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  10 <title>mod_watchdog - Apache HTTP Server Version 2.5</title>
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  21 <p class="apache">Apache HTTP Server Version 2.5</p>
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  26 <div id="page-content">
  27 <div id="preamble"><h1>Apache Module mod_watchdog</h1>
  28 <div class="toplang">
  29 <p><span>Available Languages: </span><a href="../en/mod/mod_watchdog.html" title="English">&nbsp;en&nbsp;</a></p>
  30 </div>
  31 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>provides infrastructure for other modules to periodically run
  32     tasks</td></tr>
  33 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr>
  34 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>watchdog_module</td></tr>
  35 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_watchdog.c</td></tr>
  36 <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.3 and later</td></tr></table>
  37 <h3>Summary</h3>
  38
  39 <p><code class="module"><a href="../mod/mod_watchdog.html">mod_watchdog</a></code> defines programmatic hooks for other modules to
  40 periodically run tasks.  These modules can register handlers for
  41 <code class="module"><a href="../mod/mod_watchdog.html">mod_watchdog</a></code> hooks.  Currently, the following modules in the
  42 Apache distribution use this functionality:</p>
  43 <ul>
  44 <li><code class="module"><a href="../mod/mod_heartbeat.html">mod_heartbeat</a></code></li>
  45 <li><code class="module"><a href="../mod/mod_heartmonitor.html">mod_heartmonitor</a></code></li>
  46 </ul>
  47 <div class="warning">
  48 To allow a module to use <code class="module"><a href="../mod/mod_watchdog.html">mod_watchdog</a></code> functionality,
  49 <code class="module"><a href="../mod/mod_watchdog.html">mod_watchdog</a></code> itself must be statically linked to the server
  50 core or, if a dynamic module, be loaded before the calling module.
  51 </div>
  52 </div>
  53 <div id="quickview"><h3 class="directives">Directives</h3>
  54 <ul id="toc">
  55 <li><img alt="" src="../images/down.gif" /> <a href="#watchdoginterval">WatchdogInterval</a></li>
  56 </ul>
  57 <h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&amp;list_id=144532&amp;product=Apache%20httpd-2&amp;query_format=specific&amp;order=changeddate%20DESC%2Cpriority%2Cbug_severity&amp;component=mod_watchdog">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&amp;component=mod_watchdog">Report a bug</a></li></ul><h3>See also</h3>
  58 <ul class="seealso">
  59 <li><a href="#comments_section">Comments</a></li></ul></div>
  60
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  62 <div class="directive-section"><h2><a name="WatchdogInterval" id="WatchdogInterval">WatchdogInterval</a> <a name="watchdoginterval" id="watchdoginterval">Directive</a></h2>
  63 <table class="directive">
  64 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Watchdog interval in seconds</td></tr>
  65 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>WatchdogInterval <var>number-of-seconds</var></code></td></tr>
  66 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>WatchdogInterval 1</code></td></tr>
  67 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
  68 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
  69 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_watchdog</td></tr>
  70 </table>
  71 <p>Sets the interval at which the watchdog_step hook runs.  Default is to run every
  72 second.</p>
  73
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  77 <p><span>Available Languages: </span><a href="../en/mod/mod_watchdog.html" title="English">&nbsp;en&nbsp;</a></p>
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