defer cancel3()
	checkNoGoroutine()

	_, cancel3b := WithCancel(&myDoneCtx{ctx2})
	defer cancel3b()
	checkCreatedGoroutine() // ctx1 is not providing Done, must not be used

	ctx4, cancel4 := WithTimeout(ctx3, veryLongDuration)
	defer cancel4()
	checkNoGoroutine()

	ctx5, cancel5 := WithCancel(ctx4)
	defer cancel5()
	checkNoGoroutine()

	cancel5()
	checkNoGoroutine()

	ctx0 := &afterFuncContext{}
	ctx1, cancel := context.WithTimeout(ctx0, veryLongDuration)
	defer cancel()
	ctx0.cancel(context.Canceled)
	<-ctx1.Done()
}

func TestCustomContextAfterFuncAfterFunc(t *testing.T) {
	ctx0 := &afterFuncContext{}
	donec := make(chan struct{})
	stop := context.AfterFunc(ctx0, func() {
		close(donec)
	})
	defer stop()
	ctx0.cancel(context.Canceled)
	<-donec
}

	defer cancel1(errors.New("ctx1 canceled"))

	ctx2, cancel2 := context.WithCancelCause(context.Background())

	mergedCtx, mergedCancel := mergeCancel(ctx1, ctx2)
	defer mergedCancel()

	cancel2(errors.New("ctx2 canceled"))
	<-mergedCtx.Done()
	fmt.Println(context.Cause(mergedCtx))

	// Output:
	// ctx2 canceled

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.gradle.launcher.daemon.protocol;

public class Cancel extends Message {

		// This is a long SELECT. Use the request context as the base of
		// the context timeout, but give it some time to finish. If
		// the client cancels before the query is done the query will also
		// be canceled.
		ctx, cancel := context.WithTimeout(r.Context(), 60*time.Second)
		defer cancel()

		var names []string
		rows, err := db.QueryContext(ctx, "select p.name from people as p where p.active = true;")
		if err != nil {

	drwm1 := NewDRWMutex(ds, "simplelock")
	ctx1, cancel1 := context.WithCancel(context.Background())
	if !drwm1.GetRLock(ctx1, cancel1, id, source, Options{Timeout: time.Second}) {
		panic("Failed to acquire read lock")
	}
	// fmt.Println("1st read lock acquired, waiting...")

	drwm2 := NewDRWMutex(ds, "simplelock")
	ctx2, cancel2 := context.WithCancel(context.Background())
	if !drwm2.GetRLock(ctx2, cancel2, id, source, Options{Timeout: time.Second}) {

//
// The derived Context is canceled the first time a function passed to Go
// returns a non-nil error or the first time Wait returns, whichever occurs
// first.
func WithContext(ctx context.Context) (*Group, context.Context) {
	ctx, cancel := withCancelCause(ctx)
	return &Group{cancel: cancel}, ctx
}

// Wait blocks until all function calls from the Go method have returned, then

// LockContext lock context holds the lock backed context and canceler for the context.
type LockContext struct {
	ctx    context.Context
	cancel context.CancelFunc
}

// Context returns lock context
func (l LockContext) Context() context.Context {
	return l.ctx
}

// Cancel function calls cancel() function
func (l LockContext) Cancel() {
	if l.cancel != nil {
		l.cancel()
	}
}

   * exception.
   *
   * @throws IllegalStateException when the call has already been executed.
   */
  fun enqueue(responseCallback: Callback)

  /** Cancels the request, if possible. Requests that are already complete cannot be canceled. */
  fun cancel()

  /**
   * Returns true if this call has been either [executed][execute] or [enqueued][enqueue]. It is an
   * error to execute a call more than once.
   */

func TestContextFromChannelAndMaxWaitDurationWithMaxWaitElapsed(t *testing.T) {
	stopCh := make(chan struct{})
	ctx, cancel := contextFromChannelAndMaxWaitDuration(stopCh, 100*time.Millisecond)
	defer cancel()

	<-ctx.Done()

	if ctx.Err() != context.Canceled {
		t.Errorf("Expected the context to be canceled with: %v, but got: %v", context.Canceled, ctx.Err())
	}