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<title>Berkeley DB: log_flush</title>
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<h1>log_flush</h1>
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<h3><pre>
#include &lt;db.h&gt;
<p>
int
log_flush(DB_ENV *env, const DB_LSN *lsn);
</pre></h3>
<h1>Description</h1>
<p>The log_flush function guarantees that all log records whose
DB_LSN values
are less than or equal to the <b>lsn</b> argument have been
written to disk.  If <b>lsn</b> is NULL, all records in the
log are flushed.
<p>The log_flush function returns a non-zero error value on failure and 0 on success.
<h1>Errors</h1>
<p>The log_flush function may fail and return a non-zero error for the following conditions:
<p><dl compact>
<p><dt>EINVAL<dd>An invalid flag value or parameter was specified.
</dl>
<p>The log_flush function may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions.
If a catastrophic error has occurred, the log_flush function may fail and return
<a href="../ref/program/errorret.html#DB_RUNRECOVERY">DB_RUNRECOVERY</a>, in which case all subsequent Berkeley DB calls will fail
in the same way.
<h1>See Also</h1>
<a href="../api_c/env_set_lg_bsize.html">DBENV-&gt;set_lg_bsize</a>,
<a href="../api_c/env_set_lg_max.html">DBENV-&gt;set_lg_max</a>,
<a href="../api_c/log_archive.html">log_archive</a>,
<a href="../api_c/log_compare.html">log_compare</a>,
<a href="../api_c/log_file.html">log_file</a>,
<a href="../api_c/log_flush.html">log_flush</a>,
<a href="../api_c/log_get.html">log_get</a>,
<a href="../api_c/log_put.html">log_put</a>,
<a href="../api_c/log_register.html">log_register</a>,
<a href="../api_c/log_stat.html">log_stat</a>
and
<a href="../api_c/log_unregister.html">log_unregister</a>.
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