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_cache_max()</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="dbget_mpf.html" title="DB->get_mpf()" /> 12 <link rel="next" href="envget_cachesize.html" title="DB_ENV->get_cachesize()" /> 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_cache_max()</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="dbget_mpf.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="envget_cachesize.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_cache_max"></a>DB_ENV->get_cache_max()</h2> 35 </div> 36 </div> 37 </div> 38 <pre class="programlisting">#include <db.h> 39 40int 41DB_ENV->get_cache_max(DB_ENV *dbenv, u_int32_t *gbytesp, u_int32_t *bytesp); </pre> 42 <p> 43 The <code class="methodname">DB_ENV->get_cache_max()</code> method returns the maximum size of the 44 cache as set using the 45 <a class="xref" href="envset_cache_max.html" title="DB_ENV->set_cache_max()">DB_ENV->set_cache_max()</a> 46 method. 47 </p> 48 <p> 49 The <code class="methodname">DB_ENV->get_cache_max()</code> method may be called at any time during 50 the life of the application. 51 </p> 52 <p> 53 The <code class="methodname">DB_ENV->get_cache_max()</code> <span> 54 <span> 55 method returns a non-zero error value on failure and 0 on success. 56 </span> 57 58 </span> 59 </p> 60 <div class="sect2" lang="en" xml:lang="en"> 61 <div class="titlepage"> 62 <div> 63 <div> 64 <h3 class="title"><a id="id1685514"></a>Parameters</h3> 65 </div> 66 </div> 67 </div> 68 <div class="sect3" lang="en" xml:lang="en"> 69 <div class="titlepage"> 70 <div> 71 <div> 72 <h4 class="title"><a id="id1685578"></a>bytesp</h4> 73 </div> 74 </div> 75 </div> 76 <p> 77 The <span class="bold"><strong>bytesp</strong></span> parameter references 78 memory into which the additional bytes of memory in the cache is 79 copied. 80 </p> 81 </div> 82 <div class="sect3" lang="en" xml:lang="en"> 83 <div class="titlepage"> 84 <div> 85 <div> 86 <h4 class="title"><a id="id1685550"></a>gbytesp</h4> 87 </div> 88 </div> 89 </div> 90 <p> 91 The <span class="bold"><strong>gbytesp</strong></span> parameter references 92 memory into which the gigabytes of memory in the cache is copied. 93 </p> 94 </div> 95 </div> 96 <div class="sect2" lang="en" xml:lang="en"> 97 <div class="titlepage"> 98 <div> 99 <div> 100 <h3 class="title"><a id="id1685723"></a>Class</h3> 101 </div> 102 </div> 103 </div> 104 <p> 105 <a class="link" href="env.html" title="Chapter��5.�� The DB_ENV Handle">DB_ENV</a> 106 </p> 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="id1685635"></a>See Also</h3> 113 </div> 114 </div> 115 </div> 116 <p> 117 <a class="xref" href="env.html#envlist" title="Database Environments and Related Methods">Database Environments and Related Methods</a>, 118 <a class="xref" href="envset_cache_max.html" title="DB_ENV->set_cache_max()">DB_ENV->set_cache_max()</a> 119 </p> 120 </div> 121 </div> 122 <div class="navfooter"> 123 <hr /> 124 <table width="100%" summary="Navigation footer"> 125 <tr> 126 <td width="40%" align="left"><a accesskey="p" href="dbget_mpf.html">Prev</a>��</td> 127 <td width="20%" align="center"> 128 <a accesskey="u" href="memp.html">Up</a> 129 </td> 130 <td width="40%" align="right">��<a accesskey="n" href="envget_cachesize.html">Next</a></td> 131 </tr> 132 <tr> 133 <td width="40%" align="left" valign="top">DB->get_mpf()��</td> 134 <td width="20%" align="center"> 135 <a accesskey="h" href="index.html">Home</a> 136 </td> 137 <td width="40%" align="right" valign="top">��DB_ENV->get_cachesize()</td> 138 </tr> 139 </table> 140 </div> 141 </body> 142</html> 143