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155 lines
6.9 KiB
HTML
155 lines
6.9 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>Chapter 9. Mutex Methods</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="index.html" title="Berkeley DB C API Reference" />
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<link rel="prev" href="mempset_priority.html" title="DB_MPOOLFILE->set_priority()" />
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<link rel="next" href="mutexalloc.html" title="DB_ENV->mutex_alloc()" />
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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 11.2.5.2</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">Chapter 9.
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Mutex Methods
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</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="mempset_priority.html">Prev</a> </td>
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<th width="60%" align="center"> </th>
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<td width="20%" align="right"> <a accesskey="n" href="mutexalloc.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="chapter" 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"><a id="mutex"></a>Chapter 9.
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Mutex Methods
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</h2>
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</div>
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</div>
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</div>
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<p>
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This chapter describes methods that can be used to manage
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mutexes within DB. Many of the methods described here
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are used to configure DB's internal mutex system.
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However, a series of APIs are available for use as a
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general-purpose, cross platform mutex management system.
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These methods can be used independently of DB's main
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purpose, which is as a high-end data management engine.
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</p>
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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="mutexlist"></a>Mutex Methods</h2>
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</div>
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</div>
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</div>
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<div class="navtable">
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<table border="1" width="80%">
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<thead>
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<tr>
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<th>Mutexes and Related Methods</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>
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<a class="xref" href="mutexalloc.html" title="DB_ENV->mutex_alloc()">DB_ENV->mutex_alloc()</a>
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</td>
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<td>Allocate a mutex</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="mutexfree.html" title="DB_ENV->mutex_free()">DB_ENV->mutex_free()</a>
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</td>
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<td>Free a mutex</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="mutexlock.html" title="DB_ENV->mutex_lock()">DB_ENV->mutex_lock()</a>
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</td>
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<td>Lock a mutex</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="mutexstat.html" title="DB_ENV->mutex_stat()">DB_ENV->mutex_stat()</a>
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</td>
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<td>Mutex statistics</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="mutexstat_print.html" title="DB_ENV->mutex_stat_print()">DB_ENV->mutex_stat_print()</a>
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</td>
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<td>Print mutex statistics</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="mutexunlock.html" title="DB_ENV->mutex_unlock()">DB_ENV->mutex_unlock()</a>
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</td>
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<td>Unlock a mutex</td>
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</tr>
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<tr>
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<td colspan="2">
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<span class="bold">
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<strong>Mutex Configuration</strong>
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</span>
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</td>
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</tr>
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<tr>
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<td><a class="xref" href="mutexset_align.html" title="DB_ENV->mutex_set_align()">DB_ENV->mutex_set_align()</a>, <a class="xref" href="mutexget_align.html" title="DB_ENV->mutex_get_align()">DB_ENV->mutex_get_align()</a></td>
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<td>Configure mutex alignment</td>
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</tr>
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<tr>
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<td><a class="xref" href="mutexset_increment.html" title="DB_ENV->mutex_set_increment()">DB_ENV->mutex_set_increment()</a>, <a class="xref" href="mutexget_increment.html" title="DB_ENV->mutex_get_increment()">DB_ENV->mutex_get_increment()</a></td>
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<td>Configure number of additional mutexes</td>
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</tr>
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<tr>
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<td><a class="xref" href="mutexset_init.html" title="DB_ENV->mutex_set_init()">DB_ENV->mutex_set_init()</a>, <a class="xref" href="mutexget_init.html" title="DB_ENV->mutex_get_init()">DB_ENV->mutex_get_init()</a></td>
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<td>Configure initial number of mutexes</td>
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</tr>
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<tr>
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<td><a class="xref" href="mutexset_max.html" title="DB_ENV->mutex_set_max()">DB_ENV->mutex_set_max()</a>, <a class="xref" href="mutexget_max.html" title="DB_ENV->mutex_get_max()">DB_ENV->mutex_get_max()</a></td>
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<td>Configure total number of mutexes</td>
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</tr>
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<tr>
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<td><a class="xref" href="mutexset_tas_spins.html" title="DB_ENV->mutex_set_tas_spins()">DB_ENV->mutex_set_tas_spins()</a>, <a class="xref" href="mutexget_tas_spins.html" title="DB_ENV->mutex_get_tas_spins()">DB_ENV->mutex_get_tas_spins()</a></td>
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<td>Configure test-and-set mutex spin count</td>
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</tr>
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</tbody>
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</table>
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</div>
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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="mempset_priority.html">Prev</a> </td>
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<td width="20%" align="center"> </td>
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<td width="40%" align="right"> <a accesskey="n" href="mutexalloc.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_MPOOLFILE->set_priority() </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_alloc()</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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