long nanos = unit.toNanos(timeout);
    synchronized (lock) {
      while (true) {
        if (shutdown && runningTasks == 0) {
          return true;
        } else if (nanos <= 0) {
          return false;
        } else {
          long now = System.nanoTime();
          NANOSECONDS.timedWait(lock, nanos);
          nanos -= System.nanoTime() - now; // subtract the actual time we waited

    long nanos = unit.toNanos(timeout);
    synchronized (lock) {
      while (true) {
        if (shutdown && runningTasks == 0) {
          return true;
        } else if (nanos <= 0) {
          return false;
        } else {
          long now = System.nanoTime();
          NANOSECONDS.timedWait(lock, nanos);
          nanos -= System.nanoTime() - now; // subtract the actual time we waited

internal inline fun Lockable.notify() = (this as Object).notify()

internal inline fun Lockable.notifyAll() = (this as Object).notifyAll()

internal inline fun Lockable.awaitNanos(nanos: Long) {
  val ms = nanos / 1_000_000L
  val ns = nanos - (ms * 1_000_000L)
  if (ms > 0L || nanos > 0) {
    (this as Object).wait(ms, ns.toInt())
  }
}

internal inline fun Lockable.assertLockNotHeld() {
  if (assertionsEnabled && Thread.holdsLock(this)) {

    javaNetSocket.shutdownInput()
  }

  fun shutdownOutput() {
    javaNetSocket.shutdownOutput()
  }

  /** Sleeps [nanos], throwing if the socket is closed before that period has elapsed. */
  fun sleepWhileOpen(nanos: Long) {
    var ms = nanos / 1_000_000L
    val ns = nanos - (ms * 1_000_000L)

    while (ms > 100) {
      Thread.sleep(100)

 *
 * <p>This class is thread-safe.
 *
 * @author Jige Yu
 * @since 10.0
 */
@NullMarked
@GwtCompatible
public class FakeTicker extends Ticker {

  private final AtomicLong nanos = new AtomicLong();
  private volatile long autoIncrementStepNanos;

  /** Advances the ticker value by {@code time} in {@code timeUnit}. */
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration

 *
 * <p>This class is thread-safe.
 *
 * @author Jige Yu
 * @since 10.0
 */
@NullMarked
@GwtCompatible
public class FakeTicker extends Ticker {

  private final AtomicLong nanos = new AtomicLong();
  private volatile long autoIncrementStepNanos;

  /** Advances the ticker value by {@code time} in {@code timeUnit}. */
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration