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::lock_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="lock.html" title="Chapter 7. The DbLock Handle" /> 11 <link rel="prev" href="lockstat.html" title="DbEnv::lock_stat()" /> 12 <link rel="next" href="lockvec.html" title="DbEnv::lock_vec()" /> 13 </head> 14 <body> 15 <div class="navheader"> 16 <table width="100%" summary="Navigation header"> 17 <tr> 18 <th colspan="3" align="center">DbEnv::lock_stat_print()</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="lockstat.html">Prev</a> </td> 22 <th width="60%" align="center">Chapter 7. 23 The DbLock Handle 24 </th> 25 <td width="20%" align="right"> <a accesskey="n" href="lockvec.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="lockstat_print"></a>DbEnv::lock_stat_print()</h2> 35 </div> 36 </div> 37 </div> 38 <pre class="programlisting">#include <db_cxx.h> 39 40int 41DbEnv::lock_stat_print(u_int32_t flags);</pre> 42 <p> 43 The <code class="methodname">DbEnv::lock_stat_print()</code> method displays the locking subsystem 44 statistical information, as described for the <code class="methodname">DbEnv::lock_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 49 <a class="xref" href="envset_msgcall.html" title="DbEnv::set_msgcall()">DbEnv::set_msgcall()</a> 50 method for more information). 51 </p> 52 <p> 53 The <code class="methodname">DbEnv::lock_stat_print()</code> method may not be called before the 54 <a class="xref" href="envopen.html" title="DbEnv::open()">DbEnv::open()</a> method is 55 called. 56 </p> 57 <p> 58 The <code class="methodname">DbEnv::lock_stat_print()</code> <span> 59 60 <span> 61 method either returns a non-zero error value or throws an 62 exception that encapsulates a non-zero error value on 63 failure, and returns 0 on success. 64 </span> 65 </span> 66 </p> 67 <div class="sect2" lang="en" xml:lang="en"> 68 <div class="titlepage"> 69 <div> 70 <div> 71 <h3 class="title"><a id="id1682993"></a>Parameters</h3> 72 </div> 73 </div> 74 </div> 75 <div class="sect3" lang="en" xml:lang="en"> 76 <div class="titlepage"> 77 <div> 78 <div> 79 <h4 class="title"><a id="id1683028"></a>flags</h4> 80 </div> 81 </div> 82 </div> 83 <p> 84 The <span class="bold"><strong>flags</strong></span> parameter must be set to 0 85 or by bitwise inclusively <span class="bold"><strong>OR</strong></span>'ing 86 together one or more of the following values: 87 </p> 88 <div class="itemizedlist"> 89 <ul type="disc"> 90 <li> 91 <p><a id="stat_print_DB_STAT_ALL"></a> 92 <code class="literal">DB_STAT_ALL</code> 93 </p> 94 <p> 95 Display all available information. 96 </p> 97 </li> 98 <li> 99 <p><a id="stat_print_DB_STAT_CLEAR"></a> 100 <code class="literal">DB_STAT_CLEAR</code> 101 </p> 102 <p> 103 Reset statistics after displaying their values. 104 </p> 105 </li> 106 <li> 107 <p><a id="stat_print_DB_STAT_LOCK_CONF"></a> 108 <code class="literal">DB_STAT_LOCK_CONF</code> 109 </p> 110 <p> 111 Display the lock conflict matrix. 112 </p> 113 </li> 114 <li> 115 <p><a id="stat_print_DB_STAT_LOCK_LOCKERS"></a> 116 <code class="literal">DB_STAT_LOCK_LOCKERS</code> 117 </p> 118 <p> 119 Display the lockers within hash chains. 120 </p> 121 </li> 122 <li> 123 <p><a id="stat_print_DB_STAT_LOCK_OBJECTS"></a> 124 <code class="literal">DB_STAT_LOCK_OBJECTS</code> 125 </p> 126 <p> 127 Display the lock objects within hash chains. 128 </p> 129 </li> 130 <li> 131 <p><a id="stat_print_DB_STAT_LOCK_PARAMS"></a> 132 <code class="literal">DB_STAT_LOCK_PARAMS</code> 133 </p> 134 <p> 135 Display the locking subsystem parameters. 136 </p> 137 </li> 138 </ul> 139 </div> 140 </div> 141 </div> 142 <div class="sect2" lang="en" xml:lang="en"> 143 <div class="titlepage"> 144 <div> 145 <div> 146 <h3 class="title"><a id="id1683329"></a>Class</h3> 147 </div> 148 </div> 149 </div> 150 <p> 151 <a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>, 152 <a class="link" href="lock.html" title="Chapter 7. The DbLock Handle">DbLock</a> 153 </p> 154 </div> 155 <div class="sect2" lang="en" xml:lang="en"> 156 <div class="titlepage"> 157 <div> 158 <div> 159 <h3 class="title"><a id="id1683102"></a>See Also</h3> 160 </div> 161 </div> 162 </div> 163 <p> 164 <a class="xref" href="lock.html#locklist" title="Locking Subsystem and Related Methods">Locking Subsystem and Related Methods</a> 165 </p> 166 </div> 167 </div> 168 <div class="navfooter"> 169 <hr /> 170 <table width="100%" summary="Navigation footer"> 171 <tr> 172 <td width="40%" align="left"><a accesskey="p" href="lockstat.html">Prev</a> </td> 173 <td width="20%" align="center"> 174 <a accesskey="u" href="lock.html">Up</a> 175 </td> 176 <td width="40%" align="right"> <a accesskey="n" href="lockvec.html">Next</a></td> 177 </tr> 178 <tr> 179 <td width="40%" align="left" valign="top">DbEnv::lock_stat() </td> 180 <td width="20%" align="center"> 181 <a accesskey="h" href="index.html">Home</a> 182 </td> 183 <td width="40%" align="right" valign="top"> DbEnv::lock_vec()</td> 184 </tr> 185 </table> 186 </div> 187 </body> 188</html> 189