threads-2.21 - Perl interpreter-based threads

<!DOCTYPE html> <html lang="en-US"> <head> <title>threads-2.21 - Perl interpreter-based threads - metacpan.org</title> <link rel="preload" as="fetch" href="/account/login_status" crossorigin="anonymous" /> <link href="/assets/style-XFEQ536G.css" rel="stylesheet" type="text/css"> <script src="/assets/main-WXBSEDQJ.js" type="module"></script> <link rel="alternate" type="application/rss+xml" title="Recent CPAN Uploads of threads - MetaCPAN" href="/dist/threads/releases.rss" /> <link rel="canonical" href="https://metacpan.org/dist/threads" /> <meta name="description" content="Perl interpreter-based threads" /> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=5"> <link rel="shortcut icon" href="/static/icons/favicon.ico"> <link rel="apple-touch-icon" sizes="152x152" href="/static/icons/apple-touch-icon.png"> <link rel="search" href="/static/opensearch.xml" type="application/opensearchdescription+xml" title="MetaCPAN"> <script async 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href="/dist/threads/source">Browse</a> (<a href="/dist/threads/source?raw=1">raw</a>)</li> <li> <a data-keyboard-shortcut="g c" href="/dist/threads/changes">Changes</a> </li> <li> <a class="nopopup" href="/dist/threads/contribute">How to Contribute</a> </li> <li> <a rel="noopener nofollow" data-keyboard-shortcut="g i" href="https://rt.cpan.org/Public/Dist/Display.html?Name=threads">Issues</a> (0) </li> <li> <a rel="noopener nofollow" href="http://matrix.cpantesters.org/?dist=threads+2.21" title="Matrix">Testers</a> <span title="(pass / fail / na)">(<a rel="noopener nofollow" href="https://www.cpantesters.org/distro/t/threads.html?oncpan=1&distmat=1&version=2.21&grade=2" style="color: #090">1277</a> / <a rel="noopener nofollow" href="https://www.cpantesters.org/distro/t/threads.html?oncpan=1&distmat=1&version=2.21&grade=3" style="color: #900">31</a> / <a rel="noopener nofollow" href="https://www.cpantesters.org/distro/t/threads.html?oncpan=1&distmat=1&version=2.21&grade=4">0</a>)</span> </li> <li> <a rel="noopener nofollow" href="http://cpants.cpanauthors.org/release/JDHEDDEN/threads-2.21">Kwalitee</a> </li> <li> <div class="ttip" data-toggle="tooltip" data-placement="bottom" title="The # people with an indexing permission on threads who have released something to CPAN in the last 2 years (i.e. the # people likely able to release critical fixes in a timely manner)"> Bus factor: 5 </div> </li> <li> <a rel="noopener nofollow" href="http://cpancover.com/latest/threads-2.21/index.html">25.00% Coverage </a> </li> <li> License: perl_5 </li> <li class="nav-header">Activity</li> <li> <div class="activity-graph"> <img src="/dist/threads/activity.svg?res=month" /> <div class="comment">24 month</div> </div> </li> <li class="nav-header">Tools</li> <li> <a itemprop="downloadUrl" href="https://cpan.metacpan.org/authors/id/J/JD/JDHEDDEN/threads-2.21.tar.gz"> Download (<span itemprop="fileSize">110.79KB</span>)</a> </li> <li> <a 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class="select-navigator form-control tool-bar-form"> <option disabled selected>Jump to version</option> <option value="/release/RURBAN/threads-2.22_01" >2.22_01 DEV (RURBAN on 2018-09-07)</option> <option disabled value="/release/JDHEDDEN/threads-2.21" >2.21 (JDHEDDEN on 2018-01-23)</option> <option value="/release/JDHEDDEN/threads-2.16" >2.16 (JDHEDDEN on 2017-06-02)</option> <option value="/release/JDHEDDEN/threads-2.15" >2.15 (JDHEDDEN on 2017-02-26)</option> <option value="/release/JDHEDDEN/threads-2.14" >2.14 (JDHEDDEN on 2017-02-26)</option> <option value="/release/JDHEDDEN/threads-2.13" >2.13 (JDHEDDEN on 2017-02-26)</option> <option value="/release/JDHEDDEN/threads-2.12" >2.12 (JDHEDDEN on 2016-12-31)</option> <option value="/release/JDHEDDEN/threads-2.11" >2.11 (JDHEDDEN on 2016-12-31)</option> <option value="/release/JDHEDDEN/threads-2.09" >2.09 (JDHEDDEN on 2016-05-21)</option> <option value="/release/JDHEDDEN/threads-2.08" >2.08 (JDHEDDEN on 2016-05-16)</option> <option value="/release/JDHEDDEN/threads-2.07" >2.07 (JDHEDDEN on 2016-04-30)</option> <option value="/release/JDHEDDEN/threads-2.02" >2.02 (JDHEDDEN on 2015-06-13)</option> <optgroup label="BackPAN">' <option value="/release/JDHEDDEN/threads-2.01" >2.01 (JDHEDDEN on 2015-03-08)</option> <option value="/release/JDHEDDEN/threads-1.99" >1.99 (JDHEDDEN on 2015-03-06)</option> <option