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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef _FX_MEMORY
#define _FX_MEMORY
class IFX_MEMAllocator;
class CFX_Target;
enum FX_ALLOCTYPE {
FX_ALLOCTYPE_Default = 0,
FX_ALLOCTYPE_Static,
FX_ALLOCTYPE_Fixed,
FX_ALLOCTYPE_Dynamic,
};
class IFX_MEMAllocator {
public:
virtual ~IFX_MEMAllocator() {}
virtual void Release() = 0;
virtual void* Alloc(size_t size) = 0;
virtual void Free(void* pBlock) = 0;
virtual size_t GetBlockSize() const = 0;
virtual size_t GetDefChunkSize() const = 0;
virtual size_t SetDefChunkSize(size_t size) = 0;
virtual size_t GetCurrentDataSize() const = 0;
};
IFX_MEMAllocator* FX_CreateAllocator(FX_ALLOCTYPE eType,
size_t chunkSize,
size_t blockSize);
class CFX_Target {
public:
virtual ~CFX_Target() {}
void* operator new(size_t size) { return FX_Alloc(uint8_t, size); }
void operator delete(void* p) { FX_Free(p); }
void* operator new(size_t size, IFX_MEMAllocator* pAllocator) {
return pAllocator->Alloc(size);
}
void operator delete(void* p, IFX_MEMAllocator* pAllocator) {
pAllocator->Free(p);
}
void* operator new(size_t size, void* place) { return place; }
void operator delete(void* p, void* place) {}
};
#define FXTARGET_NewWith(__allocator__) new (__allocator__)
#define FXTARGET_DeleteWith(__class__, __allocator__, pointer) \
{ \
(pointer)->~__class__(); \
(pointer)->operator delete((pointer), (__allocator__)); \
}
#endif
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