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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_H_
#define _FX_MEMORY_H_
#ifndef _FX_SYSTEM_H_
#include "fx_system.h"
#endif
#define FXMEM_NONLEAVE 1
#define FXMEM_MOVABLE 2
#define FXMEM_DISCARDABLE 4
#ifdef __cplusplus
extern "C" {
#endif
typedef struct _FXMEM_SystemMgr {
void* (*Alloc)(struct _FXMEM_SystemMgr* pMgr, size_t size, int flags);
void* (*AllocDebug)(struct _FXMEM_SystemMgr* pMgr, size_t size, int flags, FX_LPCSTR file, int line);
void* (*Realloc)(struct _FXMEM_SystemMgr* pMgr, void* pointer, size_t size, int flags);
void* (*ReallocDebug)(struct _FXMEM_SystemMgr* pMgr, void* pointer, size_t size, int flags, FX_LPCSTR file, int line);
void* (*Lock)(struct _FXMEM_SystemMgr* pMgr, void* handle);
void (*Unlock)(struct _FXMEM_SystemMgr* pMgr, void* handle);
void (*Free)(struct _FXMEM_SystemMgr* pMgr, void* pointer, int flags);
void (*Purge)(struct _FXMEM_SystemMgr* pMgr);
void (*CollectAll)(struct _FXMEM_SystemMgr* pMgr);
void* user;
} FXMEM_SystemMgr;
FX_DEFINEHANDLE(FXMEM_FoxitMgr)
typedef struct _FXMEM_SystemMgr2 {
FX_BOOL (*More)(struct _FXMEM_SystemMgr2* pMgr, size_t alloc_size, void** new_memory, size_t* new_size);
void (*Free)(struct _FXMEM_SystemMgr2* pMgr, void* memory);
} FXMEM_SystemMgr2;
FXMEM_FoxitMgr* FXMEM_CreateMemoryMgr(size_t size, FX_BOOL extensible);
void FXMEM_DestroyFoxitMgr(FXMEM_FoxitMgr* pFoxitMgr);
void* FXMEM_DefaultAlloc(size_t byte_size, int flags);
void* FXMEM_DefaultAlloc2(size_t units, size_t unit_size, int flags);
void* FXMEM_DefaultRealloc(void* pointer, size_t new_size, int flags);
void* FXMEM_DefaultRealloc2(void* pointer, size_t units, size_t unit_size, int flags);
void FXMEM_DefaultFree(void* pointer, int flags);
#define FX_Alloc(type, size) (type*)FXMEM_DefaultAlloc2(size, sizeof(type), 0)
#define FX_Realloc(type, ptr, size) (type*)FXMEM_DefaultRealloc2(ptr, size, sizeof(type), 0)
#define FX_AllocNL(type, size) (type*)FXMEM_DefaultAlloc2(size, sizeof(type), FXMEM_NONLEAVE)
#define FX_ReallocNL(type, ptr, size) (type*)FXMEM_DefaultRealloc2(ptr, size, sizeof(type), FXMEM_NONLEAVE)
#define FX_Free(pointer) FXMEM_DefaultFree(pointer, 0)
#ifdef __cplusplus
}
#endif
#ifdef __cplusplus
#if defined(_DEBUG)
#define FX_NEW new(__FILE__, __LINE__)
#else
#define FX_NEW new
#endif
class CFX_Object
{
public:
void* operator new (size_t size, FX_LPCSTR file, int line);
void operator delete (void* p, FX_LPCSTR file, int line);
void* operator new (size_t size);
void operator delete (void* p);
void* operator new[] (size_t size, FX_LPCSTR file, int line);
void operator delete[] (void* p, FX_LPCSTR file, int line);
void* operator new[] (size_t size);
void operator delete[] (void* p);
void* operator new (size_t, void* buf)
{
return buf;
}
void operator delete (void*, void*) {}
};
#define FX_NEW_VECTOR(Pointer, Class, Count) \
{ \
Pointer = FX_Alloc(Class, Count); \
if (Pointer) { \
for (int i = 0; i < (Count); i ++) new (Pointer + i) Class; \
} \
}
#define FX_DELETE_VECTOR(Pointer, Class, Count) \
{ \
for (int i = 0; i < (Count); i ++) Pointer[i].~Class(); \
FX_Free(Pointer); \
}
class CFX_DestructObject : public CFX_Object
{
public:
virtual ~CFX_DestructObject() {}
};
#ifdef __cplusplus
extern "C" {
#endif
typedef struct _IFX_Allocator {
void* (*m_AllocDebug)(struct _IFX_Allocator* pAllocator, size_t size, FX_LPCSTR file, int line);
void* (*m_Alloc)(struct _IFX_Allocator* pAllocator, size_t size);
void* (*m_ReallocDebug)(struct _IFX_Allocator* pAllocator, void* p, size_t size, FX_LPCSTR file, int line);
void* (*m_Realloc)(struct _IFX_Allocator* pAllocator, void* p, size_t size);
void (*m_Free)(struct _IFX_Allocator* pAllocator, void* p);
} IFX_Allocator;
IFX_Allocator* FXMEM_GetDefAllocator();
#ifdef __cplusplus
}
#endif
#ifdef _DEBUG
