/*
* Created on Jun 4, 2008
* Created by Paul Gardner
*
* Copyright 2008 Vuze, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License only.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
package org.gudy.azureus2.core3.util;
import org.gudy.azureus2.core3.security.SESecurityManager;
public class
TimeLimitedTask
{
private String name;
private int max_millis;
private int priority;
private task t;
public
TimeLimitedTask(
String _name,
int _max_millis,
int _priority,
task _t )
{
name = _name;
max_millis = _max_millis;
priority = _priority;
t = _t;
}
public Object
run()
throws Throwable
{
final Object[] result = { null };
final AESemaphore sem = new AESemaphore( name );
final Thread thread =
new Thread( name )
{
public void
run()
{
try{
result[0] = t.run();
}catch( Throwable e ){
result[0] = e;
}finally{
t = null;
sem.releaseForever();
}
}
};
DelayedEvent ev =
new DelayedEvent(
name,
max_millis,
new AERunnable()
{
public void
runSupport()
{
if ( !sem.isReleasedForever()){
SESecurityManager.stopThread( thread );
}
}
});
thread.setPriority( priority );
thread.setDaemon( true );
thread.start();
sem.reserve();
ev.cancel();
if ( result[0] instanceof Throwable ){
throw((Throwable)result[0] );
}
return( result[0] );
}
public interface
task
{
public Object
run()
throws Exception;
}
}