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// ========================================================================
// $Id: LifeCycleThread.java,v 1.9 2005/08/13 00:01:28 gregwilkins Exp $
// Copyright 1999-2004 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================
package org.browsermob.proxy.jetty.util;
import org.apache.commons.logging.Log;
import org.browsermob.proxy.jetty.log.LogFactory;
import java.io.InterruptedIOException;
/* ------------------------------------------------------------ */
/** Base Thread class implementing LifeCycle.
*
* @version $Revision: 1.9 $
* @author Greg Wilkins (gregw)
*/
public abstract class LifeCycleThread implements LifeCycle, Runnable
{
private static Log log = LogFactory.getLog(LifeCycleThread.class);
private boolean _running;
private boolean _daemon ;
private Thread _thread;
/* ------------------------------------------------------------ */
public boolean isDaemon()
{
return _daemon;
}
/* ------------------------------------------------------------ */
public void setDaemon(boolean d)
{
_daemon = d;
}
/* ------------------------------------------------------------ */
public Thread getThread()
{
return _thread;
}
/* ------------------------------------------------------------ */
public boolean isStarted()
{
return _running;
}
/* ------------------------------------------------------------ */
public synchronized void start()
throws Exception
{
if (_running)
{
log.debug("Already started");
return;
}
_running=true;
if (_thread==null)
{
_thread=new Thread(this);
_thread.setDaemon(_daemon);
}
_thread.start();
}
/* ------------------------------------------------------------ */
/**
*/
public synchronized void stop()
throws InterruptedException
{
_running=false;
if (_thread!=null)
{
_thread.interrupt();
_thread.join();
}
}
/* ------------------------------------------------------------ */
/**
*/
public final void run()
{
try
{
while(_running)
{
try
{
loop();
}
catch(InterruptedException e)
{
LogSupport.ignore(log,e);
}
catch(InterruptedIOException e)
{
LogSupport.ignore(log,e);
}
catch(Exception e)
{
if (exception(e))
break;
}
catch(Error e)
{
if (error(e))
break;
}
}
}
finally
{
_running=false;
}
}
/* ------------------------------------------------------------ */
/** Handle exception from loop.
* @param e The exception
* @return True of the loop should continue;
*/
public boolean exception(Exception e)
{
log.warn(LogSupport.EXCEPTION,e);
return true;
}
/* ------------------------------------------------------------ */
/** Handle error from loop.
* @param e The exception
* @return True of the loop should continue;
*/
public boolean error(Error e)
{
log.warn(LogSupport.EXCEPTION,e);
return true;
}
/* ------------------------------------------------------------ */
/**
* @exception InterruptedException
* @exception InterruptedIOException
*/
public abstract void loop()
throws InterruptedException,
InterruptedIOException,
Exception;
}