testgen "internal/trace/internal/testgen/go122"
)

func main() {
	testgen.Main(gen)
}

func gen(t *testgen.Trace) {
	g1 := t.Generation(1)

	// A goroutine gets created on a running P, then starts running.
	b0 := g1.Batch(trace.ThreadID(0), 0)
	b0.Event("ProcStatus", trace.ProcID(0), go122.ProcRunning)
	b0.Event("GoCreate", trace.GoID(5), testgen.NoStack, testgen.NoStack)

    private final CountDownLatch stopLatch = new CountDownLatch(1);

    private volatile boolean running = false;

    @Override
    public @Nullable Void call() throws InterruptedException {
      running = true;
      startLatch.countDown();
      stopLatch.await();
      running = false;
      return null;
    }

    public void waitForStart() throws InterruptedException {

    private final CountDownLatch stopLatch = new CountDownLatch(1);

    private volatile boolean running = false;

    @Override
    public @Nullable Void call() throws InterruptedException {
      running = true;
      startLatch.countDown();
      stopLatch.await();
      running = false;
      return null;
    }

    public void waitForStart() throws InterruptedException {

		// will take back its thread-lock state before returning.
		gdestroy(gp)
		gp = nil
	} else {
		// If we can CAS ourselves directly from running to waiting, so do,
		// keeping the control transfer as lightweight as possible.
		gp.waitreason = waitReasonCoroutine
		if !gp.atomicstatus.CompareAndSwap(_Grunning, _Gwaiting) {
			// The CAS failed: use casgstatus, which will take care of

	}
	if state.status != go122.GoRunning {
		return curCtx, false, fmt.Errorf("%s event for goroutine that's not %s", go122.EventString(ev.typ), GoRunning)
	}
	// Goroutine entered a syscall. It's still running on this P and M.
	state.status = go122.GoSyscall
	pState, ok := o.pStates[curCtx.P]
	if !ok {

func gen(t *testgen.Trace) {
	g := t.Generation(1)

	// One goroutine enters a syscall, grabs a P, and starts running.
	b0 := g.Batch(trace.ThreadID(0), 0)
	b0.Event("ProcStatus", trace.ProcID(1), go122.ProcIdle)
	b0.Event("ProcStatus", trace.ProcID(0), go122.ProcRunning)
	b0.Event("GoStatus", trace.GoID(1), trace.ThreadID(0), go122.GoRunning)
	b0.Event("GoSyscallBegin", testgen.Seq(1), testgen.NoStack)

	switch pp.status {
	case _Pidle, _Pgcstop:
		status = traceProcIdle
		if pp.status == _Pgcstop && inSTW {
			// N.B. a P that is running and currently has the world stopped will be
			// in _Pgcstop, but we model it as running in the tracer.
			status = traceProcRunning
		}
	case _Prunning:
		status = traceProcRunning
		// There's a short window wherein the goroutine may have entered _Gsyscall

        }

        logger.info("Crawler is running");
        count = 0;
        isRunning = true;
        while (count < 300 && isRunning) { // Wait until the crawler terminates
            ThreadUtil.sleep(1000);
            count++;
            final Map<String, Object> scheduler = getSchedulerItem(namePrefix);
            assertTrue(scheduler.containsKey("running"));
            isRunning = (Boolean) scheduler.get("running");

        }

    val idleCallback: Runnable?
    this.withLock {
      if (!calls.remove(call)) throw AssertionError("Call wasn't in-flight!")
      idleCallback = this.idleCallback
    }

    val isRunning = promoteAndExecute()

    if (!isRunning && idleCallback != null) {
      idleCallback.run()
    }
  }

  /** Returns a snapshot of the calls currently awaiting execution. */
  fun queuedCalls(): List<Call> =

			// count and the scheduler skips suspended
			// goroutines? That wouldn't be enough for
			// {_Gsyscall,_Gwaiting} -> _Grunning. Maybe
			// for all those transitions we need to check
			// suspended and deschedule?
			return suspendGState{g: gp, stopped: stopped}

		case _Grunning:
			// Optimization: if there is already a pending preemption request
			// (from the previous loop iteration), don't bother with the atomics.