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);
	}
}