/*
* Created on 11-Jul-2004
* Created by Paul Gardner
* Copyright (C) 2004, 2005, 2006 Aelitis, 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; either version 2
* of the License, or (at your option) any later version.
* 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.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package org.gudy.azureus2.core3.util;
/**
* @author parg
*
*/
public abstract class
ThreadPoolTask
extends AERunnable
{
static final int RELEASE_AUTO = 0x00;
static final int RELEASE_MANUAL = 0x01;
static final int RELEASE_MANUAL_ALLOWED = 0x02;
private int manualRelease;
protected ThreadPool.threadPoolWorker worker;
public void
setTaskState(
String state )
{
worker.setState( state );
}
public String
getTaskState()
{
return( worker == null ? "" : worker.getState());
}
public String
getName()
{
return( null );
}
public abstract void
interruptTask();
public void
taskStarted()
{
}
public void
taskCompleted()
{
}
/**
* only invoke this method after the first run of the threadpooltask as it is only meant to join
* on a task when it has child tasks and thus is running in manual release mode
*/
synchronized final void join()
{
while(manualRelease != RELEASE_AUTO)
{
try
{
wait();
} catch (Exception e)
{
Debug.printStackTrace(e);
}
}
}
synchronized final void
setManualRelease()
{
manualRelease = ThreadPoolTask.RELEASE_MANUAL;
}
synchronized final boolean
canManualRelease()
{
return( manualRelease == ThreadPoolTask.RELEASE_MANUAL_ALLOWED );
}
/**
* only invoke this method after the first run of the threadpooltask as it is only meant to
* update the state of a task when it has child tasks and thus is running in manual release mode
*/
synchronized final boolean isAutoReleaseAndAllowManual()
{
if(manualRelease == RELEASE_MANUAL)
manualRelease = RELEASE_MANUAL_ALLOWED;
return manualRelease == RELEASE_AUTO;
}
public final synchronized void releaseToPool()
{
// releasing before the initial run finished, so just let the runner do the cleanup
if(manualRelease == RELEASE_MANUAL)
manualRelease = RELEASE_AUTO;
else if(manualRelease == RELEASE_MANUAL_ALLOWED)
{
taskCompleted();
worker.getOwner().releaseManual(this);
manualRelease = RELEASE_AUTO;
} else if(manualRelease == RELEASE_AUTO)
Debug.out("this should not happen");
notifyAll();
}
}