value="/release/JDHEDDEN/threads-1.98" >1.98 (JDHEDDEN on 2015-03-05)</option> <option value="/release/JDHEDDEN/threads-1.97" >1.97 (JDHEDDEN on 2015-03-04)</option> <option value="/release/JDHEDDEN/threads-1.96" >1.96 (JDHEDDEN on 2014-08-28)</option> <option value="/release/JDHEDDEN/threads-1.92" >1.92 (JDHEDDEN on 2014-02-04)</option> <option value="/release/JDHEDDEN/threads-1.91" >1.91 (JDHEDDEN on 2014-02-04)</option> <option value="/release/JDHEDDEN/threads-1.89" >1.89 (JDHEDDEN on 2013-09-30)</option> <option value="/release/JDHEDDEN/threads-1.87" >1.87 (JDHEDDEN on 2013-05-29)</option> <option value="/release/JDHEDDEN/threads-1.86" >1.86 (JDHEDDEN on 2011-12-14)</option> <option value="/release/JDHEDDEN/threads-1.85" >1.85 (JDHEDDEN on 2011-09-03)</option> <option value="/release/JDHEDDEN/threads-1.83" >1.83 (JDHEDDEN on 2011-04-21)</option> <option value="/release/JDHEDDEN/threads-1.82" >1.82 (JDHEDDEN on 2010-12-24)</option> <option value="/release/JDHEDDEN/threads-1.81" >1.81 (JDHEDDEN on 2010-09-27)</option> <option value="/release/JDHEDDEN/threads-1.79" >1.79 (JDHEDDEN on 2010-09-24)</option> <option value="/release/JDHEDDEN/threads-1.78" >1.78 (JDHEDDEN on 2010-09-22)</option> <option value="/release/JDHEDDEN/threads-1.77" >1.77 (JDHEDDEN on 2010-03-26)</option> <option value="/release/JDHEDDEN/threads-1.76" >1.76 (JDHEDDEN on 2010-03-10)</option> <option value="/release/JDHEDDEN/threads-1.75" >1.75 (JDHEDDEN on 2009-11-24)</option> <option value="/release/JDHEDDEN/threads-1.74" >1.74 (JDHEDDEN on 2009-08-12)</option> <option value="/release/JDHEDDEN/threads-1.73" >1.73 (JDHEDDEN on 2009-06-09)</option> <option value="/release/JDHEDDEN/threads-1.72" >1.72 (JDHEDDEN on 2009-02-25)</option> <option value="/release/JDHEDDEN/threads-1.71" >1.71 (JDHEDDEN on 2008-06-13)</option> <option value="/release/JDHEDDEN/threads-1.69" >1.69 (JDHEDDEN on 2008-02-22)</option> <option value="/release/JDHEDDEN/threads-1.68" >1.68 (JDHEDDEN on 2008-02-20)</option> <option value="/release/JDHEDDEN/threads-1.67" >1.67 (JDHEDDEN on 2007-09-18)</option> <option value="/release/JDHEDDEN/threads-1.66" >1.66 (JDHEDDEN on 2007-09-14)</option> <option value="/release/JDHEDDEN/threads-1.65" >1.65 (JDHEDDEN on 2007-09-05)</option> <option value="/release/JDHEDDEN/threads-1.64" >1.64 (JDHEDDEN on 2007-08-19)</option> <option value="/release/JDHEDDEN/threads-1.63" >1.63 (JDHEDDEN on 2007-06-27)</option> <option value="/release/JDHEDDEN/threads-1.62" >1.62 (JDHEDDEN on 2007-05-29)</option> <option value="/release/JDHEDDEN/threads-1.61" >1.61 (JDHEDDEN on 2007-03-22)</option> <option value="/release/JDHEDDEN/threads-1.59" >1.59 (JDHEDDEN on 2007-02-07)</option> <option value="/release/JDHEDDEN/threads-1.58" >1.58 (JDHEDDEN on 2007-01-25)</option> <option value="/release/JDHEDDEN/threads-1.57" >1.57 (JDHEDDEN on 2006-12-26)</option> <option value="/release/JDHEDDEN/threads-1.56" >1.56 (JDHEDDEN on 2006-12-15)</option> <option value="/release/JDHEDDEN/threads-1.55" >1.55 (JDHEDDEN on 2006-12-15)</option> <option value="/release/JDHEDDEN/threads-1.54" >1.54 (JDHEDDEN on 2006-12-15)</option> <option value="/release/JDHEDDEN/threads-1.53" >1.53 (JDHEDDEN on 2006-11-28)</option> <option value="/release/JDHEDDEN/threads-1.52" >1.52 (JDHEDDEN on 2006-11-21)</option> <option value="/release/JDHEDDEN/threads-1.51" >1.51 (JDHEDDEN on 2006-11-16)</option> <option value="/release/JDHEDDEN/threads-1.49" >1.49 (JDHEDDEN on 2006-11-03)</option> <option value="/release/JDHEDDEN/threads-1.48" >1.48 (JDHEDDEN on 2006-11-02)</option> <option value="/release/JDHEDDEN/threads-1.47" >1.47 (JDHEDDEN on 2006-10-31)</option> <option value="/release/JDHEDDEN/threads-1.46" >1.46 (JDHEDDEN on 2006-10-30)</option> <option value="/release/JDHEDDEN/threads-1.45" >1.45 (JDHEDDEN on 2006-10-25)</option> <option value="/release/JDHEDDEN/threads-1.44" >1.44 (JDHEDDEN on 2006-10-11)</option> <option value="/release/JDHEDDEN/threads-1.43" >1.43 (JDHEDDEN on 2006-10-06)</option> <option value="/release/JDHEDDEN/threads-1.42" >1.42 (JDHEDDEN on 2006-09-18)</option> <option value="/release/JDHEDDEN/threads-1.41" >1.41 (JDHEDDEN on 2006-09-08)</option> <option value="/release/JDHEDDEN/threads-1.39" >1.39 (JDHEDDEN on 2006-08-30)</option> <option value="/release/JDHEDDEN/threads-1.38" >1.38 (JDHEDDEN on 2006-08-01)</option> <option value="/release/JDHEDDEN/threads-1.37" >1.37 (JDHEDDEN