1/*
2 * Copyright (C) 2012, 2013 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 CopiedBlockInlines_h
27#define CopiedBlockInlines_h
28
29#include "ClassInfo.h"
30#include "CopiedBlock.h"
31#include "Heap.h"
32#include "MarkedBlock.h"
33
34namespace JSC {
35
36inline bool CopiedBlock::shouldReportLiveBytes(SpinLockHolder&, JSCell* owner)
37{
38    // We want to add to live bytes if the owner isn't part of the remembered set or
39    // if this block was allocated during the last cycle.
40    // If we always added live bytes we would double count for elements in the remembered
41    // set across collections.
42    // If we didn't always add live bytes to new blocks, we'd get too few.
43    return !Heap::isRemembered(owner) || !m_isOld;
44}
45
46inline void CopiedBlock::reportLiveBytes(SpinLockHolder&, JSCell* owner, CopyToken token, unsigned bytes)
47{
48    checkConsistency();
49#ifndef NDEBUG
50    m_liveObjects++;
51#endif
52    m_liveBytes += bytes;
53    checkConsistency();
54    ASSERT(m_liveBytes <= CopiedBlock::blockSize);
55
56    if (isPinned())
57        return;
58
59    if (!shouldEvacuate()) {
60        pin();
61        return;
62    }
63
64    if (!m_workList)
65        m_workList = adoptPtr(new CopyWorkList(Heap::heap(owner)->blockAllocator()));
66
67    m_workList->append(CopyWorklistItem(owner, token));
68}
69
70inline void CopiedBlock::reportLiveBytesDuringCopying(unsigned bytes)
71{
72    checkConsistency();
73    // This doesn't need to be locked because the thread that calls this function owns the current block.
74    m_isOld = true;
75#ifndef NDEBUG
76    m_liveObjects++;
77#endif
78    m_liveBytes += bytes;
79    checkConsistency();
80    ASSERT(m_liveBytes <= CopiedBlock::blockSize);
81}
82
83} // namespace JSC
84
85#endif // CopiedBlockInlines_h
86