1/*
2 * Copyright (C) 2009 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef ConservativeRoots_h
27#define ConservativeRoots_h
28
29#include "Heap.h"
30
31namespace JSC {
32
33class CodeBlockSet;
34class JITStubRoutineSet;
35class JSCell;
36
37class ConservativeRoots {
38public:
39 ConservativeRoots(MarkedBlockSet*, CopiedSpace*);
40 ~ConservativeRoots();
41
42 void add(void* begin, void* end);
43 void add(void* begin, void* end, JITStubRoutineSet&);
44 void add(void* begin, void* end, JITStubRoutineSet&, CodeBlockSet&);
45
46 size_t size();
47 JSCell** roots();
48
49private:
50 static const size_t inlineCapacity = 128;
51 static const size_t nonInlineCapacity = 8192 / sizeof(JSCell*);
52
53 template<typename MarkHook>
54 void genericAddPointer(void*, TinyBloomFilter, MarkHook&);
55
56 template<typename MarkHook>
57 void genericAddSpan(void*, void* end, MarkHook&);
58
59 void grow();
60
61 JSCell** m_roots;
62 size_t m_size;
63 size_t m_capacity;
64 MarkedBlockSet* m_blocks;
65 CopiedSpace* m_copiedSpace;
66 JSCell* m_inlineRoots[inlineCapacity];
67};
68
69inline size_t ConservativeRoots::size()
70{
71 return m_size;
72}
73
74inline JSCell** ConservativeRoots::roots()
75{
76 return m_roots;
77}
78
79} // namespace JSC
80
81#endif // ConservativeRoots_h
82