Update return types in ofi::Socket

A transer is attempted even if the transport has been interrupted
(with a timeout). When the timeout is reached, transfer methods will
return TransferResult::interrupted (-3).

CMakeLists.txt

@@ -53,6 +53,8 @@ fairmq_build_option(FAST_BUILD              "Fast production build. Not recommen
                                          DEFAULT OFF)
 fairmq_build_option(USE_EXTERNAL_GTEST  "Do not use bundled GTest. Not recommended."
                                          DEFAULT OFF)
+fairmq_build_option(FAIRMQ_DEBUG_MODE   "Compile in debug mode (may decrease performance)."
+                                         DEFAULT OFF)
 ################################################################################
 
 
@@ -429,4 +431,10 @@ message(STATUS "  ${Cyan}INSTALL PREFIX${CR}     ${BGreen}${CMAKE_INSTALL_PREFIX
 message(STATUS "  ")
 message(STATUS "  ${Cyan}RUN STATIC ANALYSIS  ${static_ana_summary}")
 message(STATUS "  ")
+if(FAIRMQ_DEBUG_MODE)
+  message(STATUS "  ${Cyan}DEBUG_MODE${CR}         ${BGreen}${FAIRMQ_DEBUG_MODE}${CR} (disable with ${BMagenta}-DFAIRMQ_DEBUG_MODE=OFF${CR})")
+else()
+  message(STATUS "  ${Cyan}DEBUG_MODE${CR}         ${BRed}${FAIRMQ_DEBUG_MODE}${CR} (enable with ${BMagenta}-DFAIRMQ_DEBUG_MODE=ON${CR})")
+endif()
+message(STATUS "  ")
 ################################################################################

Jenkinsfile

@@ -8,11 +8,15 @@ def jobMatrix(String prefix, List specs, Closure callback) {
   def nodes = [:]
   for (spec in specs) {
     def label = specToLabel(spec)
+    def node_tag = label
+    if (spec.os =~ /macOS/) {
+      node_tag = spec.os
+    }
     def fairsoft = spec.fairsoft
     def os = spec.os
     def compiler = spec.compiler
     nodes["${prefix}/${label}"] = {
-      node(label) {
+      node(node_tag) {
         githubNotify(context: "${prefix}/${label}", description: 'Building ...', status: 'PENDING')
         try {
           deleteDir()
@@ -29,7 +33,7 @@ def jobMatrix(String prefix, List specs, Closure callback) {
               echo "module load compiler/gcc/9.1.0" >> Dart.cfg
             '''
           }
-          if (os =~ /MacOS/) {
+          if (os =~ /[Mm]acOS/) {
             sh "echo \"export EXTRA_FLAGS='-DCMAKE_CXX_COMPILER=clang++'\" >> Dart.cfg"
           } else {
             sh "echo \"export EXTRA_FLAGS='-DCMAKE_CXX_COMPILER=g++'\" >> Dart.cfg"
@@ -71,8 +75,7 @@ pipeline{
         script {
           def build_jobs = jobMatrix('build', [
             [os: 'Debian8',    arch: 'x86_64', compiler: 'gcc9.1.0',        fairsoft: 'fairmq_dev'],
-            [os: 'MacOS10.13', arch: 'x86_64', compiler: 'AppleLLVM10.0.0', fairsoft: 'fairmq_dev'],
+            [os: 'macOS10.15', arch: 'x86_64', compiler: 'AppleLLVM11.0.3', fairsoft: 'fairmq_dev'],
-            [os: 'MacOS10.14', arch: 'x86_64', compiler: 'AppleLLVM10.0.0', fairsoft: 'fairmq_dev'],
           ]) { spec, label ->
             sh './Dart.sh alfa_ci Dart.cfg'
           }

examples/dds/CMakeLists.txt

@@ -29,7 +29,7 @@ target_link_libraries(fairmq-ex-dds-sink PRIVATE ExampleDDSLib)
 add_custom_target(ExampleDDS DEPENDS fairmq-ex-dds-sampler fairmq-ex-dds-processor fairmq-ex-dds-sink)
 
 list(JOIN Boost_LIBRARY_DIRS ":" LIB_DIR)
-set(BIN_DIR ${CMAKE_CURRENT_BINARY_DIR}:${CMAKE_BINARY_DIR}/fairmq/plugins/DDS)
+set(BIN_DIR ${CMAKE_CURRENT_BINARY_DIR}:${CMAKE_BINARY_DIR}/fairmq/sdk)
 set(DATA_DIR ${CMAKE_CURRENT_BINARY_DIR})
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/ex-dds-topology.xml ${CMAKE_CURRENT_BINARY_DIR}/ex-dds-topology.xml @ONLY)
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/ex-dds-topology-infinite.xml ${CMAKE_CURRENT_BINARY_DIR}/ex-dds-topology-infinite.xml @ONLY)

examples/n-m/CMakeLists.txt

@@ -18,7 +18,7 @@ target_link_libraries(fairmq-ex-n-m-receiver PRIVATE FairMQ)
 add_custom_target(ExampleNM DEPENDS fairmq-ex-n-m-synchronizer fairmq-ex-n-m-sender fairmq-ex-n-m-receiver)
 
 list(JOIN Boost_LIBRARY_DIRS ":" LIB_DIR)
-set(BIN_DIR ${CMAKE_CURRENT_BINARY_DIR}:${CMAKE_BINARY_DIR}/fairmq/plugins/DDS)
+set(BIN_DIR ${CMAKE_CURRENT_BINARY_DIR}:${CMAKE_BINARY_DIR}/fairmq/sdk)
 set(DATA_DIR ${CMAKE_CURRENT_BINARY_DIR})
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/ex-n-m-topology.xml                ${CMAKE_CURRENT_BINARY_DIR}/ex-n-m-topology.xml @ONLY)
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/ex-n-m-pair-topology.xml           ${CMAKE_CURRENT_BINARY_DIR}/ex-n-m-pair-topology.xml @ONLY)

examples/qc/CMakeLists.txt

@@ -21,7 +21,7 @@ target_link_libraries(fairmq-ex-qc-sink PRIVATE FairMQ)
 add_custom_target(ExampleQC DEPENDS fairmq-ex-qc-sampler fairmq-ex-qc-dispatcher fairmq-ex-qc-task fairmq-ex-qc-sink)
 
 list(JOIN Boost_LIBRARY_DIRS ":" LIB_DIR)
-set(BIN_DIR ${CMAKE_CURRENT_BINARY_DIR}:${CMAKE_BINARY_DIR}/fairmq/plugins/DDS)
+set(BIN_DIR ${CMAKE_CURRENT_BINARY_DIR}:${CMAKE_BINARY_DIR}/fairmq/sdk)
 set(DATA_DIR ${CMAKE_CURRENT_BINARY_DIR})
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/ex-qc-topology.xml ${CMAKE_CURRENT_BINARY_DIR}/ex-qc-topology.xml @ONLY)
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/fairmq-ex-qc-env.sh ${CMAKE_CURRENT_BINARY_DIR}/fairmq-ex-qc-env.sh @ONLY)

examples/region/Sampler.cxx

@@ -38,6 +38,7 @@ void Sampler::InitTask()
 
     fChannels.at("data").at(0).Transport()->SubscribeToRegionEvents([](FairMQRegionInfo info) {
         LOG(info) << "Region event: " << info.event
+                  << ", managed: " << info.managed
                   << ", id: " << info.id
                   << ", ptr: " << info.ptr
                   << ", size: " << info.size

examples/region/Sink.cxx

@@ -31,6 +31,7 @@ void Sink::InitTask()
     fMaxIterations = fConfig->GetProperty<uint64_t>("max-iterations");
     fChannels.at("data").at(0).Transport()->SubscribeToRegionEvents([](FairMQRegionInfo info) {
         LOG(info) << "Region event: " << info.event
+                  << ", managed: " << info.managed
                   << ", id: " << info.id
                   << ", ptr: " << info.ptr
                   << ", size: " << info.size

fairmq/CMakeLists.txt

@@ -174,12 +174,6 @@ if(BUILD_FAIRMQ)
   )
 
   set(FAIRMQ_PRIVATE_HEADER_FILES
-    devices/FairMQBenchmarkSampler.h
-    devices/FairMQMerger.h
-    devices/FairMQMultiplier.h
-    devices/FairMQProxy.h
-    devices/FairMQSink.h
-    devices/FairMQSplitter.h
     plugins/Builtin.h
     plugins/config/Config.h
     plugins/Control.h
@@ -221,10 +215,6 @@ if(BUILD_FAIRMQ)
     FairMQPoller.cxx
     FairMQSocket.cxx
     FairMQTransportFactory.cxx
-    devices/FairMQMerger.cxx
-    devices/FairMQMultiplier.cxx
-    devices/FairMQProxy.cxx
-    devices/FairMQSplitter.cxx
     Plugin.cxx
     PluginManager.cxx
     PluginServices.cxx
@@ -278,6 +268,9 @@ if(BUILD_FAIRMQ)
   # preprocessor definitions #
   ############################
   target_compile_definitions(${_target} PUBLIC BOOST_ERROR_CODE_HEADER_ONLY)
+  if(FAIRMQ_DEBUG_MODE)
+    target_compile_definitions(${_target} PUBLIC FAIRMQ_DEBUG_MODE)
+  endif()
   if(BUILD_OFI_TRANSPORT)
     target_compile_definitions(${_target} PRIVATE BUILD_OFI_TRANSPORT)
   endif()
@@ -374,6 +367,9 @@ if(BUILD_FAIRMQ)
 
   add_executable(fairmq-shmmonitor shmem/Monitor.cxx shmem/Monitor.h shmem/runMonitor.cxx)
   target_compile_definitions(fairmq-shmmonitor PUBLIC BOOST_ERROR_CODE_HEADER_ONLY)
+  if(FAIRMQ_DEBUG_MODE)
+    target_compile_definitions(fairmq-shmmonitor PUBLIC FAIRMQ_DEBUG_MODE)
+  endif()
   target_link_libraries(fairmq-shmmonitor PUBLIC
     Threads::Threads
     $<$<PLATFORM_ID:Linux>:rt>

fairmq/DeviceRunner.cxx

@@ -8,10 +8,14 @@
 
 #include "DeviceRunner.h"
 
-#include <exception>
+#include <fairmq/tools/Strings.h>
-#include <fairmq/Tools.h>
+#include <fairmq/tools/Version.h>
 #include <fairmq/Version.h>
 
+#include <fairlogger/Logger.h>
+
+#include <exception>
+
 using namespace std;
 using namespace fair::mq;
 

fairmq/DeviceRunner.h

@@ -13,7 +13,6 @@
 #include <fairmq/PluginManager.h>
 #include <fairmq/ProgOptions.h>
 #include <FairMQDevice.h>
-#include <FairMQLogger.h>
 
 #include <functional>
 #include <memory>

fairmq/FairMQChannel.cxx

@@ -7,11 +7,15 @@
  ********************************************************************************/
 
 #include "FairMQChannel.h"
+
 #include <fairmq/tools/Strings.h>
 #include <fairmq/Properties.h>
 
+#include <fairlogger/Logger.h>
+
 #include <boost/algorithm/string.hpp> // join/split
 
+#include <cstddef> // size_t
 #include <regex>
 #include <set>
 #include <random>

fairmq/FairMQChannel.h

@@ -13,7 +13,6 @@
 #include <FairMQUnmanagedRegion.h>
 #include <FairMQSocket.h>
 #include <fairmq/Transports.h>
-#include <FairMQLogger.h>
 #include <FairMQParts.h>
 #include <fairmq/Properties.h>
 #include <FairMQMessage.h>
@@ -24,7 +23,6 @@
 #include <mutex>
 #include <stdexcept>
 #include <utility> // std::move
-#include <cstddef> // size_t
 #include <cstdint> // int64_t
 
 class FairMQChannel
@@ -68,13 +66,13 @@ class FairMQChannel
     FairMQChannel(const FairMQChannel&, const std::string& name);
 
     /// Move constructor
-    FairMQChannel(FairMQChannel&&) = delete;
+    // FairMQChannel(FairMQChannel&&) = delete;
 
     /// Assignment operator
     FairMQChannel& operator=(const FairMQChannel&);
 
     /// Move assignment operator
-    FairMQChannel& operator=(FairMQChannel&&) = delete;
+    // FairMQChannel& operator=(FairMQChannel&&) = delete;
 
     /// Destructor
     virtual ~FairMQChannel()
@@ -252,7 +250,7 @@ class FairMQChannel
     /// Sends a message to the socket queue.
     /// @param msg Constant reference of unique_ptr to a FairMQMessage
     /// @param sndTimeoutInMs send timeout in ms. -1 will wait forever (or until interrupt (e.g. via state change)), 0 will not wait (return immediately if cannot send)
-    /// @return Number of bytes that have been queued. -2 If queueing was not possible or timed out. -1 if there was an error.
+    /// @return Number of bytes that have been queued, TransferResult::timeout if timed out, TransferResult::error if there was an error, TransferResult::interrupted if interrupted (e.g. by requested state change)
     int Send(FairMQMessagePtr& msg, int sndTimeoutInMs = -1)
     {
         CheckSendCompatibility(msg);
@@ -262,7 +260,7 @@ class FairMQChannel
     /// Receives a message from the socket queue.
     /// @param msg Constant reference of unique_ptr to a FairMQMessage
     /// @param rcvTimeoutInMs receive timeout in ms. -1 will wait forever (or until interrupt (e.g. via state change)), 0 will not wait (return immediately if cannot receive)
-    /// @return Number of bytes that have been received. -2 if reading from the queue was not possible or timed out. -1 if there was an error.
+    /// @return Number of bytes that have been received, TransferResult::timeout if timed out, TransferResult::error if there was an error, TransferResult::interrupted if interrupted (e.g. by requested state change)
     int Receive(FairMQMessagePtr& msg, int rcvTimeoutInMs = -1)
     {
         CheckReceiveCompatibility(msg);
@@ -272,7 +270,7 @@ class FairMQChannel
     /// Send a vector of messages
     /// @param msgVec message vector reference
     /// @param sndTimeoutInMs send timeout in ms. -1 will wait forever (or until interrupt (e.g. via state change)), 0 will not wait (return immediately if cannot send)
-    /// @return Number of bytes that have been queued. -2 If queueing was not possible or timed out. -1 if there was an error.
+    /// @return Number of bytes that have been queued, TransferResult::timeout if timed out, TransferResult::error if there was an error, TransferResult::interrupted if interrupted (e.g. by requested state change)
     int64_t Send(std::vector<FairMQMessagePtr>& msgVec, int sndTimeoutInMs = -1)
     {
         CheckSendCompatibility(msgVec);
@@ -282,7 +280,7 @@ class FairMQChannel
     /// Receive a vector of messages
     /// @param msgVec message vector reference
     /// @param rcvTimeoutInMs receive timeout in ms. -1 will wait forever (or until interrupt (e.g. via state change)), 0 will not wait (return immediately if cannot receive)
-    /// @return Number of bytes that have been received. -2 if reading from the queue was not possible or timed out. -1 if there was an error.
+    /// @return Number of bytes that have been received, TransferResult::timeout if timed out, TransferResult::error if there was an error, TransferResult::interrupted if interrupted (e.g. by requested state change)
     int64_t Receive(std::vector<FairMQMessagePtr>& msgVec, int rcvTimeoutInMs = -1)
     {
         CheckReceiveCompatibility(msgVec);
@@ -292,7 +290,7 @@ class FairMQChannel
     /// Send FairMQParts
     /// @param parts FairMQParts reference
     /// @param sndTimeoutInMs send timeout in ms. -1 will wait forever (or until interrupt (e.g. via state change)), 0 will not wait (return immediately if cannot send)
-    /// @return Number of bytes that have been queued. -2 If queueing was not possible or timed out. -1 if there was an error.
+    /// @return Number of bytes that have been queued, TransferResult::timeout if timed out, TransferResult::error if there was an error, TransferResult::interrupted if interrupted (e.g. by requested state change)
     int64_t Send(FairMQParts& parts, int sndTimeoutInMs = -1)
     {
         return Send(parts.fParts, sndTimeoutInMs);
@@ -301,7 +299,7 @@ class FairMQChannel
     /// Receive FairMQParts
     /// @param parts FairMQParts reference
     /// @param rcvTimeoutInMs receive timeout in ms. -1 will wait forever (or until interrupt (e.g. via state change)), 0 will not wait (return immediately if cannot receive)
-    /// @return Number of bytes that have been received. -2 if reading from the queue was not possible or timed out. -1 if there was an error.
+    /// @return Number of bytes that have been received, TransferResult::timeout if timed out, TransferResult::error if there was an error, TransferResult::interrupted if interrupted (e.g. by requested state change)
     int64_t Receive(FairMQParts& parts, int rcvTimeoutInMs = -1)
     {
         return Receive(parts.fParts, rcvTimeoutInMs);

fairmq/FairMQDevice.h

@@ -129,7 +129,7 @@ class FairMQDevice
     /// @param chan channel name
     /// @param i channel index
     /// @param sndTimeoutInMs send timeout in ms, -1 will wait forever (or until interrupt (e.g. via state change)), 0 will not wait (return immediately if cannot send)
-    /// @return Number of bytes that have been queued. -2 If queueing was not possible or timed out. -1 if there was an error.
+    /// @return Number of bytes that have been queued, TransferResult::timeout if timed out, TransferResult::error if there was an error, TransferResult::interrupted if interrupted (e.g. by requested state change)
     int Send(FairMQMessagePtr& msg, const std::string& channel, const int index = 0, int sndTimeoutInMs = -1)
     {
         return GetChannel(channel, index).Send(msg, sndTimeoutInMs);
@@ -140,7 +140,7 @@ class FairMQDevice
     /// @param chan channel name
     /// @param i channel index
     /// @param rcvTimeoutInMs receive timeout in ms, -1 will wait forever (or until interrupt (e.g. via state change)), 0 will not wait (return immediately if cannot receive)
-    /// @return Number of bytes that have been received. -2 if reading from the queue was not possible or timed out. -1 if there was an error.
+    /// @return Number of bytes that have been received, TransferResult::timeout if timed out, TransferResult::error if there was an error, TransferResult::interrupted if interrupted (e.g. by requested state change)
     int Receive(FairMQMessagePtr& msg, const std::string& channel, const int index = 0, int rcvTimeoutInMs = -1)
     {
         return GetChannel(channel, index).Receive(msg, rcvTimeoutInMs);
@@ -151,7 +151,7 @@ class FairMQDevice
     /// @param chan channel name
     /// @param i channel index
     /// @param sndTimeoutInMs send timeout in ms, -1 will wait forever (or until interrupt (e.g. via state change)), 0 will not wait (return immediately if cannot send)
-    /// @return Number of bytes that have been queued. -2 If queueing was not possible or timed out. -1 if there was an error.
+    /// @return Number of bytes that have been queued, TransferResult::timeout if timed out, TransferResult::error if there was an error, TransferResult::interrupted if interrupted (e.g. by requested state change)
     int64_t Send(FairMQParts& parts, const std::string& channel, const int index = 0, int sndTimeoutInMs = -1)
     {
         return GetChannel(channel, index).Send(parts.fParts, sndTimeoutInMs);
@@ -162,7 +162,7 @@ class FairMQDevice
     /// @param chan channel name
     /// @param i channel index
     /// @param rcvTimeoutInMs receive timeout in ms, -1 will wait forever (or until interrupt (e.g. via state change)), 0 will not wait (return immediately if cannot receive)
-    /// @return Number of bytes that have been received. -2 if reading from the queue was not possible or timed out. -1 if there was an error.
+    /// @return Number of bytes that have been received, TransferResult::timeout if timed out, TransferResult::error if there was an error, TransferResult::interrupted if interrupted (e.g. by requested state change)
     int64_t Receive(FairMQParts& parts, const std::string& channel, const int index = 0, int rcvTimeoutInMs = -1)
     {
         return GetChannel(channel, index).Receive(parts.fParts, rcvTimeoutInMs);

fairmq/FairMQSocket.h

@@ -9,14 +9,31 @@
 #ifndef FAIRMQSOCKET_H_
 #define FAIRMQSOCKET_H_
 
+#include "FairMQMessage.h"
+
 #include <memory>
+#include <ostream>
 #include <stdexcept>
 #include <string>
 #include <vector>
 
-#include "FairMQMessage.h"
 class FairMQTransportFactory;
 
+namespace fair
+{
+namespace mq
+{
+
+enum class TransferResult : int
+{
+    error = -1,
+    timeout = -2,
+    interrupted = -3
+};
+
+} // namespace mq
+} // namespace fair
+
 class FairMQSocket
 {
   public:

fairmq/FairMQTransportFactory.cxx

@@ -15,6 +15,8 @@
 #include <FairMQLogger.h>
 #include <fairmq/Tools.h>
 
+#include <fairlogger/Logger.h>
+
 #include <memory>
 #include <string>
 

fairmq/FairMQTransportFactory.h

@@ -9,7 +9,6 @@
 #ifndef FAIRMQTRANSPORTFACTORY_H_
 #define FAIRMQTRANSPORTFACTORY_H_
 
-#include <FairMQLogger.h>
 #include <FairMQMessage.h>
 #include <FairMQPoller.h>
 #include <FairMQSocket.h>

fairmq/FairMQUnmanagedRegion.h

@@ -28,21 +28,24 @@ enum class FairMQRegionEvent : int
 struct FairMQRegionInfo
 {
     FairMQRegionInfo()
-        : id(0)
+        : managed(true)
+        , id(0)
         , ptr(nullptr)
         , size(0)
         , flags(0)
         , event(FairMQRegionEvent::created)
     {}
 
