1/*
2 * Copyright (C) 2013, 2015 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef WriteBarrierBuffer_h
27#define WriteBarrierBuffer_h
28
29#include <wtf/FastMalloc.h>
30
31namespace JSC {
32
33class Heap;
34class JSCell;
35
36class WriteBarrierBuffer {
37public:
38 WriteBarrierBuffer(unsigned capacity);
39 ~WriteBarrierBuffer();
40
41 void add(JSCell*);
42 void flush(Heap&);
43 void reset();
44
45 unsigned* currentIndexAddress()
46 {
47 return &m_currentIndex;
48 }
49
50 unsigned capacity() const
51 {
52 return m_capacity;
53 }
54
55 JSCell** buffer()
56 {
57 return m_buffer;
58 }
59
60private:
61 unsigned m_currentIndex;
62 const unsigned m_capacity;
63 JSCell** const m_buffer;
64};
65
66} // namespace JSC
67
68#endif // WriteBarrierBuffer_h
69