#define FX_Allocator_Alloc(fxAllocator, type, size) \
((fxAllocator) ? (type*)(fxAllocator)->m_AllocDebug((fxAllocator), (size) * sizeof(type), __FILE__, __LINE__) : (FX_Alloc(type, size)))
#define FX_Allocator_Realloc(fxAllocator, type, ptr, new_size) \
((fxAllocator) ? (type*)(fxAllocator)->m_ReallocDebug((fxAllocator), (ptr), (new_size) * sizeof(type), __FILE__, __LINE__) : (FX_Realloc(type, ptr, new_size)))
#else
#define FX_Allocator_Alloc(fxAllocator, type, size) \
((fxAllocator) ? (type*)(fxAllocator)->m_Alloc((fxAllocator), (size) * sizeof(type)) : (FX_Alloc(type, size)))
#define FX_Allocator_Realloc(fxAllocator, type, ptr, new_size) \
((fxAllocator) ? (type*)(fxAllocator)->m_Realloc((fxAllocator), (ptr), (new_size) * sizeof(type)) : (FX_Realloc(type, ptr, new_size)))
#endif
#define FX_Allocator_Free(fxAllocator, ptr) \
((fxAllocator) ? (fxAllocator)->m_Free((fxAllocator), (ptr)) : (FX_Free(ptr)))
inline void* operator new(size_t size, IFX_Allocator* fxAllocator)
{
return (void*)FX_Allocator_Alloc(fxAllocator, FX_BYTE, size);
}
inline void operator delete(void* ptr, IFX_Allocator* fxAllocator)
{
}
#define FX_NewAtAllocator(fxAllocator) \
::new(fxAllocator)
#define FX_DeleteAtAllocator(pointer, fxAllocator, __class__) \
(pointer)->~__class__(); \
FX_Allocator_Free(fxAllocator, pointer)
class CFX_AllocObject
{
public:
void* operator new (size_t size, IFX_Allocator* pAllocator, FX_LPCSTR file, int line);
#ifndef _FX_NO_EXCEPTION_
void operator delete (void* p, IFX_Allocator* pAllocator, FX_LPCSTR file, int line);
#endif
void* operator new (size_t size, IFX_Allocator* pAllocator);
void operator delete (void* p);
#ifndef _FX_NO_EXCEPTION_
void operator delete (void* p, IFX_Allocator* pAllocator);
#endif
void* operator new (size_t, void* buf)
{
return buf;
}
#ifndef _FX_NO_EXCEPTION_
void operator delete (void*, void*) {}
#endif
IFX_Allocator* GetAllocator() const
{
return m_pAllocator;
}
private:
void* operator new[] (size_t size, IFX_Allocator* pAllocator, FX_LPCSTR file, int line)
{
return operator new(size, pAllocator, file, line);
}
#ifndef _FX_NO_EXCEPTION_
void operator delete[] (void* p, IFX_Allocator* pAllocator, FX_LPCSTR file, int line) {}
#endif
void* operator new[] (size_t size, IFX_Allocator* pAllocator)
{
return operator new(size, pAllocator);
}
void operator delete[] (void* p) {}
#ifndef _FX_NO_EXCEPTION_
void operator delete[] (void* p, IFX_Allocator* pAllocator) {}
#endif
protected:
IFX_Allocator* m_pAllocator;
};
#if defined(_DEBUG)
#define FX_NEWAT(pAllocator) new(pAllocator, __FILE__, __LINE__)
#else
#define FX_NEWAT(pAllocator) new(pAllocator)
#endif
class CFX_GrowOnlyPool : public IFX_Allocator, public CFX_Object
{
public:
CFX_GrowOnlyPool(IFX_Allocator* pAllocator = NULL, size_t trunk_size = 16384);
~CFX_GrowOnlyPool();
void SetAllocator(IFX_Allocator* pAllocator);
void SetTrunkSize(size_t trunk_size)
{
m_TrunkSize = trunk_size;
}
void* AllocDebug(size_t size, FX_LPCSTR file, int line)
{
return Alloc(size);
}
void* Alloc(size_t size);
void* ReallocDebug(void* p, size_t new_size, FX_LPCSTR file, int line)
{
return NULL;
}
void* Realloc(void* p, size_t new_size)
{
return NULL;
}
void Free(void*) {}
void FreeAll();
private:
size_t m_TrunkSize;
void* m_pFirstTrunk;
IFX_Allocator* m_pAllocator;
};
#endif
#ifdef __cplusplus
extern "C" {
#endif
#define FX_FIXEDMEM_PAGESIZE (4096 * 16)
#define FX_FIXEDMEM_MIDBLOCKSIZE (4096)
typedef struct _FX_MEMCONFIG {
size_t nPageNum_Init8;
size_t nPageNum_Init16;
size_t nPageNum_Init32;
size_t nPageNum_More16;
size_t nPageNum_More32;
size_t nPageSize_Mid;
size_t nPageNum_InitMid;
size_t nPageNum_MoreMid;
size_t nPageSize_Large;
size_t nPageSize_Alone;
} FX_MEMCONFIG;
void FXMEM_SetConfig(const FX_MEMCONFIG* memConfig);
#ifdef __cplusplus
}
#endif
#endif
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