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 "bindings/core/v8/RetainedObjectInfo.h" 35 #include <v8-profiler.h> 36 37 namespace blink { 38 39 class Node; 40 41 // Implements v8::RetainedObjectInfo. 42 class RetainedDOMInfo FINAL : public RetainedObjectInfo { 43 public: 44 explicit RetainedDOMInfo(Node* root); 45 virtual ~RetainedDOMInfo(); 46 virtual void Dispose() OVERRIDE; 47 virtual bool IsEquivalent(v8::RetainedObjectInfo* other) OVERRIDE; 48 virtual intptr_t GetHash() OVERRIDE; 49 virtual const char* GetGroupLabel() OVERRIDE; 50 virtual const char* GetLabel() OVERRIDE; 51 virtual intptr_t GetElementCount() OVERRIDE; 52 virtual intptr_t GetEquivalenceClass() OVERRIDE; 53 54 private: 55 // V8 guarantees to keep RetainedObjectInfos alive only during a GC or heap snapshotting round, when renderer 56 // doesn't get control. This allows us to use raw pointers. 57 Node* m_root; 58 }; 59 60 } // namespace blink 61 62 #endif // RetainedDOMInfo_h 63