Users/dayatsin/swdev 519413 hsa amd pointer info return err shutdown (#1509)

* rocr: hsa_amd_pointer_info return err on shutdown

Decrement ref count before starting to unload to make sure API
calls during shutdown return error.

Delete blit objects during agent destructor.

* Add support for HSA_AMD_SYSTEM_SHUTDOWN_EVENT

Add support for new event to indicate shut down within the
hsa_amd_register_system_event_handler API.

projects/rocr-runtime/runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp

@@ -244,6 +244,8 @@ GpuAgent::GpuAgent(HSAuint32 node, const HsaNodeProperties& node_props, bool xna
 }
 
 GpuAgent::~GpuAgent() {
+  for (auto& blit : blits_) blit.reset();
+
   std::for_each(regions_.begin(), regions_.end(), DeleteObject());
   regions_.clear();
 }

projects/rocr-runtime/runtime/hsa-runtime/core/runtime/runtime.cpp

@@ -150,13 +150,22 @@ hsa_status_t Runtime::Release() {
 
   if (runtime_singleton_ == nullptr) return HSA_STATUS_ERROR_NOT_INITIALIZED;
 
-  if (runtime_singleton_->ref_count_ == 1) {
+  if (runtime_singleton_->ref_count_-- == 1) {
+    auto system_event_handlers = runtime_singleton_->GetSystemEventHandlers();
+
+    if (!system_event_handlers.empty()) {
+      hsa_amd_event_t system_shutdown_event = {} ;
+      system_shutdown_event.event_type = HSA_AMD_SYSTEM_SHUTDOWN_EVENT;
+      /* Remaining fields hsa_amd_event_t are empty */
+
+      for (auto& callback : system_event_handlers) {
+        callback.first(&system_shutdown_event, callback.second);
+      }
+    }
     // Release all registered memory, then unload backends
     runtime_singleton_->Unload();
   }
 
-  runtime_singleton_->ref_count_--;
-
   if (runtime_singleton_->ref_count_ == 0) {
     delete runtime_singleton_;
     runtime_singleton_ = nullptr;