1<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>queue_me</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Unreliable Guide To Locking"><link rel="up" href="apiref-futex.html" title="Chapter 12. Futex API reference"><link rel="prev" href="API-futex-requeue.html" title="futex_requeue"><link rel="next" href="API-unqueue-me.html" title="unqueue_me"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">queue_me</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-futex-requeue.html">Prev</a> </td><th width="60%" align="center">Chapter 12. Futex API reference</th><td width="20%" align="right"> <a accesskey="n" href="API-unqueue-me.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-queue-me"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>queue_me — 
2     Enqueue the futex_q on the futex_hash_bucket
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">queue_me </b>(</code></td><td><a class="link" href="API-struct-futex-q.html" title="struct futex_q">struct futex_q</a> * <var class="pdparam">q</var>, </td></tr><tr><td> </td><td>struct futex_hash_bucket * <var class="pdparam">hb</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="id-1.14.12.5"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>q</code></em></span></dt><dd><p>
4     The futex_q to enqueue
5    </p></dd><dt><span class="term"><em class="parameter"><code>hb</code></em></span></dt><dd><p>
6     The destination hash bucket
7    </p></dd></dl></div></div><div class="refsect1"><a name="id-1.14.12.6"></a><h2>Description</h2><p>
8   The hb-&gt;lock must be held by the caller, and is released here. A call to
9   <code class="function"><a class="link" href="API-queue-me.html" title="queue_me">queue_me</a></code> is typically paired with exactly one call to <code class="function"><a class="link" href="API-unqueue-me.html" title="unqueue_me">unqueue_me</a></code>.  The
10   exceptions involve the PI related operations, which may use <code class="function">unqueue_me_pi</code>
11   or nothing if the unqueue is done as part of the wake process and the unqueue
12   state is implicit in the state of woken task (see <code class="function"><a class="link" href="API-futex-wait-requeue-pi.html" title="futex_wait_requeue_pi">futex_wait_requeue_pi</a></code> for
13   an example).
14</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-futex-requeue.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="apiref-futex.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-unqueue-me.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">futex_requeue</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">unqueue_me</span></td></tr></table></div></body></html>
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