} catch (InterruptedException ie) {
              // continue
            }
            LockSupport.unpark(Thread.currentThread()); // simulate a spurious wakeup.
            return null;
          }

          @Override
          boolean isDone() {
            return false;
          }

          @Override
          String toPendingString() {

	return 0
}

func netpollarm(pd *pollDesc, mode int) {
	throw("runtime: unused")
}

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

	wakeNetpoll(kq)
}

// netpoll checks for ready network connections.
// Returns list of goroutines that become runnable.

	notesWithTimeout = make(map[*note]noteWithTimeout)
)

func noteclear(n *note) {
	n.key = note_cleared
}

func notewakeup(n *note) {
	// gp := getg()
	if n.key == note_woken {
		throw("notewakeup - double wakeup")
	}
	cleared := n.key == note_cleared
	n.key = note_woken
	if cleared {
		goready(notes[n], 1)
	}
}

func notesleep(n *note) {
	throw("notesleep not supported by js")
}

		}
	} else {
		// Starving mode: handoff mutex ownership to the next waiter, and yield
		// our time slice so that the next waiter can start to run immediately.
		// Note: mutexLocked is not set, the waiter will set it after wakeup.
		// But mutex is still considered locked if mutexStarving is set,
		// so new coming goroutines won't acquire it.
		runtime_Semrelease(&m.sema, true, 1)
	}

			// Sleep here because traceReadCPU is non-blocking. This mirrors
			// how the runtime/pprof package obtains CPU profile data.
			//
			// We can't do a blocking read here because Darwin can't do a
			// wakeup from a signal handler, so all CPU profiling is just
			// non-blocking. See #61768 for more details.
			//
			// Like the runtime/pprof package, even if that bug didn't exist

	// nothing to do
	return 0
}

func netpollarm(pd *pollDesc, mode int) {
	throw("runtime: unused")
}

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

	key := packNetpollKey(netpollSourceBreak, nil)
	if stdcall4(_PostQueuedCompletionStatus, iocphandle, 0, key, 0) == 0 {