RegisteredWaitHandle 클래스

정의

RegisterWaitForSingleObject(WaitHandle, WaitOrTimerCallback, Object, UInt32, Boolean)을 호출할 때 등록된 핸들을 나타냅니다.Represents a handle that has been registered when calling RegisterWaitForSingleObject(WaitHandle, WaitOrTimerCallback, Object, UInt32, Boolean). 이 클래스는 상속될 수 없습니다.This class cannot be inherited.

public ref class RegisteredWaitHandle sealed : MarshalByRefObject
public ref class RegisteredWaitHandle sealed
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public sealed class RegisteredWaitHandle : MarshalByRefObject
public sealed class RegisteredWaitHandle
public sealed class RegisteredWaitHandle : MarshalByRefObject
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class RegisteredWaitHandle : MarshalByRefObject
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
type RegisteredWaitHandle = class
    inherit MarshalByRefObject
type RegisteredWaitHandle = class
type RegisteredWaitHandle = class
    inherit MarshalByRefObject
[<System.Runtime.InteropServices.ComVisible(true)>]
type RegisteredWaitHandle = class
    inherit MarshalByRefObject
Public NotInheritable Class RegisteredWaitHandle
Inherits MarshalByRefObject
Public NotInheritable Class RegisteredWaitHandle
상속
RegisteredWaitHandle
상속
RegisteredWaitHandle
특성

예제

다음 예제에서는를 사용 하 여 RegisteredWaitHandle 콜백 메서드가 호출 되는 이유를 확인 하 고 대기 핸들이 신호를 받은 후 콜백이 발생 한 경우 작업의 등록을 취소 하는 방법을 보여 줍니다.The following example shows how to use a RegisteredWaitHandle to determine why a callback method is called, and how to unregister a task if the callback occurred because the wait handle was signaled.

또한이 예제에서는 RegisterWaitForSingleObject 지정 된 대기 핸들에 신호를 보낼 때 메서드를 사용 하 여 지정 된 콜백 메서드를 실행 하는 방법을 보여 줍니다.The example also shows how to use the RegisterWaitForSingleObject method to execute a specified callback method when a specified wait handle is signaled. 이 예제에서 콜백 메서드는이 WaitProc 고 대기 핸들은 AutoResetEvent 입니다.In this example, the callback method is WaitProc, and the wait handle is an AutoResetEvent.

예제에서는 TaskInfo 실행 시 콜백에 전달 되는 정보를 포함 하는 클래스를 정의 합니다.The example defines a TaskInfo class to hold the information that is passed to the callback when it executes. 이 예에서는 개체를 만들고 TaskInfo 일부 문자열 데이터를 할당 합니다.The example creates a TaskInfo object and assigns it some string data. RegisteredWaitHandle메서드에 의해 반환 되는는 RegisterWaitForSingleObject Handle TaskInfo 콜백 메서드가에 액세스할 수 있도록 개체의 필드에 할당 됩니다 RegisteredWaitHandle .The RegisteredWaitHandle that is returned by the RegisterWaitForSingleObject method is assigned to the Handle field of the TaskInfo object so that the callback method has access to the RegisteredWaitHandle.

를 콜백 메서드에 전달할 개체로 지정 하는 것 외에도 TaskInfo 메서드를 호출 하면 태스크가 대기 하는가 지정 되 고, RegisterWaitForSingleObject AutoResetEvent WaitOrTimerCallback 콜백 메서드를 나타내는 대리자 WaitProc , 1 초 시간 제한 간격 및 여러 콜백이 지정 됩니다.In addition to specifying TaskInfo as the object to pass to the callback method, the call to the RegisterWaitForSingleObject method specifies the AutoResetEvent that the task will wait for, a WaitOrTimerCallback delegate that represents the WaitProc callback method, a one second time-out interval, and multiple callbacks.

주 스레드가 AutoResetEvent 메서드를 호출 하 여에 신호 Set 를 전달 하면 WaitOrTimerCallback 대리자가 호출 됩니다.When the main thread signals the AutoResetEvent by calling its Set method, the WaitOrTimerCallback delegate is invoked. WaitProc메서드는 RegisteredWaitHandle 시간 초과가 발생 했는지 여부를 테스트 합니다.The WaitProc method tests RegisteredWaitHandle to determine whether a time-out occurred. 대기 핸들이 신호를 받은 후 콜백이 호출 된 경우 WaitProc 메서드는의 등록을 취소 RegisteredWaitHandle 하 고 추가 콜백을 중지 합니다.If the callback was invoked because the wait handle was signaled, the WaitProc method unregisters the RegisteredWaitHandle, stopping additional callbacks. 시간이 초과 되는 경우 작업은 계속 대기 합니다.In the case of a time-out, the task continues to wait. WaitProc메서드는 콘솔에 메시지를 출력 하 여 종료 됩니다.The WaitProc method ends by printing a message to the console.

using namespace System;
using namespace System::Threading;

