1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
#if NET_4_0
// ParallelState.cs
//
// Copyright (c) 2008 Jérémie "Garuma" Laval
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//
using System;
using System.Threading.Tasks;
namespace System.Threading
{
public class ParallelLoopState
{
internal class ExternalInfos
{
public AtomicBoolean IsStopped = new AtomicBoolean ();
public AtomicBoolean IsBroken = new AtomicBoolean ();
public volatile bool IsExceptional;
public long? LowestBreakIteration;
}
Task[] tasks;
ExternalInfos extInfos;
internal ParallelLoopState (Task[] tasks, ExternalInfos extInfos)
{
this.tasks = tasks;
this.extInfos = extInfos;
}
public bool IsStopped {
get {
return extInfos.IsStopped.Value;
}
}
public bool IsExceptional {
get {
return extInfos.IsExceptional;
}
}
public long? LowestBreakIteration {
get {
return extInfos.LowestBreakIteration;
}
}
internal int CurrentIteration {
get;
set;
}
public bool ShouldExitCurrentIteration {
get {
return IsExceptional || IsStopped;
}
}
public void Break ()
{
bool result = extInfos.IsBroken.Exchange (true);
if (!result)
extInfos.LowestBreakIteration = CurrentIteration;
}
public void Stop ()
{
bool result = extInfos.IsStopped.Exchange (true);
if (!result) {
foreach (var t in tasks) {
if (t == null)
continue;
t.Cancel ();
}
}
}
}
}
#endif
|
