Thread.Join Méthode

Définition

Bloque le thread appelant jusqu’à l’arrêt du thread représenté par cette instance.Blocks the calling thread until the thread represented by this instance terminates.

Surcharges

Join()

Bloque le thread appelant jusqu’à ce que le thread représenté par cette instance s’arrête, tout en continuant d’exécuter le pompage COM et SendMessage standard.Blocks the calling thread until the thread represented by this instance terminates, while continuing to perform standard COM and SendMessage pumping.

Join(Int32)

Bloque le thread appelant jusqu'à ce que le thread représenté par cette instance s'arrête ou que la durée spécifiée soit écoulée, tout en continuant d'exécuter le pompage COM et SendMessage standard.Blocks the calling thread until the thread represented by this instance terminates or the specified time elapses, while continuing to perform standard COM and SendMessage pumping.

Join(TimeSpan)

Bloque le thread appelant jusqu'à ce que le thread représenté par cette instance s'arrête ou que la durée spécifiée soit écoulée, tout en continuant d'exécuter le pompage COM et SendMessage standard.Blocks the calling thread until the thread represented by this instance terminates or the specified time elapses, while continuing to perform standard COM and SendMessage pumping.

Join()

Bloque le thread appelant jusqu’à ce que le thread représenté par cette instance s’arrête, tout en continuant d’exécuter le pompage COM et SendMessage standard.Blocks the calling thread until the thread represented by this instance terminates, while continuing to perform standard COM and SendMessage pumping.

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

Exceptions

L’appelant a tenté de joindre un thread dont l’état est Unstarted.The caller attempted to join a thread that is in the Unstarted state.

Le thread est interrompu lors de l’attente.The thread is interrupted while waiting.

Remarques

Join est une méthode de synchronisation qui bloque le thread appelant (autrement dit, le thread qui appelle la méthode) jusqu’à ce que le thread dont la méthode Join est appelée est terminé.Join is a synchronization method that blocks the calling thread (that is, the thread that calls the method) until the thread whose Join method is called has completed. Utilisez cette méthode pour vous assurer qu’un thread a été arrêté.Use this method to ensure that a thread has been terminated. L’appelant se bloque indéfiniment si le thread ne se termine pas.The caller will block indefinitely if the thread does not terminate. Dans l’exemple suivant, le thread Thread1 appelle la méthode Join() de Thread2, ce qui entraîne le blocage de Thread1 jusqu’à ce que Thread2 soit terminé.In the following example, the Thread1 thread calls the Join() method of Thread2, which causes Thread1 to block until Thread2 has completed.

using System;
using System.Threading;

public class Example
{
   static Thread thread1, thread2;
   
   public static void Main()
   {
      thread1 = new Thread(ThreadProc);
      thread1.Name = "Thread1";
      thread1.Start();
      
      thread2 = new Thread(ThreadProc);
      thread2.Name = "Thread2";
      thread2.Start();   
   }

   private static void ThreadProc()
   {
      Console.WriteLine("\nCurrent thread: {0}", Thread.CurrentThread.Name);
      if (Thread.CurrentThread.Name == "Thread1" && 
          thread2.ThreadState != ThreadState.Unstarted)
         thread2.Join();
      
      Thread.Sleep(4000);
      Console.WriteLine("\nCurrent thread: {0}", Thread.CurrentThread.Name);
      Console.WriteLine("Thread1: {0}", thread1.ThreadState);
      Console.WriteLine("Thread2: {0}\n", thread2.ThreadState);
   }
}
// The example displays output like the following:
//       Current thread: Thread1
//       
//       Current thread: Thread2
//       
//       Current thread: Thread2
//       Thread1: WaitSleepJoin
//       Thread2: Running
//       
//       
//       Current thread: Thread1
//       Thread1: Running
//       Thread2: Stopped
Imports System.Threading

