// loop.

    try {
      // Record exceptions so that if we fail to obtain any
      // result, we can throw the last exception we got.
      ExecutionException ee = null;
      long lastTime = timed ? System.nanoTime() : 0;
      Iterator<? extends Callable<T>> it = tasks.iterator();

      futures.add(submitAndAddQueueListener(executorService, it.next(), futureQueue));
      --ntasks;
      int active = 1;

      // 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 (lock) {
          if (nanos == expirationNanos) { // recheck for lost race
            T t = delegate.get();
            value = t;

    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 timeoutExit(cause: IOException?): IOException? {

        try {
            DisniMemoryRegion disniRegion = (DisniMemoryRegion) region;
            IbvSendWR sendWR = new IbvSendWR();
            sendWR.setWr_id(System.nanoTime());
            sendWR.setOpcode(IbvSendWR.IbvWrOpcode.IBV_WR_SEND.ordinal());
            sendWR.setSend_flags(IbvSendWR.IBV_SEND_SIGNALED);
            
            LinkedList<IbvSge> sgeList = new LinkedList<>();

		return errMalformedAuth
	}

	if err = validateStorageRequestToken(token); err != nil {
		return err
	}

	nanoTime, err := strconv.ParseInt(r.Header.Get("X-Minio-Time"), 10, 64)
	if err != nil {
		return errMalformedAuth
	}

	localTime := UTCNow()
	remoteTime := time.Unix(0, nanoTime)

	delta := remoteTime.Sub(localTime)
	if delta < 0 {
		delta *= -1
	}

	if delta > DefaultSkewTime {

    val startNanos = System.nanoTime()
    bodySource.use {
      assertFailsWith<IOException> {
        bodySource.readByte()
      }.also { expected ->
        // Timed out as expected.
        val elapsedNanos = System.nanoTime() - startNanos
        val elapsedMillis = TimeUnit.NANOSECONDS.toMillis(elapsedNanos)

    val call = client.newCall(Request(server.url("/")))
    val executeAtNanos = System.nanoTime()
    assertFailsWith<StreamResetException> {
      call.execute()
    }.also { expected ->
      assertThat(expected.message).isEqualTo(
        "stream was reset: PROTOCOL_ERROR",
      )
    }
    val elapsedUntilFailure = System.nanoTime() - executeAtNanos

  internal fun sendDegradedPingLater() {
    withLock {
      if (degradedPongsReceived < degradedPingsSent) return // Already awaiting a degraded pong.
      degradedPingsSent++
      degradedPongDeadlineNs = System.nanoTime() + DEGRADED_PONG_TIMEOUT_NS
    }
    writerQueue.execute("$connectionName ping") {
      writePing(false, DEGRADED_PING, 0)
    }
  }

  class Builder(

  long getRefreshNanos() {
    return (refreshNanos == UNSET_INT) ? DEFAULT_REFRESH_NANOS : refreshNanos;
  }

  /**
   * Specifies a nanosecond-precision time source for this cache. By default, {@link
   * System#nanoTime} is used.
   *
   * <p>The primary intent of this method is to facilitate testing of caches with a fake or mock
   * time source.
   *
   * @return this {@code CacheBuilder} instance (for chaining)

        .build(),
    )
    server.enqueue(
      MockResponse(body = "A"),
    )
    val startNanos = System.nanoTime()
    val connection1 = getResponse(newRequest("/"))
    val inputStream = connection1.body.byteStream()
    inputStream.close()
    val elapsedNanos = System.nanoTime() - startNanos
    val elapsedMillis = TimeUnit.NANOSECONDS.toMillis(elapsedNanos)