Move destruction of command stream receiver to execution environment.

- remove other explicit resets, no longer needed.
- change the order of destruction, command stream receiver needs to be
destroyed prior to memory manager.

Change-Id: I3c5db46db15a2cb7dc9f6fdb0e06441806fbd9f2

runtime/command_stream/command_stream_receiver.cpp

@@ -182,7 +182,6 @@ LinearStream &CommandStreamReceiver::getCS(size_t minRequiredSize) {
 }
 
 void CommandStreamReceiver::cleanupResources() {
-    auto memoryManager = this->getMemoryManager();
     if (!memoryManager)
         return;
 
@@ -210,7 +209,6 @@ void CommandStreamReceiver::cleanupResources() {
         tagAllocation = nullptr;
         tagAddress = nullptr;
     }
-    experimentalCmdBuffer.reset(nullptr);
 }
 
 bool CommandStreamReceiver::waitForCompletionWithTimeout(bool enableTimeout, int64_t timeoutMicroseconds, uint32_t taskCountToWait) {

runtime/device/device.cpp

@@ -106,9 +106,9 @@ Device::~Device() {
     if (performanceCounters) {
         performanceCounters->shutdown();
     }
+
     if (executionEnvironment->commandStreamReceiver) {
         executionEnvironment->commandStreamReceiver->flushBatchedSubmissions();
-        executionEnvironment->commandStreamReceiver.reset(nullptr);
     }
 
     if (deviceInfo.sourceLevelDebuggerActive && sourceLevelDebugger) {

runtime/execution_environment/execution_environment.h

@@ -39,7 +39,7 @@ class ExecutionEnvironment : public ReferenceTrackedObject<ExecutionEnvironment>
     ExecutionEnvironment();
     ~ExecutionEnvironment() override;
     void initGmm(const HardwareInfo *hwInfo);
-    std::unique_ptr<CommandStreamReceiver> commandStreamReceiver;
     std::unique_ptr<MemoryManager> memoryManager;
+    std::unique_ptr<CommandStreamReceiver> commandStreamReceiver;
 };
 } // namespace OCLRT