1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef _FX_MEMORY_H_ 8 #define _FX_MEMORY_H_ 9 #ifndef _FX_SYSTEM_H_ 10 #include "fx_system.h" 11 #endif 12 #define FXMEM_NONLEAVE 1 13 #define FXMEM_MOVABLE 2 14 #define FXMEM_DISCARDABLE 4 15 #ifdef __cplusplus 16 extern "C" { 17 #endif 18 typedef struct _FXMEM_SystemMgr { 19 20 void* (*Alloc)(struct _FXMEM_SystemMgr* pMgr, size_t size, int flags); 21 22 void* (*AllocDebug)(struct _FXMEM_SystemMgr* pMgr, size_t size, int flags, FX_LPCSTR file, int line); 23 24 void* (*Realloc)(struct _FXMEM_SystemMgr* pMgr, void* pointer, size_t size, int flags); 25 26 void* (*ReallocDebug)(struct _FXMEM_SystemMgr* pMgr, void* pointer, size_t size, int flags, FX_LPCSTR file, int line); 27 28 void* (*Lock)(struct _FXMEM_SystemMgr* pMgr, void* handle); 29 30 void (*Unlock)(struct _FXMEM_SystemMgr* pMgr, void* handle); 31 32 void (*Free)(struct _FXMEM_SystemMgr* pMgr, void* pointer, int flags); 33 34 void (*Purge)(struct _FXMEM_SystemMgr* pMgr); 35 36 void (*CollectAll)(struct _FXMEM_SystemMgr* pMgr); 37 38 39 void* user; 40 } FXMEM_SystemMgr; 41 FX_DEFINEHANDLE(FXMEM_FoxitMgr) 42 typedef struct _FXMEM_SystemMgr2 { 43 44 FX_BOOL (*More)(struct _FXMEM_SystemMgr2* pMgr, size_t alloc_size, void** new_memory, size_t* new_size); 45 46 void (*Free)(struct _FXMEM_SystemMgr2* pMgr, void* memory); 47 } FXMEM_SystemMgr2; 48 FXMEM_FoxitMgr* FXMEM_CreateMemoryMgr(size_t size, FX_BOOL extensible); 49 void FXMEM_DestroyFoxitMgr(FXMEM_FoxitMgr* pFoxitMgr); 50 void* FXMEM_DefaultAlloc(size_t byte_size, int flags); 51 void* FXMEM_DefaultAlloc2(size_t units, size_t unit_size, int flags); 52 void* FXMEM_DefaultRealloc(void* pointer, size_t new_size, int flags); 53 void* FXMEM_DefaultRealloc2(void* pointer, size_t units, size_t unit_size, int flags); 54 void FXMEM_DefaultFree(void* pointer, int flags); 55 #define FX_Alloc(type, size) (type*)FXMEM_DefaultAlloc2(size, sizeof(type), 0) 56 #define FX_Realloc(type, ptr, size) (type*)FXMEM_DefaultRealloc2(ptr, size, sizeof(type), 0) 57 #define FX_AllocNL(type, size) (type*)FXMEM_DefaultAlloc2(size, sizeof(type), FXMEM_NONLEAVE) 58 #define FX_ReallocNL(type, ptr, size) (type*)FXMEM_DefaultRealloc2(ptr, size, sizeof(type), FXMEM_NONLEAVE) 59 #define FX_Free(pointer) FXMEM_DefaultFree(pointer, 0) 60 #ifdef __cplusplus 61 } 62 #endif 63 #ifdef __cplusplus 64 #if defined(_DEBUG) 65 #define FX_NEW new(__FILE__, __LINE__) 66 #else 67 68 #define FX_NEW new 69 #endif 70 class CFX_Object 71 { 72 public: 73 74 void* operator new (size_t size, FX_LPCSTR file, int line); 75 76 void operator delete (void* p, FX_LPCSTR file, int line); 77 78 void* operator new (size_t size); 79 80 void operator delete (void* p); 81 82 void* operator new[] (size_t size, FX_LPCSTR file, int line); 83 84 void operator delete[] (void* p, FX_LPCSTR file, int line); 85 86 void* operator new[] (size_t