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| 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
| 3 * |
| 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are |
| 6 * met: |
| 7 * |
| 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above |
| 11 * copyright notice, this list of conditions and the following disclaimer |
| 12 * in the documentation and/or other materials provided with the |
| 13 * distribution. |
| 14 * * Neither the name of Google Inc. nor the names of its |
| 15 * contributors may be used to endorse or promote products derived from |
| 16 * this software without specific prior written permission. |
| 17 * |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 */ |
| 30 |
| 31 #ifndef AsyncCallStackTracker_h |
| 32 #define AsyncCallStackTracker_h |
| 33 |
| 34 #include "bindings/v8/ScriptValue.h" |
| 35 #include "wtf/FastAllocBase.h" |
| 36 #include "wtf/HashMap.h" |
| 37 #include "wtf/HashSet.h" |
| 38 #include "wtf/Noncopyable.h" |
| 39 #include "wtf/PassRefPtr.h" |
| 40 #include "wtf/RefPtr.h" |
| 41 |
| 42 namespace WebCore { |
| 43 |
| 44 class AsyncCallStackTracker { |
| 45 WTF_MAKE_NONCOPYABLE(AsyncCallStackTracker); WTF_MAKE_FAST_ALLOCATED; |
| 46 private: |
| 47 class AsyncCallStack; |
| 48 |
| 49 public: |
| 50 class AsyncCallStackIterator { |
| 51 public: |
| 52 bool hasNext() const; |
| 53 ScriptValue next(); |
| 54 |
| 55 private: |
| 56 friend class AsyncCallStackTracker; |
| 57 AsyncCallStackIterator(AsyncCallStack* head, AsyncCallStack* tail); |
| 58 RefPtr<AsyncCallStack> m_head; |
| 59 RefPtr<AsyncCallStack> m_tail; |
| 60 }; |
| 61 |
| 62 AsyncCallStackTracker(); |
| 63 |
| 64 inline bool isEnabled() const { return m_maxAsyncCallStackDepth; } |
| 65 void setAsyncCallStackDepth(int); |
| 66 AsyncCallStackIterator currentAsyncCallStack(); |
| 67 |
| 68 void didInstallTimer(int timerId, bool singleShot); |
| 69 void didRemoveTimer(int timerId); |
| 70 void willFireTimer(int timerId); |
| 71 |
| 72 void didRequestAnimationFrame(int callbackId); |
| 73 void didCancelAnimationFrame(int callbackId); |
| 74 void willFireAnimationFrame(int callbackId); |
| 75 |
| 76 void didAsyncCall(); |
| 77 void didRequestAsyncCallFrames(ScriptValue callFrames); |
| 78 |
| 79 void clear(); |
| 80 |
| 81 private: |
| 82 class AsyncCallStack : public RefCounted<AsyncCallStack> { |
| 83 public: |
| 84 explicit AsyncCallStack(AsyncCallStack* next); |
| 85 |
| 86 ScriptValue m_callFrames; |
| 87 RefPtr<AsyncCallStack> m_next; |
| 88 int m_pathCount; |
| 89 }; |
| 90 |
| 91 AsyncCallStack* requestAsyncCallStack(); |
| 92 void setCurrentAsyncCallStack(PassRefPtr<AsyncCallStack>, int delta); |
| 93 void modifyPathCount(PassRefPtr<AsyncCallStack>, int delta); |
| 94 |
| 95 int m_maxAsyncCallStackDepth; |
| 96 int m_currentAsyncCallStackDelta; |
| 97 RefPtr<AsyncCallStack> m_currentAsyncCallStack; |
| 98 RefPtr<AsyncCallStack> m_requestedAsyncCallStack; |
| 99 HashSet<int> m_intervalTimerIds; |
| 100 HashMap<int, RefPtr<AsyncCallStack> > m_timerCallStacks; |
| 101 HashMap<int, RefPtr<AsyncCallStack> > m_animationFrameCallStacks; |
| 102 }; |
| 103 |
| 104 } // namespace WebCore |
| 105 |
| 106 #endif // !defined(AsyncCallStackTracker_h) |
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