Move solution for reduction-related barriers to the backend layer.

Merge branch 'feature/implementationSpecificBarrier' into develop

Author: jblueh

include/opdi/backend/macro/reductionTools.hpp

@@ -57,6 +57,8 @@ namespace opdi {
         }
         ReductionTools::reductionBarrierStack.pop();
         if (ProbeScopeStatus::insideImplicitTaskProbeScope()) {
+          logic->onSyncRegion(LogicInterface::SyncRegionKind::BarrierImplementation,
+                              LogicInterface::ScopeEndpoint::Begin);
           #pragma omp barrier
           logic->onSyncRegion(LogicInterface::SyncRegionKind::BarrierImplementation,
                               LogicInterface::ScopeEndpoint::End);
@@ -72,6 +74,8 @@ namespace opdi {
             #else
               logic->onSyncRegion(LogicInterface::SyncRegionKind::BarrierImplementation,
                                   LogicInterface::ScopeEndpoint::Begin);
+              logic->onSyncRegion(LogicInterface::SyncRegionKind::BarrierImplementation,
+                                  LogicInterface::ScopeEndpoint::End);
             #endif
           }
           ReductionTools::reductionBarrierStack.top() = true;

include/opdi/backend/ompt/syncRegionCallbacks.hpp

@@ -80,7 +80,12 @@ namespace opdi {
             logic->onSyncRegion(LogicInterface::SyncRegionKind::BarrierExplicit, endpoint);
             break;
           case ompt_sync_region_barrier_implementation:
+          #if OPDI_OMPT_BACKEND_BARRIER_IMPLEMENTATION_BEHAVIOUR == OPDI_PAIR_OF_AD_EVENTS_PER_ENDPOINT
+            logic->onSyncRegion(LogicInterface::SyncRegionKind::BarrierImplementation, LogicInterface::ScopeEndpoint::Begin);
+            logic->onSyncRegion(LogicInterface::SyncRegionKind::BarrierImplementation, LogicInterface::ScopeEndpoint::End);
+          #else
             logic->onSyncRegion(LogicInterface::SyncRegionKind::BarrierImplementation, endpoint);
+          #endif
             break;
         #if _OPENMP >= 202011
           case ompt_sync_region_barrier_implicit_parallel:

include/opdi/config.hpp

@@ -27,8 +27,6 @@
 
 /* ------------------ constants ------------------ */
 
-/* backends */
-
 #define OPDI_MACRO_BACKEND 1
 #define OPDI_OMPT_BACKEND 2
 
@@ -42,6 +40,9 @@
 #define OPDI_OMPT_IMPLICIT_TASK_END 1
 #define OPDI_OMPT_SYNC_REGION_END 2
 
+#define OPDI_PAIR_OF_AD_EVENTS_PER_ENDPOINT 1
+#define OPDI_SINGLE_AD_EVENT_PER_ENDPOINT 2
+
 /* ------------------ configuration ------------------ */
 
 /* ----- backend configuration ----- */
@@ -61,6 +62,12 @@
 static_assert(0 < OPDI_OMPT_BACKEND_IMPLICIT_TASK_END_SOURCE);
 static_assert(OPDI_OMPT_BACKEND_IMPLICIT_TASK_END_SOURCE <= 2);
 
+#ifndef OPDI_OMPT_BACKEND_BARRIER_IMPLEMENTATION_BEHAVIOUR
+  #define OPDI_OMPT_BACKEND_BARRIER_IMPLEMENTATION_BEHAVIOUR OPDI_PAIR_OF_AD_EVENTS_PER_ENDPOINT
+#endif
+
+static_assert(0 < OPDI_OMPT_BACKEND_BARRIER_IMPLEMENTATION_BEHAVIOUR);
+static_assert(OPDI_OMPT_BACKEND_BARRIER_IMPLEMENTATION_BEHAVIOUR <= 2);
 
 /* ----- logic configuration ----- */
 
@@ -105,7 +112,7 @@ static_assert(0 < OPDI_SYNC_REGION_BARRIER_EXPLICIT_BEHAVIOUR);
 static_assert(OPDI_SYNC_REGION_BARRIER_EXPLICIT_BEHAVIOUR <= 3);
 
 #ifndef OPDI_SYNC_REGION_BARRIER_IMPLEMENTATION_BEHAVIOUR
-  #define OPDI_SYNC_REGION_BARRIER_IMPLEMENTATION_BEHAVIOUR OPDI_SCOPE_ENDPOINT_BOTH
+  #define OPDI_SYNC_REGION_BARRIER_IMPLEMENTATION_BEHAVIOUR OPDI_SCOPE_ENDPOINT_BEGIN
 #endif
 
 static_assert(0 < OPDI_SYNC_REGION_BARRIER_IMPLEMENTATION_BEHAVIOUR);