-    FairMQRegionInfo(uint64_t _id, void* _ptr, size_t _size, int64_t _flags, FairMQRegionEvent _event)
+    FairMQRegionInfo(bool _managed, uint64_t _id, void* _ptr, size_t _size, int64_t _flags, FairMQRegionEvent _event)
-        : id(_id)
+        : managed(_managed)
+        , id(_id)
         , ptr(_ptr)
         , size(_size)
         , flags(_flags)
-        , event (_event)
+        , event(_event)
     {}
 
+    bool managed;  // managed/unmanaged
     uint64_t id;   // id of the region
     void* ptr;     // pointer to the start of the region
     size_t size;   // region size
@@ -72,7 +75,7 @@ class FairMQUnmanagedRegion
 
     virtual void* GetData() const = 0;
     virtual size_t GetSize() const = 0;
-    virtual uint64_t GetId() const = 0;
+    virtual uint16_t GetId() const = 0;
     virtual void SetLinger(uint32_t linger) = 0;
     virtual uint32_t GetLinger() const = 0;
 

fairmq/JSONParser.cxx

@@ -12,16 +12,19 @@
  * Created on May 14, 2015, 5:01 PM
  */
 
-#include <fairmq/PropertyOutput.h>
 #include "JSONParser.h"
-#include "FairMQLogger.h"
+#include "FairMQChannel.h"
-#include <fairmq/Tools.h>
+#include <fairmq/PropertyOutput.h>
+#include <fairmq/tools/CppSTL.h>
+#include <fairmq/tools/Strings.h>
+
+#include <fairlogger/Logger.h>
 
 #include <boost/property_tree/json_parser.hpp>
 #include <boost/property_tree/ptree.hpp>
 #include <boost/any.hpp>
 
-#include <ios>
+#include <iomanip>
 
 using namespace std;
 using namespace fair::mq;

fairmq/JSONParser.h

@@ -15,15 +15,11 @@
 #ifndef FAIR_MQ_JSONPARSER_H
 #define FAIR_MQ_JSONPARSER_H
 
-#include <string>
+#include <fairmq/Properties.h>
-#include <vector>
-#include <unordered_map>
-#include <exception>
-
 #include <boost/property_tree/ptree_fwd.hpp>
 
-#include "FairMQChannel.h"
+#include <stdexcept>
-#include <fairmq/Properties.h>
+#include <string>
 
 namespace fair
 {

fairmq/MemoryResources.h

@@ -18,11 +18,12 @@
 #include <fairmq/FairMQMessage.h>
 class FairMQTransportFactory;
 
+#include <boost/container/container_fwd.hpp>
 #include <boost/container/flat_map.hpp>
 #include <boost/container/pmr/memory_resource.hpp>
-#include <boost/container/pmr/monotonic_buffer_resource.hpp>
+
-#include <boost/container/pmr/polymorphic_allocator.hpp>
 #include <cstring>
+#include <stdexcept>
 #include <utility>
 
 namespace fair {

fairmq/PluginServices.h

@@ -17,13 +17,14 @@
 #include <boost/optional.hpp>
 #include <boost/optional/optional_io.hpp>
 
+#include <condition_variable>
 #include <functional>
+#include <map>
+#include <mutex>
+#include <stdexcept>
 #include <string>
 #include <unordered_map>
-#include <mutex>
+#include <vector>
-#include <map>
-#include <condition_variable>
-#include <stdexcept>
 
 namespace fair
 {

fairmq/Properties.h

@@ -16,6 +16,7 @@
 #include <functional>
 #include <map>
 #include <unordered_map>
+#include <stdexcept>
 #include <string>
 #include <typeindex>
 #include <typeinfo>

fairmq/StateMachine.cxx

@@ -7,7 +7,8 @@
  ********************************************************************************/
 
 #include <fairmq/StateMachine.h>
-#include <fairmq/Tools.h>
+
+#include <fairlogger/Logger.h>
 
 // Increase maximum number of boost::msm states (default is 10)
 // This #define has to be before any msm header includes

fairmq/StateMachine.h

@@ -11,8 +11,6 @@
 
 #include <fairmq/States.h>
 
-#include <fairlogger/Logger.h>
-
 #include <string>
 #include <memory>
 #include <functional>

fairmq/SuboptParser.cxx

@@ -12,9 +12,12 @@
 /// @brief  Parser implementation for key-value subopt format
 
 #include <fairmq/SuboptParser.h>
+#include <fairmq/JSONParser.h>
+
+#include <fairlogger/Logger.h>
 
 #include <boost/property_tree/ptree.hpp>
-#include <cstring>
+
 #include <utility> // make_pair
 
 using boost::property_tree::ptree;

fairmq/SuboptParser.h

@@ -14,7 +14,7 @@
 #ifndef FAIR_MQ_SUBOPTPARSER_H
 #define FAIR_MQ_SUBOPTPARSER_H
 
-#include <fairmq/JSONParser.h>
+#include <fairmq/Properties.h>
 
 #include <vector>
 #include <string>

fairmq/devices/FairMQMerger.cxx

@@ -1,122 +0,0 @@
-/********************************************************************************
- *    Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
- *                                                                              *
- *              This software is distributed under the terms of the             *
- *              GNU Lesser General Public Licence (LGPL) version 3,             *
- *                  copied verbatim in the file "LICENSE"                       *
- ********************************************************************************/
-/**
- * FairMQMerger.cxx
- *
- * @since 2012-12-06
- * @author D. Klein, A. Rybalchenko
- */
-
-#include "FairMQMerger.h"
-#include "../FairMQLogger.h"
-#include "../FairMQPoller.h"
-
-using namespace std;
-
-FairMQMerger::FairMQMerger()
-    : fMultipart(true)
-    , fInChannelName("data-in")
-    , fOutChannelName("data-out")
-{
-}
-
-void FairMQMerger::RegisterChannelEndpoints()
-{
-    RegisterChannelEndpoint(fInChannelName, 1, 10000);
-    RegisterChannelEndpoint(fOutChannelName, 1, 1);
-
-    PrintRegisteredChannels();
-}
-
-FairMQMerger::~FairMQMerger()
-{
-}
-
-void FairMQMerger::InitTask()
-{
-    fMultipart = fConfig->GetProperty<bool>("multipart");
-    fInChannelName = fConfig->GetProperty<string>("in-channel");
-    fOutChannelName = fConfig->GetProperty<string>("out-channel");
-}
-
-void FairMQMerger::Run()
-{
-    int numInputs = fChannels.at(fInChannelName).size();
-
-    vector<FairMQChannel*> chans;
-
-    for (auto& chan : fChannels.at(fInChannelName))
-    {
-        chans.push_back(&chan);
-    }
-
-    FairMQPollerPtr poller(NewPoller(chans));
-
-    if (fMultipart)
-    {
-        while (!NewStatePending())
-        {
-            poller->Poll(100);
-
-            // Loop over the data input channels.
-            for (int i = 0; i < numInputs; ++i)
-            {
-                // Check if the channel has data ready to be received.
-                if (poller->CheckInput(i))
-                {
-                    FairMQParts payload;
-
-                    if (Receive(payload, fInChannelName, i) >= 0)
-                    {
-                        if (Send(payload, fOutChannelName) < 0)
-                        {
-                            LOG(debug) << "Transfer interrupted";
-                            break;
-                        }
-                    }
-                    else
-                    {
-                        LOG(debug) << "Transfer interrupted";
-                        break;
-                    }
-                }
-            }
-        }
-    }
-    else
-    {
-        while (!NewStatePending())
-        {
-            poller->Poll(100);
-
-            // Loop over the data input channels.
-            for (int i = 0; i < numInputs; ++i)
-            {
-                // Check if the channel has data ready to be received.
-                if (poller->CheckInput(i))
-                {
-                    FairMQMessagePtr payload(fTransportFactory->CreateMessage());
-
-                    if (Receive(payload, fInChannelName, i) >= 0)
-                    {
-                        if (Send(payload, fOutChannelName) < 0)
-                        {
-                            LOG(debug) << "Transfer interrupted";
-                            break;
-                        }
-                    }
-                    else
-                    {
-                        LOG(debug) << "Transfer interrupted";
-                        break;
-                    }
-                }
-            }
-        }
-    }
-}

fairmq/devices/FairMQMerger.h

@@ -16,23 +16,100 @@
 #define FAIRMQMERGER_H_
 
 #include "FairMQDevice.h"
+#include "../FairMQPoller.h"
+#include "../FairMQLogger.h"
 
 #include <string>
+#include <vector>
 
 class FairMQMerger : public FairMQDevice
 {
   public:
-    FairMQMerger();
+    FairMQMerger()
-    virtual ~FairMQMerger();
+        : fMultipart(true)
+        , fInChannelName("data-in")
+        , fOutChannelName("data-out")
+    {}
+    ~FairMQMerger() {}
 
   protected:
     bool fMultipart;
     std::string fInChannelName;
     std::string fOutChannelName;
 
-    virtual void RegisterChannelEndpoints() override;
+    void InitTask() override
-    virtual void Run() override;
+    {
-    virtual void InitTask() override;
+        fMultipart = fConfig->GetProperty<bool>("multipart");
+        fInChannelName = fConfig->GetProperty<std::string>("in-channel");
+        fOutChannelName = fConfig->GetProperty<std::string>("out-channel");
+    }
+
+    void RegisterChannelEndpoints() override
+    {
+        RegisterChannelEndpoint(fInChannelName, 1, 10000);
+        RegisterChannelEndpoint(fOutChannelName, 1, 1);
+
+        PrintRegisteredChannels();
+    }
+
+    void Run() override
+    {
+        int numInputs = fChannels.at(fInChannelName).size();
+
+        std::vector<FairMQChannel*> chans;
+
+        for (auto& chan : fChannels.at(fInChannelName)) {
+            chans.push_back(&chan);
+        }
+
+        FairMQPollerPtr poller(NewPoller(chans));
+
+        if (fMultipart) {
+            while (!NewStatePending()) {
+                poller->Poll(100);
+
+                // Loop over the data input channels.
+                for (int i = 0; i < numInputs; ++i) {
+                    // Check if the channel has data ready to be received.
+                    if (poller->CheckInput(i)) {
+                        FairMQParts payload;
+
+                        if (Receive(payload, fInChannelName, i) >= 0) {
+                            if (Send(payload, fOutChannelName) < 0) {
+                                LOG(debug) << "Transfer interrupted";
+                                break;
+                            }
+                        } else {
+                            LOG(debug) << "Transfer interrupted";
+                            break;
+                        }
+                    }
+                }
+            }
+        } else {
+            while (!NewStatePending()) {
+                poller->Poll(100);
+
+                // Loop over the data input channels.
+                for (int i = 0; i < numInputs; ++i) {
+                    // Check if the channel has data ready to be received.
+                    if (poller->CheckInput(i)) {
+                        FairMQMessagePtr payload(fTransportFactory->CreateMessage());
+
+                        if (Receive(payload, fInChannelName, i) >= 0) {
+                            if (Send(payload, fOutChannelName) < 0) {
+                                LOG(debug) << "Transfer interrupted";
+                                break;
+                            }
+                        } else {
+                            LOG(debug) << "Transfer interrupted";
+                            break;
+                        }
+                    }
+                }
+            }
+        }
+    }
 };
 
 #endif /* FAIRMQMERGER_H_ */

fairmq/devices/FairMQMultiplier.cxx

@@ -1,110 +0,0 @@
-/********************************************************************************
- *    Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
- *                                                                              *
- *              This software is distributed under the terms of the             *
- *              GNU Lesser General Public Licence (LGPL) version 3,             *
- *                  copied verbatim in the file "LICENSE"                       *
- ********************************************************************************/
-
-#include "FairMQMultiplier.h"
-
-#include "../FairMQLogger.h"
-
-using namespace std;
-
-FairMQMultiplier::FairMQMultiplier()
-    : fMultipart(true)
-    , fNumOutputs(0)
-    , fInChannelName()
-    , fOutChannelNames()
-{
-}
-
-FairMQMultiplier::~FairMQMultiplier()
-{
-}
-
-void FairMQMultiplier::InitTask()
-{
-    fMultipart = fConfig->GetProperty<bool>("multipart");
-    fInChannelName = fConfig->GetProperty<string>("in-channel");
-    fOutChannelNames = fConfig->GetProperty<vector<string>>("out-channel");
-    fNumOutputs = fChannels.at(fOutChannelNames.at(0)).size();
-
-    if (fMultipart)
-    {
-        OnData(fInChannelName, &FairMQMultiplier::HandleMultipartData);
-    }
-    else
-    {
-        OnData(fInChannelName, &FairMQMultiplier::HandleSingleData);
-    }
-}
-
-bool FairMQMultiplier::HandleSingleData(std::unique_ptr<FairMQMessage>& payload, int /*index*/)
-{
-    for (unsigned int i = 0; i < fOutChannelNames.size() - 1; ++i) // all except last channel
-    {
-        for (unsigned int j = 0; j < fChannels.at(fOutChannelNames.at(i)).size(); ++j) // all subChannels in a channel
-        {
-            FairMQMessagePtr msgCopy(fTransportFactory->CreateMessage());
-            msgCopy->Copy(*payload);
-
-            Send(msgCopy, fOutChannelNames.at(i), j);
-        }
-    }
-
-    unsigned int lastChannelSize = fChannels.at(fOutChannelNames.back()).size();
-
-    for (unsigned int i = 0; i < lastChannelSize - 1; ++i) // iterate over all except last subChannels of the last channel
-    {
-        FairMQMessagePtr msgCopy(fTransportFactory->CreateMessage());
-        msgCopy->Copy(*payload);
-
-        Send(msgCopy, fOutChannelNames.back(), i);
-    }
-
-    Send(payload, fOutChannelNames.back(), lastChannelSize - 1); // send final message to last subChannel of last channel
-
-    return true;
-}
-
-bool FairMQMultiplier::HandleMultipartData(FairMQParts& payload, int /*index*/)
-{
-    for (unsigned int i = 0; i < fOutChannelNames.size() - 1; ++i) // all except last channel
-    {
-        for (unsigned int j = 0; j < fChannels.at(fOutChannelNames.at(i)).size(); ++j) // all subChannels in a channel
-        {
-            FairMQParts parts;
-
-            for (int k = 0; k < payload.Size(); ++k)
-            {
-                FairMQMessagePtr msgCopy(fTransportFactory->CreateMessage());
-                msgCopy->Copy(payload.AtRef(k));
-                parts.AddPart(std::move(msgCopy));
-            }
-
-            Send(parts, fOutChannelNames.at(i), j);
-        }
-    }
-
-    unsigned int lastChannelSize = fChannels.at(fOutChannelNames.back()).size();
-
-    for (unsigned int i = 0; i < lastChannelSize - 1; ++i) // iterate over all except last subChannels of the last channel
-    {
-        FairMQParts parts;
-
-        for (int k = 0; k < payload.Size(); ++k)
-        {
-            FairMQMessagePtr msgCopy(fTransportFactory->CreateMessage());
-            msgCopy->Copy(payload.AtRef(k));
-            parts.AddPart(std::move(msgCopy));
-        }
-
-        Send(parts, fOutChannelNames.back(), i);
-    }
-
-    Send(payload, fOutChannelNames.back(), lastChannelSize - 1); // send final message to last subChannel of last channel
-
-    return true;
-}

fairmq/devices/FairMQMultiplier.h

@@ -12,12 +12,18 @@
 #include "FairMQDevice.h"
 
 #include <string>
+#include <vector>
 
 class FairMQMultiplier : public FairMQDevice
 {
   public:
-    FairMQMultiplier();
+    FairMQMultiplier()
-    virtual ~FairMQMultiplier();
+        : fMultipart(true)
+        , fNumOutputs(0)
+        , fInChannelName()
+        , fOutChannelNames()
+    {}
+    ~FairMQMultiplier() {}
 
   protected:
     bool fMultipart;
@@ -25,10 +31,80 @@ class FairMQMultiplier : public FairMQDevice
     std::string fInChannelName;
     std::vector<std::string> fOutChannelNames;
 
-    virtual void InitTask();
+    void InitTask() override
+    {
+        fMultipart = fConfig->GetProperty<bool>("multipart");
+        fInChannelName = fConfig->GetProperty<std::string>("in-channel");
+        fOutChannelNames = fConfig->GetProperty<std::vector<std::string>>("out-channel");
+        fNumOutputs = fChannels.at(fOutChannelNames.at(0)).size();
 
-    bool HandleSingleData(std::unique_ptr<FairMQMessage>&, int);
+        if (fMultipart) {
-    bool HandleMultipartData(FairMQParts&, int);
+            OnData(fInChannelName, &FairMQMultiplier::HandleMultipartData);
+        } else {
+            OnData(fInChannelName, &FairMQMultiplier::HandleSingleData);
+        }
+    }
+
+
+    bool HandleSingleData(std::unique_ptr<FairMQMessage>& payload, int)
+    {
+        for (unsigned int i = 0; i < fOutChannelNames.size() - 1; ++i) { // all except last channel
+            for (unsigned int j = 0; j < fChannels.at(fOutChannelNames.at(i)).size(); ++j) { // all subChannels in a channel
+                FairMQMessagePtr msgCopy(fTransportFactory->CreateMessage());
+                msgCopy->Copy(*payload);
+
+                Send(msgCopy, fOutChannelNames.at(i), j);
+            }
+        }
+
+        unsigned int lastChannelSize = fChannels.at(fOutChannelNames.back()).size();
+
+        for (unsigned int i = 0; i < lastChannelSize - 1; ++i) { // iterate over all except last subChannels of the last channel
+            FairMQMessagePtr msgCopy(fTransportFactory->CreateMessage());
+            msgCopy->Copy(*payload);
+
+            Send(msgCopy, fOutChannelNames.back(), i);
+        }
+
+        Send(payload, fOutChannelNames.back(), lastChannelSize - 1); // send final message to last subChannel of last channel
+
+        return true;
+    }
+
+    bool HandleMultipartData(FairMQParts& payload, int)
+    {
+        for (unsigned int i = 0; i < fOutChannelNames.size() - 1; ++i) { // all except last channel
+            for (unsigned int j = 0; j < fChannels.at(fOutChannelNames.at(i)).size(); ++j) { // all subChannels in a channel
+                FairMQParts parts;
+
+                for (int k = 0; k < payload.Size(); ++k) {
+                    FairMQMessagePtr msgCopy(fTransportFactory->CreateMessage());
+                    msgCopy->Copy(payload.AtRef(k));
+                    parts.AddPart(std::move(msgCopy));
+                }
+
+                Send(parts, fOutChannelNames.at(i), j);
+            }
+        }
+
+        unsigned int lastChannelSize = fChannels.at(fOutChannelNames.back()).size();
+
+        for (unsigned int i = 0; i < lastChannelSize - 1; ++i) { // iterate over all except last subChannels of the last channel
+            FairMQParts parts;
+
+            for (int k = 0; k < payload.Size(); ++k) {
+                FairMQMessagePtr msgCopy(fTransportFactory->CreateMessage());
+                msgCopy->Copy(payload.AtRef(k));
+                parts.AddPart(std::move(msgCopy));
+            }
+
+            Send(parts, fOutChannelNames.back(), i);
+        }
+
+        Send(payload, fOutChannelNames.back(), lastChannelSize - 1); // send final message to last subChannel of last channel
+
+        return true;
+    }
 };
 
 #endif /* FAIRMQMULTIPLIER_H_ */

fairmq/devices/FairMQProxy.cxx

@@ -1,81 +0,0 @@
-/********************************************************************************
- *    Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
- *                                                                              *
- *              This software is distributed under the terms of the             *
- *              GNU Lesser General Public Licence (LGPL) version 3,             *
- *                  copied verbatim in the file "LICENSE"                       *
- ********************************************************************************/
-/**
- * FairMQProxy.cxx
- *
- * @since 2013-10-02
- * @author A. Rybalchenko
- */
-
-#include "FairMQProxy.h"
-
-#include "../FairMQLogger.h"
-
-using namespace std;
-
-FairMQProxy::FairMQProxy()
-    : fMultipart(true)
-    , fInChannelName()
-    , fOutChannelName()
-{
-}
-
-FairMQProxy::~FairMQProxy()
-{
-}
-
-void FairMQProxy::InitTask()
-{
-    fMultipart = fConfig->GetProperty<bool>("multipart");
-    fInChannelName = fConfig->GetProperty<string>("in-channel");
-    fOutChannelName = fConfig->GetProperty<string>("out-channel");
-}
-
-void FairMQProxy::Run()
-{
-    if (fMultipart)
-    {
-        while (!NewStatePending())
-        {
-            FairMQParts payload;
-            if (Receive(payload, fInChannelName) >= 0)
-            {
-                if (Send(payload, fOutChannelName) < 0)
-                {
-                    LOG(debug) << "Transfer interrupted";
-                    break;
-                }
-            }
-            else
-            {
-                LOG(debug) << "Transfer interrupted";
-                break;
-            }
-        }
-    }
-    else
-    {
-        while (!NewStatePending())
-        {
-            unique_ptr<FairMQMessage> payload(fTransportFactory->CreateMessage());
-            if (Receive(payload, fInChannelName) >= 0)
-            {
-                if (Send(payload, fOutChannelName) < 0)
-                {
-                    LOG(debug) << "Transfer interrupted";
-                    break;
-                }
-            }
-            else
-            {
-                LOG(debug) << "Transfer interrupted";
-                break;
-            }
-        }
-    }
-}

fairmq/devices/FairMQProxy.h

@@ -22,16 +22,55 @@
 class FairMQProxy : public FairMQDevice
 {
   public:
-    FairMQProxy();
+    FairMQProxy()
-    virtual ~FairMQProxy();
+        : fMultipart(true)
+        , fInChannelName()
+        , fOutChannelName()
+    {}
+    ~FairMQProxy() {}
 
   protected:
     bool fMultipart;
     std::string fInChannelName;
     std::string fOutChannelName;
 
