<displayForms.size(); i++) {
+                if((found=(displayForms[i]==FMT)))
+                    fmt->putFrom<pvd::uint32>(i);
+            }
+            if(!found) {
+                try {
+                    fmt->putFrom(std::string(FMT)); // attempt to parse as number
+                }catch(std::exception& e){
+                    errlogPrintf("%s: info(Q:form, \"%s\") is not known format: %s\n", info.name(), FMT, e.what());
+                }
+            }
+        }
+    }
+}
+
+pvd::Status checkDISP(dbChannel *chan)
+{
+    dbCommon *prec = dbChannelRecord(chan);
+    pvd::Status ret;
+    if(prec->disp && dbChannelField(chan)!=&prec->disp)
+        ret = pvd::Status::error("Put Disabled");
+    return ret;
+}
+
 template<typename PVX, typename META>
 struct PVIFScalarNumeric : public PVIF
 {
@@ -581,7 +680,9 @@ struct PVIFScalarNumeric : public PVIF
            pvmeta.maskVALUEPut.set(0);
            pvmeta.maskVALUEPut.set(bit);
        }
-        findNSMask(pvmeta, chan, pvalue);
+        pdbRecordIterator info(chan);
+        findNSMask(pvmeta, info, pvalue);
+        findFormat(pvmeta, info, pvalue);
    }
    virtual ~PVIFScalarNumeric() {}

@@ -603,12 +704,24 @@ struct PVIFScalarNumeric : public PVIF
        }
    }

-    virtual pvd::Status get(const epics::pvData::BitSet& mask, proc_t proc) OVERRIDE FINAL
+    virtual pvd::Status get(const epics::pvData::BitSet& mask, proc_t proc, bool permit) OVERRIDE FINAL
    {
-        pvd::Status ret;
-        if(mask.logical_and(pvmeta.maskVALUEPut)) {
-            getValue(pvmeta.chan, pvmeta.value.get());
-            ret = PVIF::get(mask, proc);
+        pvd::Status ret = checkDISP(chan);
+        if(!ret)
+            return ret;
+
+        bool newval = mask.logical_and(pvmeta.maskVALUEPut);
+        if(newval) {
+            if(permit)
+                getValue(pvmeta.chan, pvmeta.value.get());
+            else
+                ret = pvd::Status::error("Put not permitted");
+        }
+        if(newval || proc==PVIF::ProcForce) {
+            if(permit)
+                ret = PVIF::get(mask, proc);
+            else
+                ret = pvd::Status::error("Process not permitted");
        }
        return ret;
    }
@@ -628,6 +741,7 @@ struct PVIFScalarNumeric : public PVIF

 } // namespace

+static
 pvd::ScalarType DBR2PVD(short dbr)
 {
    switch(dbr) {
@@ -639,26 +753,29 @@ pvd::ScalarType DBR2PVD(short dbr)
 #undef CASE_SKIP_BOOL
 #undef CASE
    case DBF_STRING: return pvd::pvString;
-    default:
-        throw std::invalid_argument("Unsupported DBR code");
    }
+    throw std::invalid_argument("Unsupported DBR code");
 }

 short PVD2DBR(pvd::ScalarType pvt)
 {
    switch(pvt) {
 #define CASE(BASETYPE, PVATYPE, DBFTYPE, PVACODE) case pvd::pv##PVACODE: return DBR_##DBFTYPE;
-#define CASE_SQUEEZE_INT64
+#ifndef USE_INT64
+#  define CASE_SQUEEZE_INT64
+#endif
 #include "pv/typemap.h"
-#undef CASE_SQUEEZE_INT64
+#ifndef USE_INT64
+#  undef CASE_SQUEEZE_INT64
+#endif
 #undef CASE
-    default:
-        throw std::invalid_argument("Unsupported pvType code");
+    case pvd::pvString: return DBF_STRING;
    }
+    return -1;
 }

 epics::pvData::FieldConstPtr
-ScalarBuilder::dtype(dbChannel *channel)
+ScalarBuilder::dtype()
 {
    short dbr = dbChannelFinalFieldType(channel);
    const long maxelem = dbChannelFinalElements(channel);
@@ -670,23 +787,50 @@ ScalarBuilder::dtype(dbChannel *channel)
    if(maxelem!=1 && dbr==DBR_ENUM)
        dbr = DBF_SHORT;

+    pvd::FieldBuilderPtr builder(pvd::getFieldCreate()->createFieldBuilder());
+    pvd::StandardFieldPtr standard(pvd::getStandardField());
+
    if(dbr==DBR_ENUM)
-        return pvd::getStandardField()->enumerated("alarm,timeStamp");
-
-    std::string options;
-    if(dbr!=DBR_STRING)
-        options = "alarm,timeStamp,display,control,valueAlarm";
+        builder = builder->setId("epics:nt/NTEnum:1.0")
+                         ->addNestedStructure("value")
+                            ->setId("enum_t")
+                            ->add("index", pvd::pvInt)
+                            ->addArray("choices", pvd::pvString)
+                         ->endNested();
+    else if(maxelem==1)
+        builder = builder->setId("epics:nt/NTScalar:1.0")
+                         ->add("value", pvt);
    else
-        options = "alarm,timeStamp,display,control";
+        builder = builder->setId("epics:nt/NTScalarArray:1.0")
+                         ->addArray("value", pvt);

-    if(maxelem==1)
-        return pvd::getStandardField()->scalar(pvt, options);
-    else
-        return pvd::getStandardField()->scalarArray(pvt, options);
+    builder = builder->add("alarm", standard->alarm())
+                     ->add("timeStamp", standard->timeStamp());
+
+    if(dbr!=DBR_ENUM) {
+        builder = builder->addNestedStructure("display")
+                            ->add("limitLow", pvd::pvDouble)
+                            ->add("limitHigh", pvd::pvDouble)
+                            ->add("description", pvd::pvString)
+                            ->add("units", pvd::pvString)
+                            ->add("precision", pvd::pvInt)
+                            ->addNestedStructure("form")
+                                ->setId("enum_t")
+                                ->add("index", pvd::pvInt)
+                                ->addArray("choices", pvd::pvString)
+                            ->endNested()
+                         ->endNested()
+                         ->add("control", standard->control());
+
+        if(dbr!=DBR_STRING)
+            builder = builder->add("valueAlarm", standard->doubleAlarm());
+    }
+
+    return builder->createStructure();
 }

 PVIF*
-ScalarBuilder::attach(dbChannel *channel, const epics::pvData::PVStructurePtr& root, const FieldName& fldname)
+ScalarBuilder::attach(const epics::pvData::PVStructurePtr& root, const FieldName& fldname)
 {
    if(!channel)
        throw std::runtime_error("+type:\"scalar\" requires +channel:");
@@ -695,7 +839,6 @@ ScalarBuilder::attach(dbChannel *channel, const epics::pvData::PVStructurePtr& r

    const short dbr = dbChannelFinalFieldType(channel);
    const long maxelem = dbChannelFinalElements(channel);
-    //const pvd::ScalarType pvt = DBR2PVD(dbr);

    if(maxelem==1) {
        switch(dbr) {
@@ -705,6 +848,10 @@ ScalarBuilder::attach(dbChannel *channel, const epics::pvData::PVStructurePtr& r
        case DBR_USHORT:
        case DBR_LONG:
        case DBR_ULONG:
+#ifdef USE_INT64
+        case DBR_INT64:
+        case DBR_UINT64:
+#endif
            return new PVIFScalarNumeric<pvScalar, metaDOUBLE>(channel, fld, enclosing);
        case DBR_FLOAT:
        case DBR_DOUBLE:
@@ -725,6 +872,10 @@ ScalarBuilder::attach(dbChannel *channel, const epics::pvData::PVStructurePtr& r
        case DBR_ULONG:
        case DBR_STRING:
        case DBR_FLOAT:
+#ifdef USE_INT64
+        case DBR_INT64:
+        case DBR_UINT64:
+#endif
        case DBR_DOUBLE:
            return new PVIFScalarNumeric<pvArray, metaDOUBLE>(channel, fld, enclosing);
        }
@@ -756,7 +907,7 @@ struct PVIFPlain : public PVIF

    virtual ~PVIFPlain() {}

-    virtual void put(epics::pvData::BitSet& mask, unsigned dbe, db_field_log *pfl)
+    virtual void put(epics::pvData::BitSet& mask, unsigned dbe, db_field_log *pfl) OVERRIDE FINAL
    {
        if(dbe&DBE_VALUE) {
            putValue(channel, field.get(), pfl);
@@ -764,17 +915,29 @@ struct PVIFPlain : public PVIF
        }
    }

-    virtual pvd::Status get(const epics::pvData::BitSet& mask, proc_t proc)
+    virtual pvd::Status get(const epics::pvData::BitSet& mask, proc_t proc, bool permit) OVERRIDE FINAL
    {
-        pvd::Status ret;
-        if(mask.get(fieldOffset)) {
-            getValue(channel, field.get());
-            ret = PVIF::get(mask, proc);
+        pvd::Status ret = checkDISP(chan);
+        if(!ret)
+            return ret;
+
+        bool newval = mask.get(fieldOffset);
+        if(newval) {
+            if(permit)
+                getValue(channel, field.get());
+            else
+                ret = pvd::Status::error("Put not permitted");
+        }
+        if(newval || proc==PVIF::ProcForce) {
+            if(permit)
+                ret = PVIF::get(mask, proc);
+            else
+                ret = pvd::Status::error("Process not permitted");
        }
        return ret;
    }

-    virtual unsigned dbe(const epics::pvData::BitSet& mask)
+    virtual unsigned dbe(const epics::pvData::BitSet& mask) OVERRIDE FINAL
    {
        // TODO: figure out how to handle various intermidiate compressed
        //       bitSet and enclosing.
@@ -787,10 +950,11 @@ struct PVIFPlain : public PVIF

 struct PlainBuilder : public PVIFBuilder
 {
+    explicit PlainBuilder(dbChannel* chan) :PVIFBuilder(chan) {}
    virtual ~PlainBuilder() {}

    // fetch the structure description
-    virtual epics::pvData::FieldConstPtr dtype(dbChannel *channel) OVERRIDE FINAL {
+    virtual epics::pvData::FieldConstPtr dtype() OVERRIDE FINAL {
        const short dbr = dbChannelFinalFieldType(channel);
        const long maxelem = dbChannelFinalElements(channel);
        const pvd::ScalarType pvt = DBR2PVD(dbr);
@@ -807,8 +971,7 @@ struct PlainBuilder : public PVIFBuilder
    // Attach to a structure instance.
    // must be of the type returned by dtype().
    // need not be the root structure
-    virtual PVIF* attach(dbChannel *channel,
-                         const epics::pvData::PVStructurePtr& root,
+    virtual PVIF* attach(const epics::pvData::PVStructurePtr& root,
                         const FieldName& fldname) OVERRIDE FINAL
    {
        if(!channel)
@@ -827,10 +990,11 @@ struct PlainBuilder : public PVIFBuilder

 struct AnyScalarBuilder : public PVIFBuilder
 {
+    explicit AnyScalarBuilder(dbChannel* chan) :PVIFBuilder(chan) {}
    virtual ~AnyScalarBuilder() {}

    // fetch the structure description
-    virtual epics::pvData::FieldConstPtr dtype(dbChannel *channel) OVERRIDE FINAL {
+    virtual epics::pvData::FieldConstPtr dtype() OVERRIDE FINAL {
        (void)channel; //ignored
        return pvd::getFieldCreate()->createVariantUnion();
    }
@@ -838,8 +1002,7 @@ struct AnyScalarBuilder : public PVIFBuilder
    // Attach to a structure instance.
    // must be of the type returned by dtype().
    // need not be the root structure
-    virtual PVIF* attach(dbChannel *channel,
-                         const epics::pvData::PVStructurePtr& root,
+    virtual PVIF* attach(const epics::pvData::PVStructurePtr& root,
                         const FieldName& fldname) OVERRIDE FINAL
    {
        if(!channel)
@@ -884,8 +1047,10 @@ struct PVIFMeta : public PVIF
        if(!field)
            throw std::logic_error("PVIFMeta attached type mis-match");
        meta.chan = channel;
+        pdbRecordIterator info(chan);
        attachTime(meta, field);
-        findNSMask(meta, channel, field);
+        findNSMask(meta, info, field);
+        findFormat(meta, info, field);
        if(enclosing) {
            meta.maskALWAYS.clear();
            meta.maskALWAYS.set(enclosing->getFieldOffset());
@@ -896,7 +1061,7 @@ struct PVIFMeta : public PVIF

    virtual ~PVIFMeta() {}

-    virtual void put(epics::pvData::BitSet& mask, unsigned dbe, db_field_log *pfl)
+    virtual void put(epics::pvData::BitSet& mask, unsigned dbe, db_field_log *pfl) OVERRIDE FINAL
    {
        mask |= meta.maskALWAYS;
        if(dbe&DBE_ALARM)
@@ -905,13 +1070,15 @@ struct PVIFMeta : public PVIF
        putTime(meta, dbe, pfl);
    }

-    virtual pvd::Status get(const epics::pvData::BitSet& mask, proc_t proc)
+    virtual pvd::Status get(const epics::pvData::BitSet& mask, proc_t proc, bool permit) OVERRIDE FINAL
    {
        // can't put time/alarm
+        if(mask.logical_and(meta.maskALARM))
+            return pvd::Status::warn("Put to meta field ignored");
        return pvd::Status::Ok;
    }

-    virtual unsigned dbe(const epics::pvData::BitSet& mask)
+    virtual unsigned dbe(const epics::pvData::BitSet& mask) OVERRIDE FINAL
    {
        if(mask.logical_and(meta.maskALARM))
            return DBE_ALARM;
@@ -921,16 +1088,16 @@ struct PVIFMeta : public PVIF

 struct MetaBuilder : public PVIFBuilder
 {
+    explicit MetaBuilder(dbChannel* chan) :PVIFBuilder(chan) {}
    virtual ~MetaBuilder() {}

    // fetch the structure description
-    virtual epics::pvData::FieldConstPtr dtype(dbChannel *channel) OVERRIDE FINAL {
+    virtual epics::pvData::FieldConstPtr dtype() OVERRIDE FINAL {
        throw std::logic_error("Don't call me");
    }

    virtual epics::pvData::FieldBuilderPtr dtype(epics::pvData::FieldBuilderPtr& builder,
-                                                 const std::string& fld,
-                                                 dbChannel *channel)
+                                                 const std::string& fld) OVERRIDE FINAL
    {
        pvd::StandardFieldPtr std(pvd::getStandardField());
        if(fld.empty()) {
@@ -947,8 +1114,7 @@ struct MetaBuilder : public PVIFBuilder
    // Attach to a structure instance.
    // must be of the type returned by dtype().
    // need not be the root structure
-    virtual PVIF* attach(dbChannel *channel,
-                         const epics::pvData::PVStructurePtr& root,
+    virtual PVIF* attach(const epics::pvData::PVStructurePtr& root,
                         const FieldName& fldname) OVERRIDE FINAL
    {
        if(!channel)
@@ -966,18 +1132,18 @@ struct PVIFProc : public PVIF
 {
    PVIFProc(dbChannel *channel) :PVIF(channel) {}

