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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/Deque.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); |
| 46 public: |
| 47 class AsyncCallStack : public RefCounted<AsyncCallStack> { |
| 48 public: |
| 49 AsyncCallStack(const ScriptValue&); |
| 50 ~AsyncCallStack(); |
| 51 ScriptValue callFrames() const { return m_callFrames; } |
| 52 private: |
| 53 ScriptValue m_callFrames; |
| 54 }; |
| 55 |
| 56 typedef Deque<RefPtr<AsyncCallStack>, 4> AsyncCallStackVector; |
| 57 |
| 58 class AsyncCallChain : public RefCounted<AsyncCallChain> { |
| 59 public: |
| 60 AsyncCallChain() { } |
| 61 AsyncCallChain(const AsyncCallChain& t) : m_callStacks(t.m_callStacks) {
} |
| 62 AsyncCallStackVector callStacks() const { return m_callStacks; } |
| 63 private: |
| 64 friend class AsyncCallStackTracker; |
| 65 AsyncCallStackVector m_callStacks; |
| 66 }; |
| 67 |
| 68 AsyncCallStackTracker(); |
| 69 |
| 70 bool isEnabled() const { return m_maxAsyncCallStackDepth; } |
| 71 void setAsyncCallStackDepth(int); |
| 72 const AsyncCallChain* currentAsyncCallChain() const; |
| 73 |
| 74 void didInstallTimer(int timerId, bool singleShot, const ScriptValue& callFr
ames); |
| 75 void didRemoveTimer(int timerId); |
| 76 void willFireTimer(int timerId); |
| 77 |
| 78 void didRequestAnimationFrame(int callbackId, const ScriptValue& callFrames)
; |
| 79 void didCancelAnimationFrame(int callbackId); |
| 80 void willFireAnimationFrame(int callbackId); |
| 81 |
| 82 void didFireAsyncCall(); |
| 83 void clear(); |
| 84 |
| 85 private: |
| 86 PassRefPtr<AsyncCallChain> createAsyncCallChain(const ScriptValue& callFrame
s); |
| 87 static void ensureMaxAsyncCallChainDepth(AsyncCallChain*, unsigned); |
| 88 static bool validateCallFrames(const ScriptValue& callFrames); |
| 89 |
| 90 unsigned m_maxAsyncCallStackDepth; |
| 91 RefPtr<AsyncCallChain> m_currentAsyncCallChain; |
| 92 HashSet<int> m_intervalTimerIds; |
| 93 HashMap<int, RefPtr<AsyncCallChain> > m_timerCallChains; |
| 94 HashMap<int, RefPtr<AsyncCallChain> > m_animationFrameCallChains; |
| 95 }; |
| 96 |
| 97 } // namespace WebCore |
| 98 |
| 99 #endif // !defined(AsyncCallStackTracker_h) |
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