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 8 #define _FX_MEMORY 9 10 #include "core/include/fxcrt/fx_memory.h" // For FX_Alloc(). 11 12 class IFX_MEMAllocator; 13 class CFX_Target; 14 enum FX_ALLOCTYPE { 15 FX_ALLOCTYPE_Default = 0, 16 FX_ALLOCTYPE_Static, 17 FX_ALLOCTYPE_Fixed, 18 FX_ALLOCTYPE_Dynamic, 19 }; 20 21 class IFX_MEMAllocator { 22 public: 23 virtual ~IFX_MEMAllocator() {} 24 virtual void Release() = 0; 25 virtual void* Alloc(size_t size) = 0; 26 virtual void Free(void* pBlock) = 0; 27 virtual size_t GetBlockSize() const = 0; 28 virtual size_t GetDefChunkSize() const = 0; 29 virtual size_t SetDefChunkSize(size_t size) = 0; 30 virtual size_t GetCurrentDataSize() const = 0; 31 }; 32 33 IFX_MEMAllocator* FX_CreateAllocator(FX_ALLOCTYPE eType, 34 size_t chunkSize, 35 size_t blockSize); 36 class CFX_Target { 37 public: 38 virtual ~CFX_Target() {} 39 void* operator new(size_t size) { return FX_Alloc(uint8_t, size); } 40 void operator delete(void* p) { FX_Free(p); } 41 void* operator new(size_t size, IFX_MEMAllocator* pAllocator) { 42 return pAllocator->Alloc(size); 43 } 44 void operator delete(void* p, IFX_MEMAllocator* pAllocator) { 45 pAllocator->Free(p); 46 } 47 void* operator new(size_t size, void* place) { return place; } 48 void operator delete(void* p, void* place) {} 49 }; 50 #define FXTARGET_NewWith(__allocator__) new (__allocator__) 51 #define FXTARGET_DeleteWith(__class__, __allocator__, pointer) \ 52 { \ 53 (pointer)->~__class__(); \ 54 (pointer)->operator delete((pointer), (__allocator__)); \ 55 } 56 #endif 57
