Mega Code Archive
Thread Pool
<![CDATA[
Imports System.Threading
Module Module1
Sub TaskA(ByVal state As Object)
Dim I As Integer
For I = 0 To 250
System.Console.Write("A")
Next
Thread.Sleep(3000)
CType(state, AutoResetEvent).Set()
End Sub
Sub TaskB(ByVal state As Object)
Dim I As Integer
For I = 0 To 250
System.Console.Write("B")
Next
Thread.Sleep(3000)
CType(state, AutoResetEvent).Set()
End Sub
Sub TaskC(ByVal state As Object)
Dim I As Integer
For I = 0 To 250
System.Console.Write("C")
Next
Thread.Sleep(3000)
CType(state, AutoResetEvent).Set()
End Sub
Sub Main()
Dim AIsDone As New AutoResetEvent(False)
Dim BIsDone As New AutoResetEvent(False)
Dim CIsDone As New AutoResetEvent(False)
ThreadPool.QueueUserWorkItem(New WaitCallback(AddressOf TaskA), AIsDone)
ThreadPool.QueueUserWorkItem(New WaitCallback(AddressOf TaskB), BIsDone)
ThreadPool.QueueUserWorkItem(New WaitCallback(AddressOf TaskC), CIsDone)
Dim ThreadCount, ThreadPorts As Integer
ThreadPool.GetAvailableThreads(ThreadCount, ThreadPorts)
Console.WriteLine("Thread pool size {0}", ThreadCount)
Console.WriteLine("Waiting for asynchronous threads to complete.")
AIsDone.WaitOne()
Console.WriteLine("A is done")
BIsDone.WaitOne()
Console.WriteLine("B is done")
CIsDone.WaitOne()
Console.WriteLine("C is done")
End Sub
End Module
Thread pool size 25
Waiting for asynchronous threads to complete.
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
BBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCA is done
B is done
C is done
]]>