Module Example
   Dim thread1, thread2 As Thread

   Public Sub Main()
      thread1 = new Thread(AddressOf ThreadProc)
      thread1.Name = "Thread1"
      thread1.Start()
      
      thread2 = New Thread(AddressOf ThreadProc)
      thread2.Name = "Thread2"
      thread2.Start()   
   End Sub

   Private Sub ThreadProc()
      Console.WriteLine()
      Console.WriteLine("Current thread: {0}", Thread.CurrentThread.Name)
      If (Thread.CurrentThread.Name = "Thread1" And 
          thread2.ThreadState <> ThreadState.Unstarted)
         thread2.Join()
      End If
      Thread.Sleep(4000)
      Console.WriteLine()
      Console.WriteLine("Current thread: {0}", Thread.CurrentThread.Name)
      Console.WriteLine("Thread1: {0}", thread1.ThreadState)
      Console.WriteLine("Thread2: {0}", thread2.ThreadState)
      Console.WriteLine()
   End Sub
End Module
' The example displays output like the following :
'       Current thread: Thread1
'       
'       Current thread: Thread2
'       
'       Current thread: Thread2
'       Thread1: WaitSleepJoin
'       Thread2: Running
'       
'       
'       Current thread: Thread1
'       Thread1: Running
'       Thread2: Stopped

Si le thread s’est déjà terminé lors de l’appel de Join, la méthode est retournée immédiatement.If the thread has already terminated when Join is called, the method returns immediately.

Avertissement

Vous ne devez jamais appeler la méthode Join de l’objet Thread qui représente le thread actuel à partir du thread actuel.You should never call the Join method of the Thread object that represents the current thread from the current thread. Cela provoque le blocage de votre application, car le thread actuel attend lui-même indéfiniment,This causes your app to become unresponsive because the current thread waits upon itself indefinitely,

Cette méthode modifie l’état du thread appelant pour inclure ThreadState.WaitSleepJoin.This method changes the state of the calling thread to include ThreadState.WaitSleepJoin. Vous ne pouvez pas appeler Join sur un thread qui est dans l’État ThreadState.Unstarted.You cannot invoke Join on a thread that is in the ThreadState.Unstarted state.

Voir aussi

Join(Int32)

Bloque le thread appelant jusqu'à ce que le thread représenté par cette instance s'arrête ou que la durée spécifiée soit écoulée, tout en continuant d'exécuter le pompage COM et SendMessage standard.Blocks the calling thread until the thread represented by this instance terminates or the specified time elapses, while continuing to perform standard COM and SendMessage pumping.

public:
 bool Join(int millisecondsTimeout);
public bool Join (int millisecondsTimeout);
member this.Join : int -> bool
Public Function Join (millisecondsTimeout As Integer) As Boolean

Paramètres

millisecondsTimeout
Int32

Nombre de millisecondes à attendre l'arrêt du thread.The number of milliseconds to wait for the thread to terminate.

Retours

true si le thread s'est arrêté ; false s'il ne s'est pas arrêté après l'expiration du délai spécifié par le paramètre millisecondsTimeout.true if the thread has terminated; false if the thread has not terminated after the amount of time specified by the millisecondsTimeout parameter has elapsed.

Exceptions

La valeur de millisecondsTimeout est négative et n’est pas égale à Infinite en millisecondes.The value of millisecondsTimeout is negative and is not equal to Infinite in milliseconds.

Le thread n’a pas été démarré.The thread has not been started.

millisecondsTimeout est inférieur à -1 (Timeout.Infinite).millisecondsTimeout is less than -1 (Timeout.Infinite).

Le thread a été interrompu lors de l’attente.The thread was interrupted while waiting.