-    virtual void Run();
+    void InitTask() override
-    virtual void InitTask();
+    {
+        fMultipart = fConfig->GetProperty<bool>("multipart");
+        fInChannelName = fConfig->GetProperty<std::string>("in-channel");
+        fOutChannelName = fConfig->GetProperty<std::string>("out-channel");
+    }
+
+    void Run() override
+    {
+        if (fMultipart) {
+            while (!NewStatePending()) {
+                FairMQParts payload;
+                if (Receive(payload, fInChannelName) >= 0) {
+                    if (Send(payload, fOutChannelName) < 0) {
+                        LOG(debug) << "Transfer interrupted";
+                        break;
+                    }
+                } else {
+                    LOG(debug) << "Transfer interrupted";
+                    break;
+                }
+            }
+        } else {
+            while (!NewStatePending()) {
+                FairMQMessagePtr payload(fTransportFactory->CreateMessage());
+                if (Receive(payload, fInChannelName) >= 0) {
+                    if (Send(payload, fOutChannelName) < 0) {
+                        LOG(debug) << "Transfer interrupted";
+                        break;
+                    }
+                } else {
+                    LOG(debug) << "Transfer interrupted";
+                    break;
+                }
+            }
+        }
+    }
 };
 
 #endif /* FAIRMQPROXY_H_ */

fairmq/devices/FairMQSink.h

@@ -32,7 +32,7 @@ class FairMQSink : public FairMQDevice   //, public OutputPolicy
         , fInChannelName()
     {}
 
-    virtual ~FairMQSink() {}
+    ~FairMQSink() {}
 
   protected:
     bool fMultipart;
@@ -40,14 +40,14 @@ class FairMQSink : public FairMQDevice   //, public OutputPolicy
     uint64_t fNumIterations;
     std::string fInChannelName;
 
-    virtual void InitTask()
+    void InitTask() override
     {
         fMultipart = fConfig->GetProperty<bool>("multipart");
         fMaxIterations = fConfig->GetProperty<uint64_t>("max-iterations");
         fInChannelName = fConfig->GetProperty<std::string>("in-channel");
     }
 
-    virtual void Run()
+    void Run() override
     {
         // store the channel reference to avoid traversing the map on every loop iteration
         FairMQChannel& dataInChannel = fChannels.at(fInChannelName).at(0);

fairmq/devices/FairMQSplitter.cxx

@@ -1,74 +0,0 @@
-/********************************************************************************
- *    Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
- *                                                                              *
- *              This software is distributed under the terms of the             *
- *              GNU Lesser General Public Licence (LGPL) version 3,             *
- *                  copied verbatim in the file "LICENSE"                       *
- ********************************************************************************/
-/**
- * FairMQSplitter.cxx
- *
- * @since 2012-12-06
- * @author D. Klein, A. Rybalchenko
- */
-
-#include "FairMQSplitter.h"
-
-#include "../FairMQLogger.h"
-
-using namespace std;
-
-FairMQSplitter::FairMQSplitter()
-    : fMultipart(true)
-    , fNumOutputs(0)
-    , fDirection(0)
-    , fInChannelName()
-    , fOutChannelName()
-{
-}
-
-FairMQSplitter::~FairMQSplitter()
-{
-}
-
-void FairMQSplitter::InitTask()
-{
-    fMultipart = fConfig->GetProperty<bool>("multipart");
-    fInChannelName = fConfig->GetProperty<string>("in-channel");
-    fOutChannelName = fConfig->GetProperty<string>("out-channel");
-    fNumOutputs = fChannels.at(fOutChannelName).size();
-    fDirection = 0;
-
-    if (fMultipart)
-    {
-        OnData(fInChannelName, &FairMQSplitter::HandleMultipartData);
-    }
-    else
-    {
-        OnData(fInChannelName, &FairMQSplitter::HandleSingleData);
-    }
-}
-
-bool FairMQSplitter::HandleSingleData(FairMQMessagePtr& payload, int /*index*/)
-{
-    Send(payload, fOutChannelName, fDirection);
-
-    if (++fDirection >= fNumOutputs)
-    {
-        fDirection = 0;
-    }
-
-    return true;
-}
-
-bool FairMQSplitter::HandleMultipartData(FairMQParts& payload, int /*index*/)
-{
-    Send(payload, fOutChannelName, fDirection);
-
-    if (++fDirection >= fNumOutputs)
-    {
-        fDirection = 0;
-    }
-
-    return true;
-}

fairmq/devices/FairMQSplitter.h

@@ -22,8 +22,14 @@
 class FairMQSplitter : public FairMQDevice
 {
   public:
-    FairMQSplitter();
+    FairMQSplitter()
-    virtual ~FairMQSplitter();
+        : fMultipart(true)
+        , fNumOutputs(0)
+        , fDirection(0)
+        , fInChannelName()
+        , fOutChannelName()
+    {}
+    ~FairMQSplitter() {}
 
   protected:
     bool fMultipart;
@@ -32,10 +38,32 @@ class FairMQSplitter : public FairMQDevice
     std::string fInChannelName;
     std::string fOutChannelName;
 
-    virtual void InitTask();
+    void InitTask() override
+    {
+        fMultipart = fConfig->GetProperty<bool>("multipart");
+        fInChannelName = fConfig->GetProperty<std::string>("in-channel");
+        fOutChannelName = fConfig->GetProperty<std::string>("out-channel");
+        fNumOutputs = fChannels.at(fOutChannelName).size();
+        fDirection = 0;
 
-    bool HandleSingleData(std::unique_ptr<FairMQMessage>&, int);
+        if (fMultipart) {
-    bool HandleMultipartData(FairMQParts&, int);
+            OnData(fInChannelName, &FairMQSplitter::HandleData<FairMQParts>);
+        } else {
+            OnData(fInChannelName, &FairMQSplitter::HandleData<FairMQMessagePtr>);
+        }
+    }
+
+    template<typename T>
+    bool HandleData(T& payload, int)
+    {
+        Send(payload, fOutChannelName, fDirection);
+
+        if (++fDirection >= fNumOutputs) {
+            fDirection = 0;
+        }
+
+        return true;
+    }
 };
 
 #endif /* FAIRMQSPLITTER_H_ */

fairmq/ofi/Socket.cxx

@@ -284,7 +284,7 @@ try {
     return size;
 } catch (const std::exception& e) {
     LOG(error) << e.what();
-    return -1;
+    return static_cast<int64_t>(TransferResult::error);
 }
 
 auto Socket::SendQueueReader() -> void
@@ -431,7 +431,7 @@ try {
     return size;
 } catch (const std::exception& e) {
     LOG(error) << e.what();
-    return -1;
+    return static_cast<int>(TransferResult::error);
 }
 
 auto Socket::Receive(std::vector<MessagePtr>& msgVec, const int /*timeout*/) -> int64_t
@@ -456,7 +456,7 @@ try {
     return size;
 } catch (const std::exception& e) {
     LOG(error) << e.what();
-    return -1;
+    return static_cast<int64_t>(TransferResult::error);
 }
 
 auto Socket::RecvControlQueueReader() -> void

fairmq/plugins/DDS/CMakeLists.txt

@@ -17,13 +17,7 @@ set_target_properties(${plugin} PROPERTIES
   LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/fairmq
 )
 
-set(exe fairmq-dds-command-ui)
+install(TARGETS ${plugin}
-add_executable(${exe} ${CMAKE_CURRENT_SOURCE_DIR}/runDDSCommandUI.cxx)
-target_link_libraries(${exe} FairMQ Commands SDK StateMachine)
-target_include_directories(${exe} PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
-
-install(TARGETS ${plugin} ${exe}
   EXPORT ${PROJECT_EXPORT_SET}
   LIBRARY DESTINATION ${PROJECT_INSTALL_LIBDIR}
-  RUNTIME DESTINATION ${PROJECT_INSTALL_BINDIR}
 )

fairmq/plugins/DDS/DDS.cxx

@@ -344,10 +344,10 @@ auto DDS::HandleCmd(const string& id, sdk::cmd::Cmd& cmd, const string& cond, ui
         case Type::change_state: {
             Transition transition = static_cast<ChangeState&>(cmd).GetTransition();
             if (ChangeDeviceState(transition)) {
-                Cmds outCmds(make<TransitionStatus>(id, fDDSTaskId, Result::Ok, transition));
+                Cmds outCmds(make<TransitionStatus>(id, fDDSTaskId, Result::Ok, transition, GetCurrentDeviceState()));
                 fDDS.Send(outCmds.Serialize(), to_string(senderId));
             } else {
-                Cmds outCmds(make<TransitionStatus>(id, fDDSTaskId, Result::Failure, transition));
+                Cmds outCmds(make<TransitionStatus>(id, fDDSTaskId, Result::Failure, transition, GetCurrentDeviceState()));
                 fDDS.Send(outCmds.Serialize(), to_string(senderId));
             }
             {

fairmq/plugins/PMIx/PMIxPlugin.cxx

@@ -148,12 +148,12 @@ auto PMIxPlugin::SubscribeForCommands() -> void
                     Transition transition = static_cast<ChangeState&>(*cmd).GetTransition();
                     if (ChangeDeviceState(transition)) {
                         fCommands.Send(
-                            Cmds(make<TransitionStatus>(fDeviceId, 0, Result::Ok, transition))
+                            Cmds(make<TransitionStatus>(fDeviceId, 0, Result::Ok, transition, GetCurrentDeviceState()))
                                 .Serialize(Format::JSON),
                             {sender});
                     } else {
                         fCommands.Send(
-                            Cmds(make<TransitionStatus>(fDeviceId, 0, Result::Failure, transition))
+                            Cmds(make<TransitionStatus>(fDeviceId, 0, Result::Failure, transition, GetCurrentDeviceState()))
                                 .Serialize(Format::JSON),
                             {sender});
                     }

fairmq/plugins/config/Config.cxx

@@ -69,6 +69,8 @@ Plugin::ProgOptions ConfigPluginProgramOptions()
         ("max-run-time",        po::value<uint64_t      >()->default_value(0),                 "Maximum runtime for the Running state handler, after which state will change to Ready (in seconds, 0 for no limit).")
         ("print-channels",      po::value<bool          >()->implicit_value(true),             "Print registered channel endpoints in a machine-readable format (<channel name>:<min num subchannels>:<max num subchannels>)")
         ("shm-segment-size",    po::value<size_t        >()->default_value(2ULL << 30),        "Shared memory: size of the shared memory segment (in bytes).")
+        ("shm-allocation",      po::value<string        >()->default_value("rbtree_best_fit"), "Shared memory allocation algorithm: rbtree_best_fit/simple_seq_fit.")
+        ("shm-segment-id",      po::value<uint16_t      >()->default_value(0),                 "EXPERIMENTAL: Shared memory segment id for message creation.")
         ("shm-mlock-segment",   po::value<bool          >()->default_value(false),             "Shared memory: mlock the shared memory segment after initialization.")
         ("shm-zero-segment",    po::value<bool          >()->default_value(false),             "Shared memory: zero the shared memory segment memory after initialization.")
         ("shm-throw-bad-alloc", po::value<bool          >()->default_value(true),              "Throw a fair::mq::MessageBadAlloc if cannot allocate a message (retry if false).")

fairmq/sdk/CMakeLists.txt

@@ -84,10 +84,19 @@ target_link_libraries(fairmq
   Boost::program_options
 )
 
+add_executable(fairmq-dds-command-ui ${CMAKE_CURRENT_SOURCE_DIR}/runDDSCommandUI.cxx)
+target_link_libraries(fairmq-dds-command-ui
+  FairMQ
+  Commands
+  SDK
+  StateMachine
+)
+
 install(
   TARGETS
   SDK
   fairmq
+  fairmq-dds-command-ui
 
   EXPORT ${PROJECT_EXPORT_SET}
   RUNTIME DESTINATION ${PROJECT_INSTALL_BINDIR}

fairmq/sdk/Topology.h

@@ -421,13 +421,16 @@ class BasicTopology : public AsioBase<Executor, Allocator>
     auto HandleCmd(cmd::TransitionStatus const& cmd) -> void
     {
         if (cmd.GetResult() != cmd::Result::Ok) {
-            FAIR_LOG(error) << cmd.GetTransition() << " transition failed for " << cmd.GetDeviceId();
             DDSTask::Id taskId(cmd.GetTaskId());
             std::lock_guard<std::mutex> lk(fMtx);
             for (auto& op : fChangeStateOps) {
-                if (!op.second.IsCompleted() && op.second.ContainsTask(taskId) &&
+                if (!op.second.IsCompleted() && op.second.ContainsTask(taskId)) {
-                    fStateData.at(fStateIndex.at(taskId)).state != op.second.GetTargetState()) {
+                    if (fStateData.at(fStateIndex.at(taskId)).state != op.second.GetTargetState()) {
+                        FAIR_LOG(error) << cmd.GetTransition() << " transition failed for " << cmd.GetDeviceId() << ", device is in " << cmd.GetCurrentState() << " state.";
                         op.second.Complete(MakeErrorCode(ErrorCode::DeviceChangeStateFailed));
+                    } else {
+                        FAIR_LOG(debug) << cmd.GetTransition() << " transition failed for " << cmd.GetDeviceId() << ", device is already in " << cmd.GetCurrentState() << " state.";
+                    }
                 }
             }
         }
@@ -461,7 +464,7 @@ class BasicTopology : public AsioBase<Executor, Allocator>
         }
     }
 
-    using Duration = std::chrono::milliseconds;
+    using Duration = std::chrono::microseconds;
     using ChangeStateCompletionSignature = void(std::error_code, TopologyState);
 
   private:

fairmq/sdk/commands/Commands.cxx

@@ -290,6 +290,7 @@ string Cmds::Serialize(const Format type) const
                 cmdBuilder->add_task_id(_cmd.GetTaskId());
                 cmdBuilder->add_result(GetFBResult(_cmd.GetResult()));
                 cmdBuilder->add_transition(GetFBTransition(_cmd.GetTransition()));
+                cmdBuilder->add_current_state(GetFBState(_cmd.GetCurrentState()));
             }
             break;
             case Type::config: {
@@ -445,7 +446,7 @@ void Cmds::Deserialize(const string& str, const Format type)
                 fCmds.emplace_back(make<CurrentState>(cmdPtr.device_id()->str(), GetMQState(cmdPtr.current_state())));
             break;
             case FBCmd_transition_status:
-                fCmds.emplace_back(make<TransitionStatus>(cmdPtr.device_id()->str(), cmdPtr.task_id(), GetResult(cmdPtr.result()), GetMQTransition(cmdPtr.transition())));
+                fCmds.emplace_back(make<TransitionStatus>(cmdPtr.device_id()->str(), cmdPtr.task_id(), GetResult(cmdPtr.result()), GetMQTransition(cmdPtr.transition()), GetMQState(cmdPtr.current_state())));
             break;
             case FBCmd_config:
                 fCmds.emplace_back(make<Config>(cmdPtr.device_id()->str(), cmdPtr.config_string()->str()));

fairmq/sdk/commands/Commands.h

@@ -50,7 +50,7 @@ enum class Type : int
     subscription_heartbeat,        // args: { interval }
 
     current_state,                 // args: { device_id, current_state }
-    transition_status,             // args: { device_id, task_id, Result, transition }
+    transition_status,             // args: { device_id, task_id, Result, transition, current_state }
     config,                        // args: { device_id, config_string }
     state_change_subscription,     // args: { device_id, task_id, Result }
     state_change_unsubscription,   // args: { device_id, task_id, Result }
@@ -188,12 +188,13 @@ struct CurrentState : Cmd
 
 struct TransitionStatus : Cmd
 {
-    explicit TransitionStatus(const std::string& deviceId, const uint64_t taskId, const Result result, const Transition transition)
+    explicit TransitionStatus(const std::string& deviceId, const uint64_t taskId, const Result result, const Transition transition, State currentState)
         : Cmd(Type::transition_status)
         , fDeviceId(deviceId)
         , fTaskId(taskId)
         , fResult(result)
         , fTransition(transition)
+        , fCurrentState(currentState)
     {}
 
     std::string GetDeviceId() const { return fDeviceId; }
@@ -204,12 +205,15 @@ struct TransitionStatus : Cmd
     void SetResult(const Result result) { fResult = result; }
     Transition GetTransition() const { return fTransition; }
     void SetTransition(const Transition transition) { fTransition = transition; }
+    fair::mq::State GetCurrentState() const { return fCurrentState; }
+    void SetCurrentState(fair::mq::State state) { fCurrentState = state; }
 
   private:
     std::string fDeviceId;
     uint64_t fTaskId;
     Result fResult;
     Transition fTransition;
+    fair::mq::State fCurrentState;
 };
 
 struct Config : Cmd

fairmq/sdk/commands/CommandsFormat.fbs

@@ -56,7 +56,7 @@ enum FBCmd:byte {
     subscription_heartbeat,        // args: { interval }
 
     current_state,                 // args: { device_id, current_state }
-    transition_status,             // args: { device_id, task_id, Result, transition }
+    transition_status,             // args: { device_id, task_id, Result, transition, current_state }
     config,                        // args: { device_id, config_string }
     state_change_subscription,     // args: { device_id, task_id, Result }
     state_change_unsubscription,   // args: { device_id, task_id, Result }

fairmq/sdk/runDDSCommandUI.cxx

@@ -58,12 +58,15 @@ void printControlsHelp()
 
 void handleCommand(const string& command, const string& path, unsigned int timeout, Topology& topo, const string& pKey, const string& pVal)
 {
+    std::pair<std::error_code, fair::mq::sdk::TopologyState> changeStateResult;
+
     if (command == "c") {
         cout << "> checking state of the devices" << endl;
         auto const result = topo.GetCurrentState();
         for (const auto& d : result) {
             cout << d.taskId << " : " << d.state << endl;
         }
+        return;
     } else if (command == "o") {
         cout << "> dumping config of " << (path == "" ? "all" : path) << endl;
         // TODO: extend this regex to return all properties, once command size limitation is removed.
@@ -73,6 +76,7 @@ void handleCommand(const string& command, const string& path, unsigned int timeo
                 cout << d.first << ": " << p.first << " : " << p.second << endl;
             }
         }
+        return;
     } else if (command == "p") {
         if (pKey == "" || pVal == "") {
             cout << "cannot send property with empty key and/or value! given key: '" << pKey << "', value: '" << pVal << "'." << endl;
@@ -83,42 +87,48 @@ void handleCommand(const string& command, const string& path, unsigned int timeo
         topo.SetProperties(props, path);
         // give dds time to complete request
         this_thread::sleep_for(chrono::milliseconds(100));
+        return;
     } else if (command == "i") {
         cout << "> initiating InitDevice transition --> " << (path == "" ? "all" : path) << endl;
-        topo.ChangeState(TopologyTransition::InitDevice, path, std::chrono::milliseconds(timeout));
+        changeStateResult = topo.ChangeState(TopologyTransition::InitDevice, path, std::chrono::milliseconds(timeout));
     } else if (command == "k") {
         cout << "> initiating CompleteInit transition --> " << (path == "" ? "all" : path) << endl;
-        topo.ChangeState(TopologyTransition::CompleteInit, path, std::chrono::milliseconds(timeout));
+        changeStateResult = topo.ChangeState(TopologyTransition::CompleteInit, path, std::chrono::milliseconds(timeout));
     } else if (command == "b") {
         cout << "> initiating Bind transition --> " << (path == "" ? "all" : path) << endl;
-        topo.ChangeState(TopologyTransition::Bind, path, std::chrono::milliseconds(timeout));
+        changeStateResult = topo.ChangeState(TopologyTransition::Bind, path, std::chrono::milliseconds(timeout));
     } else if (command == "x") {
         cout << "> initiating Connect transition --> " << (path == "" ? "all" : path) << endl;
-        topo.ChangeState(TopologyTransition::Connect, path, std::chrono::milliseconds(timeout));
+        changeStateResult = topo.ChangeState(TopologyTransition::Connect, path, std::chrono::milliseconds(timeout));
     } else if (command == "j") {
         cout << "> initiating InitTask transition --> " << (path == "" ? "all" : path) << endl;
-        topo.ChangeState(TopologyTransition::InitTask, path, std::chrono::milliseconds(timeout));
+        changeStateResult = topo.ChangeState(TopologyTransition::InitTask, path, std::chrono::milliseconds(timeout));
     } else if (command == "r") {
         cout << "> initiating Run transition --> " << (path == "" ? "all" : path) << endl;
-        topo.ChangeState(TopologyTransition::Run, path, std::chrono::milliseconds(timeout));
+        changeStateResult = topo.ChangeState(TopologyTransition::Run, path, std::chrono::milliseconds(timeout));
     } else if (command == "s") {
         cout << "> initiating Stop transition --> " << (path == "" ? "all" : path) << endl;
-        topo.ChangeState(TopologyTransition::Stop, path, std::chrono::milliseconds(timeout));
+        changeStateResult = topo.ChangeState(TopologyTransition::Stop, path, std::chrono::milliseconds(timeout));
     } else if (command == "t") {
         cout << "> initiating ResetTask transition --> " << (path == "" ? "all" : path) << endl;
-        topo.ChangeState(TopologyTransition::ResetTask, path, std::chrono::milliseconds(timeout));
+        changeStateResult = topo.ChangeState(TopologyTransition::ResetTask, path, std::chrono::milliseconds(timeout));
     } else if (command == "d") {
         cout << "> initiating ResetDevice transition --> " << (path == "" ? "all" : path) << endl;
-        topo.ChangeState(TopologyTransition::ResetDevice, path, std::chrono::milliseconds(timeout));
+        changeStateResult = topo.ChangeState(TopologyTransition::ResetDevice, path, std::chrono::milliseconds(timeout));
     } else if (command == "q") {
         cout << "> initiating End transition --> " << (path == "" ? "all" : path) << endl;
-        topo.ChangeState(TopologyTransition::End, path, std::chrono::milliseconds(timeout));
+        changeStateResult = topo.ChangeState(TopologyTransition::End, path, std::chrono::milliseconds(timeout));
     } else if (command == "h") {
         cout << "> help" << endl;
         printControlsHelp();
+        return;
     } else {
         cout << "\033[01;32mInvalid input: [" << command << "]\033[0m" << endl;
         printControlsHelp();
+        return;
+    }
+    if (changeStateResult.first != std::error_code()) {
+        cout << "ERROR: ChangeState failed for '" << path << "': " << changeStateResult.first.message() << endl;
     }
 }
 

fairmq/shmem/Common.h

@@ -12,13 +12,18 @@
 
 #include <atomic>
 #include <string>
+#include <functional> // std::equal_to
 
-#include <boost/interprocess/managed_shared_memory.hpp>
+#include <boost/functional/hash.hpp>
 #include <boost/interprocess/allocators/allocator.hpp>
 #include <boost/interprocess/containers/map.hpp>
 #include <boost/interprocess/containers/string.hpp>
 #include <boost/interprocess/containers/vector.hpp>
-#include <boost/functional/hash.hpp>
+#include <boost/interprocess/indexes/null_index.hpp>
+#include <boost/interprocess/managed_shared_memory.hpp>
+#include <boost/interprocess/mem_algo/simple_seq_fit.hpp>
+#include <boost/unordered_map.hpp>
+#include <boost/variant.hpp>
 
