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<! "@(#)class.so 10.5 (Sleepycat) 10/2/98">
<!Copyright 1997, 1998 by Sleepycat Software, Inc. All rights reserved.>
<html>
<body bgcolor=white>
<head>
<title>Berkeley DB: DbLock</title>
<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btr
ee,hash,hashing,transaction,transactions,locking,logging,access method,access me
thods,java,C,C++">
</head>
<h1>DbLock</h1>
<hr size=1 noshade>
<tt>
<h3>
<pre>
import com.sleepycat.db.*;
<p>
public DbLock()
throws DbException;
<p>
public DbLock(DbLock that)
throws DbException;
<p>
public DbLock(int lockid);
throws DbException;
</pre>
</h3>
<h1>Description</h1>
<p>
The DbLock class is used in conjunction with the <a href="../../api_java/DbLockTab/class.html">DbLockTab</a>
class to provide general-purpose locking.
While designed to work with the other Db classes, these classes are also
useful for more general locking purposes.
Locks can be shared between processes.
In most cases, when multiple threads or processes are using locking,
the deadlock detector, <a href="../../utility/db_deadlock.html">db_deadlock</a> should be run.
<p>
<h1>Class</h1>
DbLock
<p>
<h1>See Also</h1>
<a href="../../api_java/DbLock/put.html">DbLock.put</a>
</tt>
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