<?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>Db::get_pagesize()</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="db.html" title="Chapter 2. The Db Handle" /> <link rel="prev" href="dbget_partition_keys.html" title="Db::get_partition_keys()" /> <link rel="next" href="dbget_priority.html" title="Db::get_priority()" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">Db::get_pagesize()</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="dbget_partition_keys.html">Prev</a> </td> <th width="60%" align="center">Chapter 2. The Db Handle </th> <td width="20%" align="right"> <a accesskey="n" href="dbget_priority.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="dbget_pagesize"></a>Db::get_pagesize()</h2> </div> </div> </div> <pre class="programlisting">#include <db_cxx.h> int Db::get_pagesize(u_int32_t *pagesizep);</pre> <p> The <code class="methodname">Db::get_pagesize()</code> method returns the database's current page size, as set by the <a class="xref" href="dbset_pagesize.html" title="Db::set_pagesize()">Db::set_pagesize()</a> method. Note that if <code class="methodname">Db::set_pagesize()</code> was not called by your application, then the default pagesize is selected based on the underlying filesystem I/O block size. If you call <code class="methodname">Db::get_pagesize()</code> before you have opened the database, the value returned by this method is therefore the underlying filesystem I/O block size. </p> <p> The <code class="methodname">Db::get_pagesize()</code> method may be called only after the database has been opened. </p> <p> The <code class="methodname">Db::get_pagesize()</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="id1637705"></a>Parameters</h3> </div> </div> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="id1637612"></a>pagesizep</h4> </div> </div> </div> <p> The <code class="methodname">Db::get_pagesize()</code> method returns the page size in <span class="bold"><strong>pagesizep</strong></span>. </p> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="id1637706"></a>Class</h3> </div> </div> </div> <p> <a class="link" href="db.html" title="Chapter 2. The Db Handle">Db</a> </p> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="id1637444"></a>See Also</h3> </div> </div> </div> <p> <a class="xref" href="db.html#dblist" title="Database and Related Methods">Database and Related Methods</a>, <a class="xref" href="dbset_pagesize.html" title="Db::set_pagesize()">Db::set_pagesize()</a> </p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="dbget_partition_keys.html">Prev</a> </td> <td width="20%" align="center"> <a accesskey="u" href="db.html">Up</a> </td> <td width="40%" align="right"> <a accesskey="n" href="dbget_priority.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">Db::get_partition_keys() </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> Db::get_priority()</td> </tr> </table> </div> </body> </html>