 #include <unistd.h>
 #include <sys/types.h>
@@ -30,6 +35,17 @@ namespace mq
 namespace shmem
 {
 
+struct SharedMemoryError : std::runtime_error { using std::runtime_error::runtime_error; };
+
+using SimpleSeqFitSegment = boost::interprocess::basic_managed_shared_memory<char,
+    boost::interprocess::simple_seq_fit<boost::interprocess::mutex_family>,
+    boost::interprocess::null_index>;
+    // boost::interprocess::iset_index>;
+using RBTreeBestFitSegment = boost::interprocess::basic_managed_shared_memory<char,
+    boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family>,
+    boost::interprocess::null_index>;
+    // boost::interprocess::iset_index>;
+
 using SegmentManager = boost::interprocess::managed_shared_memory::segment_manager;
 using VoidAlloc      = boost::interprocess::allocator<void, SegmentManager>;
 using CharAlloc      = boost::interprocess::allocator<char, SegmentManager>;
@@ -37,6 +53,12 @@ using Str            = boost::interprocess::basic_string<char, std::char_traits<
 using StrAlloc       = boost::interprocess::allocator<Str, SegmentManager>;
 using StrVector      = boost::interprocess::vector<Str, StrAlloc>;
 
+enum class AllocationAlgorithm : int
+{
+    rbtree_best_fit,
+    simple_seq_fit
+};
+
 struct RegionInfo
 {
     RegionInfo(const VoidAlloc& alloc)
@@ -59,8 +81,22 @@ struct RegionInfo
     bool fDestroyed;
 };
 
-using Uint64RegionInfoPairAlloc = boost::interprocess::allocator<std::pair<const uint64_t, RegionInfo>, SegmentManager>;
+using Uint16RegionInfoPairAlloc = boost::interprocess::allocator<std::pair<const uint16_t, RegionInfo>, SegmentManager>;
-using Uint64RegionInfoMap = boost::interprocess::map<uint64_t, RegionInfo, std::less<uint64_t>, Uint64RegionInfoPairAlloc>;
+using Uint16RegionInfoMap = boost::interprocess::map<uint16_t, RegionInfo, std::less<uint16_t>, Uint16RegionInfoPairAlloc>;
+using Uint16RegionInfoHashMap = boost::unordered_map<uint16_t, RegionInfo, boost::hash<uint16_t>, std::equal_to<uint16_t>, Uint16RegionInfoPairAlloc>;
+
+struct SegmentInfo
+{
+    SegmentInfo(AllocationAlgorithm aa)
+        : fAllocationAlgorithm(aa)
+    {}
+
+    AllocationAlgorithm fAllocationAlgorithm;
+};
+
+using Uint16SegmentInfoPairAlloc = boost::interprocess::allocator<std::pair<const uint16_t, SegmentInfo>, SegmentManager>;
+using Uint16SegmentInfoHashMap = boost::unordered_map<uint16_t, SegmentInfo, boost::hash<uint16_t>, std::equal_to<uint16_t>, Uint16SegmentInfoPairAlloc>;
+// using Uint16SegmentInfoMap = boost::interprocess::map<uint16_t, SegmentInfo, std::less<uint16_t>, Uint16SegmentInfoPairAlloc>;
 
 struct DeviceCounter
 {
@@ -73,21 +109,65 @@ struct DeviceCounter
 
 struct RegionCounter
 {
-    RegionCounter(uint64_t c)
+    RegionCounter(uint16_t c)
         : fCount(c)
     {}
 
-    std::atomic<uint64_t> fCount;
+    std::atomic<uint16_t> fCount;
 };
 
 struct MetaHeader
 {
     size_t fSize;
-    size_t fRegionId;
     size_t fHint;
+    uint16_t fRegionId;
+    uint16_t fSegmentId;
     boost::interprocess::managed_shared_memory::handle_t fHandle;
 };
 
+#ifdef FAIRMQ_DEBUG_MODE
+struct MsgCounter
+{
+    MsgCounter()
+        : fCount(0)
+    {}
+
+    MsgCounter(unsigned int c)
+        : fCount(c)
+    {}
+
+    std::atomic<unsigned int> fCount;
+};
+
+using Uint16MsgCounterPairAlloc = boost::interprocess::allocator<std::pair<const uint16_t, MsgCounter>, SegmentManager>;
+using Uint16MsgCounterHashMap = boost::unordered_map<uint16_t, MsgCounter, boost::hash<uint16_t>, std::equal_to<uint16_t>, Uint16MsgCounterPairAlloc>;
+
+struct MsgDebug
+{
+    MsgDebug()
+        : fPid(0)
+        , fSize(0)
+        , fCreationTime(0)
+    {}
+
+    MsgDebug(pid_t pid, size_t size, const uint64_t creationTime)
+        : fPid(pid)
+        , fSize(size)
+        , fCreationTime(creationTime)
+    {}
+
+    pid_t fPid;
+    size_t fSize;
+    uint64_t fCreationTime;
+};
+
+using SizetMsgDebugPairAlloc = boost::interprocess::allocator<std::pair<const size_t, MsgDebug>, SegmentManager>;
+// using SizetMsgDebugHashMap = boost::unordered_map<size_t, MsgDebug, boost::hash<size_t>, std::equal_to<size_t>, SizetMsgDebugPairAlloc>;
+using SizetMsgDebugMap = boost::interprocess::map<size_t, MsgDebug, std::less<size_t>, SizetMsgDebugPairAlloc>;
+using Uint16MsgDebugMapPairAlloc = boost::interprocess::allocator<std::pair<const uint16_t, SizetMsgDebugMap>, SegmentManager>;
+using Uint16MsgDebugMapHashMap = boost::unordered_map<uint16_t, SizetMsgDebugMap, boost::hash<uint16_t>, std::equal_to<uint16_t>, Uint16MsgDebugMapPairAlloc>;
+#endif
+
 struct RegionBlock
 {
     RegionBlock()
@@ -120,6 +200,101 @@ inline std::string buildShmIdFromSessionIdAndUserId(const std::string& sessionId
     return shmId;
 }
 
+struct SegmentSize : public boost::static_visitor<size_t>
+{
+    template<typename S>
+    size_t operator()(S& s) const { return s.get_size(); }
+};
+
+struct SegmentAddress : public boost::static_visitor<void*>
+{
+    template<typename S>
+    void* operator()(S& s) const { return s.get_address(); }
+};
+
+struct SegmentMemoryZeroer : public boost::static_visitor<>
+{
+    template<typename S>
+    void operator()(S& s) const { s.zero_free_memory(); }
+};
+
+struct SegmentFreeMemory : public boost::static_visitor<size_t>
+{
+    template<typename S>
+    size_t operator()(S& s) const { return s.get_free_memory(); }
+};
+
+struct SegmentHandleFromAddress : public boost::static_visitor<boost::interprocess::managed_shared_memory::handle_t>
+{
+    SegmentHandleFromAddress(const void* _ptr) : ptr(_ptr) {}
+
+    template<typename S>
+    boost::interprocess::managed_shared_memory::handle_t operator()(S& s) const { return s.get_handle_from_address(ptr); }
+
+    const void* ptr;
+};
+
+struct SegmentAddressFromHandle : public boost::static_visitor<void*>
+{
+    SegmentAddressFromHandle(const boost::interprocess::managed_shared_memory::handle_t _handle) : handle(_handle) {}
+
+    template<typename S>
+    void* operator()(S& s) const { return s.get_address_from_handle(handle); }
+
+    const boost::interprocess::managed_shared_memory::handle_t handle;
+};
+
+struct SegmentAllocate : public boost::static_visitor<void*>
+{
+    SegmentAllocate(const size_t _size) : size(_size) {}
+
+    template<typename S>
+    void* operator()(S& s) const { return s.allocate(size); }
+
+    const size_t size;
+};
+
+struct SegmentAllocateAligned : public boost::static_visitor<void*>
+{
+    SegmentAllocateAligned(const size_t _size, const size_t _alignment) : size(_size), alignment(_alignment) {}
+
+    template<typename S>
+    void* operator()(S& s) const { return s.allocate_aligned(size, alignment); }
+
+    const size_t size;
+    const size_t alignment;
+};
+
+struct SegmentBufferShrink : public boost::static_visitor<char*>
+{
+    SegmentBufferShrink(const size_t _old_size, const size_t _new_size, char* _local_ptr)
+        : old_size(_old_size)
+        , new_size(_new_size)
+        , local_ptr(_local_ptr)
+    {}
+
+    template<typename S>
+    char* operator()(S& s) const
+    {
+        boost::interprocess::managed_shared_memory::size_type shrunk_size = new_size;
+        return s.template allocation_command<char>(boost::interprocess::shrink_in_place, old_size + 128, shrunk_size, local_ptr);
+    }
+
+    const size_t old_size;
+    const size_t new_size;
+    mutable char* local_ptr;
+};
+
+struct SegmentDeallocate : public boost::static_visitor<>
+{
+    SegmentDeallocate(void* _ptr) : ptr(_ptr) {}
+
+    template<typename S>
+    void operator()(S& s) const { return s.deallocate(ptr); }
+
+    void* ptr;
+};
+
 } // namespace shmem
 } // namespace mq
 } // namespace fair

fairmq/shmem/Manager.h

@@ -27,18 +27,18 @@
 
 #include <boost/date_time/posix_time/posix_time.hpp>
 #include <boost/filesystem.hpp>
-#include <boost/interprocess/indexes/null_index.hpp>
 #include <boost/interprocess/ipc/message_queue.hpp>
 #include <boost/interprocess/managed_shared_memory.hpp>
 #include <boost/interprocess/sync/named_condition.hpp>
 #include <boost/interprocess/sync/named_mutex.hpp>
-#include <boost/interprocess/mem_algo/simple_seq_fit.hpp>
 #include <boost/process.hpp>
+#include <boost/variant.hpp>
 
 #include <cstdlib> // getenv
 #include <condition_variable>
 #include <mutex>
 #include <set>
+#include <sstream>
 #include <stdexcept>
 #include <string>
 #include <thread>
@@ -55,45 +55,43 @@ namespace mq
 namespace shmem
 {
 
-struct SharedMemoryError : std::runtime_error { using std::runtime_error::runtime_error; };
-
-using SimpleSeqFitSegment = boost::interprocess::basic_managed_shared_memory<char,
-    boost::interprocess::simple_seq_fit<boost::interprocess::mutex_family>,
-    boost::interprocess::iset_index>;
-using RBTreeBestFitSegment = boost::interprocess::basic_managed_shared_memory<char,
-    boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family>,
-    boost::interprocess::iset_index>;
-
 class Manager
 {
   public:
     Manager(std::string shmId, std::string deviceId, size_t size, const ProgOptions* config)
         : fShmId(std::move(shmId))
+        , fSegmentId(config ? config->GetProperty<uint16_t>("shm-segment-id", 0) : 0)
         , fDeviceId(std::move(deviceId))
-        , fSegment(boost::interprocess::open_or_create, std::string("fmq_" + fShmId + "_main").c_str(), size)
+        , fSegments()
-        , fManagementSegment(boost::interprocess::open_or_create, std::string("fmq_" + fShmId + "_mng").c_str(), 655360)
+        , fManagementSegment(boost::interprocess::open_or_create, std::string("fmq_" + fShmId + "_mng").c_str(), 6553600)
         , fShmVoidAlloc(fManagementSegment.get_segment_manager())
         , fShmMtx(boost::interprocess::open_or_create, std::string("fmq_" + fShmId + "_mtx").c_str())
         , fRegionEventsCV(boost::interprocess::open_or_create, std::string("fmq_" + fShmId + "_cv").c_str())
         , fRegionEventsSubscriptionActive(false)
         , fDeviceCounter(nullptr)
-        , fRegionInfos(nullptr)
+        , fShmSegments(nullptr)
+        , fShmRegions(nullptr)
         , fInterrupted(false)
         , fMsgCounter(0)
+#ifdef FAIRMQ_DEBUG_MODE
+        , fMsgDebug(nullptr)
+        , fShmMsgCounters(nullptr)
+#endif
         , fHeartbeatThread()
         , fSendHeartbeats(true)
-        , fThrowOnBadAlloc(true)
+        , fThrowOnBadAlloc(config ? config->GetProperty<bool>("shm-throw-bad-alloc", true) : true)
     {
         using namespace boost::interprocess;
 
         bool mlockSegment = false;
         bool zeroSegment = false;
         bool autolaunchMonitor = false;
+        std::string allocationAlgorithm("rbtree_best_fit");
         if (config) {
             mlockSegment = config->GetProperty<bool>("shm-mlock-segment", mlockSegment);
             zeroSegment = config->GetProperty<bool>("shm-zero-segment", zeroSegment);
             autolaunchMonitor = config->GetProperty<bool>("shm-monitor", autolaunchMonitor);
-            fThrowOnBadAlloc = config->GetProperty<bool>("shm-throw-bad-alloc", fThrowOnBadAlloc);
+            allocationAlgorithm = config->GetProperty<std::string>("shm-allocation", allocationAlgorithm);
         } else {
             LOG(debug) << "ProgOptions not available! Using defaults.";
         }
@@ -102,25 +100,68 @@ class Manager
             StartMonitor(fShmId);
         }
 
-        LOG(debug) << "created/opened shared memory segment '" << "fmq_" << fShmId << "_main" << "' of " << fSegment.get_size() << " bytes. Available are " << fSegment.get_free_memory() << " bytes.";
+        {
+            std::stringstream ss;
+            boost::interprocess::scoped_lock<boost::interprocess::named_mutex> lock(fShmMtx);
+
+            fShmSegments = fManagementSegment.find_or_construct<Uint16SegmentInfoHashMap>(unique_instance)(fShmVoidAlloc);
+
+            try {
+                auto it = fShmSegments->find(fSegmentId);
+                if (it == fShmSegments->end()) {
+                    // no segment with given id exists, creating
+                    if (allocationAlgorithm == "rbtree_best_fit") {
+                        fSegments.emplace(fSegmentId, RBTreeBestFitSegment(create_only, std::string("fmq_" + fShmId + "_m_" + std::to_string(fSegmentId)).c_str(), size));
+                        fShmSegments->emplace(fSegmentId, AllocationAlgorithm::rbtree_best_fit);
+                    } else if (allocationAlgorithm == "simple_seq_fit") {
+                        fSegments.emplace(fSegmentId, SimpleSeqFitSegment(create_only, std::string("fmq_" + fShmId + "_m_" + std::to_string(fSegmentId)).c_str(), size));
+                        fShmSegments->emplace(fSegmentId, AllocationAlgorithm::simple_seq_fit);
+                    }
+                    ss << "Created ";
+                } else {
+                    // found segment with the given id, opening
+                    if (it->second.fAllocationAlgorithm == AllocationAlgorithm::rbtree_best_fit) {
+                        fSegments.emplace(fSegmentId, RBTreeBestFitSegment(open_only, std::string("fmq_" + fShmId + "_m_" + std::to_string(fSegmentId)).c_str()));
+                        if (allocationAlgorithm != "rbtree_best_fit") {
+                            LOG(warn) << "Allocation algorithm of the opened segment is rbtree_best_fit, but requested is " << allocationAlgorithm << ". Ignoring requested setting.";
+                            allocationAlgorithm = "rbtree_best_fit";
+                        }
+                    } else {
+                        fSegments.emplace(fSegmentId, SimpleSeqFitSegment(open_only, std::string("fmq_" + fShmId + "_m_" + std::to_string(fSegmentId)).c_str()));
+                        if (allocationAlgorithm != "simple_seq_fit") {
+                            LOG(warn) << "Allocation algorithm of the opened segment is simple_seq_fit, but requested is " << allocationAlgorithm << ". Ignoring requested setting.";
+                            allocationAlgorithm = "simple_seq_fit";
+                        }
+                    }
+                    ss << "Opened ";
+                }
+                ss << "shared memory segment '" << "fmq_" << fShmId << "_m_" << fSegmentId << "'."
+                << " Size: " << boost::apply_visitor(SegmentSize{}, fSegments.at(fSegmentId)) << " bytes."
+                << " Available: " << boost::apply_visitor(SegmentFreeMemory{}, fSegments.at(fSegmentId)) << " bytes."
+                << " Allocation algorithm: " << allocationAlgorithm;
+                LOG(debug) << ss.str();
+            } catch(interprocess_exception& bie) {
+                LOG(error) << "something went wrong: " << bie.what();
+            }
+        }
+
         if (mlockSegment) {
             LOG(debug) << "Locking the managed segment memory pages...";
-            if (mlock(fSegment.get_address(), fSegment.get_size()) == -1) {
+            if (mlock(boost::apply_visitor(SegmentAddress{}, fSegments.at(fSegmentId)), boost::apply_visitor(SegmentSize{}, fSegments.at(fSegmentId))) == -1) {
                 LOG(error) << "Could not lock the managed segment memory. Code: " << errno << ", reason: " << strerror(errno);
             }
             LOG(debug) << "Successfully locked the managed segment memory pages.";
         }
         if (zeroSegment) {
             LOG(debug) << "Zeroing the managed segment free memory...";
-            fSegment.zero_free_memory();
+            boost::apply_visitor(SegmentMemoryZeroer{}, fSegments.at(fSegmentId));
             LOG(debug) << "Successfully zeroed the managed segment free memory.";
         }
 
-        fRegionInfos = fManagementSegment.find_or_construct<Uint64RegionInfoMap>(unique_instance)(fShmVoidAlloc);
+        {
-        // store info about the managed segment as region with id 0
+            boost::interprocess::scoped_lock<boost::interprocess::named_mutex> lock(fShmMtx);
-        fRegionInfos->emplace(0, RegionInfo("", 0, 0, fShmVoidAlloc));
 
-        boost::interprocess::scoped_lock<named_mutex> lock(fShmMtx);
+            fShmRegions = fManagementSegment.find_or_construct<Uint16RegionInfoHashMap>(unique_instance)(fShmVoidAlloc);
 
             fDeviceCounter = fManagementSegment.find<DeviceCounter>(unique_instance).first;
 
@@ -134,6 +175,12 @@ class Manager
                 LOG(debug) << "initialized device counter with: " << fDeviceCounter->fCount;
             }
 
+#ifdef FAIRMQ_DEBUG_MODE
+            fMsgDebug = fManagementSegment.find_or_construct<Uint16MsgDebugMapHashMap>(unique_instance)(fShmVoidAlloc);
+            fShmMsgCounters = fManagementSegment.find_or_construct<Uint16MsgCounterHashMap>(unique_instance)(fShmVoidAlloc);
+#endif
+        }
+
         fHeartbeatThread = std::thread(&Manager::SendHeartbeats, this);
     }
 
@@ -142,9 +189,6 @@ class Manager
     Manager(const Manager&) = delete;
     Manager operator=(const Manager&) = delete;
 
-    RBTreeBestFitSegment& Segment() { return fSegment; }
-    boost::interprocess::managed_shared_memory& ManagementSegment() { return fManagementSegment; }
-
     static void StartMonitor(const std::string& id)
     {
         using namespace boost::interprocess;
@@ -196,7 +240,7 @@ class Manager
     }
     bool Interrupted() { return fInterrupted.load(); }
 
-    std::pair<boost::interprocess::mapped_region*, uint64_t> CreateRegion(const size_t size,
+    std::pair<boost::interprocess::mapped_region*, uint16_t> CreateRegion(const size_t size,
                                                                           const int64_t userFlags,
                                                                           RegionCallback callback,
                                                                           RegionBulkCallback bulkCallback,
@@ -205,10 +249,10 @@ class Manager
     {
         using namespace boost::interprocess;
         try {
-            std::pair<mapped_region*, uint64_t> result;
+            std::pair<mapped_region*, uint16_t> result;
 
             {
-                uint64_t id = 0;
+                uint16_t id = 0;
                 boost::interprocess::scoped_lock<boost::interprocess::named_mutex> lock(fShmMtx);
 
                 RegionCounter* rc = fManagementSegment.find<RegionCounter>(unique_instance).first;
@@ -232,7 +276,7 @@ class Manager
                 }
 
