this.unit = unit;
    }

    @Override
    public void run() {
      startTime = System.nanoTime();
      try {
        future.get(timeout, unit);
      } catch (Exception e) {
        // nothing
        exception = e;
      } finally {
        timeSpentBlocked = System.nanoTime() - startTime;
      }
    }

    void awaitWaiting() {
      while (!isBlocked()) {

// is reached. Returns true if the finalizer queue was emptied.
// This is used by the runtime and sync tests.
func blockUntilEmptyFinalizerQueue(timeout int64) bool {
	start := nanotime()
	for nanotime()-start < timeout {
		lock(&finlock)
		// We know the queue has been drained when both finq is nil
		// and the finalizer g has stopped executing.
		empty := finq == nil

	s.sleepRatio = startingScavSleepRatio

	// Install real functions if stubs aren't present.
	if s.scavenge == nil {
		s.scavenge = func(n uintptr) (uintptr, int64) {
			start := nanotime()
			r := mheap_.pages.scavenge(n, nil, false)
			end := nanotime()
			if start >= end {
				return r, 0
			}
			scavenge.backgroundTime.Add(end - start)
			return r, end - start
		}
	}
	if s.shouldStop == nil {

var Xadduintptr = atomic.Xadduintptr

var ReadRandomFailed = &readRandomFailed

var Fastlog2 = fastlog2

var Atoi = atoi
var Atoi32 = atoi32
var ParseByteCount = parseByteCount

var Nanotime = nanotime
var NetpollBreak = netpollBreak
var Usleep = usleep

var PhysPageSize = physPageSize
var PhysHugePageSize = physHugePageSize

var NetpollGenericInit = netpollGenericInit

var Memmove = memmove

      // the extra memory consumption and indirection are more
      // expensive than the extra volatile reads.
      long nanos = expirationNanos;
      long now = System.nanoTime();
      if (nanos == 0 || now - nanos >= 0) {
        synchronized (this) {
          if (nanos == expirationNanos) { // recheck for lost race
            T t = delegate.get();
            value = t;

    Object localValue = value;
    if (localValue != null & !(localValue instanceof SetFuture)) {
      return getDoneValue(localValue);
    }
    // we delay calling nanoTime until we know we will need to either park or spin
    final long endNanos = remainingNanos > 0 ? System.nanoTime() + remainingNanos : 0;
    long_wait_loop:
    if (remainingNanos >= SPIN_THRESHOLD_NANOS) {
      Waiter oldHead = waiters;

    Object localValue = value;
    if (localValue != null & !(localValue instanceof SetFuture)) {
      return getDoneValue(localValue);
    }
    // we delay calling nanoTime until we know we will need to either park or spin
    final long endNanos = remainingNanos > 0 ? System.nanoTime() + remainingNanos : 0;
    long_wait_loop:
    if (remainingNanos >= SPIN_THRESHOLD_NANOS) {
      Waiter oldHead = waiters;

  private val cleanupQueue: TaskQueue = taskRunner.newQueue()
  private val cleanupTask =
    object : Task("$okHttpName ConnectionPool connection closer") {
      override fun runOnce(): Long = closeConnections(System.nanoTime())
    }

  private fun AddressState.scheduleOpener() {
    queue.schedule(
      object : Task("$okHttpName ConnectionPool connection opener") {

		}
	}
}

func TestTimePprof(t *testing.T) {
	// This test is unreliable on any system in which nanotime
	// calls into libc.
	switch runtime.GOOS {
	case "aix", "darwin", "illumos", "openbsd", "solaris":
		t.Skipf("skipping on %s because nanotime calls libc", runtime.GOOS)
	}

	// Pass GOTRACEBACK for issue #41120 to try to get more
	// information on timeout.

    val index = calls.indexOfFirst { it.get() == this@RealCall }
    check(index != -1)

    calls.removeAt(index)
    this.connection = null

    if (calls.isEmpty()) {
      connection.idleAtNs = System.nanoTime()
      if (connectionPool.connectionBecameIdle(connection)) {
        return connection.socket()
      }
    }

    return null
  }

  private fun <E : IOException?> timeoutExit(cause: E): E {