DevTools: Support async call stacks for scripted animation events (like scroll).

Source/core/inspector/AsyncCallStackTracker.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 58 matching lines @@
         ASSERT(self == this);
         ContextLifecycleObserver::contextDestroyed();
         delete self;
     }
 
 public:
     AsyncCallStackTracker* m_tracker;
     HashSet<int> m_intervalTimerIds;
     HashMap<int, RefPtr<AsyncCallChain> > m_timerCallChains;
     HashMap<int, RefPtr<AsyncCallChain> > m_animationFrameCallChains;
+    HashMap<Event*, RefPtr<AsyncCallChain> > m_eventCallChains;
     HashMap<EventTarget*, RefPtr<AsyncCallChain> > m_xhrCallChains;
     HashMap<MutationObserver*, RefPtr<AsyncCallChain> > m_mutationObserverCallChains;
 };
 
 static XMLHttpRequest* toXmlHttpRequest(EventTarget* eventTarget)
 {
     const AtomicString& interfaceName = eventTarget->interfaceName();
     if (interfaceName == EventTargetNames::XMLHttpRequest)
         return static_cast<XMLHttpRequest*>(eventTarget);
     if (interfaceName == EventTargetNames::XMLHttpRequestUpload)
@@ skipping 101 matching lines @@
     ASSERT(context);
     ASSERT(isEnabled());
     ASSERT(callbackId > 0);
     ASSERT(!m_currentAsyncCallChain);
     if (ExecutionContextData* data = m_executionContextDataMap.get(context))
         setCurrentAsyncCallChain(data->m_animationFrameCallChains.take(callbackId));
     else
         setCurrentAsyncCallChain(nullptr);
 }
 
-void AsyncCallStackTracker::willHandleEvent(EventTarget* eventTarget, const AtomicString& eventType, EventListener* listener, bool useCapture)
+void AsyncCallStackTracker::didEnqueueEvent(EventTarget* eventTarget, Event* event, const ScriptValue& callFrames)
 {
     ASSERT(eventTarget->executionContext());
     ASSERT(isEnabled());
-    if (XMLHttpRequest* xhr = toXmlHttpRequest(eventTarget))
-        willHandleXHREvent(xhr, eventTarget, eventType);
-    else
-        setCurrentAsyncCallChain(nullptr);
+    if (!validateCallFrames(callFrames))
+        return;
+    ExecutionContextData* data = createContextDataIfNeeded(eventTarget->executionContext());
+    data->m_eventCallChains.set(event, createAsyncCallChain(event->type(), callFrames));
+}
+
+void AsyncCallStackTracker::didDispatchEvent(EventTarget* eventTarget, Event* event)
+{
+    ASSERT(eventTarget->executionContext());
+    ASSERT(isEnabled());
+    if (ExecutionContextData* data = m_executionContextDataMap.get(eventTarget->executionContext()))
+        data->m_eventCallChains.remove(event);
+}
+
+void AsyncCallStackTracker::willHandleEvent(EventTarget* eventTarget, Event* event, EventListener* listener, bool useCapture)
+{
+    ASSERT(eventTarget->executionContext());
+    ASSERT(isEnabled());
+    if (XMLHttpRequest* xhr = toXmlHttpRequest(eventTarget)) {
+        willHandleXHREvent(xhr, eventTarget, event);
+    } else {
+        if (ExecutionContextData* data = m_executionContextDataMap.get(eventTarget->executionContext()))
+            setCurrentAsyncCallChain(data->m_eventCallChains.get(event));
+        else
+            setCurrentAsyncCallChain(nullptr);
+    }
 }
 
 void AsyncCallStackTracker::willLoadXHR(XMLHttpRequest* xhr, const ScriptValue& callFrames)
 {
     ASSERT(xhr->executionContext());
     ASSERT(isEnabled());
     if (!validateCallFrames(callFrames))
         return;
     ExecutionContextData* data = createContextDataIfNeeded(xhr->executionContext());
     data->m_xhrCallChains.set(xhr, createAsyncCallChain(xhrSendName, callFrames));
 }
 
-void AsyncCallStackTracker::willHandleXHREvent(XMLHttpRequest* xhr, EventTarget* eventTarget, const AtomicString& eventType)
+void AsyncCallStackTracker::willHandleXHREvent(XMLHttpRequest* xhr, EventTarget* eventTarget, Event* event)
 {
     ASSERT(xhr->executionContext());
     ASSERT(isEnabled());
     if (ExecutionContextData* data = m_executionContextDataMap.get(xhr->executionContext())) {
         bool isXHRDownload = (xhr == eventTarget);
-        if (isXHRDownload && eventType == EventTypeNames::loadend)
+        if (isXHRDownload && event->type() == EventTypeNames::loadend)
             setCurrentAsyncCallChain(data->m_xhrCallChains.take(xhr));
         else
             setCurrentAsyncCallChain(data->m_xhrCallChains.get(xhr));
     } else {
         setCurrentAsyncCallChain(nullptr);
     }
 }
 
 void AsyncCallStackTracker::didEnqueueMutationRecord(ExecutionContext* context, MutationObserver* observer, const ScriptValue& callFrames)
 {
@@ skipping 91 matching lines @@
 {
     m_currentAsyncCallChain.clear();
     m_nestedAsyncCallCount = 0;
     ExecutionContextDataMap copy;
     m_executionContextDataMap.swap(copy);
     for (ExecutionContextDataMap::const_iterator it = copy.begin(); it != copy.end(); ++it)
         delete it->value;
 }
 
 } // namespace WebCore