implab/ImplabNet Files · Implab/AbstractTaskT.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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             AbstractTaskT.cs
        
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      using System;

      using System.Threading;

      namespace Implab {

          public abstract class AbstractTask<T> : AbstractPromise<T> {

              int m_cancelationLock;

              /// <summary>

              /// Получает эксклюзивное право отмены задания, используется для отмены задания до начала его выполнения.

              /// </summary>

              /// <returns><c>true</c>, if cancelation was locked, <c>false</c> otherwise.</returns>

              protected bool LockCancelation() {

                  return 0 == Interlocked.CompareExchange(ref m_cancelationLock, 1, 0);

              }

              protected void SetErrorInternal(Exception error) {

                  // unwrap 

                  while (error is PromiseTransientException && error.InnerException != null)

                      error = error.InnerException;

                  if (error is OperationCanceledException)

                      SetCancelled(error);

                  else

                      SetError(error);

              }

              protected void SetCancelledInternal(Exception reason) {

                  SetCancelled(

                      reason == null ? new OperationCanceledException() : reason is OperationCanceledException ? reason : new OperationCanceledException(null, reason)

                  );

              }

          }

      }

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				using System;
				using System.Threading;

				namespace Implab {
				public abstract class AbstractTask<T> : AbstractPromise<T> {
				int m_cancelationLock;

				/// <summary>
				/// Получает эксклюзивное право отмены задания, используется для отмены задания до начала его выполнения.
				/// </summary>
				/// <returns><c>true</c>, if cancelation was locked, <c>false</c> otherwise.</returns>
				protected bool LockCancelation() {
				return 0 == Interlocked.CompareExchange(ref m_cancelationLock, 1, 0);
				}



				protected void SetErrorInternal(Exception error) {
				// unwrap
				while (error is PromiseTransientException && error.InnerException != null)
				error = error.InnerException;

				if (error is OperationCanceledException)
				SetCancelled(error);
				else
				SetError(error);
				}

				protected void SetCancelledInternal(Exception reason) {
				SetCancelled(
				reason == null ? new OperationCanceledException() : reason is OperationCanceledException ? reason : new OperationCanceledException(null, reason)
				);
				}
				}
				}