zero(n) zero(n) ______________________________________________________________________________
NAME
zero - Create and manipulate zero channels
SYNOPSIS
package require Tcl
package require memchan
zero
_________________________________________________________________
DESCRIPTION
The command described here is only available in a not-yet released ver-
sion of the package. Use the CVS to get the sources.
zero creates a zero channel which absorbs everything written into it.
Reading from a zero channel will return the requested number of
null bytes. These channels are essentially Tcl-specific variants
of the zero device for unixoid operating systems (/dev/zero).
Transfering the generated channel between interpreters is possi-
ble but does not make much sense.
OPTIONS
Memory channels created by zero provide one additional option to set or
query.
-delay ?milliseconds?
A zero channel is always writable and readable. This means that
all fileevent-handlers will fire continuously. To avoid starva-
tion of other event sources the events raised by this channel
type have a configurable delay. This option is set in millisec-
onds and defaults to 5.
SEE ALSO
fifo(n), fifo2(n), memchan(n), null(n), random(n)
KEYWORDS
channel, i/o, in-memory channel, null, zero
COPYRIGHT
Copyright (c) 2004 Pat Thoyts <patthoyts@users.sourceforge.net>
Memory channels 2.2 zero(n)
Mac OS X 10.8 - Generated Sat Sep 15 17:02:01 CDT 2012