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  <div class="section" id="module-autoGIL">
<h1>37.7. <tt class="xref docutils literal"><span class="pre">autoGIL</span></tt> &#8212; Global Interpreter Lock handling in event loops<a class="headerlink" href="#module-autoGIL" title="Permalink to this headline">¶</a></h1>
<p><em>Platforms: </em>Mac</p>
<p>The <tt class="xref docutils literal"><span class="pre">autoGIL</span></tt> module provides a function <a title="autoGIL.installAutoGIL" class="reference internal" href="#autoGIL.installAutoGIL"><tt class="xref docutils literal"><span class="pre">installAutoGIL()</span></tt></a> that
automatically locks and unlocks Python&#8217;s <a class="reference external" href="../glossary.html#term-global-interpreter-lock"><em class="xref">Global Interpreter Lock</em></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><tt class="descclassname">autoGIL.</tt><tt class="descname">AutoGILError</tt><a class="headerlink" href="#autoGIL.AutoGILError" title="Permalink to this definition">¶</a></dt>
<dd>Raised if the observer callback cannot be installed, for example because the
current thread does not have a run loop.</dd></dl>

<dl class="function">
<dt id="autoGIL.installAutoGIL">
<tt class="descclassname">autoGIL.</tt><tt class="descname">installAutoGIL</tt><big>(</big><big>)</big><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>

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