Mercurial > pub > ImplabNet

annotate Implab/AbstractTaskT.cs @ 196:40d7fed4a09e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fixed promise chaining behavior, the error handler doesn't handle result or cancellation handlers exceptions these exceptions are propagated to the next handlers.
author cin
date Mon, 29 Aug 2016 23:15:51 +0300
parents dd4a3590f9c6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
187
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
1 using System;
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
2 using System.Threading;
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
3
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
4 namespace Implab {
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
5 public abstract class AbstractTask<T> : AbstractPromise<T> {
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
6 int m_cancelationLock;
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
7
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
8 /// <summary>
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
9 /// Получает эксклюзивное право отмены задания, используется для отмены задания до начала его выполнения.
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
10 /// </summary>
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
11 /// <returns><c>true</c>, if cancelation was locked, <c>false</c> otherwise.</returns>
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
12 protected bool LockCancelation() {
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
13 return 0 == Interlocked.CompareExchange(ref m_cancelationLock, 1, 0);
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
14 }
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
15
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
16
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
17
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
18 protected void SetErrorInternal(Exception error) {
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
19 // unwrap
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
20 while (error is PromiseTransientException && error.InnerException != null)
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
21 error = error.InnerException;
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
22
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
23 if (error is OperationCanceledException)
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
24 SetCancelled(error);
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
25 else
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
26 SetError(error);
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
27 }
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
28
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
29 protected void SetCancelledInternal(Exception reason) {
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
30 SetCancelled(
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
31 reason == null ? new OperationCanceledException() : reason is OperationCanceledException ? reason : new OperationCanceledException(null, reason)
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
32 );
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
33 }
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
34 }
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
35 }
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents:
diff changeset
36