116 lines
3.9 KiB
VB.net
116 lines
3.9 KiB
VB.net
#Region "Microsoft.VisualBasic::8692c0dfaacf8f0e842aa47da86c0416, Microsoft.VisualBasic.Core\ApplicationServices\Parallel\OperationTimeOut.vb"
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' Author:
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'
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' asuka (amethyst.asuka@gcmodeller.org)
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' xie (genetics@smrucc.org)
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' xieguigang (xie.guigang@live.com)
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'
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' Copyright (c) 2018 GPL3 Licensed
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'
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'
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' GNU GENERAL PUBLIC LICENSE (GPL3)
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'
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'
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' This program is free software: you can redistribute it and/or modify
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' it under the terms of the GNU General Public License as published by
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' the Free Software Foundation, either version 3 of the License, or
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' (at your option) any later version.
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'
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' This program is distributed in the hope that it will be useful,
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' but WITHOUT ANY WARRANTY; without even the implied warranty of
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' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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' GNU General Public License for more details.
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'
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' You should have received a copy of the GNU General Public License
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' along with this program. If not, see <http://www.gnu.org/licenses/>.
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' /********************************************************************************/
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' Summaries:
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' Module TimeOutAPI
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'
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' Function: (+3 Overloads) OperationTimeOut
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'
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'
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' /********************************************************************************/
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#End Region
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Imports System.Runtime.CompilerServices
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Imports Microsoft.VisualBasic.Parallel.Tasks
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Namespace Parallel
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Public Module TimeOutAPI
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''' <summary>
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''' The returns value of TRUE represent of the target operation has been time out.(返回真，表示操作超时)
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''' </summary>
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''' <typeparam name="T"></typeparam>
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''' <typeparam name="TOut"></typeparam>
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''' <param name="handle"></param>
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''' <param name="Out"></param>
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''' <param name="TimeOut">The time unit of this parameter is second.(单位为秒)</param>
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''' <returns></returns>
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''' <remarks></remarks>
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'''
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<Extension>
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Public Function OperationTimeOut(Of T, TOut)(handle As Func(Of T, TOut), [In] As T, ByRef Out As TOut, TimeOut As Double) As Boolean
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Dim invoke As New __backgroundTask(Of TOut)(Function() handle([In]))
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Dim i As Integer
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TimeOut = TimeOut * 1000
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invoke.Start()
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Do While i < TimeOut
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If invoke.TaskComplete Then
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Out = invoke.Value
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Return False
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End If
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i += 1
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Call Threading.Thread.Sleep(1)
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Loop
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Call invoke.Abort()
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Return True
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End Function
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''' <summary>
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'''
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''' </summary>
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''' <typeparam name="T"></typeparam>
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''' <param name="handle"></param>
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''' <param name="Out"></param>
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''' <param name="TimeOut">The time unit of this parameter is second.(单位为秒)</param>
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''' <returns></returns>
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'''
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<Extension>
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Public Function OperationTimeOut(Of T)(handle As Func(Of T), ByRef Out As T, TimeOut As Double) As Boolean
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Return OperationTimeOut(Of Boolean, T)(Function(b) handle(), True, Out, TimeOut)
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End Function
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''' <summary>
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'''
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''' </summary>
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''' <param name="handle"></param>
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''' <param name="TimeOut">The time unit of this parameter is second.(单位为秒)</param>
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''' <returns></returns>
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'''
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<Extension>
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Public Function OperationTimeOut(handle As Action, TimeOut As Double) As Boolean
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Dim invoke As Func(Of Boolean, Boolean) =
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Function(b) As Boolean
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Call handle()
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Return True
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End Function
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Return OperationTimeOut(invoke, True, True, TimeOut)
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End Function
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End Module
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End Namespace
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