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. 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#pragma once
27
28#include "HandleBlock.h"
29#include <wtf/FastMalloc.h>
30
31namespace JSC {
32
33inline HandleBlock* HandleBlock::create(HandleSet* handleSet)
34{
35 return new (NotNull, fastAlignedMalloc(blockSize, blockSize)) HandleBlock(handleSet);
36}
37
38inline void HandleBlock::destroy(HandleBlock* block)
39{
40 block->~HandleBlock();
41 fastAlignedFree(block);
42}
43
44inline HandleBlock::HandleBlock(HandleSet* handleSet)
45 : DoublyLinkedListNode<HandleBlock>()
46 , m_handleSet(handleSet)
47{
48}
49
50inline char* HandleBlock::payloadEnd()
51{
52 return reinterpret_cast<char*>(this) + blockSize;
53}
54
55inline char* HandleBlock::payload()
56{
57 return reinterpret_cast<char*>(this) + WTF::roundUpToMultipleOf<sizeof(double)>(sizeof(HandleBlock));
58}
59
60inline HandleNode* HandleBlock::nodes()
61{
62 return reinterpret_cast_ptr<HandleNode*>(payload());
63}
64
65inline HandleNode* HandleBlock::nodeAtIndex(unsigned i)
66{
67 ASSERT(i < nodeCapacity());
68 return &nodes()[i];
69}
70
71inline unsigned HandleBlock::nodeCapacity()
72{
73 return (payloadEnd() - payload()) / sizeof(HandleNode);
74}
75
76} // namespace JSC
77