Thread.Interrupt Metoda
Definicja
Ważne
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Przerywa wątek, który jest w WaitSleepJoin stanie wątku.
public:
void Interrupt();
public void Interrupt ();
member this.Interrupt : unit -> unit
Public Sub Interrupt ()
Wyjątki
Wywołujący nie ma SecurityPermission odpowiedniego .
Przykłady
Poniższy przykład kodu pokazuje zachowanie uruchomionego wątku, gdy zostanie przerwany, a następnie zostanie zablokowany.
using namespace System;
using namespace System::Security::Permissions;
using namespace System::Threading;
ref class StayAwake
{
private:
bool sleepSwitch;
public:
property bool SleepSwitch
{
void set( bool value )
{
sleepSwitch = value;
}
}
StayAwake()
{
sleepSwitch = false;
}
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." );
}
}
};
int main()
{
StayAwake^ stayAwake = gcnew StayAwake;
Thread^ newThread = gcnew Thread( gcnew ThreadStart( stayAwake, &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." );
// Then tell newThread to go to sleep.
stayAwake->SleepSwitch = true;
// Wait for newThread to end.
newThread->Join();
}
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.");
}
}
}
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
Uwagi
Jeśli ten wątek nie jest obecnie zablokowany w stanie oczekiwania, uśpienia lub dołączenia, zostanie przerwany, gdy następnym razem zacznie blokować.
ThreadInterruptedException jest zgłaszany w przerwanym wątku, ale nie dopóki wątek nie zostanie blokowany. Jeśli wątek nigdy nie blokuje, wyjątek nigdy nie jest zgłaszany i w związku z tym wątek może zostać ukończony bez przerywania.