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Diffstat (limited to 'extern/bullet2/LinearMath/btAlignedAllocator.cpp')
| -rw-r--r-- | extern/bullet2/LinearMath/btAlignedAllocator.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/extern/bullet2/LinearMath/btAlignedAllocator.cpp b/extern/bullet2/LinearMath/btAlignedAllocator.cpp new file mode 100644 index 00000000000..a3d790f8abc --- /dev/null +++ b/extern/bullet2/LinearMath/btAlignedAllocator.cpp @@ -0,0 +1,205 @@ +/* +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. +*/ + +#include "btAlignedAllocator.h" + +int gNumAlignedAllocs = 0; +int gNumAlignedFree = 0; +int gTotalBytesAlignedAllocs = 0;//detect memory leaks + +static void *btAllocDefault(size_t size) +{ + return malloc(size); +} + +static void btFreeDefault(void *ptr) +{ + free(ptr); +} + +static btAllocFunc *sAllocFunc = btAllocDefault; +static btFreeFunc *sFreeFunc = btFreeDefault; + + + +#if defined (BT_HAS_ALIGNED_ALLOCATOR) +#include <malloc.h> +static void *btAlignedAllocDefault(size_t size, int alignment) +{ + return _aligned_malloc(size, (size_t)alignment); +} + +static void btAlignedFreeDefault(void *ptr) +{ + _aligned_free(ptr); +} +#elif defined(__CELLOS_LV2__) +#include <stdlib.h> + +static inline void *btAlignedAllocDefault(size_t size, int alignment) +{ + return memalign(alignment, size); +} + +static inline void btAlignedFreeDefault(void *ptr) +{ + free(ptr); +} +#else +static inline void *btAlignedAllocDefault(size_t size, int alignment) +{ + void *ret; + char *real; + unsigned long offset; + + real = (char *)sAllocFunc(size + sizeof(void *) + (alignment-1)); + if (real) { + offset = (alignment - (unsigned long)(real + sizeof(void *))) & (alignment-1); + ret = (void *)((real + sizeof(void *)) + offset); + *((void **)(ret)-1) = (void *)(real); + } else { + ret = (void *)(real); + } + return (ret); +} + +static inline void btAlignedFreeDefault(void *ptr) +{ + void* real; + + if (ptr) { + real = *((void **)(ptr)-1); + sFreeFunc(real); + } +} +#endif + + +static btAlignedAllocFunc *sAlignedAllocFunc = btAlignedAllocDefault; +static btAlignedFreeFunc *sAlignedFreeFunc = btAlignedFreeDefault; + +void btAlignedAllocSetCustomAligned(btAlignedAllocFunc *allocFunc, btAlignedFreeFunc *freeFunc) +{ + sAlignedAllocFunc = allocFunc ? allocFunc : btAlignedAllocDefault; + sAlignedFreeFunc = freeFunc ? freeFunc : btAlignedFreeDefault; +} + +void btAlignedAllocSetCustom(btAllocFunc *allocFunc, btFreeFunc *freeFunc) +{ + sAllocFunc = allocFunc ? allocFunc : btAllocDefault; + sFreeFunc = freeFunc ? freeFunc : btFreeDefault; +} + +#ifdef BT_DEBUG_MEMORY_ALLOCATIONS +//this generic allocator provides the total allocated number of bytes +#include <stdio.h> + +void* btAlignedAllocInternal (size_t size, int alignment,int line,char* filename) +{ + void *ret; + char *real; + unsigned long offset; + + gTotalBytesAlignedAllocs += size; + gNumAlignedAllocs++; + + + real = (char *)sAllocFunc(size + 2*sizeof(void *) + (alignment-1)); + if (real) { + offset = (alignment - (unsigned long)(real + 2*sizeof(void *))) & +(alignment-1); + ret = (void *)((real + 2*sizeof(void *)) + offset); + *((void **)(ret)-1) = (void *)(real); + *((int*)(ret)-2) = size; + + } else { + ret = (void *)(real);//?? + } + + printf("allocation#%d at address %x, from %s,line %d, size %d\n",gNumAlignedAllocs,real, filename,line,size); + + int* ptr = (int*)ret; + *ptr = 12; + return (ret); +} + +void btAlignedFreeInternal (void* ptr,int line,char* filename) +{ + + void* real; + gNumAlignedFree++; + + if (ptr) { + real = *((void **)(ptr)-1); + int size = *((int*)(ptr)-2); + gTotalBytesAlignedAllocs -= size; + + printf("free #%d at address %x, from %s,line %d, size %d\n",gNumAlignedFree,real, filename,line,size); + + sFreeFunc(real); + } else + { + printf("NULL ptr\n"); + } +} + +#else //BT_DEBUG_MEMORY_ALLOCATIONS + +void* btAlignedAllocInternal (size_t size, int alignment) +{ + gNumAlignedAllocs++; + void* ptr; +#if defined (BT_HAS_ALIGNED_ALLOCATOR) || defined(__CELLOS_LV2__) + ptr = sAlignedAllocFunc(size, alignment); +#else + char *real; + unsigned long offset; + + real = (char *)sAllocFunc(size + sizeof(void *) + (alignment-1)); + if (real) { + offset = (alignment - (unsigned long)(real + sizeof(void *))) & (alignment-1); + ptr = (void *)((real + sizeof(void *)) + offset); + *((void **)(ptr)-1) = (void *)(real); + } else { + ptr = (void *)(real); + } +#endif // defined (BT_HAS_ALIGNED_ALLOCATOR) || defined(__CELLOS_LV2__) +// printf("btAlignedAllocInternal %d, %x\n",size,ptr); + return ptr; +} + +void btAlignedFreeInternal (void* ptr) +{ + if (!ptr) + { + return; + } + + gNumAlignedFree++; +// printf("btAlignedFreeInternal %x\n",ptr); +#if defined (BT_HAS_ALIGNED_ALLOCATOR) || defined(__CELLOS_LV2__) + sAlignedFreeFunc(ptr); +#else + void* real; + + if (ptr) { + real = *((void **)(ptr)-1); + sFreeFunc(real); + } +#endif // defined (BT_HAS_ALIGNED_ALLOCATOR) || defined(__CELLOS_LV2__) +} + +#endif //BT_DEBUG_MEMORY_ALLOCATIONS + |