/*
* JBoss, Home of Professional Open Source
* Copyright 2015, Red Hat Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.weld.services.bootstrap;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import org.jboss.as.server.Services;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.jboss.threads.JBossThreadFactory;
import org.jboss.weld.executor.AbstractExecutorServices;
import org.jboss.weld.manager.api.ExecutorServices;
import org.wildfly.security.manager.WildFlySecurityManager;
/**
* Weld's ExecutorServices implementation. The executor is shared across all CDI-enabled deployments and used primarily for parallel Weld bootstrap.
*
* @author Jozef Hartinger
*
*/
public class WeldExecutorServices extends AbstractExecutorServices implements Service<ExecutorServices> {
public static final int DEFAULT_BOUND = Runtime.getRuntime().availableProcessors() + 1;
public static final ServiceName SERVICE_NAME = Services.JBOSS_AS.append("weld", "executor");
private static final String THREAD_NAME_PATTERN = "Weld Thread Pool -- %t";
private final int bound;
private ExecutorService executor;
public WeldExecutorServices() {
this(DEFAULT_BOUND);
}
public WeldExecutorServices(int bound) {
this.bound = bound;
}
@Override
public void start(StartContext context) throws StartException {
final ThreadGroup threadGroup = new ThreadGroup("Weld ThreadGroup");
final ThreadFactory factory = new JBossThreadFactory(threadGroup, Boolean.FALSE, null, THREAD_NAME_PATTERN, null, null);
// set TCCL to null for new threads to make sure no deployment classloader leaks through this executor's TCCL
// Weld does not mind having null TCCL in this executor
this.executor = Executors.newFixedThreadPool(bound, runnable -> {
Thread thread = factory.newThread(runnable);
if (WildFlySecurityManager.isChecking()) {
AccessController.doPrivileged(new PrivilegedAction<Void>() {
public Void run() {
thread.setContextClassLoader(null);
return null;
}
});
} else {
thread.setContextClassLoader(null);
}
return thread;
}
);
}
@Override
public void stop(StopContext context) {
if (executor != null) {
context.asynchronous();
new Thread(() -> {
super.cleanup();
executor = null;
context.complete();
}).start();
}
}
@Override
protected synchronized int getThreadPoolSize() {
return bound;
}
public synchronized ExecutorServices getValue() throws IllegalStateException, IllegalArgumentException {
return this;
}
@Override
public synchronized ExecutorService getTaskExecutor() {
return executor;
}
@Override
public void cleanup() {
// noop on undeploy - the executor is a service shared across multiple deployments
}
}