ConcurrentExclusiveSchedulerPair Constructeurs

Définition

Espace de noms:

System.Threading.Tasks

Assembly:

System.Threading.Tasks.dll

Assembly:

System.Runtime.dll

Assembly:

mscorlib.dll

Assembly:

netstandard.dll

Initialise une nouvelle instance de la classe ConcurrentExclusiveSchedulerPair.

Surcharges

ConcurrentExclusiveSchedulerPair()	Initialise une nouvelle instance de la classe ConcurrentExclusiveSchedulerPair.
ConcurrentExclusiveSchedulerPair(TaskScheduler)	Initialise une nouvelle instance de la classe ConcurrentExclusiveSchedulerPair qui cible le planificateur spécifié.
ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32)	Initialise une nouvelle instance de la classe ConcurrentExclusiveSchedulerPair qui cible le planificateur spécifié avec un niveau de concurrence maximal.
ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32, Int32)	Initialise une nouvelle instance de la classe ConcurrentExclusiveSchedulerPair qui cible le planificateur spécifié avec un niveau de concurrence maximal et un nombre maximal de tâches planifiées qui peuvent être traités en tant qu'unité.

ConcurrentExclusiveSchedulerPair()

Initialise une nouvelle instance de la classe ConcurrentExclusiveSchedulerPair.

public:
 ConcurrentExclusiveSchedulerPair();

public ConcurrentExclusiveSchedulerPair ();

Public Sub New ()

Exemples

L’exemple suivant montre l’utilisation du ConcurrentExclusiveSchedulerPair constructeur pour créer un ConcurrentExclusiveSchedulerPair objet. Cet exemple de code fait partie d’un exemple plus grand fourni pour la procédure : spécifier un planificateur de tâches dans un article de bloc de flux de données .

// Create a ConcurrentExclusiveSchedulerPair object.
// Readers will run on the concurrent part of the scheduler pair.
// The writer will run on the exclusive part of the scheduler pair.
var taskSchedulerPair = new ConcurrentExclusiveSchedulerPair();

// Create an ActionBlock<int> object for each reader CheckBox object.
// Each ActionBlock<int> object represents an action that can read 
// from a resource in parallel to other readers.
// Specifying the concurrent part of the scheduler pair enables the 
// reader to run in parallel to other actions that are managed by 
// that scheduler.
var readerActions =
   from checkBox in new CheckBox[] { checkBox1, checkBox2, checkBox3 }
   select new ActionBlock<int>(milliseconds =>
   {
       // Toggle the check box to the checked state.
       toggleCheckBox.Post(checkBox);

       // Perform the read action. For demonstration, suspend the current
       // thread to simulate a lengthy read operation.
       Thread.Sleep(milliseconds);

       // Toggle the check box to the unchecked state.
       toggleCheckBox.Post(checkBox);
   },
   new ExecutionDataflowBlockOptions
   {
       TaskScheduler = taskSchedulerPair.ConcurrentScheduler
   });

// Create an ActionBlock<int> object for the writer CheckBox object.
// This ActionBlock<int> object represents an action that writes to 
// a resource, but cannot run in parallel to readers.
// Specifying the exclusive part of the scheduler pair enables the 
// writer to run in exclusively with respect to other actions that are 
// managed by the scheduler pair.
var writerAction = new ActionBlock<int>(milliseconds =>
{
    // Toggle the check box to the checked state.
    toggleCheckBox.Post(checkBox4);

    // Perform the write action. For demonstration, suspend the current
    // thread to simulate a lengthy write operation.
    Thread.Sleep(milliseconds);

    // Toggle the check box to the unchecked state.
    toggleCheckBox.Post(checkBox4);
},
new ExecutionDataflowBlockOptions
{
    TaskScheduler = taskSchedulerPair.ExclusiveScheduler
});

// Link the broadcaster to each reader and writer block.
// The BroadcastBlock<T> class propagates values that it 
// receives to all connected targets.
foreach (var readerAction in readerActions)
{
    broadcaster.LinkTo(readerAction);
}
broadcaster.LinkTo(writerAction);

' Create a ConcurrentExclusiveSchedulerPair object.
' Readers will run on the concurrent part of the scheduler pair.
' The writer will run on the exclusive part of the scheduler pair.
Dim taskSchedulerPair = New ConcurrentExclusiveSchedulerPair()

' Create an ActionBlock<int> object for each reader CheckBox object.
' Each ActionBlock<int> object represents an action that can read 
' from a resource in parallel to other readers.
' Specifying the concurrent part of the scheduler pair enables the 
' reader to run in parallel to other actions that are managed by 
' that scheduler.
Dim readerActions = From checkBox In New CheckBox() {checkBox1, checkBox2, checkBox3}
                    Select New ActionBlock(Of Integer)(Sub(milliseconds)
                                                           ' Toggle the check box to the checked state.
                                                           ' Perform the read action. For demonstration, suspend the current
                                                           ' thread to simulate a lengthy read operation.
                                                           ' Toggle the check box to the unchecked state.
                                                           toggleCheckBox.Post(checkBox)
                                                           Thread.Sleep(milliseconds)
                                                           toggleCheckBox.Post(checkBox)
                                                       End Sub, New ExecutionDataflowBlockOptions With {.TaskScheduler = taskSchedulerPair.ConcurrentScheduler})

