1<?xml version="1.0" encoding="UTF-8" standalone="no"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 3<html xmlns="http://www.w3.org/1999/xhtml"> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 6 <title>DbEnv::mutex_stat_print()</title> 7 <link rel="stylesheet" href="apiReference.css" type="text/css" /> 8 <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> 9 <link rel="start" href="index.html" title="Berkeley DB C++ API Reference" /> 10 <link rel="up" href="mutex.html" title="Chapter��10.�� Mutex Methods" /> 11 <link rel="prev" href="mutexstat.html" title="DbEnv::mutex_stat()" /> 12 <link rel="next" href="mutexunlock.html" title="DbEnv::mutex_unlock()" /> 13 </head> 14 <body> 15 <div class="navheader"> 16 <table width="100%" summary="Navigation header"> 17 <tr> 18 <th colspan="3" align="center">DbEnv::mutex_stat_print()</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="mutexstat.html">Prev</a>��</td> 22 <th width="60%" align="center">Chapter��10.�� 23 Mutex Methods 24 </th> 25 <td width="20%" align="right">��<a accesskey="n" href="mutexunlock.html">Next</a></td> 26 </tr> 27 </table> 28 <hr /> 29 </div> 30 <div class="sect1" lang="en" xml:lang="en"> 31 <div class="titlepage"> 32 <div> 33 <div> 34 <h2 class="title" style="clear: both"><a id="mutexstat_print"></a>DbEnv::mutex_stat_print()</h2> 35 </div> 36 </div> 37 </div> 38 <pre class="programlisting">#include <db_cxx.h> 39 40int 41DbEnv::mutex_stat_print(u_int32_t flags);</pre> 42 <p> 43 The <code class="methodname">DbEnv::mutex_stat_print()</code> method displays the mutex subsystem 44 statistical information, as described for the <code class="methodname">DbEnv::mutex_stat()</code> 45 method. The information is printed to a specified output channel (see 46 the <a class="xref" href="envset_msgfile.html" title="DbEnv::set_msgfile()">DbEnv::set_msgfile()</a> 47 method for more information), or passed to an application callback 48 function (see the <a class="xref" href="envset_msgcall.html" title="DbEnv::set_msgcall()">DbEnv::set_msgcall()</a> 49 method for more information). 50 </p> 51 <p> 52 The <code class="methodname">DbEnv::mutex_stat_print()</code> method may not be called before the 53 <a class="xref" href="envopen.html" title="DbEnv::open()">DbEnv::open()</a> method is called. 54 </p> 55 <p> 56 The <code class="methodname">DbEnv::mutex_stat_print()</code> <span> 57 58 <span> 59 method either returns a non-zero error value or throws an 60 exception that encapsulates a non-zero error value on 61 failure, and returns 0 on success. 62 </span> 63 </span> 64 </p> 65 <div class="sect2" lang="en" xml:lang="en"> 66 <div class="titlepage"> 67 <div> 68 <div> 69 <h3 class="title"><a id="id1699722"></a>Parameters</h3> 70 </div> 71 </div> 72 </div> 73 <div class="sect3" lang="en" xml:lang="en"> 74 <div class="titlepage"> 75 <div> 76 <div> 77 <h4 class="title"><a id="id1700144"></a>flags</h4> 78 </div> 79 </div> 80 </div> 81 <p> 82 The <span class="bold"><strong>flags</strong></span> parameter must be set to 0 83 or by bitwise inclusively <span class="bold"><strong>OR</strong></span>'ing 84 together one or more of the following values: 85 </p> 86 <div class="itemizedlist"> 87 <ul type="disc"> 88 <li> 89 <p> 90 <code class="literal">DB_STAT_ALL</code> 91 </p> 92 <p> 93 Display all available information. 94 </p> 95 </li> 96 <li> 97 <p> 98 <code class="literal">DB_STAT_CLEAR</code> 99 </p> 100 <p> 101 Reset statistics after displaying their values. 102 </p> 103 </li> 104 </ul> 105 </div> 106 </div> 107 </div> 108 <div class="sect2" lang="en" xml:lang="en"> 109 <div class="titlepage"> 110 <div> 111 <div> 112 <h3 class="title"><a id="id1700516"></a>Class</h3> 113 </div> 114 </div> 115 </div> 116 <p> 117 <a class="link" href="env.html" title="Chapter��5.�� The DbEnv Handle">DbEnv</a> 118 </p> 119 </div> 120 <div class="sect2" lang="en" xml:lang="en"> 121 <div class="titlepage"> 122 <div> 123 <div> 124 <h3 class="title"><a id="id1700530"></a>See Also</h3> 125 </div> 126 </div> 127 </div> 128 <p> 129 <a class="xref" href="mutex.html#mutexlist" title="Mutex Methods">Mutex Methods</a> 130 </p> 131 </div> 132 </div> 133 <div class="navfooter"> 134 <hr /> 135 <table width="100%" summary="Navigation footer"> 136 <tr> 137 <td width="40%" align="left"><a accesskey="p" href="mutexstat.html">Prev</a>��</td> 138 <td width="20%" align="center"> 139 <a accesskey="u" href="mutex.html">Up</a> 140 </td> 141 <td width="40%" align="right">��<a accesskey="n" href="mutexunlock.html">Next</a></td> 142 </tr> 143 <tr> 144 <td width="40%" align="left" valign="top">DbEnv::mutex_stat()��</td> 145 <td width="20%" align="center"> 146 <a accesskey="h" href="index.html">Home</a> 147 </td> 148 <td width="40%" align="right" valign="top">��DbEnv::mutex_unlock()</td> 149 </tr> 150 </table> 151 </div> 152 </body> 153</html> 154