DevTools: Track async stacks on the corresponding execution context.

Source/core/inspector/AsyncCallStackTracker.h

 /*
  * 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 23 matching lines @@
 #include "bindings/v8/ScriptValue.h"
 #include "wtf/Deque.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
+class ExecutionContext;
+
 class AsyncCallStackTracker {
     WTF_MAKE_NONCOPYABLE(AsyncCallStackTracker);
 public:
     class AsyncCallStack : public RefCounted<AsyncCallStack> {
     public:
         AsyncCallStack(const ScriptValue&);
         ~AsyncCallStack();
         ScriptValue callFrames() const { return m_callFrames; }
     private:
         ScriptValue m_callFrames;
@@ skipping 10 matching lines @@
         friend class AsyncCallStackTracker;
         AsyncCallStackVector m_callStacks;
     };
 
     AsyncCallStackTracker();
 
     bool isEnabled() const { return m_maxAsyncCallStackDepth; }
     void setAsyncCallStackDepth(int);
     const AsyncCallChain* currentAsyncCallChain() const;
 
-    void didInstallTimer(int timerId, bool singleShot, const ScriptValue& callFrames);
-    void didRemoveTimer(int timerId);
-    void willFireTimer(int timerId);
+    void didInstallTimer(ExecutionContext*, int timerId, bool singleShot, const ScriptValue& callFrames);

[pfeldman, 2013/12/10 15:31:34]

Glancing at this suggests that there should be stack tracker per execution
context.

+    void didRemoveTimer(ExecutionContext*, int timerId);
+    void willFireTimer(ExecutionContext*, int timerId);
 
-    void didRequestAnimationFrame(int callbackId, const ScriptValue& callFrames);
-    void didCancelAnimationFrame(int callbackId);
-    void willFireAnimationFrame(int callbackId);
+    void didRequestAnimationFrame(ExecutionContext*, int callbackId, const ScriptValue& callFrames);
+    void didCancelAnimationFrame(ExecutionContext*, int callbackId);
+    void willFireAnimationFrame(ExecutionContext*, int callbackId);
 
     void didFireAsyncCall();
     void clear();
 
 private:
     PassRefPtr<AsyncCallChain> createAsyncCallChain(const ScriptValue& callFrames);
     static void ensureMaxAsyncCallChainDepth(AsyncCallChain*, unsigned);
     static bool validateCallFrames(const ScriptValue& callFrames);
 
+    class ExecutionContextData;
+    void contextDestroyed(ExecutionContext*);
+    ExecutionContextData* createContextDataIfNeeded(ExecutionContext*);
+
     unsigned m_maxAsyncCallStackDepth;
     RefPtr<AsyncCallChain> m_currentAsyncCallChain;
-    HashSet<int> m_intervalTimerIds;
-    HashMap<int, RefPtr<AsyncCallChain> > m_timerCallChains;
-    HashMap<int, RefPtr<AsyncCallChain> > m_animationFrameCallChains;
+    HashMap<ExecutionContext*, ExecutionContextData*> m_executionContextDataMap;
 };
 
 } // namespace WebCore
 
 #endif // !defined(AsyncCallStackTracker_h)