1 | #Region "Microsoft.VisualBasic::8ebf39e8b7a77bb3f9a58d9bb322f5e6, Microsoft.VisualBasic.Core\ApplicationServices\Parallel\OperationTimeOut.vb" |
2 | |
3 | ' Author: |
4 | ' |
5 | ' asuka (amethyst.asuka@gcmodeller.org) |
6 | ' xie (genetics@smrucc.org) |
7 | ' xieguigang (xie.guigang@live.com) |
8 | ' |
9 | ' Copyright (c) 2018 GPL3 Licensed |
10 | ' |
11 | ' |
12 | ' GNU GENERAL PUBLIC LICENSE (GPL3) |
13 | ' |
14 | ' |
15 | ' This program is free software: you can redistribute it and/or modify |
16 | ' it under the terms of the GNU General Public License as published by |
17 | ' the Free Software Foundation, either version 3 of the License, or |
18 | ' (at your option) any later version. |
19 | ' |
20 | ' This program is distributed in the hope that it will be useful, |
21 | ' but WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | ' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
23 | ' GNU General Public License for more details. |
24 | ' |
25 | ' You should have received a copy of the GNU General Public License |
26 | ' along with this program. If not, see <http://www.gnu.org/licenses/>. |
27 | |
28 | |
29 | |
30 | ' /********************************************************************************/ |
31 | |
32 | ' Summaries: |
33 | |
34 | ' Module TimeOutAPI |
35 | ' |
36 | ' Function: (+3 Overloads) OperationTimeOut |
37 | ' |
38 | ' |
39 | ' /********************************************************************************/ |
40 | |
41 | #End Region |
42 | |
43 | Imports System.Runtime.CompilerServices |
44 | Imports Microsoft.VisualBasic.Parallel.Tasks |
45 | |
46 | Namespace Parallel |
47 | |
48 | Public Module TimeOutAPI |
49 | |
50 | ''' <summary> |
51 | ''' The returns value of TRUE represent of the target operation has been time out.(返回真,表示操作超时) |
52 | ''' </summary> |
53 | ''' <typeparam name="T"></typeparam> |
54 | ''' <typeparam name="TOut"></typeparam> |
55 | ''' <param name="handle"></param> |
56 | ''' <param name="Out"></param> |
57 | ''' <param name="TimeOut">The time unit of this parameter is second.(单位为秒)</param> |
58 | ''' <returns></returns> |
59 | ''' <remarks></remarks> |
60 | ''' |
61 | <Extension> |
62 | Public Function OperationTimeOut(Of T, TOut)(handle As Func(Of T, TOut), [In] As T, ByRef Out As TOut, TimeOut As Double) As Boolean |
63 | Dim invoke As New __backgroundTask(Of TOut)(Function() handle([In])) |
64 | Dim i As Integer |
65 | |
66 | TimeOut = TimeOut * 1000 |
67 | invoke.Start() |
68 | |
69 | Do While i < TimeOut |
70 | If invoke.TaskComplete Then |
71 | Out = invoke.Value |
72 | Return False |
73 | End If |
74 | |
75 | i += 1 |
76 | Call Threading.Thread.Sleep(1) |
77 | Loop |
78 | |
79 | Call invoke.Abort() |
80 | |
81 | Return True |
82 | End Function |
83 | |
84 | ''' <summary> |
85 | ''' |
86 | ''' </summary> |
87 | ''' <typeparam name="T"></typeparam> |
88 | ''' <param name="handle"></param> |
89 | ''' <param name="Out"></param> |
90 | ''' <param name="TimeOut">The time unit of this parameter is second.(单位为秒)</param> |
91 | ''' <returns></returns> |
92 | ''' |
93 | <Extension> |
94 | Public Function OperationTimeOut(Of T)(handle As Func(Of T), ByRef Out As T, TimeOut As Double) As Boolean |
95 | Return OperationTimeOut(Of Boolean, T)(Function(b) handle(), True, Out, TimeOut) |
96 | End Function |
97 | |
98 | ''' <summary> |
99 | ''' |
100 | ''' </summary> |
101 | ''' <param name="handle"></param> |
102 | ''' <param name="TimeOut">The time unit of this parameter is second.(单位为秒)</param> |
103 | ''' <returns></returns> |
104 | ''' |
105 | <Extension> |
106 | Public Function OperationTimeOut(handle As Action, TimeOut As Double) As Boolean |
107 | Dim invoke As Func(Of Boolean, Boolean) = |
108 | Function(b) As Boolean |
109 | Call handle() |
110 | Return True |
111 | End Function |
112 | Return OperationTimeOut(invoke, True, True, TimeOut) |
113 | End Function |
114 | End Module |
115 | End Namespace |