public int NbOfAvailableChunksForSize( int size )
{
int binIndex = GetBinIndexForSize( size );
int total = 0;
while( binIndex < _nbOfBins )
{
total += _freeChunksBins[ binIndex ].Count;
binIndex++;
}
total += ( _unallocatedCursor.MaxSize / size );
return total;
}