/**
*
* Copyright 2003-2004 The Apache Software Foundation
*
* 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.apache.geronimo.pool;
import EDU.oswego.cs.dl.util.concurrent.Executor;
import EDU.oswego.cs.dl.util.concurrent.PooledExecutor;
import EDU.oswego.cs.dl.util.concurrent.ThreadFactory;
import EDU.oswego.cs.dl.util.concurrent.LinkedQueue;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.geronimo.gbean.GBeanInfo;
import org.apache.geronimo.gbean.GBeanInfoFactory;
import org.apache.geronimo.gbean.GBeanLifecycle;
import org.apache.geronimo.gbean.WaitingException;
/**
* @version $Revision: 1.6 $ $Date: 2004/07/18 21:53:03 $
*/
public class ThreadPool implements Executor, GBeanLifecycle {
static private final Log log = LogFactory.getLog(ThreadPool.class);
private PooledExecutor executor;
private long keepAliveTime;
private int poolSize;
private String poolName;
private int nextWorkerID = 0;
public long getKeepAliveTime() {
return keepAliveTime;
}
public void setKeepAliveTime(long keepAliveTime) {
this.keepAliveTime = keepAliveTime;
}
public int getPoolSize() {
return poolSize;
}
public void setPoolSize(int poolSize) {
this.poolSize = poolSize;
}
public String getPoolName() {
return poolName;
}
public void execute(Runnable command) throws InterruptedException {
executor.execute(command);
}
public void setPoolName(String poolName) {
this.poolName = poolName;
}
private int getNextWorkerID() {
return nextWorkerID++;
}
public void doStart() throws WaitingException, Exception {
PooledExecutor p = new PooledExecutor(new LinkedQueue(), poolSize);
p.setKeepAliveTime(keepAliveTime);
p.setMinimumPoolSize(poolSize);
p.setThreadFactory(new ThreadFactory() {
public Thread newThread(Runnable arg0) {
return new Thread(arg0, poolName + " " + getNextWorkerID());
}
});
executor = p;
log.info("Thread pool " + poolName + " started");
}
public void doStop() throws WaitingException, Exception {
executor.shutdownNow();
log.info("Thread pool " + poolName + " stopped");
}
public void doFail() {
try {
doStop();
} catch (Exception e) {
log.error("Failed to shutdown", e);
}
}
public static final GBeanInfo GBEAN_INFO;
static {
GBeanInfoFactory infoFactory = new GBeanInfoFactory(ThreadPool.class);
infoFactory.addAttribute("keepAliveTime", long.class, true);
infoFactory.addAttribute("poolSize", int.class, true);
infoFactory.addAttribute("poolName", String.class, true);
infoFactory.addInterface(Executor.class);
GBEAN_INFO = infoFactory.getBeanInfo();
}
public static GBeanInfo getGBeanInfo() {
return GBEAN_INFO;
}
}