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>DB_ENV->get_cachesize()</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="memp.html" title="Chapter��8.�� The DB_MPOOLFILE Handle" /> 11 <link rel="prev" href="envget_cache_max.html" title="DB_ENV->get_cache_max()" /> 12 <link rel="next" href="mempget_mp_max_openfd.html" title="DB_ENV->get_mp_max_openfd()" /> 13 </head> 14 <body> 15 <div class="navheader"> 16 <table width="100%" summary="Navigation header"> 17 <tr> 18 <th colspan="3" align="center">DB_ENV->get_cachesize()</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="envget_cache_max.html">Prev</a>��</td> 22 <th width="60%" align="center">Chapter��8.�� 23 The DB_MPOOLFILE Handle 24 </th> 25 <td width="20%" align="right">��<a accesskey="n" href="mempget_mp_max_openfd.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="envget_cachesize"></a>DB_ENV->get_cachesize()</h2> 35 </div> 36 </div> 37 </div> 38 <pre class="programlisting">#include <db.h> 39 40int 41DB_ENV->get_cachesize(DB_ENV *dbenv, 42 u_int32_t *gbytesp, u_int32_t *bytesp, int *ncachep); </pre> 43 <p> 44 The <code class="methodname">DB_ENV->get_cachesize()</code> method returns the current size and 45 composition of the cache, as set using the 46 <a class="xref" href="envset_cachesize.html" title="DB_ENV->set_cachesize()">DB_ENV->set_cachesize()</a> 47 method. 48 </p> 49 <p> 50 The <code class="methodname">DB_ENV->get_cachesize()</code> method may be called at any time during 51 the life of the application. 52 </p> 53 <p> 54 The <code class="methodname">DB_ENV->get_cachesize()</code> <span> 55 <span> 56 method returns a non-zero error value on failure and 0 on success. 57 </span> 58 59 </span> 60 </p> 61 <div class="sect2" lang="en" xml:lang="en"> 62 <div class="titlepage"> 63 <div> 64 <div> 65 <h3 class="title"><a id="id1685732"></a>Parameters</h3> 66 </div> 67 </div> 68 </div> 69 <div class="sect3" lang="en" xml:lang="en"> 70 <div class="titlepage"> 71 <div> 72 <div> 73 <h4 class="title"><a id="id1685726"></a>bytesp</h4> 74 </div> 75 </div> 76 </div> 77 <p> 78 The <span class="bold"><strong>bytesp</strong></span> parameter references 79 memory into which the additional bytes of memory in the cache is 80 copied. 81 </p> 82 </div> 83 <div class="sect3" lang="en" xml:lang="en"> 84 <div class="titlepage"> 85 <div> 86 <div> 87 <h4 class="title"><a id="id1685857"></a>gbytesp</h4> 88 </div> 89 </div> 90 </div> 91 <p> 92 The <span class="bold"><strong>gbytesp</strong></span> parameter references 93 memory into which the gigabytes of memory in the cache is copied. 94 </p> 95 </div> 96 <div class="sect3" lang="en" xml:lang="en"> 97 <div class="titlepage"> 98 <div> 99 <div> 100 <h4 class="title"><a id="id1685504"></a>ncachep</h4> 101 </div> 102 </div> 103 </div> 104 <p> 105 The <span class="bold"><strong>ncachep</strong></span> parameter references 106 memory into which the number of caches is copied. 107 </p> 108 </div> 109 </div> 110 <div class="sect2" lang="en" xml:lang="en"> 111 <div class="titlepage"> 112 <div> 113 <div> 114 <h3 class="title"><a id="id1685665"></a>Class</h3> 115 </div> 116 </div> 117 </div> 118 <p> 119 <a class="link" href="env.html" title="Chapter��5.�� The DB_ENV Handle">DB_ENV</a> 120 </p> 121 </div> 122 <div class="sect2" lang="en" xml:lang="en"> 123 <div class="titlepage"> 124 <div> 125 <div> 126 <h3 class="title"><a id="id1685666"></a>See Also</h3> 127 </div> 128 </div> 129 </div> 130 <p> 131 <a class="xref" href="memp.html#memplist" title="Memory Pools and Related Methods">Memory Pools and Related Methods</a>, 132 <a class="xref" href="env.html#envlist" title="Database Environments and Related Methods">Database Environments and Related Methods</a>, 133 <a class="xref" href="envset_cachesize.html" title="DB_ENV->set_cachesize()">DB_ENV->set_cachesize()</a> 134 </p> 135 </div> 136 </div> 137 <div class="navfooter"> 138 <hr /> 139 <table width="100%" summary="Navigation footer"> 140 <tr> 141 <td width="40%" align="left"><a accesskey="p" href="envget_cache_max.html">Prev</a>��</td> 142 <td width="20%" align="center"> 143 <a accesskey="u" href="memp.html">Up</a> 144 </td> 145 <td width="40%" align="right">��<a accesskey="n" href="mempget_mp_max_openfd.html">Next</a></td> 146 </tr> 147 <tr> 148 <td width="40%" align="left" valign="top">DB_ENV->get_cache_max()��</td> 149 <td width="20%" align="center"> 150 <a accesskey="h" href="index.html">Home</a> 151 </td> 152 <td width="40%" align="right" valign="top">��DB_ENV->get_mp_max_openfd()</td> 153 </tr> 154 </table> 155 </div> 156 </body> 157</html> 158