ConcurrentExclusiveSchedulerPair Konstruktoren

Definition

Namespace:

System.Threading.Tasks

Assembly:

System.Threading.Tasks.dll

Assembly:

System.Runtime.dll

Assembly:

mscorlib.dll

Assembly:

netstandard.dll

Initialisiert eine neue Instanz der ConcurrentExclusiveSchedulerPair-Klasse.

Überlädt

ConcurrentExclusiveSchedulerPair()	Initialisiert eine neue Instanz der ConcurrentExclusiveSchedulerPair-Klasse.
ConcurrentExclusiveSchedulerPair(TaskScheduler)	Initialisiert eine neue Instanz der ConcurrentExclusiveSchedulerPair-Klasse, die auf den angegebenen Planer abzielt.
ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32)	Initialisiert eine neue Instanz der ConcurrentExclusiveSchedulerPair-Klasse für den angegebenen Planer mit einer maximalen Parallelitätsebene.
ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32, Int32)	Initialisiert eine neue Instanz der ConcurrentExclusiveSchedulerPair-Klasse für den angegebenen Planer mit einer maximalen Parallelitätsebene und einer maximalen Anzahl von geplanten Aufgaben, die als Einheit verarbeitet werden können.

ConcurrentExclusiveSchedulerPair()

Initialisiert eine neue Instanz der ConcurrentExclusiveSchedulerPair-Klasse.

public:
 ConcurrentExclusiveSchedulerPair();

public ConcurrentExclusiveSchedulerPair ();

Public Sub New ()

Beispiele

Das folgende Beispiel zeigt die Verwendung des ConcurrentExclusiveSchedulerPair Konstruktors zum Erstellen eines neuen ConcurrentExclusiveSchedulerPair Objekts. Dieses Codebeispiel ist Teil eines größeren Beispiels für das How to: Specify a Task Scheduler in a Dataflow Block article.

// 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)

Initialisiert eine neue Instanz der ConcurrentExclusiveSchedulerPair-Klasse, die auf den angegebenen Planer abzielt.

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)

Parameter

taskScheduler

TaskScheduler

Der Zielplaner, auf dem dieses Paar ausgeführt werden soll.

ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32)

Initialisiert eine neue Instanz der ConcurrentExclusiveSchedulerPair-Klasse für den angegebenen Planer mit einer maximalen Parallelitätsebene.

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)

Parameter

taskScheduler

TaskScheduler

Der Zielplaner, auf dem dieses Paar ausgeführt werden soll.

maxConcurrencyLevel

Int32

Die maximale Anzahl von Tasks, die gleichzeitig ausgeführt werden.

ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32, Int32)

Initialisiert eine neue Instanz der ConcurrentExclusiveSchedulerPair-Klasse für den angegebenen Planer mit einer maximalen Parallelitätsebene und einer maximalen Anzahl von geplanten Aufgaben, die als Einheit verarbeitet werden können.

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)

Parameter

taskScheduler

TaskScheduler

Der Zielplaner, auf dem dieses Paar ausgeführt werden soll.

maxConcurrencyLevel

Int32

Die maximale Anzahl von Tasks, die gleichzeitig ausgeführt werden.

maxItemsPerTask

Int32

Die maximale Anzahl auszuführender Tasks für jeden zugrunde liegenden geplanten Task, der von dem Paar verwendet wird.