Remarques

Join(Int32) est une méthode de synchronisation qui bloque le thread appelant (autrement dit, le thread qui appelle la méthode) jusqu’à ce que le thread dont la méthode Join est appelée est terminé ou que l’intervalle de délai d’attente soit écoulé.Join(Int32) is a synchronization method that blocks the calling thread (that is, the thread that calls the method) until either the thread whose Join method is called has completed or the time-out interval has elapsed. Dans l’exemple suivant, le thread Thread1 appelle la méthode Join() de Thread2, ce qui entraîne le blocage de Thread1 jusqu’à ce que la Thread2 soit terminée ou que 2 secondes se soient écoulées.In the following example, the Thread1 thread calls the Join() method of Thread2, which causes Thread1 to block either until Thread2 has completed or 2 seconds have elapsed.

using System;
using System.Threading;

public class Example
{
   static Thread thread1, thread2;
   
   public static void Main()
   {
      thread1 = new Thread(ThreadProc);
      thread1.Name = "Thread1";
      thread1.Start();
      
      thread2 = new Thread(ThreadProc);
      thread2.Name = "Thread2";
      thread2.Start();   
   }

   private static void ThreadProc()
   {
      Console.WriteLine("\nCurrent thread: {0}", Thread.CurrentThread.Name);
      if (Thread.CurrentThread.Name == "Thread1" && 
          thread2.ThreadState != ThreadState.Unstarted)
         if (thread2.Join(2000))
            Console.WriteLine("Thread2 has termminated.");
         else
            Console.WriteLine("The timeout has elapsed and Thread1 will resume.");   
      
      Thread.Sleep(4000);
      Console.WriteLine("\nCurrent thread: {0}", Thread.CurrentThread.Name);
      Console.WriteLine("Thread1: {0}", thread1.ThreadState);
      Console.WriteLine("Thread2: {0}\n", thread2.ThreadState);
   }
}
// The example displays the following output:
//       Current thread: Thread1
//       
//       Current thread: Thread2
//       The timeout has elapsed and Thread1 will resume.
//       
//       Current thread: Thread2
//       Thread1: WaitSleepJoin
//       Thread2: Running
//       
//       
//       Current thread: Thread1
//       Thread1: Running
//       Thread2: Stopped
Imports System.Threading

Module Example
   Dim thread1, thread2 As Thread

   Public Sub Main()
      thread1 = new Thread(AddressOf ThreadProc)
      thread1.Name = "Thread1"
      thread1.Start()
      
      thread2 = New Thread(AddressOf ThreadProc)
      thread2.Name = "Thread2"
      thread2.Start()   
   End Sub

   Private Sub ThreadProc()
      Console.WriteLine()
      Console.WriteLine("Current thread: {0}", Thread.CurrentThread.Name)
      If (Thread.CurrentThread.Name = "Thread1" And 
          thread2.ThreadState <> ThreadState.Unstarted)
         If thread2.Join(TimeSpan.FromSeconds(2))
            Console.WriteLine("Thread2 has termminated.")
         Else
            Console.WriteLine("The timeout has elapsed and Thread1 will resume.")
         End If      
      End If
      Thread.Sleep(4000)
      Console.WriteLine()
      Console.WriteLine("Current thread: {0}", Thread.CurrentThread.Name)
      Console.WriteLine("Thread1: {0}", thread1.ThreadState)
      Console.WriteLine("Thread2: {0}", thread2.ThreadState)
      Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'       Current thread: Thread1
'       
'       Current thread: Thread2
'       
'       Current thread: Thread2
'       Thread1: WaitSleepJoin
'       Thread2: Running
'       
'       
'       Current thread: Thread1
'       Thread1: Running
'       Thread2: Stopped

Si Timeout.Infinite est spécifié pour le paramètre millisecondsTimeout, cette méthode se comporte de la même façon que la surcharge de la méthode Join(), à l’exception de la valeur de retour.If Timeout.Infinite is specified for the millisecondsTimeout parameter, this method behaves identically to the Join() method overload, except for the return value.

Si le thread s’est déjà terminé lors de l’appel de Join, la méthode est retournée immédiatement.If the thread has already terminated when Join is called, the method returns immediately.

Cette méthode modifie l’état du thread appelant pour inclure ThreadState.WaitSleepJoin.This method changes the state of the calling thread to include ThreadState.WaitSleepJoin. Vous ne pouvez pas appeler Join sur un thread qui est dans l’État ThreadState.Unstarted.You cannot invoke Join on a thread that is in the ThreadState.Unstarted state.

