// scheduler netpoll.
loop:
	for {
		runtime.Usleep(100)
		runtime.NetpollBreak()
		runtime.NetpollBreak()
		select {
		case <-c:
			break loop
		default:
		}
	}
	if dur := time.Since(start); dur > 5*time.Second {
		t.Errorf("netpollBreak did not interrupt netpoll: slept for: %v", dur)
	}
}

		if pds[i].fd == fd {
			netpolldisarm(pds[i], 'r'+'w')
			pds[i] = pds[len(pds)-1]
			pds = pds[:len(pds)-1]
			break
		}
	}
	unlock(&mtx)
	return 0
}

func netpollBreak() {}

func netpoll(delay int64) (gList, int32) {
	lock(&mtx)

	// If delay >= 0, we include a subscription of type Clock that we use as
	// a timeout. If delay < 0, we omit the subscription and allow poll_oneoff

//     Return a list of goroutines built by calling netpollready,
//     and a delta to add to netpollWaiters when all goroutines are ready.
//     This will never return an empty list with a non-zero delta.
//
// func netpollBreak()
//     Wake up the network poller, assumed to be blocked in netpoll.
//
// func netpollIsPollDescriptor(fd uintptr) bool
//     Reports whether fd is a file descriptor used by the poller.

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

				mp.becomeSpinning()
			}
			goto top
		}
	} else if pollUntil != 0 && netpollinited() {
		pollerPollUntil := sched.pollUntil.Load()
		if pollerPollUntil == 0 || pollerPollUntil > pollUntil {
			netpollBreak()
		}
	}
	stopm()
	goto top
}

// pollWork reports whether there is non-background work this P could
// be doing. This is a fairly lightweight check to be used for