com.ajjpj.afoundation.concurrent.AThreadFactory Maven / Gradle / Ivy
package com.ajjpj.afoundation.concurrent;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;
/**
* This class is a customizable implementation of the ThreadFactory interface from java.util.concurrent. It can specify whether threads
* should be created as daemon or not, and it can specify a naming scheme.
*
* @author arno
*/
public class AThreadFactory implements ThreadFactory {
private static final AtomicInteger poolNumber = new AtomicInteger (1);
private final AtomicInteger threadNumber = new AtomicInteger (1);
private final String namePrefix;
private final boolean isDaemon;
/**
* Creates a ThreadFactory with a naming scheme consisting of a constant prefix followed by two numbers, the first uniquely identifying this thread factory
* instance and the second uniquely identifying the thread created within the tread factory.
* Thread names are globally unique. If in doubt, use this factory method.
*
* @param namePrefix the prefix used for all thread names, followed by running numbers
* @param isDaemon the flag specifying whether threads are created as daemon or not. Daemon threads are 'background' threads in the sense that they do not prevent JVM termination.
*/
public static AThreadFactory createWithRunningPoolNumber (String namePrefix, boolean isDaemon) {
return new AThreadFactory (namePrefix + "-" + poolNumber.getAndIncrement () + "-", isDaemon);
}
/**
* Creates a ThreadFactory with a naming scheme consisting of a constant prefix followed by one number. The number is a counter inside the newly created
* ThreadFactory instance, so names are unique per instance but not globally.
* Use this factory method if the prefix is used only for one thread factory.
*
* @param namePrefix the prefix used for all thread names, followed by a running number
* @param isDaemon the flag specifying whether threads are created as daemon or not. Daemon threads are 'background' threads in the sense that they do not prevent JVM termination.
*/
public static AThreadFactory create (String namePrefix, boolean isDaemon) {
return new AThreadFactory (namePrefix + "-", isDaemon);
}
private AThreadFactory (String namePrefix, boolean isDaemon) {
this.namePrefix = namePrefix;
this.isDaemon = isDaemon;
}
@Override public Thread newThread (Runnable r) {
Thread t = new Thread (r, namePrefix + threadNumber.getAndIncrement());
if (t.isDaemon () != isDaemon) {
t.setDaemon (isDaemon);
}
return t;
}
}