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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>37.7. autoGIL — Global Interpreter Lock handling in event loops — Python 2.7.18 documentation</title> <link rel="stylesheet" href="../_static/classic.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <script type="text/javascript" src="../_static/language_data.js"></script> <script type="text/javascript" src="../_static/sidebar.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Python 2.7.18 documentation" href="../_static/opensearch.xml"/> <link rel="author" title="About these documents" href="../about.html" /> <link rel="index" title="Index" href="../genindex.html" /> <link rel="search" title="Search" href="../search.html" /> <link rel="copyright" title="Copyright" href="../copyright.html" /> <link rel="next" title="37.8. 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You should install the python3 and python3-doc packages and read the <a href="file:///usr/share/doc/python3-doc/html/library/autogil.html"> Python documentation for the Python3 version packaged in this release</a>. </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="carbon.html" title="37.8. Mac OS Toolbox Modules" accesskey="N">next</a> |</li> <li class="right" > <a href="framework.html" title="37.6. FrameWork — Interactive application framework" accesskey="P">previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="https://www.python.org/">Python</a> »</li> <li> <a href="../index.html">Python 2.7.18 documentation</a> » </li> <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> »</li> <li class="nav-item nav-item-2"><a href="mac.html" accesskey="U">37. Mac OS X specific services</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="module-autoGIL"> <span id="autogil-global-interpreter-lock-handling-in-event-loops"></span><h1>37.7. <a class="reference internal" href="#module-autoGIL" title="autoGIL: Global Interpreter Lock handling in event loops. (deprecated) (Mac)"><code class="xref py py-mod docutils literal notranslate"><span class="pre">autoGIL</span></code></a> — Global Interpreter Lock handling in event loops<a class="headerlink" href="#module-autoGIL" title="Permalink to this headline">¶</a></h1> <p>The <a class="reference internal" href="#module-autoGIL" title="autoGIL: Global Interpreter Lock handling in event loops. (deprecated) (Mac)"><code class="xref py py-mod docutils literal notranslate"><span class="pre">autoGIL</span></code></a> module provides a function <a class="reference internal" href="#autoGIL.installAutoGIL" title="autoGIL.installAutoGIL"><code class="xref py py-func docutils literal notranslate"><span class="pre">installAutoGIL()</span></code></a> that automatically locks and unlocks Python’s <a class="reference internal" href="../glossary.html#term-global-interpreter-lock"><span class="xref std std-term">Global Interpreter Lock</span></a> when running an event loop.</p> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">This module has been removed in Python 3.x.</p> </div> <dl class="exception"> <dt id="autoGIL.AutoGILError"> <em class="property">exception </em><code class="descclassname">autoGIL.</code><code class="descname">AutoGILError</code><a class="headerlink" href="#autoGIL.AutoGILError" title="Permalink to this definition">¶</a></dt> <dd><p>Raised if the observer callback cannot be installed, for example because the current thread does not have a run loop.</p> </dd></dl> <dl class="function"> <dt id="autoGIL.installAutoGIL"> <code class="descclassname">autoGIL.</code><code class="descname">installAutoGIL</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#autoGIL.installAutoGIL" title="Permalink to this definition">¶</a></dt> <dd><p>Install an observer callback in the event loop (CFRunLoop) for the current thread, that will lock and unlock the Global Interpreter Lock (GIL) at appropriate times, allowing other Python threads to run while the event loop is idle.</p> <p>Availability: OSX 10.1 or later.</p> </dd></dl> </div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="framework.html" title="previous chapter">37.6. <code class="docutils literal notranslate"><span class="pre">FrameWork</span></code> — Interactive application framework</a></p> <h4>Next topic</h4> <p class="topless"><a href="carbon.html" title="next chapter">37.8. 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