1/*
2 * Copyright (C) 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. ``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 GCIncomingRefCountedSetInlines_h
27#define GCIncomingRefCountedSetInlines_h
28
29#include "GCIncomingRefCountedSet.h"
30#include "VM.h"
31
32namespace JSC {
33
34template<typename T>
35GCIncomingRefCountedSet<T>::GCIncomingRefCountedSet()
36    : m_bytes(0)
37{
38}
39
40template<typename T>
41GCIncomingRefCountedSet<T>::~GCIncomingRefCountedSet()
42{
43    for (size_t i = m_vector.size(); i--;)
44        m_vector[i]->filterIncomingReferences(removeAll);
45}
46
47template<typename T>
48bool GCIncomingRefCountedSet<T>::addReference(JSCell* cell, T* object)
49{
50    if (!object->addIncomingReference(cell)) {
51        ASSERT(object->isDeferred());
52        ASSERT(object->numberOfIncomingReferences());
53        return false;
54    }
55    m_vector.append(object);
56    m_bytes += object->gcSizeEstimateInBytes();
57    ASSERT(object->isDeferred());
58    ASSERT(object->numberOfIncomingReferences());
59    return true;
60}
61
62template<typename T>
63void GCIncomingRefCountedSet<T>::sweep()
64{
65    for (size_t i = 0; i < m_vector.size(); ++i) {
66        T* object = m_vector[i];
67        size_t size = object->gcSizeEstimateInBytes();
68        ASSERT(object->isDeferred());
69        ASSERT(object->numberOfIncomingReferences());
70        if (!object->filterIncomingReferences(removeDead))
71            continue;
72        m_bytes -= size;
73        m_vector[i--] = m_vector.last();
74        m_vector.removeLast();
75    }
76}
77
78template<typename T>
79bool GCIncomingRefCountedSet<T>::removeAll(JSCell*)
80{
81    return false;
82}
83
84template<typename T>
85bool GCIncomingRefCountedSet<T>::removeDead(JSCell* cell)
86{
87    return Heap::isMarked(cell);
88}
89
90} // namespace JSC
91
92#endif // GCIncomingRefCountedSetInlines_h
93