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Diffstat (limited to 'thirdparty/bullet/src/LinearMath/btStackAlloc.h')
-rw-r--r-- | thirdparty/bullet/src/LinearMath/btStackAlloc.h | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/thirdparty/bullet/src/LinearMath/btStackAlloc.h b/thirdparty/bullet/src/LinearMath/btStackAlloc.h deleted file mode 100644 index 397b084877..0000000000 --- a/thirdparty/bullet/src/LinearMath/btStackAlloc.h +++ /dev/null @@ -1,116 +0,0 @@ -/* -Copyright (c) 2003-2006 Gino van den Bergen / 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. -*/ - -/* -StackAlloc extracted from GJK-EPA collision solver by Nathanael Presson -Nov.2006 -*/ - -#ifndef BT_STACK_ALLOC -#define BT_STACK_ALLOC - -#include "btScalar.h" //for btAssert -#include "btAlignedAllocator.h" - -///The btBlock class is an internal structure for the btStackAlloc memory allocator. -struct btBlock -{ - btBlock* previous; - unsigned char* address; -}; - -///The StackAlloc class provides some fast stack-based memory allocator (LIFO last-in first-out) -class btStackAlloc -{ -public: - - btStackAlloc(unsigned int size) { ctor();create(size); } - ~btStackAlloc() { destroy(); } - - inline void create(unsigned int size) - { - destroy(); - data = (unsigned char*) btAlignedAlloc(size,16); - totalsize = size; - } - inline void destroy() - { - btAssert(usedsize==0); - //Raise(L"StackAlloc is still in use"); - - if(usedsize==0) - { - if(!ischild && data) - btAlignedFree(data); - - data = 0; - usedsize = 0; - } - - } - - int getAvailableMemory() const - { - return static_cast<int>(totalsize - usedsize); - } - - unsigned char* allocate(unsigned int size) - { - const unsigned int nus(usedsize+size); - if(nus<totalsize) - { - usedsize=nus; - return(data+(usedsize-size)); - } - btAssert(0); - //&& (L"Not enough memory")); - - return(0); - } - SIMD_FORCE_INLINE btBlock* beginBlock() - { - btBlock* pb = (btBlock*)allocate(sizeof(btBlock)); - pb->previous = current; - pb->address = data+usedsize; - current = pb; - return(pb); - } - SIMD_FORCE_INLINE void endBlock(btBlock* block) - { - btAssert(block==current); - //Raise(L"Unmatched blocks"); - if(block==current) - { - current = block->previous; - usedsize = (unsigned int)((block->address-data)-sizeof(btBlock)); - } - } - -private: - void ctor() - { - data = 0; - totalsize = 0; - usedsize = 0; - current = 0; - ischild = false; - } - unsigned char* data; - unsigned int totalsize; - unsigned int usedsize; - btBlock* current; - bool ischild; -}; - -#endif //BT_STACK_ALLOC |