WIP towards resetting adjoint access mode.

Author: jblueh

include/opdi/logic/logicInterface.hpp

@@ -85,6 +85,13 @@ namespace opdi {
       virtual void setAdjointAccessMode(AdjointAccessMode adjointAccess) = 0;
       virtual AdjointAccessMode getAdjointAccessMode() const = 0;
 
+      /** @brief Complement positional tape resets by OpDiLib-specific cleanup.
+       *
+       *  Cleanup performed for the task of the calling thread. Reverts changes of the adjoint access mode, up to the
+       *  last adjoint access mode that was set at this position.
+       */
+      virtual void resetTask(void* position) = 0;
+
       virtual void addReverseBarrier() = 0;
       virtual void addReverseFlush() = 0;
   };

include/opdi/logic/omp/implicitTaskOmpLogic.cpp

@@ -23,6 +23,9 @@
  *
  */
 
+#include <cassert>
+
+#include "../../backend/backendInterface.hpp"
 #include "../../config.hpp"
 #include "../../helpers/exceptions.hpp"
 #include "../../tool/toolInterface.hpp"
@@ -117,3 +120,21 @@ void opdi::ImplicitTaskOmpLogic::onImplicitTaskEnd(void* dataPtr) {
     // do not delete data, it is deleted as part of parallel regions
   }
 }
+
+void opdi::ImplicitTaskOmpLogic::resetTask(void* position) {
+
+  void* parallelDataPtr = backend->getParallelData();
+
+  if (parallelDataPtr) {
+    opdi::ParallelOmpLogic::Data* parallelData = reinterpret_cast<opdi::ParallelOmpLogic::Data*>(parallelDataPtr);
+
+    Data* taskData = reinterpret_cast<Data*>(parallelData->childTasks[omp_get_thread_num()]);
+
+    assert(tool->comparePosition(taskData->positions.front(), position) <= 0);
+
+    while (tool->comparePosition(taskData->positions.back(), position) > 0) {
+      taskData->positions.pop_back();
+      taskData->adjointAccessModes.pop_back();
+    }
+  }
+}

include/opdi/logic/omp/implicitTaskOmpLogic.hpp

@@ -61,5 +61,7 @@ namespace opdi {
 
       virtual void* onImplicitTaskBegin(int actualParallelism, int index, void* parallelDataPtr);
       virtual void onImplicitTaskEnd(void* dataPtr);
+
+      virtual void resetTask(void* position);
   };
 }