public byte *Malloc(int size, bool counterBased)
{
int idx = _blockPool.Pop();
var ptr = &_data[idx * _physicalBlockSize];
var header = (BlockHeader *)ptr;
header->BlockIndex = idx;
header->PtrSize = size;
header->BlocksSize = _blocksSize;
header->SegmentIndex = _segmentIndex;
header->ReferenceCount = counterBased ? 1 : 0;
Interlocked.Decrement(ref _freeBlocks);
return(ptr + BlockHeader.SIZE);
}
// ****************************************************************************************** //
// ********** STATISTICS
public static byte *New(int size, bool counterBased = false, bool overSized = false)
{
byte *ptr = null;
int q = SizeToQueue(size + (overSized ? size * 2 : 0));
int mem = -1;
// -------- Reduced contention with minimal instructions count
lock (_locker) {
int idx = _pool.FirstOfQueue(q);
if (idx == -1)
{
idx = _pool.Pop();
_pool.Enqueue(idx, q);
int segsSize = 0;
int blocksSize = 0;
SizeToSegmentProperties(size + (overSized ? size * 2 : 0), out segsSize, out blocksSize);
_segments[idx].Build(segsSize, blocksSize, idx, out mem);
ptr = _segments[idx].Malloc(size, counterBased);
}
else
{
ptr = _segments[idx].Malloc(size, counterBased);
if (_segments[idx].FreeBlocks == 0)
{
_pool.Enqueue(idx, q + 1);
}
}
}
// -------- Update statistics
Interlocked.Add(ref _totalMemory, size);
Interlocked.Increment(ref _totalBlockCount);
if (mem != -1)
{
Interlocked.Add(ref _totalBufferSpace, mem);
Interlocked.Increment(ref _totalSegmentCount);
}
return(ptr);
}
