private final Stopwatch stopwatch = new Stopwatch(ticker);

  public void testCreateStarted() {
    Stopwatch startedStopwatch = Stopwatch.createStarted();
    assertTrue(startedStopwatch.isRunning());
  }

  public void testCreateUnstarted() {
    Stopwatch unstartedStopwatch = Stopwatch.createUnstarted();
    assertFalse(unstartedStopwatch.isRunning());
    assertEquals(0, unstartedStopwatch.elapsed(NANOSECONDS));
  }

          .put(Predicate.class, Predicates.alwaysTrue())
          .put(Equivalence.class, Equivalence.equals())
          .put(Ticker.class, Ticker.systemTicker())
          .put(Stopwatch.class, Stopwatch.createUnstarted())
          // io types
          .put(InputStream.class, new ByteArrayInputStream(new byte[0]))
          .put(ByteArrayInputStream.class, new ByteArrayInputStream(new byte[0]))

          .put(Predicate.class, Predicates.alwaysTrue())
          .put(Equivalence.class, Equivalence.equals())
          .put(Ticker.class, Ticker.systemTicker())
          .put(Stopwatch.class, Stopwatch.createUnstarted())
          // io types
          .put(InputStream.class, new ByteArrayInputStream(new byte[0]))
          .put(ByteArrayInputStream.class, new ByteArrayInputStream(new byte[0]))

  // IncrementableCountDownLatch.await() tests

  // CountDownLatch.await() tests

  // Condition.await() tests
  public void testConditionAwaitTimeoutExceeded() {
    Stopwatch stopwatch = Stopwatch.createStarted();
    Condition condition = TestCondition.create();

    boolean signaledBeforeTimeout = awaitUninterruptibly(condition, 500, MILLISECONDS);

    assertFalse(signaledBeforeTimeout);

 * @author Kevin Bourrillion
 */
@NullUnmarked
public class StopwatchBenchmark {
  @Benchmark
  long stopwatch(int reps) {
    long total = 0;
    for (int i = 0; i < reps; i++) {
      Stopwatch s = Stopwatch.createStarted();
      // here is where you would do something
      total += s.elapsed(NANOSECONDS);
    }
    return total;
  }

  @Benchmark
  long manual(int reps) {
    long total = 0;

 * @author Kevin Bourrillion
 */
@NullUnmarked
public class StopwatchBenchmark {
  @Benchmark
  long stopwatch(int reps) {
    long total = 0;
    for (int i = 0; i < reps; i++) {
      Stopwatch s = Stopwatch.createStarted();
      // here is where you would do something
      total += s.elapsed(NANOSECONDS);
    }
    return total;
  }

  @Benchmark
  long manual(int reps) {
    long total = 0;

      // producing one, will ask for two
      Future<?> producerThread = threadPool.submit(producer);
      producer.beganProducing.await();

      // make sure we time out
      Stopwatch timer = Stopwatch.createStarted();

      int drained = drain(q, new ArrayList<>(), 2, 10, MILLISECONDS, interruptibly);
      assertThat(drained).isAtMost(1);

      assertThat(timer.elapsed(MILLISECONDS)).isAtLeast(10L);

    void tryStartTiming(Service service) {
      monitor.enter();
      try {
        Stopwatch stopwatch = startupTimers.get(service);
        if (stopwatch == null) {
          startupTimers.put(service, Stopwatch.createStarted());
        }
      } finally {
        monitor.leave();
      }
    }

    /**
     * Marks the {@link State} as ready to receive transitions. Returns true if no transitions have

      bloomFilter.put(getNonGoldenRandomKey());
    }
    bloomFilter.put(GOLDEN_PRESENT_KEY);

    int numThreads = 12;
    double safetyFalsePositiveRate = 0.1;
    Stopwatch stopwatch = Stopwatch.createStarted();

    Runnable task =
        new Runnable() {
          @Override
          public void run() {
            do {
              // We can't have a GOLDEN_NOT_PRESENT_KEY because false positives are

      bloomFilter.put(getNonGoldenRandomKey());
    }
    bloomFilter.put(GOLDEN_PRESENT_KEY);

    int numThreads = 12;
    double safetyFalsePositiveRate = 0.1;
    Stopwatch stopwatch = Stopwatch.createStarted();

    Runnable task =
        new Runnable() {
          @Override
          public void run() {
            do {
              // We can't have a GOLDEN_NOT_PRESENT_KEY because false positives are