1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
|
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>DbEnv::get_mp_mmapsize()</title>
<link rel="stylesheet" href="apiReference.css" type="text/css" />
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
<link rel="start" href="index.html" title="Berkeley DB C++ API Reference" />
<link rel="up" href="memp.html" title="Chapter 9. The DbMpoolFile Handle" />
<link rel="prev" href="mempget_mp_max_write.html" title="DbEnv::get_mp_max_write()" />
<link rel="next" href="envget_mp_mtxcount.html" title="DbEnv::get_mp_mtxcount()" />
</head>
<body>
<div xmlns="" class="navheader">
<div class="libver">
<p>Library Version 11.2.5.3</p>
</div>
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">DbEnv::get_mp_mmapsize()</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="mempget_mp_max_write.html">Prev</a> </td>
<th width="60%" align="center">Chapter 9.
The DbMpoolFile Handle
</th>
<td width="20%" align="right"> <a accesskey="n" href="envget_mp_mtxcount.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="sect1" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h2 class="title" style="clear: both"><a id="envget_mp_mmapsize"></a>DbEnv::get_mp_mmapsize()</h2>
</div>
</div>
</div>
<pre class="programlisting">#include <db_cxx.h>
int
DbEnv::get_mp_mmapsize(size_t *mp_mmapsizep);</pre>
<p>
The <code class="methodname">DbEnv::get_mp_mmapsize()</code> method returns the the maximum file
size, in bytes, for a file to be mapped into the process address space. This value can be
managed using the <a class="xref" href="envset_mp_mmapsize.html" title="DbEnv::set_mp_mmapsize()">DbEnv::set_mp_mmapsize()</a>
method.
</p>
<p>
The <code class="methodname">DbEnv::get_mp_mmapsize()</code> method may be called at any time during
the life of the application.
</p>
<p>
The <code class="methodname">DbEnv::get_mp_mmapsize()</code> <span>
<span>
method either returns a non-zero error value or throws an
exception that encapsulates a non-zero error value on
failure, and returns 0 on success.
</span>
</span>
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp8633160"></a>Parameters</h3>
</div>
</div>
</div>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="idp8632640"></a>mp_mmapsizep</h4>
</div>
</div>
</div>
<p>
The <code class="methodname">DbEnv::get_mp_mmapsize()</code> method returns the
maximum file map size in <span class="bold"><strong>mp_mmapsizep</strong></span>.
</p>
</div>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp8624800"></a>Class</h3>
</div>
</div>
</div>
<p>
<a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>,
<a class="link" href="memp.html" title="Chapter 9. The DbMpoolFile Handle">DbMpoolFile</a>
</p>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp8631928"></a>See Also</h3>
</div>
</div>
</div>
<p>
<a class="xref" href="memp.html#memplist" title="Memory Pools and Related Methods">Memory Pools and Related Methods</a>,
<a class="xref" href="envset_mp_mmapsize.html" title="DbEnv::set_mp_mmapsize()">DbEnv::set_mp_mmapsize()</a>
</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="mempget_mp_max_write.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="memp.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="envget_mp_mtxcount.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">DbEnv::get_mp_max_write() </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> DbEnv::get_mp_mtxcount()</td>
</tr>
</table>
</div>
</body>
</html>
|