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Diffstat (limited to 'thirdparty/bullet/src/LinearMath/btPoolAllocator.h')
-rw-r--r-- | thirdparty/bullet/src/LinearMath/btPoolAllocator.h | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/thirdparty/bullet/src/LinearMath/btPoolAllocator.h b/thirdparty/bullet/src/LinearMath/btPoolAllocator.h deleted file mode 100644 index efdeda8ffc..0000000000 --- a/thirdparty/bullet/src/LinearMath/btPoolAllocator.h +++ /dev/null @@ -1,130 +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. -*/ - - -#ifndef _BT_POOL_ALLOCATOR_H -#define _BT_POOL_ALLOCATOR_H - -#include "btScalar.h" -#include "btAlignedAllocator.h" -#include "btThreads.h" - -///The btPoolAllocator class allows to efficiently allocate a large pool of objects, instead of dynamically allocating them separately. -class btPoolAllocator -{ - int m_elemSize; - int m_maxElements; - int m_freeCount; - void* m_firstFree; - unsigned char* m_pool; - btSpinMutex m_mutex; // only used if BT_THREADSAFE - -public: - - btPoolAllocator(int elemSize, int maxElements) - :m_elemSize(elemSize), - m_maxElements(maxElements) - { - m_pool = (unsigned char*) btAlignedAlloc( static_cast<unsigned int>(m_elemSize*m_maxElements),16); - - unsigned char* p = m_pool; - m_firstFree = p; - m_freeCount = m_maxElements; - int count = m_maxElements; - while (--count) { - *(void**)p = (p + m_elemSize); - p += m_elemSize; - } - *(void**)p = 0; - } - - ~btPoolAllocator() - { - btAlignedFree( m_pool); - } - - int getFreeCount() const - { - return m_freeCount; - } - - int getUsedCount() const - { - return m_maxElements - m_freeCount; - } - - int getMaxCount() const - { - return m_maxElements; - } - - void* allocate(int size) - { - // release mode fix - (void)size; - btMutexLock(&m_mutex); - btAssert(!size || size<=m_elemSize); - //btAssert(m_freeCount>0); // should return null if all full - void* result = m_firstFree; - if (NULL != m_firstFree) - { - m_firstFree = *(void**)m_firstFree; - --m_freeCount; - } - btMutexUnlock(&m_mutex); - return result; - } - - bool validPtr(void* ptr) - { - if (ptr) { - if (((unsigned char*)ptr >= m_pool && (unsigned char*)ptr < m_pool + m_maxElements * m_elemSize)) - { - return true; - } - } - return false; - } - - void freeMemory(void* ptr) - { - if (ptr) { - btAssert((unsigned char*)ptr >= m_pool && (unsigned char*)ptr < m_pool + m_maxElements * m_elemSize); - - btMutexLock(&m_mutex); - *(void**)ptr = m_firstFree; - m_firstFree = ptr; - ++m_freeCount; - btMutexUnlock(&m_mutex); - } - } - - int getElementSize() const - { - return m_elemSize; - } - - unsigned char* getPoolAddress() - { - return m_pool; - } - - const unsigned char* getPoolAddress() const - { - return m_pool; - } - -}; - -#endif //_BT_POOL_ALLOCATOR_H |