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Diffstat (limited to 'thirdparty/bullet/src/Bullet3Common/b3AlignedAllocator.h')
-rw-r--r-- | thirdparty/bullet/src/Bullet3Common/b3AlignedAllocator.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/thirdparty/bullet/src/Bullet3Common/b3AlignedAllocator.h b/thirdparty/bullet/src/Bullet3Common/b3AlignedAllocator.h new file mode 100644 index 0000000000..be418bd55f --- /dev/null +++ b/thirdparty/bullet/src/Bullet3Common/b3AlignedAllocator.h @@ -0,0 +1,107 @@ +/* +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 + |