on 2006-07-21)</option> <option value="/release/JDHEDDEN/threads-1.36" >1.36 (JDHEDDEN on 2006-07-11)</option> <option value="/release/JDHEDDEN/threads-1.35" >1.35 (JDHEDDEN on 2006-07-10)</option> <option value="/release/JDHEDDEN/threads-1.34" >1.34 (JDHEDDEN on 2006-07-07)</option> <option value="/release/JDHEDDEN/threads-1.33" >1.33 (JDHEDDEN on 2006-07-05)</option> <option value="/release/JDHEDDEN/threads-1.32" >1.32 (JDHEDDEN on 2006-06-06)</option> <option value="/release/JDHEDDEN/threads-1.31" >1.31 (JDHEDDEN on 2006-05-23)</option> <option value="/release/JDHEDDEN/threads-1.29" >1.29 (JDHEDDEN on 2006-05-19)</option> <option value="/release/JDHEDDEN/threads-1.27" >1.27 (JDHEDDEN on 2006-05-12)</option> <option value="/release/JDHEDDEN/threads-1.26" >1.26 (JDHEDDEN on 2006-05-09)</option> <option value="/release/JDHEDDEN/threads-1.25" >1.25 (JDHEDDEN on 2006-05-04)</option> <option value="/release/JDHEDDEN/threads-1.24" >1.24 (JDHEDDEN on 2006-04-24)</option> <option value="/release/JDHEDDEN/threads-1.23" >1.23 (JDHEDDEN on 2006-04-14)</option> <option value="/release/JDHEDDEN/threads-1.22" >1.22 (JDHEDDEN on 2006-04-08)</option> <option value="/release/JDHEDDEN/threads-1.21" >1.21 (JDHEDDEN on 2006-04-04)</option> <option value="/release/JDHEDDEN/threads-1.19" >1.19 (JDHEDDEN on 2006-03-25)</option> <option value="/release/JDHEDDEN/threads-1.18" >1.18 (JDHEDDEN on 2006-03-24)</option> <option value="/release/JDHEDDEN/threads-1.17" >1.17 (JDHEDDEN on 2006-03-23)</option> <option value="/release/JDHEDDEN/threads-1.16" >1.16 (JDHEDDEN on 2006-03-23)</option> <option value="/release/JDHEDDEN/threads-1.15" >1.15 (JDHEDDEN on 2006-03-22)</option> <option value="/release/JDHEDDEN/threads-1.14" >1.14 (JDHEDDEN on 2006-03-21)</option> <option value="/release/JDHEDDEN/threads-1.13" >1.13 (JDHEDDEN on 2006-03-20)</option> <option value="/release/JDHEDDEN/threads-1.12" >1.12 (JDHEDDEN on 2006-03-19)</option> <option value="/release/JDHEDDEN/threads-1.11" >1.11 (JDHEDDEN on 2006-03-17)</option> <option value="/release/JDHEDDEN/threads-1.09" >1.09 (JDHEDDEN on 2006-03-13)</option> <option value="/release/ABERGMAN/threads-0.03" >0.03 (ABERGMAN on 2001-07-02)</option> <option value="/release/ABERGMAN/threads-0.02" >0.02 (ABERGMAN on 2001-06-30)</option> <option value="/release/ABERGMAN/threads-0.01" >0.01 (ABERGMAN on 2001-06-28)</option> </optgroup> </select> </li> <li class="version-diff"> <select class="select-navigator form-control tool-bar-form"> <option disabled selected>Diff with version</option> <option value="/release/JDHEDDEN/threads-2.21/diff/RURBAN/threads-2.22_01" >2.22_01 DEV (RURBAN on 2018-09-07)</option> <option disabled value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.21" >2.21 (JDHEDDEN on 2018-01-23)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.16" >2.16 (JDHEDDEN on 2017-06-02)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.15" >2.15 (JDHEDDEN on 2017-02-26)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.14" >2.14 (JDHEDDEN on 2017-02-26)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.13" >2.13 (JDHEDDEN on 2017-02-26)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.12" >2.12 (JDHEDDEN on 2016-12-31)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.11" >2.11 (JDHEDDEN on 2016-12-31)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.09" >2.09 (JDHEDDEN on 2016-05-21)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.08" >2.08 (JDHEDDEN on 2016-05-16)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.07" >2.07 (JDHEDDEN on 2016-04-30)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.02" >2.02 (JDHEDDEN on 2015-06-13)</option> <optgroup label="BackPAN">' <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-2.01" >2.01 (JDHEDDEN on 2015-03-08)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.99" >1.99 (JDHEDDEN on 2015-03-06)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.98" >1.98 (JDHEDDEN on 2015-03-05)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.97" >1.97 (JDHEDDEN on 2015-03-04)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.96" >1.96 (JDHEDDEN on 2014-08-28)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.92" >1.92 (JDHEDDEN on 2014-02-04)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.91" >1.91 (JDHEDDEN on 2014-02-04)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.89" >1.89 (JDHEDDEN on 