                 // create region info
-                fRegionInfos->emplace(id, RegionInfo(path.c_str(), flags, userFlags, fShmVoidAlloc));
+                fShmRegions->emplace(id, RegionInfo(path.c_str(), flags, userFlags, fShmVoidAlloc));
 
                 auto r = fRegions.emplace(id, tools::make_unique<Region>(fShmId, id, size, false, callback, bulkCallback, path, flags));
                 // LOG(debug) << "Created region with id '" << id << "', path: '" << path << "', flags: '" << flags << "'";
@@ -252,13 +296,13 @@ class Manager
         }
     }
 
-    Region* GetRegion(const uint64_t id)
+    Region* GetRegion(const uint16_t id)
     {
         boost::interprocess::scoped_lock<boost::interprocess::named_mutex> lock(fShmMtx);
         return GetRegionUnsafe(id);
     }
 
-    Region* GetRegionUnsafe(const uint64_t id)
+    Region* GetRegionUnsafe(const uint16_t id)
     {
         // remote region could actually be a local one if a message originates from this device (has been sent out and returned)
         auto it = fRegions.find(id);
@@ -267,7 +311,7 @@ class Manager
         } else {
             try {
                 // get region info
-                RegionInfo regionInfo = fRegionInfos->at(id);
+                RegionInfo regionInfo = fShmRegions->at(id);
                 std::string path = regionInfo.fPath.c_str();
                 int flags = regionInfo.fFlags;
                 // LOG(debug) << "Located remote region with id '" << id << "', path: '" << path << "', flags: '" << flags << "'";
@@ -285,12 +329,12 @@ class Manager
         }
     }
 
-    void RemoveRegion(const uint64_t id)
+    void RemoveRegion(const uint16_t id)
     {
         fRegions.erase(id);
         {
             boost::interprocess::scoped_lock<boost::interprocess::named_mutex> lock(fShmMtx);
-            fRegionInfos->at(id).fDestroyed = true;
+            fShmRegions->at(id).fDestroyed = true;
         }
         fRegionEventsCV.notify_all();
     }
@@ -305,12 +349,12 @@ class Manager
     {
         std::vector<fair::mq::RegionInfo> result;
 
-        for (const auto& e : *fRegionInfos) {
+        for (const auto& e : *fShmRegions) {
             fair::mq::RegionInfo info;
+            info.managed = false;
             info.id = e.first;
             info.flags = e.second.fUserFlags;
             info.event = e.second.fDestroyed ? RegionEvent::destroyed : RegionEvent::created;
-            if (info.id != 0) {
             if (!e.second.fDestroyed) {
                 auto region = GetRegionUnsafe(info.id);
                 info.ptr = region->fRegion.get_address();
@@ -320,17 +364,17 @@ class Manager
                 info.size = 0;
             }
             result.push_back(info);
-            } else {
-                if (!e.second.fDestroyed) {
-                    info.ptr = fSegment.get_address();
-                    info.size = fSegment.get_size();
-                } else {
-                    info.ptr = nullptr;
-                    info.size = 0;
         }
+
+        for (const auto& e : *fShmSegments) {
+            fair::mq::RegionInfo info;
+            info.managed = true;
+            info.id = e.first;
+            info.event = RegionEvent::created;
+            info.ptr = boost::apply_visitor(SegmentAddress{}, fSegments.at(e.first));
+            info.size = boost::apply_visitor(SegmentSize{}, fSegments.at(e.first));
             result.push_back(info);
         }
-        }
 
         return result;
     }
@@ -394,6 +438,13 @@ class Manager
     void IncrementMsgCounter() { fMsgCounter.fetch_add(1, std::memory_order_relaxed); }
     void DecrementMsgCounter() { fMsgCounter.fetch_sub(1, std::memory_order_relaxed); }
 
+#ifdef FAIRMQ_DEBUG_MODE
+    void IncrementShmMsgCounter(uint16_t segmentId) { ++((*fShmMsgCounters)[segmentId].fCount); }
+    void DecrementShmMsgCounter(uint16_t segmentId) { --((*fShmMsgCounters)[segmentId].fCount); }
+#endif
+
+    boost::interprocess::named_mutex& GetMtx() { return fShmMtx; }
+
     void SendHeartbeats()
     {
         std::string controlQueueName("fmq_" + fShmId + "_cq");
@@ -416,6 +467,108 @@ class Manager
 
     bool ThrowingOnBadAlloc() const { return fThrowOnBadAlloc; }
 
+    void GetSegment(uint16_t id)
+    {
+        auto it = fSegments.find(id);
+        if (it == fSegments.end()) {
+            try {
+                // get region info
+                SegmentInfo segmentInfo = fShmSegments->at(id);
+                LOG(info) << "LOCATED SEGMENT WITH ID '" << id << "'";
+
+                using namespace boost::interprocess;
+
+                if (segmentInfo.fAllocationAlgorithm == AllocationAlgorithm::rbtree_best_fit) {
+                    fSegments.emplace(id, RBTreeBestFitSegment(open_only, std::string("fmq_" + fShmId + "_m_" + std::to_string(id)).c_str()));
+                } else {
+                    fSegments.emplace(id, SimpleSeqFitSegment(open_only, std::string("fmq_" + fShmId + "_m_" + std::to_string(id)).c_str()));
+                }
+            } catch (std::out_of_range& oor) {
+                LOG(error) << "Could not get segment with id '" << id << "': " << oor.what();
+            } catch (boost::interprocess::interprocess_exception& bie) {
+                LOG(error) << "Could not get segment with id '" << id << "': " << bie.what();
+            }
+        }
+    }
+
+    boost::interprocess::managed_shared_memory::handle_t GetHandleFromAddress(const void* ptr, uint16_t segmentId) const
+    {
+        return boost::apply_visitor(SegmentHandleFromAddress{ptr}, fSegments.at(segmentId));
+    }
+    void* GetAddressFromHandle(const boost::interprocess::managed_shared_memory::handle_t handle, uint16_t segmentId) const
+    {
+        return boost::apply_visitor(SegmentAddressFromHandle{handle}, fSegments.at(segmentId));
+    }
+
+    char* Allocate(const size_t size, size_t alignment = 0)
+    {
+        char* ptr = nullptr;
+        // tools::RateLimiter rateLimiter(20);
+
+        while (ptr == nullptr) {
+            try {
+                // boost::interprocess::managed_shared_memory::size_type actualSize = size;
+                // char* hint = 0; // unused for boost::interprocess::allocate_new
+                // ptr = fSegments.at(fSegmentId).allocation_command<char>(boost::interprocess::allocate_new, size, actualSize, hint);
+                size_t segmentSize = boost::apply_visitor(SegmentSize{}, fSegments.at(fSegmentId));
+                if (size > segmentSize) {
+                    throw MessageBadAlloc(tools::ToString("Requested message size (", size, ") exceeds segment size (", segmentSize, ")"));
+                }
+                if (alignment == 0) {
+                    ptr = reinterpret_cast<char*>(boost::apply_visitor(SegmentAllocate{size}, fSegments.at(fSegmentId)));
+                } else {
+                    ptr = reinterpret_cast<char*>(boost::apply_visitor(SegmentAllocateAligned{size, alignment}, fSegments.at(fSegmentId)));
+                }
+            } catch (boost::interprocess::bad_alloc& ba) {
+                // LOG(warn) << "Shared memory full...";
+                if (ThrowingOnBadAlloc()) {
+                    throw MessageBadAlloc(tools::ToString("shmem: could not create a message of size ", size, ", alignment: ", (alignment != 0) ? std::to_string(alignment) : "default", ", free memory: ", boost::apply_visitor(SegmentFreeMemory{}, fSegments.at(fSegmentId))));
+                }
+                // rateLimiter.maybe_sleep();
+                std::this_thread::sleep_for(std::chrono::milliseconds(50));
+                if (Interrupted()) {
+                    return ptr;
+                } else {
+                    continue;
+                }
+            }
+#ifdef FAIRMQ_DEBUG_MODE
+            boost::interprocess::scoped_lock<boost::interprocess::named_mutex> lock(fShmMtx);
+            IncrementShmMsgCounter(fSegmentId);
+            if (fMsgDebug->count(fSegmentId) == 0) {
+                (*fMsgDebug).emplace(fSegmentId, fShmVoidAlloc);
+            }
+            (*fMsgDebug).at(fSegmentId).emplace(
+                static_cast<size_t>(GetHandleFromAddress(ptr, fSegmentId)),
+                MsgDebug(getpid(), size, std::chrono::system_clock::now().time_since_epoch().count())
+            );
+#endif
+        }
+
+        return ptr;
+    }
+
+    void Deallocate(boost::interprocess::managed_shared_memory::handle_t handle, uint16_t segmentId)
+    {
+        boost::apply_visitor(SegmentDeallocate{GetAddressFromHandle(handle, segmentId)}, fSegments.at(segmentId));
+#ifdef FAIRMQ_DEBUG_MODE
+        boost::interprocess::scoped_lock<boost::interprocess::named_mutex> lock(fShmMtx);
+        DecrementShmMsgCounter(segmentId);
+        try {
+            (*fMsgDebug).at(segmentId).erase(handle);
+        } catch(const std::out_of_range& oor) {
+            LOG(debug) << "could not locate debug container for " << segmentId << ": " << oor.what();
+        }
+#endif
+    }
+
+    char* ShrinkInPlace(size_t oldSize, size_t newSize, char* localPtr, uint16_t segmentId)
+    {
+        return boost::apply_visitor(SegmentBufferShrink{oldSize, newSize, localPtr}, fSegments.at(segmentId));
+    }
+
+    uint16_t GetSegmentId() const { return fSegmentId; }
+
     ~Manager()
     {
         using namespace boost::interprocess;
@@ -454,9 +607,9 @@ class Manager
 
   private:
     std::string fShmId;
+    uint16_t fSegmentId;
     std::string fDeviceId;
-    // boost::interprocess::managed_shared_memory fSegment;
+    std::unordered_map<uint16_t, boost::variant<RBTreeBestFitSegment, SimpleSeqFitSegment>> fSegments;
-    RBTreeBestFitSegment fSegment;
     boost::interprocess::managed_shared_memory fManagementSegment;
     VoidAlloc fShmVoidAlloc;
     boost::interprocess::named_mutex fShmMtx;
@@ -465,14 +618,19 @@ class Manager
     std::thread fRegionEventThread;
     bool fRegionEventsSubscriptionActive;
     std::function<void(fair::mq::RegionInfo)> fRegionEventCallback;
-    std::unordered_map<uint64_t, RegionEvent> fObservedRegionEvents;
+    std::unordered_map<uint16_t, RegionEvent> fObservedRegionEvents;
 
     DeviceCounter* fDeviceCounter;
-    Uint64RegionInfoMap* fRegionInfos;
+    Uint16SegmentInfoHashMap* fShmSegments;
-    std::unordered_map<uint64_t, std::unique_ptr<Region>> fRegions;
+    Uint16RegionInfoHashMap* fShmRegions;
+    std::unordered_map<uint16_t, std::unique_ptr<Region>> fRegions;
 
     std::atomic<bool> fInterrupted;
     std::atomic<int32_t> fMsgCounter; // TODO: find a better lifetime solution instead of the counter
+#ifdef FAIRMQ_DEBUG_MODE
+    Uint16MsgDebugMapHashMap* fMsgDebug;
+    Uint16MsgCounterHashMap* fShmMsgCounters;
+#endif
 
     std::thread fHeartbeatThread;
     bool fSendHeartbeats;

fairmq/shmem/Message.h

@@ -22,6 +22,9 @@
 #include <cstddef> // size_t
 #include <atomic>
 
+#include <sys/types.h> // getpid
+#include <unistd.h> // pid_t
+
 namespace fair
 {
 namespace mq
@@ -40,7 +43,7 @@ class Message final : public fair::mq::Message
         : fair::mq::Message(factory)
         , fManager(manager)
         , fQueued(false)
-        , fMeta{0, 0, 0, -1}
+        , fMeta{0, 0, 0, fManager.GetSegmentId(), -1}
         , fRegionPtr(nullptr)
         , fLocalPtr(nullptr)
     {
@@ -51,7 +54,7 @@ class Message final : public fair::mq::Message
         : fair::mq::Message(factory)
         , fManager(manager)
         , fQueued(false)
-        , fMeta{0, 0, 0, -1}
+        , fMeta{0, 0, 0, fManager.GetSegmentId(), -1}
         , fRegionPtr(nullptr)
         , fLocalPtr(nullptr)
     {
@@ -62,7 +65,7 @@ class Message final : public fair::mq::Message
         : fair::mq::Message(factory)
         , fManager(manager)
         , fQueued(false)
-        , fMeta{0, 0, 0, -1}
+        , fMeta{0, 0, 0, fManager.GetSegmentId(), -1}
         , fRegionPtr(nullptr)
         , fLocalPtr(nullptr)
     {
@@ -74,7 +77,7 @@ class Message final : public fair::mq::Message
         : fair::mq::Message(factory)
         , fManager(manager)
         , fQueued(false)
-        , fMeta{0, 0, 0, -1}
+        , fMeta{0, 0, 0, fManager.GetSegmentId(), -1}
         , fRegionPtr(nullptr)
         , fLocalPtr(nullptr)
     {
@@ -86,7 +89,7 @@ class Message final : public fair::mq::Message
         : fair::mq::Message(factory)
         , fManager(manager)
         , fQueued(false)
-        , fMeta{0, 0, 0, -1}
+        , fMeta{0, 0, 0, fManager.GetSegmentId(), -1}
         , fRegionPtr(nullptr)
         , fLocalPtr(nullptr)
     {
@@ -105,7 +108,7 @@ class Message final : public fair::mq::Message
         : fair::mq::Message(factory)
         , fManager(manager)
         , fQueued(false)
-        , fMeta{size, static_cast<UnmanagedRegion*>(region.get())->fRegionId, reinterpret_cast<size_t>(hint), -1}
+        , fMeta{size, reinterpret_cast<size_t>(hint), static_cast<UnmanagedRegion*>(region.get())->fRegionId, fManager.GetSegmentId(), -1}
         , fRegionPtr(nullptr)
         , fLocalPtr(static_cast<char*>(data))
     {
@@ -166,7 +169,8 @@ class Message final : public fair::mq::Message
         if (!fLocalPtr) {
             if (fMeta.fRegionId == 0) {
                 if (fMeta.fSize > 0) {
-                    fLocalPtr = reinterpret_cast<char*>(fManager.Segment().get_address_from_handle(fMeta.fHandle));
+                    fManager.GetSegment(fMeta.fSegmentId);
+                    fLocalPtr = reinterpret_cast<char*>(fManager.GetAddressFromHandle(fMeta.fHandle, fMeta.fSegmentId));
                 } else {
                     fLocalPtr = nullptr;
                 }
@@ -186,15 +190,14 @@ class Message final : public fair::mq::Message
 
     size_t GetSize() const override { return fMeta.fSize; }
 
-    bool SetUsedSize(const size_t size) override
+    bool SetUsedSize(const size_t newSize) override
     {
-        if (size == fMeta.fSize) {
+        if (newSize == fMeta.fSize) {
             return true;
-        } else if (size <= fMeta.fSize) {
+        } else if (newSize <= fMeta.fSize) {
             try {
-                boost::interprocess::managed_shared_memory::size_type shrunkSize = size;
+                fLocalPtr = fManager.ShrinkInPlace(fMeta.fSize, newSize, fLocalPtr, fMeta.fSegmentId);
-                fLocalPtr = fManager.Segment().allocation_command<char>(boost::interprocess::shrink_in_place, fMeta.fSize + 128, shrunkSize, fLocalPtr);
+                fMeta.fSize = newSize;
-                fMeta.fSize = size;
                 return true;
             } catch (boost::interprocess::interprocess_exception& e) {
                 LOG(info) << "could not set used size: " << e.what();
@@ -242,49 +245,22 @@ class Message final : public fair::mq::Message
     mutable Region* fRegionPtr;
     mutable char* fLocalPtr;
 
-    bool InitializeChunk(const size_t size, size_t alignment = 0)
+    char* InitializeChunk(const size_t size, size_t alignment = 0)
     {
-        // tools::RateLimiter rateLimiter(20);
+        fLocalPtr = fManager.Allocate(size, alignment);
-
+        if (fLocalPtr) {
-        while (fMeta.fHandle < 0) {
+            fMeta.fHandle = fManager.GetHandleFromAddress(fLocalPtr, fMeta.fSegmentId);
-            try {
-                // boost::interprocess::managed_shared_memory::size_type actualSize = size;
-                // char* hint = 0; // unused for boost::interprocess::allocate_new
-                // fLocalPtr = fManager.Segment().allocation_command<char>(boost::interprocess::allocate_new, size, actualSize, hint);
-                size_t segmentSize = fManager.Segment().get_size();
-                if (size > segmentSize) {
-                    throw MessageBadAlloc(tools::ToString("Requested message size (", size, ") exceeds segment size (", segmentSize, ")"));
-                }
-                if (alignment == 0) {
-                    fLocalPtr = reinterpret_cast<char*>(fManager.Segment().allocate(size));
-                } else {
-                    fLocalPtr = reinterpret_cast<char*>(fManager.Segment().allocate_aligned(size, alignment));
-                }
-            } catch (boost::interprocess::bad_alloc& ba) {
-                // LOG(warn) << "Shared memory full...";
-                if (fManager.ThrowingOnBadAlloc()) {
-                    throw MessageBadAlloc(tools::ToString("shmem: could not create a message of size ", size, ", alignment: ", (alignment != 0) ? std::to_string(alignment) : "default", ", free memory: ", fManager.Segment().get_free_memory()));
-                }
-                // rateLimiter.maybe_sleep();
-                std::this_thread::sleep_for(std::chrono::milliseconds(50));
-                if (fManager.Interrupted()) {
-                    return false;
-                } else {
-                    continue;
-                }
-            }
-            fMeta.fHandle = fManager.Segment().get_handle_from_address(fLocalPtr);
-        }
-
             fMeta.fSize = size;
-        return true;
+        }
+        return fLocalPtr;
     }
 
     void CloseMessage()
     {
         if (fMeta.fHandle >= 0 && !fQueued) {
             if (fMeta.fRegionId == 0) {
-                fManager.Segment().deallocate(fManager.Segment().get_address_from_handle(fMeta.fHandle));
+                fManager.GetSegment(fMeta.fSegmentId);
+                fManager.Deallocate(fMeta.fHandle, fMeta.fSegmentId);
                 fMeta.fHandle = -1;
             } else {
                 if (!fRegionPtr) {
@@ -298,6 +274,8 @@ class Message final : public fair::mq::Message
                 }
             }
         }
+        fLocalPtr = nullptr;
+        fMeta.fSize = 0;
 
         fManager.DecrementMsgCounter();
     }

fairmq/shmem/Monitor.cxx

@@ -27,6 +27,7 @@
 #include <ctime>
 #include <time.h>
 #include <iomanip>
+#include <sstream>
 
 #include <termios.h>
 #include <poll.h>
@@ -63,7 +64,7 @@ Monitor::Monitor(const string& shmId, bool selfDestruct, bool interactive, bool
     , fTimeoutInMS(timeoutInMS)
     , fIntervalInMS(intervalInMS)
     , fShmId(shmId)
-    , fSegmentName("fmq_" + fShmId + "_main")
+    , fSegmentName("fmq_" + fShmId + "_m_0")
     , fManagementSegmentName("fmq_" + fShmId + "_mng")
     , fControlQueueName("fmq_" + fShmId + "_cq")
     , fTerminating(false)
@@ -189,8 +190,6 @@ void Monitor::Interactive()
 
     cout << endl;
     PrintHelp();
-    cout << endl;
-    PrintHeader();
 
     while (!fTerminating) {
         if (poll(cinfd, 1, fIntervalInMS)) {
@@ -205,10 +204,6 @@ void Monitor::Interactive()
                     cout << "\n[q] --> quitting." << endl;
                     fTerminating = true;
                     break;
-                case 'p':
-                    cout << "\n[p] --> active queues:" << endl;
-                    PrintQueues();
-                    break;
                 case 'x':
                     cout << "\n[x] --> closing shared memory:" << endl;
                     if (!fViewOnly) {
@@ -225,6 +220,9 @@ void Monitor::Interactive()
                 case '\n':
                     cout << "\n[\\n] --> invalid input." << endl;
                     break;
+                case 'b':
+                    PrintDebugInfo(ShmId{fShmId});
+                    break;
                 default:
                     cout << "\n[" << c << "] --> invalid input." << endl;
                     break;
@@ -233,8 +231,6 @@ void Monitor::Interactive()
             if (fTerminating) {
                 break;
             }
-
-            PrintHeader();
         }
 
         if (fTerminating) {
@@ -251,45 +247,43 @@ void Monitor::Interactive()
 
 void Monitor::CheckSegment()
 {
-    char c = '#';
+    using namespace boost::interprocess;
-
-    if (fInteractive) {
-        static uint64_t counter = 0;
-        int mod = counter++ % 5;
-        switch (mod) {
-            case 0:
-                c = '-';
-                break;
-            case 1:
-                c = '\\';
-                break;
-            case 2:
-                c = '|';
-                break;
-            case 3:
-                c = '-';
-                break;
-            case 4:
-                c = '/';
-                break;
-            default:
-                break;
-        }
-    }
 
     try {
-        bipc::managed_shared_memory segment(bipc::open_only, fSegmentName.c_str());
+        managed_shared_memory managementSegment(open_only, fManagementSegmentName.c_str());
-        bipc::managed_shared_memory managementSegment(bipc::open_only, fManagementSegmentName.c_str());
+        VoidAlloc allocInstance(managementSegment.get_segment_manager());
+
+        Uint16SegmentInfoHashMap* segmentInfos = managementSegment.find<Uint16SegmentInfoHashMap>(unique_instance).first;
+        std::unordered_map<uint16_t, boost::variant<RBTreeBestFitSegment, SimpleSeqFitSegment>> segments;
+
+        if (!segmentInfos) {
+            cout << "Found management segment, but cannot locate segment info, something went wrong..." << endl;
+            return;
+        }
+
+        for (const auto& s : *segmentInfos) {
+            if (s.second.fAllocationAlgorithm == AllocationAlgorithm::rbtree_best_fit) {
+                segments.emplace(s.first, RBTreeBestFitSegment(open_only, std::string("fmq_" + fShmId + "_m_" + to_string(s.first)).c_str()));
+            } else {
+                segments.emplace(s.first, SimpleSeqFitSegment(open_only, std::string("fmq_" + fShmId + "_m_" + to_string(s.first)).c_str()));
+            }
+        }
 
         fSeenOnce = true;
 
         unsigned int numDevices = 0;
+#ifdef FAIRMQ_DEBUG_MODE
+        Uint16MsgCounterHashMap* msgCounters = nullptr;
+#endif
 
         if (fInteractive || fViewOnly) {
-            DeviceCounter* dc = managementSegment.find<DeviceCounter>(bipc::unique_instance).first;
+            DeviceCounter* dc = managementSegment.find<DeviceCounter>(unique_instance).first;
             if (dc) {
                 numDevices = dc->fCount;
             }
+#ifdef FAIRMQ_DEBUG_MODE
+            msgCounters = managementSegment.find_or_construct<Uint16MsgCounterHashMap>(unique_instance)(allocInstance);
+#endif
         }
 
         auto now = chrono::high_resolution_clock::now();
@@ -305,35 +299,37 @@ void Monitor::CheckSegment()
             }
         }
 
