<!--$Id: lock_id.so,v 10.33 2004/08/13 03:38:57 bostic Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DbEnv::lock_id</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> <b>DbEnv::lock_id</b> </td> <td align=right> <a href="../api_cxx/api_core.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> <b><pre> #include <db_cxx.h> <p> int DbEnv::lock_id(u_int32_t *idp); </pre></b> <hr size=1 noshade> <b>Description: DbEnv::lock_id</b> <p>The DbEnv::lock_id method copies a locker ID, which is guaranteed to be unique in the specified lock table, into the memory location to which <b>idp</b> refers.</p> <p>The <a href="../api_cxx/lock_id_free.html">DbEnv::lock_id_free</a> method should be called to return the locker ID to the Berkeley DB library when it is no longer needed.</p> <p>The DbEnv::lock_id 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> <b>Parameters</b> <br> <b>idp</b><ul compact><li>The <b>idp</b> parameter references memory into which the allocated locker ID is copied.</ul> <br> <hr size=1 noshade> <br><b>Class</b> <a href="../api_cxx/env_class.html">DbEnv</a>, <a href="../api_cxx/lock_class.html">DbLock</a> <br><b>See Also</b> <a href="../api_cxx/lock_list.html">Locking Subsystem and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../api_cxx/api_core.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>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> </body> </html>