Voir aussi

Join(TimeSpan)

Bloque le thread appelant jusqu'à ce que le thread représenté par cette instance s'arrête ou que la durée spécifiée soit écoulée, tout en continuant d'exécuter le pompage COM et SendMessage standard.Blocks the calling thread until the thread represented by this instance terminates or the specified time elapses, while continuing to perform standard COM and SendMessage pumping.

public:
 bool Join(TimeSpan timeout);
public bool Join (TimeSpan timeout);
member this.Join : TimeSpan -> bool
Public Function Join (timeout As TimeSpan) As Boolean

Paramètres

timeout
TimeSpan

TimeSpan ayant pour valeur la durée à attendre l'arrêt du thread.A TimeSpan set to the amount of time to wait for the thread to terminate.

Retours

true si le thread s'est arrêté ; false s'il ne s'est pas arrêté après l'expiration du délai spécifié par le paramètre timeout.true if the thread terminated; false if the thread has not terminated after the amount of time specified by the timeout parameter has elapsed.

Exceptions

La valeur de timeout est négative et n’est pas égale à Infinite en millisecondes, ou est supérieure à MaxValue millisecondes.The value of timeout is negative and is not equal to Infinite in milliseconds, or is greater than MaxValue milliseconds.

L’appelant a tenté de joindre un thread dont l’état est Unstarted.The caller attempted to join a thread that is in the Unstarted state.

Exemples

L’exemple de code suivant montre comment utiliser une valeur TimeSpan avec la méthode Join.The following code example demonstrates how to use a TimeSpan value with the Join method.

using namespace System;
using namespace System::Threading;

static TimeSpan waitTime = TimeSpan(0,0,1);

ref class Test
{
public:
   static void Work()
   {
      Thread::Sleep( waitTime );
   }

};

int main()
{
   Thread^ newThread = gcnew Thread( gcnew ThreadStart( Test::Work ) );
   newThread->Start();
   if ( newThread->Join( waitTime + waitTime ) )
   {
      Console::WriteLine( "New thread terminated." );
   }
   else
   {
      Console::WriteLine( "Join timed out." );
   }
}
// The example displays the following output:
//        New thread terminated.
using System;
using System.Threading;

class Test
{
    static TimeSpan waitTime = new TimeSpan(0, 0, 1);

    public static void Main() 
    {
        Thread newThread = new Thread(Work);
        newThread.Start();

        if(newThread.Join(waitTime + waitTime)) {
            Console.WriteLine("New thread terminated.");
        }
        else {
            Console.WriteLine("Join timed out.");
        }
    }

    static void Work()
    {
        Thread.Sleep(waitTime);
    }
}
// The example displays the following output:
//        New thread terminated.
Imports System.Threading

Public Module Test
    Dim waitTime As New TimeSpan(0, 0, 1)

    Public Sub Main() 
        Dim newThread As New Thread(AddressOf Work)
        newThread.Start()

        If newThread.Join(waitTime + waitTime) Then
            Console.WriteLine("New thread terminated.")
        Else
            Console.WriteLine("Join timed out.")
        End If
    End Sub

    Private Sub Work()
        Thread.Sleep(waitTime)
    End Sub
End Module
' The example displays the following output:
'       New thread terminated.

