mirror of
https://github.com/bkaradzic/bx.git
synced 2026-02-18 04:53:06 +01:00
142 lines
3.3 KiB
C++
142 lines
3.3 KiB
C++
/*
|
|
* Copyright 2010-2024 Branimir Karadzic. All rights reserved.
|
|
* License: https://github.com/bkaradzic/bx/blob/master/LICENSE
|
|
*/
|
|
|
|
#ifndef BX_ALLOCATOR_H_HEADER_GUARD
|
|
#define BX_ALLOCATOR_H_HEADER_GUARD
|
|
|
|
#include "bx.h"
|
|
#include "uint32_t.h"
|
|
|
|
#define BX_NEW(_allocator, _type) BX_PLACEMENT_NEW(bx::alloc(_allocator, sizeof(_type) ), _type)
|
|
#define BX_ALIGNED_NEW(_allocator, _type, _align) BX_PLACEMENT_NEW(bx::alloc(_allocator, sizeof(_type), _align), _type)
|
|
#define BX_PLACEMENT_NEW(_ptr, _type) ::new(bx::PlacementNew, _ptr) _type
|
|
|
|
void* operator new(size_t, bx::PlacementNewTag, void* _ptr);
|
|
void operator delete(void*, bx::PlacementNewTag, void*) throw();
|
|
|
|
namespace bx
|
|
{
|
|
/// Abstract allocator interface.
|
|
///
|
|
struct BX_NO_VTABLE AllocatorI
|
|
{
|
|
///
|
|
virtual ~AllocatorI() = 0;
|
|
|
|
/// Allocates, resizes, or frees memory block.
|
|
///
|
|
/// @remark
|
|
/// - Allocate memory block: _ptr == NULL && size > 0
|
|
/// - Resize memory block: _ptr != NULL && size > 0
|
|
/// - Free memory block: _ptr != NULL && size == 0
|
|
///
|
|
/// @param[in] _ptr If _ptr is NULL new block will be allocated. If _ptr is not-NULL, and
|
|
/// _size is not 0, memory block will be resized.
|
|
/// @param[in] _size If _ptr is set, and _size is 0, memory will be freed.
|
|
/// @param[in] _align Alignment.
|
|
/// @param[in] _filePath Debug file path info.
|
|
/// @param[in] _line Debug file line info.
|
|
///
|
|
virtual void* realloc(
|
|
void* _ptr
|
|
, size_t _size
|
|
, size_t _align
|
|
, const char* _filePath
|
|
, uint32_t _line
|
|
) = 0;
|
|
};
|
|
|
|
///
|
|
class DefaultAllocator : public AllocatorI
|
|
{
|
|
public:
|
|
///
|
|
DefaultAllocator();
|
|
|
|
///
|
|
virtual ~DefaultAllocator();
|
|
|
|
///
|
|
virtual void* realloc(
|
|
void* _ptr
|
|
, size_t _size
|
|
, size_t _align
|
|
, const char* _filePath
|
|
, uint32_t _line
|
|
) override;
|
|
};
|
|
|
|
/// Aligns pointer to nearest next aligned address. _align must be power of two.
|
|
void* alignPtr(
|
|
void* _ptr
|
|
, size_t _extra
|
|
, size_t _align = 0
|
|
);
|
|
|
|
/// Allocate memory.
|
|
void* alloc(
|
|
AllocatorI* _allocator
|
|
, size_t _size
|
|
, size_t _align = 0
|
|
, const Location& _location = Location::current()
|
|
);
|
|
|
|
/// Free memory.
|
|
void free(
|
|
AllocatorI* _allocator
|
|
, void* _ptr
|
|
, size_t _align = 0
|
|
, const Location& _location = Location::current()
|
|
);
|
|
|
|
/// Resize memory block.
|
|
void* realloc(
|
|
AllocatorI* _allocator
|
|
, void* _ptr
|
|
, size_t _size
|
|
, size_t _align = 0
|
|
, const Location& _location = Location::current()
|
|
);
|
|
|
|
/// Allocate memory with specific alignment.
|
|
void* alignedAlloc(
|
|
AllocatorI* _allocator
|
|
, size_t _size
|
|
, size_t _align
|
|
, const Location& _location = Location::current()
|
|
);
|
|
|
|
/// Free memory that was allocated with aligned allocator.
|
|
void alignedFree(
|
|
AllocatorI* _allocator
|
|
, void* _ptr
|
|
, size_t /*_align*/
|
|
, const Location& _location = Location::current()
|
|
);
|
|
|
|
/// Resize memory block that was allocated with aligned allocator.
|
|
void* alignedRealloc(
|
|
AllocatorI* _allocator
|
|
, void* _ptr
|
|
, size_t _size
|
|
, size_t _align
|
|
, const Location& _location = Location::current()
|
|
);
|
|
|
|
/// Delete object with specific allocator.
|
|
template <typename ObjectT>
|
|
void deleteObject(
|
|
AllocatorI* _allocator
|
|
, ObjectT* _object
|
|
, size_t _align = 0
|
|
, const Location& _location = Location::current()
|
|
);
|
|
|
|
} // namespace bx
|
|
|
|
#include "inline/allocator.inl"
|
|
|
|
#endif // BX_ALLOCATOR_H_HEADER_GUARD
|