108 lines
4.4 KiB
C++
108 lines
4.4 KiB
C++
/*
|
|
Bullet Continuous Collision Detection and Physics Library
|
|
Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/
|
|
|
|
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 BT_ALIGNED_ALLOCATOR
|
|
#define BT_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 "btScalar.h"
|
|
//#define BT_DEBUG_MEMORY_ALLOCATIONS 1
|
|
#ifdef BT_DEBUG_MEMORY_ALLOCATIONS
|
|
|
|
#define btAlignedAlloc(a,b) \
|
|
btAlignedAllocInternal(a,b,__LINE__,__FILE__)
|
|
|
|
#define btAlignedFree(ptr) \
|
|
btAlignedFreeInternal(ptr,__LINE__,__FILE__)
|
|
|
|
void* btAlignedAllocInternal (size_t size, int alignment,int line,char* filename);
|
|
|
|
void btAlignedFreeInternal (void* ptr,int line,char* filename);
|
|
|
|
#else
|
|
void* btAlignedAllocInternal (size_t size, int alignment);
|
|
void btAlignedFreeInternal (void* ptr);
|
|
|
|
#define btAlignedAlloc(size,alignment) btAlignedAllocInternal(size,alignment)
|
|
#define btAlignedFree(ptr) btAlignedFreeInternal(ptr)
|
|
|
|
#endif
|
|
typedef int size_type;
|
|
|
|
typedef void *(btAlignedAllocFunc)(size_t size, int alignment);
|
|
typedef void (btAlignedFreeFunc)(void *memblock);
|
|
typedef void *(btAllocFunc)(size_t size);
|
|
typedef void (btFreeFunc)(void *memblock);
|
|
|
|
///The developer can let all Bullet memory allocations go through a custom memory allocator, using btAlignedAllocSetCustom
|
|
void btAlignedAllocSetCustom(btAllocFunc *allocFunc, btFreeFunc *freeFunc);
|
|
///If the developer has already an custom aligned allocator, then btAlignedAllocSetCustomAligned can be used. The default aligned allocator pre-allocates extra memory using the non-aligned allocator, and instruments it.
|
|
void btAlignedAllocSetCustomAligned(btAlignedAllocFunc *allocFunc, btAlignedFreeFunc *freeFunc);
|
|
|
|
|
|
///The btAlignedAllocator is a portable class for aligned memory allocations.
|
|
///Default implementations for unaligned and aligned allocations can be overridden by a custom allocator using btAlignedAllocSetCustom and btAlignedAllocSetCustomAligned.
|
|
template < typename T , unsigned Alignment >
|
|
class btAlignedAllocator {
|
|
|
|
typedef btAlignedAllocator< T , Alignment > self_type;
|
|
|
|
public:
|
|
|
|
//just going down a list:
|
|
btAlignedAllocator() {}
|
|
/*
|
|
btAlignedAllocator( const self_type & ) {}
|
|
*/
|
|
|
|
template < typename Other >
|
|
btAlignedAllocator( const btAlignedAllocator< 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 ( size_type n , const_pointer * hint = 0 ) {
|
|
(void)hint;
|
|
return reinterpret_cast< pointer >(btAlignedAlloc( sizeof(value_type) * n , Alignment ));
|
|
}
|
|
void construct ( pointer ptr , const value_type & value ) { new (ptr) value_type( value ); }
|
|
void deallocate( pointer ptr ) {
|
|
btAlignedFree( reinterpret_cast< void * >( ptr ) );
|
|
}
|
|
void destroy ( pointer ptr ) { ptr->~value_type(); }
|
|
|
|
|
|
template < typename O > struct rebind {
|
|
typedef btAlignedAllocator< O , Alignment > other;
|
|
};
|
|
template < typename O >
|
|
self_type & operator=( const btAlignedAllocator< O , Alignment > & ) { return *this; }
|
|
|
|
friend bool operator==( const self_type & , const self_type & ) { return true; }
|
|
};
|
|
|
|
|
|
|
|
#endif //BT_ALIGNED_ALLOCATOR
|
|
|