-    virtual void put(epics::pvData::BitSet& mask, unsigned dbe, db_field_log *pfl)
+    virtual void put(epics::pvData::BitSet& mask, unsigned dbe, db_field_log *pfl) OVERRIDE FINAL
    {
        // nothing to get
    }

-    virtual pvd::Status get(const epics::pvData::BitSet& mask, proc_t proc)
+    virtual pvd::Status get(const epics::pvData::BitSet& mask, proc_t proc, bool permit) OVERRIDE FINAL
    {
-        // always process
-        return PVIF::get(mask, PVIF::ProcForce);
+        // always process (if permitted)
+        return PVIF::get(mask, PVIF::ProcForce, permit);
    }

-    virtual unsigned dbe(const epics::pvData::BitSet& mask)
+    virtual unsigned dbe(const epics::pvData::BitSet& mask) OVERRIDE FINAL
    {
        return 0;
    }
@@ -985,20 +1151,21 @@ struct PVIFProc : public PVIF

 struct ProcBuilder : public PVIFBuilder
 {
+    explicit ProcBuilder(dbChannel* chan) :PVIFBuilder(chan) {}
+    virtual ~ProcBuilder() {}
+
    // fetch the structure description
-    virtual epics::pvData::FieldConstPtr dtype(dbChannel *channel) OVERRIDE FINAL {
+    virtual epics::pvData::FieldConstPtr dtype() OVERRIDE FINAL {
        throw std::logic_error("Don't call me");
    }

    virtual epics::pvData::FieldBuilderPtr dtype(epics::pvData::FieldBuilderPtr& builder,
-                                                 const std::string& fld,
-                                                 dbChannel *channel)
+                                                 const std::string& fld) OVERRIDE FINAL
    {
        // invisible
        return builder;
    }
-    virtual PVIF* attach(dbChannel *channel,
-                         const epics::pvData::PVStructurePtr& root,
+    virtual PVIF* attach(const epics::pvData::PVStructurePtr& root,
                         const FieldName& fldname) OVERRIDE FINAL
    {
        if(!channel)
@@ -1010,7 +1177,7 @@ struct ProcBuilder : public PVIFBuilder

 }//namespace

-pvd::Status PVIF::get(const epics::pvData::BitSet& mask, proc_t proc)
+pvd::Status PVIF::get(const epics::pvData::BitSet& mask, proc_t proc, bool permit)
 {
    dbCommon *precord = dbChannelRecord(chan);

@@ -1022,7 +1189,10 @@ pvd::Status PVIF::get(const epics::pvData::BitSet& mask, proc_t proc)
    pvd::Status ret;

    if (tryproc) {
-        if (precord->pact) {
+        if (!permit) {
+            return pvd::Status::error("Process not permitted");
+
+        } else if (precord->pact) {
            if (precord->tpro)
                printf("%s: Active %s\n",
                       epicsThreadGetNameSelf(), precord->name);
@@ -1046,35 +1216,30 @@ pvd::Status PVIF::get(const epics::pvData::BitSet& mask, proc_t proc)

 epics::pvData::FieldBuilderPtr
 PVIFBuilder::dtype(epics::pvData::FieldBuilderPtr& builder,
-                   const std::string &fld,
-                   dbChannel *channel)
+                   const std::string &fld)
 {
    if(fld.empty())
-        throw std::runtime_error("Can't attach this +type to root");
+        throw std::runtime_error(SB()<<"Can't attach +type "<<typeid(*this).name()<<" to root");

-    epics::pvData::FieldConstPtr ftype(this->dtype(channel));
+    epics::pvData::FieldConstPtr ftype(this->dtype());
    if(ftype)
        builder = builder->add(fld, ftype);

    return builder;
 }

-PVIFBuilder* PVIFBuilder::create(const std::string& type)
+PVIFBuilder* PVIFBuilder::create(const std::string& type, dbChannel* chan)
 {
    if(type.empty() || type=="scalar")
-        return new ScalarBuilder;
+        return new ScalarBuilder(chan);
    else if(type=="plain")
-        return new PlainBuilder;
+        return new PlainBuilder(chan);
    else if(type=="any")
-        return new AnyScalarBuilder;
+        return new AnyScalarBuilder(chan);
    else if(type=="meta")
-        return new MetaBuilder;
+        return new MetaBuilder(chan);
    else if(type=="proc")
-        return new ProcBuilder;
+        return new ProcBuilder(chan);
    else
        throw std::runtime_error(std::string("Unknown +type=")+type);
 }
-
-extern "C" {
-    epicsExportAddress(int, qsrvDisableFormat);
-}
@@ -3,6 +3,7 @@

 #include <map>

+#include <asLib.h>
 #include <dbAccess.h>
 #include <dbChannel.h>
 #include <dbStaticLib.h>
@@ -15,7 +16,7 @@
 #include <pv/pvData.h>
 #include <pv/anyscalar.h>

-#include <shareLib.h>
+#include <pv/qsrv.h>

 #ifndef VERSION_INT
 #  define VERSION_INT(V,R,M,P) ( ((V)<<24) | ((R)<<16) | ((M)<<8) | (P))
@@ -29,9 +30,25 @@
 #  define USE_MULTILOCK
 #endif

-epics::pvData::ScalarType DBR2PVD(short dbr);
+namespace epics {
+namespace pvAccess {
+class ChannelRequester;
+}
+}
+
 short PVD2DBR(epics::pvData::ScalarType pvt);

+// copy from PVField (.value sub-field) to DBF buffer
+QSRV_API
+long copyPVD2DBF(const epics::pvData::PVField::const_shared_pointer& in,
+                 void *outbuf, short outdbf, long *outnReq);
+// copy from DBF buffer to PVField (.value sub-field)
+QSRV_API
+long copyDBF2PVD(const epics::pvData::shared_vector<const void>& buf,
+                 const epics::pvData::PVField::shared_pointer& out,
+                 epics::pvData::BitSet &changed,
+                 const epics::pvData::PVStringArray::const_svector& choices);
+
 union dbrbuf {
        epicsInt8		dbf_CHAR;
        epicsUInt8		dbf_UCHAR;
@@ -42,10 +59,17 @@ union dbrbuf {
        epicsUInt32		dbf_ULONG;
        epicsFloat32	dbf_FLOAT;
        epicsFloat64    dbf_DOUBLE;
+
+#ifdef EPICS_VERSION_INT
+#  if EPICS_VERSION_INT>=VERSION_INT(3,16,1,0)
+        epicsInt64      dbf_INT64;
+        epicsUInt64     dbf_UINT64;
+#  endif
+#endif
        char		dbf_STRING[MAX_STRING_SIZE];
 };

-struct epicsShareClass DBCH {
+struct QSRV_API DBCH {
    dbChannel *chan;
    DBCH() :chan(0) {}
    explicit DBCH(dbChannel *ch); // calls dbChannelOpen()
@@ -64,6 +88,23 @@ private:
    void prepare();
 };

+struct ASCred {
+    // string storage must be safely mutable.  cf. asAddClient()
+    std::vector<char> user, host;
+    std::vector<std::vector<char> > groups;
+    void update(const std::tr1::shared_ptr<epics::pvAccess::ChannelRequester>& request);
+};
+
+struct ASCLIENT {
+    ASCLIENTPVT aspvt;
+    std::vector<ASCLIENTPVT> grppvt;
+    ASCLIENT() :aspvt(0) {}
+    ~ASCLIENT();
+    // ASCred storage must remain valid
+    void add(dbChannel* chan, ASCred& cred);
+    bool canWrite();
+};
+
 struct pdbRecordInfo {
    DBENTRY ent;
    pdbRecordInfo(const char *name)
@@ -109,6 +150,13 @@ struct pdbRecordIterator {
 #endif
        m_done = false;
    }
+#if EPICS_VERSION_INT>=VERSION_INT(3,16,1,0)
+    pdbRecordIterator(dbCommon *prec)
+    {
+        dbInitEntryFromRecord(prec, &ent);
+        m_done = false;
+    }
+#endif
    ~pdbRecordIterator()
    {
        dbFinishEntry(&ent);
@@ -132,7 +180,7 @@ struct pdbRecordIterator {
        return m_done ? NULL : (dbCommon*)ent.precnode->precord;
    }
    const char *name() const {
-        return m_done ? NULL : ((dbCommon*)ent.precnode->precord)->name;
+        return m_done ? NULL : ent.precnode->recordname;
    }
    const char *info(const char *key, const char *def =0)
    {
@@ -206,6 +254,7 @@ struct LocalFL
                if(pfl) pfl = dbChannelRunPostChain(pchan, pfl);
            }
        }
+        this->pfl = pfl;
    }
    ~LocalFL() {
        if(ours) db_delete_field_log(pfl);
@@ -229,8 +278,8 @@ struct DBManyLock
 {
    dbLocker *plock;
    DBManyLock() :plock(NULL) {}
-    DBManyLock(const std::vector<dbCommon*>& recs, unsigned flags)
-        :plock(dbLockerAlloc((dbCommon**)&recs[0], recs.size(), flags))
+    DBManyLock(const std::vector<dbCommon*>& recs, unsigned flags=0)
+        :plock(dbLockerAlloc( (recs.size() > 0 ? (dbCommon**)&recs[0] : NULL), recs.size(), flags))
    {
        if(!plock) throw std::invalid_argument("Failed to create locker");
    }
@@ -261,7 +310,7 @@ struct DBManyLocker
 };
 #endif

-struct epicsShareClass FieldName
+struct QSRV_API FieldName
 {
    struct Component {
        std::string name;
@@ -304,7 +353,7 @@ private:
    FieldName& operator=(const FieldName&);
 };

-struct epicsShareClass PVIF {
+struct QSRV_API PVIF {
    PVIF(dbChannel *ch);
    virtual ~PVIF() {}

@@ -319,9 +368,9 @@ struct epicsShareClass PVIF {
    //! Copy from PDB record to pvalue (call dbChannelGet())
    //! caller must lock record
    virtual void put(epics::pvData::BitSet& mask, unsigned dbe, db_field_log *pfl) =0;
-    //! Copy from pvalue to PDB record (call dbChannelPut())
+    //! May copy from pvalue to PDB record (call dbChannelPut())
    //! caller must lock record
-    virtual epics::pvData::Status get(const epics::pvData::BitSet& mask, proc_t proc=ProcInhibit) =0;
+    virtual epics::pvData::Status get(const epics::pvData::BitSet& mask, proc_t proc=ProcInhibit, bool permit=true) =0;
    //! Calculate DBE mask from changed bitset
    virtual unsigned dbe(const epics::pvData::BitSet& mask) =0;

@@ -330,36 +379,51 @@ private:
    PVIF& operator=(const PVIF&);
 };

-struct epicsShareClass PVIFBuilder {
+/** Factory for PVIF instances.
+ *
+ * Caller first passes a mapping type (eg. "scalar") to PVIFBuilder::create()
+ * to obtain a PVIFBuilder which may then by used to create PVIF instances
+ * for specific dbChannel.
+ *
+ * Caller than uses PVIFBuilder::dtype() to obtain (sub)Field descriptions.
+ * eg. more than one of these may be composed into an overall Structure description.
+ *
+ * Caller than creates a PVStructure and uses PVIFBuilder::attach() to
+ * build mappings for each dbChannel in the composed locations.
+ */
+struct QSRV_API PVIFBuilder
+{
+    dbChannel* const channel;

    virtual ~PVIFBuilder() {}

    // fetch the structure description
-    virtual epics::pvData::FieldConstPtr dtype(dbChannel *channel) =0;
+    virtual epics::pvData::FieldConstPtr dtype() =0;

    virtual epics::pvData::FieldBuilderPtr dtype(epics::pvData::FieldBuilderPtr& builder,
-                                                 const std::string& fld,
-                                                 dbChannel *channel);
+                                                 const std::string& fld);

    // Attach to a structure instance.
    // must be of the type returned by dtype().
    // must be the root structure
-    virtual PVIF* attach(dbChannel *channel, const epics::pvData::PVStructurePtr& root, const FieldName& fld) =0;
+    virtual PVIF* attach(const epics::pvData::PVStructurePtr& root, const FieldName& fld) =0;

-    static PVIFBuilder* create(const std::string& name);
+    // entry point for Builder
+    static PVIFBuilder* create(const std::string& mapname, dbChannel* chan);
 protected:
-    PVIFBuilder() {}
+    explicit PVIFBuilder(dbChannel* chan) : channel(chan) {}
 private:
    PVIFBuilder(const PVIFBuilder&);
    PVIFBuilder& operator=(const PVIFBuilder&);
 };

-struct epicsShareClass ScalarBuilder : public PVIFBuilder
+struct QSRV_API ScalarBuilder : public PVIFBuilder
 {
+    explicit ScalarBuilder(dbChannel* chan) :PVIFBuilder(chan) {}
    virtual ~ScalarBuilder() {}

-    virtual epics::pvData::FieldConstPtr dtype(dbChannel *channel) OVERRIDE FINAL;
-    virtual PVIF* attach(dbChannel *channel, const epics::pvData::PVStructurePtr& root, const FieldName& fld) OVERRIDE FINAL;
+    virtual epics::pvData::FieldConstPtr dtype() OVERRIDE FINAL;
+    virtual PVIF* attach(const epics::pvData::PVStructurePtr& root, const FieldName& fld) OVERRIDE FINAL;
 };


@@ -0,0 +1,17 @@
+# Changes to this file may require incrementing
+# the ABI version in CONFIG_QSRV_VERSION
+
+registrar(QSRVRegistrar)
+registrar(installPVAAddLinkHook)
+link("pva", "lsetPVA")
+
+# from demo.cpp
+device(waveform, CONSTANT, devWfPDBDemo, "QSRV Demo")
+# from imagedemo.c
+function(QSRV_image_demo)
+# from pdb.cpp
+# Extra debug info when parsing group definitions
+variable(PDBProviderDebug, int)
+# Number of worker threads for handling monitor updates.
+# Default: 1
+variable(pvaLinkNWorkers, int)
@@ -2,16 +2,15 @@
 # the ABI version in CONFIG_QSRV_VERSION

 registrar(QSRVRegistrar)
-#registrar(installPVAAddLinkHook)
-#link("pva", "lsetPVA")
+registrar(installPVAAddLinkHook)

 # from demo.cpp
 device(waveform, CONSTANT, devWfPDBDemo, "QSRV Demo")
 # from imagedemo.c
 function(QSRV_image_demo)
-# from pvif.cpp
-# Disable mapping of display.format
-variable(qsrvDisableFormat, int)
 # from pdb.cpp
 # Extra debug info when parsing group definitions
 variable(PDBProviderDebug, int)
+# Number of worker threads for handling monitor updates.
+# Default: 1
+variable(pvaLinkNWorkers, int)
@@ -18,8 +18,7 @@
 #include <pv/serverContext.h>
 #include <pv/iocshelper.h>

