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158 lines
5.7 KiB
HTML
158 lines
5.7 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>DB_ENV->mutex_free()</title>
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<link rel="stylesheet" href="apiReference.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB C API Reference" />
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<link rel="up" href="mutex.html" title="Chapter 9. Mutex Methods" />
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<link rel="prev" href="mutexalloc.html" title="DB_ENV->mutex_alloc()" />
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<link rel="next" href="mutexget_align.html" title="DB_ENV->mutex_get_align()" />
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</head>
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 11.2.5.3</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">DB_ENV->mutex_free()</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="mutexalloc.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 9.
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Mutex Methods
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="mutexget_align.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="mutexfree"></a>DB_ENV->mutex_free()</h2>
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</div>
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</div>
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</div>
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<pre class="programlisting">#include <db.h>
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int
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DB_ENV->mutex_free(DB_ENV *dbenv, db_mutex_t mutex); </pre>
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<p>
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The <code class="methodname">DB_ENV->mutex_free()</code> method discards a mutex allocated by
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<a class="xref" href="mutexalloc.html" title="DB_ENV->mutex_alloc()">DB_ENV->mutex_alloc()</a>.
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</p>
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<p>
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The <code class="methodname">DB_ENV->mutex_free()</code> method may not be called before the
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<a class="xref" href="envopen.html" title="DB_ENV->open()">DB_ENV->open()</a> method is called.
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</p>
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<p>
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The <code class="methodname">DB_ENV->mutex_free()</code> <span>
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<span>
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method returns a non-zero error value on failure and 0 on success.
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</span>
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</span>
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</p>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="idp61614728"></a>Parameters</h3>
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</div>
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</div>
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</div>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h4 class="title"><a id="idp61624640"></a>mutex</h4>
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</div>
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</div>
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</div>
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<p>
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The <span class="bold"><strong>mutex</strong></span> parameter is a mutex
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previously allocated by
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<a class="xref" href="mutexalloc.html" title="DB_ENV->mutex_alloc()">DB_ENV->mutex_alloc()</a>.
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</p>
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</div>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="idp61647720"></a>Errors</h3>
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</div>
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</div>
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</div>
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<p>
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The <code class="methodname">DB_ENV->mutex_free()</code> <span>
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<span>
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method may fail and return one of the following non-zero errors:
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</span>
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</span>
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</p>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h4 class="title"><a id="idp61643528"></a>EINVAL</h4>
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</div>
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</div>
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</div>
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<p>
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An invalid flag value or parameter was specified.
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</p>
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</div>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="idp61646856"></a>Class</h3>
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</div>
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</div>
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</div>
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<p>
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<a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a>
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</p>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="idp61625536"></a>See Also</h3>
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</div>
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</div>
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</div>
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<p>
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<a class="xref" href="mutex.html#mutexlist" title="Mutex Methods">Mutex Methods</a>
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</p>
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</div>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="mutexalloc.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="mutex.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="mutexget_align.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">DB_ENV->mutex_alloc() </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> DB_ENV->mutex_get_align()</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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