ReGameDLL_CS/regamedll/public/MemPool.cpp
2015-09-22 22:56:27 +06:00

101 lines
1.9 KiB
C++

#include "precompiled.h"
/* <3fea40> ../public/MemPool.cpp:35 */
CMemoryPool::CMemoryPool(int blockSize, int numElements)
{
_blocksPerBlob = numElements;
_blockSize = blockSize;
_numBlobs = 0;
_numElements = 0;
AddNewBlob();
_peakAlloc = 0;
_blocksAllocated = 0;
}
/* <3fe967> ../public/MemPool.cpp:52 */
CMemoryPool::~CMemoryPool(void)
{
for (int i = 0; i < _numBlobs; i++)
free(_memBlob[i]);
}
/* <3fe99c> ../public/MemPool.cpp:109 */
void CMemoryPool::AddNewBlob(void)
{
int sizeMultiplier = pow(2.0, _numBlobs);
int nElements = _blocksPerBlob * sizeMultiplier;
int blobSize = _blockSize * nElements;
_memBlob[_numBlobs] = malloc(blobSize);
#ifdef _WIN32
if (!_memBlob[_numBlobs])
DebugBreak();
#endif // _WIN32
_headOfFreeList = _memBlob[_numBlobs];
#ifdef _WIN32
if (!_headOfFreeList)
DebugBreak();
#endif // _WIN32
void **newBlob = (void **)_headOfFreeList;
for (int j = 0; j < nElements - 1; j++)
{
newBlob[0] = (char *)newBlob + _blockSize;
newBlob = (void **)newBlob[0];
}
newBlob[0] = NULL;
_numElements += nElements;
_numBlobs++;
#ifdef _WIN32
if (_numBlobs >= MAX_BLOBS - 1)
DebugBreak();
#endif // _WIN32
}
/* <3fea72> ../public/MemPool.cpp:157 */
void *CMemoryPool::Alloc(unsigned int amount)
{
void *returnBlock;
if (amount > (unsigned int)_blockSize)
return NULL;
_blocksAllocated++;
_peakAlloc = Q_max(_peakAlloc, _blocksAllocated);
if (_blocksAllocated >= _numElements)
AddNewBlob();
#ifdef _WIN32
if (!_headOfFreeList)
DebugBreak();
#endif // _WIN32
returnBlock = _headOfFreeList;
_headOfFreeList = *((void **)_headOfFreeList);
return returnBlock;
}
/* <3feabe> ../public/MemPool.cpp:193 */
void CMemoryPool::Free(void *memblock)
{
if (!memblock)
return;
#ifdef _DEBUG
Q_memset(memblock, 0xDD, _blockSize);
#endif // _DEBUG
_blocksAllocated--;
*((void **)memblock) = _headOfFreeList;
_headOfFreeList = memblock;
}