1/*
2 * Copyright (C) 2008-2009 Torch Mobile Inc.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20#include "config.h"
21#include "MemoryManager.h"
22
23#undef malloc
24#undef calloc
25#undef realloc
26#undef free
27#undef strdup
28#undef _strdup
29#undef VirtualAlloc
30#undef VirtualFree
31
32#include <malloc.h>
33#include <windows.h>
34
35namespace WTF {
36
37MemoryManager* memoryManager()
38{
39    static MemoryManager mm;
40    return &mm;
41}
42
43MemoryManager::MemoryManager()
44: m_allocationCanFail(false)
45{
46}
47
48MemoryManager::~MemoryManager()
49{
50}
51
52HBITMAP MemoryManager::createCompatibleBitmap(HDC hdc, int width, int height)
53{
54    return ::CreateCompatibleBitmap(hdc, width, height);
55}
56
57HBITMAP MemoryManager::createDIBSection(const BITMAPINFO* pbmi, void** ppvBits)
58{
59    return ::CreateDIBSection(0, pbmi, DIB_RGB_COLORS, ppvBits, 0, 0);
60}
61
62void* MemoryManager::m_malloc(size_t size)
63{
64    return malloc(size);
65}
66
67void* MemoryManager::m_calloc(size_t num, size_t size)
68{
69    return calloc(num, size);
70}
71
72void* MemoryManager::m_realloc(void* p, size_t size)
73{
74    return realloc(p, size);
75}
76
77void MemoryManager::m_free(void* p)
78{
79    return free(p);
80}
81
82bool MemoryManager::resizeMemory(void*, size_t)
83{
84    return false;
85}
86
87void* MemoryManager::allocate64kBlock()
88{
89    return VirtualAlloc(0, 65536, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
90}
91
92void MemoryManager::free64kBlock(void* p)
93{
94    VirtualFree(p, 65536, MEM_RELEASE);
95}
96
97bool MemoryManager::onIdle(DWORD& timeLimitMs)
98{
99    return false;
100}
101
102LPVOID MemoryManager::virtualAlloc(LPVOID lpAddress, DWORD dwSize, DWORD flAllocationType, DWORD flProtect)
103{
104    return ::VirtualAlloc(lpAddress, dwSize, flAllocationType, flProtect);
105}
106
107BOOL MemoryManager::virtualFree(LPVOID lpAddress, DWORD dwSize, DWORD dwFreeType)
108{
109    return ::VirtualFree(lpAddress, dwSize, dwFreeType);
110}
111
112
113#if defined(USE_SYSTEM_MALLOC) && USE_SYSTEM_MALLOC
114
115void *fastMalloc(size_t n) { return malloc(n); }
116void *fastCalloc(size_t n_elements, size_t element_size) { return calloc(n_elements, element_size); }
117void fastFree(void* p) { return free(p); }
118void *fastRealloc(void* p, size_t n) { return realloc(p, n); }
119
120#else
121
122void *fastMalloc(size_t n) { return MemoryManager::m_malloc(n); }
123void *fastCalloc(size_t n_elements, size_t element_size) { return MemoryManager::m_calloc(n_elements, element_size); }
124void fastFree(void* p) { return MemoryManager::m_free(p); }
125void *fastRealloc(void* p, size_t n) { return MemoryManager::m_realloc(p, n); }
126
127#endif
128
129#ifndef NDEBUG
130void fastMallocForbid() {}
131void fastMallocAllow() {}
132#endif
133
134void* fastZeroedMalloc(size_t n)
135{
136    void* p = fastMalloc(n);
137    if (p)
138        memset(p, 0, n);
139    return p;
140}
141
142TryMallocReturnValue tryFastMalloc(size_t n)
143{
144    MemoryAllocationCanFail canFail;
145    return fastMalloc(n);
146}
147
148TryMallocReturnValue tryFastZeroedMalloc(size_t n)
149{
150    MemoryAllocationCanFail canFail;
151    return fastZeroedMalloc(n);
152}
153
154TryMallocReturnValue tryFastCalloc(size_t n_elements, size_t element_size)
155{
156    MemoryAllocationCanFail canFail;
157    return fastCalloc(n_elements, element_size);
158}
159
160TryMallocReturnValue tryFastRealloc(void* p, size_t n)
161{
162    MemoryAllocationCanFail canFail;
163    return fastRealloc(p, n);
164}
165
166char* fastStrDup(const char* str)
167{
168    return _strdup(str);
169}
170
171}