2013-09-30)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.87" >1.87 (JDHEDDEN on 2013-05-29)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.86" >1.86 (JDHEDDEN on 2011-12-14)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.85" >1.85 (JDHEDDEN on 2011-09-03)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.83" >1.83 (JDHEDDEN on 2011-04-21)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.82" >1.82 (JDHEDDEN on 2010-12-24)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.81" >1.81 (JDHEDDEN on 2010-09-27)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.79" >1.79 (JDHEDDEN on 2010-09-24)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.78" >1.78 (JDHEDDEN on 2010-09-22)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.77" >1.77 (JDHEDDEN on 2010-03-26)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.76" >1.76 (JDHEDDEN on 2010-03-10)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.75" >1.75 (JDHEDDEN on 2009-11-24)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.74" >1.74 (JDHEDDEN on 2009-08-12)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.73" >1.73 (JDHEDDEN on 2009-06-09)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.72" >1.72 (JDHEDDEN on 2009-02-25)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.71" >1.71 (JDHEDDEN on 2008-06-13)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.69" >1.69 (JDHEDDEN on 2008-02-22)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.68" >1.68 (JDHEDDEN on 2008-02-20)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.67" >1.67 (JDHEDDEN on 2007-09-18)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.66" >1.66 (JDHEDDEN on 2007-09-14)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.65" >1.65 (JDHEDDEN on 2007-09-05)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.64" >1.64 (JDHEDDEN on 2007-08-19)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.63" >1.63 (JDHEDDEN on 2007-06-27)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.62" >1.62 (JDHEDDEN on 2007-05-29)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.61" >1.61 (JDHEDDEN on 2007-03-22)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.59" >1.59 (JDHEDDEN on 2007-02-07)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.58" >1.58 (JDHEDDEN on 2007-01-25)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.57" >1.57 (JDHEDDEN on 2006-12-26)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.56" >1.56 (JDHEDDEN on 2006-12-15)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.55" >1.55 (JDHEDDEN on 2006-12-15)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.54" >1.54 (JDHEDDEN on 2006-12-15)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.53" >1.53 (JDHEDDEN on 2006-11-28)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.52" >1.52 (JDHEDDEN on 2006-11-21)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.51" >1.51 (JDHEDDEN on 2006-11-16)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.49" >1.49 (JDHEDDEN on 2006-11-03)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.48" >1.48 (JDHEDDEN on 2006-11-02)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.47" >1.47 (JDHEDDEN on 2006-10-31)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.46" >1.46 (JDHEDDEN on 2006-10-30)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.45" >1.45 (JDHEDDEN on 2006-10-25)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.44" >1.44 (JDHEDDEN on 2006-10-11)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.43" >1.43 (JDHEDDEN on 2006-10-06)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.42" >1.42 (JDHEDDEN on 2006-09-18)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.41" >1.41 (JDHEDDEN on 2006-09-08)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.39" >1.39 (JDHEDDEN on 2006-08-30)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.38" >1.38 (JDHEDDEN on 2006-08-01)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.37" >1.37 (JDHEDDEN on 2006-07-21)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.36" >1.36 (JDHEDDEN on 2006-07-11)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.35" >1.35 (JDHEDDEN on 2006-07-10)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.34" >1.34 (JDHEDDEN on 2006-07-07)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.33" >1.33 (JDHEDDEN on 2006-07-05)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.32" >1.32 (JDHEDDEN on 