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_MPOOLFILE->get_priority()</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="mempget_pgcookie.html" title="DB_MPOOLFILE->get_pgcookie()" /> 12 <link rel="next" href="mempset_clear_len.html" title="DB_MPOOLFILE->set_clear_len()" /> 13 </head> 14 <body> 15 <div class="navheader"> 16 <table width="100%" summary="Navigation header"> 17 <tr> 18 <th colspan="3" align="center">DB_MPOOLFILE->get_priority()</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="mempget_pgcookie.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="mempset_clear_len.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="mempget_priority"></a>DB_MPOOLFILE->get_priority()</h2> 35 </div> 36 </div> 37 </div> 38 <pre class="programlisting">#include <db.h> 39 40int 41DB_MPOOLFILE->get_priority(DB_MPOOLFILE *mpf, DB_CACHE_PRIORITY *priorityp); </pre> 42 <p> 43 44 The <code class="methodname">DB_MPOOLFILE->get_priority()</code> method returns the cache priority for 45 the file referenced by the <a class="link" href="memp.html" title="Chapter 8. The DB_MPOOLFILE Handle">DB_MPOOLFILE</a> 46 handle. The priority of a page biases the replacement algorithm to be 47 more or less likely to discard a page when space is needed in the 48 cache. This value is set using the 49 <a class="xref" href="mempset_priority.html" title="DB_MPOOLFILE->set_priority()">DB_MPOOLFILE->set_priority()</a> 50 method. 51 </p> 52 <p> 53 The <code class="methodname">DB_MPOOLFILE->get_priority()</code> method may be called at any time 54 during the life of the application. 55 </p> 56 <p> 57 The <code class="methodname">DB_MPOOLFILE->get_priority()</code> <span> 58 <span> 59 method returns a non-zero error value on failure and 0 on success. 60 </span> 61 62 </span> 63 </p> 64 <div class="sect2" lang="en" xml:lang="en"> 65 <div class="titlepage"> 66 <div> 67 <div> 68 <h3 class="title"><a id="id1691575"></a>Parameters</h3> 69 </div> 70 </div> 71 </div> 72 <div class="sect3" lang="en" xml:lang="en"> 73 <div class="titlepage"> 74 <div> 75 <div> 76 <h4 class="title"><a id="id1691514"></a>priorityp</h4> 77 </div> 78 </div> 79 </div> 80 <p> 81 The <code class="methodname">DB_MPOOLFILE->get_priority()</code> method returns a reference to the 82 cache priority for the file referenced by the 83 <a class="link" href="memp.html" title="Chapter 8. The DB_MPOOLFILE Handle">DB_MPOOLFILE</a> handle in 84 <span class="bold"><strong>priorityp</strong></span>. 85 </p> 86 </div> 87 </div> 88 <div class="sect2" lang="en" xml:lang="en"> 89 <div class="titlepage"> 90 <div> 91 <div> 92 <h3 class="title"><a id="id1691501"></a>Class</h3> 93 </div> 94 </div> 95 </div> 96 <p> 97 <a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a>, <a class="link" href="memp.html" title="Chapter 8. The DB_MPOOLFILE Handle">DB_MPOOLFILE</a> 98 </p> 99 </div> 100 <div class="sect2" lang="en" xml:lang="en"> 101 <div class="titlepage"> 102 <div> 103 <div> 104 <h3 class="title"><a id="id1691649"></a>See Also</h3> 105 </div> 106 </div> 107 </div> 108 <p> 109 <a class="xref" href="memp.html#memplist" title="Memory Pools and Related Methods">Memory Pools and Related Methods</a>, 110 <a class="xref" href="mempset_priority.html" title="DB_MPOOLFILE->set_priority()">DB_MPOOLFILE->set_priority()</a> 111 </p> 112 </div> 113 </div> 114 <div class="navfooter"> 115 <hr /> 116 <table width="100%" summary="Navigation footer"> 117 <tr> 118 <td width="40%" align="left"><a accesskey="p" href="mempget_pgcookie.html">Prev</a> </td> 119 <td width="20%" align="center"> 120 <a accesskey="u" href="memp.html">Up</a> 121 </td> 122 <td width="40%" align="right"> <a accesskey="n" href="mempset_clear_len.html">Next</a></td> 123 </tr> 124 <tr> 125 <td width="40%" align="left" valign="top">DB_MPOOLFILE->get_pgcookie() </td> 126 <td width="20%" align="center"> 127 <a accesskey="h" href="index.html">Home</a> 128 </td> 129 <td width="40%" align="right" valign="top"> DB_MPOOLFILE->set_clear_len()</td> 130 </tr> 131 </table> 132 </div> 133 </body> 134</html> 135