size); 87 88 void operator delete[] (void* p); 89 90 void* operator new (size_t, void* buf) 91 { 92 return buf; 93 } 94 95 void operator delete (void*, void*) {} 96 }; 97 #define FX_NEW_VECTOR(Pointer, Class, Count) \ 98 { \ 99 Pointer = FX_Alloc(Class, Count); \ 100 if (Pointer) { \ 101 for (int i = 0; i < (Count); i ++) new (Pointer + i) Class; \ 102 } \ 103 } 104 #define FX_DELETE_VECTOR(Pointer, Class, Count) \ 105 { \ 106 for (int i = 0; i < (Count); i ++) Pointer[i].~Class(); \ 107 FX_Free(Pointer); \ 108 } 109 class CFX_DestructObject : public CFX_Object 110 { 111 public: 112 113 virtual ~CFX_DestructObject() {} 114 }; 115 #ifdef __cplusplus 116 extern "C" { 117 #endif 118 typedef struct _IFX_Allocator { 119 120 void* (*m_AllocDebug)(struct _IFX_Allocator* pAllocator, size_t size, FX_LPCSTR file, int line); 121 122 void* (*m_Alloc)(struct _IFX_Allocator* pAllocator, size_t size); 123 124 void* (*m_ReallocDebug)(struct _IFX_Allocator* pAllocator, void* p, size_t size, FX_LPCSTR file, int line); 125 126 void* (*m_Realloc)(struct _IFX_Allocator* pAllocator, void* p, size_t size); 127 128 void (*m_Free)(struct _IFX_Allocator* pAllocator, void* p); 129 } IFX_Allocator; 130 IFX_Allocator* FXMEM_GetDefAllocator(); 131 #ifdef __cplusplus 132 } 133 #endif 134 #ifdef _DEBUG 135 136 #define FX_Allocator_Alloc(fxAllocator, type, size) \ 137 ((fxAllocator) ? (type*)(fxAllocator)->m_AllocDebug((fxAllocator), (size) * sizeof(type), __FILE__, __LINE__) : (FX_Alloc(type, size))) 138 139 #define FX_Allocator_Realloc(fxAllocator, type, ptr, new_size) \ 140 ((fxAllocator) ? (type*)(fxAllocator)->m_ReallocDebug((fxAllocator), (ptr), (new_size) * sizeof(type), __FILE__, __LINE__) : (FX_Realloc(type, ptr, new_size))) 141 #else 142 143 #define FX_Allocator_Alloc(fxAllocator, type, size) \ 144 ((fxAllocator) ? (type*)(fxAllocator)->m_Alloc((fxAllocator), (size) * sizeof(type)) : (FX_Alloc(type, size))) 145 146 #define FX_Allocator_Realloc(fxAllocator, type, ptr, new_size) \ 147 ((fxAllocator) ? (type*)(fxAllocator)->m_Realloc((fxAllocator), (ptr), (new_size) * sizeof(type)) : (FX_Realloc(type, ptr, new_size))) 148 #endif 149 #define FX_Allocator_Free(fxAllocator, ptr) \ 150 ((fxAllocator) ? (fxAllocator)->m_Free((fxAllocator), (ptr)) : (FX_Free(ptr))) 151 inline void* operator new(size_t size, IFX_Allocator* fxAllocator) 152 { 153 return (void*)FX_Allocator_Alloc(fxAllocator, FX_BYTE, size); 154 } 155 inline void operator delete(void* ptr, IFX_Allocator* fxAllocator) 156 { 157 } 158 #define FX_NewAtAllocator(fxAllocator) \ 159 ::new(fxAllocator) 160 #define FX_DeleteAtAllocator(pointer, fxAllocator, __class__) \ 161 (pointer)->~__class__(); \ 162 FX_Allocator_Free(fxAllocator, pointer) 163 class CFX_AllocObject 164 { 165 public: 166 167 void* operator new (size_t size, IFX_Allocator* pAllocator, FX_LPCSTR file, int line); 168 #ifndef _FX_NO_EXCEPTION_ 169 170 void operator delete (void* p, IFX_Allocator* pAllocator, FX_LPCSTR file, int line); 171 #endif 172 173 void* operator new (size_t size, IFX_Allocator* pAllocator); 174 175 void operator delete (void* p); 176 #ifndef _FX_NO_EXCEPTION_ 177 178 void operator delete (void* p, IFX_Allocator* pAllocator); 179 #endif 180 181 void* operator new (size_t, void* buf) 182 { 183 return buf; 184 } 185 #ifndef _FX_NO_EXCEPTION_ 186 187 void operator delete (void*, void*) {} 188 #endif 189 190 IFX_Allocator* GetAllocator() const 191 { 192 return m_pAllocator; 193 } 194 private: 195 196 void* operator new[] (size_t size, IFX_Allocator* pAllocator, FX_LPCSTR file, int line) 197 { 198 return operator new(size, pAllocator, file, line); 199 } 200 #ifndef _FX_NO_EXCEPTION_ 201 202 void operator delete[] (void* p, IFX_Allocator* pAllocator, FX_LPCSTR file, int line) {} 203 #endif 204 205 void* operator new[] (size_t size, IFX_Allocator* pAllocator) 206 { 207 return operator new(size, pAllocator); 208 } 209 210 void operator delete[] (void* p) {} 211 #ifndef _FX_NO_EXCEPTION_ 212 213 void operator delete[] (void* p, IFX_Allocator* pAllocator) {} 214 #endif 215 protected: 216 217 IFX_Allocator* m_pAllocator; 218 }; 219 #if defined(_DEBUG) 220 #define FX_NEWAT(pAllocator) new(pAllocator, __FILE__, __LINE__) 221 #else 222 223 #define FX_NEWAT(pAllocator) new(pAllocator) 224 #endif 225 class CFX_GrowOnlyPool : public IFX_Allocator, public CFX_Object 226 { 227 public: 228 229 CFX_GrowOnlyPool(IFX_Allocator* pAllocator = NULL, size_t trunk_size = 16384); 230 231 ~CFX_GrowOnlyPool(); 232 233 void SetAllocator(IFX_Allocator* pAllocator); 234 235 void SetTrunkSize(size_t trunk_size) 236 { 237 m_TrunkSize = trunk_size; 238 } 239 240 void* AllocDebug(size_t size, FX_LPCSTR file, int line) 241 { 242 return Alloc(size); 243 } 244 245 void* Alloc(size_t size); 246 247 void* ReallocDebug(void* p, size_t new_size, FX_LPCSTR file, int line) 248 { 249 return NULL; 250 } 251 252 void* Realloc(void* p, size_t new_size) 253 { 254 return NULL; 255 } 256 257 void Free(void*) {} 258 259 void FreeAll(); 260 private: 261 262 size_t m_TrunkSize; 263 264 void* m_pFirstTrunk; 265 266 IFX_Allocator* m_pAllocator; 267 }; 268 #endif 269 #ifdef __cplusplus 270 extern "C" { 271 #endif 272 #define FX_FIXEDMEM_PAGESIZE (4096 * 16) 273 #define FX_FIXEDMEM_MIDBLOCKSIZE (4096) 274 typedef struct _FX_MEMCONFIG { 275 276 size_t nPageNum_Init8; 277 278 size_t nPageNum_Init16; 279 280 size_t nPageNum_Init32; 281 282 size_t nPageNum_More16; 283 284 size_t nPageNum_More32; 285 286 size_t nPageSize_Mid; 287 288 size_t nPageNum_InitMid; 289 290 size_t nPageNum_MoreMid; 291 292 size_t nPageSize_Large; 293 294 size_t nPageSize_Alone; 295 } FX_MEMCONFIG; 296 void FXMEM_SetConfig(const FX_MEMCONFIG* memConfig); 297 #ifdef __cplusplus 298 } 299 #endif 300 #endif 301
