'\"
'\" Generated from file 'tcllib_fifo2\&.man' by tcllib/doctools with format 'nroff'
'\" Copyright (c) 2009 Andreas Kupries <andreas_kupries@users\&.sourceforge\&.net>
'\"
.TH "tcl::chan::fifo2" n 1\&.1 tcllib "Reflected/virtual channel support"
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.BS
.SH NAME
tcl::chan::fifo2 \- In-memory interconnected fifo channels
.SH SYNOPSIS
package require \fBTcl 8\&.5 9\fR
.sp
package require \fBTclOO\fR
.sp
package require \fBtcl::chan::events ?1\&.1?\fR
.sp
package require \fBtcl::chan::halfpipe ?1\&.1?\fR
.sp
package require \fBtcl::chan::fifo2 ?1\&.1?\fR
.sp
\fB::tcl::chan::fifo2\fR
.sp
.BE
.SH DESCRIPTION
.PP
The \fBtcl::chan::fifo2\fR package provides a command creating
pairs of channels which live purely in memory and are connected to
each other in a fifo manner\&. What is written to one half of the pair
can be read from the other half, in the same order\&. One particular
application for this is communication between threads, with one half
of the pair moved to the thread to talk to\&.
This is equivalent to the fifo2 channels provided by the package
\fBMemchan\fR, except that this is written in pure Tcl, not C\&. On
the other hand, \fBMemchan\fR is usable with Tcl 8\&.4 and before,
whereas this package requires Tcl 8\&.5 or higher, and \fBTclOO\fR\&.
.PP
The internal \fBTclOO\fR class implementing the channel
handler is a sub-class of the \fBtcl::chan::events\fR framework\&.
.SH API
.TP
\fB::tcl::chan::fifo2\fR
This command creates a new connected pair of fifo channels and returns
their handles, as a list containing two elements\&.
.PP
.SH "BUGS, IDEAS, FEEDBACK"
This document, and the package it describes, will undoubtedly contain
bugs and other problems\&.
Please report such in the category \fIvirtchannel\fR of the
\fITcllib Trackers\fR [http://core\&.tcl\&.tk/tcllib/reportlist]\&.
Please also report any ideas for enhancements you may have for either
package and/or documentation\&.
.PP
When proposing code changes, please provide \fIunified diffs\fR,
i\&.e the output of \fBdiff -u\fR\&.
.PP
Note further that \fIattachments\fR are strongly preferred over
inlined patches\&. Attachments can be made by going to the \fBEdit\fR
form of the ticket immediately after its creation, and then using the
left-most button in the secondary navigation bar\&.
.SH KEYWORDS
connected fifos, fifo, in-memory channel, inter-thread communication, reflected channel, tip 219, virtual channel
.SH CATEGORY
Channels
.SH COPYRIGHT
.nf
Copyright (c) 2009 Andreas Kupries <andreas_kupries@users\&.sourceforge\&.net>

.fi
