ctx, cancel := context.WithCancel(ctx)

	// reset global variables to start afresh.
	resetTestGlobals()

	// Set globalIsErasure to indicate that the setup uses an erasure
	// code backend.
	globalIsErasure = true

	// Initializing objectLayer for HealFormatHandler.
	objLayer, erasureDirs, xlErr := initTestErasureObjLayer(ctx)
	if xlErr != nil {
		cancel()
		return nil, xlErr
	}

        assertArgumentNotNull("channel", channel);

        try {
            return channel.size();
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Reads the contents of the file channel into a byte buffer.
     *
     * @param channel
     *            The file channel. Must not be {@literal null}.
     * @param buffer

            }
          });
      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) {

        }

        public void addChannel(ChannelInfo channel) {
            channels.add(channel);
            if (primaryChannel == null) {
                primaryChannel = channel;
            }
        }

        public void removeChannel(ChannelInfo channel) {
            channels.remove(channel);
            if (primaryChannel == channel && !channels.isEmpty()) {
                primaryChannel = channels.get(0);

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)
	}

        transaction.setMid(12345);

        // Create cancel request
        CommonServerMessageBlockRequest cancelRequest = transaction.createCancel();

        // Verify it returns an SmbComNtCancel instance
        assertNotNull(cancelRequest);
        assertTrue(cancelRequest instanceof SmbComNtCancel);

        // Verify the cancel request has the correct MID
        assertEquals(12345, cancelRequest.getMid());

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

    }

    @Override
    public boolean isCancelled() {
      return sync.isCancelled();
    }

    @CanIgnoreReturnValue
    @Override
    public boolean cancel(boolean mayInterruptIfRunning) {
      if (!sync.cancel(mayInterruptIfRunning)) {
        return false;
      }
      executionList.execute();
      if (mayInterruptIfRunning) {
        interruptTask();
      }
      return true;

  }

  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.

        } catch (Exception e) {
            log.warn("Failed to recover channel {}: {}", channel.getChannelId(), e.getMessage());

            // Schedule next retry or remove
            handleFailure(channel, e);
        }
    }

    private void removeChannel(ChannelInfo channel) {
        log.info("Removing failed channel {} after max retries", channel.getChannelId());