// TaskInfo contains data that will be passed to the callback
// method.
public ref class TaskInfo
{
public:
   TaskInfo()
   {
      Handle = nullptr;
      OtherInfo = "default";
   }

   RegisteredWaitHandle^ Handle;
   String^ OtherInfo;
};

ref class Example
{
public:

   // The callback method executes when the registered wait times out,
   // or when the WaitHandle (in this case AutoResetEvent) is signaled.
   // WaitProc unregisters the WaitHandle the first time the event is 
   // signaled.
   static void WaitProc( Object^ state, bool timedOut )
   {
      
      // The state Object must be cast to the correct type, because the
      // signature of the WaitOrTimerCallback delegate specifies type
      // Object.
      TaskInfo^ ti = static_cast<TaskInfo^>(state);
      String^ cause = "TIMED OUT";
      if (  !timedOut )
      {
         cause = "SIGNALED";
         
         // If the callback method executes because the WaitHandle is
         // signaled, stop future execution of the callback method
         // by unregistering the WaitHandle.
         if ( ti->Handle != nullptr )
                  ti->Handle->Unregister( nullptr );
      }

      Console::WriteLine( "WaitProc( {0}) executes on thread {1}; cause = {2}.", ti->OtherInfo, Thread::CurrentThread->GetHashCode(), cause );
   }

};

int main()
{
   
   // The main thread uses AutoResetEvent to signal the
   // registered wait handle, which executes the callback
   // method.
   AutoResetEvent^ ev = gcnew AutoResetEvent( false );
   TaskInfo^ ti = gcnew TaskInfo;
   ti->OtherInfo = "First task";
   
   // The TaskInfo for the task includes the registered wait
   // handle returned by RegisterWaitForSingleObject.  This
   // allows the wait to be terminated when the object has
   // been signaled once (see WaitProc).
   ti->Handle = ThreadPool::RegisterWaitForSingleObject( ev, gcnew WaitOrTimerCallback( Example::WaitProc ), ti, 1000, false );
   
   // The main thread waits three seconds, to demonstrate the
   // time-outs on the queued thread, and then signals.
   Thread::Sleep( 3100 );
   Console::WriteLine( "Main thread signals." );
   ev->Set();
   
   // The main thread sleeps, which should give the callback
   // method time to execute.  If you comment out this line, the
   // program usually ends before the ThreadPool thread can execute.
   Thread::Sleep( 1000 );
   
   // If you start a thread yourself, you can wait for it to end
   // by calling Thread::Join.  This option is not available with 
   // thread pool threads.
   return 0;
}

using System;
using System.Threading;

// TaskInfo contains data that will be passed to the callback
// method.
public class TaskInfo {
    public RegisteredWaitHandle Handle = null;
    public string OtherInfo = "default";
}

public class Example {
    public static void Main(string[] args) {
        // The main thread uses AutoResetEvent to signal the
        // registered wait handle, which executes the callback
        // method.
        AutoResetEvent ev = new AutoResetEvent(false);

        TaskInfo ti = new TaskInfo();
        ti.OtherInfo = "First task";
        // The TaskInfo for the task includes the registered wait
        // handle returned by RegisterWaitForSingleObject.  This
        // allows the wait to be terminated when the object has
        // been signaled once (see WaitProc).
        ti.Handle = ThreadPool.RegisterWaitForSingleObject(
            ev,
            new WaitOrTimerCallback(WaitProc),
            ti,
            1000,
            false
        );

        // The main thread waits three seconds, to demonstrate the
        // time-outs on the queued thread, and then signals.
        Thread.Sleep(3100);
        Console.WriteLine("Main thread signals.");
        ev.Set();

        // The main thread sleeps, which should give the callback
        // method time to execute.  If you comment out this line, the
        // program usually ends before the ThreadPool thread can execute.
        Thread.Sleep(1000);
        // If you start a thread yourself, you can wait for it to end
        // by calling Thread.Join.  This option is not available with 
        // thread pool threads.
    }
   
    // The callback method executes when the registered wait times out,
    // or when the WaitHandle (in this case AutoResetEvent) is signaled.
    // WaitProc unregisters the WaitHandle the first time the event is 
    // signaled.
    public static void WaitProc(object state, bool timedOut) {
        // The state object must be cast to the correct type, because the
        // signature of the WaitOrTimerCallback delegate specifies type
        // Object.
        TaskInfo ti = (TaskInfo) state;

        string cause = "TIMED OUT";
        if (!timedOut) {
            cause = "SIGNALED";
            // If the callback method executes because the WaitHandle is
            // signaled, stop future execution of the callback method
            // by unregistering the WaitHandle.
            if (ti.Handle != null)
                ti.Handle.Unregister(null);
        } 

        Console.WriteLine("WaitProc( {0} ) executes on thread {1}; cause = {2}.",
            ti.OtherInfo, 
            Thread.CurrentThread.GetHashCode().ToString(), 
            cause
        );
    }
}
Imports System.Threading

