/*
* Copyright 2008-2009 LinkedIn, Inc
*
* 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 voldemort.client;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import voldemort.annotations.jmx.JmxGetter;
import voldemort.annotations.jmx.JmxManaged;
import voldemort.utils.DaemonThreadFactory;
/**
* A thread pool with a more convenient constructor and some jmx monitoring
*
*
*/
@JmxManaged(description = "A voldemort client thread pool")
public class ClientThreadPool extends ThreadPoolExecutor {
public ClientThreadPool(int maxThreads, long threadIdleMs, int maxQueuedRequests) {
super(maxThreads,
maxThreads,
threadIdleMs,
TimeUnit.MILLISECONDS,
new LinkedBlockingQueue<Runnable>(maxQueuedRequests),
new DaemonThreadFactory("voldemort-client-thread-"),
new ThreadPoolExecutor.CallerRunsPolicy());
}
@JmxGetter(name = "numberOfActiveThreads", description = "The number of active threads.")
public int getNumberOfActiveThreads() {
return this.getActiveCount();
}
@JmxGetter(name = "numberOfThreads", description = "The total number of threads, active and idle.")
public int getNumberOfThreads() {
return this.getPoolSize();
}
@JmxGetter(name = "queuedRequests", description = "Number of requests in the queue waiting to execute.")
public int getQueuedRequests() {
return this.getQueue().size();
}
}