2006-06-06)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.31" >1.31 (JDHEDDEN on 2006-05-23)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.29" >1.29 (JDHEDDEN on 2006-05-19)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.27" >1.27 (JDHEDDEN on 2006-05-12)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.26" >1.26 (JDHEDDEN on 2006-05-09)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.25" >1.25 (JDHEDDEN on 2006-05-04)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.24" >1.24 (JDHEDDEN on 2006-04-24)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.23" >1.23 (JDHEDDEN on 2006-04-14)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.22" >1.22 (JDHEDDEN on 2006-04-08)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.21" >1.21 (JDHEDDEN on 2006-04-04)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.19" >1.19 (JDHEDDEN on 2006-03-25)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.18" >1.18 (JDHEDDEN on 2006-03-24)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.17" >1.17 (JDHEDDEN on 2006-03-23)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.16" >1.16 (JDHEDDEN on 2006-03-23)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.15" >1.15 (JDHEDDEN on 2006-03-22)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.14" >1.14 (JDHEDDEN on 2006-03-21)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.13" >1.13 (JDHEDDEN on 2006-03-20)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.12" >1.12 (JDHEDDEN on 2006-03-19)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.11" >1.11 (JDHEDDEN on 2006-03-17)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/JDHEDDEN/threads-1.09" >1.09 (JDHEDDEN on 2006-03-13)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/ABERGMAN/threads-0.03" >0.03 (ABERGMAN on 2001-07-02)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/ABERGMAN/threads-0.02" >0.02 (ABERGMAN on 2001-06-30)</option> <option value="/release/JDHEDDEN/threads-2.21/diff/ABERGMAN/threads-0.01" >0.01 (ABERGMAN on 2001-06-28)</option> </optgroup> </select> </li> <li> <ul class="dependencies"> <li class="nav-header">Dependencies</li> <li><a href="/pod/Carp" title="Carp" class="ellipsis">Carp</a></li> <li><a href="/pod/Config" title="Config" class="ellipsis">Config</a></li> <li><a href="/pod/ExtUtils::testlib" title="ExtUtils::testlib" class="ellipsis">ExtUtils::testlib</a></li> <li><a href="/pod/Hash::Util" title="Hash::Util" class="ellipsis">Hash::Util</a></li> <li><a href="/pod/IO::File" title="IO::File" class="ellipsis">IO::File</a></li> <li><a href="/pod/Test::More" title="Test::More" class="ellipsis">Test::More</a></li> <li><a href="/pod/XSLoader" title="XSLoader" class="ellipsis">XSLoader</a></li> <li><a href="/pod/overload" title="overload" class="ellipsis">overload</a></li> <li><a href="/pod/strict" title="strict" class="ellipsis">strict</a></li> <li><a href="/pod/warnings" title="warnings" class="ellipsis">warnings</a></li> <li><i class="ttip" title="dynamic_config enabled">and possibly others</i></li> <li> <hr> </li> <li> <a href="/dist/threads/requires">Reverse dependencies</a> </li> <li> <a href="http://deps.cpantesters.org/?module=threads">CPAN Testers List</a> </li> <li> <a href="https://cpandeps.grinnz.com/?dist=threads">Dependency graph</a> </li> </ul> </li> <li class="nav-header">Permalinks</li> <li> <a href="/release/JDHEDDEN/threads-2.21">This version</a> </li> <li> <a href="/dist/threads">Latest version</a> </li> <li> <div class="plussers"> <div class="nav-header">++ed by:</div> <div> <a class="display-all" href="/author/MMUSGROVE"><img src="https://www.gravatar.com/avatar/c8d0367f59978d30016ef08c7a60b961?d=identicon&s=20" title="MMUSGROVE" alt="MMUSGROVE"></a> <a class="display-all" href="/author/EMAZEP"><img src="https://www.gravatar.com/avatar/a700b943268e8937ffd425389d962787?d=identicon&s=20" title="EMAZEP" alt="EMAZEP"></a> <a class="display-all" href="/author/AZJADFTRE"><img src="https://www.gravatar.com/avatar/104622f129da1a6299bef66eb98c6e0e?d=identicon&s=20" title="AZJADFTRE" alt="AZJADFTRE"></a> <a class="display-all" href="/author/RWP"><img src="https://www.gravatar.com/avatar/7110eb2389e69a066d9d7cad7a1cc2bf?d=identicon&s=20" title="RWP" alt="RWP"></a> <a class="display-all" href="/author/MARIOROY"><img src="https://www.gravatar.com/avatar/112c64e088284a78b9afbcb83c125613?d=identicon&s=20" title="MARIOROY" alt="MARIOROY"></a> </div>  <div> <a