DevTools: Instrument DOMWindowEventQueue for async stacks.

Source/core/events/DOMWindowEventQueue.cpp

 /*
  * Copyright (C) 2010 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  *
  */
 
 #include "config.h"
 #include "core/events/DOMWindowEventQueue.h"
 
 #include "core/dom/Document.h"
 #include "core/events/Event.h"
 #include "core/frame/DOMWindow.h"
 #include "core/frame/SuspendableTimer.h"
+#include "core/inspector/InspectorInstrumentation.h"
 
 namespace WebCore {
 
 class DOMWindowEventQueueTimer : public NoBaseWillBeGarbageCollectedFinalized<DOMWindowEventQueueTimer>, public SuspendableTimer {
     WTF_MAKE_NONCOPYABLE(DOMWindowEventQueueTimer);
 public:
     DOMWindowEventQueueTimer(DOMWindowEventQueue* eventQueue, ExecutionContext* context)
         : SuspendableTimer(context)
         , m_eventQueue(eventQueue) { }
     void trace(Visitor* visitor) { visitor->trace(m_eventQueue); }
@@ skipping 26 matching lines @@
     visitor->trace(m_queuedEvents);
     EventQueue::trace(visitor);
 }
 
 bool DOMWindowEventQueue::enqueueEvent(PassRefPtrWillBeRawPtr<Event> event)
 {
     if (m_isClosed)
         return false;
 
     ASSERT(event->target());
+    InspectorInstrumentation::didEnqueueEvent(event->target(), event.get());
+
     bool wasAdded = m_queuedEvents.add(event).isNewEntry;
     ASSERT_UNUSED(wasAdded, wasAdded); // It should not have already been in the list.
 
     if (!m_pendingEventTimer->isActive())
         m_pendingEventTimer->startOneShot(0, FROM_HERE);
 
     return true;
 }
 
 bool DOMWindowEventQueue::cancelEvent(Event* event)
 {
     WillBeHeapListHashSet<RefPtrWillBeMember<Event>, 16>::iterator it = m_queuedEvents.find(event);
     bool found = it != m_queuedEvents.end();
-    if (found)
+    if (found) {
+        InspectorInstrumentation::didDispatchEvent(event->target(), event);

[yurys, 2014/06/17 07:34:26]

Don't we need to distinguish cancel operation from regular didDidspatch?

[aandrey, 2014/06/17 10:34:18]

Renamed to didRemoveEvent.

         m_queuedEvents.remove(it);
+    }
     if (m_queuedEvents.isEmpty())
         m_pendingEventTimer->stop();
     return found;
 }
 
 void DOMWindowEventQueue::close()
 {
     m_isClosed = true;
     m_pendingEventTimer->stop();
+
+    WillBeHeapListHashSet<RefPtrWillBeMember<Event>, 16>::iterator it = m_queuedEvents.begin();
+    for (; it != m_queuedEvents.end(); ++it)
+        InspectorInstrumentation::didDispatchEvent((*it)->target(), it->get());

[yurys, 2014/06/17 07:34:26]

We shouldn't iterate over the queued events unless instrumentation is on. You
can wrap this code block in if (InspectorInstrumentation::hasFrontend()) check.

[aandrey, 2014/06/17 10:34:18]

Done.

     m_queuedEvents.clear();
 }
 
 void DOMWindowEventQueue::pendingEventTimerFired()
 {
     ASSERT(!m_pendingEventTimer->isActive());
     ASSERT(!m_queuedEvents.isEmpty());
 
     // Insert a marker for where we should stop.
     ASSERT(!m_queuedEvents.contains(nullptr));
     bool wasAdded = m_queuedEvents.add(nullptr).isNewEntry;
     ASSERT_UNUSED(wasAdded, wasAdded); // It should not have already been in the list.
 
     RefPtrWillBeRawPtr<DOMWindowEventQueue> protector(this);
 
     while (!m_queuedEvents.isEmpty()) {
         WillBeHeapListHashSet<RefPtrWillBeMember<Event>, 16>::iterator iter = m_queuedEvents.begin();
         RefPtrWillBeRawPtr<Event> event = *iter;
         m_queuedEvents.remove(iter);
         if (!event)
             break;
         dispatchEvent(event.get());
+        InspectorInstrumentation::didDispatchEvent(event->target(), event.get());
     }
 }
 
 void DOMWindowEventQueue::dispatchEvent(PassRefPtrWillBeRawPtr<Event> event)
 {
     EventTarget* eventTarget = event->target();
     if (eventTarget->toDOMWindow())
         eventTarget->toDOMWindow()->dispatchEvent(event, nullptr);
     else
         eventTarget->dispatchEvent(event);
 }
 
 }