ij.util.ThreadUtil Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of ij

ImageJ is an open source Java image processing program inspired by NIH Image for the Macintosh.

There is a newer version: 1.54p

package ij.util;

public class ThreadUtil {
	
	/** Start all given threads and wait on each of them until all are done.
	 * From Stephan Preibisch's Multithreading.java class. See:
	 * http://repo.or.cz/w/trakem2.git?a=blob;f=mpi/fruitfly/general/MultiThreading.java;hb=HEAD
	 * @param threads 
	 */
	public static void startAndJoin(Thread[] threads) {
		for (int ithread = 0; ithread < threads.length; ++ithread) {
			threads[ithread].setPriority(Thread.NORM_PRIORITY);
			threads[ithread].start();
		}

		try {
			for (int ithread = 0; ithread < threads.length; ++ithread) {
				threads[ithread].join();
			}
		} catch (InterruptedException ie) {
			throw new RuntimeException(ie);
		}
	}

	public static Thread[] createThreadArray(int nb) {
		if (nb == 0) {
			nb = getNbCpus();
		}
		Thread[] threads = new Thread[nb];

		return threads;
	}

	public static Thread[] createThreadArray() {
		return createThreadArray(0);
	}

	public static int getNbCpus() {
		return Runtime.getRuntime().availableProcessors();
	}

}