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HTML
165 lines
6.4 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>DbEnv::get_lk_max_locks()</title>
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<link rel="stylesheet" href="apiReference.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB C++ API Reference" />
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<link rel="up" href="lock.html" title="Chapter 7. The DbLock Handle" />
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<link rel="prev" href="envget_lk_max_lockers.html" title="DbEnv::get_lk_max_lockers()" />
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<body>
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<div xmlns="" class="navheader">
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<p>Library Version 11.2.5.2</p>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">DbEnv::get_lk_max_locks()</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="envget_lk_max_lockers.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 7.
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The DbLock Handle
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="envget_lk_max_objects.html">Next</a></td>
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</tr>
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</table>
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<hr />
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="envget_lk_max_locks"></a>DbEnv::get_lk_max_locks()</h2>
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</div>
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</div>
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</div>
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<pre class="programlisting">#include <db_cxx.h>
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int
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DbEnv::get_lk_max_locks(u_int32_t *lk_maxp);</pre>
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<p>
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The <code class="methodname">DbEnv::get_lk_max_locks()</code> method returns the maximum number of
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potential locks. You can configure this using the
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<a class="xref" href="envset_lk_max_locks.html" title="DbEnv::set_lk_max_locks()">DbEnv::set_lk_max_locks()</a>
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method.
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</p>
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<p>
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The <code class="methodname">DbEnv::get_lk_max_locks()</code> method may be called at any time
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during the life of the application.
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</p>
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<p>
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The <code class="methodname">DbEnv::get_lk_max_locks()</code> <span>
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<span>
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method either returns a non-zero error value or throws an
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exception that encapsulates a non-zero error value on
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failure, and returns 0 on success.
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</span>
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</span>
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</p>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="id3630701"></a>Parameters</h3>
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</div>
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</div>
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</div>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h4 class="title"><a id="id3630690"></a>lk_maxp</h4>
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</div>
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</div>
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</div>
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<p>
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The <code class="methodname">DbEnv::get_lk_max_locks()</code> method returns the maximum number of
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locks in <span class="bold"><strong>lk_maxp</strong></span>.
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</p>
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</div>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="id3630635"></a>Errors</h3>
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</div>
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</div>
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</div>
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<p>
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The <code class="methodname">DbEnv::get_lk_max_locks()</code> <span>
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<span>
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method may fail and throw a <a class="link" href="dbexception.html" title="Chapter 6. The DbException Class">DbException</a>
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exception, encapsulating one of the following non-zero errors, or return one
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of the following non-zero errors:
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</span>
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</span>
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</p>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h4 class="title"><a id="id3630812"></a>EINVAL</h4>
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</div>
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</div>
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</div>
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<p>
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The method was called on an environment which had been
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opened without being configured for locking.
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</p>
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</div>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="id3630794"></a>Class</h3>
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</div>
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</div>
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</div>
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<p>
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<a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>, <a class="link" href="lock.html" title="Chapter 7. The DbLock Handle">DbLock</a>
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</p>
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</div>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="id3630504"></a>See Also</h3>
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</div>
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</div>
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</div>
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<p>
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<a class="xref" href="lock.html#locklist" title="Locking Subsystem and Related Methods">Locking Subsystem and Related Methods</a>,
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<a class="xref" href="envset_lk_max_locks.html" title="DbEnv::set_lk_max_locks()">DbEnv::set_lk_max_locks()</a>
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</p>
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</div>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="envget_lk_max_lockers.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="lock.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="envget_lk_max_objects.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">DbEnv::get_lk_max_lockers() </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> DbEnv::get_lk_max_objects()</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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