Blender V2.61 - r43446

btAlignedAllocator.h

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00001 /*
00002 Bullet Continuous Collision Detection and Physics Library
00003 Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
00004 
00005 This software is provided 'as-is', without any express or implied warranty.
00006 In no event will the authors be held liable for any damages arising from the use of this software.
00007 Permission is granted to anyone to use this software for any purpose,
00008 including commercial applications, and to alter it and redistribute it freely,
00009 subject to the following restrictions:
00010 
00011 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.
00012 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
00013 3. This notice may not be removed or altered from any source distribution.
00014 */
00015 
00016 #ifndef BT_ALIGNED_ALLOCATOR
00017 #define BT_ALIGNED_ALLOCATOR
00018 
00022 
00023 #include "btScalar.h"
00024 //#define BT_DEBUG_MEMORY_ALLOCATIONS 1
00025 #ifdef BT_DEBUG_MEMORY_ALLOCATIONS
00026 
00027 #define btAlignedAlloc(a,b) \
00028         btAlignedAllocInternal(a,b,__LINE__,__FILE__)
00029 
00030 #define btAlignedFree(ptr) \
00031         btAlignedFreeInternal(ptr,__LINE__,__FILE__)
00032 
00033 void*   btAlignedAllocInternal  (size_t size, int alignment,int line,char* filename);
00034 
00035 void    btAlignedFreeInternal   (void* ptr,int line,char* filename);
00036 
00037 #else
00038     void*   btAlignedAllocInternal  (size_t size, int alignment);
00039     void    btAlignedFreeInternal   (void* ptr);
00040 
00041     #define btAlignedAlloc(size,alignment) btAlignedAllocInternal(size,alignment)
00042     #define btAlignedFree(ptr) btAlignedFreeInternal(ptr)
00043 
00044 #endif
00045 typedef int size_type;
00046 
00047 typedef void *(btAlignedAllocFunc)(size_t size, int alignment);
00048 typedef void (btAlignedFreeFunc)(void *memblock);
00049 typedef void *(btAllocFunc)(size_t size);
00050 typedef void (btFreeFunc)(void *memblock);
00051 
00053 void btAlignedAllocSetCustom(btAllocFunc *allocFunc, btFreeFunc *freeFunc);
00055 void btAlignedAllocSetCustomAligned(btAlignedAllocFunc *allocFunc, btAlignedFreeFunc *freeFunc);
00056 
00057 
00060 template < typename T , unsigned Alignment >
00061 class btAlignedAllocator {
00062     
00063     typedef btAlignedAllocator< T , Alignment > self_type;
00064     
00065 public:
00066 
00067     //just going down a list:
00068     btAlignedAllocator() {}
00069     /*
00070     btAlignedAllocator( const self_type & ) {}
00071     */
00072 
00073     template < typename Other >
00074     btAlignedAllocator( const btAlignedAllocator< Other , Alignment > & ) {}
00075 
00076     typedef const T*         const_pointer;
00077     typedef const T&         const_reference;
00078     typedef T*               pointer;
00079     typedef T&               reference;
00080     typedef T                value_type;
00081 
00082     pointer       address   ( reference        ref ) const                           { return &ref; }
00083     const_pointer address   ( const_reference  ref ) const                           { return &ref; }
00084     pointer       allocate  ( size_type        n   , const_pointer *      hint = 0 ) {
00085         (void)hint;
00086         return reinterpret_cast< pointer >(btAlignedAlloc( sizeof(value_type) * n , Alignment ));
00087     }
00088     void          construct ( pointer          ptr , const value_type &   value    ) { new (ptr) value_type( value ); }
00089     void          deallocate( pointer          ptr ) {
00090         btAlignedFree( reinterpret_cast< void * >( ptr ) );
00091     }
00092     void          destroy   ( pointer          ptr )                                 { ptr->~value_type(); }
00093     
00094 
00095     template < typename O > struct rebind {
00096         typedef btAlignedAllocator< O , Alignment > other;
00097     };
00098     template < typename O >
00099     self_type & operator=( const btAlignedAllocator< O , Alignment > & ) { return *this; }
00100 
00101     friend bool operator==( const self_type & , const self_type & ) { return true; }
00102 };
00103 
00104 
00105 
00106 #endif //BT_ALIGNED_ALLOCATOR
00107