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//========================================================================
//$$Id: ThreadPoolExecutorAdapter.java,v 1.3 2007/11/02 12:39:41 ludovic_orban Exp $$
//
//------------------------------------------------------------------------
//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 com.google.util.threads;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import org.eclipse.jetty.util.component.LifeCycle;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.thread.ThreadPool;
/**
* Jetty {@link ThreadPool} that bridges requests to a {@link ThreadPoolExecutor}.
*/
public class ThreadPoolExecutorAdapter implements ThreadPool, LifeCycle {
private ThreadPoolExecutor executor;
public ThreadPoolExecutorAdapter(ThreadPoolExecutor executor) {
this.executor = executor;
}
@Override
public void execute(Runnable job) {
try {
executor.execute(job);
} catch (RejectedExecutionException e) {
Log.getLog().warn(e);
}
}
@Override
public int getIdleThreads() {
return executor.getPoolSize() - executor.getActiveCount();
}
@Override
public int getThreads() {
return executor.getPoolSize();
}
@Override
public boolean isLowOnThreads() {
return executor.getActiveCount() >= executor.getMaximumPoolSize();
}
@Override
public void join() throws InterruptedException {
executor.awaitTermination(Long.MAX_VALUE, TimeUnit.MILLISECONDS);
}
@Override
public boolean isFailed() {
return false;
}
@Override
public boolean isRunning() {
return !executor.isTerminated() && !executor.isTerminating();
}
@Override
public boolean isStarted() {
return !executor.isTerminated() && !executor.isTerminating();
}
@Override
public boolean isStarting() {
return false;
}
@Override
public boolean isStopped() {
return executor.isTerminated();
}
@Override
public boolean isStopping() {
return executor.isTerminating();
}
@Override
public void start() throws Exception {
if (executor.isTerminated() || executor.isTerminating()
|| executor.isShutdown()) {
throw new IllegalStateException("Cannot restart");
}
}
@Override
public void stop() throws Exception {
executor.shutdown();
if (!executor.awaitTermination(60, TimeUnit.SECONDS)) {
executor.shutdownNow();
}
}
@Override
public void addLifeCycleListener(Listener listener) {
System.err.println("we should implement this!");
}
@Override
public void removeLifeCycleListener(Listener listener) {
System.err.println("we should implement this!");
}
}
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