1 /* 2 * Copyright (C) 2011 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 RetainedDOMInfo_h 32 #define RetainedDOMInfo_h 33 34 #include "RetainedObjectInfo.h" 35 36 namespace WebCore { 37 38 class Node; 39 40 // Implements v8::RetainedObjectInfo. 41 class RetainedDOMInfo : public RetainedObjectInfo { 42 public: 43 explicit RetainedDOMInfo(Node* root); 44 virtual ~RetainedDOMInfo(); 45 virtual void Dispose(); 46 virtual bool IsEquivalent(v8::RetainedObjectInfo* other); 47 virtual intptr_t GetHash(); 48 virtual const char* GetLabel(); 49 virtual intptr_t GetElementCount(); 50 virtual intptr_t GetEquivalenceClass(); 51 52 private: 53 // V8 guarantees to keep RetainedObjectInfos alive only during a GC or heap snapshotting round, when renderer 54 // doesn't get control. This allows us to use raw pointers. 55 Node* m_root; 56 }; 57 58 } // namespace WebCore 59 60 #endif // RetainedDOMInfo_h 61