// by a client to resume a TLS session with a given server. ClientSessionCache
// implementations should expect to be called concurrently from different
// goroutines. Up to TLS 1.2, only ticket-based resumption is supported, not
// SessionID-based resumption. In TLS 1.3 they were merged into PSK modes, which
// are supported via this interface.
type ClientSessionCache interface {

	// other goroutine has updated it in the meantime. We therefore cannot use
	// SSA here to add the pod because then we would have to send the entire slice
	// or use different field manager strings for each entry.
	//
	// With a strategic-merge-patch, we can simply send one new entry. The apiserver
	// validation will catch if two goroutines try to do that at the same time and

	// EOF) instead of (n, nil), to signal to the HTTP response reading
	// goroutine that the connection is now closed. This eliminates a race
	// where the HTTP response reading goroutine would otherwise not observe
	// the EOF until its next read, by which time a client goroutine might
	// have already tried to reuse the HTTP connection for a new request.

		s.parked = false

		// Ready the goroutine by injecting it. We use injectglist instead
		// of ready or goready in order to allow us to run this function
		// without a P. injectglist also avoids placing the goroutine in
		// the current P's runnext slot, which is desirable to prevent
		// the scavenger from interfering with user goroutine scheduling
		// too much.
		var list gList
		list.push(s.g)

	}

	tc.informerFactory.Start(tc.ctx.Done())
	t.Cleanup(func() {
		// Need to cancel before waiting for the shutdown.
		tCtx.Cancel("test is done")
		// Now we can wait for all goroutines to stop.
		tc.informerFactory.Shutdown()
	})

	tc.informerFactory.WaitForCacheSync(tc.ctx.Done())

	for _, node := range nodes {
		nodeInfo := framework.NewNodeInfo()
		nodeInfo.SetNode(node)

// debugCallV2 is the entry point for debugger-injected function
// calls on running goroutines. It informs the runtime that a
// debug call has been injected and creates a call frame for the
// debugger to fill in.
//
// To inject a function call, a debugger should:
// 1. Check that the goroutine is in state _Grunning and that
//    there are at least 256 bytes free on the stack.

//
// Times measured as an int64 seconds since the year 1970 are called Unix
// times.
//
// It is tempting to just use the year 1 as the absolute epoch, defining
// that the routines are only valid for years >= 1. However, the
// routines would then be invalid when displaying the epoch in time zones
// west of UTC, since it is year 0. It doesn't seem tenable to say that
// printing the zero time correctly isn't supported in half the time

	AssignedPodUpdated(logger klog.Logger, oldPod, newPod *v1.Pod)
	PendingPods() ([]*v1.Pod, string)
	PodsInActiveQ() []*v1.Pod
	// Close closes the SchedulingQueue so that the goroutine which is
	// waiting to pop items can exit gracefully.
	Close()
	// Run starts the goroutines managing the queue.
	Run(logger klog.Logger)
}

// NewSchedulingQueue initializes a priority queue as a new scheduling queue.
func NewSchedulingQueue(

					cpu:       strconv.Itoa(i),
					short:     true,
					testFlags: []string{"-quick"},
					// We set GOMAXPROCS=2 in addition to -cpu=1,2,4 in order to test runtime bootstrap code,
					// creation of first goroutines and first garbage collections in the parallel setting.
					env: []string{"GOMAXPROCS=2"},
					pkg: "runtime",
				})
		}
	}

	if t.raceDetectorSupported() {
		t.registerRaceTests()
	}

	item.pause = false
	for i := 0; i < item.queue; i++ {
		item.out <- struct{}{}
	}
	item.queue = 0
}

// WorkChannel intercepts podWork channels between the pod worker and its child
// goroutines and allows tests to pause or release the flow of podWork to the
// workers.
type WorkChannel struct {
	lock     sync.Mutex
	channels map[types.UID]*WorkChannelItem
}