NAME

       tcl::chan::fifo2 - In-memory interconnected fifo channels

SYNOPSIS

       package require Tcl 8.5 9

       package require TclOO

       package require tcl::chan::events ?1.1?

       package require tcl::chan::halfpipe ?1.1?

       package require tcl::chan::fifo2 ?1.1?

       ::tcl::chan::fifo2

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DESCRIPTION

       The  tcl::chan::fifo2  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 Memchan, except that this is written in pure Tcl, not C. On the other
       hand, Memchan is usable with Tcl 8.4 and before, whereas this package requires Tcl  8.5  or  higher,  and
       TclOO.

       The  internal  TclOO  class  implementing  the  channel  handler  is a sub-class of the tcl::chan::events
       framework.

API

       ::tcl::chan::fifo2
              This command creates a new connected pair of fifo channels and returns their handles,  as  a  list
              containing two elements.

BUGS, IDEAS, FEEDBACK

       This  document,  and  the package it describes, will undoubtedly contain bugs and other problems.  Please
       report such in the category virtchannel of the  Tcllib  Trackers  [http://core.tcl.tk/tcllib/reportlist].
       Please also report any ideas for enhancements you may have for either package and/or documentation.

       When proposing code changes, please provide unified diffs, i.e the output of diff -u.

       Note  further  that  attachments  are strongly preferred over inlined patches. Attachments can be made by
       going to the Edit form of the ticket immediately after its creation, and then using the left-most  button
       in the secondary navigation bar.

KEYWORDS

       connected fifos, fifo, in-memory channel, inter-thread communication, reflected channel, tip 219, virtual
       channel

CATEGORY

       Channels

COPYRIGHT

       Copyright (c) 2009 Andreas Kupries <andreas_kupries@users.sourceforge.net>

tcllib                                                 1.1                                tcl::chan::fifo2(3tcl)