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ManagedExecutorServiceImpl.java
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ManagedExecutorServiceImpl.java
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/*
* Copyright (c) 2023, 2024 Contributors to the Eclipse Foundation.
* Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.enterprise.concurrent;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.TimeUnit;
import jakarta.enterprise.concurrent.ManagedExecutorService;
import org.glassfish.enterprise.concurrent.internal.ManagedFutureTask;
import org.glassfish.enterprise.concurrent.internal.ManagedThreadPoolExecutor;
/**
* Implementation of ManagedExecutorService interface. See {@code AbstractManagedExecutorService}.
*/
public class ManagedExecutorServiceImpl extends AbstractPlatformThreadExecutorService {
protected final ManagedThreadPoolExecutor threadPoolExecutor;
// The adapter to be returned to the caller needs to have all the lifecycle
// methods disabled
protected final ManagedExecutorServiceAdapter adapter;
public ManagedExecutorServiceImpl(String name,
ManagedThreadFactoryImpl managedThreadFactory,
long hungTaskThreshold,
boolean longRunningTasks,
int corePoolSize, int maxPoolSize, long keepAliveTime,
TimeUnit keepAliveTimeUnit,
long threadLifeTime,
ContextServiceImpl contextService,
RejectPolicy rejectPolicy,
BlockingQueue<Runnable> queue) {
super(name, managedThreadFactory, hungTaskThreshold, longRunningTasks,
contextService,
contextService != null? contextService.getContextSetupProvider(): null,
rejectPolicy);
threadPoolExecutor = new ManagedThreadPoolExecutor(corePoolSize, maxPoolSize,
keepAliveTime, keepAliveTimeUnit, queue,
this.managedThreadFactory);
threadPoolExecutor.setThreadLifeTime(threadLifeTime);
adapter = new ManagedExecutorServiceAdapter(this);
}
public ManagedExecutorServiceImpl(String name,
ManagedThreadFactoryImpl managedThreadFactory,
long hungTaskThreshold,
boolean longRunningTasks,
int corePoolSize, int maxPoolSize, long keepAliveTime,
TimeUnit keepAliveTimeUnit,
long threadLifeTime,
int queueCapacity,
ContextServiceImpl contextService,
RejectPolicy rejectPolicy) {
super(name, managedThreadFactory, hungTaskThreshold, longRunningTasks,
contextService,
contextService != null? contextService.getContextSetupProvider(): null,
rejectPolicy);
// Create a queue for ManagedThreadPoolExecutor based on the values
// of corePoolSize and queueCapacity.
// If queueCapacity is 0, or
// queueCapacity is Integer.MAX_VALUE and corePoolSize is 0,
// direct handoff queuing strategy will be used and a
// SynchronousQueue will be created.
// If queueCapacity is Integer.MAX_VALUE but corePoolSize is not 0,
// an unbounded queue will be used.
// For any other valid value for queueCapacity, a bounded queue
// wil be created.
if (queueCapacity < 0) {
throw new IllegalArgumentException();
}
BlockingQueue<Runnable> queue;
if (queueCapacity == Integer.MAX_VALUE) {
if (corePoolSize == 0) {
queue = new SynchronousQueue<>();
}
else {
queue = new LinkedBlockingQueue<>();
}
} else if (queueCapacity == 0) {
queue = new SynchronousQueue<>();
} else {
queue = new ArrayBlockingQueue<>(queueCapacity);
}
threadPoolExecutor = new ManagedThreadPoolExecutor(corePoolSize, maxPoolSize,
keepAliveTime, keepAliveTimeUnit, queue,
this.managedThreadFactory);
threadPoolExecutor.setThreadLifeTime(threadLifeTime);
adapter = new ManagedExecutorServiceAdapter(this);
}
@Override
public void execute(Runnable command) {
ManagedFutureTask<Void> task = getNewTaskFor(command, null);
task.submitted();
threadPoolExecutor.execute(task);
}
/**
* Returns an adapter for ManagedExecutorService instance which has its
* life cycle operations disabled.
*
* @return The ManagedExecutorService instance with life cycle operations
* disabled for use by application components.
**/
public ManagedExecutorServiceAdapter getAdapter() {
return adapter;
}
@Override
protected ExecutorService getThreadPoolExecutor() {
return threadPoolExecutor;
}
@Override
public ManagedExecutorService getExecutorForTaskListener() {
return adapter;
}
@Override
protected <V> ManagedFutureTask<V> getNewTaskFor(Runnable r, V result) {
return new ManagedFutureTask<>(this, r, result);
}
@Override
protected ManagedFutureTask getNewTaskFor(Callable callable) {
return new ManagedFutureTask(this, callable);
}
@Override
public long getTaskCount() {
return threadPoolExecutor.getTaskCount();
}
@Override
public long getCompletedTaskCount() {
return threadPoolExecutor.getCompletedTaskCount();
}
}