Remarques

Join(TimeSpan) est une méthode de synchronisation qui bloque le thread appelant (autrement dit, le thread qui appelle la méthode) jusqu’à ce que le thread dont la méthode Join est appelée est terminé ou que l’intervalle de délai d’attente soit écoulé.Join(TimeSpan) is a synchronization method that blocks the calling thread (that is, the thread that calls the method) until either the thread whose Join method is called has completed or the time-out interval has elapsed. Dans l’exemple suivant, le thread Thread1 appelle la méthode Join() de Thread2, ce qui entraîne le blocage de Thread1 jusqu’à ce que la Thread2 soit terminée ou que 2 secondes se soient écoulées.In the following example, the Thread1 thread calls the Join() method of Thread2, which causes Thread1 to block either until Thread2 has completed or 2 seconds have elapsed.

using System;
using System.Threading;

public class Example
{
   static Thread thread1, thread2;
   
   public static void Main()
   {
      thread1 = new Thread(ThreadProc);
      thread1.Name = "Thread1";
      thread1.Start();
      
      thread2 = new Thread(ThreadProc);
      thread2.Name = "Thread2";
      thread2.Start();   
   }

   private static void ThreadProc()
   {
      Console.WriteLine("\nCurrent thread: {0}", Thread.CurrentThread.Name);
      if (Thread.CurrentThread.Name == "Thread1" && 
          thread2.ThreadState != ThreadState.Unstarted)
         if (thread2.Join(TimeSpan.FromSeconds(2)))
            Console.WriteLine("Thread2 has termminated.");
         else
            Console.WriteLine("The timeout has elapsed and Thread1 will resume.");   
      
      Thread.Sleep(4000);
      Console.WriteLine("\nCurrent thread: {0}", Thread.CurrentThread.Name);
      Console.WriteLine("Thread1: {0}", thread1.ThreadState);
      Console.WriteLine("Thread2: {0}\n", thread2.ThreadState);
   }
}
// The example displays the following output:
//       Current thread: Thread1
//       
//       Current thread: Thread2
//       The timeout has elapsed and Thread1 will resume.
//       
//       Current thread: Thread2
//       Thread1: WaitSleepJoin
//       Thread2: Running
//       
//       
//       Current thread: Thread1
//       Thread1: Running
//       Thread2: Stopped
Imports System.Threading

Module Example
   Dim thread1, thread2 As Thread

   Public Sub Main()
      thread1 = new Thread(AddressOf ThreadProc)
      thread1.Name = "Thread1"
      thread1.Start()
      
      thread2 = New Thread(AddressOf ThreadProc)
      thread2.Name = "Thread2"
      thread2.Start()   
   End Sub

   Private Sub ThreadProc()
      Console.WriteLine()
      Console.WriteLine("Current thread: {0}", Thread.CurrentThread.Name)
      If (Thread.CurrentThread.Name = "Thread1" And 
          thread2.ThreadState <> ThreadState.Unstarted)
         If thread2.Join(2000)
            Console.WriteLine("Thread2 has termminated.")
         Else
            Console.WriteLine("The timeout has elapsed and Thread1 will resume.")
         End If      
      End If
      Thread.Sleep(4000)
      Console.WriteLine()
      Console.WriteLine("Current thread: {0}", Thread.CurrentThread.Name)
      Console.WriteLine("Thread1: {0}", thread1.ThreadState)
      Console.WriteLine("Thread2: {0}", thread2.ThreadState)
      Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'       Current thread: Thread1
'       
'       Current thread: Thread2
'       
'       Current thread: Thread2
'       Thread1: WaitSleepJoin
'       Thread2: Running
'       
'       
'       Current thread: Thread1
'       Thread1: Running
'       Thread2: Stopped

Si Timeout.Infinite est spécifié pour timeout, cette méthode se comporte de la même façon que la surcharge de la méthode Join(), à l’exception de la valeur de retour.If Timeout.Infinite is specified for timeout, this method behaves identically to the Join() method overload, except for the return value.

Si le thread s’est déjà terminé lors de l’appel de Join, la méthode est retournée immédiatement.If the thread has already terminated when Join is called, the method returns immediately.

Cette méthode modifie l’état du thread actuel pour inclure WaitSleepJoin.This method changes the state of the current thread to include WaitSleepJoin. Vous ne pouvez pas appeler Join sur un thread qui est dans l’État ThreadState.Unstarted.You cannot invoke Join on a thread that is in the ThreadState.Unstarted state.

Voir aussi

S’applique à