' Create an ActionBlock<int> object for the writer CheckBox object.
' This ActionBlock<int> object represents an action that writes to 
' a resource, but cannot run in parallel to readers.
' Specifying the exclusive part of the scheduler pair enables the 
' writer to run in exclusively with respect to other actions that are 
' managed by the scheduler pair.
Dim writerAction = New ActionBlock(Of Integer)(Sub(milliseconds)
                                                   ' Toggle the check box to the checked state.
                                                   ' Perform the write action. For demonstration, suspend the current
                                                   ' thread to simulate a lengthy write operation.
                                                   ' Toggle the check box to the unchecked state.
                                                   toggleCheckBox.Post(checkBox4)
                                                   Thread.Sleep(milliseconds)
                                                   toggleCheckBox.Post(checkBox4)
                                               End Sub, New ExecutionDataflowBlockOptions With {.TaskScheduler = taskSchedulerPair.ExclusiveScheduler})

' Link the broadcaster to each reader and writer block.
' The BroadcastBlock<T> class propagates values that it 
' receives to all connected targets.
For Each readerAction In readerActions
    broadcaster.LinkTo(readerAction)
Next readerAction
broadcaster.LinkTo(writerAction)

ConcurrentExclusiveSchedulerPair(TaskScheduler)

Initialise une nouvelle instance de la classe ConcurrentExclusiveSchedulerPair qui cible le planificateur spécifié.

public:
 ConcurrentExclusiveSchedulerPair(System::Threading::Tasks::TaskScheduler ^ taskScheduler);

public ConcurrentExclusiveSchedulerPair (System.Threading.Tasks.TaskScheduler taskScheduler);

new System.Threading.Tasks.ConcurrentExclusiveSchedulerPair : System.Threading.Tasks.TaskScheduler -> System.Threading.Tasks.ConcurrentExclusiveSchedulerPair

Public Sub New (taskScheduler As TaskScheduler)

Paramètres

taskScheduler

TaskScheduler

Planificateur cible sur lequel cette paire doit s'exécuter.

ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32)

Initialise une nouvelle instance de la classe ConcurrentExclusiveSchedulerPair qui cible le planificateur spécifié avec un niveau de concurrence maximal.

public:
 ConcurrentExclusiveSchedulerPair(System::Threading::Tasks::TaskScheduler ^ taskScheduler, int maxConcurrencyLevel);

public ConcurrentExclusiveSchedulerPair (System.Threading.Tasks.TaskScheduler taskScheduler, int maxConcurrencyLevel);

new System.Threading.Tasks.ConcurrentExclusiveSchedulerPair : System.Threading.Tasks.TaskScheduler * int -> System.Threading.Tasks.ConcurrentExclusiveSchedulerPair

Public Sub New (taskScheduler As TaskScheduler, maxConcurrencyLevel As Integer)

Paramètres

taskScheduler

TaskScheduler

Planificateur cible sur lequel cette paire doit s'exécuter.

maxConcurrencyLevel

Int32

Nombre maximal de tâches à exécuter simultanément.

ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32, Int32)

Initialise une nouvelle instance de la classe ConcurrentExclusiveSchedulerPair qui cible le planificateur spécifié avec un niveau de concurrence maximal et un nombre maximal de tâches planifiées qui peuvent être traités en tant qu'unité.

public:
 ConcurrentExclusiveSchedulerPair(System::Threading::Tasks::TaskScheduler ^ taskScheduler, int maxConcurrencyLevel, int maxItemsPerTask);

public ConcurrentExclusiveSchedulerPair (System.Threading.Tasks.TaskScheduler taskScheduler, int maxConcurrencyLevel, int maxItemsPerTask);

new System.Threading.Tasks.ConcurrentExclusiveSchedulerPair : System.Threading.Tasks.TaskScheduler * int * int -> System.Threading.Tasks.ConcurrentExclusiveSchedulerPair

Public Sub New (taskScheduler As TaskScheduler, maxConcurrencyLevel As Integer, maxItemsPerTask As Integer)

Paramètres

taskScheduler

TaskScheduler

Planificateur cible sur lequel cette paire doit s'exécuter.

maxConcurrencyLevel

Int32

Nombre maximal de tâches à exécuter simultanément.

maxItemsPerTask

Int32

Nombre maximal de tâches à traiter pour chaque tâche planifiée sous-jacente utilisée par la paire.