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/*
* 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
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef AsyncCallStackTracker_h
#define AsyncCallStackTracker_h
#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 Event;
class EventListener;
class EventTarget;
class ExecutionContext;
class MutationObserver;
class XMLHttpRequest;
class AsyncCallStackTracker {
WTF_MAKE_NONCOPYABLE(AsyncCallStackTracker);
public:
class AsyncCallStack : public RefCounted<AsyncCallStack> {
public:
AsyncCallStack(const String&, const ScriptValue&);
~AsyncCallStack();
String description() const { return m_description; }
ScriptValue callFrames() const { return m_callFrames; }
private:
String m_description;
ScriptValue m_callFrames;
};
typedef Deque<RefPtr<AsyncCallStack>, 4> AsyncCallStackVector;
class AsyncCallChain : public RefCounted<AsyncCallChain> {
public:
AsyncCallChain() { }
AsyncCallChain(const AsyncCallChain& t) : m_callStacks(t.m_callStacks) { }
AsyncCallStackVector callStacks() const { return m_callStacks; }
private:
friend class AsyncCallStackTracker;
AsyncCallStackVector m_callStacks;
};
AsyncCallStackTracker();
bool isEnabled() const { return m_maxAsyncCallStackDepth; }
void setAsyncCallStackDepth(int);
const AsyncCallChain* currentAsyncCallChain() const;
void didInstallTimer(ExecutionContext*, int timerId, bool singleShot, const ScriptValue& callFrames);
void didRemoveTimer(ExecutionContext*, int timerId);
void willFireTimer(ExecutionContext*, int timerId);
void didRequestAnimationFrame(ExecutionContext*, int callbackId, const ScriptValue& callFrames);
void didCancelAnimationFrame(ExecutionContext*, int callbackId);
void willFireAnimationFrame(ExecutionContext*, int callbackId);
void didEnqueueEvent(EventTarget*, Event*, const ScriptValue& callFrames);
void didRemoveEvent(EventTarget*, Event*);
void willHandleEvent(EventTarget*, Event*, EventListener*, bool useCapture);
void willLoadXHR(XMLHttpRequest*, const ScriptValue& callFrames);
void didEnqueueMutationRecord(ExecutionContext*, MutationObserver*, const ScriptValue& callFrames);
bool hasEnqueuedMutationRecord(ExecutionContext*, MutationObserver*);
void didClearAllMutationRecords(ExecutionContext*, MutationObserver*);
void willDeliverMutationRecords(ExecutionContext*, MutationObserver*);
void didFireAsyncCall();
void clear();
private:
void willHandleXHREvent(XMLHttpRequest*, EventTarget*, Event*);
PassRefPtr<AsyncCallChain> createAsyncCallChain(const String& description, const ScriptValue& callFrames);
void setCurrentAsyncCallChain(PassRefPtr<AsyncCallChain>);
void clearCurrentAsyncCallChain();
static void ensureMaxAsyncCallChainDepth(AsyncCallChain*, unsigned);
static bool validateCallFrames(const ScriptValue& callFrames);
class ExecutionContextData;
ExecutionContextData* createContextDataIfNeeded(ExecutionContext*);
unsigned m_maxAsyncCallStackDepth;
RefPtr<AsyncCallChain> m_currentAsyncCallChain;
unsigned m_nestedAsyncCallCount;
typedef HashMap<ExecutionContext*, ExecutionContextData*> ExecutionContextDataMap;
ExecutionContextDataMap m_executionContextDataMap;
};
} // namespace WebCore
#endif // !defined(AsyncCallStackTracker_h)
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