package org.eclipse.jetty.http.spi;
//========================================================================
//Copyright (c) 2004-2009 Mort Bay Consulting Pty. Ltd.
//------------------------------------------------------------------------
//All rights reserved. This program and the accompanying materials
//are made available under the terms of the Eclipse Public License v1.0
//and Apache License v2.0 which accompanies this distribution.
//The Eclipse Public License is available at
//http://www.eclipse.org/legal/epl-v10.html
//The Apache License v2.0 is available at
//http://www.opensource.org/licenses/apache2.0.php
//You may elect to redistribute this code under either of these licenses.
//========================================================================
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import org.eclipse.jetty.util.component.AbstractLifeCycle;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.thread.ThreadPool;
/**
* Jetty {@link ThreadPool} that bridges requests to a {@link ThreadPoolExecutor}.
*/
public class ThreadPoolExecutorAdapter extends AbstractLifeCycle implements ThreadPool
{
private static final Logger LOG = Log.getLogger(ThreadPoolExecutorAdapter.class);
private ThreadPoolExecutor executor;
public ThreadPoolExecutorAdapter(ThreadPoolExecutor executor)
{
this.executor = executor;
}
public boolean dispatch(Runnable job)
{
try
{
executor.execute(job);
return true;
}
catch(RejectedExecutionException e)
{
LOG.warn(e);
return false;
}
}
public int getIdleThreads()
{
return executor.getPoolSize()-executor.getActiveCount();
}
public int getThreads()
{
return executor.getPoolSize();
}
public boolean isLowOnThreads()
{
return executor.getActiveCount()>=executor.getMaximumPoolSize();
}
public void join() throws InterruptedException
{
executor.awaitTermination(Long.MAX_VALUE, TimeUnit.MILLISECONDS);
}
public boolean isFailed()
{
return false;
}
public boolean isRunning()
{
return !executor.isTerminated() && !executor.isTerminating();
}
public boolean isStarted()
{
return !executor.isTerminated() && !executor.isTerminating();
}
public boolean isStarting()
{
return false;
}
public boolean isStopped()
{
return executor.isTerminated();
}
public boolean isStopping()
{
return executor.isTerminating();
}
protected void doStart() throws Exception
{
if (executor.isTerminated() || executor.isTerminating() || executor.isShutdown())
throw new IllegalStateException("Cannot restart");
}
protected void doStop() throws Exception
{
executor.shutdown();
if (!executor.awaitTermination(60, TimeUnit.SECONDS))
executor.shutdownNow();
}
}