greg/libdb
1
0
Fork 0
mirror of https://github.com/berkeleydb/libdb.git synced 2024-11-17 01:26:25 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
libdb/docs/api_reference/C/envset_lk_priority.html

179 lines
6.4 KiB
HTML
Raw Normal View History

Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
<?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_ENV-&gt;set_lk_priority()</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="lock.html" title="Chapter 6.  The DB_LOCK Handle" />
<link rel="prev" href="envset_lk_partitions.html" title="DB_ENV-&gt;set_lk_partitions()" />
<link rel="next" href="envset_lk_tablesize.html" title="DB_ENV-&gt;set_lk_tablesize()" />
</head>
<body>
<div xmlns="" class="navheader">
<div class="libver">
Release 5.3.21 5/11/2012
2012-11-14 21:35:20 +00:00
<p>Library Version 11.2.5.3</p>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">DB_ENV-&gt;set_lk_priority()</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="envset_lk_partitions.html">Prev</a> </td>
<th width="60%" align="center">Chapter 6. 
The DB_LOCK Handle
</th>
<td width="20%" align="right"> <a accesskey="n" href="envset_lk_tablesize.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="envset_lk_priority"></a>DB_ENV-&gt;set_lk_priority()</h2>
</div>
</div>
</div>
<pre class="programlisting">#include &lt;db.h&gt;
int
DB_ENV-&gt;set_lk_priority(DB_ENV *dbenv,
u_int32_t lockerid, u_int32_t priority); </pre>
<p>
Set the priority of the given locker. This value is used when
resolving deadlocks, the deadlock resolution algorithm will reject
a lock request from a locker with a lower priority before a request
from a locker with a higher priority.
</p>
<p>
By default, all lockers are created with a priority of 100.
</p>
<p>
The <code class="methodname">DB_ENV-&gt;set_lk_priority()</code> method may be
called at any time during the life of the application.
</p>
<p>
The <code class="methodname">DB_ENV-&gt;set_lk_priority()</code> <span>
<span>
method returns a non-zero error value on failure and 0 on success.
</span>
</span>
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.3.21 5/11/2012
2012-11-14 21:35:20 +00:00
<h3 class="title"><a id="idp60529800"></a>Parameters</h3>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.3.21 5/11/2012
2012-11-14 21:35:20 +00:00
<h4 class="title"><a id="idp60541816"></a>lockerid</h4>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<p>
The <span class="bold"><strong>lockerid</strong></span> parameter
represents a locker returned by
<code class="methodname">DB_ENV-&gt;lock_id()</code>.
</p>
</div>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.3.21 5/11/2012
2012-11-14 21:35:20 +00:00
<h4 class="title"><a id="idp60534600"></a>priority</h4>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<p>
The <span class="bold"><strong>priority</strong></span> parameter
must be a value between 0 and 2^32-1.
</p>
</div>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.3.21 5/11/2012
2012-11-14 21:35:20 +00:00
<h3 class="title"><a id="idp60526280"></a>Errors</h3>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<p>
The <code class="methodname">DB_ENV-&gt;set_lk_priority()</code> <span>
<span>
method may fail and return one of the following non-zero errors:
</span>
</span>
</p>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.3.21 5/11/2012
2012-11-14 21:35:20 +00:00
<h4 class="title"><a id="idp60541880"></a>EINVAL</h4>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<p>
An invalid flag value or parameter was specified.
</p>
</div>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.3.21 5/11/2012
2012-11-14 21:35:20 +00:00
<h3 class="title"><a id="idp60547352"></a>Class</h3>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<p>
<a class="link" href="env.html" title="Chapter 5.  The DB_ENV Handle">DB_ENV</a>,
<a class="link" href="lock.html" title="Chapter 6.  The DB_LOCK Handle">DB_LOCK</a>
</p>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.3.21 5/11/2012
2012-11-14 21:35:20 +00:00
<h3 class="title"><a id="idp60548568"></a>See Also</h3>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<p>
<a class="xref" href="lock.html#locklist" title="Locking Subsystem and Related Methods">Locking Subsystem and Related Methods</a>
</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="envset_lk_partitions.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="lock.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="envset_lk_tablesize.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">DB_ENV-&gt;set_lk_partitions() </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> DB_ENV-&gt;set_lk_tablesize()</td>
</tr>
</table>
</div>
</body>
</html>
Reference in a new issue Copy permalink