{12, "ENOMEM", "cannot allocate memory"},
	{13, "EACCES", "permission denied"},
	{14, "EFAULT", "bad address"},
	{15, "ENOTBLK", "block device required"},
	{16, "EBUSY", "device or resource busy"},
	{17, "EEXIST", "file exists"},
	{18, "EXDEV", "invalid cross-device link"},
	{19, "ENODEV", "no such device"},
	{20, "ENOTDIR", "not a directory"},
	{21, "EISDIR", "is a directory"},

      if (activeTask == null && futureTasks.isEmpty()) {
        return CountDownLatch(0)
      }

      // If there's an existing AwaitIdleTask, use it. This is necessary when the executor is
      // shutdown but still busy as we can't enqueue in that case.
      val existingTask = activeTask
      if (existingTask is AwaitIdleTask) {
        return existingTask.latch
      }
      for (futureTask in futureTasks) {

        when:
        manager.selectIdleClientsToStop(stopMostPreferredClient)

        then:
        1 * client3.stop()

        and:
        0 * client1.stop()
    }

    def "does not stop busy clients when releasing memory"() {
        def client1 = Mock(WorkerDaemonClient) { _ * getUses() >> 5 }
        def client2 = Mock(WorkerDaemonClient) { _ * getUses() >> 1 }

// of free CPUs that they contain. "higher than sockets in the memory hierarchy" means that NUMA nodes
// contain a bigger number of CPUs (free and busy) than sockets, or equivalently that each NUMA node
// contains more than one socket.
//
// If instead NUMA nodes are lower in the memory hierarchy than sockets, they are sorted as follows.

	{12, "ENOMEM", "cannot allocate memory"},
	{13, "EACCES", "permission denied"},
	{14, "EFAULT", "bad address"},
	{15, "ENOTBLK", "block device required"},
	{16, "EBUSY", "device or resource busy"},
	{17, "EEXIST", "file exists"},
	{18, "EXDEV", "invalid cross-device link"},
	{19, "ENODEV", "no such device"},
	{20, "ENOTDIR", "not a directory"},
	{21, "EISDIR", "is a directory"},

	{12, "ENOMEM", "cannot allocate memory"},
	{13, "EACCES", "permission denied"},
	{14, "EFAULT", "bad address"},
	{15, "ENOTBLK", "block device required"},
	{16, "EBUSY", "device or resource busy"},
	{17, "EEXIST", "file exists"},
	{18, "EXDEV", "invalid cross-device link"},
	{19, "ENODEV", "no such device"},
	{20, "ENOTDIR", "not a directory"},
	{21, "EISDIR", "is a directory"},

	{12, "ENOMEM", "cannot allocate memory"},
	{13, "EACCES", "permission denied"},
	{14, "EFAULT", "bad address"},
	{15, "ENOTBLK", "block device required"},
	{16, "EBUSY", "device or resource busy"},
	{17, "EEXIST", "file exists"},
	{18, "EXDEV", "invalid cross-device link"},
	{19, "ENODEV", "no such device"},
	{20, "ENOTDIR", "not a directory"},
	{21, "EISDIR", "is a directory"},

	// won't find any mount and won't return DetachDisk below.
	// Therefore implement our own retry mechanism here.
	// E.g. DetachDisk sometimes fails to flush a multipath device with "device is busy" when it was
	// just unmounted.
	// 2 minutes should be enough within 6 minute force detach timeout.
	var detachError error
	err = wait.PollImmediate(10*time.Second, 2*time.Minute, func() (bool, error) {

	{12, "ENOMEM", "cannot allocate memory"},
	{13, "EACCES", "permission denied"},
	{14, "EFAULT", "bad address"},
	{15, "ENOTBLK", "block device required"},
	{16, "EBUSY", "device or resource busy"},
	{17, "EEXIST", "file exists"},
	{18, "EXDEV", "invalid cross-device link"},
	{19, "ENODEV", "no such device"},
	{20, "ENOTDIR", "not a directory"},
	{21, "EISDIR", "is a directory"},

	{12, "ENOMEM", "cannot allocate memory"},
	{13, "EACCES", "permission denied"},
	{14, "EFAULT", "bad address"},
	{15, "ENOTBLK", "block device required"},
	{16, "EBUSY", "device or resource busy"},
	{17, "EEXIST", "file exists"},
	{18, "EXDEV", "invalid cross-device link"},
	{19, "ENODEV", "no such device"},
	{20, "ENOTDIR", "not a directory"},
	{21, "EISDIR", "is a directory"},