-        if (fInteractive) {
+        if (fInteractive || fViewOnly) {
-            cout << "| "
+            stringstream ss;
-                 << setw(18) << fSegmentName                                    << " | "
+            size_t mfree = managementSegment.get_free_memory();
-                 << setw(10) << segment.get_size()                              << " | "
+            size_t mtotal = managementSegment.get_size();
-                 << setw(10) << segment.get_free_memory()                       << " | "
+            size_t mused = mtotal - mfree;
-                 << setw(8)  << numDevices                                      << " | "
+
-                 << setw(10) << (fViewOnly ? "view only" : to_string(duration)) << " |"
+            ss << "shm id: " << fShmId
-                 << c << flush;
+               << ", devices: " << numDevices << ", segments:\n";
-        } else if (fViewOnly) {
+            for (const auto& s : segments) {
-            size_t free = segment.get_free_memory();
+                size_t free = boost::apply_visitor(SegmentFreeMemory{}, s.second);
-            size_t total = segment.get_size();
+                size_t total = boost::apply_visitor(SegmentSize{}, s.second);
                 size_t used = total - free;
-            LOGV(info, user1) << "[" << fSegmentName
+                ss << "   [" << s.first
-                              << "] devices: " << numDevices
+                   << "]: total: " << total
-                              << ", total: " << total
+#ifdef FAIRMQ_DEBUG_MODE
+                   << ", msgs: " << (*msgCounters)[s.first].fCount
+#else
+                   << ", msgs: NODEBUG"
+#endif
                    << ", free: " << free
-                              << ", used: " << used;
+                   << ", used: " << used
+                   << "\n";
+            }
+            ss << "   [m]: "
+               << "total: " << mtotal
+               << ", free: " << mfree
+               << ", used: " << mused;
+            LOGV(info, user1) << ss.str();
         }
     } catch (bie&) {
         fHeartbeatTriggered = false;
-        if (fInteractive) {
-            cout << "| "
-                 << setw(18) << "-" << " | "
-                 << setw(10) << "-" << " | "
-                 << setw(10) << "-" << " | "
-                 << setw(8)  << "-" << " | "
-                 << setw(10) << "-" << " |"
-                 << c << flush;
-        }
 
         auto now = chrono::high_resolution_clock::now();
         unsigned int duration = chrono::duration_cast<chrono::milliseconds>(now - fLastHeartbeat).count();
@@ -356,172 +352,214 @@ void Monitor::CheckSegment()
     }
 }
 
-void Monitor::PrintQueues()
+void Monitor::PrintDebugInfo(const ShmId& shmId __attribute__((unused)))
 {
-    cout << '\n';
+#ifdef FAIRMQ_DEBUG_MODE
-
+    string managementSegmentName("fmq_" + shmId.shmId + "_mng");
     try {
-        bipc::managed_shared_memory segment(bipc::open_only, fSegmentName.c_str());
+        bipc::managed_shared_memory managementSegment(bipc::open_only, managementSegmentName.c_str());
-        StrVector* queues = segment.find<StrVector>(string("fmq_" + fShmId + "_qs").c_str()).first;
+        boost::interprocess::named_mutex mtx(boost::interprocess::open_only, string("fmq_" + shmId.shmId + "_mtx").c_str());
-        if (queues) {
+        boost::interprocess::scoped_lock<bipc::named_mutex> lock(mtx);
-            cout << "found " << queues->size() << " queue(s):" << endl;
 
-            for (const auto& queue : *queues) {
+        Uint16MsgDebugMapHashMap* debug = managementSegment.find<Uint16MsgDebugMapHashMap>(bipc::unique_instance).first;
-                string name(queue.c_str());
+
-                cout << '\t' << name << " : ";
+        size_t numMessages = 0;
-                atomic<int>* queueSize = segment.find<atomic<int>>(name.c_str()).first;
+
-                if (queueSize) {
+        for (const auto& e : *debug) {
-                    cout << *queueSize << " messages" << endl;
+            numMessages += e.second.size();
-                } else {
+        }
-                    cout << "\tqueue does not have a queue size entry." << endl;
+        cout << endl << "found " << numMessages << " messages." << endl;
+
+        for (const auto& s : *debug) {
+            for (const auto& e : s.second) {
+                using time_point = chrono::system_clock::time_point;
+                time_point tmpt{chrono::duration_cast<time_point::duration>(chrono::nanoseconds(e.second.fCreationTime))};
+                time_t t = chrono::system_clock::to_time_t(tmpt);
+                uint64_t ms = e.second.fCreationTime % 1000000;
+                auto tm = localtime(&t);
+                cout << "segment: " << setw(3) << setfill(' ') << s.first
+                     << ", offset: " << setw(12) << setfill(' ') << e.first
+                     << ", size: " << setw(10) << setfill(' ') << e.second.fSize
+                     << ", creator PID: " << e.second.fPid << setfill('0')
+                     << ", at: " << setw(2) << tm->tm_hour << ":" << setw(2) << tm->tm_min << ":" << setw(2) << tm->tm_sec << "." << setw(6) << ms << endl;
             }
         }
-        } else {
+        cout << setfill(' ');
-            cout << "\tno queues found" << endl;
-        }
     } catch (bie&) {
-        cout << "\tno queues found" << endl;
+        cout << "no segments found" << endl;
-    } catch (out_of_range&) {
-        cout << "\tno queues found" << endl;
     }
-
+#else
-    cout << "\n    --> last heartbeats: " << endl << endl;
+    cout << "FairMQ was not compiled in debug mode (FAIRMQ_DEBUG_MODE)" << endl;
-    auto now = chrono::high_resolution_clock::now();
+#endif
-    for (const auto& h : fDeviceHeartbeats)  {
-        cout << "\t" << h.first << " : " << chrono::duration<double, milli>(now - h.second).count() << "ms ago." << endl;
-    }
-
-    cout << endl;
 }
 
-void Monitor::PrintHeader()
+void Monitor::PrintDebugInfo(const SessionId& sessionId)
 {
-    cout << "| "
+    ShmId shmId{buildShmIdFromSessionIdAndUserId(sessionId.sessionId)};
-         << setw(18) << "name"    << " | "
+    PrintDebugInfo(shmId);
-         << setw(10) << "size"    << " | "
+}
-         << setw(10) << "free"    << " | "
+
-         << setw(8)  << "devices" << " | "
+unordered_map<uint16_t, std::vector<BufferDebugInfo>> Monitor::GetDebugInfo(const ShmId& shmId __attribute__((unused)))
-         << setw(10) << "last hb" << " |"
+{
-         << endl;
+    unordered_map<uint16_t, std::vector<BufferDebugInfo>> result;
+
+#ifdef FAIRMQ_DEBUG_MODE
+    string managementSegmentName("fmq_" + shmId.shmId + "_mng");
+    try {
+        bipc::managed_shared_memory managementSegment(bipc::open_only, managementSegmentName.c_str());
+        boost::interprocess::named_mutex mtx(boost::interprocess::open_only, string("fmq_" + shmId.shmId + "_mtx").c_str());
+        boost::interprocess::scoped_lock<bipc::named_mutex> lock(mtx);
+
+        Uint16MsgDebugMapHashMap* debug = managementSegment.find<Uint16MsgDebugMapHashMap>(bipc::unique_instance).first;
+
+        result.reserve(debug->size());
+
+        for (const auto& s : *debug) {
+            result[s.first].reserve(s.second.size());
+            for (const auto& e : s.second) {
+                result[s.first][e.first] = BufferDebugInfo(e.first, e.second.fPid, e.second.fSize, e.second.fCreationTime);
+            }
+        }
+    } catch (bie&) {
+        cout << "no segments found" << endl;
+    }
+#else
+    cout << "FairMQ was not compiled in debug mode (FAIRMQ_DEBUG_MODE)" << endl;
+#endif
+
+    return result;
+}
+unordered_map<uint16_t, std::vector<BufferDebugInfo>> Monitor::GetDebugInfo(const SessionId& sessionId)
+{
+    ShmId shmId{buildShmIdFromSessionIdAndUserId(sessionId.sessionId)};
+    return GetDebugInfo(shmId);
 }
 
 void Monitor::PrintHelp()
 {
-    cout << "controls: [x] close memory, [p] print queues, [h] help, [q] quit." << endl;
+    cout << "controls: [x] close memory, "
+         << "[b] print a list of allocated messages (only available when compiled with FAIMQ_DEBUG_MODE=ON), "
+         << "[h] help, "
+         << "[q] quit." << endl;
 }
 
-void Monitor::RemoveObject(const string& name)
+
+std::pair<std::string, bool> RunRemoval(std::function<bool(const std::string&)> f, std::string name, bool verbose)
 {
-    if (bipc::shared_memory_object::remove(name.c_str())) {
+    if (f(name)) {
+        if (verbose) {
             cout << "Successfully removed '" << name << "'." << endl;
+        }
+        return {name, true};
     } else {
+        if (verbose) {
             cout << "Did not remove '" << name << "'. Already removed?" << endl;
         }
+        return {name, false};
+    }
 }
 
-void Monitor::RemoveFileMapping(const string& name)
+bool Monitor::RemoveObject(const string& name)      { return bipc::shared_memory_object::remove(name.c_str()); }
-{
+bool Monitor::RemoveFileMapping(const string& name) { return bipc::file_mapping::remove(name.c_str()); }
-    if (bipc::file_mapping::remove(name.c_str())) {
+bool Monitor::RemoveQueue(const string& name)       { return bipc::message_queue::remove(name.c_str()); }
-        cout << "Successfully removed '" << name << "'." << endl;
+bool Monitor::RemoveMutex(const string& name)       { return bipc::named_mutex::remove(name.c_str()); }
-    } else {
+bool Monitor::RemoveCondition(const string& name)   { return bipc::named_condition::remove(name.c_str()); }
-        cout << "Did not remove '" << name << "'. Already removed?" << endl;
-    }
-}
 
-void Monitor::RemoveQueue(const string& name)
+std::vector<std::pair<std::string, bool>> Monitor::Cleanup(const ShmId& shmId, bool verbose /* = true */)
 {
-    if (bipc::message_queue::remove(name.c_str())) {
+    std::vector<std::pair<std::string, bool>> result;
-        cout << "Successfully removed '" << name << "'." << endl;
-    } else {
-        cout << "Did not remove '" << name << "'. Already removed?" << endl;
-    }
-}
 
-void Monitor::RemoveMutex(const string& name)
+    if (verbose) {
-{
-    if (bipc::named_mutex::remove(name.c_str())) {
-        cout << "Successfully removed '" << name << "'." << endl;
-    } else {
-        cout << "Did not remove '" << name << "'. Already removed?" << endl;
-    }
-}
-
-void Monitor::RemoveCondition(const string& name)
-{
-    if (bipc::named_condition::remove(name.c_str())) {
-        cout << "Successfully removed '" << name << "'." << endl;
-    } else {
-        cout << "Did not remove '" << name << "'. Already removed?" << endl;
-    }
-}
-
-void Monitor::Cleanup(const ShmId& shmId)
-{
         cout << "Cleaning up for shared memory id '" << shmId.shmId << "'..." << endl;
+    }
+
     string managementSegmentName("fmq_" + shmId.shmId + "_mng");
     try {
         bipc::managed_shared_memory managementSegment(bipc::open_only, managementSegmentName.c_str());
+
+        try {
             RegionCounter* rc = managementSegment.find<RegionCounter>(bipc::unique_instance).first;
             if (rc) {
+                if (verbose) {
                     cout << "Region counter found: " << rc->fCount << endl;
-            uint64_t regionCount = rc->fCount;
+                }
+                uint16_t regionCount = rc->fCount;
 
-            Uint64RegionInfoMap* m = managementSegment.find<Uint64RegionInfoMap>(bipc::unique_instance).first;
+                Uint16RegionInfoMap* m = managementSegment.find<Uint16RegionInfoMap>(bipc::unique_instance).first;
 
-            for (uint64_t i = 1; i <= regionCount; ++i) {
+                for (uint16_t i = 1; i <= regionCount; ++i) {
                     if (m != nullptr) {
                         RegionInfo ri = m->at(i);
                         string path = ri.fPath.c_str();
                         int flags = ri.fFlags;
+                        if (verbose) {
                             cout << "Found RegionInfo with path: '" << path << "', flags: " << flags << ", fDestroyed: " << ri.fDestroyed << "." << endl;
+                        }
                         if (path != "") {
-                        RemoveFileMapping(tools::ToString(path, "fmq_" + shmId.shmId + "_rg_" + to_string(i)));
+                            result.emplace_back(RunRemoval(Monitor::RemoveFileMapping, path + "fmq_" + shmId.shmId + "_rg_" + to_string(i), verbose));
                         } else {
-                        RemoveObject("fmq_" + shmId.shmId + "_rg_" + to_string(i));
+                            result.emplace_back(RunRemoval(Monitor::RemoveObject, "fmq_" + shmId.shmId + "_rg_" + to_string(i), verbose));
                         }
                     } else {
-                    RemoveObject("fmq_" + shmId.shmId + "_rg_" + to_string(i));
+                        result.emplace_back(RunRemoval(Monitor::RemoveObject, "fmq_" + shmId.shmId + "_rg_" + to_string(i), verbose));
                     }
 
-                RemoveQueue(string("fmq_" + shmId.shmId + "_rgq_" + to_string(i)));
+                    result.emplace_back(RunRemoval(Monitor::RemoveQueue, string("fmq_" + shmId.shmId + "_rgq_" + to_string(i)), verbose));
                 }
             } else {
+                if (verbose) {
                     cout << "No region counter found. No regions to cleanup." << endl;
                 }
-
+            }
-        RemoveObject(managementSegmentName.c_str());
-    } catch (bie&) {
-        cout << "Did not find '" << managementSegmentName << "' shared memory segment. No regions to cleanup." << endl;
         } catch(out_of_range& oor) {
+            if (verbose) {
                 cout << "Could not locate element in the region map, out of range: " << oor.what() << endl;
             }
+        }
 
-    RemoveObject("fmq_" + shmId.shmId + "_main");
+        Uint16SegmentInfoHashMap* segmentInfos = managementSegment.find<Uint16SegmentInfoHashMap>(bipc::unique_instance).first;
-    RemoveMutex("fmq_" + shmId.shmId + "_mtx");
-    RemoveCondition("fmq_" + shmId.shmId + "_cv");
 
-    cout << endl;
+        for (const auto& s : *segmentInfos) {
+            result.emplace_back(RunRemoval(Monitor::RemoveObject, "fmq_" + shmId.shmId + "_m_" + to_string(s.first), verbose));
+        }
+
+        result.emplace_back(RunRemoval(Monitor::RemoveObject, managementSegmentName.c_str(), verbose));
+    } catch (bie&) {
+        if (verbose) {
+            cout << "Did not find '" << managementSegmentName << "' shared memory segment. No regions to cleanup." << endl;
+        }
+    }
+
+    result.emplace_back(RunRemoval(Monitor::RemoveMutex, "fmq_" + shmId.shmId + "_mtx", verbose));
+    result.emplace_back(RunRemoval(Monitor::RemoveCondition, "fmq_" + shmId.shmId + "_cv", verbose));
+
+    return result;
 }
 
-void Monitor::Cleanup(const SessionId& sessionId)
+std::vector<std::pair<std::string, bool>> Monitor::Cleanup(const SessionId& sessionId, bool verbose /* = true */)
 {
     ShmId shmId{buildShmIdFromSessionIdAndUserId(sessionId.sessionId)};
+    if (verbose) {
         cout << "Cleanup called with session id '" << sessionId.sessionId << "', translating to shared memory id '" << shmId.shmId << "'" << endl;
-    Cleanup(shmId);
+    }
+    return Cleanup(shmId, verbose);
 }
 
-void Monitor::CleanupFull(const ShmId& shmId)
+std::vector<std::pair<std::string, bool>> Monitor::CleanupFull(const ShmId& shmId, bool verbose /* = true */)
 {
-    Cleanup(shmId);
+    auto result = Cleanup(shmId, verbose);
-    RemoveMutex("fmq_" + shmId.shmId + "_ms");
+    result.emplace_back(RunRemoval(Monitor::RemoveMutex, "fmq_" + shmId.shmId + "_ms", verbose));
-    RemoveQueue("fmq_" + shmId.shmId + "_cq");
+    result.emplace_back(RunRemoval(Monitor::RemoveQueue, "fmq_" + shmId.shmId + "_cq", verbose));
+    return result;
 }
 
-void Monitor::CleanupFull(const SessionId& sessionId)
+std::vector<std::pair<std::string, bool>> Monitor::CleanupFull(const SessionId& sessionId, bool verbose /* = true */)
 {
     ShmId shmId{buildShmIdFromSessionIdAndUserId(sessionId.sessionId)};
+    if (verbose) {
         cout << "Cleanup called with session id '" << sessionId.sessionId << "', translating to shared memory id '" << shmId.shmId << "'" << endl;
-    CleanupFull(shmId);
+    }
+    return CleanupFull(shmId, verbose);
 }
 
 Monitor::~Monitor()

fairmq/shmem/Monitor.h

@@ -14,6 +14,8 @@
 #include <string>
 #include <stdexcept>
 #include <unordered_map>
+#include <utility> // pair
+#include <vector>
 
 namespace fair
 {
@@ -34,6 +36,21 @@ struct ShmId
     explicit operator std::string() const { return shmId; }
 };
 
+struct BufferDebugInfo
+{
+    BufferDebugInfo(size_t offset, pid_t pid, size_t size, uint64_t creationTime)
+        : fOffset(offset)
+        , fPid(pid)
+        , fSize(size)
+        , fCreationTime(creationTime)
+    {}
+
+    size_t fOffset;
+    pid_t fPid;
+    size_t fSize;
+    uint64_t fCreationTime;
+};
+
 class Monitor
 {
   public:
@@ -49,29 +66,36 @@ class Monitor
 
     /// @brief Cleanup all shared memory artifacts created by devices
     /// @param shmId shared memory id
-    static void Cleanup(const ShmId& shmId);
+    /// @param verbose output cleanup results to stdout
+    static std::vector<std::pair<std::string, bool>> Cleanup(const ShmId& shmId, bool verbose = true);
     /// @brief Cleanup all shared memory artifacts created by devices
     /// @param sessionId session id
-    static void Cleanup(const SessionId& sessionId);
+    /// @param verbose output cleanup results to stdout
+    static std::vector<std::pair<std::string, bool>> Cleanup(const SessionId& sessionId, bool verbose = true);
     /// @brief Cleanup all shared memory artifacts created by devices and monitors
     /// @param shmId shared memory id
-    static void CleanupFull(const ShmId& shmId);
+    /// @param verbose output cleanup results to stdout
+    static std::vector<std::pair<std::string, bool>> CleanupFull(const ShmId& shmId, bool verbose = true);
     /// @brief Cleanup all shared memory artifacts created by devices and monitors
     /// @param sessionId session id
-    static void CleanupFull(const SessionId& sessionId);
+    /// @param verbose output cleanup results to stdout
+    static std::vector<std::pair<std::string, bool>> CleanupFull(const SessionId& sessionId, bool verbose = true);
 