-#define epicsExportSharedSymbols
-
+#include "pv/qsrv.h"
 #include "pvahelper.h"
 #include "pvif.h"
 #include "pdb.h"
@@ -47,8 +46,49 @@ void QSRVRegistrar_counters()
    epics::registerRefCounter("PDBProvider", &PDBProvider::num_instances);
 }

+long dbLoadGroup(const char* fname)
+{
+    try {
+        if(!fname) {
+            printf("dbLoadGroup(\"file.json\")\n"
+                   "\n"
+                   "Load additional DB group definitions from file.\n");
+            return 1;
+        }
+#ifndef USE_MULTILOCK
+            static bool warned;
+            if(!warned) {
+                warned = true;
+                fprintf(stderr, "ignoring %s\n", fname);
+            }
+#endif
+
+        if(fname[0]=='-') {
+            fname++;
+            if(fname[0]=='*' && fname[1]=='\0') {
+                PDBProvider::group_files.clear();
+            } else {
+                PDBProvider::group_files.remove(fname);
+            }
+        } else {
+            PDBProvider::group_files.remove(fname);
+            PDBProvider::group_files.push_back(fname);
+        }
+
+        return 0;
+    }catch(std::exception& e){
+        fprintf(stderr, "Error: %s\n", e.what());
+        return 1;
+    }
+}
+
 namespace {

+void dbLoadGroupWrap(const char* fname)
+{
+    (void)dbLoadGroup(fname);
+}
+
 void dbgl(int lvl, const char *pattern)
 {
    if(!pattern)
@@ -89,10 +129,21 @@ void QSRVRegistrar()
    QSRVRegistrar_counters();
    pva::ChannelProviderRegistry::servers()->addSingleton<PDBProvider>("QSRV");
    epics::iocshRegister<int, const char*, &dbgl>("dbgl", "level", "pattern");
+    epics::iocshRegister<const char*, &dbLoadGroupWrap>("dbLoadGroup", "jsonfile");
 }

 } // namespace

+unsigned qsrvVersion(void)
+{
+    return QSRV_VERSION_INT;
+}
+
+unsigned qsrvABIVersion(void)
+{
+    return QSRV_ABI_VERSION_INT;
+}
+
 extern "C" {
    epicsExportRegistrar(QSRVRegistrar);
 }
@@ -7,242 +7,276 @@
 * found in the file LICENSE that is included with this distribution.
 \*************************************************************************/

-/* Copyed from EPICS Base 3.16 branch */
+/* Author: Andrew Johnson   Date: 2003-04-08 */

-/* Author: Andrew Johnson	Date: 2003-04-08 */
-
-/* Usage:
- *  softIoc [-D softIoc.dbd] [-h] [-S] [-s] [-a ascf]
- *	[-m macro=value,macro2=value2] [-d file.db]
- *	[-x prefix] [st.cmd]
- *
- *  If used the -D option must come first, and specify the
- *  path to the softIoc.dbd file.  The compile-time install
- *  location is saved in the binary as a default.
- *
- *  Usage information will be printed if -h is given, then
- *  the program will exit normally.
- *
- *  The -S option prevents an interactive shell being started
- *  after all arguments have been processed.
- *
- *  Previous versions accepted a -s option to cause a shell
- *  to be started; this option is still accepted but ignored
- *  since a command shell is now started by default.
- *
- *  Access Security can be enabled with the -a option giving
- *  the name of the configuration file; if any macros were
- *  set with -m before the -a option was given, they will be
- *  used as access security substitution macros.
- *
- *  Any number of -m and -d arguments can be interspersed;
- *  the macros are applied to the following .db files.  Each
- *  later -m option causes earlier macros to be discarded.
- *
- *  The -x option loads the softIocExit.db with the macro
- *  IOC set to the string provided.  This database contains
- *  a subroutine record named $(IOC):exit which has its field
- *  SNAM set to "exit".  When this record is processed, the
- *  subroutine that runs will call epicsExit() with the value
- *  of the field A determining whether the exit status is
- *  EXIT_SUCCESS if (A == 0.0) or EXIT_FAILURE (A != 0.0).
- *
- *  A st.cmd file is optional.  If any databases were loaded
- *  the st.cmd file will be run *after* iocInit.  To perform
- *  iocsh commands before iocInit, all database loading must
- *  be performed by the script itself, or by the user from
- *  the interactive IOC shell.
- */
-
-#include <stddef.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <string.h>
-#include <stdio.h>
+#include <iostream>
+#include <string>
+#include <list>
+#include <stdexcept>

+#include <epicsVersion.h>
+#include <epicsGetopt.h>
 #include "registryFunction.h"
 #include "epicsThread.h"
 #include "epicsExit.h"
 #include "epicsStdio.h"
+#include "epicsString.h"
 #include "dbStaticLib.h"
 #include "subRecord.h"
 #include "dbAccess.h"
 #include "asDbLib.h"
 #include "iocInit.h"
 #include "iocsh.h"
+#include "osiFileName.h"
+
+#include <pv/qsrv.h>

 extern "C" int softIocPVA_registerRecordDeviceDriver(struct dbBase *pdbbase);

-#ifdef __rtems__
-#define DBD_FILE "dbd/softIocPVA.dbd"
-#define EXIT_FILE "db/softIocExit.db"
-#else
-#define DBD_FILE FINAL_LOCATION "/dbd/softIocPVA.dbd"
-#define EXIT_FILE FINAL_LOCATION "/db/softIocExit.db"
+#ifndef EPICS_BASE
+// so IDEs knows EPICS_BASE is a string constant
+#  define EPICS_BASE "/"
+#  error -DEPICS_BASE required
 #endif

-#ifdef VERSION_INT
-#if EPICS_VERSION_INT>=VERSION_INT(3,15,0,1)
-#define USE_EXIT_LATER
+#if EPICS_VERSION_INT>=VERSION_INT(7,0,2,0)
+#  define USE_EXECDIR
 #endif
-#endif
-const char *arg0;
-const char *base_dbd = DBD_FILE;
-const char *exit_db = EXIT_FILE;

+#define DBD_BASE "dbd" OSI_PATH_SEPARATOR "softIocPVA.dbd"
+#define EXIT_BASE "db" OSI_PATH_SEPARATOR "softIocExit.db"
+#define DBD_FILE_REL ".." OSI_PATH_SEPARATOR ".." OSI_PATH_SEPARATOR DBD_BASE
+#define EXIT_FILE_REL ".." OSI_PATH_SEPARATOR ".." OSI_PATH_SEPARATOR EXIT_BASE
+#define DBD_FILE EPICS_BASE OSI_PATH_SEPARATOR DBD_BASE
+#define EXIT_FILE EPICS_BASE OSI_PATH_SEPARATOR EXIT_BASE
+
+namespace {
+
+bool verbose = false;

 static void exitSubroutine(subRecord *precord) {
-#ifdef USE_EXIT_LATER
    epicsExitLater((precord->a == 0.0) ? EXIT_SUCCESS : EXIT_FAILURE);
-#else
-    epicsExit((precord->a == 0.0) ? EXIT_SUCCESS : EXIT_FAILURE);
-#endif
 }

-static void usage(int status) {
-    printf("Usage: %s [-D softIoc.dbd] [-h] [-S] [-a ascf]\n", arg0);
-    puts("\t[-m macro=value,macro2=value2] [-d file.db]");
-    puts("\t[-x prefix] [st.cmd]");
-    puts("Compiled-in path to softIocPVA.dbd is:");
-    printf("\t%s\n", base_dbd);
-    epicsExit(status);
+void usage(const char *arg0, const std::string& base_dbd) {
+    std::cout<<"Usage: "<<arg0<<
+               " [-D softIocPVA.dbd] [-h] [-S] [-s] [-v] [-a ascf]\n"
+               "[-m macro=value,macro2=value2] [-d file.db]\n"
+               "[-x prefix] [st.cmd]\n"
+               "\n"
+               "    -D <dbd>  If used, must come first. Specify the path to the softIocPVA.dbdfile."
+               "        The compile-time install location is saved in the binary as a default.\n"
+               "\n"
+               "    -h  Print this mesage and exit.\n"
+               "\n"
+               "    -S  Prevents an interactive shell being started.\n"
+               "\n"
+               "    -s  Previously caused a shell to be started.  Now accepted and ignored.\n"
+               "\n"
+               "    -v  Verbose, display steps taken during startup.\n"
+               "\n"
+               "    -a <acf>  Access Security configuration file.  Macro substitution is\n"
+               "        performed.\n"
+               "\n"
+               "    -G <json>  DB Group definition file in JSON format.\n"
+               "\n"
+               "    -m <MAC>=<value>,... Set/replace macro definitions used by subsequent -d and\n"
+               "        -a.\n"
+               "\n"
+               "    -d <db>  Load records from file (dbLoadRecords).  Macro substitution is\n"
+               "        performed.\n"
+               "\n"
+               "    -x <prefix>  Load softIocExit.db.  Provides a record \"<prefix>:exit\".\n"
+               "        Put 0 to exit with success, or non-zero to exit with an error.\n"
+               "\n"
+               "Any number of -m and -d arguments can be interspersed; the macros are applied\n"
+               "to the following .db files.  Each later -m option causes earlier macros to be\n"
+               "discarded.\n"
+               "\n"
+               "A st.cmd file is optional.  If any databases were loaded the st.cmd file will\n"
+               "be run *after* iocInit.  To perform iocsh commands before iocInit, all database\n"
+               "loading must be performed by the script itself, or by the user from the\n"
+               "interactive IOC shell.\n"
+               "\n"
+               "Compiled-in path to softIocPVA.dbd is:\n"
+               "\t"<<base_dbd.c_str()<<"\n";
 }

+void errIf(int ret, const std::string& msg)
+{
+    if(ret)
+        throw std::runtime_error(msg);
+}
+
+bool lazy_dbd_loaded;
+
+void lazy_dbd(const std::string& dbd_file) {
+    if(lazy_dbd_loaded) return;
+    lazy_dbd_loaded = true;
+
+    if (verbose)
+        std::cout<<"dbLoadDatabase(\""<<dbd_file<<"\")\n";
+    errIf(dbLoadDatabase(dbd_file.c_str(), NULL, NULL),
+          std::string("Failed to load DBD file: ")+dbd_file);
+
+    if (verbose)
+        std::cout<<"softIocPVA_registerRecordDeviceDriver(pdbbase)\n";
+    softIocPVA_registerRecordDeviceDriver(pdbbase);
+    registryFunctionAdd("exit", (REGISTRYFUNCTION) exitSubroutine);
+}
+
+} // namespace

 int main(int argc, char *argv[])
 {
-    char *dbd_file = const_cast<char*>(base_dbd);
-    char *macros = NULL;
-    char xmacro[PVNAME_STRINGSZ + 4];
-    int startIocsh = 1;	/* default = start shell */
-    int loadedDb = 0;
-    
-    arg0 = strrchr(*argv, '/');
-    if (!arg0) {
-	arg0 = *argv;
-    } else {
-	++arg0;	/* skip the '/' */
-    }
-    
-    --argc, ++argv;
-    
-    /* Do this here in case the dbd file not available */
-    if (argc>0 && **argv=='-' && (*argv)[1]=='h') {
-	usage(EXIT_SUCCESS);
-    }
-    
-    if (argc>1 && **argv=='-' && (*argv)[1]=='D') {
-	dbd_file = *++argv;
-	argc -= 2;
-	++argv;
-    }
-    
-    if (dbLoadDatabase(dbd_file, NULL, NULL)) {
-	epicsExit(EXIT_FAILURE);
-    }
-    
-    softIocPVA_registerRecordDeviceDriver(pdbbase);
-    registryFunctionAdd("exit", (REGISTRYFUNCTION) exitSubroutine);
+    try {
+        std::string dbd_file(DBD_FILE),
+                    exit_file(EXIT_FILE),
+                    macros, // scratch space for macros (may be given more than once)
+                    xmacro;
+        bool interactive = true;
+        bool loadedDb = false;
+        bool ranScript = false;

