<!--$Id: memp_fsync.so,v 10.22 2000/09/08 15:20:28 bostic Exp $--> <!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.--> <!--All rights reserved.--> <html> <head> <title>Berkeley DB: DbMpoolFile::sync</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++"> </head> <body bgcolor=white> <a name="2"><!--meow--></a> <table><tr valign=top> <td> <h1>DbMpoolFile::sync</h1> </td> <td width="1%"> <a href="../api_cxx/cxx_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a> </td></tr></table> <hr size=1 noshade> <tt> <h3><pre> #include <db_cxx.h> <p> int DbMpoolFile::sync(); </pre></h3> <h1>Description</h1> <p>The DbMpoolFile::sync method writes all pages associated with the <a href="../api_cxx/mempfile_class.html">DbMpoolFile</a>, that were marked as modified using <a href="../api_cxx/memp_fput.html">DbMpoolFile::put</a> or <a href="../api_cxx/memp_fset.html">DbMpoolFile::set</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) DbMpoolFile::sync will ignore them. <p>The DbMpoolFile::sync method either returns a non-zero error value or throws an exception that encapsulates 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 DbMpoolFile::sync was unable to write immediately. <h1>Errors</h1> <p>The DbMpoolFile::sync method may fail and throw an exception or return a non-zero error for errors specified for other Berkeley DB and C library or system methods. If a catastrophic error has occurred, the DbMpoolFile::sync method may fail and either return <a href="../ref/program/errorret.html#DB_RUNRECOVERY">DB_RUNRECOVERY</a> or throw an exception encapsulating <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. <h3>Classes</h3> <a href="../api_cxx/dbenv_class.html">DbEnv</a>, <a href="../api_cxx/mempfile_class.html">DbMpoolFile</a> <h1>See Also</h1> <a href="../api_cxx/env_set_mp_mmapsize.html">DbEnv::set_mp_mmapsize</a>, <a href="../api_cxx/memp_fclose.html">DbMpoolFile::close</a>, <a href="../api_cxx/memp_fget.html">DbMpoolFile::get</a>, <a href="../api_cxx/memp_fopen.html">DbMpoolFile::open</a>, <a href="../api_cxx/memp_fput.html">DbMpoolFile::put</a>, <a href="../api_cxx/memp_fset.html">DbMpoolFile::set</a>, <a href="../api_cxx/memp_fsync.html">DbMpoolFile::sync</a>, <a href="../api_cxx/memp_register.html">DbEnv::memp_register</a>, <a href="../api_cxx/memp_stat.html">DbEnv::memp_stat</a>, <a href="../api_cxx/memp_sync.html">DbEnv::memp_sync</a> and <a href="../api_cxx/memp_trickle.html">DbEnv::memp_trickle</a>. </tt> <table><tr><td><br></td><td width="1%"> <a href="../api_cxx/cxx_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font> </body> </html>