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GCNotificationStatus Enumeración

Definición

Proporciona información sobre el registro actual para la notificación de la siguiente recolección completa de elementos no utilizados.

public enum class GCNotificationStatus
public enum GCNotificationStatus
[System.Serializable]
public enum GCNotificationStatus
type GCNotificationStatus = 
[<System.Serializable>]
type GCNotificationStatus = 
Public Enum GCNotificationStatus
Herencia
GCNotificationStatus
Atributos

Campos

Canceled 2

El usuario canceló el registro actual.

Failed 1

Error en la notificación por algún motivo.

NotApplicable 4

Este valor puede dar lugar cuando no hay ningún registro actual para una notificación de recolección de elementos no utilizados, o se ha producido un GC completo, pero se ha realizado como gc en segundo plano (es decir, un GC que se ejecuta principalmente simultáneamente con subprocesos de usuario) en lugar de un GC de bloqueo completo. Gc en segundo plano está habilitado de forma predeterminada; deshabilitarla mejora la precisión de la predicción, pero incurre en pausas de GC más grandes.

Succeeded 0

La notificación se realizó correctamente y no se canceló el registro.

Timeout 3

La hora especificada por el parámetro millisecondsTimeout para WaitForFullGCApproach(Int32) o WaitForFullGCComplete(Int32) ha transcurrido.

Ejemplos

En el ejemplo siguiente se obtiene una GCNotificationStatus enumeración del WaitForFullGCApproach método . Si la enumeración devuelve Succeeded, llama al método OnFullGCApproachNotify personalizado para realizar acciones en respuesta a la recolección completa de elementos no utilizados. Este ejemplo de código forma parte de un ejemplo más grande proporcionado para el tema Notificaciones de recolección de elementos no utilizados.

public:
    static void WaitForFullGCProc()
    {
        while (true)
        {
            // CheckForNotify is set to true and false in Main.
            while (checkForNotify)
            {
                // Check for a notification of an approaching collection.
                GCNotificationStatus s = GC::WaitForFullGCApproach();
                if (s == GCNotificationStatus::Succeeded)
                {
                    Console::WriteLine("GC Notifiction raised.");
                    OnFullGCApproachNotify();
                }
                else if (s == GCNotificationStatus::Canceled)
                {
                    Console::WriteLine("GC Notification cancelled.");
                    break;
                }
                else
                {
                    // This can occur if a timeout period
                    // is specified for WaitForFullGCApproach(Timeout)
                    // or WaitForFullGCComplete(Timeout)
                    // and the time out period has elapsed.
                    Console::WriteLine("GC Notification not applicable.");
                    break;
                }

                // Check for a notification of a completed collection.
                s = GC::WaitForFullGCComplete();
                if (s == GCNotificationStatus::Succeeded)
                {
                    Console::WriteLine("GC Notification raised.");
                    OnFullGCCompleteEndNotify();
                }
                else if (s == GCNotificationStatus::Canceled)
                {
                    Console::WriteLine("GC Notification cancelled.");
                    break;
                }
                else
                {
                    // Could be a time out.
                    Console::WriteLine("GC Notification not applicable.");
                    break;
                }
            }


            Thread::Sleep(500);
            // FinalExit is set to true right before
            // the main thread cancelled notification.
            if (finalExit)
            {
                break;
            }
        }
    }
public static void WaitForFullGCProc()
{
    while (true)
    {
        // CheckForNotify is set to true and false in Main.
        while (checkForNotify)
        {
            // Check for a notification of an approaching collection.
            GCNotificationStatus s = GC.WaitForFullGCApproach();
            if (s == GCNotificationStatus.Succeeded)
            {
                Console.WriteLine("GC Notification raised.");
                OnFullGCApproachNotify();
            }
            else if (s == GCNotificationStatus.Canceled)
            {
                Console.WriteLine("GC Notification cancelled.");
                break;
            }
            else
            {
                // This can occur if a timeout period
                // is specified for WaitForFullGCApproach(Timeout)
                // or WaitForFullGCComplete(Timeout)
                // and the time out period has elapsed.
                Console.WriteLine("GC Notification not applicable.");
                break;
            }