-    while (argc>1 && **argv == '-') {
-	switch ((*argv)[1]) {
-	case 'a':
-	    if (macros) asSetSubstitutions(macros);
-	    asSetFilename(*++argv);
-	    --argc;
-	    break;
-	
-	case 'd':
-	    if (dbLoadRecords(*++argv, macros)) {
-		epicsExit(EXIT_FAILURE);
-	    }
-	    loadedDb = 1;
-	    --argc;
-	    break;
-	
-	case 'h':
-	    usage(EXIT_SUCCESS);
-	
-	case 'm':
-	    macros = *++argv;
-	    --argc;
-	    break;
-	
-	case 'S':
-	    startIocsh = 0;
-	    break;
-	
-	case 's':
-	    break;
-	
-	case 'x':
-	    epicsSnprintf(xmacro, sizeof xmacro, "IOC=%s", *++argv);
-	    if (dbLoadRecords(exit_db, xmacro)) {
-		epicsExit(EXIT_FAILURE);
-	    }
-	    loadedDb = 1;
-	    --argc;
-	    break;
-	
-	default:
-	    printf("%s: option '%s' not recognized\n", arg0, *argv);
-	    usage(EXIT_FAILURE);
-	}
-	--argc;
-	++argv;
+#ifdef USE_EXECDIR
+        // attempt to compute relative paths
+        {
+            std::string prefix;
+            char *cprefix = epicsGetExecDir();
+            if(cprefix) {
+                try {
+                    prefix = cprefix;
+                    free(cprefix);
+                } catch(...) {
+                    free(cprefix);
+                    throw;
+                }
+            }
+
+            dbd_file = prefix + DBD_FILE_REL;
+            exit_file = prefix + EXIT_FILE_REL;
+        }
+#endif
+
+        int opt;
+
+        while ((opt = getopt(argc, argv, "ha:D:d:m:Ssx:G:v")) != -1) {
+            switch (opt) {
+            case 'h':               /* Print usage */
+                usage(argv[0], dbd_file);
+                epicsExit(0);
+                return 0;
+            default:
+                usage(argv[0], dbd_file);
+                std::cerr<<"Unknown argument: -"<<char(opt)<<"\n";
+                epicsExit(2);
+                return 2;
+            case 'a':
+                lazy_dbd(dbd_file);
+                if (!macros.empty()) {
+                    if (verbose)
+                        std::cout<<"asSetSubstitutions(\""<<macros<<"\")\n";
+                    if(asSetSubstitutions(macros.c_str()))
+                        throw std::bad_alloc();
+                }
+                if (verbose)
+                    std::cout<<"asSetFilename(\""<<optarg<<"\")\n";
+                if(asSetFilename(optarg))
+                    throw std::bad_alloc();
+                break;
+            case 'D':
+                if(lazy_dbd_loaded) {
+                    throw std::runtime_error("-D specified too late.  softIocPVA.dbd already loaded.\n");
+                }
+                dbd_file = optarg;
+                break;
+            case 'd':
+                lazy_dbd(dbd_file);
+                if (verbose) {
+                    std::cout<<"dbLoadRecords(\""<<optarg<<"\"";
+                    if(!macros.empty())
+                        std::cout<<", \""<<macros<<"\"";
+                    std::cout<<")\n";
+                }
+                errIf(dbLoadRecords(optarg, macros.c_str()),
+                      std::string("Failed to load: ")+optarg);
+                loadedDb = true;
+                break;
+            case 'm':
+                macros = optarg;
+                break;
+            case 'S':
+                interactive = false;
+                break;
+            case 's':
+                break; // historical
+            case 'v':
+                verbose = true;
+                break;
+            case 'x':
+                lazy_dbd(dbd_file);
+                xmacro  = "IOC=";
+                xmacro += optarg;
+                errIf(dbLoadRecords(exit_file.c_str(), xmacro.c_str()),
+                      std::string("Failed to load: ")+exit_file);
+                loadedDb = true;
+                break;
+            case 'G':
+                dbLoadGroup(optarg);
+                break;
+            }
+        }
+
+        lazy_dbd(dbd_file);
+
+        if(optind<argc)  {
+            // run script
+            // ignore any extra positional args (historical)
+
+            if (verbose)
+                std::cout<<"# Begin "<<argv[optind]<<"\n";
+            errIf(iocsh(argv[optind]),
+                        std::string("Error in ")+argv[optind]);
+            if (verbose)
+                std::cout<<"# End "<<argv[optind]<<"\n";
+
+            epicsThreadSleep(0.2);
+            ranScript = true;    /* Assume the script has done any necessary initialization */
+        }
+
+        if (loadedDb) {
+            if (verbose)
+                std::cout<<"iocInit()\n";
+            iocInit();
+            epicsThreadSleep(0.2);
+        }
+
+        if(interactive) {
+            std::cout.flush();
+            std::cerr.flush();
+            if(iocsh(NULL)) {
+                epicsExit(1);
+                return 1;
+            }
+
+        } else {
+            if (loadedDb || ranScript) {
+                epicsThreadExitMain();
+
+            } else {
+                usage(argv[0], dbd_file);
+                std::cerr<<"Nothing to do!\n";
+                epicsExit(1);
+                return 1;
+            }
+        }
+
+        epicsExit(0);
+        return 0;
+
+    }catch(std::exception& e){
+        std::cerr<<"Error: "<<e.what()<<"\n";
+        epicsExit(2);
+        return 2;
    }
-    
-    if (argc>0 && **argv=='-') {
-	switch((*argv)[1]) {
-	case 'a':
-	case 'd':
-	case 'm':
-	case 'x':
-	    printf("%s: missing argument to option '%s'\n", arg0, *argv);
-	    usage(EXIT_FAILURE);
-	
-	case 'h':
-	    usage(EXIT_SUCCESS);
-	
-	case 'S':
-	    startIocsh = 0;
-	    break;
-	
-	case 's':
-	    break;
-	
-	default:
-	    printf("%s: option '%s' not recognized\n", arg0, *argv);
-	    usage(EXIT_FAILURE);
-	}
-	--argc;
-	++argv;
-    }
-    
-    if (loadedDb) {
-	iocInit();
-	epicsThreadSleep(0.2);
-    }
-    
-    /* run user's startup script */
-    if (argc>0) {
-	if (iocsh(*argv)) epicsExit(EXIT_FAILURE);
-	epicsThreadSleep(0.2);
-	loadedDb = 1;	/* Give it the benefit of the doubt... */
-    }
-    
-    /* start an interactive shell if it was requested */
-    if (startIocsh) {
-	iocsh(NULL);
-    } else {
-	if (loadedDb) {
-	    epicsThreadExitMain();
-	} else {
-	    printf("%s: Nothing to do!\n", arg0);
-	    usage(EXIT_FAILURE);
-	}
-    }
-    epicsExit(EXIT_SUCCESS);
-    /*Note that the following statement will never be executed*/
-    return 0;
 }
@@ -0,0 +1,135 @@
+
+#include <typeinfo>
+#include <stdexcept>
+
+#include <epicsEvent.h>
+#include <epicsGuard.h>
+#include <epicsThread.h>
+#include <errlog.h>
+
+#include <pv/sharedPtr.h>
+
+#include "helper.h"
+#include "tpool.h"
+
+typedef epicsGuard<epicsMutex> Guard;
+typedef epicsGuardRelease<epicsMutex> UnGuard;
+
+WorkQueue::WorkQueue(const std::string& name)
+    :name(name)
+    ,state(Idle)
+{}
+
+WorkQueue::~WorkQueue() { close(); }
+
+void WorkQueue::start(unsigned nworkers, unsigned prio)
+{
+    Guard G(mutex);
+
+    if(state!=Idle)
+        throw std::logic_error("Already started");
+
+    try {
+        state = Active;
+
+        for(unsigned i=0; i<nworkers; i++) {
+            p2p::auto_ptr<epicsThread> worker(new epicsThread(*this, name.c_str(),
+                                                              epicsThreadGetStackSize(epicsThreadStackSmall),
+                                                              prio));
+
+            worker->start();
+
+            workers.push_back(worker.get());
+            worker.release();
+        }
+    }catch(...){
+        UnGuard U(G); // unlock as close() blocks to join any workers which were started
+        close();
+        throw;
+    }
+}
+
+void WorkQueue::close()
+{
+    workers_t temp;
+
+    {
+        Guard G(mutex);
+        if(state!=Active)
+            return;
+
+        temp.swap(workers);
+        state = Stopping;
+    }
+
+    wakeup.signal();
+
+    for(workers_t::iterator it(temp.begin()), end(temp.end()); it!=end; ++it)
+    {
+        (*it)->exitWait();
+        delete *it;
+    }
+
+    {
+        Guard G(mutex);
+        state = Idle;
+    }
+}
+
+void WorkQueue::add(const value_type& work)
+{
+    bool empty;
+
+    {
+        Guard G(mutex);
+        if(state!=Active)
+            return;
+
+        empty = queue.empty();
+
+        queue.push_back(work);
+    }
+
+    if(empty) {
+        wakeup.signal();
+    }
+}
+
+void WorkQueue::run()
+{
+    Guard G(mutex);
+
+    std::tr1::shared_ptr<epicsThreadRunable> work;
+
+    while(state==Active) {
+
+        if(!queue.empty()) {
+            work = queue.front().lock();
+            queue.pop_front();
+        }
+
+        bool last = queue.empty();
+
+        {
+            UnGuard U(G);
+
+            if(work) {
+                try {
+                    work->run();
+                    work.reset();
+                }catch(std::exception& e){
+                    errlogPrintf("%s Unhandled exception from %s: %s\n",
+                                 name.c_str(), typeid(work.get()).name(), e.what());
+                    work.reset();
+                }
+            }
+
+            if(last) {
+                wakeup.wait();
+            }
+        }
+    }
+
+    // pass along the close() signal to next worker
+    wakeup.signal();
+}
@@ -0,0 +1,52 @@
+#ifndef TPOOL_H
+#define TPOOL_H
+
+#include <stdexcept>
+#include <deque>
+#include <vector>
+#include <string>
+
+#include <errlog.h>
+#include <epicsThread.h>
+#include <epicsMutex.h>
+#include <epicsEvent.h>
+
+#include <pv/sharedPtr.h>
+
+struct WorkQueue : private epicsThreadRunable
+{
+    typedef std::tr1::weak_ptr<epicsThreadRunable> value_type;
+
+private:
+    const std::string name;
+
+    epicsMutex mutex;
+
+    enum state_t {
+        Idle,
+        Active,
+        Stopping,
+    } state;
+
+    typedef std::deque<value_type> queue_t;
+    queue_t queue;
+
+    epicsEvent wakeup;
+
+    typedef std::vector<epicsThread*> workers_t;
+    workers_t workers;
+
+public:
+    WorkQueue(const std::string& name);
+    virtual ~WorkQueue();
+
+    void start(unsigned nworkers=1, unsigned prio = epicsThreadPriorityLow);
+    void close();
+
+    void add(const value_type& work);
+
+private:
+    virtual void run();
+};
+
+#endif // TPOOL_H
@@ -14,6 +14,10 @@ p2pTestIoc_DBD += base.dbd
 # Tests explicitly create/destory PDB provider
 #p2pTestIoc_DBD += qsrv.dbd

+TARGETS += $(COMMON_DIR)/pvaLinkTestIoc.dbd
+pvaLinkTestIoc_DBD += base.dbd
+pvaLinkTestIoc_DBD += qsrv.dbd
+
 PROD_SRCS += utilitiesx.cpp
 PROD_LIBS += pvAccess pvData
 PROD_LIBS += $(EPICS_BASE_IOC_LIBS)
@@ -40,20 +44,27 @@ testpdb_SRCS += p2pTestIoc_registerRecordDeviceDriver.cpp
 testpdb_LIBS += qsrv
 TESTS += testpdb

-PROD_HOST += check_consist
+TESTPROD_HOST += check_consist
 check_consist_SRCS += check_consist.cpp

-#TESTPROD_HOST += testpvalink
-testpvalink_SRCS += testpvalink.cpp
-testpvalink_SRCS += p2pTestIoc_registerRecordDeviceDriver.cpp
-testpvalink_LIBS += qsrv
-#TESTS += testpvalink
-
 ifdef BASE_3_16
+TESTPROD_HOST += testpvalink
+testpvalink_SRCS += testpvalink.cpp
+testpvalink_SRCS += pvaLinkTestIoc_registerRecordDeviceDriver.cpp
+testpvalink_LIBS += qsrv
+TESTS += testpvalink
+
 TESTPROD_HOST += testgroupconfig
 testgroupconfig_SRCS += testgroupconfig
 testgroupconfig_LIBS += qsrv pvAccess pvData
 testgroupconfig_LIBS += $(EPICS_BASE_IOC_LIBS)
+TESTS += testgroupconfig
+
+TESTPROD_HOST += testdbf_copy
+testdbf_copy_SRCS += testdbf_copy
+testdbf_copy_LIBS += qsrv pvAccess pvData
+testdbf_copy_LIBS += $(EPICS_BASE_IOC_LIBS)
+TESTS += testdbf_copy
 endif

