}
	return nil
}

// delete canceler from the map, cancel job if requested
func (j *BatchJobPool) canceler(jobID string, cancel bool) error {
	if j == nil {
		return errInvalidArgument
	}
	j.jmu.Lock()
	defer j.jmu.Unlock()
	if canceler, ok := j.jobCancelers[jobID]; ok {
		if cancel {
			canceler()
		}
	}
	if cancel {
		delete(j.jobCancelers, jobID)
	}
	return nil

	go c.readStream(ctx, conn, cancel)
	c.writeStream(ctx, conn, cancel)
}

// readStream handles the read side of the connection.
// It will read messages and send them to c.handleMsg.
// If an error occurs the cancel function will be called and conn be closed.
// The function will block until the connection is closed or an error occurs.
func (c *Connection) readStream(ctx context.Context, conn net.Conn, cancel context.CancelCauseFunc) {

  }

  public void testListenerCalledOnCancelFromRunning() throws Exception {
    exec.execute(task);
    runLatch.await();

    // Task has started up, cancel it while it's running.
    task.cancel(true);
    assertTrue(task.isDone());
    assertTrue(task.isCancelled());
    assertEquals(1, taskLatch.getCount());

    // Wait for the listeners to be called.

		for par := 1; par <= 32; par *= 2 {
			b.Run("par="+strconv.Itoa(par*runtime.GOMAXPROCS(0)), func(b *testing.B) {
				defer timeout(60 * time.Second)()
				ctx, cancel := context.WithTimeout(b.Context(), 30*time.Second)
				defer cancel()
				b.ReportAllocs()
				b.SetBytes(int64(len(payload) * 2))
				b.ResetTimer()
				t := time.Now()
				var ops int64
				var lat int64
				b.SetParallelism(par)

            }
          });
      executor.execute(
          new Runnable() {
            @Override
            public void run() {
              future.cancel(true);
              if (!future.isDone()) {
                errorMessage.set("Cancel call exited before future was complete.");
              }
            }
          });
      try {
        future.get();
      } catch (Throwable t) {

that by default Kotlin's Dispatchers are not used.

Cancellation if implemented sensibly in both directions.
Cancelling a coroutine scope, will cancel the call.
Cancelling a call, will throw a CancellationException

func benchmarkPutObjectPart(b *testing.B, instanceType string, objSize int) {
	// create a temp Erasure/FS backend.
	ctx, cancel := context.WithCancel(b.Context())
	defer cancel()
	objLayer, disks, err := prepareTestBackend(ctx, instanceType)
	if err != nil {
		b.Fatalf("Failed obtaining Temp Backend: <ERROR> %s", err)
	}

            }
          });
      executor.execute(
          new Runnable() {
            @Override
            public void run() {
              future.cancel(true);
              if (!future.isDone()) {
                errorMessage.set("Cancel call exited before future was complete.");
              }
            }
          });
      try {
        future.get();
      } catch (Throwable t) {

		c.Fatalf("expected err(%s) but got (%s)", errNoSuchUser, err)
	}
}

func (s *TestSuiteIAM) SFTPInvalidServiceAccountPassword(c *check) {
	ctx, cancel := context.WithTimeout(context.Background(), testDefaultTimeout)
	defer cancel()

	accessKey, secretKey := mustGenerateCredentials(c)
	err := s.adm.SetUser(ctx, accessKey, secretKey, madmin.AccountEnabled)
	if err != nil {

		return &Stream{responses: responseCh, Requests: nil, ctx: m.ctx, cancel: m.cancelFn, muxID: m.MuxID}, nil
	}

	// Deliver responses and send unblocks back to the server.
	go m.handleTwowayResponses(responseCh, responses)
	go m.handleTwowayRequests(responses, requests)

	return &Stream{responses: responseCh, Requests: requests, ctx: m.ctx, cancel: m.cancelFn, muxID: m.MuxID}, nil
}