1/*
2 * Copyright (C) 2009, 2010 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#include "config.h"
27#include "ParserArena.h"
28
29#include "Nodes.h"
30#include "JSCInlines.h"
31
32namespace JSC {
33
34ParserArena::ParserArena()
35 : m_freeableMemory(0)
36 , m_freeablePoolEnd(0)
37{
38}
39
40inline void* ParserArena::freeablePool()
41{
42 ASSERT(m_freeablePoolEnd);
43 return m_freeablePoolEnd - freeablePoolSize;
44}
45
46inline void ParserArena::deallocateObjects()
47{
48 size_t size = m_deletableObjects.size();
49 for (size_t i = 0; i < size; ++i)
50 m_deletableObjects[i]->~ParserArenaDeletable();
51
52 if (m_freeablePoolEnd)
53 fastFree(freeablePool());
54
55 size = m_freeablePools.size();
56 for (size_t i = 0; i < size; ++i)
57 fastFree(m_freeablePools[i]);
58}
59
60ParserArena::~ParserArena()
61{
62 deallocateObjects();
63}
64
65void ParserArena::allocateFreeablePool()
66{
67 if (m_freeablePoolEnd)
68 m_freeablePools.append(freeablePool());
69
70 char* pool = static_cast<char*>(fastMalloc(freeablePoolSize));
71 m_freeableMemory = pool;
72 m_freeablePoolEnd = pool + freeablePoolSize;
73 ASSERT(freeablePool() == pool);
74}
75
76}
77