本文整理汇总了VB.NET中System.Threading.WaitHandle类的典型用法代码示例。如果您正苦于以下问题:VB.NET WaitHandle类的具体用法?VB.NET WaitHandle怎么用?VB.NET WaitHandle使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了WaitHandle类的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的VB.NET代码示例。
示例1: Main
' 导入命名空间
Imports System.Threading
NotInheritable Public Class App
' Define an array with two AutoResetEvent WaitHandles.
Private Shared waitHandles() As WaitHandle = _
{New AutoResetEvent(False), New AutoResetEvent(False)}
' Define a random number generator for testing.
Private Shared r As New Random()
<MTAThreadAttribute> _
Public Shared Sub Main()
' Queue two tasks on two different threads;
' wait until all tasks are completed.
Dim dt As DateTime = DateTime.Now
Console.WriteLine("Main thread is waiting for BOTH tasks to complete.")
ThreadPool.QueueUserWorkItem(AddressOf DoTask, waitHandles(0))
ThreadPool.QueueUserWorkItem(AddressOf DoTask, waitHandles(1))
WaitHandle.WaitAll(waitHandles)
' The time shown below should match the longest task.
Console.WriteLine("Both tasks are completed (time waited={0})", _
(DateTime.Now - dt).TotalMilliseconds)
' Queue up two tasks on two different threads;
' wait until any tasks are completed.
dt = DateTime.Now
Console.WriteLine()
Console.WriteLine("The main thread is waiting for either task to complete.")
ThreadPool.QueueUserWorkItem(AddressOf DoTask, waitHandles(0))
ThreadPool.QueueUserWorkItem(AddressOf DoTask, waitHandles(1))
Dim index As Integer = WaitHandle.WaitAny(waitHandles)
' The time shown below should match the shortest task.
Console.WriteLine("Task {0} finished first (time waited={1}).", _
index + 1,(DateTime.Now - dt).TotalMilliseconds)
End Sub
Shared Sub DoTask(ByVal state As [Object])
Dim are As AutoResetEvent = CType(state, AutoResetEvent)
Dim time As Integer = 1000 * r.Next(2, 10)
Console.WriteLine("Performing a task for {0} milliseconds.", time)
Thread.Sleep(time)
are.Set()
End Sub
End Class
开发者ID:VB.NET开发者,项目名称:System.Threading,代码行数:47,代码来源:WaitHandle 输出:
Main thread is waiting for BOTH tasks to complete.
Performing a task for 7000 milliseconds.
Performing a task for 4000 milliseconds.
Both tasks are completed (time waited=7064.8052)
The main thread is waiting for either task to complete.
Performing a task for 2000 milliseconds.
Performing a task for 2000 milliseconds.
Task 1 finished first (time waited=2000.6528).
注:本文中的System.Threading.WaitHandle类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。 |
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