 TESTSCRIPTS_HOST += $(TESTS:%=%.t)
@@ -0,0 +1,271 @@
+#include <stdexcept>
+
+#include <pv/pvUnitTest.h>
+#include <testMain.h>
+
+#include <dbStaticLib.h>
+#include <epicsTypes.h>
+#include <pv/valueBuilder.h>
+#include <pv/pvData.h>
+
+
+#include "pvif.h"
+
+namespace pvd = epics::pvData;
+
+namespace {
+template<pvd::ScalarType ENUM, typename DBF, typename E>
+void testPVD2DBR_scalar(unsigned dbf, typename pvd::meta::arg_type<typename pvd::ScalarTypeTraits<ENUM>::type>::type V, E expect)
+{
+    testDiag("testPVD2DBR_scalar(%s, %s)", pvd::ScalarTypeFunc::name(ENUM), dbGetFieldTypeString(dbf));
+
+    pvd::PVStructure::shared_pointer top(pvd::ValueBuilder()
+                                         .add<ENUM>("value", V)
+                                         .buildPVStructure());
+
+    DBF buf;
+
+    copyPVD2DBF(top->getSubFieldT("value"), &buf, dbf, NULL);
+
+    testEqual(buf, expect);
+}
+
+void testPVD2DBR_enum()
+{
+    testDiag("testPVD2DBR_enum()");
+
+    pvd::shared_vector<std::string> choices(3);
+    choices[0] = "zero";
+    choices[1] = "one";
+    choices[2] = "two";
+
+    pvd::PVStructure::shared_pointer top(pvd::ValueBuilder()
+                                         .addNested("value")
+                                             .add<pvd::pvInt>("index", 1)
+                                             .add("choices", pvd::static_shared_vector_cast<const void>(pvd::freeze(choices)))
+                                         .endNested()
+                                         .buildPVStructure());
+
+    {
+        epicsEnum16 ival;
+
+        copyPVD2DBF(top->getSubFieldT("value"), &ival, DBF_ENUM, NULL);
+        testEqual(ival, 1);
+
+        ival = 0;
+
+        testOk1(!!top->getSubField("value"));
+        copyPVD2DBF(top->getSubFieldT("value"), &ival, DBF_USHORT, NULL);
+        testEqual(ival, 1);
+    }
+
+    {
+        epicsUInt32 ival;
+
+        copyPVD2DBF(top->getSubFieldT("value"), &ival, DBF_LONG, NULL);
+        testEqual(ival, 1u);
+    }
+
+    char sval[MAX_STRING_SIZE];
+
+    copyPVD2DBF(top->getSubFieldT("value"), sval, DBF_STRING, NULL);
+    testEqual(std::string(sval) , "one");
+}
+
+void testPVD2DBR_array()
+{
+    testDiag("testPVD2DBR_array()");
+
+    pvd::shared_vector<const pvd::uint32> arr;
+    {
+        pvd::shared_vector<pvd::uint32> iarr(3);
+        iarr[0] = 1; iarr[1] = 2; iarr[2] = 3;
+        arr = pvd::freeze(iarr);
+    }
+
+    pvd::PVStructure::shared_pointer top(pvd::ValueBuilder()
+                                         .add("value", pvd::static_shared_vector_cast<const void>(arr))
+                                         .buildPVStructure());
+
+    {
+        epicsUInt16 sarr[5];
+
+        {
+            long nreq = 5;
+            copyPVD2DBF(top->getSubFieldT("value"), sarr, DBF_SHORT, &nreq);
+            testEqual(nreq, 3);
+        }
+
+        testEqual(sarr[0], arr[0]);
+        testEqual(sarr[1], arr[1]);
+        testEqual(sarr[2], arr[2]);
+    }
+
+    {
+        char sarr[MAX_STRING_SIZE*5];
+
+        {
+            long nreq = 5;
+            copyPVD2DBF(top->getSubFieldT("value"), sarr, DBF_STRING, &nreq);
+            testEqual(nreq, 3);
+        }
+
+        testEqual(sarr[0*MAX_STRING_SIZE+0], '1');
+        testEqual(int(sarr[0*MAX_STRING_SIZE+1]), int('\0'));
+        testEqual(sarr[1*MAX_STRING_SIZE+0], '2');
+        testEqual(int(sarr[1*MAX_STRING_SIZE+1]), int('\0'));
+        testEqual(sarr[2*MAX_STRING_SIZE+0], '3');
+        testEqual(int(sarr[2*MAX_STRING_SIZE+1]), int('\0'));
+    }
+}
+
+template<typename input_t, typename output_t>
+void testDBR2PVD_scalar(const input_t& input,
+                        const output_t& expect)
+{
+    pvd::ScalarType  in = (pvd::ScalarType)pvd::ScalarTypeID<input_t>::value;
+    pvd::ScalarType out = (pvd::ScalarType)pvd::ScalarTypeID<output_t>::value;
+    testDiag("testDBR2PVD_scalar(%s, %s)", pvd::ScalarTypeFunc::name(in), pvd::ScalarTypeFunc::name(out));
+
+    pvd::PVStructure::shared_pointer top(pvd::getPVDataCreate()->createPVStructure(pvd::getFieldCreate()->createFieldBuilder()
+                                                                                   ->add("value", out) // initially zero or ""
+                                                                                   ->createStructure()));
+    pvd::PVStringArray::const_svector choices;
+    pvd::BitSet changed;
+
+    pvd::shared_vector<input_t> buf(1);
+    buf[0] = input;
+
+    copyDBF2PVD(pvd::static_shared_vector_cast<const void>(pvd::freeze(buf)),
+                top->getSubFieldT("value"), changed, choices);
+
+    output_t actual = top->getSubFieldT<pvd::PVScalar>("value")->getAs<output_t>();
+    testEqual(actual, expect);
+    testOk1(changed.get(top->getSubFieldT("value")->getFieldOffset()));
+}
+
+template<typename input_t>
+void testDBR2PVD_enum(const input_t& input, pvd::int32 expect)
+{
+    testDiag("testDBR2PVD_enum()");
+
+    pvd::shared_vector<const std::string> choices;
+    {
+        pvd::shared_vector<std::string> temp(3);
+        temp[0] = "zero";
+        temp[1] = "one";
+        temp[2] = "two";
+        choices = pvd::freeze(temp);
+    }
+
+    pvd::PVStructure::shared_pointer top(pvd::ValueBuilder()
+                                         .addNested("value")
+                                             .add<pvd::pvInt>("index", 0)
+                                             .add("choices", pvd::static_shared_vector_cast<const void>(choices))
+                                         .endNested()
+                                         .buildPVStructure());
+
+    pvd::BitSet changed;
+
+    pvd::shared_vector<input_t> buf(1);
+    buf[0] = input;
+
+    copyDBF2PVD(pvd::static_shared_vector_cast<const void>(pvd::freeze(buf)),
+                top->getSubFieldT("value"), changed, choices);
+
+    pvd::int32 actual = top->getSubFieldT<pvd::PVScalar>("value.index")->getAs<pvd::int32>();
+    testShow()<<top;
+    testShow()<<changed;
+    testEqual(actual, expect);
+    testOk1(changed.get(top->getSubFieldT("value.index")->getFieldOffset()));
+}
+
+void testDBR2PVD_array()
+{
+    testDiag("testDBR2PVD_array()");
+
+    pvd::PVStructure::shared_pointer top(pvd::getPVDataCreate()->createPVStructure(pvd::getFieldCreate()->createFieldBuilder()
+                                                                                   ->addArray("value", pvd::pvInt) // initially zero or ""
+                                                                                   ->createStructure()));
+    pvd::PVStringArray::const_svector choices;
+    pvd::BitSet changed;
+
+    {
+        pvd::shared_vector<pvd::uint32> buf(3);
+        buf[0] = 1; buf[1] = 2; buf[2] = 3;
+        copyDBF2PVD(pvd::static_shared_vector_cast<const void>(pvd::freeze(buf)),
+                    top->getSubFieldT("value"), changed, choices);
+
+        pvd::PVIntArray::const_svector arr(top->getSubFieldT<pvd::PVIntArray>("value")->view());
+        testEqual(arr.size(), 3u);
+        testEqual(arr[0], 1);
+        testEqual(arr[1], 2);
+        testEqual(arr[2], 3);
+        testOk1(changed.get(top->getSubFieldT("value")->getFieldOffset()));
+    }
+
+    changed.clear();
+
+    {
+        pvd::shared_vector<std::string> buf(4);
+        buf[0] = "4";
+        buf[1] = "5";
+        buf[2] = "6";
+        buf[3] = "7";
+
+        copyDBF2PVD(pvd::static_shared_vector_cast<const void>(pvd::freeze(buf)),
+                    top->getSubFieldT("value"), changed, choices);
+
+        pvd::PVIntArray::const_svector arr(top->getSubFieldT<pvd::PVIntArray>("value")->view());
+        testEqual(arr.size(), 4u);
+        testEqual(arr[0], 4);
+        testEqual(arr[1], 5);
+        testEqual(arr[2], 6);
+        testEqual(arr[3], 7);
+        testOk1(changed.get(top->getSubFieldT("value")->getFieldOffset()));
+    }
+}
+
+}
+
+MAIN(testdbf_copy)
+{
+    testPlan(53);
+    try{
+        testPVD2DBR_scalar<pvd::pvDouble, double>(DBF_DOUBLE, 42.2, 42.2);
+        testPVD2DBR_scalar<pvd::pvDouble, pvd::uint16>(DBF_USHORT, 42.2, 42u);
+
+        testPVD2DBR_scalar<pvd::pvInt, pvd::int32>(DBF_LONG, 42, 42);
+        testPVD2DBR_scalar<pvd::pvInt, char[MAX_STRING_SIZE]>(DBF_STRING, 42, std::string("42"));
+
+        testPVD2DBR_scalar<pvd::pvLong, pvd::int64>(DBF_INT64, 42, 42);
+        testPVD2DBR_scalar<pvd::pvLong, char[MAX_STRING_SIZE]>(DBF_STRING, 42, std::string("42"));
+
+        testPVD2DBR_scalar<pvd::pvUShort, pvd::uint16>(DBF_USHORT, 41u, 41);
+        testPVD2DBR_scalar<pvd::pvByte, pvd::int8>(DBF_CHAR, 41, 41);
+
+        testPVD2DBR_scalar<pvd::pvString, char[MAX_STRING_SIZE]>(DBF_STRING, "hello", std::string("hello"));
+        testPVD2DBR_scalar<pvd::pvString, pvd::int32>(DBF_LONG, "-100", -100);
+
+        //testPVD2DBR_scalar<pvd::pvBoolean, pvd::int8>(DBF_CHAR, true, 1);
+
+        testPVD2DBR_enum();
+
+        testPVD2DBR_array();
+
+        testDBR2PVD_scalar<double, double>(42.2, 42.2);
+        testDBR2PVD_scalar<pvd::uint16, double>(42u, 42.0);
+        testDBR2PVD_scalar<pvd::int32, pvd::int32>(-41, -41);
+        testDBR2PVD_scalar<std::string, pvd::int32>("-41", -41);
+        testDBR2PVD_scalar<std::string, std::string>("hello", "hello");
+        testDBR2PVD_scalar<pvd::int32, std::string>(-42, "-42");
+
+        testDBR2PVD_enum<pvd::uint32>(2, 2);
+        testDBR2PVD_enum<std::string>("two", 2);
+
+        testDBR2PVD_array();
+    }catch(std::exception& e){
+        testFail("Unexpected exception: %s", e.what());
+    }
+    return testDone();
+}
@@ -0,0 +1,4 @@
+record (waveform, "TEST") {
+field(FTVL, "SHORT")
+field(NELM, "10")
+}
@@ -18,6 +18,7 @@ void test_parse()
    "  \"+atomic\":false,\n"
    "  \"fld\":{\n"
    "    \"+type\": \"simple\","
+    "    \"+channel\": \"VAL\","
    "    \"+putorder\": -4"
    "  },\n"
    "  \"\":{\n"
@@ -29,7 +30,7 @@ void test_parse()
    "}";

    GroupConfig conf;
-    GroupConfig::parse(txt, conf);
+    GroupConfig::parse(txt, "rec", conf);

    testOk(conf.warning.empty(), "Warnings: %s", conf.warning.c_str());

@@ -37,7 +38,7 @@ void test_parse()
    testOk1(conf.groups["grpa"].atomic_set);

    testEqual(conf.groups["grpa"].fields["fld"].type, "simple");
-    testEqual(conf.groups["grpa"].fields["fld"].channel, "");
+    testEqual(conf.groups["grpa"].fields["fld"].channel, "rec.VAL");
    testEqual(conf.groups["grpa"].fields["fld"].putorder, -4);

    testEqual(conf.groups["grpa"].fields[""].type, "top");
@@ -49,15 +50,15 @@ void test_fail()

    {
        GroupConfig conf;
-        testThrows(std::runtime_error, GroupConfig::parse("{", conf));
+        testThrows(std::runtime_error, GroupConfig::parse("{", "", conf));
    }
    {
        GroupConfig conf;
-        testThrows(std::runtime_error, GroupConfig::parse("{\"G\":{\"F\":{\"K\":{}}}}", conf));
+        testThrows(std::runtime_error, GroupConfig::parse("{\"G\":{\"F\":{\"K\":{}}}}", "", conf));
    }
    {
        GroupConfig conf;
-        testThrows(std::runtime_error, GroupConfig::parse("{\"G\":5}", conf));
+        testThrows(std::runtime_error, GroupConfig::parse("{\"G\":5}", "", conf));
    }
 }

@@ -292,6 +292,45 @@ void testGroupMonitorTriggers(pvac::ClientProvider& client)
 #endif
 }

+void testFilters(pvac::ClientProvider& client)
+{
+    testDiag("test w/ server side filters");
+
+    pvd::shared_vector<const pvd::int16> expected;
+    {
+        pvd::shared_vector<pvd::int16> scratch(9);
+        scratch[0] = 9;
+        scratch[1] = 8;
+        scratch[2] = 7;
+        scratch[3] = 6;
+        scratch[4] = 5;
+        scratch[5] = 4;
+        scratch[6] = 3;
+        scratch[7] = 2;
+        scratch[8] = 1;
+        expected = pvd::freeze(scratch);
+    }
+
+    client.connect("TEST").put().set("value", expected).exec();
+
+    pvd::PVStructure::const_shared_pointer root(client.connect("TEST").get());
+
+    testFieldEqual<pvd::PVShortArray>(root, "value", expected);
+
+    root = client.connect("TEST.{\"arr\":{\"i\":2}}").get();
+    {
+        pvd::shared_vector<pvd::int16> scratch(5);
+        scratch[0] = 9;
+        scratch[1] = 7;
+        scratch[2] = 5;
+        scratch[3] = 3;
+        scratch[4] = 1;
+        expected = pvd::freeze(scratch);
+    }
+
+    testFieldEqual<pvd::PVShortArray>(root, "value", expected);
+}
+
 } // namespace

 extern "C"
@@ -299,7 +338,7 @@ void p2pTestIoc_registerRecordDeviceDriver(struct dbBase *);

 MAIN(testpdb)
 {
-    testPlan(93);
+    testPlan(95);
    try{
        QSRVRegistrar_counters();
        epics::RefSnapshot ref_before;
@@ -318,6 +357,7 @@ MAIN(testpdb)
 #ifdef USE_MULTILOCK
        testdbReadDatabase("testpdb-groups.db", NULL, NULL);
 #endif
+        testdbReadDatabase("testfilters.db", NULL, NULL);

        IOC.init();

@@ -333,6 +373,7 @@ MAIN(testpdb)
            testSingleMonitor(client);
            testGroupMonitor(client);
            testGroupMonitorTriggers(client);
+            testFilters(client);

            testEqual(epics::atomic::get(PDBProvider::num_instances), 1u);
        }
@@ -1,9 +1,13 @@

 #include <dbUnitTest.h>
 #include <testMain.h>
+#include <int64inRecord.h>
+#include <int64outRecord.h>

+#include <pv/qsrv.h>
 #include "utilities.h"
 #include "pvalink.h"
+#include "pv/qsrv.h"

 namespace {

@@ -11,66 +15,77 @@ void testGet()
 {
    testDiag("==== testGet ====");

-    testdbGetFieldEqual("target:li.VAL", DBF_LONG, 42);
-    testdbGetFieldEqual("src:li1.VAL", DBF_LONG, 0);
-    testdbGetFieldEqual("src:li1.INP", DBF_STRING, "{\"pva\":\"target:li\"}");
+    int64inRecord *i1 = (int64inRecord*)testdbRecordPtr("src:i1");

-    testdbPutFieldOk("src:li1.PROC", DBF_LONG, 1);
-    //TODO: wait for dbEvent queue update
-    epicsThreadSleep(0.1);
+    while(!dbIsLinkConnected(&i1->inp))
+        testqsrvWaitForLinkEvent(&i1->inp);

-    testdbGetFieldEqual("src:li1.VAL", DBF_LONG, 42);
+    testdbGetFieldEqual("target:i.VAL", DBF_INT64, 42LL);

-    testdbPutFieldOk("src:li1.INP", DBF_STRING, "{\"pva\":\"target:ai\"}");
+    testdbGetFieldEqual("src:i1.VAL", DBF_INT64, 0LL); // value before first process

-    testdbGetFieldEqual("src:li1.VAL", DBF_LONG, 42);
+    testdbGetFieldEqual("src:i1.INP", DBF_STRING, "{\"pva\":\"target:i\"}");

-    //TODO: wait for pvalink worker update
-    epicsThreadSleep(0.1);
-    testdbPutFieldOk("src:li1.PROC", DBF_LONG, 1);
-    //TODO: wait for dbEvent queue update
-    epicsThreadSleep(0.1);
+    testdbPutFieldOk("src:i1.PROC", DBF_INT64, 1LL);

-    testdbGetFieldEqual("src:li1.VAL", DBF_LONG, 4);
+    testdbGetFieldEqual("src:i1.VAL", DBF_INT64, 42LL);
+
+    testdbPutFieldOk("src:i1.INP", DBF_STRING, "{\"pva\":\"target:ai\"}");
+
+    while(!dbIsLinkConnected(&i1->inp))
+        testqsrvWaitForLinkEvent(&i1->inp);
+
+    testdbGetFieldEqual("src:i1.VAL", DBF_INT64, 42LL); // changing link doesn't automatically process
+
+    testdbPutFieldOk("src:i1.PROC", DBF_INT64, 1LL);
+
+    testdbGetFieldEqual("src:i1.VAL", DBF_INT64, 4LL); // now it's changed
 }

 void testPut()
 {
    testDiag("==== testPut ====");
-    testdbGetFieldEqual("target:li2.VAL", DBF_LONG, 43);
-    testdbGetFieldEqual("src:li2.VAL", DBF_LONG, 0);
-    testdbGetFieldEqual("src:li2.INP", DBF_STRING, "{\"pva\":\"target:l2\"}");

-    testdbPutFieldOk("src:li2.VAL", DBF_LONG, 14);
+    int64outRecord *o2 = (int64outRecord*)testdbRecordPtr("src:o2");

-    testdbGetFieldEqual("target:li2.VAL", DBF_LONG, 14);
-    testdbGetFieldEqual("src:li2.VAL", DBF_LONG, 14);
+    while(!dbIsLinkConnected(&o2->out))
+        testqsrvWaitForLinkEvent(&o2->out);
+
+    testdbGetFieldEqual("target:i2.VAL", DBF_INT64, 43LL);
+    testdbGetFieldEqual("src:o2.VAL", DBF_INT64, 0LL);
+    testdbGetFieldEqual("src:o2.OUT", DBF_STRING, "{\"pva\":\"target:i2\"}");
+
+    testdbPutFieldOk("src:o2.VAL", DBF_INT64, 14LL);
+
+    testdbGetFieldEqual("target:i2.VAL", DBF_INT64, 14LL);
+    testdbGetFieldEqual("src:o2.VAL", DBF_INT64, 14LL);
 }

