mirror of
https://github.com/Relintai/pandemonium_engine.git
synced 2024-12-28 14:47:13 +01:00
111 lines
4.0 KiB
C++
111 lines
4.0 KiB
C++
/*
|
|
Bullet Continuous Collision Detection and Physics Library
|
|
Copyright (c) 2003-2013 Erwin Coumans http://bulletphysics.org
|
|
|
|
This software is provided 'as-is', without any express or implied warranty.
|
|
In no event will the authors be held liable for any damages arising from the use of this software.
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it freely,
|
|
subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
|
|
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
|
|
3. This notice may not be removed or altered from any source distribution.
|
|
*/
|
|
|
|
#ifndef B3_ALIGNED_ALLOCATOR
|
|
#define B3_ALIGNED_ALLOCATOR
|
|
|
|
///we probably replace this with our own aligned memory allocator
|
|
///so we replace _aligned_malloc and _aligned_free with our own
|
|
///that is better portable and more predictable
|
|
|
|
#include "b3Scalar.h"
|
|
//#define B3_DEBUG_MEMORY_ALLOCATIONS 1
|
|
#ifdef B3_DEBUG_MEMORY_ALLOCATIONS
|
|
|
|
#define b3AlignedAlloc(a, b) \
|
|
b3AlignedAllocInternal(a, b, __LINE__, __FILE__)
|
|
|
|
#define b3AlignedFree(ptr) \
|
|
b3AlignedFreeInternal(ptr, __LINE__, __FILE__)
|
|
|
|
void* b3AlignedAllocInternal(size_t size, int alignment, int line, char* filename);
|
|
|
|
void b3AlignedFreeInternal(void* ptr, int line, char* filename);
|
|
|
|
#else
|
|
void* b3AlignedAllocInternal(size_t size, int alignment);
|
|
void b3AlignedFreeInternal(void* ptr);
|
|
|
|
#define b3AlignedAlloc(size, alignment) b3AlignedAllocInternal(size, alignment)
|
|
#define b3AlignedFree(ptr) b3AlignedFreeInternal(ptr)
|
|
|
|
#endif
|
|
typedef int btSizeType;
|
|
|
|
typedef void*(b3AlignedAllocFunc)(size_t size, int alignment);
|
|
typedef void(b3AlignedFreeFunc)(void* memblock);
|
|
typedef void*(b3AllocFunc)(size_t size);
|
|
typedef void(b3FreeFunc)(void* memblock);
|
|
|
|
///The developer can let all Bullet memory allocations go through a custom memory allocator, using b3AlignedAllocSetCustom
|
|
void b3AlignedAllocSetCustom(b3AllocFunc* allocFunc, b3FreeFunc* freeFunc);
|
|
///If the developer has already an custom aligned allocator, then b3AlignedAllocSetCustomAligned can be used. The default aligned allocator pre-allocates extra memory using the non-aligned allocator, and instruments it.
|
|
void b3AlignedAllocSetCustomAligned(b3AlignedAllocFunc* allocFunc, b3AlignedFreeFunc* freeFunc);
|
|
|
|
///The b3AlignedAllocator is a portable class for aligned memory allocations.
|
|
///Default implementations for unaligned and aligned allocations can be overridden by a custom allocator using b3AlignedAllocSetCustom and b3AlignedAllocSetCustomAligned.
|
|
template <typename T, unsigned Alignment>
|
|
class b3AlignedAllocator
|
|
{
|
|
typedef b3AlignedAllocator<T, Alignment> self_type;
|
|
|
|
public:
|
|
//just going down a list:
|
|
b3AlignedAllocator() {}
|
|
/*
|
|
b3AlignedAllocator( const self_type & ) {}
|
|
*/
|
|
|
|
template <typename Other>
|
|
b3AlignedAllocator(const b3AlignedAllocator<Other, Alignment>&)
|
|
{
|
|
}
|
|
|
|
typedef const T* const_pointer;
|
|
typedef const T& const_reference;
|
|
typedef T* pointer;
|
|
typedef T& reference;
|
|
typedef T value_type;
|
|
|
|
pointer address(reference ref) const { return &ref; }
|
|
const_pointer address(const_reference ref) const { return &ref; }
|
|
pointer allocate(btSizeType n, const_pointer* hint = 0)
|
|
{
|
|
(void)hint;
|
|
return reinterpret_cast<pointer>(b3AlignedAlloc(sizeof(value_type) * n, Alignment));
|
|
}
|
|
void construct(pointer ptr, const value_type& value) { new (ptr) value_type(value); }
|
|
void deallocate(pointer ptr)
|
|
{
|
|
b3AlignedFree(reinterpret_cast<void*>(ptr));
|
|
}
|
|
void destroy(pointer ptr) { ptr->~value_type(); }
|
|
|
|
template <typename O>
|
|
struct rebind
|
|
{
|
|
typedef b3AlignedAllocator<O, Alignment> other;
|
|
};
|
|
template <typename O>
|
|
self_type& operator=(const b3AlignedAllocator<O, Alignment>&)
|
|
{
|
|
return *this;
|
|
}
|
|
|
|
friend bool operator==(const self_type&, const self_type&) { return true; }
|
|
};
|
|
|
|
#endif //B3_ALIGNED_ALLOCATOR
|