            // Check for a notification of a completed collection.
            GCNotificationStatus status = GC.WaitForFullGCComplete();
            if (status == GCNotificationStatus.Succeeded)
            {
                Console.WriteLine("GC Notification raised.");
                OnFullGCCompleteEndNotify();
            }
            else if (status == GCNotificationStatus.Canceled)
            {
                Console.WriteLine("GC Notification cancelled.");
                break;
            }
            else
            {
                // Could be a time out.
                Console.WriteLine("GC Notification not applicable.");
                break;
            }
        }

        Thread.Sleep(500);
        // FinalExit is set to true right before
        // the main thread cancelled notification.
        if (finalExit)
        {
            break;
        }
    }
}
let waitForFullGCProc () =
    let mutable broken = false

    while not broken do
        let mutable broken = false
        // CheckForNotify is set to true and false in Main.
        while checkForNotify && not broken do
            // Check for a notification of an approaching collection.
            match GC.WaitForFullGCApproach() with
            | GCNotificationStatus.Succeeded ->
                printfn "GC Notification raised."
                onFullGCApproachNotify ()
                // Check for a notification of a completed collection.
                match GC.WaitForFullGCComplete() with
                | GCNotificationStatus.Succeeded ->
                    printfn "GC Notification raised."
                    onFullGCCompleteEndNotify ()
                | GCNotificationStatus.Canceled ->
                    printfn "GC Notification cancelled."
                    broken <- true
                | _ ->
                    // Could be a time out.
                    printfn "GC Notification not applicable."
                    broken <- true
            | GCNotificationStatus.Canceled ->
                printfn "GC Notification cancelled."
                broken <- true
            | _ ->
                // This can occur if a timeout period
                // is specified for WaitForFullGCApproach(Timeout)
                // or WaitForFullGCComplete(Timeout)
                // and the time out period has elapsed.
                printfn "GC Notification not applicable."
                broken <- true

        Thread.Sleep 500
        // FinalExit is set to true right before
        // the main thread cancelled notification.
        if finalExit then broken <- true
Public Shared Sub WaitForFullGCProc()

    While True
        ' CheckForNotify is set to true and false in Main.

        While checkForNotify
            ' Check for a notification of an approaching collection.
            Dim s As GCNotificationStatus = GC.WaitForFullGCApproach
            If (s = GCNotificationStatus.Succeeded) Then
                Console.WriteLine("GC Notification raised.")
                OnFullGCApproachNotify()
            ElseIf (s = GCNotificationStatus.Canceled) Then
                Console.WriteLine("GC Notification cancelled.")
                Exit While
            Else
                ' This can occur if a timeout period
                ' is specified for WaitForFullGCApproach(Timeout) 
                ' or WaitForFullGCComplete(Timeout)  
                ' and the time out period has elapsed. 
                Console.WriteLine("GC Notification not applicable.")
                Exit While
            End If

            ' Check for a notification of a completed collection.
            s = GC.WaitForFullGCComplete
            If (s = GCNotificationStatus.Succeeded) Then
                Console.WriteLine("GC Notifiction raised.")
                OnFullGCCompleteEndNotify()
            ElseIf (s = GCNotificationStatus.Canceled) Then
                Console.WriteLine("GC Notification cancelled.")
                Exit While
            Else
                ' Could be a time out.
                Console.WriteLine("GC Notification not applicable.")
                Exit While
            End If

        End While
        Thread.Sleep(500)
        ' FinalExit is set to true right before  
        ' the main thread cancelled notification.
        If finalExit Then
            Exit While
        End If

    End While
End Sub

Comentarios

Use el RegisterForFullGCNotification método para registrarse para una notificación completa de recolección de elementos no utilizados. A continuación, use el WaitForFullGCApproach método o el WaitForFullGCComplete método para devolver una GCNotificationStatus enumeración que contiene el estado de la notificación.

Se aplica a

Consulte también