mirror of
https://github.com/yasuhirokimura/db18
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Yasuhiro KIMURA
130 lines
5.8 KiB
HTML
130 lines
5.8 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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<html xmlns="http://www.w3.org/1999/xhtml">
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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>Failchk Broadcast Notifications</title>
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<link rel="stylesheet" href="gettingStarted.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 Installation and Build Guide" />
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<link rel="up" href="upgrade_61_toc.html" title="Chapter 10. Upgrading Berkeley DB 12.1.6.0 applications to Berkeley DB 12.1.6.1" />
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<link rel="prev" href="upgrade_61_toc.html" title="Chapter 10. Upgrading Berkeley DB 12.1.6.0 applications to Berkeley DB 12.1.6.1" />
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<link rel="next" href="log_nosync.html" title="New Logging Option" />
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</head>
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 18.1.40</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">Failchk Broadcast Notifications</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="upgrade_61_toc.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 10. Upgrading Berkeley DB 12.1.6.0 applications to Berkeley DB 12.1.6.1 </th>
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<td width="20%" align="right"> <a accesskey="n" href="log_nosync.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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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="fcbc_notif"></a>Failchk Broadcast Notifications</h2>
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</div>
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</div>
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</div>
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<div class="toc">
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<dl>
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<dt>
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<span class="sect2">
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<a href="fcbc_notif.html#idm140649572715584">New Parameter Value</a>
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</span>
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</dt>
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<dt>
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<span class="sect2">
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<a href="fcbc_notif.html#idm140649572931056">New Events</a>
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</span>
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</dt>
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</dl>
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</div>
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<p>
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The <a href="../api_reference/C/envfailchk.html" class="olink">DB_ENV->failchk()</a> method now has a new option to notify
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environment processes of an application failure as soon
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as possible. This option causes any thread waiting on a
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mutex owned by a crashed process to return <a href="../programmer_reference/program_errorret.html#program_errorret.DB_RUNRECOVERY" class="olink">
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DB_RUNRECOVERY</a> instead of hanging.
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</p>
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<p>
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This option is enabled at compile time with the new
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configure option
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<a class="link" href="build_unix_conf.html#build_unix_conf.--enable-failchk_broadcast">
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--enable-failchk_broadcast</a>.
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When enabled, this option provides a new timeout. It also
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provides new events that notify the application when a
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thread is about to return <a href="../programmer_reference/program_errorret.html#program_errorret.DB_RUNRECOVERY" class="olink">
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DB_RUNRECOVERY</a>.
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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="idm140649572715584"></a>New Parameter Value</h3>
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</div>
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</div>
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</div>
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<div class="itemizedlist">
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<ul type="disc">
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<li><a href="../api_reference/C/envset_timeout.html#set_timeout_DB_SET_MUTEX_FAILCHK_TIMEOUT" class="olink">DB_SET_MUTEX_FAILCHK_TIMEOUT</a> —
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A new <code class="literal">timeout</code> parameter value for the
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<a href="../api_reference/C/envset_timeout.html" class="olink">DB_ENV->set_timeout()</a> method to indicate how long a thread
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will wait for a mutex lock before checking whether
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<a href="../api_reference/C/envfailchk.html" class="olink">DB_ENV->failchk()</a> has marked the mutex as failed.
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</li>
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</ul>
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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="idm140649572931056"></a>New Events</h3>
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</div>
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</div>
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</div>
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<div class="itemizedlist">
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<ul type="disc">
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<li>
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<a href="../api_reference/C/envevent_notify.html#event_notify_DB_EVENT_FAILCHK_PANIC" class="olink">DB_EVENT_FAILCHK_PANIC</a>
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</li>
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<li>
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<a href="../api_reference/C/envevent_notify.html#event_notify_DB_EVENT_MUTEX_DIED" class="olink">DB_EVENT_MUTEX_DIED</a>
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</li>
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</ul>
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</div>
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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="upgrade_61_toc.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="upgrade_61_toc.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="log_nosync.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">Chapter 10. Upgrading Berkeley DB 12.1.6.0 applications to Berkeley DB 12.1.6.1 </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"> New Logging Option</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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