1 /* 2 * Copyright (C) 2010 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 ScriptGCEvent_h 32 #define ScriptGCEvent_h 33 34 #include "v8.h" 35 #include "wtf/Vector.h" 36 37 namespace WebCore { 38 39 struct HeapInfo { HeapInfoHeapInfo40 HeapInfo() 41 : usedJSHeapSize(0) 42 , totalJSHeapSize(0) 43 , jsHeapSizeLimit(0) 44 { 45 } 46 47 size_t usedJSHeapSize; 48 size_t totalJSHeapSize; 49 size_t jsHeapSizeLimit; 50 }; 51 52 class ScriptGCEventListener; 53 54 class GCEventData { 55 public: 56 typedef Vector<ScriptGCEventListener*> GCEventListeners; 57 GCEventData()58 GCEventData() 59 : m_startTime(0.0) 60 , m_usedHeapSize(0) 61 { } 62 clear()63 void clear() 64 { 65 m_startTime = 0.0; 66 m_usedHeapSize = 0; 67 } 68 listeners()69 GCEventListeners& listeners() { return m_listeners; } 70 startTime()71 double startTime() { return m_startTime; } setStartTime(double startTime)72 void setStartTime(double startTime) { m_startTime = startTime; } usedHeapSize()73 size_t usedHeapSize() { return m_usedHeapSize; } setUsedHeapSize(size_t usedHeapSize)74 void setUsedHeapSize(size_t usedHeapSize) { m_usedHeapSize = usedHeapSize; } 75 76 private: 77 double m_startTime; 78 size_t m_usedHeapSize; 79 GCEventListeners m_listeners; 80 }; 81 82 83 class ScriptGCEvent 84 { 85 public: 86 static void addEventListener(ScriptGCEventListener*); 87 static void removeEventListener(ScriptGCEventListener*); 88 static void getHeapSize(HeapInfo&); 89 90 private: 91 static void gcEpilogueCallback(v8::GCType type, v8::GCCallbackFlags flags); 92 static void gcPrologueCallback(v8::GCType type, v8::GCCallbackFlags flags); 93 static size_t getUsedHeapSize(); 94 }; 95 96 97 } // namespace WebCore 98 99 #endif // !defined(ScriptGCEvent_h) 100