Mercurial > pub > ImplabNet

annotate Implab/FuncChainTaskBase.cs @ 195:ea485487a424 v2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
minor changes
author cin
date Wed, 04 May 2016 12:28:08 +0300
parents dd4a3590f9c6
children 40d7fed4a09e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
1 using System;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
2
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
3 namespace Implab {
187
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
4 public class FuncChainTaskBase<TResult> : AbstractTask<TResult> {
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
5 readonly Func<Exception, IPromise<TResult>> m_error;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
6 readonly Func<Exception, IPromise<TResult>> m_cancel;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
7
149
eb793fbbe4ea fixed promises cancellation
cin
parents: 145
diff changeset
8 protected FuncChainTaskBase( Func<Exception, IPromise<TResult>> error, Func<Exception, IPromise<TResult>> cancel, bool autoCancellable) {
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
9 m_error = error;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
10 m_cancel = cancel;
149
eb793fbbe4ea fixed promises cancellation
cin
parents: 145
diff changeset
11 if (autoCancellable)
eb793fbbe4ea fixed promises cancellation
cin
parents: 145
diff changeset
12 CancellationRequested(CancelOperation);
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
13 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
14
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
15 public void Reject(Exception error) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
16 if (LockCancelation())
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
17 HandleErrorInternal(error);
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
18 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
19
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
20 public override void CancelOperation(Exception reason) {
187
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
21 if (LockCancelation())
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
22 HandleCancelInternal(reason);
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
23 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
24
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
25 protected void HandleErrorInternal(Exception error) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
26 if (m_error != null) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
27 try {
187
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
28 var p = m_error(error);
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
29 p.On(SetResult, SetErrorInternal, SetCancelledInternal);
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
30 CancellationRequested(p.Cancel);
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
31 } catch(Exception err) {
187
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
32 SetErrorInternal(err);
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
33 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
34 } else {
187
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
35 SetErrorInternal(error);
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
36 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
37 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
38
187
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
39 protected void HandleCancelInternal(Exception reason) {
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
40 if (m_cancel != null) {
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
41 try {
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
42 var p = m_cancel(reason);
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
43 p.On(SetResult, HandleErrorInternal, SetCancelledInternal);
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
44 CancellationRequested(p.Cancel);
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
45 } catch (Exception err) {
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
46 HandleErrorInternal(err);
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
47 }
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
48 } else {
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
49 HandleErrorInternal(reason ?? new OperationCanceledException());
dd4a3590f9c6 Reworked cancelation handling, if the cancel handler isn't specified the OperationCanceledException will be handled by the error handler
cin
parents: 149
diff changeset
50 }
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
51 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
52 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
53 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
54