1/*
2 * Copyright (C) 2012 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#include "config.h"
27#include "CopyVisitor.h"
28
29#include "CopiedSpaceInlines.h"
30#include "CopyVisitorInlines.h"
31#include "CopyWorkList.h"
32#include "GCThreadSharedData.h"
33#include "JSCell.h"
34#include "JSObject.h"
35#include "JSCInlines.h"
36#include <wtf/Threading.h>
37
38namespace JSC {
39
40CopyVisitor::CopyVisitor(GCThreadSharedData& shared)
41    : m_shared(shared)
42{
43}
44
45void CopyVisitor::copyFromShared()
46{
47    size_t next, end;
48    m_shared.getNextBlocksToCopy(next, end);
49    while (next < end) {
50        for (; next < end; ++next) {
51            CopiedBlock* block = m_shared.m_blocksToCopy[next];
52            if (!block->hasWorkList())
53                continue;
54
55            CopyWorkList& workList = block->workList();
56            for (CopyWorkList::iterator it = workList.begin(); it != workList.end(); ++it)
57                visitItem(*it);
58
59            ASSERT(!block->liveBytes());
60            m_shared.m_copiedSpace->recycleEvacuatedBlock(block, m_shared.m_vm->heap.operationInProgress());
61        }
62        m_shared.getNextBlocksToCopy(next, end);
63    }
64    ASSERT(next == end);
65}
66
67} // namespace JSC
68