2011-09-13 17:44:24 +00:00
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<title>DB_ENV->repmgr_stat()</title>
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<link rel="up" href="rep.html" title="Chapter 10. Replication Methods" />
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<div class="libver">
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2012-11-14 21:35:20 +00:00
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<p>Library Version 11.2.5.3</p>
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2011-09-13 17:44:24 +00:00
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">DB_ENV->repmgr_stat()</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="repmgrstart.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 10.
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Replication Methods
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="repmgrstat_print.html">Next</a></td>
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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="repmgrstat"></a>DB_ENV->repmgr_stat()</h2>
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</div>
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</div>
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<pre class="programlisting">#include <db.h>
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int
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DB_ENV->repmgr_stat(DB_ENV *env, DB_REPMGR_STAT **statp,
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u_int32_t flags); </pre>
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<p>
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The <code class="methodname">DB_ENV->repmgr_stat()</code> method returns the Replication Manager
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statistics.
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</p>
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<p>
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The <code class="methodname">DB_ENV->repmgr_stat()</code> method creates a statistical structure of
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type <code class="literal">DB_REPMGR_STAT</code> and copies a pointer to it into a user-specified
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memory location.
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</p>
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<p>
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Statistical structures are stored in allocated memory. If application-specific allocation
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routines have been declared (see <a class="xref" href="envset_alloc.html" title="DB_ENV->set_alloc()">DB_ENV->set_alloc()</a>
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for more information), they are used to allocate the memory; otherwise, the standard
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C library <span class="bold"><strong>malloc</strong></span>(3) is used. The caller is responsible
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for deallocating the memory. To deallocate the memory, free the memory reference;
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references inside the returned memory need not be individually freed.
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</p>
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<p>
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The following <code class="literal">DB_REPMGR_STAT</code> fields will be filled in:
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</p>
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<div class="itemizedlist">
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<ul type="disc">
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<li>
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<p>
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<span class="bold"><strong>uintmax_t st_connect_fail;</strong></span>
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</p>
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<p>
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The number of times an attempt to open a new TCP/IP connection failed.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>uintmax_t st_connection_drop;</strong></span>
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</p>
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<p>
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The number of times an existing TCP/IP connection
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failed.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>uintmax_t st_msgs_dropped;</strong></span>
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</p>
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<p>
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The number of outgoing messages that were completely dropped, because
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the outgoing message queue was full. (Berkeley DB replication is
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tolerant of dropped messages, and will automatically request
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retransmission of any missing messages as needed.)
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>uintmax_t st_msgs_queued;</strong></span>
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</p>
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<p>
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The number of outgoing messages which could not be transmitted
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immediately, due to a full network buffer, and had to be queued for
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later delivery.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>uintmax_t st_perm_failed;</strong></span>
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</p>
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<p>
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The number of times a message critical for maintaining database
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integrity (for example, a transaction commit), originating at this
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site, did not receive sufficient acknowledgement from clients,
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according to the configured acknowledgement policy and acknowledgement
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timeout.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>uintmax_t st_elect_threads;</strong></span>
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</p>
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<p>
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The number of currently active election threads.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>uintmax_t st_max_elect_threads;</strong></span>
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</p>
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<p>
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The number of election threads for which space is reserved.
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</p>
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</li>
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</ul>
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</div>
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<p>
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The <code class="methodname">DB_ENV->repmgr_stat()</code> method may not be called before the
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<a class="xref" href="envopen.html" title="DB_ENV->open()">DB_ENV->open()</a> method is called.
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</p>
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<p>
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The <code class="methodname">DB_ENV->repmgr_stat()</code> <span>
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<span>
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method returns a non-zero error value on failure and 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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2012-11-14 21:35:20 +00:00
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<h3 class="title"><a id="idp62465880"></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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2012-11-14 21:35:20 +00:00
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<h4 class="title"><a id="idp62467616"></a>statp</h4>
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2011-09-13 17:44:24 +00:00
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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 <span class="bold"><strong>statp</strong></span> parameter references memory
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into which a pointer to the allocated statistics structure is copied.
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</p>
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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="idp62457520"></a>flags</h4>
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2011-09-13 17:44:24 +00:00
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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 <span class="bold"><strong>flags</strong></span> parameter must be set to 0
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or the following value:
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</p>
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<div class="itemizedlist">
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<ul type="disc">
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<li>
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<p>
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<code class="literal">DB_STAT_CLEAR</code>
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</p>
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<p>
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Reset statistics after returning their values.
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</p>
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</li>
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</ul>
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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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2012-11-14 21:35:20 +00:00
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<h3 class="title"><a id="idp62477376"></a>Errors</h3>
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2011-09-13 17:44:24 +00:00
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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">DB_ENV->repmgr_stat()</code> <span>
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<span>
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method may fail and return one 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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2012-11-14 21:35:20 +00:00
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<h4 class="title"><a id="idp62481696"></a>EINVAL</h4>
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2011-09-13 17:44:24 +00:00
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</div>
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</div>
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</div>
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<p>
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If the method was called before <a class="xref" href="envopen.html" title="DB_ENV->open()">DB_ENV->open()</a>
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was called; or if an invalid flag value or parameter was specified.
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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="idp62482776"></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 DB_ENV Handle">DB_ENV</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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2012-11-14 21:35:20 +00:00
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<h3 class="title"><a id="idp62483984"></a>See Also</h3>
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2011-09-13 17:44:24 +00:00
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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="rep.html#replist" title="Replication and Related Methods">Replication and Related Methods</a>
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</p>
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</div>
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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="repmgrstart.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="rep.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="repmgrstat_print.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">DB_ENV->repmgr_start() </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"> DB_ENV->repmgr_stat_print()</td>
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</tr>
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</table>
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</body>
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