-    static void RemoveObject(const std::string&);
+    static void PrintDebugInfo(const ShmId& shmId);
-    static void RemoveFileMapping(const std::string&);
+    static void PrintDebugInfo(const SessionId& shmId);
-    static void RemoveQueue(const std::string&);
+    static std::unordered_map<uint16_t, std::vector<BufferDebugInfo>> GetDebugInfo(const ShmId& shmId);
-    static void RemoveMutex(const std::string&);
+    static std::unordered_map<uint16_t, std::vector<BufferDebugInfo>> GetDebugInfo(const SessionId& shmId);
-    static void RemoveCondition(const std::string&);
+
+    static bool RemoveObject(const std::string& name);
+    static bool RemoveFileMapping(const std::string& name);
+    static bool RemoveQueue(const std::string& name);
+    static bool RemoveMutex(const std::string& name);
+    static bool RemoveCondition(const std::string& name);
 
     struct DaemonPresent : std::runtime_error { using std::runtime_error::runtime_error; };
 
   private:
-    void PrintHeader();
     void PrintHelp();
-    void PrintQueues();
     void MonitorHeartbeats();
     void CheckSegment();
     void Interactive();

fairmq/shmem/README.md

@@ -11,8 +11,8 @@ Devices track and cleanup shared memory on shutdown. For more information on the
 FairMQ Shared Memory currently uses the following names to register shared memory on the system:
 
 | name                        | info                                           | created by         | used by                        |
-| ------------------------- | ---------------------------------------------- | ------------------ | ------------------------------ |
+| --------------------------- | ---------------------------------------------- | ------------------ | ------------------------------ |
-| `fmq_<shmId>_main`        | main segment (user data)                       | one of the devices | devices                        |
+| `fmq_<shmId>_m_<segmentId>` | managed segment(s) (user data)                 | one of the devices | devices                        |
 | `fmq_<shmId>_mng`           | management segment (management data)           | one of the devices | devices                        |
 | `fmq_<shmId>_mtx`           | mutex                                          | one of the devices | devices                        |
 | `fmq_<shmId>_cv`            | condition variable                             | one of the devices | devices with unmanaged regions |

fairmq/shmem/Region.h

@@ -48,7 +48,7 @@ namespace shmem
 
 struct Region
 {
-    Region(const std::string& shmId, uint64_t id, uint64_t size, bool remote, RegionCallback callback, RegionBulkCallback bulkCallback, const std::string& path, int flags)
+    Region(const std::string& shmId, uint16_t id, uint64_t size, bool remote, RegionCallback callback, RegionBulkCallback bulkCallback, const std::string& path, int flags)
         : fRemote(remote)
         , fLinger(100)
         , fStop(false)

fairmq/shmem/Socket.h

@@ -130,7 +130,7 @@ class Socket final : public fair::mq::Socket
 
     bool ShouldRetry(int flags, int timeout, int& elapsed) const
     {
-        if (!fManager.Interrupted() && ((flags & ZMQ_DONTWAIT) == 0)) {
+        if ((flags & ZMQ_DONTWAIT) == 0) {
             if (timeout > 0) {
                 elapsed += fTimeout;
                 if (elapsed >= timeout) {
@@ -147,10 +147,10 @@ class Socket final : public fair::mq::Socket
     {
         if (zmq_errno() == ETERM) {
             LOG(debug) << "Terminating socket " << fId;
-            return -1;
+            return static_cast<int>(TransferResult::error);
         } else {
             LOG(error) << "Failed transfer on socket " << fId << ", reason: " << zmq_strerror(errno);
-            return -1;
+            return static_cast<int>(TransferResult::error);
         }
     }
 
@@ -166,7 +166,7 @@ class Socket final : public fair::mq::Socket
         ZMsg zmqMsg(sizeof(MetaHeader));
         std::memcpy(zmqMsg.Data(), &(shmMsg->fMeta), sizeof(MetaHeader));
 
-        while (true && !fManager.Interrupted()) {
+        while (true) {
             int nbytes = zmq_msg_send(zmqMsg.Msg(), fSocket, flags);
             if (nbytes > 0) {
                 shmMsg->fQueued = true;
@@ -175,17 +175,19 @@ class Socket final : public fair::mq::Socket
                 fBytesTx += size;
                 return size;
             } else if (zmq_errno() == EAGAIN || zmq_errno() == EINTR) {
-                if (ShouldRetry(flags, timeout, elapsed)) {
+                if (fManager.Interrupted()) {
+                    return static_cast<int>(TransferResult::interrupted);
+                } else if (ShouldRetry(flags, timeout, elapsed)) {
                     continue;
                 } else {
-                    return -2;
+                    return static_cast<int>(TransferResult::timeout);
                 }
             } else {
                 return HandleErrors();
             }
         }
 
-        return -1;
+        return static_cast<int>(TransferResult::error);
     }
 
     int Receive(MessagePtr& msg, const int timeout = -1) override
@@ -218,10 +220,12 @@ class Socket final : public fair::mq::Socket
                 ++fMessagesRx;
                 return size;
             } else if (zmq_errno() == EAGAIN || zmq_errno() == EINTR) {
-                if (ShouldRetry(flags, timeout, elapsed)) {
+                if (fManager.Interrupted()) {
+                    return static_cast<int>(TransferResult::interrupted);
+                } else if (ShouldRetry(flags, timeout, elapsed)) {
                     continue;
                 } else {
-                    return -2;
+                    return static_cast<int>(TransferResult::timeout);
                 }
             } else {
                 return HandleErrors();
@@ -249,7 +253,7 @@ class Socket final : public fair::mq::Socket
             std::memcpy(metas++, &(shmMsg->fMeta), sizeof(MetaHeader));
         }
 
-        while (!fManager.Interrupted()) {
+        while (true) {
             int64_t totalSize = 0;
             int nbytes = zmq_msg_send(zmqMsg.Msg(), fSocket, flags);
             if (nbytes > 0) {
@@ -267,17 +271,19 @@ class Socket final : public fair::mq::Socket
 
                 return totalSize;
             } else if (zmq_errno() == EAGAIN || zmq_errno() == EINTR) {
-                if (ShouldRetry(flags, timeout, elapsed)) {
+                if (fManager.Interrupted()) {
+                    return static_cast<int>(TransferResult::interrupted);
+                } else if (ShouldRetry(flags, timeout, elapsed)) {
                     continue;
                 } else {
-                    return -2;
+                    return static_cast<int>(TransferResult::timeout);
                 }
             } else {
                 return HandleErrors();
             }
         }
 
-        return -1;
+        return static_cast<int>(TransferResult::error);
     }
 
     int64_t Receive(std::vector<MessagePtr>& msgVec, const int timeout = -1) override
@@ -290,7 +296,7 @@ class Socket final : public fair::mq::Socket
 
         ZMsg zmqMsg;
 
-        while (!fManager.Interrupted()) {
+        while (true) {
             int64_t totalSize = 0;
             int nbytes = zmq_msg_recv(zmqMsg.Msg(), fSocket, flags);
             if (nbytes > 0) {
@@ -321,17 +327,19 @@ class Socket final : public fair::mq::Socket
 
                 return totalSize;
             } else if (zmq_errno() == EAGAIN || zmq_errno() == EINTR) {
-                if (ShouldRetry(flags, timeout, elapsed)) {
+                if (fManager.Interrupted()) {
+                    return static_cast<int>(TransferResult::interrupted);
+                } else if (ShouldRetry(flags, timeout, elapsed)) {
                     continue;
                 } else {
-                    return -2;
+                    return static_cast<int>(TransferResult::timeout);
                 }
             } else {
                 return HandleErrors();
             }
         }
 
-        return -1;
+        return static_cast<int>(TransferResult::error);
     }
 
     void* GetSocket() const { return fSocket; }
@@ -498,7 +506,7 @@ class Socket final : public fair::mq::Socket
         if (constant == "pollout")
             return ZMQ_POLLOUT;
 
-        return -1;
+        throw SocketError(tools::ToString("GetConstant called with an invalid argument: ", constant));
     }
 
     ~Socket() override { Close(); }

fairmq/shmem/TransportFactory.h

@@ -58,14 +58,21 @@ class TransportFactory final : public fair::mq::TransportFactory
         int numIoThreads = 1;
         std::string sessionName = "default";
         size_t segmentSize = 2ULL << 30;
+        std::string allocationAlgorithm("rbtree_best_fit");
         if (config) {
             numIoThreads = config->GetProperty<int>("io-threads", numIoThreads);
             sessionName = config->GetProperty<std::string>("session", sessionName);
             segmentSize = config->GetProperty<size_t>("shm-segment-size", segmentSize);
+            allocationAlgorithm = config->GetProperty<std::string>("shm-allocation", allocationAlgorithm);
         } else {
             LOG(debug) << "ProgOptions not available! Using defaults.";
         }
 
+        if (allocationAlgorithm != "rbtree_best_fit" && allocationAlgorithm != "simple_seq_fit") {
+            LOG(error) << "Provided shared memory allocation algorithm '" << allocationAlgorithm << "' is not supported. Supported are 'rbtree_best_fit'/'simple_seq_fit'";
+            throw SharedMemoryError(tools::ToString("Provided shared memory allocation algorithm '", allocationAlgorithm, "' is not supported. Supported are 'rbtree_best_fit'/'simple_seq_fit'"));
+        }
+
         fShmId = buildShmIdFromSessionIdAndUserId(sessionName);
         LOG(debug) << "Generated shmid '" << fShmId << "' out of session id '" << sessionName << "'.";
 

fairmq/shmem/UnmanagedRegion.h

@@ -56,7 +56,7 @@ class UnmanagedRegion final : public fair::mq::UnmanagedRegion
 
     void* GetData() const override { return fRegion->get_address(); }
     size_t GetSize() const override { return fRegion->get_size(); }
-    uint64_t GetId() const override { return fRegionId; }
+    uint16_t GetId() const override { return fRegionId; }
     void SetLinger(uint32_t linger) override { fManager.GetRegion(fRegionId)->SetLinger(linger); }
     uint32_t GetLinger() const override { return fManager.GetRegion(fRegionId)->GetLinger(); }
 
@@ -65,7 +65,7 @@ class UnmanagedRegion final : public fair::mq::UnmanagedRegion
   private:
     Manager& fManager;
     boost::interprocess::mapped_region* fRegion;
-    uint64_t fRegionId;
+    uint16_t fRegionId;
 };
 
 }

fairmq/shmem/runMonitor.cxx

@@ -78,6 +78,7 @@ int main(int argc, char** argv)
         unsigned int timeoutInMS = 5000;
         unsigned int intervalInMS = 100;
         bool runAsDaemon = false;
+        bool debug = false;
         bool cleanOnExit = false;
 
         options_description desc("Options");
@@ -90,6 +91,7 @@ int main(int argc, char** argv)
             ("view,v"         , value<bool>(&viewOnly)->implicit_value(true),           "Run in view only mode")
             ("timeout,t"      , value<unsigned int>(&timeoutInMS)->default_value(5000), "Heartbeat timeout in milliseconds")
             ("daemonize,d"    , value<bool>(&runAsDaemon)->implicit_value(true),        "Daemonize the monitor")
+            ("debug,b"        , value<bool>(&debug)->implicit_value(true),             "Debug - Print a list of messages)")
             ("clean-on-exit,e", value<bool>(&cleanOnExit)->implicit_value(true),        "Perform cleanup on exit")
             ("interval"       , value<unsigned int>(&intervalInMS)->default_value(100), "Output interval for interactive/view-only mode")
             ("help,h", "Print help");
@@ -117,6 +119,11 @@ int main(int argc, char** argv)
             return 0;
         }
 
+        if (debug) {
+            Monitor::PrintDebugInfo(ShmId{shmId});
+            return 0;
+        }
+
         cout << "Starting shared memory monitor for session: \"" << sessionName << "\" (shmId: " << shmId << ")..." << endl;
         if (viewOnly && !interactive) {
             cout << "running in non-interactive view-only mode, outputting with interval of " << intervalInMS << "ms. (change with --interval), press ctrl+C to exit." << endl;

fairmq/zeromq/Context.h

@@ -56,7 +56,7 @@ class Context
             throw ContextError(tools::ToString("failed configuring context, reason: ", zmq_strerror(errno)));
         }
 
-        fRegionEvents.emplace(0, nullptr, 0, 0, RegionEvent::local_only);
+        fRegionEvents.emplace(true, 0, nullptr, 0, 0, RegionEvent::local_only);
     }
 
     Context(const Context&) = delete;
@@ -114,24 +114,24 @@ class Context
         return fRegionInfos;
     }
 
-    uint64_t RegionCount() const
+    uint16_t RegionCount() const
     {
         std::lock_guard<std::mutex> lock(fMtx);
         return fRegionCounter;
     }
 
-    void AddRegion(uint64_t id, void* ptr, size_t size, int64_t userFlags, RegionEvent event)
+    void AddRegion(bool managed, uint16_t id, void* ptr, size_t size, int64_t userFlags, RegionEvent event)
     {
         {
             std::lock_guard<std::mutex> lock(fMtx);
             ++fRegionCounter;
-            fRegionInfos.emplace_back(id, ptr, size, userFlags, event);
+            fRegionInfos.emplace_back(managed, id, ptr, size, userFlags, event);
-            fRegionEvents.emplace(id, ptr, size, userFlags, event);
+            fRegionEvents.emplace(managed, id, ptr, size, userFlags, event);
         }
         fRegionEventsCV.notify_one();
     }
 
-    void RemoveRegion(uint64_t id)
+    void RemoveRegion(uint16_t id)
     {
         {
             std::lock_guard<std::mutex> lock(fMtx);
@@ -182,7 +182,7 @@ class Context
     mutable std::mutex fMtx;
     std::atomic<bool> fInterrupted;
 
-    uint64_t fRegionCounter;
+    uint16_t fRegionCounter;
     std::condition_variable fRegionEventsCV;
     std::vector<RegionInfo> fRegionInfos;
     std::queue<RegionInfo> fRegionEvents;

fairmq/zeromq/Socket.h

@@ -108,7 +108,7 @@ class Socket final : public fair::mq::Socket
 
     bool ShouldRetry(int flags, int timeout, int& elapsed) const
     {
-        if (!fCtx.Interrupted() && ((flags & ZMQ_DONTWAIT) == 0)) {
+        if ((flags & ZMQ_DONTWAIT) == 0) {
             if (timeout > 0) {
                 elapsed += fTimeout;
                 if (elapsed >= timeout) {
@@ -125,10 +125,10 @@ class Socket final : public fair::mq::Socket
     {
         if (zmq_errno() == ETERM) {
             LOG(debug) << "Terminating socket " << fId;
-            return -1;
+            return static_cast<int>(TransferResult::error);
         } else {
             LOG(error) << "Failed transfer on socket " << fId << ", errno: " << errno << ", reason: " << zmq_strerror(errno);
-            return -1;
+            return static_cast<int>(TransferResult::error);
         }
     }
 
@@ -149,10 +149,12 @@ class Socket final : public fair::mq::Socket
                 ++fMessagesTx;
                 return nbytes;
             } else if (zmq_errno() == EAGAIN || zmq_errno() == EINTR) {
-                if (ShouldRetry(flags, timeout, elapsed)) {
+                if (fCtx.Interrupted()) {
+                    return static_cast<int>(TransferResult::interrupted);
+                } else if (ShouldRetry(flags, timeout, elapsed)) {
                     continue;
                 } else {
-                    return -2;
+                    return static_cast<int>(TransferResult::timeout);
                 }
             } else {
                 return HandleErrors();
@@ -175,10 +177,12 @@ class Socket final : public fair::mq::Socket
                 ++fMessagesRx;
                 return nbytes;
             } else if (zmq_errno() == EAGAIN || zmq_errno() == EINTR) {
-                if (ShouldRetry(flags, timeout, elapsed)) {
+                if (fCtx.Interrupted()) {
+                    return static_cast<int>(TransferResult::interrupted);
+                } else if (ShouldRetry(flags, timeout, elapsed)) {
                     continue;
                 } else {
-                    return -2;
+                    return static_cast<int>(TransferResult::timeout);
                 }
             } else {
                 return HandleErrors();
@@ -210,11 +214,13 @@ class Socket final : public fair::mq::Socket
                     if (nbytes >= 0) {
                         totalSize += nbytes;
                     } else if (zmq_errno() == EAGAIN || zmq_errno() == EINTR) {
-                        if (ShouldRetry(flags, timeout, elapsed)) {
+                        if (fCtx.Interrupted()) {
+                            return static_cast<int>(TransferResult::interrupted);
+                        } else if (ShouldRetry(flags, timeout, elapsed)) {
                             repeat = true;
                             break;
                         } else {
-                            return -2;
+                            return static_cast<int>(TransferResult::timeout);
                         }
                     } else {
                         return HandleErrors();
@@ -234,7 +240,7 @@ class Socket final : public fair::mq::Socket
             return Send(msgVec.back(), timeout);
         } else { // if the vector is empty, something might be wrong
             LOG(warn) << "Will not send empty vector";
-            return -1;
+            return static_cast<int>(TransferResult::error);
         }
     }
 
@@ -259,11 +265,13 @@ class Socket final : public fair::mq::Socket
                     msgVec.push_back(move(part));
                     totalSize += nbytes;
                 } else if (zmq_errno() == EAGAIN || zmq_errno() == EINTR) {
-                    if (ShouldRetry(flags, timeout, elapsed)) {
+                    if (fCtx.Interrupted()) {
+                        return static_cast<int>(TransferResult::interrupted);
+                    } else if (ShouldRetry(flags, timeout, elapsed)) {
                         repeat = true;
                         break;
                     } else {
-                        return -2;
+                        return static_cast<int>(TransferResult::timeout);
                     }
                 } else {
                     return HandleErrors();
@@ -446,7 +454,7 @@ class Socket final : public fair::mq::Socket
         if (constant == "pollout")
             return ZMQ_POLLOUT;
 
-        return -1;
+        throw SocketError(tools::ToString("GetConstant called with an invalid argument: ", constant));
     }
 
     ~Socket() override { Close(); }

fairmq/zeromq/TransportFactory.h

@@ -125,7 +125,7 @@ class TransportFactory final : public FairMQTransportFactory
     {
         UnmanagedRegionPtr ptr = tools::make_unique<UnmanagedRegion>(*fCtx, size, userFlags, callback, bulkCallback, this);
         auto zPtr = static_cast<UnmanagedRegion*>(ptr.get());
-        fCtx->AddRegion(zPtr->GetId(), zPtr->GetData(), zPtr->GetSize(), zPtr->GetUserFlags(), RegionEvent::created);
+        fCtx->AddRegion(false, zPtr->GetId(), zPtr->GetData(), zPtr->GetSize(), zPtr->GetUserFlags(), RegionEvent::created);
         return ptr;
     }
 

fairmq/zeromq/UnmanagedRegion.h

@@ -50,7 +50,7 @@ class UnmanagedRegion final : public fair::mq::UnmanagedRegion
 
     virtual void* GetData() const override { return fBuffer; }
     virtual size_t GetSize() const override { return fSize; }
-    uint64_t GetId() const override { return fId; }
+    uint16_t GetId() const override { return fId; }
     int64_t GetUserFlags() const { return fUserFlags; }
     void SetLinger(uint32_t /* linger */) override { LOG(debug) << "ZeroMQ UnmanagedRegion linger option not implemented. Acknowledgements are local."; }
     uint32_t GetLinger() const override { LOG(debug) << "ZeroMQ UnmanagedRegion linger option not implemented. Acknowledgements are local."; return 0; }
@@ -64,7 +64,7 @@ class UnmanagedRegion final : public fair::mq::UnmanagedRegion
 
   private:
     Context& fCtx;
-    uint64_t fId;
+    uint16_t fId;
     void* fBuffer;
     size_t fSize;
     int64_t fUserFlags;

test/CMakeLists.txt

@@ -12,6 +12,18 @@ include(GTestHelper)
 # FairMQ Testsuites/helpers #
 #############################
 
+if(FairLogger_VERSION VERSION_LESS 1.9.0 AND FairLogger_VERSION VERSION_GREATER_EQUAL 1.7.0)
+  LIST(APPEND definitions FAIR_MIN_SEVERITY=trace)
+endif()
+
+if(BUILD_OFI_TRANSPORT)
+  LIST(APPEND definitions BUILD_OFI_TRANSPORT)
+endif()
+
+if(definitions)
+  set(definitions DEFINITIONS ${definitions})
+endif()
+
 add_testhelper(runTestDevice
     SOURCES
     helper/runTestDevice.cxx
@@ -30,16 +42,9 @@ add_testhelper(runTestDevice
     helper/devices/TestExceptions.h
 
     LINKS FairMQ
+    ${definitions}
 )
 
