implab/ImplabNet Files · Implab/ActionChainTaskBase.cs

Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...

Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler Any unhandled OperationCanceledException will cause the promise cancelation

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r187:dd4a3590f9c6 ref20160224


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             ActionChainTaskBase.cs
        
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        cin
    
RC: cancellation support for promises + tests

              r145
            
      using System;

      using System.Threading;

      namespace Implab {

        cin
    
Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...

              r187
            
          public class ActionChainTaskBase : AbstractTask {

        cin
    
RC: cancellation support for promises + tests

              r145
            
              readonly Func<Exception, IPromise> m_error;

              readonly Func<Exception, IPromise> m_cancel;

        cin
    
fixed promises cancellation

              r149
            
              protected ActionChainTaskBase(Func<Exception, IPromise> error, Func<Exception, IPromise> cancel, bool autoCancellable) {

        cin
    
RC: cancellation support for promises + tests

              r145
            
                  m_error = error;

                  m_cancel = cancel;

        cin
    
fixed promises cancellation

              r149
            
                  if (autoCancellable)

                      CancellationRequested(CancelOperation);

        cin
    
RC: cancellation support for promises + tests

              r145
            
              }

              public void Reject(Exception error) {

                  if (LockCancelation())

                      HandleErrorInternal(error);

              }

              public override void CancelOperation(Exception reason) {

        cin
    
Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...

              r187
            
                  if (LockCancelation())

                      // отмена вызвана до начала выполнения задачи

                      HandleCancelInternal(reason);

              }

              protected void HandleCancelInternal(Exception reason) {

                  if (m_cancel != null) {

                      try {

                          // вызываем обработчик отмены

                          var p = m_cancel(reason);

                          p.On(SetResult, HandleErrorInternal, SetCancelledInternal);

                          // сообщаем асинхронной операции, что клиент уже не хочет получать результат

                          // т.е. если он инициировал отмену, задача отменилась, вызвался обрабочик отмены

                          // отбработчику сообщили, что результат уже не нужен и уже сам обработчик решает

                          // отдавать ли результат или подтвердить отмену (или вернуть ошибку).

                          CancellationRequested(p.Cancel);

                      } catch (Exception err) {

                          HandleErrorInternal(err);

        cin
    
RC: cancellation support for promises + tests

              r145
            
                      }

        cin
    
Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...

              r187
            
                  } else {

                      HandleErrorInternal(reason ?? new OperationCanceledException());

        cin
    
RC: cancellation support for promises + tests

              r145
            
                  }

              }

        cin
    
Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...

              r187
            
              protected void HandleErrorInternal(Exception error) {

        cin
    
RC: cancellation support for promises + tests

              r145
            
                  if (m_error != null) {

                      try {

        cin
    
fixed promises cancellation

              r149
            
                          var p = m_error(error);

        cin
    
Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...

              r187
            
                          p.On(SetResult, SetErrorInternal, SetCancelledInternal);

        cin
    
fixed promises cancellation

              r149
            
                          CancellationRequested(p.Cancel);

                      } catch (Exception err) {

        cin
    
Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...

              r187
            
                          SetErrorInternal(error);

        cin
    
RC: cancellation support for promises + tests

              r145
            
                      }

                  } else {

        cin
    
working on cancelation and error handling

              r186
            
                      SetErrorInternal(error);

                  }

              }

        cin
    
RC: cancellation support for promises + tests

              r145
            
          }

      }

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cin RC: cancellation support for promises + tests	r145	using System;
		using System.Threading;

		namespace Implab {
cin Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...	r187	public class ActionChainTaskBase : AbstractTask {
cin RC: cancellation support for promises + tests	r145	readonly Func<Exception, IPromise> m_error;
		readonly Func<Exception, IPromise> m_cancel;

cin fixed promises cancellation	r149	protected ActionChainTaskBase(Func<Exception, IPromise> error, Func<Exception, IPromise> cancel, bool autoCancellable) {
cin RC: cancellation support for promises + tests	r145	m_error = error;
		m_cancel = cancel;
cin fixed promises cancellation	r149	if (autoCancellable)
		CancellationRequested(CancelOperation);
cin RC: cancellation support for promises + tests	r145	}

		public void Reject(Exception error) {
		if (LockCancelation())
		HandleErrorInternal(error);
		}

		public override void CancelOperation(Exception reason) {
cin Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...	r187	if (LockCancelation())
		// отмена вызвана до начала выполнения задачи
		HandleCancelInternal(reason);
		}

		protected void HandleCancelInternal(Exception reason) {
		if (m_cancel != null) {
		try {
		// вызываем обработчик отмены
		var p = m_cancel(reason);
		p.On(SetResult, HandleErrorInternal, SetCancelledInternal);
		// сообщаем асинхронной операции, что клиент уже не хочет получать результат
		// т.е. если он инициировал отмену, задача отменилась, вызвался обрабочик отмены
		// отбработчику сообщили, что результат уже не нужен и уже сам обработчик решает
		// отдавать ли результат или подтвердить отмену (или вернуть ошибку).
		CancellationRequested(p.Cancel);
		} catch (Exception err) {
		HandleErrorInternal(err);
cin RC: cancellation support for promises + tests	r145	}
cin Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...	r187	} else {
		HandleErrorInternal(reason ?? new OperationCanceledException());
cin RC: cancellation support for promises + tests	r145	}
		}

cin Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...	r187	protected void HandleErrorInternal(Exception error) {
cin RC: cancellation support for promises + tests	r145	if (m_error != null) {
		try {
cin fixed promises cancellation	r149	var p = m_error(error);
cin Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...	r187	p.On(SetResult, SetErrorInternal, SetCancelledInternal);
cin fixed promises cancellation	r149	CancellationRequested(p.Cancel);
		} catch (Exception err) {
cin Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler...	r187	SetErrorInternal(error);
cin RC: cancellation support for promises + tests	r145	}
		} else {
cin working on cancelation and error handling	r186	SetErrorInternal(error);
		}
		}

cin RC: cancellation support for promises + tests	r145	}
		}