Thread.IsThreadPoolThread Eigenschap
Definitie
Belangrijk
Bepaalde informatie heeft betrekking op een voorlopige productversie die aanzienlijk kan worden gewijzigd voordat deze wordt uitgebracht. Microsoft biedt geen enkele expliciete of impliciete garanties met betrekking tot de informatie die hier wordt verstrekt.
Hiermee wordt een waarde opgehaald die aangeeft of een thread deel uitmaakt van de beheerde threadgroep.
public:
property bool IsThreadPoolThread { bool get(); };
public bool IsThreadPoolThread { get; }
member this.IsThreadPoolThread : bool
Public ReadOnly Property IsThreadPoolThread As Boolean
Waarde van eigenschap
true als deze thread deel uitmaakt van de beheerde threadgroep; anders, false.
Voorbeelden
In het volgende codevoorbeeld ziet u hoe u kunt bepalen of een thread afkomstig is uit de threadgroep.
using System;
using System.Threading;
class IsThreadPool
{
static void Main()
{
AutoResetEvent autoEvent = new AutoResetEvent(false);
Thread regularThread =
new Thread(new ThreadStart(ThreadMethod));
regularThread.Start();
ThreadPool.QueueUserWorkItem(new WaitCallback(WorkMethod),
autoEvent);
// Wait for foreground thread to end.
regularThread.Join();
// Wait for background thread to end.
autoEvent.WaitOne();
}
static void ThreadMethod()
{
Console.WriteLine("ThreadOne, executing ThreadMethod, " +
"is {0}from the thread pool.",
Thread.CurrentThread.IsThreadPoolThread ? "" : "not ");
}
static void WorkMethod(object stateInfo)
{
Console.WriteLine("ThreadTwo, executing WorkMethod, " +
"is {0}from the thread pool.",
Thread.CurrentThread.IsThreadPoolThread ? "" : "not ");
// Signal that this thread is finished.
((AutoResetEvent)stateInfo).Set();
}
}
open System.Threading
let threadMethod () =
printfn
$"""ThreadOne, executing ThreadMethod, is {if Thread.CurrentThread.IsThreadPoolThread then
""
else
"not "}from the thread pool."""
let workMethod stateInfo =
printfn
$"""ThreadTwo, executing WorkMethod, is {if Thread.CurrentThread.IsThreadPoolThread then
""
else
"not "}from the thread pool."""
// Signal that this thread is finished.
(unbox<AutoResetEvent> stateInfo).Set() |> ignore
let autoEvent = new AutoResetEvent false
let regularThread = Thread threadMethod
regularThread.Start()
ThreadPool.QueueUserWorkItem(workMethod, autoEvent) |> ignore
// Wait for foreground thread to end.
regularThread.Join()
// Wait for background thread to end.
autoEvent.WaitOne() |> ignore
Option Explicit
Option Strict
Imports System.Threading
Public Class IsThreadPool
<MTAThread> _
Shared Sub Main()
Dim autoEvent As New AutoResetEvent(False)
Dim regularThread As New Thread(AddressOf ThreadMethod)
regularThread.Start()
ThreadPool.QueueUserWorkItem(AddressOf WorkMethod, autoEvent)
' Wait for foreground thread to end.
regularThread.Join()
' Wait for background thread to end.
autoEvent.WaitOne()
End Sub
Shared Sub ThreadMethod()
Console.WriteLine("ThreadOne, executing ThreadMethod, " & _
"is from the thread pool? {0}", _
Thread.CurrentThread.IsThreadPoolThread)
End Sub
Shared Sub WorkMethod(stateInfo As Object)
Console.WriteLine("ThreadTwo, executing WorkMethod, " & _
"is from the thread pool? {0}", _
Thread.CurrentThread.IsThreadPoolThread)
' Signal that this thread is finished.
DirectCast(stateInfo, AutoResetEvent).Set()
End Sub
End Class
Opmerkingen
Zie De beheerde threadgroep voor meer informatie.