b = b[maxRW:]
		}
		if len(b) > 0 {
			o.bufs = append(o.bufs, syscall.WSABuf{Len: uint32(len(b)), Buf: &b[0]})
		}
	}
}

// ClearBufs clears all pointers to Buffers parameter captured
// by InitBufs, so it can be released by garbage collector.
func (o *operation) ClearBufs() {
	for i := range o.bufs {
		o.bufs[i].Buf = nil
	}
	o.bufs = o.bufs[:0]
}

func (o *operation) InitMsg(p []byte, oob []byte) {