[19247] Improve performance on intraprocess + data-sharing (backport #3743)

src/cpp/rtps/reader/StatefulReader.cpp

@@ -43,18 +43,12 @@
 
 using namespace eprosima::fastrtps::rtps;
 
-static void send_ack_if_datasharing(
+static void send_datasharing_ack(
         StatefulReader* reader,
         ReaderHistory* history,
         WriterProxy* writer,
         const SequenceNumber_t& sequence_number)
 {
-    // If not datasharing, we are done
-    if (!writer || !writer->is_datasharing_writer())
-    {
-        return;
-    }
-
     // This may not be the change read with highest SN,
     // need to find largest SN to ACK
     for (std::vector<CacheChange_t*>::iterator it = history->changesBegin(); it != history->changesEnd(); ++it)
@@ -80,6 +74,19 @@ static void send_ack_if_datasharing(
     reader->send_acknack(writer, sns, writer, false);
 }
 
+static inline void send_ack_if_datasharing(
+        StatefulReader* reader,
+        ReaderHistory* history,
+        WriterProxy* writer,
+        const SequenceNumber_t& sequence_number)
+{
+    // Shall be datasharing, and not on same process
+    if (writer && writer->is_datasharing_writer() && !writer->is_on_same_process())
+    {
+        send_datasharing_ack(reader, history, writer, sequence_number);
+    }
+}
+
 StatefulReader::~StatefulReader()
 {
     logInfo(RTPS_READER, "StatefulReader destructor.");
@@ -194,7 +201,7 @@ bool StatefulReader::matched_writer_add(
         }
 
         bool is_same_process = RTPSDomainImpl::should_intraprocess_between(m_guid, wdata.guid());
-        bool is_datasharing = !is_same_process && is_datasharing_compatible_with(wdata);
+        bool is_datasharing = is_datasharing_compatible_with(wdata);
 
         for (WriterProxy* it : matched_writers_)
         {

src/cpp/rtps/reader/StatelessReader.cpp

@@ -110,7 +110,7 @@ bool StatelessReader::matched_writer_add(
         }
 
         bool is_same_process = RTPSDomainImpl::should_intraprocess_between(m_guid, wdata.guid());
-        bool is_datasharing = !is_same_process && is_datasharing_compatible_with(wdata);
+        bool is_datasharing = is_datasharing_compatible_with(wdata);
 
         RemoteWriterInfo_t info;
         info.guid = wdata.guid();

test/blackbox/common/DDSBlackboxTestsDataSharing.cpp

@@ -43,7 +43,33 @@ bool check_shared_file (
     return result;
 }
 
-TEST(DDSDataSharing, BasicCommunication)
+class DDSDataSharing : public testing::TestWithParam<bool>
+{
+public:
+
+    void SetUp() override
+    {
+        if (GetParam())
+        {
+            LibrarySettingsAttributes library_settings;
+            library_settings.intraprocess_delivery = IntraprocessDeliveryType::INTRAPROCESS_FULL;
+            xmlparser::XMLProfileManager::library_settings(library_settings);
+        }
+    }
+
+    void TearDown() override
+    {
+        if (GetParam())
+        {
+            LibrarySettingsAttributes library_settings;
+            library_settings.intraprocess_delivery = IntraprocessDeliveryType::INTRAPROCESS_OFF;
+            xmlparser::XMLProfileManager::library_settings(library_settings);
+        }
+    }
+
+};
+
+TEST_P(DDSDataSharing, BasicCommunication)
 {
     PubSubReader<FixedSizedPubSubType> reader(TEST_TOPIC_NAME);
     PubSubWriter<FixedSizedPubSubType> writer(TEST_TOPIC_NAME);
@@ -159,7 +185,7 @@ TEST(DDSDataSharing, TransientReader)
 }
 
 
-TEST(DDSDataSharing, BestEffortDirtyPayloads)
+TEST_P(DDSDataSharing, BestEffortDirtyPayloads)
 {
     // The writer's pool is smaller than the reader history.
     // The number of samples is larger than the pool size, so some payloads get reused
@@ -221,7 +247,7 @@ TEST(DDSDataSharing, BestEffortDirtyPayloads)
     ASSERT_FALSE(check_shared_file(".", writer.datawriter_guid()));
 }
 
-TEST(DDSDataSharing, ReliableDirtyPayloads)
+TEST_P(DDSDataSharing, ReliableDirtyPayloads)
 {
     // The writer's pool is smaller than the reader history.
     // The number of samples is larger than the pool size, so some payloads get rused
@@ -601,7 +627,7 @@ TEST(DDSDataSharing, DataSharingReader_CommonDomainWriters)
 }
 
 
-TEST(DDSDataSharing, DataSharingPoolError)
+TEST_P(DDSDataSharing, DataSharingPoolError)
 {
     PubSubWriter<Data1mbPubSubType> writer_datasharing(TEST_TOPIC_NAME);
     PubSubWriter<Data1mbPubSubType> writer_auto(TEST_TOPIC_NAME);
@@ -651,7 +677,7 @@ TEST(DDSDataSharing, DataSharingPoolError)
 }
 
 
-TEST(DDSDataSharing, DataSharingDefaultDirectory)
+TEST_P(DDSDataSharing, DataSharingDefaultDirectory)
 {
     // Since the default directory heavily depends on the system,
     // we are not checking the creation of the files in this case,
@@ -904,3 +930,18 @@ TEST(DDSDataSharing, acknack_reception_when_get_unread_count)
     ASSERT_FALSE(check_shared_file(".", reader.datareader_guid()));
     ASSERT_FALSE(check_shared_file(".", writer.datawriter_guid()));
 }
+
+#ifdef INSTANTIATE_TEST_SUITE_P
+#define GTEST_INSTANTIATE_TEST_MACRO(x, y, z, w) INSTANTIATE_TEST_SUITE_P(x, y, z, w)
+#else
+#define GTEST_INSTANTIATE_TEST_MACRO(x, y, z, w) INSTANTIATE_TEST_CASE_P(x, y, z, w)
+#endif // ifdef INSTANTIATE_TEST_SUITE_P
+
+GTEST_INSTANTIATE_TEST_MACRO(DDSDataSharing,
+        DDSDataSharing,
+        testing::Values(false, true),
+        [](const testing::TestParamInfo<DDSDataSharing::ParamType>& info)
+        {
+            bool intraprocess = info.param;
+            return intraprocess ? "Intraprocess_and_datasharing" : "Datasharing_only";
+        });