wtf/wince/MemoryManager.cpp

   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
  35 namespace WTF {
  36
  37 MemoryManager* memoryManager()
  38 {
  39     static MemoryManager mm;
  40     return &mm;
  41 }
  42
  43 MemoryManager::MemoryManager()
  44 : m_allocationCanFail(false)
  45 {
  46 }
  47
  48 MemoryManager::~MemoryManager()
  49 {
  50 }
  51
  52 HBITMAP MemoryManager::createCompatibleBitmap(HDC hdc, int width, int height)
  53 {
  54     return ::CreateCompatibleBitmap(hdc, width, height);
  55 }
  56
  57 HBITMAP MemoryManager::createDIBSection(const BITMAPINFO* pbmi, void** ppvBits)
  58 {
  59     return ::CreateDIBSection(0, pbmi, DIB_RGB_COLORS, ppvBits, 0, 0);
  60 }
  61
  62 void* MemoryManager::m_malloc(size_t size)
  63 {
  64     return malloc(size);
  65 }
  66
  67 void* MemoryManager::m_calloc(size_t num, size_t size)
  68 {
  69     return calloc(num, size);
  70 }
  71
  72 void* MemoryManager::m_realloc(void* p, size_t size)
  73 {
  74     return realloc(p, size);
  75 }
  76
  77 void MemoryManager::m_free(void* p)
  78 {
  79     return free(p);
  80 }
  81
  82 bool MemoryManager::resizeMemory(void*, size_t)
  83 {
  84     return false;
  85 }
  86
  87 void* MemoryManager::allocate64kBlock()
  88 {
  89     return VirtualAlloc(0, 65536, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
  90 }
  91
  92 void MemoryManager::free64kBlock(void* p)
  93 {
  94     VirtualFree(p, 65536, MEM_RELEASE);
  95 }
  96
  97 bool MemoryManager::onIdle(DWORD& timeLimitMs)
  98 {
  99     return false;
 100 }
 101
 102 LPVOID MemoryManager::virtualAlloc(LPVOID lpAddress, DWORD dwSize, DWORD flAllocationType, DWORD flProtect)
 103 {
 104     return ::VirtualAlloc(lpAddress, dwSize, flAllocationType, flProtect);
 105 }
 106
 107 BOOL 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
 115 void *fastMalloc(size_t n) { return malloc(n); }
 116 void *fastCalloc(size_t n_elements, size_t element_size) { return calloc(n_elements, element_size); }
 117 void fastFree(void* p) { return free(p); }
 118 void *fastRealloc(void* p, size_t n) { return realloc(p, n); }
 119
 120 #else
 121
 122 void *fastMalloc(size_t n) { return MemoryManager::m_malloc(n); }
 123 void *fastCalloc(size_t n_elements, size_t element_size) { return MemoryManager::m_calloc(n_elements, element_size); }
 124 void fastFree(void* p) { return MemoryManager::m_free(p); }
 125 void *fastRealloc(void* p, size_t n) { return MemoryManager::m_realloc(p, n); }
 126
 127 #endif
 128
 129 #ifndef NDEBUG
 130 void fastMallocForbid() {}
 131 void fastMallocAllow() {}
 132 #endif
 133
 134 void* fastZeroedMalloc(size_t n)
 135 {
 136     void* p = fastMalloc(n);
 137     if (p)
 138         memset(p, 0, n);
 139     return p;
 140 }
 141
 142 TryMallocReturnValue tryFastMalloc(size_t n)
 143 {
 144     MemoryAllocationCanFail canFail;
 145     return fastMalloc(n);
 146 }
 147
 148 TryMallocReturnValue tryFastZeroedMalloc(size_t n)
 149 {
 150     MemoryAllocationCanFail canFail;
 151     return fastZeroedMalloc(n);
 152 }
 153
 154 TryMallocReturnValue tryFastCalloc(size_t n_elements, size_t element_size)
 155 {
 156     MemoryAllocationCanFail canFail;
 157     return fastCalloc(n_elements, element_size);
 158 }
 159
 160 TryMallocReturnValue tryFastRealloc(void* p, size_t n)
 161 {
 162     MemoryAllocationCanFail canFail;
 163     return fastRealloc(p, n);
 164 }
 165
 166 char* fastStrDup(const char* str)
 167 {
 168     return _strdup(str);
 169 }
 170
 171 }