href="/dist/threads/plussers">10 PAUSE users</a> </div> <div> 4 non-PAUSE users </div> </div> </li> <li> <div> <button class="contributors-show-button btn-link">and 1 contributors</button> <div id="metacpan_contributors" class="slide-out slide-out-hidden"> <div> <ul> <li class="contributor" > Artur Bergman, Jerry D. Hedden <jdhedden AT cpan DOT org> </li> </ul> </div> </div> </div> </li> </ul> </div> </nav> <div class="content-navigation"> <div class="breadcrumbs"> <span> <a data-keyboard-shortcut="g a" rel="author" href="/author/JDHEDDEN" class="author-name">Jerry D. Hedden</a> </span> <span> / </span> <div class="release dist-release status-latest maturity-released"> <span class="dropdown"><b class="caret"></b></span> <select class="select-navigator extend"> <option value="/release/RURBAN/threads-2.22_01" >2.22_01 DEV (RURBAN on 2018-09-07)</option> <option selected value="/release/JDHEDDEN/threads-2.21" >2.21 (JDHEDDEN on 2018-01-23)</option> <option value="/release/JDHEDDEN/threads-2.16" >2.16 (JDHEDDEN on 2017-06-02)</option> <option value="/release/JDHEDDEN/threads-2.15" >2.15 (JDHEDDEN on 2017-02-26)</option> <option value="/release/JDHEDDEN/threads-2.14" >2.14 (JDHEDDEN on 2017-02-26)</option> <option value="/release/JDHEDDEN/threads-2.13" >2.13 (JDHEDDEN on 2017-02-26)</option> <option value="/release/JDHEDDEN/threads-2.12" >2.12 (JDHEDDEN on 2016-12-31)</option> <option value="/release/JDHEDDEN/threads-2.11" >2.11 (JDHEDDEN on 2016-12-31)</option> <option value="/release/JDHEDDEN/threads-2.09" >2.09 (JDHEDDEN on 2016-05-21)</option> <option value="/release/JDHEDDEN/threads-2.08" >2.08 (JDHEDDEN on 2016-05-16)</option> <option value="/release/JDHEDDEN/threads-2.07" >2.07 (JDHEDDEN on 2016-04-30)</option> <option value="/release/JDHEDDEN/threads-2.02" >2.02 (JDHEDDEN on 2015-06-13)</option> <optgroup label="BackPAN">' <option value="/release/JDHEDDEN/threads-2.01" >2.01 (JDHEDDEN on 2015-03-08)</option> <option value="/release/JDHEDDEN/threads-1.99" >1.99 (JDHEDDEN on 2015-03-06)</option> <option value="/release/JDHEDDEN/threads-1.98" >1.98 (JDHEDDEN on 2015-03-05)</option> <option value="/release/JDHEDDEN/threads-1.97" >1.97 (JDHEDDEN on 2015-03-04)</option> <option value="/release/JDHEDDEN/threads-1.96" >1.96 (JDHEDDEN on 2014-08-28)</option> <option value="/release/JDHEDDEN/threads-1.92" >1.92 (JDHEDDEN on 2014-02-04)</option> <option value="/release/JDHEDDEN/threads-1.91" >1.91 (JDHEDDEN on 2014-02-04)</option> <option value="/release/JDHEDDEN/threads-1.89" >1.89 (JDHEDDEN on 2013-09-30)</option> <option value="/release/JDHEDDEN/threads-1.87" >1.87 (JDHEDDEN on 2013-05-29)</option> <option value="/release/JDHEDDEN/threads-1.86" >1.86 (JDHEDDEN on 2011-12-14)</option> <option value="/release/JDHEDDEN/threads-1.85" >1.85 (JDHEDDEN on 2011-09-03)</option> <option value="/release/JDHEDDEN/threads-1.83" >1.83 (JDHEDDEN on 2011-04-21)</option> <option value="/release/JDHEDDEN/threads-1.82" >1.82 (JDHEDDEN on 2010-12-24)</option> <option value="/release/JDHEDDEN/threads-1.81" >1.81 (JDHEDDEN on 2010-09-27)</option> <option value="/release/JDHEDDEN/threads-1.79" >1.79 (JDHEDDEN on 2010-09-24)</option> <option value="/release/JDHEDDEN/threads-1.78" >1.78 (JDHEDDEN on 2010-09-22)</option> <option value="/release/JDHEDDEN/threads-1.77" >1.77 (JDHEDDEN on 2010-03-26)</option> <option value="/release/JDHEDDEN/threads-1.76" >1.76 (JDHEDDEN on 2010-03-10)</option> <option value="/release/JDHEDDEN/threads-1.75" >1.75 (JDHEDDEN on 2009-11-24)</option> <option value="/release/JDHEDDEN/threads-1.74" >1.74 (JDHEDDEN on 2009-08-12)</option> <option value="/release/JDHEDDEN/threads-1.73" >1.73 (JDHEDDEN on 2009-06-09)</option> <option value="/release/JDHEDDEN/threads-1.72" >1.72 (JDHEDDEN on 2009-02-25)</option> <option value="/release/JDHEDDEN/threads-1.71" >1.71 (JDHEDDEN on 2008-06-13)</option> <option value="/release/JDHEDDEN/threads-1.69" >1.69 (JDHEDDEN on 2008-02-22)</option> <option value="/release/JDHEDDEN/threads-1.68" >1.68 (JDHEDDEN on 2008-02-20)</option> <option value="/release/JDHEDDEN/threads-1.67" >1.67 (JDHEDDEN on 2007-09-18)</option> <option value="/release/JDHEDDEN/threads-1.66" >1.66 (JDHEDDEN on 2007-09-14)</option> <option value="/release/JDHEDDEN/threads-1.65" >1.65 (JDHEDDEN on 2007-09-05)</option> <option value="/release/JDHEDDEN/threads-1.64" >1.64 (JDHEDDEN on 2007-08-19)</option> <option value="/release/JDHEDDEN/threads-1.63" >1.63 (JDHEDDEN on 2007-06-27)</option> <option value="/release/JDHEDDEN/threads-1.62" >1.62 (JDHEDDEN on 2007-05-29)</option> <option value="/release/JDHEDDEN/threads-1.61" >1.61 (JDHEDDEN on 2007-03-22)</option> <option value="/release/JDHEDDEN/threads-1.59" >1.59 (JDHEDDEN on 2007-02-07)</option> <option value="/release/JDHEDDEN/threads-1.58" >1.58 (JDHEDDEN on 2007-01-25)</option> <option value="/release/JDHEDDEN/threads-1.57" >1.57 (JDHEDDEN on 2006-12-26)</option> <option value="/release/JDHEDDEN/threads-1.56" >1.56 (JDHEDDEN on 2006-12-15)</option> <option value="/release/JDHEDDEN/threads-1.55" >1.55 (JDHEDDEN on 2006-12-15)</option> <option value="/release/JDHEDDEN/threads-1.54" >1.54 (JDHEDDEN on 2006-12-15)</option> <option value="/release/JDHEDDEN/threads-1.53" >1.53 (JDHEDDEN on 2006-11-28)</option> <option value="/release/JDHEDDEN/threads-1.52" >1.52 (JDHEDDEN on 2006-11-21)</option> <option value="/release/JDHEDDEN/threads-1.51" >1.51 (JDHEDDEN on 2006-11-16)</option> <option value="/release/JDHEDDEN/threads-1.49" >1.49 (JDHEDDEN on 2006-11-03)</option> <option value="/release/JDHEDDEN/threads-1.48" >1.48 (JDHEDDEN on 2006-11-02)</option> <option value="/release/JDHEDDEN/threads-1.47" >1.47 (JDHEDDEN on 2006-10-31)</option> <option value="/release/JDHEDDEN/threads-1.46" >1.46 (JDHEDDEN on 2006-10-30)</option> <option value="/release/JDHEDDEN/threads-1.45" >1.45 (JDHEDDEN on 2006-10-25)</option> <option value="/release/JDHEDDEN/threads-1.44" >1.44 (JDHEDDEN on 2006-10-11)</option> <option value="/release/JDHEDDEN/threads-1.43" >1.43 (JDHEDDEN on 2006-10-06)</option> <option value="/release/JDHEDDEN/threads-1.42" >1.42 (JDHEDDEN on 2006-09-18)</option> <option value="/release/JDHEDDEN/threads-1.41" >1.41 (JDHEDDEN on 2006-09-08)</option> <option value="/release/JDHEDDEN/threads-1.39" >1.39 (JDHEDDEN on 2006-08-30)</option> <option value="/release/JDHEDDEN/threads-1.38" >1.38 (JDHEDDEN on 2006-08-01)</option> <option value="/release/JDHEDDEN/threads-1.37" >1.37 (JDHEDDEN on 2006-07-21)</option> <option value="/release/JDHEDDEN/threads-1.36" >1.36 (JDHEDDEN on 2006-07-11)</option> <option value="/release/JDHEDDEN/threads-1.35" >1.35 (JDHEDDEN on 2006-07-10)</option> <option value="/release/JDHEDDEN/threads-1.34" >1.34 (JDHEDDEN on 2006-07-07)</option> <option value="/release/JDHEDDEN/threads-1.33" >1.33 (JDHEDDEN on 2006-07-05)</option> <option value="/release/JDHEDDEN/threads-1.32" >1.32 (JDHEDDEN on 2006-06-06)</option> <option value="/release/JDHEDDEN/threads-1.31" >1.31 (JDHEDDEN on 2006-05-23)</option> <option value="/release/JDHEDDEN/threads-1.29" >1.29 (JDHEDDEN on 2006-05-19)</option> <option value="/release/JDHEDDEN/threads-1.27" >1.27 (JDHEDDEN on 2006-05-12)</option> <option value="/release/JDHEDDEN/threads-1.26" >1.26 (JDHEDDEN on 2006-05-09)</option> <option value="/release/JDHEDDEN/threads-1.25" >1.25 (JDHEDDEN on 2006-05-04)</option> <option value="/release/JDHEDDEN/threads-1.24" >1.24 (JDHEDDEN on 2006-04-24)</option> <option value="/release/JDHEDDEN/threads-1.23" >1.23 (JDHEDDEN on 2006-04-14)</option> <option value="/release/JDHEDDEN/threads-1.22" >1.22 (JDHEDDEN on 2006-04-08)</option> <option value="/release/JDHEDDEN/threads-1.21" >1.21 (JDHEDDEN on 2006-04-04)</option> <option value="/release/JDHEDDEN/threads-1.19" >1.19 (JDHEDDEN on 2006-03-25)</option> <option value="/release/JDHEDDEN/threads-1.18" >1.18 (JDHEDDEN on 2006-03-24)</option> <option value="/release/JDHEDDEN/threads-1.17" >1.17 (JDHEDDEN on 2006-03-23)</option> <option value="/release/JDHEDDEN/threads-1.16" >1.16 (JDHEDDEN on 2006-03-23)</option> <option value="/release/JDHEDDEN/threads-1.15" >1.15 (JDHEDDEN on 2006-03-22)</option> <option value="/release/JDHEDDEN/threads-1.14" >1.14 (JDHEDDEN on 2006-03-21)</option> <option value="/release/JDHEDDEN/threads-1.13" >1.13 (JDHEDDEN on 2006-03-20)</option> <option value="/release/JDHEDDEN/threads-1.12" >1.12 (JDHEDDEN on 2006-03-19)</option> <option value="/release/JDHEDDEN/threads-1.11" >1.11 (JDHEDDEN on 2006-03-17)</option> <option value="/release/JDHEDDEN/threads-1.09" >1.09 (JDHEDDEN on 2006-03-13)</option> <option value="/release/ABERGMAN/threads-0.03" >0.03 (ABERGMAN on 2001-07-02)</option> <option value="/release/ABERGMAN/threads-0.02" >0.02 (ABERGMAN on 2001-06-30)</option> <option value="/release/ABERGMAN/threads-0.01" >0.01 (ABERGMAN on 2001-06-28)</option> </optgroup> </select> <span class="release-name">threads-2.21</span> </div> <span class="river-gauge-gauge"> <svg width="24px" height="15px" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g> <title> River stage three 
