device-clear-input

Arguments: stream buffer-only

When buffer-only is nil, clears any pending input on the device connected to stream. May do nothing if buffer-only is true or if the underlying device has no buffering of its own. The buffer-only argument circumvents any hanging when a stream is re-established after a dumped (see dumplisp.htm) image has been restarted.

Defined methods

• On class: simple-stream: returns nil.
• On class: terminal-simple-stream: non-blocking read-octets is done repeatedly until 0 is returned.

See streams.htm for information on the simple-streams implementation in Allegro CL. The older but still supported Gray streams implementation is described in gray-streams.htm.

Copyright (c) 1998-2001, Franz Inc. Berkeley, CA., USA. All rights reserved.
Documentation for Allegro CL version 6.1 update # 1. This page was not revised.
Created 2001.12.15.