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
37 namespace blink {
38
39 #if ENABLE(ASSERT)
checkGCInfo(const void * payload,const GCInfo * gcInfo)40 void 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
60 FOR_EACH_TYPED_HEAP(DEFINE_VISITOR_CHECK_MARKER)
61 #undef DEFINE_VISITOR_CHECK_MARKER
62 #endif
63
64 }
65