 • 50 direct dependents 
 • 226 total dependents </title> <rect x="0" y="0" width="4" height="15" fill="#7ea3f2" /> <rect x="5" y="0" width="4" height="15" fill="#7ea3f2" /> <rect x="10" y="0" width="4" height="15" fill="#7ea3f2" /> <rect x="15" y="0" width="4" height="15" fill="#e4e2e2" /> <rect x="20" y="0" width="4" height="15" fill="#e4e2e2" /> </g> </svg> </span> <div id="threads-fav" class="show-logged-in"> <form action="/account/favorite/add" style="display: inline" method="POST"> <input type="hidden" name="remove" value="0"> <input type="hidden" name="release" value="threads-2.21"> <input type="hidden" name="author" value="JDHEDDEN"> <input type="hidden" name="distribution" value="threads"> <button type="submit" class="favorite highlight"><span>14</span> ++</button> </form> </div> <div class="show-logged-out"> <button class="fav-not-logged-in favorite highlight"><span>14</span> ++</button> </div> </div> </div> <main class="content"> <div id="metacpan_last-changes" class="well"> <div class="changes-content"> <h2 id="whatsnew">Changes for version 2.21 - 2018-01-22</h2> <div class="change-entries"> <ul> <li class=""><span class="change-entry">Fix to CLANG macros</span> </li> <li class=""><span class="change-entry">Can return subs from threads. See docs.</span> </li> <li class=""><span class="change-entry">Sync from blead</span> </li> </ul> </div> </div> <button class="changes-toggle btn-link">[ <span class="hide-more">Show less</span><span class="show-more">Show more</span> ]</button> </div> <div class="file-group release-modules"> <h2 id="modules">Modules</h2> <div class="release-row"> <div class="left"> <a href="/pod/threads">threads</a> </div> <div class="right"> Perl interpreter-based threads </div> </div> </div> <div class="file-group release-examples"> <h2 id="examples">Examples</h2> <ul> <li> <a href="/release/JDHEDDEN/threads-2.21/source/examples/pool.pl">examples/pool.pl</a> </li> <li> <a href="/release/JDHEDDEN/threads-2.21/source/examples/pool_reuse.pl">examples/pool_reuse.pl</a> </li> </ul> </div> <div class="file-group release-other-files"> <h2 id="other">Other files</h2> <ul> <li> <a href="/release/JDHEDDEN/threads-2.21/source/Changes">Changes</a> </li> <li> <a href="/release/JDHEDDEN/threads-2.21/source/MANIFEST">MANIFEST</a> </li> <li> <a href="/release/JDHEDDEN/threads-2.21/source/META.json">META.json</a> </li> <li> <a href="/release/JDHEDDEN/threads-2.21/source/META.yml">META.yml</a> </li> <li> <a href="/release/JDHEDDEN/threads-2.21/source/Makefile.PL">Makefile.PL</a> </li> <li> <a href="/release/JDHEDDEN/threads-2.21/source/README">README</a> </li> </ul> </div> <div id="metacpan_install-instructions-dialog" class="modal fade"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4 class="modal-title">Module Install Instructions</h4> </div> <div class="modal-body"> <p>To install threads, copy and paste the appropriate command in to your terminal.</p> <p><a href="/dist/App-cpanminus/view/bin/cpanm">cpanm</a></p> <pre><code>cpanm threads</code></pre> <p><a href="/pod/CPAN">CPAN shell</a></p> <pre><code>perl -MCPAN -e shell install threads</code></pre> <p>For more information on module installation, please visit <a href="https://www.cpan.org/modules/INSTALL.html">the detailed CPAN module installation guide</a>.</p> </div> <div class="modal-footer"> <a href="#" data-dismiss="modal" class="btn">Close</a> </div> </div> </div> </div> </main> <div class="content-pagination"> </div> </div> <footer class="footer"> <div class="footer-container"> <div class="footer-social"> <div class="footer-link footer-logo"> <a href="/"> <img src="/static/images/metacpan-logo.svg" alt="MetaCPAN" /> </a> </div> <a class="footer-social-link" href="https://github.com/metacpan"> <i class="fab fa-github-square"></i> </a> <a class="footer-social-link" href="https://fosstodon.org/@metacpan"> <i class="fab fa-mastodon"></i> </a> </div> <div class="footer-links"> <div class="footer-link"> <a href="/about">About</a> </div> <div class="footer-link"> <a href="/about/sponsors">Sponsor</a> </div> <div class="footer-link"> <a 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threads-2.21 - Perl interpreter-based threads - metacpan.org