 } // namespace

 extern "C"
-void p2pTestIoc_registerRecordDeviceDriver(struct dbBase *);
+void pvaLinkTestIoc_registerRecordDeviceDriver(struct dbBase *);

 MAIN(testpvalink)
 {
-    testPlan(0);
+    testPlan(15);

    // Disable PVA client provider, use local/QSRV provider
    pvaLinkIsolate = 1;
-    pvaLinkDebug = 5;

    try {
        TestIOC IOC;

-        testdbReadDatabase("p2pTestIoc.dbd", NULL, NULL);
-        p2pTestIoc_registerRecordDeviceDriver(pdbbase);
+        testdbReadDatabase("pvaLinkTestIoc.dbd", NULL, NULL);
+        pvaLinkTestIoc_registerRecordDeviceDriver(pdbbase);
        testdbReadDatabase("testpvalink.db", NULL, NULL);

        IOC.init();
        testGet();
        testPut();
+        testqsrvShutdownOk();
        IOC.shutdown();
+        testqsrvCleanup();

    }catch(std::exception& e){
        testFail("Unexpected exception: %s", e.what());
@@ -1,21 +1,21 @@

 # used by testGet()
-record(longin, "target:li") {
+record(int64in, "target:i") {
    field(VAL, "42")
 }
 record(ai, "target:ai") {
    field(VAL, "4.0")
 }

-record(longin, "src:li1") {
-    field(INP, {pva:"target:li"})
+record(int64in, "src:i1") {
+    field(INP, {"pva":"target:i"})
 }

 # used by testPut()
-record(longin, "target:li2") {
+record(int64in, "target:i2") {
    field(VAL, "43")
 }

-record(longout, "src:li2") {
-    field(OUT, {pva:"target:li"})
+record(int64out, "src:o2") {
+    field(OUT, {"pva":"target:i2"})
 }
@@ -7,6 +7,14 @@
 #include <aiRecord.h>
 #include <mbbiRecord.h>
 #include <stringinRecord.h>
+#include <epicsVersion.h>
+
+#ifdef EPICS_VERSION_INT
+#  if EPICS_VERSION_INT>=VERSION_INT(3,16,1,0)
+#    define USE_INT64
+#    include <int64inRecord.h>
+#  endif
+#endif

 #include "helper.h"
 #include "pvif.h"
@@ -28,11 +36,17 @@ void testScalar()
    testdbReadDatabase("p2pTestIoc.dbd", NULL, NULL);
    p2pTestIoc_registerRecordDeviceDriver(pdbbase);
    testdbReadDatabase("testpvif.db", NULL, NULL);
+#ifdef USE_INT64
+    testdbReadDatabase("testpvif64.db", NULL, NULL);
+#endif

    longinRecord *prec_li = (longinRecord*)testdbRecordPtr("test:li");
    stringinRecord *prec_si = (stringinRecord*)testdbRecordPtr("test:si");
    aiRecord *prec_ai = (aiRecord*)testdbRecordPtr("test:ai");
    mbbiRecord *prec_mbbi = (mbbiRecord*)testdbRecordPtr("test:mbbi");
+#ifdef USE_INT64
+    int64inRecord *prec_i64 = (int64inRecord*)testdbRecordPtr("test:i64");
+#endif

    IOC.init();

@@ -44,6 +58,9 @@ void testScalar()
    DBCH chan_ai("test:ai");
    DBCH chan_ai_rval("test:ai.RVAL");
    DBCH chan_mbbi("test:mbbi");
+#ifdef USE_INT64
+    DBCH chan_i64("test:i64");
+#endif
    testEqual(dbChannelFieldType(chan_li), DBR_LONG);
    testEqual(dbChannelFieldType(chan_si), DBR_STRING);
    testEqual(dbChannelFieldType(chan_ai), DBR_DOUBLE);
@@ -53,30 +70,62 @@ void testScalar()
    testEqual(dbChannelFinalFieldType(chan_ai), DBR_DOUBLE);
    testEqual(dbChannelFinalFieldType(chan_ai_rval), DBR_LONG);
    testEqual(dbChannelFinalFieldType(chan_mbbi), DBR_ENUM);
+#ifdef USE_INT64
+    testEqual(dbChannelFinalFieldType(chan_i64), DBR_INT64);
+#endif

-    ScalarBuilder builder;
+    pvd::PVStructurePtr root;
+    p2p::auto_ptr<PVIF> pvif_li;
+#ifdef USE_INT64
+    p2p::auto_ptr<PVIF> pvif_i64;
+#endif
+    p2p::auto_ptr<PVIF> pvif_si;
+    p2p::auto_ptr<PVIF> pvif_ai;
+    p2p::auto_ptr<PVIF> pvif_ai_rval;
+    p2p::auto_ptr<PVIF> pvif_mbbi;
+    {
+        ScalarBuilder builder_li(chan_li);
+#ifdef USE_INT64
+        ScalarBuilder builder_i64(chan_i64);
+#endif
+        ScalarBuilder builder_si(chan_si);
+        ScalarBuilder builder_ai(chan_ai);
+        ScalarBuilder builder_ai_rval(chan_ai_rval);
+        ScalarBuilder builder_mbbi(chan_mbbi);

-    pvd::FieldConstPtr dtype_li(builder.dtype(chan_li));
-    pvd::FieldConstPtr dtype_si(builder.dtype(chan_si));
-    pvd::FieldConstPtr dtype_ai(builder.dtype(chan_ai));
-    pvd::FieldConstPtr dtype_ai_rval(builder.dtype(chan_ai_rval));
-    pvd::FieldConstPtr dtype_mbbi(builder.dtype(chan_mbbi));
+        pvd::FieldConstPtr dtype_li(builder_li.dtype());
+    #ifdef USE_INT64
+        pvd::FieldConstPtr dtype_i64(builder_i64.dtype());
+    #endif
+        pvd::FieldConstPtr dtype_si(builder_si.dtype());
+        pvd::FieldConstPtr dtype_ai(builder_ai.dtype());
+        pvd::FieldConstPtr dtype_ai_rval(builder_ai_rval.dtype());
+        pvd::FieldConstPtr dtype_mbbi(builder_mbbi.dtype());

-    pvd::StructureConstPtr dtype_root(pvd::getFieldCreate()->createFieldBuilder()
-                                      ->add("li", dtype_li)
-                                      ->add("si", dtype_si)
-                                      ->add("ai", dtype_ai)
-                                      ->add("ai_rval", dtype_ai_rval)
-                                      ->add("mbbi", dtype_mbbi)
-                                      ->createStructure());
+        pvd::StructureConstPtr dtype_root(pvd::getFieldCreate()->createFieldBuilder()
+                                          ->add("li", dtype_li)
+    #ifdef USE_INT64
+                                          ->add("i64", dtype_i64)
+    #endif
+                                          ->add("si", dtype_si)
+                                          ->add("ai", dtype_ai)
+                                          ->add("ai_rval", dtype_ai_rval)
+                                          ->add("mbbi", dtype_mbbi)
+                                          ->createStructure());

-    pvd::PVStructurePtr root(pvd::getPVDataCreate()->createPVStructure(dtype_root));
+        root = pvd::getPVDataCreate()->createPVStructure(dtype_root);

-    p2p::auto_ptr<PVIF> pvif_li(builder.attach(chan_li, root, FieldName("li")));
-    p2p::auto_ptr<PVIF> pvif_si(builder.attach(chan_si, root, FieldName("si")));
-    p2p::auto_ptr<PVIF> pvif_ai(builder.attach(chan_ai, root, FieldName("ai")));
-    p2p::auto_ptr<PVIF> pvif_ai_rval(builder.attach(chan_ai_rval, root, FieldName("ai_rval")));
-    p2p::auto_ptr<PVIF> pvif_mbbi(builder.attach(chan_mbbi, root, FieldName("mbbi")));
+        pvif_li.reset(builder_li.attach(root, FieldName("li")));
+    #ifdef USE_INT64
+        pvif_i64.reset(builder_i64.attach(root, FieldName("i64")));
+    #endif
+        pvif_si.reset(builder_si.attach(root, FieldName("si")));
+        pvif_ai.reset(builder_ai.attach(root, FieldName("ai")));
+        pvif_ai_rval.reset(builder_ai_rval.attach(root, FieldName("ai_rval")));
+        pvif_mbbi.reset(builder_mbbi.attach(root, FieldName("mbbi")));
+    }
+
+    testShow()<<"Entire structure\n"<<root;

    pvd::BitSet mask;

@@ -94,21 +143,56 @@ void testScalar()
              .set(OFF("li.alarm.message"))
              .set(OFF("li.timeStamp.secondsPastEpoch"))
              .set(OFF("li.timeStamp.nanoseconds"))
-              //.set(OFF("li.timeStamp.userTag"))
              .set(OFF("li.display.limitHigh"))
              .set(OFF("li.display.limitLow"))
              .set(OFF("li.display.description"))
-              .set(OFF("li.display.format"))
              .set(OFF("li.display.units"))
+              .set(OFF("li.display.precision"))
+              .set(OFF("li.display.form.index"))
              .set(OFF("li.control.limitHigh"))
              .set(OFF("li.control.limitLow"))
              .set(OFF("li.valueAlarm.highWarningLimit"))
              .set(OFF("li.valueAlarm.lowWarningLimit"))
              .set(OFF("li.valueAlarm.highAlarmLimit"))
-              .set(OFF("li.valueAlarm.lowAlarmLimit")));
+              .set(OFF("li.valueAlarm.lowAlarmLimit")))
+            <<" li changes\n"<<root->stream().show(mask);
 #undef OFF
    mask.clear();

+#ifdef USE_INT64
+
+    dbScanLock((dbCommon*)prec_i64);
+    prec_i64->time.secPastEpoch = 0x12345678;
+    prec_i64->time.nsec = 12345678;
+    pvif_i64->put(mask, DBE_VALUE|DBE_ALARM|DBE_PROPERTY, NULL);
+    dbScanUnlock((dbCommon*)prec_i64);
+
+#define OFF(NAME) (epicsUInt32)root->getSubFieldT(NAME)->getFieldOffset()
+    testEqual(mask, pvd::BitSet()
+              .set(OFF("i64.value"))
+              .set(OFF("i64.alarm.severity"))
+              .set(OFF("i64.alarm.status"))
+              .set(OFF("i64.alarm.message"))
+              .set(OFF("i64.timeStamp.secondsPastEpoch"))
+              .set(OFF("i64.timeStamp.nanoseconds"))
+              .set(OFF("i64.display.limitHigh"))
+              .set(OFF("i64.display.limitLow"))
+              .set(OFF("i64.display.description"))
+              .set(OFF("i64.display.units"))
+              .set(OFF("i64.display.precision"))
+              .set(OFF("i64.display.form.index"))
+              .set(OFF("i64.control.limitHigh"))
+              .set(OFF("i64.control.limitLow"))
+              .set(OFF("i64.valueAlarm.highWarningLimit"))
+              .set(OFF("i64.valueAlarm.lowWarningLimit"))
+              .set(OFF("i64.valueAlarm.highAlarmLimit"))
+              .set(OFF("i64.valueAlarm.lowAlarmLimit")))
+            <<" i64 changes\n"<<root->stream().show(mask);
+#undef OFF
+    mask.clear();
+
+#endif
+
    dbScanLock((dbCommon*)prec_si);
    prec_si->time.secPastEpoch = 0x12345678;
    prec_si->time.nsec = 12345678;
@@ -127,10 +211,12 @@ void testScalar()
              .set(OFF("si.display.limitHigh"))
              .set(OFF("si.display.limitLow"))
              .set(OFF("si.display.description"))
-              .set(OFF("si.display.format"))
              .set(OFF("si.display.units"))
+              .set(OFF("si.display.precision"))
+              .set(OFF("si.display.form.index"))
              .set(OFF("si.control.limitHigh"))
-              .set(OFF("si.control.limitLow")));
+              .set(OFF("si.control.limitLow")))
+            <<" si changes\n"<<root->stream().show(mask);
 #undef OFF
    mask.clear();

@@ -153,7 +239,8 @@ void testScalar()
              .set(OFF("ai.display.limitHigh"))
              .set(OFF("ai.display.limitLow"))
              .set(OFF("ai.display.description"))
-              .set(OFF("ai.display.format"))
+              .set(OFF("ai.display.precision"))
+              .set(OFF("ai.display.form.index"))
              .set(OFF("ai.display.units"))
              .set(OFF("ai.control.limitHigh"))
              .set(OFF("ai.control.limitLow"))
@@ -171,15 +258,17 @@ void testScalar()
              .set(OFF("ai_rval.display.limitHigh"))
              .set(OFF("ai_rval.display.limitLow"))
              .set(OFF("ai_rval.display.description"))
-              .set(OFF("ai_rval.display.format"))
              .set(OFF("ai_rval.display.units"))
+              .set(OFF("ai_rval.display.precision"))
+              .set(OFF("ai_rval.display.form.index"))
              .set(OFF("ai_rval.control.limitHigh"))
              .set(OFF("ai_rval.control.limitLow"))
              .set(OFF("ai_rval.valueAlarm.highWarningLimit"))
              .set(OFF("ai_rval.valueAlarm.lowWarningLimit"))
              .set(OFF("ai_rval.valueAlarm.highAlarmLimit"))
              .set(OFF("ai_rval.valueAlarm.lowAlarmLimit"))
-              );
+              )
+            <<" ai changes\n"<<root->stream().show(mask);
 #undef OFF
    mask.clear();

@@ -198,7 +287,8 @@ void testScalar()
              .set(OFF("mbbi.alarm.message"))
              .set(OFF("mbbi.timeStamp.secondsPastEpoch"))
              .set(OFF("mbbi.timeStamp.nanoseconds"))
-              .set(OFF("mbbi.timeStamp.userTag")));
+              .set(OFF("mbbi.timeStamp.userTag")))
+            <<" mbbi changes\n"<<root->stream().show(mask);
 #undef OFF
    mask.clear();

