// timer *and* nothing else will call wake concurrently.
func (s *wakeableSleep) close() {
	// Set wakeup to nil so that a late timer ends up being a no-op.
	lock(&s.lock)
	if raceenabled {
		raceacquire(unsafe.Pointer(&s.lock))
	}
	wakeup := s.wakeup
	s.wakeup = nil

	// Close the channel.
	close(wakeup)

	if raceenabled {
		racerelease(unsafe.Pointer(&s.lock))
	}
	unlock(&s.lock)

// Intended use is provide a sleep and wakeup
// primitive that can be used in the contended case
// of other synchronization primitives.
// Thus it targets the same goal as Linux's futex,
// but it has much simpler semantics.
//
// That is, don't think of these as semaphores.
// Think of them as a way to implement sleep and wakeup
// such that every sleep is paired with a single wakeup,

				t.Logf("%d: %q", samples, stack)
			}
			t.Logf("CPU profile:\n%s", stderr)
		}
	})
}

func TestTraceFutileWakeup(t *testing.T) {
	testTraceProg(t, "futile-wakeup.go", func(t *testing.T, tb, _ []byte, _ bool) {
		// Check to make sure that no goroutine in the "special" trace region
		// ends up blocking, unblocking, then immediately blocking again.
		//

	default:
		throw("runtime: bad mode")
	}
	unlock(&pd.lock)
}

// netpollBreak interrupts a port_getn wait.
func netpollBreak() {
	// Failing to cas indicates there is an in-flight wakeup, so we're done here.
	if !netpollWakeSig.CompareAndSwap(0, 1) {
		return
	}

	// Use port_alert to put portfd into alert mode.
	// This will wake up all threads sleeping in port_getn on portfd,

For one-shot notifications, use `note`, which provides `notesleep` and
`notewakeup`. Unlike traditional UNIX `sleep`/`wakeup`, `note`s are
race-free, so `notesleep` returns immediately if the `notewakeup` has
already happened. A `note` can be reset after use with `noteclear`,
which must not race with a sleep or wakeup. Like `mutex`, blocking on
a `note` blocks the M. However, there are different ways to sleep on a

	mux.Handle("/", traceviewer.MainHandler([]traceviewer.View{
		{Type: traceviewer.ViewProc, Ranges: ranges},
		// N.B. Use the same ranges for threads. It takes a long time to compute
		// the split a second time, but the makeup of the events are similar enough
		// that this is still a good split.
		{Type: traceviewer.ViewThread, Ranges: ranges},
	}))

	// Catapult handlers.
	mux.Handle("/trace", traceviewer.TraceHandler())

			t.Fatal("Returned Instance is incorrect")
		}
	}

	// Get Instances from mockAdapter2
	instances = aggregateCtl.GetProxyServiceTargets(&model.Proxy{IPAddresses: []string{mock.MakeIP(mock.WorldService, 1)}})
	if len(instances) != 6 {
		t.Fatalf("Returned GetProxyServiceTargets' amount %d is not correct", len(instances))
	}
	for _, inst := range instances {

  // TODO: support this field
  string hostname = 21;

  // Network represents the network this workload is on. This may be elided for the default network.
  // A (network,address) pair makeup a unique key for a workload *at a point in time*.
  string network = 4;

  // Protocol that should be used to connect to this workload.
  TunnelProtocol tunnel_protocol = 5;

			} else {
				c.recvq.dequeueSudoG(sglist)
			}
		}
		sgnext = sglist.waitlink
		sglist.waitlink = nil
		releaseSudog(sglist)
		sglist = sgnext
	}

	if cas == nil {
		throw("selectgo: bad wakeup")
	}

	c = cas.c

	if debugSelect {
		print("wait-return: cas0=", cas0, " c=", c, " cas=", cas, " send=", casi < nsends, "\n")
	}

	if casi < nsends {
		if !caseSuccess {
			goto sclose

	EvTimerGoroutine    event.Type = 35 // denotes timer goroutine [timer goroutine id]
	EvFutileWakeup      event.Type = 36 // denotes that the previous wakeup of this goroutine was futile [timestamp]
	EvString            event.Type = 37 // string dictionary entry [ID, length, string]