view src/goodjava/lucene/logging/SemaphoreLock.java @ 1593:ea62c2316b2e

docs
author Franklin Schmidt <fschmidt@gmail.com>
date Sat, 20 Mar 2021 22:29:01 -0600
parents 634f6765830e
children
line wrap: on
line source

package goodjava.lucene.logging;

import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;


public final class SemaphoreLock {
	private final Semaphore semaphore = new Semaphore(1);

	public void unlock() {
		semaphore.release();
	}

	public boolean isLocked() {
		return semaphore.availablePermits() == 0;
	}

	public boolean tryLock(long time,TimeUnit unit) throws InterruptedException {
		return semaphore.tryAcquire(time,unit);
	}
}