@@ -210,6 +300,22 @@ void testScalar()
    testFieldEqual<pvd::PVDouble>(root, "li.display.limitHigh", 100.0);
    testFieldEqual<pvd::PVDouble>(root, "li.display.limitLow", 10.0);
    testFieldEqual<pvd::PVString>(root, "li.display.units", "arb");
+    testFieldEqual<pvd::PVInt>(root, "li.display.precision", 0);
+    testFieldEqual<pvd::PVInt>(root, "li.display.form.index", 4); // "Hex"
+
+#ifdef USE_INT64
+    testFieldEqual<pvd::PVLong>(root, "i64.value", 0x7fffffffffffffffLL);
+    testFieldEqual<pvd::PVInt>(root, "i64.alarm.severity", 1);
+    testFieldEqual<pvd::PVInt>(root, "i64.alarm.status", 1);
+    testFieldEqual<pvd::PVLong>(root, "i64.timeStamp.secondsPastEpoch", 0x12345678+POSIX_TIME_AT_EPICS_EPOCH);
+    testFieldEqual<pvd::PVInt>(root, "i64.timeStamp.nanoseconds", 12345678);
+    testFieldEqual<pvd::PVDouble>(root, "i64.display.limitHigh", 100.0);
+    testFieldEqual<pvd::PVDouble>(root, "i64.display.limitLow", 10.0);
+    testTodoBegin("Bug in int64inRecord get_units()");
+    testFieldEqual<pvd::PVString>(root, "i64.display.units", "arb");
+    testTodoEnd();
+    testFieldEqual<pvd::PVInt>(root, "i64.display.precision", 0);
+#endif

    testFieldEqual<pvd::PVString>(root, "si.value", "hello");
    testFieldEqual<pvd::PVInt>(root, "si.alarm.severity", 0);
@@ -223,8 +329,9 @@ void testScalar()
    testFieldEqual<pvd::PVInt>(root, "ai.timeStamp.nanoseconds", 12345678);
    testFieldEqual<pvd::PVDouble>(root, "ai.display.limitHigh", 200.0);
    testFieldEqual<pvd::PVDouble>(root, "ai.display.limitLow", 20.0);
-    testFieldEqual<pvd::PVString>(root, "ai.display.format", "");
+    testFieldEqual<pvd::PVInt>(root, "ai.display.precision", 2);
    testFieldEqual<pvd::PVString>(root, "ai.display.units", "foo");
+    testFieldEqual<pvd::PVInt>(root, "ai.display.form.index", 0);

    testFieldEqual<pvd::PVInt>(root, "ai_rval.value", 1234);
    testFieldEqual<pvd::PVInt>(root, "ai_rval.alarm.severity", 2);
@@ -233,8 +340,9 @@ void testScalar()
    testFieldEqual<pvd::PVInt>(root, "ai_rval.timeStamp.userTag", 0);
    testFieldEqual<pvd::PVDouble>(root, "ai_rval.display.limitHigh", 2147483647.0);
    testFieldEqual<pvd::PVDouble>(root, "ai_rval.display.limitLow", -2147483648.0);
-    testFieldEqual<pvd::PVString>(root, "ai_rval.display.format", "");
+    testFieldEqual<pvd::PVInt>(root, "ai_rval.display.precision", 0);
    testFieldEqual<pvd::PVString>(root, "ai_rval.display.units", "");
+    testFieldEqual<pvd::PVInt>(root, "ai_rval.display.form.index", 0);

    testFieldEqual<pvd::PVInt>(root, "mbbi.value.index", 1);
    testFieldEqual<pvd::PVInt>(root, "mbbi.alarm.severity", 0);
@@ -250,6 +358,9 @@ void testScalar()
    }

    root->getSubFieldT<pvd::PVInt>("li.value")->put(102043);
+#ifdef USE_INT64
+    root->getSubFieldT<pvd::PVLong>("i64.value")->put(-0x8000000000000000LL);
+#endif
    root->getSubFieldT<pvd::PVString>("si.value")->put("world");
    root->getSubFieldT<pvd::PVDouble>("ai.value")->put(44.4);
    root->getSubFieldT<pvd::PVInt>("ai_rval.value")->put(2143);
@@ -262,6 +373,24 @@ void testScalar()
    testEqual(prec_li->val, 102043);
    dbScanUnlock((dbCommon*)prec_li);

+#ifdef USE_INT64
+    dbScanLock((dbCommon*)prec_i64);
+    mask.clear();
+    mask.set(root->getSubFieldT("i64.value")->getFieldOffset());
+    pvif_i64->get(mask);
+    testEqual(prec_i64->val, epicsInt64(-0x8000000000000000LL));
+    dbScanUnlock((dbCommon*)prec_i64);
+#endif
+
+#ifdef USE_INT64
+    dbScanLock((dbCommon*)prec_i64);
+    mask.clear();
+    mask.set(root->getSubFieldT("i64.value")->getFieldOffset());
+    pvif_i64->get(mask);
+    testEqual(prec_i64->val, epicsInt64(-0x8000000000000000LL));
+    dbScanUnlock((dbCommon*)prec_i64);
+#endif
+
    dbScanLock((dbCommon*)prec_si);
    mask.clear();
    mask.set(root->getSubFieldT("si.value")->getFieldOffset());
@@ -289,8 +418,6 @@ void testScalar()
    pvif_mbbi->get(mask);
    testEqual(prec_mbbi->val, 2);
    dbScanUnlock((dbCommon*)prec_mbbi);
-
-    iocshCmd("stopPVAServer");
 }

 void testPlain()
@@ -315,30 +442,37 @@ void testPlain()
    DBCH chan_ai("test:ai");
    DBCH chan_mbbi("test:mbbi");

-    p2p::auto_ptr<PVIFBuilder> builder;
+    pvd::PVStructurePtr root;
+    p2p::auto_ptr<PVIF> pvif_li;
+    p2p::auto_ptr<PVIF> pvif_si;
+    p2p::auto_ptr<PVIF> pvif_ai;
+    p2p::auto_ptr<PVIF> pvif_mbbi;
    {
-        builder.reset(PVIFBuilder::create("plain"));
+        p2p::auto_ptr<PVIFBuilder> builder_li(PVIFBuilder::create("plain", chan_li));
+        p2p::auto_ptr<PVIFBuilder> builder_si(PVIFBuilder::create("plain", chan_si));
+        p2p::auto_ptr<PVIFBuilder> builder_ai(PVIFBuilder::create("plain", chan_ai));
+        p2p::auto_ptr<PVIFBuilder> builder_mbbi(PVIFBuilder::create("plain", chan_mbbi));
+
+        pvd::FieldConstPtr dtype_li(builder_li->dtype());
+        pvd::FieldConstPtr dtype_si(builder_si->dtype());
+        pvd::FieldConstPtr dtype_ai(builder_ai->dtype());
+        pvd::FieldConstPtr dtype_mbbi(builder_mbbi->dtype());
+
+        pvd::StructureConstPtr dtype_root(pvd::getFieldCreate()->createFieldBuilder()
+                                          ->add("li", dtype_li)
+                                          ->add("si", dtype_si)
+                                          ->add("ai", dtype_ai)
+                                          ->add("mbbi", dtype_mbbi)
+                                          ->createStructure());
+
+        root = pvd::getPVDataCreate()->createPVStructure(dtype_root);
+
+        pvif_li.reset(builder_li->attach(root, FieldName("li")));
+        pvif_si.reset(builder_si->attach(root, FieldName("si")));
+        pvif_ai.reset(builder_ai->attach(root, FieldName("ai")));
+        pvif_mbbi.reset(builder_mbbi->attach(root, FieldName("mbbi")));
    }

-    pvd::FieldConstPtr dtype_li(builder->dtype(chan_li));
-    pvd::FieldConstPtr dtype_si(builder->dtype(chan_si));
-    pvd::FieldConstPtr dtype_ai(builder->dtype(chan_ai));
-    pvd::FieldConstPtr dtype_mbbi(builder->dtype(chan_mbbi));
-
-    pvd::StructureConstPtr dtype_root(pvd::getFieldCreate()->createFieldBuilder()
-                                      ->add("li", dtype_li)
-                                      ->add("si", dtype_si)
-                                      ->add("ai", dtype_ai)
-                                      ->add("mbbi", dtype_mbbi)
-                                      ->createStructure());
-
-    pvd::PVStructurePtr root(pvd::getPVDataCreate()->createPVStructure(dtype_root));
-
-    p2p::auto_ptr<PVIF> pvif_li(builder->attach(chan_li, root, FieldName("li")));
-    p2p::auto_ptr<PVIF> pvif_si(builder->attach(chan_si, root, FieldName("si")));
-    p2p::auto_ptr<PVIF> pvif_ai(builder->attach(chan_ai, root, FieldName("ai")));
-    p2p::auto_ptr<PVIF> pvif_mbbi(builder->attach(chan_mbbi, root, FieldName("mbbi")));
-
    pvd::BitSet mask;

    mask.clear();
@@ -412,12 +546,84 @@ void testPlain()
    dbScanUnlock((dbCommon*)prec_mbbi);
 }

+void testFilters()
+{
+    testDiag("testFilter");
+
+#if EPICS_VERSION_INT < VERSION_INT(7, 0, 0, 0)
+    testSkip(5, "Needs Base >=7.0");
+#else
+
+    TestIOC IOC;
+
+    testdbReadDatabase("p2pTestIoc.dbd", NULL, NULL);
+    p2pTestIoc_registerRecordDeviceDriver(pdbbase);
+    testdbReadDatabase("testfilters.db", NULL, NULL);
+
+    IOC.init();
+
+    static const epicsInt32 arr[] = {9, 8, 7, 6, 5, 4, 3, 2, 1};
+    testdbPutArrFieldOk("TEST", DBF_LONG, 9, arr);
+
+#if EPICS_VERSION_INT > VERSION_INT(7, 0, 5, 0)
+    testdbGetArrFieldEqual("TEST", DBF_LONG, 10, 9, arr);
+    testdbGetArrFieldEqual("TEST.{\"arr\":{\"s\":5}}", DBF_LONG, 10, 4, arr+5);
+
+    static const epicsInt32 arr2[] = {9, 7, 5, 3, 1};
+    testdbGetArrFieldEqual("TEST.{\"arr\":{\"i\":2}}", DBF_LONG, 10, 5, arr2);
+
+#else
+    testSkip(3, "dbUnitTest doesn't use dbChannel");
+#endif
+
+    pvd::PVStructurePtr root;
+    p2p::auto_ptr<PVIF> pvif;
+
+    DBCH chan("TEST.{\"arr\":{\"i\":2}}");
+    ScalarBuilder builder(chan);
+
+    root = pvd::FieldBuilder::begin()
+            ->add("dut", builder.dtype())
+            ->createStructure()->build();
+
+    pvif.reset(builder.attach(root, FieldName("dut")));
+
+    LocalFL fl(0, chan.chan);
+
+    pvd::shared_vector<pvd::int16> scratch(5);
+    scratch[0] = 9;
+    scratch[1] = 7;
+    scratch[2] = 5;
+    scratch[3] = 3;
+    scratch[4] = 1;
+    pvd::shared_vector<const pvd::int16> expected(pvd::freeze(scratch));
+
+    dbCommon *prec =  testdbRecordPtr("TEST");
+    dbScanLock(prec);
+    pvd::BitSet changed;
+    pvif->put(changed, DBE_VALUE, fl.pfl);
+    dbScanUnlock(prec);
+
+    testFieldEqual<pvd::PVShortArray>(root, "dut.value", expected);
+#endif // >= 7.0
+}
+
 } // namespace

