ConcurrentExclusiveSchedulerPair Konstruktory

Definice

Obor názvů:

System.Threading.Tasks

Sestavení:

System.Threading.Tasks.dll

Sestavení:

System.Runtime.dll

Sestavení:

mscorlib.dll

Sestavení:

netstandard.dll

Inicializuje novou instanci ConcurrentExclusiveSchedulerPair třídy.

Přetížení

ConcurrentExclusiveSchedulerPair()	Inicializuje novou instanci ConcurrentExclusiveSchedulerPair třídy.
ConcurrentExclusiveSchedulerPair(TaskScheduler)	Inicializuje novou instanci ConcurrentExclusiveSchedulerPair třídy, která cílí na zadaný plánovač.
ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32)	Inicializuje novou instanci ConcurrentExclusiveSchedulerPair třídy, která cílí na zadaný plánovač s maximální úrovní souběžnosti.
ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32, Int32)	Inicializuje novou instanci ConcurrentExclusiveSchedulerPair třídy, která cílí na zadaný plánovač s maximální úrovní souběžnosti a maximální počet naplánovaných úkolů, které mohou být zpracovány jako jednotka.

ConcurrentExclusiveSchedulerPair()

Inicializuje novou instanci ConcurrentExclusiveSchedulerPair třídy.

public:
 ConcurrentExclusiveSchedulerPair();

public ConcurrentExclusiveSchedulerPair ();

Public Sub New ()

Příklady

Následující příklad ukazuje použití konstruktoru ConcurrentExclusiveSchedulerPair k vytvoření nového ConcurrentExclusiveSchedulerPair objektu. Tento příklad kódu je součástí rozsáhlejšího příkladu uvedeného v článku Postupy: Určení plánovače úloh v článku Blok toku dat .

// 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)

Inicializuje novou instanci ConcurrentExclusiveSchedulerPair třídy, která cílí na zadaný plánovač.

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)

Parametry

taskScheduler

TaskScheduler

Cílový plánovač, na kterém se má tento pár spustit.

ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32)

Inicializuje novou instanci ConcurrentExclusiveSchedulerPair třídy, která cílí na zadaný plánovač s maximální úrovní souběžnosti.

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)

Parametry

taskScheduler

TaskScheduler

Cílový plánovač, na kterém se má tento pár spustit.

maxConcurrencyLevel

Int32

Maximální počet úloh, které se mají spustit souběžně.

ConcurrentExclusiveSchedulerPair(TaskScheduler, Int32, Int32)

Inicializuje novou instanci ConcurrentExclusiveSchedulerPair třídy, která cílí na zadaný plánovač s maximální úrovní souběžnosti a maximální počet naplánovaných úkolů, které mohou být zpracovány jako jednotka.

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)

Parametry

taskScheduler

TaskScheduler

Cílový plánovač, na kterém se má tento pár spustit.

maxConcurrencyLevel

Int32

Maximální počet úloh, které se mají spustit souběžně.

maxItemsPerTask

Int32

Maximální počet úkolů, které se mají zpracovat pro každý podkladový naplánovaný úkol používaný párem.