com.hazelcast.util.executor.AbstractExecutorThreadFactory Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.util.executor;
import java.util.concurrent.ThreadFactory;
public abstract class AbstractExecutorThreadFactory implements ThreadFactory {
protected final ClassLoader classLoader;
protected final ThreadGroup threadGroup;
public AbstractExecutorThreadFactory(ThreadGroup threadGroup, ClassLoader classLoader) {
this.threadGroup = threadGroup;
this.classLoader = classLoader;
}
@Override
public final Thread newThread(Runnable r) {
final Thread t = createThread(r);
t.setContextClassLoader(classLoader);
// If context classloader of created thread is still null
if (t.getContextClassLoader() == null) {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
// If classloader of current thread is null (means that caller class is loaded by bootloader),
// at first try to use classloader of current class.
if (cl == null) {
cl = getClass().getClassLoader();
}
// If classloader is still null (this might not be possible), use system classloader as current classloader
if (cl == null) {
cl = ClassLoader.getSystemClassLoader();
}
t.setContextClassLoader(cl);
}
if (t.isDaemon()) {
t.setDaemon(false);
}
if (t.getPriority() != Thread.NORM_PRIORITY) {
t.setPriority(Thread.NORM_PRIORITY);
}
return t;
}
protected abstract Thread createThread(Runnable r);
}