 MAIN(testpvif)
 {
-    testPlan(71);
+    testPlan(80
+#ifdef USE_INT64
+             +13
+#endif
+             );
+#ifdef USE_INT64
+    testDiag("Testing of 64-bit field access");
+#else
+    testDiag("64-bit field access not supported");
+#endif
    testScalar();
    testPlain();
+    testFilters();
    return testDone();
 }
@@ -5,6 +5,7 @@ record(longin, "test:li") {
  field(EGU, "arb")
  field(HOPR, "100")
  field(LOPR, "10")
+  info(Q:form, "Hex")
 }
 record(ai, "test:ai") {
  field(VAL, "42.2")
@@ -0,0 +1,8 @@
+record(int64in, "test:i64") {
+  field(VAL, "0x7fffffffffffffff")
+  field(SEVR, "1")
+  field(STAT, "1")
+  field(EGU, "arb")
+  field(HOPR, "100")
+  field(LOPR, "10")
+}
Author	SHA1	Message	Date
Michael Davidsaver	466d41ebb9	1.3.1	2021-06-30 10:05:36 -07:00
Michael Davidsaver	d18e2219b3	pvalink: missing NULL check	2021-04-23 15:29:45 -07:00
Michael Davidsaver	ff22538129	pdb: Create db_field_log for GETs	2021-03-17 13:22:42 -07:00
Michael Davidsaver	67e668795e	test PDB get w/ filter	2021-03-17 13:22:42 -07:00
Michael Davidsaver	1ac2e6c809	ci: github actions add mingw	2021-03-17 12:47:34 -07:00
Michael Davidsaver	40b327cfcb	testpvif 3.15 compat	2021-03-12 11:45:13 -08:00
Michael Davidsaver	20edb8fdf5	CI update	2021-03-12 11:09:26 -08:00
Michael Davidsaver	babda345b4	ci: appveyor fix mingw builds	2021-03-12 09:59:02 -08:00
Michael Davidsaver	04fbaf5a2e	fix LocalFL	2021-03-12 09:59:02 -08:00
Michael Davidsaver	3438fde276	test: cover server side filters	2021-03-12 09:59:02 -08:00
Simon Rose	b515fd30ca	Syncing softMain.cpp with epics-base	2021-03-12 07:09:22 -08:00
Michael Davidsaver	ad8b77e19f	Set next development version	2021-02-26 13:26:20 -08:00
Michael Davidsaver	b8389ac6a1	1.3.0	2021-02-26 13:24:26 -08:00
Andrew Johnson	d47008ee53	Update GHA config Better job names Upload .tap files as artifacts	2021-01-05 22:12:33 -06:00
Andrew Johnson	a709854f0d	Update .appveyor.yml for newer ci-tools Also set the correct notification email address	2021-01-05 22:12:33 -06:00
Andrew Johnson	527afaf856	Merge pull request #35 from anjohnson/master About to merge my yajl5 branch to 7.0	2021-01-05 21:37:48 -06:00
Michael Davidsaver	d65af720d1	doc	2020-11-28 10:45:34 -08:00
Michael Davidsaver	503cf414be	3.15 compat	2020-11-28 10:45:34 -08:00
Michael Davidsaver	1682c991d2	use dbChannel* in builder	2020-11-28 10:45:34 -08:00
Michael Davidsaver	c68c0038e6	store dbChannel* in builder	2020-11-28 10:45:34 -08:00
Michael Davidsaver	b69c25feb6	pass dbChannel* to PVIFBuilder::create()	2020-11-28 10:45:34 -08:00
Michael Davidsaver	eae493e732	delay PVIFBuilder::create	2020-11-28 10:45:34 -08:00
Michael Davidsaver	29d00e7e38	simplify	2020-11-28 10:45:34 -08:00
Michael Davidsaver	1335d75403	add dbLoadGroup()	2020-11-28 10:45:34 -08:00
Michael Davidsaver	c32cc1ba3c	combine group info() processing	2020-11-28 10:44:32 -08:00
Michael Davidsaver	f5278ef4ac	groups: move record name prepend into parser hooks Also, accumulate config instead of replacing	2020-11-28 10:44:32 -08:00
Michael Davidsaver	b9d3ad8f90	ci: travis-ci -> github actions	2020-11-28 10:44:32 -08:00
Andrew Johnson	0e772037ee	Add -v (verbose) flag to softIocPVA Only display the startup steps with -v Print each step before running it, so any error messages follow.	2020-10-28 23:28:08 -05:00
Michael Davidsaver	d100eac09e	update README	2020-08-30 09:29:54 -07:00
Andrew Johnson	740aad6712	Modify test database to avoid break when json5 merged No other changes will be needed when merging the json5 branch into Base-7.0, these changes let testpvalink pass with and without it.	2020-08-09 00:55:51 -05:00
Michael Davidsaver	c66f224602	Set next development version	2020-07-26 13:43:02 -07:00
Michael Davidsaver	b1d28cca39	Update version numbers for release	2020-07-26 13:41:51 -07:00
Michael Davidsaver	50be5b6025	release notes	2020-07-11 14:08:26 -07:00
Michael Davidsaver	8e7a1ad295	checkDISP	2020-07-05 23:06:30 -07:00
Michael Davidsaver	e894ae753f	create second dbChannel for DBE_PROPERTY for groups	2020-07-05 23:06:30 -07:00
Michael Davidsaver	4559f483bf	create second dbChannel for DBE_PROPERTY Create second channel, and second set of filter states, for subscription to DBE_PROPERTY. Accommodate filters which drop events.	2020-07-02 22:45:58 -07:00
Michael Davidsaver	e843db5d27	softMain compat	2020-06-01 19:54:08 -07:00
Michael Davidsaver	8363c870bd	adapt softMain as softIocPVA	2020-06-01 19:54:08 -07:00
Michael Davidsaver	9499137bb4	update softMain.cpp from Base circa 7.0.4	2020-06-01 19:54:08 -07:00
Michael Davidsaver	c4798dc2bc	shareLib.h cleanup	2020-06-01 18:22:08 -07:00
Michael Davidsaver	11eeed9d0c	notes	2020-06-01 18:22:08 -07:00
Andrew Johnson	94d1eedc75	Set next development version	2020-05-28 16:26:01 -05:00
Andrew Johnson	cb13435d15	Update version numbers for release	2020-05-28 15:43:34 -05:00
Michael Davidsaver	cda2222ed5	p2p: deprecation notice	2020-05-19 17:06:28 -07:00
Michael Davidsaver	68708ff530	p2p: Fix EPICS_PVA*_AUTO_ADDR_LIST	2020-05-19 16:48:53 -07:00
Michael Davidsaver	137ecfed56	ci-scripts 2.3.2 (with appveyor)	2020-04-23 15:16:41 -07:00
Michael Davidsaver	29a6f261dc	travis use ci-scripts	2019-12-20 12:06:11 -08:00
Michael Davidsaver	1d9fbbea0b	don't install check_consist	2019-12-19 18:45:38 -08:00
Michael Davidsaver	536f4dd02f	finalize doxygen	2019-11-03 20:08:49 -08:00
Andrew Johnson	21ae754869	Incr version and set development flag after release	2019-10-31 18:00:34 -05:00
Andrew Johnson	3024f9fb0c	Clear development flag for 1.2.2 release	2019-10-31 17:58:09 -05:00
Andrew Johnson	58a2159969	Indent sub-bullets by 2 spaces for pandoc gfm	2019-10-31 17:55:59 -05:00
Michael Davidsaver	c200dd22f1	doc for 1.2.2	2019-10-31 10:55:12 -07:00
Michael Davidsaver	9c6fb5c539	more WIN32 include order games	2019-09-26 13:46:26 -07:00
Freddie Akeroyd	54a882d844	MSVC is picky about vector access	2019-09-25 13:47:03 -07:00
Andrew Johnson	c7a54de469	Move include of osiSock.h below db headers for Windows	2019-09-07 09:43:11 +02:00
Michael Davidsaver	c2ee7c9dc4	m_data removal Try to avoid stepping on this vxWorks landmine.	2019-09-06 14:57:03 -07:00
Ralph Lange	3e59a4b6a8	rtd-ci: add read-the-docs integration	2019-09-06 15:42:44 +02:00
Michael Davidsaver	0e0400022c	vx const fixup std::set iteration really should always be const as mutation would invalidate the ordering.	2019-09-05 20:02:46 -07:00
Michael Davidsaver	bdbf57350b	replace shareLib.h with QSRV_API and hopefully avoid at least some of the maddening include order bugs so common with sharedLib.h.	2019-09-05 20:01:56 -07:00
Michael Davidsaver	2e58e54e1d	Merge branch 'auth' * auth: minor re-add missing enum_t asLib check against PeerInfo	2019-08-31 19:22:23 -07:00
Michael Davidsaver	ddfd746c62	minor	2019-08-31 19:18:56 -07:00
Michael Davidsaver	e41269230c	re-add missing enum_t	2019-08-13 20:08:40 -07:00
Michael Davidsaver	c3b6fc08b8	re-add missing enum_t	2019-08-13 20:07:26 -07:00
Andrew Johnson	d70a2ff8c3	Update version number to 1.2.2 DEVELOPMENT	2019-08-13 11:08:34 -05:00
Michael Davidsaver	ce39c93201	release notes for 1.2.1	2019-07-24 17:42:17 -07:00
Michael Davidsaver	d7314eaef4	asLib check against PeerInfo Check Put permissions	2019-05-16 18:19:38 -07:00
Michael Davidsaver	5170c2230d	missing 'else' doesn't actually change logic flow, but wasn't intentional.	2019-05-13 14:09:38 -07:00
Andrew Johnson	3ed88f2559	testpvalink: Provide expected values as 64-bit integers	2019-05-10 15:02:08 -05:00
Andrew Johnson	2c533d79ab	Finish off conversion of testpvalink to int64 record types	2019-05-09 18:05:24 -05:00
Michael Davidsaver	a72bc31a44	fix release doc	2019-03-20 14:58:47 -07:00
Michael Davidsaver	521154fd52	1.2.0	2019-03-18 11:44:01 -07:00
Andrew Johnson	6d1cbd87fd	Make a local copy of softIocExit.db for standalone builds	2019-03-12 10:52:50 -05:00
Michael Davidsaver	68904852b9	update release notes	2019-03-11 14:51:39 -07:00
Michael Davidsaver	a3dc712174	avoid unnecessary copy dev. leftovers...	2019-03-11 14:47:42 -07:00
Michael Davidsaver	1ce449d40d	parse unknown format as number forward compatibility	2019-01-15 19:15:21 -08:00
Michael Davidsaver	67b384bb6c	doc Q:form	2019-01-15 19:15:21 -08:00
Michael Davidsaver	f3d7d7cd8f	change display.format, add display.form and .precision Replace printf-style format string with enum + integer. ScalarBuilder explode scalar()/scalarArray()	2019-01-15 18:48:18 -08:00
Michael Davidsaver	7bc5cbf957	fix int64 in pva link	2019-01-08 10:27:57 -08:00
Michael Davidsaver	0ab4f937a7	test 64-bit integer field access	2019-01-08 09:31:51 -08:00
Michael Davidsaver	3c5a5c805c	fix 64-bit integer field access	2019-01-08 09:10:10 -08:00
Michael Davidsaver	c79074e7fa	doc	2018-12-23 09:26:28 -08:00
Andrew Johnson	a245adb5cf	Fix symbol exports for Windows builds	2018-11-28 16:07:11 -06:00
Michael Davidsaver	c1cec998a9	1.1.0	2018-11-26 12:13:28 -08:00
Michael Davidsaver	c80a88c112	rename doxygen to .dox	2018-11-26 12:10:38 -08:00
Michael Davidsaver	1d689d7e96	update travis-ci	2018-10-29 14:15:28 -07:00
Michael Davidsaver	95b23fc6bc	minor	2018-10-04 21:07:10 -07:00
Michael Davidsaver	afead32e9d	p2p more config	2018-10-04 21:07:10 -07:00
Michael Davidsaver	db3fdf54e9	allow setting p2pReadOnly from config file	2018-10-03 14:45:58 -07:00
Andrew Johnson	5f434aec59	Add Makefile rule for qsrv.dbd.d to avoid spurious build warning Prevents "dbdExpand.pl: No input files for ../O.Common/qsrv.dbd"	2018-07-15 08:34:51 -07:00
Michael Davidsaver	a4f35714a0	placate MSVC, take 2	2018-06-27 15:46:10 -07:00
Michael Davidsaver	dfd28f5474	attempt to placate MSVC Apparently suffer from template cleverness overload	2018-06-27 15:23:18 -07:00
Michael Davidsaver	0d69aab6e9	fix README	2018-06-20 15:35:15 -07:00
Michael Davidsaver	b157d73c0b	more dllimport/export	2018-06-10 10:15:33 -05:00
Michael Davidsaver	b215396225	drop extraneous epicsExport.h	2018-06-10 09:59:17 -05:00
Michael Davidsaver	17a3324cc8	pvalink: dllimport/export	2018-06-06 15:24:44 -07:00
Michael Davidsaver	da3ecc08b4	pvalink: delay QSRV instanciation Must be delayed until after dbChannelInit(), but still want to allocate pvaGlobal prior to link init. Unfortunately, no initHook between these steps. So split initialization further.	2018-06-05 08:13:42 -07:00
Michael Davidsaver	c126f7a1a2	fixups	2018-05-28 10:17:56 -07:00
Michael Davidsaver	f86d61274a	pvif: used alias'd record name	2018-05-28 09:29:48 -07:00
Michael Davidsaver	9ac4431d6c	update release notes	2018-05-28 09:18:44 -07:00
Michael Davidsaver	365e5061af	Merge remote-tracking branch 'md/master' * md/master: (40 commits) pvalink: test FWD_LINK QSRV: fix put w/ proc w/o values pvalink: add wf test case pvalink: defer opening links until IOC running update iocpvalink to test output links pvalink overhaul debug print controls pvalink misc pvalink minor add iocsh dbpvar() pvalink: hide QSRV channel create errors attempt to disable pvalink for Base <3.16 pvalink: input proc if changed iocpvalink pvalink fix sevr and doc pvalink local: pvalink add retry: option pvalink Put use fieldName fix tpool cleanup testpvalink avoid false positive races pvalink config # of workers ...	2018-05-28 09:08:12 -07:00
Michael Davidsaver	ec05be4e2f	pvalink: test FWD_LINK	2018-05-28 08:10:42 -07:00
Michael Davidsaver	76c6473b6f	QSRV: fix put w/ proc w/o values A put with forced processing, but no values will cause all mappings to process.	2018-05-28 08:10:21 -07:00
Michael Davidsaver	3338d1035d	pvalink: add wf test case	2018-05-28 07:55:10 -07:00
Michael Davidsaver	b3ffc49f71	pvalink: defer opening links until IOC running	2018-05-28 07:49:59 -07:00
Michael Davidsaver	ff67302347	update iocpvalink to test output links	2018-04-25 19:29:11 -07:00
Michael Davidsaver	b18777e8fe	pvalink overhaul debug print controls	2018-04-25 19:26:03 -07:00
Michael Davidsaver	60699c48c2	pvalink misc	2018-04-25 15:09:21 -07:00
Michael Davidsaver	99ca9b958e	pvalink minor	2018-04-25 15:09:01 -07:00
Michael Davidsaver	9839116c56	add iocsh dbpvar()	2018-04-25 14:07:26 -07:00
Michael Davidsaver	40e407de8c	pvalink: hide QSRV channel create errors	2018-04-25 10:42:44 -07:00
Michael Davidsaver	a22f6b0801	attempt to disable pvalink for Base <3.16 Seems to work, but prints messages showing that there is still some problem, probably with a ".dep". Of course these are silent rules, so I have no idea which one! > dbdExpand.pl: No input files for ../O.Common/qsrv.dbd	2018-04-23 18:02:50 -07:00
Michael Davidsaver	e3c0703df1	pvalink: input proc if changed	2018-04-23 08:08:55 -07:00
Michael Davidsaver	75efc13244	iocpvalink	2018-04-21 10:19:38 -07:00
Michael Davidsaver	f3622c0d42	pvalink fix sevr and doc	2018-04-20 16:35:44 -07:00
Michael Davidsaver	3a5ac39627	pvalink local:	2018-04-20 15:57:59 -07:00
Michael Davidsaver	e70aa0897d	pvalink add retry: option allow put to be queued on a disconnected channel	2018-04-19 15:21:02 -07:00
Michael Davidsaver	af761958e5	pvalink Put use fieldName	2018-04-19 15:14:13 -07:00
Michael Davidsaver	0a20804294	fix tpool cleanup	2018-04-19 14:33:42 -07:00
Michael Davidsaver	ff197f89cb	testpvalink avoid false positive races	2018-04-19 14:13:07 -07:00
Michael Davidsaver	c86472666a	pvalink config # of workers	2018-04-18 15:14:27 -07:00
Michael Davidsaver	e2147a95b2	minor	2018-04-18 14:50:10 -07:00
Michael Davidsaver	d07d2dd30c	pvalink put pvRequest	2018-04-18 14:49:43 -07:00
Michael Davidsaver	197e079ad5	pvalink time: key	2018-04-18 14:22:46 -07:00
Michael Davidsaver	27fd0868cf	pvalink more processing	2018-04-18 12:29:39 -07:00
Michael Davidsaver	e165919e84	pvalink: lset behavior	2018-04-18 12:03:53 -07:00
Michael Davidsaver	2934c8a1e4	minor	2018-04-18 10:46:52 -07:00
Michael Davidsaver	c0ac33dc4b	pvif handle NELM=1, NORD=0 Sometimes a DBF "scalar" isn't really a scalar.	2018-04-17 22:36:49 -07:00
Michael Davidsaver	4357d9079e	preliminary docs for pva links	2018-04-17 20:39:55 -07:00
Michael Davidsaver	afe5232653	pvalink pipeline option	2018-04-17 20:38:44 -07:00
Michael Davidsaver	1cc1d1857e	fix DBR2PVD() DBF_ENUM handling must treat DBF_ENUM differently in pvif than in dbf_copy as the storage types used are different.	2018-04-17 19:10:54 -07:00
Michael Davidsaver	6089591abb	bump API and ABI versions for introduction of pv/qsrv.h and pva links Only added new public symbols.	2018-04-17 19:10:54 -07:00
Michael Davidsaver	c55d50c158	fix pvalink shutdown during tests	2018-04-17 19:10:54 -07:00
Michael Davidsaver	520ac5a0b5	introduce pv/qsrv.h workaround EPICS+RTEMS make fault	2018-04-17 19:10:54 -07:00
Michael Davidsaver	9192a872c7	resurrect testpvalink	2018-04-17 19:10:54 -07:00
Michael Davidsaver	79bd35dd3c	re-enable PVA links at runtime	2018-04-17 19:10:54 -07:00
Michael Davidsaver	f0be2f7016	rewrite pvalink using 3.16 link support API	2018-04-17 19:10:54 -07:00
Michael Davidsaver	d5ee917c6d	run testgroupconfig missing for some reason	2018-04-17 19:10:54 -07:00
Michael Davidsaver	cd2c1762b7	pvd <-> dbf Yet more type conversions. This is a complement to pvif.h in that PVIF calls into dbPut() which this code is called by dbPut().	2018-04-17 19:10:54 -07:00
Michael Davidsaver	8b8e421a65	pvif type code mapping cleanup DBR2PVD() remove default: so that missed case is a compile warning. return -1 for invalid codes. PVD2DBR() correct int64 (not used so far)	2018-04-17 19:10:54 -07:00
Michael Davidsaver	f3173682fb	add weak_ptr threaded work queue	2018-04-17 19:10:54 -07:00