/*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
package lineage2.loginserver;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import lineage2.commons.threading.RunnableImpl;
/**
* @author Mobius
* @version $Revision: 1.0 $
*/
public class ThreadPoolManager
{
/**
* Field MAX_DELAY.
*/
private static final long MAX_DELAY = TimeUnit.NANOSECONDS.toMillis(Long.MAX_VALUE - System.nanoTime()) / 2;
/**
* Field _instance.
*/
private static final ThreadPoolManager _instance = new ThreadPoolManager();
/**
* Method getInstance.
* @return ThreadPoolManager
*/
public static final ThreadPoolManager getInstance()
{
return _instance;
}
/**
* Field scheduledExecutor.
*/
final ScheduledThreadPoolExecutor scheduledExecutor = new ScheduledThreadPoolExecutor(1);
/**
* Field executor.
*/
final ThreadPoolExecutor executor = new ThreadPoolExecutor(1, 1, 5L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
/**
* Constructor for ThreadPoolManager.
*/
private ThreadPoolManager()
{
scheduleAtFixedRate(new RunnableImpl()
{
@Override
public void runImpl()
{
executor.purge();
scheduledExecutor.purge();
}
}, 600000L, 600000L);
}
/**
* Method validate.
* @param delay long
* @return long
*/
private final long validate(long delay)
{
return Math.max(0, Math.min(MAX_DELAY, delay));
}
/**
* Method execute.
* @param r Runnable
*/
public void execute(Runnable r)
{
executor.execute(r);
}
/**
* Method schedule.
* @param r Runnable
* @param delay long
* @return ScheduledFuture<?>
*/
public ScheduledFuture<?> schedule(Runnable r, long delay)
{
return scheduledExecutor.schedule(r, validate(delay), TimeUnit.MILLISECONDS);
}
/**
* Method scheduleAtFixedRate.
* @param r Runnable
* @param initial long
* @param delay long
* @return ScheduledFuture<?>
*/
public ScheduledFuture<?> scheduleAtFixedRate(Runnable r, long initial, long delay)
{
return scheduledExecutor.scheduleAtFixedRate(r, validate(initial), validate(delay), TimeUnit.MILLISECONDS);
}
}