1/* 2 * Copyright (C) 2014 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#include "config.h" 32#include "platform/heap/Visitor.h" 33 34#include "platform/heap/Handle.h" 35#include "platform/heap/Heap.h" 36 37namespace blink { 38 39#if ENABLE(ASSERT) 40void Visitor::checkGCInfo(const void* payload, const GCInfo* gcInfo) 41{ 42 FinalizedHeapObjectHeader::fromPayload(payload)->checkHeader(); 43#if !defined(COMPONENT_BUILD) 44 // On component builds we cannot compare the gcInfos as they are statically 45 // defined in each of the components and hence will not match. 46 BaseHeapPage* page = pageHeaderFromObject(payload); 47 ASSERT(page->orphaned() || FinalizedHeapObjectHeader::fromPayload(payload)->gcInfo() == gcInfo); 48#endif 49} 50 51#define DEFINE_VISITOR_CHECK_MARKER(Type) \ 52 void Visitor::checkGCInfo(const Type* payload, const GCInfo* gcInfo) \ 53 { \ 54 HeapObjectHeader::fromPayload(payload)->checkHeader(); \ 55 Type* object = const_cast<Type*>(payload); \ 56 BaseHeapPage* page = pageHeaderFromObject(object); \ 57 ASSERT(page->orphaned() || page->gcInfo() == gcInfo); \ 58 } 59 60FOR_EACH_TYPED_HEAP(DEFINE_VISITOR_CHECK_MARKER) 61#undef DEFINE_VISITOR_CHECK_MARKER 62#endif 63 64} 65