<!--$Id: mutex_unlock.so,v 10.1 2005/07/20 16:34:02 bostic Exp $--> <!--Copyright (c) 1997,2007 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DbEnv::mutex_unlock</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> </head> <body bgcolor=white> <table width="100%"><tr valign=top> <td> <h3>DbEnv::mutex_unlock</h3> </td> <td align=right> <a href="../../db46-devel-4.6.21/api_cxx/api_core.html"><img src="../../db46-devel-4.6.21/images/api.gif" alt="API"></a> <a href="../../db46-devel-4.6.21/ref/toc.html"><img src="../../db46-devel-4.6.21/images/ref.gif" alt="Ref"></a></td> </tr></table> <hr size=1 noshade> <tt> <h3><pre> #include <db_cxx.h> <p> int DbEnv::mutex_unlock(db_mutex_t mutex); </pre></h3> <hr size=1 noshade> <h3>Description: DbEnv::mutex_unlock</h3> <p>The DbEnv::mutex_unlock method unlocks the mutex locked by <a href="../../db46-devel-4.6.21/api_cxx/mutex_lock.html">DbEnv::mutex_lock</a>.</p> <p>The DbEnv::mutex_unlock method may not be called before the <a href="../../db46-devel-4.6.21/api_cxx/env_open.html">DbEnv::open</a> method has been called.</p> <p>The DbEnv::mutex_unlock method either returns a non-zero error value or throws an exception that encapsulates a non-zero error value on failure, and returns 0 on success. </p> <h3>Parameters</h3> <dl compact> <dt><b>mutex</b><dd>The <b>mutex</b> parameter is a mutex previously locked by <a href="../../db46-devel-4.6.21/api_cxx/mutex_lock.html">DbEnv::mutex_lock</a>. </dl> <h3>Errors</h3> <p>The DbEnv::mutex_unlock method may fail and throw <a href="../../db46-devel-4.6.21/api_cxx/except_class.html">DbException</a>, encapsulating one of the following non-zero errors, or return one of the following non-zero errors:</p> <dl compact> <dt>EINVAL<dd>An invalid flag value or parameter was specified. </dl> <hr size=1 noshade> <h3>Class</h3> <a href="../../db46-devel-4.6.21/api_cxx/env_class.html">DbEnv</a> <h3>See Also</h3> <a href="../../db46-devel-4.6.21/api_cxx/env_list.html">Database Environments and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db46-devel-4.6.21/api_cxx/api_core.html"><img src="../../db46-devel-4.6.21/images/api.gif" alt="API"></a><a href="../../db46-devel-4.6.21/ref/toc.html"><img src="../../db46-devel-4.6.21/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1>Copyright (c) 1996,2007 Oracle. All rights reserved.</font> </body> </html>