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<h1>memp_fsync</h1>
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<h3><pre>
#include <db.h>
<p>
int
memp_fsync(DB_MPOOLFILE *mpf);
</pre></h3>
<h1>Description</h1>
<p>The memp_fsync function writes all pages associated with the
DB_MPOOLFILE, that were marked as modified using <a href="../api_c/memp_fput.html">memp_fput</a>
or <a href="../api_c/memp_fset.html">memp_fset</a>, back to the source file. If any of the modified
pages are also <i>pinned</i> (i.e., currently referenced by this or
another process) memp_fsync will ignore them.
<p>The memp_fsync function returns a non-zero error value on failure, 0 on success, and returns <a href="../api_c/memp_fsync.html#DB_INCOMPLETE">DB_INCOMPLETE</a> if there were pages which were
modified but which memp_fsync was unable to write immediately.
<h1>Errors</h1>
<p>The memp_fsync 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 memp_fsync 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_mp_mmapsize.html">DBENV->set_mp_mmapsize</a>,
<a href="../api_c/memp_fclose.html">memp_fclose</a>,
<a href="../api_c/memp_fget.html">memp_fget</a>,
<a href="../api_c/memp_fopen.html">memp_fopen</a>,
<a href="../api_c/memp_fput.html">memp_fput</a>,
<a href="../api_c/memp_fset.html">memp_fset</a>,
<a href="../api_c/memp_fsync.html">memp_fsync</a>,
<a href="../api_c/memp_register.html">memp_register</a>,
<a href="../api_c/memp_stat.html">memp_stat</a>,
<a href="../api_c/memp_sync.html">memp_sync</a>
and
<a href="../api_c/memp_trickle.html">memp_trickle</a>.
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