Thread.Interrupt Méthode

Définition

Espace de noms:
System.Threading
Assembly:
mscorlib.dll
Assembly:
netstandard.dll

Interrompt un thread qui se trouve dans l’état du WaitSleepJoin thread.

public:
 void Interrupt();
public void Interrupt();
member this.Interrupt : unit -> unit
Public Sub Interrupt ()

Exceptions

SecurityException

L’appelant n’a pas le bon SecurityPermission.

Exemples

L’exemple de code suivant montre le comportement d’un thread en cours d’exécution lorsqu’il est interrompu et est ensuite bloqué.

using System;
using System.Security.Permissions;
using System.Threading;

class ThreadInterrupt
{
    static void Main()
    {
        StayAwake stayAwake = new StayAwake();
        Thread newThread = 
            new Thread(new ThreadStart(stayAwake.ThreadMethod));
        newThread.Start();

        // The following line causes an exception to be thrown 
        // in ThreadMethod if newThread is currently blocked
        // or becomes blocked in the future.
        newThread.Interrupt();
        Console.WriteLine("Main thread calls Interrupt on newThread.");

        // Tell newThread to go to sleep.
        stayAwake.SleepSwitch = true;

        // Wait for newThread to end.
        newThread.Join();
    }
}

class StayAwake
{
    bool sleepSwitch = false;

    public bool SleepSwitch
    {
        set{ sleepSwitch = value; }
    }

    public StayAwake(){}

    public void ThreadMethod()
    {
        Console.WriteLine("newThread is executing ThreadMethod.");
        while(!sleepSwitch)
        {
            // Use SpinWait instead of Sleep to demonstrate the 
            // effect of calling Interrupt on a running thread.
            Thread.SpinWait(10000000);
        }
        try
        {
            Console.WriteLine("newThread going to sleep.");

            // When newThread goes to sleep, it is immediately 
            // woken up by a ThreadInterruptedException.
            Thread.Sleep(Timeout.Infinite);
        }
        catch(ThreadInterruptedException e)
        {
            Console.WriteLine("newThread cannot go to sleep - " +
                "interrupted by main thread.");
        }
    }
}

open System.Threading

type StayAwake() =
    member val SleepSwitch = false with get, set

    member this.ThreadMethod() =
        printfn "newThread is executing ThreadMethod."

        while not this.SleepSwitch do
            // Use SpinWait instead of Sleep to demonstrate the
            // effect of calling Interrupt on a running thread.
            Thread.SpinWait 10000000

        try
            printfn "newThread going to sleep."

            // When newThread goes to sleep, it is immediately
            // woken up by a ThreadInterruptedException.
            Thread.Sleep Timeout.Infinite
        with :? ThreadInterruptedException ->
            printfn "newThread cannot go to sleep - interrupted by main thread."

let stayAwake = StayAwake()
let newThread = Thread stayAwake.ThreadMethod
newThread.Start()

// The following line causes an exception to be thrown
// in ThreadMethod if newThread is currently blocked
// or becomes blocked in the future.
newThread.Interrupt()
printfn "Main thread calls Interrupt on newThread."

// Tell newThread to go to sleep.
stayAwake.SleepSwitch <- true

// Wait for newThread to end.
newThread.Join()

Option Explicit
Option Strict

Imports System.Security.Permissions
Imports System.Threading

Public Class ThreadInterrupt

    <MTAThread> _
    Shared Sub Main()
        Dim stayAwake As New StayAwake()
        Dim newThread As New Thread(AddressOf stayAwake.ThreadMethod)
        newThread.Start()

        ' The following line causes an exception to be thrown 
        ' in ThreadMethod if newThread is currently blocked
        ' or becomes blocked in the future.
        newThread.Interrupt()
        Console.WriteLine("Main thread calls Interrupt on newThread.")

        ' Tell newThread to go to sleep.
        stayAwake.SleepSwitch = True

        ' Wait for newThread to end.
        newThread.Join()
    End Sub

End Class

Public Class StayAwake

    Dim sleepSwitchValue As Boolean = False

    WriteOnly Property SleepSwitch As Boolean
        Set
            sleepSwitchValue = Value
        End Set
    End Property 

    Sub New()
    End Sub

    Sub ThreadMethod()
        Console.WriteLine("newThread is executing ThreadMethod.")
        While Not sleepSwitchValue

            ' Use SpinWait instead of Sleep to demonstrate the 
            ' effect of calling Interrupt on a running thread.
            Thread.SpinWait(10000000)
        End While
        Try
            Console.WriteLine("newThread going to sleep.")

            ' When newThread goes to sleep, it is immediately 
            ' woken up by a ThreadInterruptedException.
            Thread.Sleep(Timeout.Infinite)
        Catch ex As ThreadInterruptedException
            Console.WriteLine("newThread cannot go to " & _
                "sleep - interrupted by main thread.")
        End Try
    End Sub

End Class

Remarques

Si ce thread n’est pas actuellement bloqué dans un état d’attente, de veille ou de jointure, il est interrompu lors du prochain démarrage à bloquer.

ThreadInterruptedException est levée dans le thread interrompu, mais pas tant que les blocs de threads ne sont pas bloqués. Si le thread ne bloque jamais, l’exception n’est jamais levée et le thread peut donc se terminer sans jamais être interrompu.

S’applique à

Voir aussi