public static void *Calloc(ref UnmanagedMemoryPool pool)
{
void *ptr = Alloc(ref pool);
Memset(ptr, 0, pool.BlockSize);
return(ptr);
}
public static void *Alloc(ref UnmanagedMemoryPool pool)
{
void *pRet = pool.Free;
pool.Free = *((byte **)pool.Free);
return(pRet);
}
public static void Free(ref UnmanagedMemoryPool pool, void *ptr)
{
if (ptr != null)
{
void **pHead = (void **)ptr;
* pHead = pool.Free;
pool.Free = pHead;
}
}
public static UnmanagedMemoryPool AllocPool(int blockSize, int numBlocks)
{
Debug.Assert(blockSize >= MinimumPoolBlockSize);
Debug.Assert(numBlocks > 0);
blockSize = ((blockSize + 7) & (-8));
UnmanagedMemoryPool pool = new UnmanagedMemoryPool();
pool.Free = null;
pool.NumBlocks = numBlocks;
pool.BlockSize = blockSize;
pool.Alloc = (byte *)Alloc(blockSize * numBlocks);
FreeAll(&pool);
return(pool);
}