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<!--$Id: lock_id.so,v 10.33 2004/08/13 03:38:57 bostic Exp $-->
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<head>
<title>Berkeley DB: DB_ENV->lock_id</title>
<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
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<h3>DB_ENV->lock_id</h3>
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<tt>
<h3><pre>
#include <db.h>
<p>
int
DB_ENV->lock_id(DB_ENV *env, u_int32_t *idp);
</pre></h3>
<hr size=1 noshade>
<h3>Description: DB_ENV->lock_id</h3>
<p>The DB_ENV->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_c/lock_id_free.html">DB_ENV->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 DB_ENV->lock_id method
returns a non-zero error value on failure
and 0 on success.
</p>
<h3>Parameters</h3>
<dl compact>
<dt><b>idp</b><dd>The <b>idp</b> parameter references memory into which
the allocated locker ID is copied.
</dl>
<hr size=1 noshade>
<h3>Class</h3>
<a href="../api_c/env_class.html">DB_ENV</a>, <a href="../api_c/lock_class.html">DB_LOCK</a>
<h3>See Also</h3>
<a href="../api_c/lock_list.html">Locking Subsystem and Related Methods</a>
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