| /* |
| 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 "LinearMath/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 |
| |