/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.tomcat.util.threads;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
/**
* A Thread implementation that records the time at which it was created.
*
*/
public class TaskThread
extends Thread {
private static final Log log = LogFactory.getLog(TaskThread.
class);
private final long creationTime;
public TaskThread(ThreadGroup group, Runnable target, String name) {
super(group,
new WrappingRunnable(target), name);
this.creationTime = System.currentTimeMillis();
}
public TaskThread(ThreadGroup group, Runnable target, String name,
long stackSize) {
super(group,
new WrappingRunnable(target), name, stackSize);
this.creationTime = System.currentTimeMillis();
}
/**
* @return the time (in ms) at which this thread was created
*/
public final long getCreationTime() {
return creationTime;
}
/**
* Wraps a {@link Runnable} to swallow any {@link StopPooledThreadException}
* instead of letting it go and potentially trigger a break in a debugger.
*/
private static class WrappingRunnable
implements Runnable {
private Runnable wrappedRunnable;
WrappingRunnable(Runnable wrappedRunnable) {
this.wrappedRunnable = wrappedRunnable;
}
@Override
public void run() {
try {
wrappedRunnable.run();
}
catch(StopPooledThreadException exc) {
//expected : we just swallow the exception to avoid disturbing
//debuggers like eclipse's
log.debug(
"Thread exiting on purpose", exc);
}
}
}
}
