//      */
  //     public void await(AtomicBoolean flag) {
  //         await(flag, LONG_DELAY_MS);
  //     }

  //     /**
  //      * Spin-waits up to the specified timeout until flag becomes true.
  //      */
  //     public void await(AtomicBoolean flag, long timeoutMillis) {
  //         long startTime = System.nanoTime();
  //         while (!flag.get()) {

cancellationToken.addCallback {
    latch.countDown()
}

// Signal to test that callback has been registered
${server.callFromBuild("registered")}
// Wait until cancel request received by build process
latch.await()
"""

    }

    void buildWasCancelled(TestResultHandler resultHandler, String failureMessage = 'Could not execute build using') {

	// await until controller.taintedNodes is empty
	err := wait.PollImmediate(10*time.Millisecond, time.Second, func() (bool, error) {
		controller.taintedNodesLock.Lock()
		defer controller.taintedNodesLock.Unlock()
		_, ok := controller.taintedNodes["node1"]
		return !ok, nil
	})
	if err != nil {
		t.Errorf("Failed to await for processing node deleted: %q", err)
	}
	cancel()
}

                            client.inputStream.skip(client.inputStream.available())
                        }
                        client.shutdownOutput()
                        latch.await() // wait for the end of the test before closing the connection
                        println("Closing client ${client.remoteSocketAddress}")
                    }
                } catch (SocketException e) {

  //      */
  //     public void await(AtomicBoolean flag) {
  //         await(flag, LONG_DELAY_MS);
  //     }

  //     /**
  //      * Spin-waits up to the specified timeout until flag becomes true.
  //      */
  //     public void await(AtomicBoolean flag, long timeoutMillis) {
  //         long startTime = System.nanoTime();
  //         while (!flag.get()) {

  // Space for returned values.
  llvm::SmallVector<RCReference<AsyncValue>> results(compute->num_results());

  compute->Execute(*exec_ctx_, exec_arguments, results);

  // Wait for the function execution to finish, as well as the side-effects.
  host_context_->Await(results);

  // Check that all results are available.
  llvm::SmallVector<Tensor> ret_values;
  for (unsigned i = 1; i < results.size(); ++i) {

# Concurrencia y async / await

Detalles sobre la sintaxis `async def` para *path operation functions* y un poco de información sobre código asíncrono, concurrencia y paralelismo.

## ¿Tienes prisa?

<abbr title="too long; didn't read"><strong>TL;DR:</strong></abbr>

Si estás utilizando libraries de terceros que te dicen que las llames con `await`, del tipo:

```Python
results = await some_library()
```

func (w Waitmsg) ExitStatus() int {
	if len(w.Msg) == 0 {
		// a normal exit returns no message
		return 0
	}
	return 1
}

//sys	await(s []byte) (n int, err error)

func Await(w *Waitmsg) (err error) {
	var buf [512]byte
	var f [5][]byte

	n, err := await(buf[:])

	if err != nil || w == nil {
		return
	}

	nf := 0
	p := 0
	for i := 0; i < n && nf < len(f)-1; i++ {

						// proceed to heal nonetheless, since
						// this object might be dangling.
						entry, _ = entries.firstFound()
					}
					wait := noWait
					if f.weSleep() {
						// wait timer per object.
						wait = scannerSleeper.Timer(ctx)
					}
					defer wait()
					f.updateCurrentPath(entry.name)
					stopFn := globalScannerMetrics.log(scannerMetricHealAbandonedObject, f.root, entry.name)

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

    public void waitForStart() throws InterruptedException {
      startLatch.await();
    }

    public void stop() {
      stopLatch.countDown();
    }

    public boolean isRunning() {