openwfe.org.misc.MonitorMap Maven / Gradle / Ivy
/*
* Copyright (c) 2001-2006, John Mettraux, OpenWFE.org
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* . Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* . Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* . Neither the name of the "OpenWFE" nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $Id: MonitorMap.java 2713 2006-06-01 14:38:45Z jmettraux $
*/
//
// MonitorMap.java
//
// [email protected]
//
// generated with
// jtmpl 1.1.01 2004/05/19 ([email protected])
//
package openwfe.org.misc;
/**
* This class provides a map for monitors (synchronization tools).
*
* CVS Info :
*
$Author: jmettraux $
*
$Id: MonitorMap.java 2713 2006-06-01 14:38:45Z jmettraux $
*
* @author [email protected]
*/
public class MonitorMap
{
/*
private final static org.apache.log4j.Logger log = org.apache.log4j.Logger
.getLogger(MonitorMap.class.getName());
*/
//
// CONSTANTS & co
//
// FIELDS
private Cache map = null;
//
// CONSTRUCTORS
/**
* Builds a monitor map with a capacity of 100 references.
*/
public MonitorMap ()
{
super();
this.map = new Cache();
}
/**
* Builds a monitor map with a given capacity.
*/
public MonitorMap (final int cacheSize)
{
super();
this.map = new Cache(cacheSize);
}
//
// METHODS
/**
* Returns a monitor (to use with a 'synchronized' keyword) for a given
* identifier.
*/
public synchronized Object getMonitor (final Object identifier)
{
Object monitor = this.map.get(identifier);
if (monitor == null)
{
monitor = new Object();
this.map.put(identifier, monitor);
}
return monitor;
}
//
// STATIC METHODS
//
// INNER CLASSES
}