' TaskInfo contains data that will be passed to the callback
' method.
Public Class TaskInfo
    public Handle As RegisteredWaitHandle = Nothing
    public OtherInfo As String = "default"
End Class

Public Class Example

    <MTAThread> _
    Public Shared Sub Main()
        ' The main thread uses AutoResetEvent to signal the
        ' registered wait handle, which executes the callback
        ' method.
        Dim ev As New AutoResetEvent(false)

        Dim ti As New TaskInfo()
        ti.OtherInfo = "First task"
        ' The TaskInfo for the task includes the registered wait
        ' handle returned by RegisterWaitForSingleObject.  This
        ' allows the wait to be terminated when the object has
        ' been signaled once (see WaitProc).
        ti.Handle = ThreadPool.RegisterWaitForSingleObject( _
            ev, _
            New WaitOrTimerCallback(AddressOf WaitProc), _
            ti, _
            1000, _
            false _
        )

        ' The main thread waits about three seconds, to demonstrate 
        ' the time-outs on the queued task, and then signals.
        Thread.Sleep(3100)
        Console.WriteLine("Main thread signals.")
        ev.Set()

        ' The main thread sleeps, which should give the callback
        ' method time to execute.  If you comment out this line, the
        ' program usually ends before the ThreadPool thread can execute.
        Thread.Sleep(1000)
        ' If you start a thread yourself, you can wait for it to end
        ' by calling Thread.Join.  This option is not available with 
        ' thread pool threads.
    End Sub
   
    ' The callback method executes when the registered wait times out,
    ' or when the WaitHandle (in this case AutoResetEvent) is signaled.
    ' WaitProc unregisters the WaitHandle the first time the event is 
    ' signaled.
    Public Shared Sub WaitProc(state As Object, timedOut As Boolean)
        ' The state object must be cast to the correct type, because the
        ' signature of the WaitOrTimerCallback delegate specifies type
        ' Object.
        Dim ti As TaskInfo = CType(state, TaskInfo)

        Dim cause As String = "TIMED OUT"
        If Not timedOut Then
            cause = "SIGNALED"
            ' If the callback method executes because the WaitHandle is
            ' signaled, stop future execution of the callback method
            ' by unregistering the WaitHandle.
            If Not ti.Handle Is Nothing Then
                ti.Handle.Unregister(Nothing)
            End If
        End If 

        Console.WriteLine("WaitProc( {0} ) executes on thread {1}; cause = {2}.", _
            ti.OtherInfo, _
            Thread.CurrentThread.GetHashCode().ToString(), _
            cause _
        )
    End Sub
End Class

메서드

CreateObjRef(Type)

원격 개체와 통신하는 데 사용되는 프록시 생성에 필요한 모든 관련 정보가 들어 있는 개체를 만듭니다.Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

(다음에서 상속됨 MarshalByRefObject)
Equals(Object)

지정된 개체가 현재 개체와 같은지 확인합니다.Determines whether the specified object is equal to the current object.

(다음에서 상속됨 Object)
Finalize()

가비지 컬렉션이 회수하기 전에 개체가 리소스를 해제하고 다른 정리 작업을 수행할 수 있게 합니다.Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.

GetHashCode()

기본 해시 함수로 작동합니다.Serves as the default hash function.

(다음에서 상속됨 Object)
GetLifetimeService()
사용되지 않습니다.

이 인스턴스의 수명 정책을 제어하는 현재의 수명 서비스 개체를 검색합니다.Retrieves the current lifetime service object that controls the lifetime policy for this instance.

(다음에서 상속됨 MarshalByRefObject)
GetType()

현재 인스턴스의 Type을 가져옵니다.Gets the Type of the current instance.

(다음에서 상속됨 Object)
InitializeLifetimeService()
사용되지 않습니다.

이 인스턴스의 수명 정책을 제어하는 수명 서비스 개체를 가져옵니다.Obtains a lifetime service object to control the lifetime policy for this instance.

(다음에서 상속됨 MarshalByRefObject)
MemberwiseClone()

현재 Object의 단순 복사본을 만듭니다.Creates a shallow copy of the current Object.

(다음에서 상속됨 Object)
MemberwiseClone(Boolean)

현재 MarshalByRefObject 개체의 단순 복사본을 만듭니다.Creates a shallow copy of the current MarshalByRefObject object.

(다음에서 상속됨 MarshalByRefObject)
ToString()

현재 개체를 나타내는 문자열을 반환합니다.Returns a string that represents the current object.

(다음에서 상속됨 Object)
Unregister(WaitHandle)

RegisterWaitForSingleObject(WaitHandle, WaitOrTimerCallback, Object, UInt32, Boolean) 메서드에서 발생한 등록된 대기 작업을 취소합니다.Cancels a registered wait operation issued by the RegisterWaitForSingleObject(WaitHandle, WaitOrTimerCallback, Object, UInt32, Boolean) method.

적용 대상

스레드 보안

이 형식은 스레드로부터 안전합니다.This type is thread safe.