com.sun.enterprise.v3.services.impl.monitor.stats.ThreadPoolStatsProviderGlobal Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-micro Show documentation
Show all versions of payara-micro Show documentation
Micro Distribution of the Payara Project
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
// Portions Copyright [2016] [Payara Foundation and/or its affiliates]
package com.sun.enterprise.v3.services.impl.monitor.stats;
import java.util.Set;
import org.glassfish.external.probe.provider.annotations.ProbeListener;
import org.glassfish.external.probe.provider.annotations.ProbeParam;
import org.glassfish.external.statistics.CountStatistic;
import org.glassfish.external.statistics.annotations.Reset;
import org.glassfish.gmbal.AMXMetadata;
import org.glassfish.gmbal.Description;
import org.glassfish.gmbal.ManagedAttribute;
import org.glassfish.gmbal.ManagedObject;
/**
* Server wide Thread Pool statistics
*
* @author Amy Roh
*/
@AMXMetadata(type = "thread-pool-mon", group = "monitoring")
@ManagedObject
@Description("Thread Pool Statistics")
public class ThreadPoolStatsProviderGlobal extends ThreadPoolStatsProvider {
public ThreadPoolStatsProviderGlobal(String name) {
super(name);
}
@ManagedAttribute(id = "currentthreadcount")
@Description("Provides the number of request processing threads currently in the listener thread pool")
@Override
public CountStatistic getCurrentThreadCount() {
countThreadsInThreadPools();
return currentThreadCount;
}
@ProbeListener("glassfish:kernel:thread-pool:setMaxThreadsEvent")
@Override
public void setMaxThreadsEvent(
@ProbeParam("monitoringId") String monitoringId,
@ProbeParam("maxNumberOfThreads") int maxNumberOfThreads) {
maxThreadsCount.setCount(maxNumberOfThreads);
}
@ProbeListener("glassfish:kernel:thread-pool:setCoreThreadsEvent")
@Override
public void setCoreThreadsEvent(
@ProbeParam("monitoringId") String monitoringId,
@ProbeParam("coreNumberOfThreads") int coreNumberOfThreads) {
coreThreadsCount.setCount(coreNumberOfThreads);
}
@ProbeListener("glassfish:kernel:thread-pool:threadDispatchedFromPoolEvent")
@Override
public void threadDispatchedFromPoolEvent(
@ProbeParam("monitoringId") String monitoringId,
@ProbeParam("threadId") long threadId) {
currentThreadsBusy.increment();
}
@ProbeListener("glassfish:kernel:thread-pool:threadReturnedToPoolEvent")
@Override
public void threadReturnedToPoolEvent(
@ProbeParam("monitoringId") String monitoringId,
@ProbeParam("threadId") long threadId) {
totalExecutedTasksCount.increment();
// Stop it from decrementing to negative values
if (currentThreadsBusy.getCount() > 0) {
currentThreadsBusy.decrement();
}
}
/**
* Counts the threads in all thread pools by querying the JVM. Also
* counts the number of threads that are running.
*/
private void countThreadsInThreadPools() {
// Set to 0 as we want to reset them
currentThreadCount.setCount(0);
// Get all the threads currently in the JVM
Set threads = Thread.getAllStackTraces().keySet();
for (Thread thread : threads) {
String threadName = thread.getName();
for (String threadPoolName : threadPoolNames) {
if (thread.isAlive() && threadName.contains(threadPoolName + "(")) {
currentThreadCount.increment();
break;
}
}
}
}
public void subtractBusyThreads(long busyThreads) {
long busyThreadsCount = currentThreadsBusy.getCount() - busyThreads;
if (busyThreadsCount > 0) {
currentThreadsBusy.setCount(currentThreadsBusy.getCount() - busyThreads);
} else {
currentThreadsBusy.setCount(0);
}
}
@Reset
@Override
public void reset() {
// Do nothing
}
}