-if(BUILD_OFI_TRANSPORT)
-  LIST(APPEND definitions BUILD_OFI_TRANSPORT)
-endif()
-
-if(definitions)
-  set(definitions DEFINITIONS ${definitions})
-endif()
-
 set(MQ_CONFIG "${CMAKE_BINARY_DIR}/test/testsuite_FairMQ.IOPatterns_config.json")
 set(RUN_TEST_DEVICE "${CMAKE_BINARY_DIR}/test/testhelper_runTestDevice")
 set(FAIRMQ_BIN_DIR ${CMAKE_BINARY_DIR}/fairmq)

test/commands/_commands.cxx

@@ -31,7 +31,7 @@ TEST(Format, Construction)
     Cmds setPropertiesCmds(make<SetProperties>(42, props));
     Cmds subscriptionHeartbeatCmds(make<SubscriptionHeartbeat>(60000));
     Cmds currentStateCmds(make<CurrentState>("somedeviceid", State::Running));
-    Cmds transitionStatusCmds(make<TransitionStatus>("somedeviceid", 123456, Result::Ok, Transition::Stop));
+    Cmds transitionStatusCmds(make<TransitionStatus>("somedeviceid", 123456, Result::Ok, Transition::Stop, State::Running));
     Cmds configCmds(make<Config>("somedeviceid", "someconfig"));
     Cmds stateChangeSubscriptionCmds(make<StateChangeSubscription>("somedeviceid", 123456, Result::Ok));
     Cmds stateChangeUnsubscriptionCmds(make<StateChangeUnsubscription>("somedeviceid", 123456, Result::Ok));
@@ -63,6 +63,7 @@ TEST(Format, Construction)
     ASSERT_EQ(static_cast<TransitionStatus&>(transitionStatusCmds.At(0)).GetTaskId(), 123456);
     ASSERT_EQ(static_cast<TransitionStatus&>(transitionStatusCmds.At(0)).GetResult(), Result::Ok);
     ASSERT_EQ(static_cast<TransitionStatus&>(transitionStatusCmds.At(0)).GetTransition(), Transition::Stop);
+    ASSERT_EQ(static_cast<TransitionStatus&>(transitionStatusCmds.At(0)).GetCurrentState(), State::Running);
     ASSERT_EQ(configCmds.At(0).GetType(), Type::config);
     ASSERT_EQ(static_cast<Config&>(configCmds.At(0)).GetDeviceId(), "somedeviceid");
     ASSERT_EQ(static_cast<Config&>(configCmds.At(0)).GetConfig(), "someconfig");
@@ -104,7 +105,7 @@ void fillCommands(Cmds& cmds)
     cmds.Add<SetProperties>(42, props);
     cmds.Add<SubscriptionHeartbeat>(60000);
     cmds.Add<CurrentState>("somedeviceid", State::Running);
-    cmds.Add<TransitionStatus>("somedeviceid", 123456, Result::Ok, Transition::Stop);
+    cmds.Add<TransitionStatus>("somedeviceid", 123456, Result::Ok, Transition::Stop, State::Running);
     cmds.Add<Config>("somedeviceid", "someconfig");
     cmds.Add<StateChangeSubscription>("somedeviceid", 123456, Result::Ok);
     cmds.Add<StateChangeUnsubscription>("somedeviceid", 123456, Result::Ok);
@@ -167,6 +168,7 @@ void checkCommands(Cmds& cmds)
                 ASSERT_EQ(static_cast<TransitionStatus&>(*cmd).GetTaskId(), 123456);
                 ASSERT_EQ(static_cast<TransitionStatus&>(*cmd).GetResult(), Result::Ok);
                 ASSERT_EQ(static_cast<TransitionStatus&>(*cmd).GetTransition(), Transition::Stop);
+                ASSERT_EQ(static_cast<TransitionStatus&>(*cmd).GetCurrentState(), State::Running);
             break;
             case Type::config:
                 ++count;

test/helper/devices/TestTransferTimeout.h

@@ -1,5 +1,5 @@
 /********************************************************************************
- * Copyright (C) 2015-2017 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH  *
+ * Copyright (C) 2015static_cast<int>(TransferResult::timeout017 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH ) *
  *                                                                              *
  *              This software is distributed under the terms of the             *
  *              GNU Lesser General Public Licence (LGPL) version 3,             *
@@ -24,20 +24,20 @@ class TransferTimeout : public FairMQDevice
   protected:
     auto Run() -> void override
     {
-        bool sendMsgCancelingAfter100ms = false;
+        bool sendMsgCancelingAfter200ms = false;
-        bool receiveMsgCancelingAfter100ms = false;
+        bool receiveMsgCancelingAfter200ms = false;
 
         bool sendMsgCancelingAfter0ms = false;
         bool receiveMsgCancelingAfter0ms = false;
 
-        bool send1PartCancelingAfter100ms = false;
+        bool send1PartCancelingAfter200ms = false;
-        bool receive1PartCancelingAfter100ms = false;
+        bool receive1PartCancelingAfter200ms = false;
 
         bool send1PartCancelingAfter0ms = false;
         bool receive1PartCancelingAfter0ms = false;
 
-        bool send2PartsCancelingAfter100ms = false;
+        bool send2PartsCancelingAfter200ms = false;
-        bool receive2PartsCancelingAfter100ms = false;
+        bool receive2PartsCancelingAfter200ms = false;
 
         bool send2PartsCancelingAfter0ms = false;
         bool receive2PartsCancelingAfter0ms = false;
@@ -45,28 +45,28 @@ class TransferTimeout : public FairMQDevice
         FairMQMessagePtr msg1(NewMessage());
         FairMQMessagePtr msg2(NewMessage());
 
-        if (Send(msg1, "data-out", 0, 100) == -2) {
+        if (Send(msg1, "data-out", 0, 200) == static_cast<int>(TransferResult::timeout)) {
-            LOG(info) << "send msg canceled (100ms)";
+            LOG(info) << "send msg canceled (200ms)";
-            sendMsgCancelingAfter100ms = true;
+            sendMsgCancelingAfter200ms = true;
         } else {
-            LOG(error) << "send msg did not cancel (100ms)";
+            LOG(error) << "send msg did not cancel (200ms)";
         }
 
-        if (Receive(msg2, "data-in", 0, 100) == -2) {
+        if (Receive(msg2, "data-in", 0, 200) == static_cast<int>(TransferResult::timeout)) {
-            LOG(info) << "receive msg canceled (100ms)";
+            LOG(info) << "receive msg canceled (200ms)";
-            receiveMsgCancelingAfter100ms = true;
+            receiveMsgCancelingAfter200ms = true;
         } else {
-            LOG(error) << "receive msg did not cancel (100ms)";
+            LOG(error) << "receive msg did not cancel (200ms)";
         }
 
-        if (Send(msg1, "data-out", 0, 0) == -2) {
+        if (Send(msg1, "data-out", 0, 0) == static_cast<int>(TransferResult::timeout)) {
             LOG(info) << "send msg canceled (0ms)";
             sendMsgCancelingAfter0ms = true;
         } else {
             LOG(error) << "send msg did not cancel (0ms)";
         }
 
-        if (Receive(msg2, "data-in", 0, 0) == -2) {
+        if (Receive(msg2, "data-in", 0, 0) == static_cast<int>(TransferResult::timeout)) {
             LOG(info) << "receive msg canceled (0ms)";
             receiveMsgCancelingAfter0ms = true;
         } else {
@@ -77,28 +77,28 @@ class TransferTimeout : public FairMQDevice
         parts1.AddPart(NewMessage(10));
         FairMQParts parts2;
 
-        if (Send(parts1, "data-out", 0, 100) == -2) {
+        if (Send(parts1, "data-out", 0, 200) == static_cast<int>(TransferResult::timeout)) {
-            LOG(info) << "send 1 part canceled (100ms)";
+            LOG(info) << "send 1 part canceled (200ms)";
-            send1PartCancelingAfter100ms = true;
+            send1PartCancelingAfter200ms = true;
         } else {
-            LOG(error) << "send 1 part did not cancel (100ms)";
+            LOG(error) << "send 1 part did not cancel (200ms)";
         }
 
-        if (Receive(parts2, "data-in", 0, 100) == -2) {
+        if (Receive(parts2, "data-in", 0, 200) == static_cast<int>(TransferResult::timeout)) {
-            LOG(info) << "receive 1 part canceled (100ms)";
+            LOG(info) << "receive 1 part canceled (200ms)";
-            receive1PartCancelingAfter100ms = true;
+            receive1PartCancelingAfter200ms = true;
         } else {
-            LOG(error) << "receive 1 part did not cancel (100ms)";
+            LOG(error) << "receive 1 part did not cancel (200ms)";
         }
 
-        if (Send(parts1, "data-out", 0, 0) == -2) {
+        if (Send(parts1, "data-out", 0, 0) == static_cast<int>(TransferResult::timeout)) {
             LOG(info) << "send 1 part canceled (0ms)";
             send1PartCancelingAfter0ms = true;
         } else {
             LOG(error) << "send 1 part did not cancel (0ms)";
         }
 
-        if (Receive(parts2, "data-in", 0, 0) == -2) {
+        if (Receive(parts2, "data-in", 0, 0) == static_cast<int>(TransferResult::timeout)) {
             LOG(info) << "receive 1 part canceled (0ms)";
             receive1PartCancelingAfter0ms = true;
         } else {
@@ -110,44 +110,44 @@ class TransferTimeout : public FairMQDevice
         parts3.AddPart(NewMessage(10));
         FairMQParts parts4;
 
-        if (Send(parts3, "data-out", 0, 100) == -2) {
+        if (Send(parts3, "data-out", 0, 200) == static_cast<int>(TransferResult::timeout)) {
-            LOG(info) << "send 2 parts canceled (100ms)";
+            LOG(info) << "send 2 parts canceled (200ms)";
-            send2PartsCancelingAfter100ms = true;
+            send2PartsCancelingAfter200ms = true;
         } else {
-            LOG(error) << "send 2 parts did not cancel (100ms)";
+            LOG(error) << "send 2 parts did not cancel (200ms)";
         }
 
-        if (Receive(parts4, "data-in", 0, 100) == -2) {
+        if (Receive(parts4, "data-in", 0, 200) == static_cast<int>(TransferResult::timeout)) {
-            LOG(info) << "receive 2 parts canceled (100ms)";
+            LOG(info) << "receive 2 parts canceled (200ms)";
-            receive2PartsCancelingAfter100ms = true;
+            receive2PartsCancelingAfter200ms = true;
         } else {
-            LOG(error) << "receive 2 parts did not cancel (100ms)";
+            LOG(error) << "receive 2 parts did not cancel (200ms)";
         }
 
-        if (Send(parts3, "data-out", 0, 0) == -2) {
+        if (Send(parts3, "data-out", 0, 0) == static_cast<int>(TransferResult::timeout)) {
             LOG(info) << "send 2 parts canceled (0ms)";
             send2PartsCancelingAfter0ms = true;
         } else {
             LOG(error) << "send 2 parts did not cancel (0ms)";
         }
 
-        if (Receive(parts4, "data-in", 0, 0) == -2) {
+        if (Receive(parts4, "data-in", 0, 0) == static_cast<int>(TransferResult::timeout)) {
             LOG(info) << "receive 2 parts canceled (0ms)";
             receive2PartsCancelingAfter0ms = true;
         } else {
             LOG(error) << "receive 2 parts did not cancel (0ms)";
         }
 
-        if (sendMsgCancelingAfter100ms &&
+        if (sendMsgCancelingAfter200ms &&
-            receiveMsgCancelingAfter100ms &&
+            receiveMsgCancelingAfter200ms &&
             sendMsgCancelingAfter0ms &&
             receiveMsgCancelingAfter0ms &&
-            send1PartCancelingAfter100ms &&
+            send1PartCancelingAfter200ms &&
-            receive1PartCancelingAfter100ms &&
+            receive1PartCancelingAfter200ms &&
             send1PartCancelingAfter0ms &&
             receive1PartCancelingAfter0ms &&
-            send2PartsCancelingAfter100ms &&
+            send2PartsCancelingAfter200ms &&
-            receive2PartsCancelingAfter100ms &&
+            receive2PartsCancelingAfter200ms &&
             send2PartsCancelingAfter0ms &&
             receive2PartsCancelingAfter0ms)
         {

test/memory_resources/_memory_resources.cxx

@@ -6,66 +6,83 @@
  *                  copied verbatim in the file "LICENSE"                       *
  ********************************************************************************/
 
-#include <cstring>
 #include <fairmq/FairMQTransportFactory.h>
 #include <fairmq/MemoryResourceTools.h>
+#include <fairmq/ProgOptions.h>
+#include <fairmq/Tools.h>
+
+#include <boost/container/pmr/polymorphic_allocator.hpp>
+
 #include <gtest/gtest.h>
+
+#include <cstring>
 #include <vector>
 
-namespace {
+namespace
+{
 
 using namespace std;
 using namespace fair::mq;
-using factoryType = std::shared_ptr<FairMQTransportFactory>;
 
-factoryType factoryZMQ = FairMQTransportFactory::CreateTransportFactory("zeromq");
+using FactoryType = shared_ptr<FairMQTransportFactory>;
-factoryType factorySHM = FairMQTransportFactory::CreateTransportFactory("shmem");
 
-struct testData
+struct TestData
 {
     int i{1};
     static int nallocated;
     static int nallocations;
     static int ndeallocations;
-    testData()
+
+    TestData()
     {
         ++nallocated;
         ++nallocations;
     }
-    testData(const testData& in)
+
+    TestData(const TestData& in)
         : i{in.i}
     {
         ++nallocated;
         ++nallocations;
     }
-    testData(const testData&& in)
+
+    TestData(const TestData&& in)
         : i{in.i}
     {
         ++nallocated;
         ++nallocations;
     }
-    testData(int in)
+
+    TestData(int in)
         : i{in}
     {
         ++nallocated;
         ++nallocations;
     }
-    ~testData()
+
+    ~TestData()
     {
         --nallocated;
         ++ndeallocations;
     }
 };
 
-int testData::nallocated = 0;
+int TestData::nallocated = 0;
-int testData::nallocations = 0;
+int TestData::nallocations = 0;
-int testData::ndeallocations = 0;
+int TestData::ndeallocations = 0;
 
-auto allocZMQ = factoryZMQ -> GetMemoryResource();
+TEST(MemoryResources, transportAllocatorMap)
-auto allocSHM = factorySHM -> GetMemoryResource();
-
-TEST(MemoryResources, transportallocatormap)
 {
+    size_t session{tools::UuidHash()};
+    ProgOptions config;
+    config.SetProperty<string>("session", to_string(session));
+
+    FactoryType factoryZMQ = FairMQTransportFactory::CreateTransportFactory("zeromq", fair::mq::tools::Uuid(), &config);
+    FactoryType factorySHM = FairMQTransportFactory::CreateTransportFactory("shmem", fair::mq::tools::Uuid(), &config);
+
+    auto allocZMQ = factoryZMQ->GetMemoryResource();
+    auto allocSHM = factorySHM->GetMemoryResource();
+
     EXPECT_TRUE(allocZMQ != nullptr && allocSHM != allocZMQ);
     auto _tmp = factoryZMQ->GetMemoryResource();
     EXPECT_TRUE(_tmp == allocZMQ);
@@ -75,29 +92,45 @@ using namespace fair::mq::pmr;
 
 TEST(MemoryResources, allocator)
 {
-    testData::nallocations = 0;
+    TestData::nallocations = 0;
-    testData::ndeallocations = 0;
+    TestData::ndeallocations = 0;
+
+    size_t session{tools::UuidHash()};
+    ProgOptions config;
+    config.SetProperty<string>("session", to_string(session));
+
+    FactoryType factoryZMQ = FairMQTransportFactory::CreateTransportFactory("zeromq", fair::mq::tools::Uuid(), &config);
+
+    auto allocZMQ = factoryZMQ->GetMemoryResource();
 
     {
-        std::vector<testData, polymorphic_allocator<testData>> v(
+        std::vector<TestData, polymorphic_allocator<TestData>> v(polymorphic_allocator<TestData>{allocZMQ});
-            polymorphic_allocator<testData>{allocZMQ});
         v.reserve(3);
         EXPECT_TRUE(v.capacity() == 3);
         EXPECT_TRUE(allocZMQ->getNumberOfMessages() == 1);
         v.emplace_back(1);
         v.emplace_back(2);
         v.emplace_back(3);
-        EXPECT_TRUE((fair::mq::byte*)&(*v.end()) - (fair::mq::byte*)&(*v.begin()) == 3 * sizeof(testData));
+        EXPECT_TRUE((fair::mq::byte*)&(*v.end()) - (fair::mq::byte*)&(*v.begin()) == 3 * sizeof(TestData));
-        EXPECT_TRUE(testData::nallocated == 3);
+        EXPECT_TRUE(TestData::nallocated == 3);
     }
-    EXPECT_TRUE(testData::nallocated == 0);
+    EXPECT_TRUE(TestData::nallocated == 0);
-    EXPECT_TRUE(testData::nallocations == testData::ndeallocations);
+    EXPECT_TRUE(TestData::nallocations == TestData::ndeallocations);
 }
 
 TEST(MemoryResources, getMessage)
 {
-    testData::nallocations = 0;
+    TestData::nallocations = 0;
-    testData::ndeallocations = 0;
+    TestData::ndeallocations = 0;
+
+    size_t session{tools::UuidHash()};
+    ProgOptions config;
+    config.SetProperty<string>("session", to_string(session));
+
+    FactoryType factoryZMQ = FairMQTransportFactory::CreateTransportFactory("zeromq", fair::mq::tools::Uuid(), &config);
+    FactoryType factorySHM = FairMQTransportFactory::CreateTransportFactory("shmem", fair::mq::tools::Uuid(), &config);
+
+    auto allocZMQ = factoryZMQ->GetMemoryResource();
 
     FairMQMessagePtr message{nullptr};
 
@@ -105,8 +138,7 @@ TEST(MemoryResources, getMessage)
 
     // test message creation on the same channel it was allocated with
     {
-        std::vector<testData, polymorphic_allocator<testData>> v(
+        std::vector<TestData, polymorphic_allocator<TestData>> v(polymorphic_allocator<TestData>{allocZMQ});
-            polymorphic_allocator<testData>{allocZMQ});
         v.emplace_back(1);
         v.emplace_back(2);
         v.emplace_back(3);
@@ -115,14 +147,13 @@ TEST(MemoryResources, getMessage)
         EXPECT_TRUE(message != nullptr);
         EXPECT_TRUE(message->GetData() == vectorBeginPtr);
     }
-    EXPECT_TRUE(message->GetSize() == 3 * sizeof(testData));
+    EXPECT_TRUE(message->GetSize() == 3 * sizeof(TestData));
     messageArray = static_cast<int*>(message->GetData());
     EXPECT_TRUE(messageArray[0] == 1 && messageArray[1] == 2 && messageArray[2] == 3);
 
     // test message creation on a different channel than it was allocated with
     {
-        std::vector<testData, polymorphic_allocator<testData>> v(
+        std::vector<TestData, polymorphic_allocator<TestData>> v(polymorphic_allocator<TestData>{allocZMQ});
-            polymorphic_allocator<testData>{allocZMQ});
         v.emplace_back(4);
         v.emplace_back(5);
         v.emplace_back(6);
@@ -132,7 +163,7 @@ TEST(MemoryResources, getMessage)
         EXPECT_TRUE(message->GetData() != vectorBeginPtr);
     }
 
-    EXPECT_TRUE(message->GetSize() == 3 * sizeof(testData));
+    EXPECT_TRUE(message->GetSize() == 3 * sizeof(TestData));
     messageArray = static_cast<int*>(message->GetData());
     EXPECT_TRUE(messageArray[0] == 4 && messageArray[1] == 5 && messageArray[2] == 6);
 }

test/region/_region.cxx

@@ -48,6 +48,7 @@ void RegionEventSubscriptions(const string& transport)
         ASSERT_EQ(factory->SubscribedToRegionEvents(), false);
         factory->SubscribeToRegionEvents([&](FairMQRegionInfo info) {
             LOG(warn) << ">>>" << info.event;
+            LOG(warn) << "managed: " << info.managed;
             LOG(warn) << "id: " << info.id;
             LOG(warn) << "ptr: " << info.ptr;
             LOG(warn) << "size: " << info.size;

test/sdk/_topology.cxx

@@ -361,7 +361,7 @@ TEST_F(Topology, AsyncSetPropertiesTimeout)
 
     topo.AsyncSetProperties({{"key1", "val1"}},
                             "",
-                            std::chrono::milliseconds(1),
+                            std::chrono::microseconds(1),
                             [=](std::error_code ec, sdk::FailedDevices) mutable {
                                 LOG(info) << ec;
                                 EXPECT_EQ(ec, MakeErrorCode(ErrorCode::OperationTimeout));

test/transport/_transfer_timeout.cxx

@@ -7,9 +7,16 @@
  ********************************************************************************/
 
 #include "runner.h"
+#include <FairMQChannel.h>
+#include <FairMQLogger.h>
+#include <FairMQTransportFactory.h>
+#include <fairmq/ProgOptions.h>
 #include <fairmq/Tools.h>
 #include <gtest/gtest.h>
+
+#include <chrono>
 #include <sstream> // std::stringstream
+#include <thread>
 
 namespace
 {
@@ -18,6 +25,12 @@ using namespace std;
 using namespace fair::mq::test;
 using namespace fair::mq::tools;
 
+void delayedInterruptor(FairMQTransportFactory& transport)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    transport.Interrupt();
+}
+
 auto RunTransferTimeout(string transport) -> void
 {
     size_t session{fair::mq::tools::UuidHash()};
@@ -31,6 +44,28 @@ auto RunTransferTimeout(string transport) -> void
     exit(res.exit_code);
 }
 
+void InterruptTransfer(const string& transport, const string& _address)
+{
+    size_t session{fair::mq::tools::UuidHash()};
+    std::string address(fair::mq::tools::ToString(_address, "_", transport));
+
+    fair::mq::ProgOptions config;
+    config.SetProperty<string>("session", to_string(session));
+
+    auto factory = FairMQTransportFactory::CreateTransportFactory(transport, fair::mq::tools::Uuid(), &config);
+
+    FairMQChannel pull{"Pull", "pull", factory};
+    pull.Bind(address);
+
+    FairMQMessagePtr msg(pull.NewMessage());
+
+    auto t = thread(delayedInterruptor, ref(*factory));
+
+    auto result = pull.Receive(msg);
+    t.join();
+    ASSERT_EQ(result, static_cast<int>(fair::mq::TransferResult::interrupted));
+}
+
 TEST(TransferTimeout, zeromq)
 {
     EXPECT_EXIT(RunTransferTimeout("zeromq"), ::testing::ExitedWithCode(0), "Transfer timeout test successfull");
@@ -41,4 +76,14 @@ TEST(TransferTimeout, shmem)
     EXPECT_EXIT(RunTransferTimeout("shmem"), ::testing::ExitedWithCode(0), "Transfer timeout test successfull");
 }
 
+TEST(InterruptTransfer, zeromq)
+{
+    InterruptTransfer("zeromq", "ipc://test_interrupt_transfer");
+}
+
+TEST(InterruptTransfer, shmem)
+{
+    InterruptTransfer("shmem", "ipc://test_interrupt_transfer");
+}
+
 } // namespace