Jabit/core/src/main/java/ch/dissem/bitmessage/utils/ThreadFactoryBuilder.java

66 lines
1.9 KiB
Java

/*
* Copyright 2016 Christian Basler
*
* 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 ch.dissem.bitmessage.utils;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;
public class ThreadFactoryBuilder {
private final String namePrefix;
private int prio = Thread.NORM_PRIORITY;
private boolean daemon = false;
private ThreadFactoryBuilder(String pool) {
this.namePrefix = pool + "-thread-";
}
public static ThreadFactoryBuilder pool(String name) {
return new ThreadFactoryBuilder(name);
}
public ThreadFactoryBuilder lowPrio() {
prio = Thread.MIN_PRIORITY;
return this;
}
public ThreadFactoryBuilder daemon() {
daemon = true;
return this;
}
public ThreadFactory build() {
SecurityManager s = System.getSecurityManager();
final ThreadGroup group = (s != null) ? s.getThreadGroup() :
Thread.currentThread().getThreadGroup();
return new ThreadFactory() {
private final AtomicInteger threadNumber = new AtomicInteger(1);
@Override
public Thread newThread(Runnable r) {
Thread t = new Thread(group, r,
namePrefix + threadNumber.getAndIncrement(),
0);
t.setPriority(prio);
t.setDaemon(daemon);
return t;
}
};
}
}