SynchronizationAttribute Classe

Definizione

public ref class SynchronizationAttribute : System::Runtime::Remoting::Contexts::ContextAttribute, System::Runtime::Remoting::Contexts::IContributeClientContextSink, System::Runtime::Remoting::Contexts::IContributeServerContextSink

[System.AttributeUsage(System.AttributeTargets.Class)]
[System.Serializable]
public class SynchronizationAttribute : System.Runtime.Remoting.Contexts.ContextAttribute, System.Runtime.Remoting.Contexts.IContributeClientContextSink, System.Runtime.Remoting.Contexts.IContributeServerContextSink

[System.AttributeUsage(System.AttributeTargets.Class)]
[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public class SynchronizationAttribute : System.Runtime.Remoting.Contexts.ContextAttribute, System.Runtime.Remoting.Contexts.IContributeClientContextSink, System.Runtime.Remoting.Contexts.IContributeServerContextSink

[System.AttributeUsage(System.AttributeTargets.Class)]
[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
[System.Security.SecurityCritical]
public class SynchronizationAttribute : System.Runtime.Remoting.Contexts.ContextAttribute, System.Runtime.Remoting.Contexts.IContributeClientContextSink, System.Runtime.Remoting.Contexts.IContributeServerContextSink

[<System.AttributeUsage(System.AttributeTargets.Class)>]
[<System.Serializable>]
type SynchronizationAttribute = class
    inherit ContextAttribute
    interface IContributeServerContextSink
    interface IContributeClientContextSink

[<System.AttributeUsage(System.AttributeTargets.Class)>]
[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type SynchronizationAttribute = class
    inherit ContextAttribute
    interface IContributeServerContextSink
    interface IContributeClientContextSink

[<System.AttributeUsage(System.AttributeTargets.Class)>]
[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
[<System.Security.SecurityCritical>]
type SynchronizationAttribute = class
    inherit ContextAttribute
    interface IContributeServerContextSink
    interface IContributeClientContextSink

Public Class SynchronizationAttribute
Inherits ContextAttribute
Implements IContributeClientContextSink, IContributeServerContextSink

Ereditarietà

Object

Attribute

ContextAttribute

SynchronizationAttribute

Attributi

AttributeUsageAttribute SerializableAttribute ComVisibleAttribute SecurityCriticalAttribute

Implementazioni

IContributeClientContextSink IContributeServerContextSink

Esempio

Nell'esempio di codice seguente viene illustrato l'uso di SynchronizationAttribute. Per il codice di esempio completo, vedere l'esempio per la AsyncResult classe .

// Context-bound type with the Synchronization context attribute.

[Synchronization]
public ref class SampleSynchronized: public ContextBoundObject
{
public:

   // A method that does some work, and returns the square of the given number.
   int Square( int i )
   {
      Console::Write( "The hash of the thread executing " );
      Console::WriteLine( "SampleSynchronized::Square is: {0}", Thread::CurrentThread->GetHashCode() );
      return i * i;
   }

};

// Context-bound type with the Synchronization context attribute.
[Synchronization()]
public class SampleSynchronized : ContextBoundObject {

    // A method that does some work, and returns the square of the given number.
    public int Square(int i)  {

        Console.Write("The hash of the thread executing ");
        Console.WriteLine("SampleSynchronized.Square is: {0}",
                             Thread.CurrentThread.GetHashCode());
        return i*i;
    }
}

' Context-bound type with the Synchronization context attribute.
<Synchronization()> Public Class SampleSynchronized
   Inherits ContextBoundObject
   
   ' A method that does some work, and returns the square of the given number.
   Public Function Square(i As Integer) As Integer
      
      Console.Write("The hash of the thread executing ")
      Console.WriteLine("SampleSynchronized.Square is: {0}", Thread.CurrentThread.GetHashCode())
      Return i * i
   End Function 

End Class

Commenti

Quando questo attributo viene applicato a un oggetto, è possibile eseguire un solo thread in tutti i contesti che condividono un'istanza di questa proprietà. Questa operazione viene eseguita contribuendo ai sink che intercettano e serializzano le chiamate in ingresso per i rispettivi contesti. Se la proprietà è contrassegnata per la ripetizione, anche i callout vengono intercettati. L'intercettazione del callout consente ad altri thread in attesa di immettere il dominio di sincronizzazione per ottenere una velocità effettiva massima.