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view src/goodjava/lucene/logging/SemaphoreLock.java @ 1587:fa1a9aceac3e
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author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Fri, 12 Mar 2021 23:22:53 -0700 |
parents | 634f6765830e |
children |
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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); } }