void InitBufWithSubpage(PooledArrayBuffer <T> buf, long handle, int bitmapIdx, int reqCapacity)
{
Contract.Assert(bitmapIdx != 0);
int memoryMapIdx = MemoryMapIdx(handle);
PoolSubpage <T> subpage = this.subpages[this.SubpageIdx(memoryMapIdx)];
Contract.Assert(subpage.DoNotDestroy);
Contract.Assert(reqCapacity <= subpage.ElemSize);
buf.Init(
this, handle,
this.RunOffset(memoryMapIdx) + (bitmapIdx & 0x3FFFFFFF) * subpage.ElemSize, reqCapacity, subpage.ElemSize,
this.Arena.Parent.ThreadCache());
}
internal void InitBuf(PooledArrayBuffer <T> buf, long handle, int reqCapacity)
{
int memoryMapIdx = MemoryMapIdx(handle);
int bitmapIdx = BitmapIdx(handle);
if (bitmapIdx == 0)
{
sbyte val = this.Value(memoryMapIdx);
Contract.Assert(val == this.unusable, val.ToString());
buf.Init(this, handle, this.RunOffset(memoryMapIdx), reqCapacity, this.RunLength(memoryMapIdx),
this.Arena.Parent.ThreadCache());
}
else
{
this.InitBufWithSubpage(buf, handle, bitmapIdx, reqCapacity);
}
}