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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). Transferring the generated channel between interpreters is pos- sible 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, fifo2, memchan, null, random 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)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | KEYWORDS | COPYRIGHT
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