zero3tcl
Create and manipulate zero channels
Usage
package require Tcl
package require memchan
zero
Overview
The command described here is only available in a not-yet released version 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). Transferring the generated channel between interpreters is possible but does not make much sense.
Options
Memory channels created by zero provide one additional option to set or query.
-
-delay ?milliseconds? -
A
zerochannel is always writable and readable. This means that allfileevent-handlers will fire continuously. To avoid starvation of other event sources the events raised by this channel type have a configurable delay. This option is set in milliseconds and defaults to 5.
Keywords
channel, i/o, in-memory channel, null, zero
Releases
9 releases since Debian 5.0 (Lenny); the text changed 3 times.