LZEventPool finish

src/backend/Level0/CHIPBackendLevel0.cc

@@ -721,9 +721,8 @@ void CHIPStaleEventMonitorLevel0::checkEvents() {
 
     ChipEventLz->isDeletedSanityCheck();
 
-    // delete the event if refcount reached 2
-    // this->ChipEvent and LZEventPool::Events_
-    if (ChipEventLz.use_count() == 2) {
+    // delete the event if refcount reached 1 (this->ChipEventLz)
+    if (ChipEventLz.use_count() == 1) {
       if (ChipEventLz->EventPool) {
         ChipEventLz->isDeletedSanityCheck();
         ChipEventLz->EventPool->returnEvent(ChipEventLz);
@@ -1682,8 +1681,7 @@ LZEventPool::LZEventPool(CHIPContextLevel0 *Ctx, unsigned int Size)
     chipstar::EventFlags Flags;
     auto NewEvent = std::shared_ptr<CHIPEventLevel0>(
         new CHIPEventLevel0(Ctx_, this, i, Flags));
-    Events_.push_back(NewEvent);
-    AvailableEvents_.push(NewEvent);
+    Events_.push(NewEvent);
   }
 };
 
@@ -1695,9 +1693,8 @@ LZEventPool::~LZEventPool() {
     logWarn("CHIPUserEventLevel0 objects still exist at the time of EventPool "
             "destruction");
 
-  while (AvailableEvents_.size())
-    AvailableEvents_.pop();
-  Events_.clear(); // shared_ptr's will be deleted
+  while (Events_.size())
+    Events_.pop();
   // The application must not call this function from
   // simultaneous threads with the same event pool handle.
   // Done via destructor should not be called from multiple threads
@@ -1708,11 +1705,11 @@ LZEventPool::~LZEventPool() {
 
 std::shared_ptr<CHIPEventLevel0> LZEventPool::getEvent() {
   std::shared_ptr<CHIPEventLevel0> Event;
-  if (!AvailableEvents_.size())
+  if (!Events_.size())
     return nullptr;
 
-  Event = AvailableEvents_.top();
-  AvailableEvents_.pop();
+  Event = Events_.top();
+  Events_.pop();
 
   return Event;
 };
@@ -1723,7 +1720,7 @@ void LZEventPool::returnEvent(std::shared_ptr<CHIPEventLevel0> Event) {
   LOCK(EventPoolMtx);
   logTrace("Returning event {} handle {}", (void *)Event.get(),
            (void *)Event.get()->get());
-  AvailableEvents_.push(Event);
+  Events_.push(Event);
 }
 
 // End EventPool

src/backend/Level0/CHIPBackendLevel0.hh

@@ -208,14 +208,13 @@ private:
   CHIPContextLevel0 *Ctx_;
   ze_event_pool_handle_t EventPool_;
   unsigned int Size_;
-  std::vector<std::shared_ptr<CHIPEventLevel0>> Events_;
-  std::stack<std::shared_ptr<CHIPEventLevel0>> AvailableEvents_;
+  std::stack<std::shared_ptr<CHIPEventLevel0>> Events_;
 
 public:
   std::mutex EventPoolMtx;
   LZEventPool(CHIPContextLevel0 *Ctx, unsigned int Size);
   ~LZEventPool();
-  bool EventAvailable() { return AvailableEvents_.size() > 0; }
+  bool EventAvailable() { return Events_.size() > 0; }
   ze_event_pool_handle_t get() { return EventPool_; }
 
   void returnEvent(std::shared_ptr<CHIPEventLevel0> Event);