annotate Implab/ActionTaskBase.cs @ 175:96a89dcb4060 ref20160224

sync
author cin
date Mon, 21 Mar 2016 18:41:45 +0300
parents eb793fbbe4ea
children dd4a3590f9c6
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 using System.Threading;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
3
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
4 namespace Implab {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
5 public class ActionTaskBase : AbstractPromise {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
6 readonly Action<Exception> m_cancel;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
7 readonly Action<Exception> m_error;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
8
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
9 int m_cancelationLock;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
10
149
eb793fbbe4ea fixed promises cancellation
cin
parents: 145
diff changeset
11 protected ActionTaskBase( Action<Exception> error, Action<Exception> cancel, bool autoCancellable) {
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
12 m_error = error;
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
13 m_cancel = cancel;
149
eb793fbbe4ea fixed promises cancellation
cin
parents: 145
diff changeset
14 if (autoCancellable)
eb793fbbe4ea fixed promises cancellation
cin
parents: 145
diff changeset
15 CancellationRequested(CancelOperation);
145
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
16 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
17
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
18 public void Reject(Exception error) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
19 Safe.ArgumentNotNull(error, "error");
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
20 if (LockCancelation())
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
21 HandleErrorInternal(error);
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
22 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
23
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
24 protected void HandleErrorInternal(Exception error) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
25 if (m_error != null) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
26 try {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
27 m_error(error);
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
28 SetResult();
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
29 } catch(Exception err) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
30 SetError(err);
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
31 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
32 } else {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
33 SetError(error);
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
34 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
35 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
36
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
37 public override void CancelOperation(Exception reason) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
38 if (LockCancelation()) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
39 if (m_cancel != null) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
40 try {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
41 m_cancel(reason);
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
42 SetResult();
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
43 } catch (Exception err) {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
44 HandleErrorInternal(err);
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
45 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
46 } else {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
47 SetCancelled(reason);
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
48 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
49 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
50 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
51
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
52 protected bool LockCancelation() {
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
53 return 0 == Interlocked.CompareExchange(ref m_cancelationLock, 1, 0);
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
54 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
55 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
56 }
706fccb85524 RC: cancellation support for promises + tests
cin
parents:
diff changeset
57