BlockingCollection<T>.GetConsumingEnumerable 메서드

정의

네임스페이스:

System.Collections.Concurrent

어셈블리:

System.Collections.Concurrent.dll

컬렉션에 있는 항목에 사용하는 IEnumerable<T>을 제공합니다.

오버로드

GetConsumingEnumerable(CancellationToken)	컬렉션에 있는 항목에 사용하는 IEnumerable<T>을 제공합니다.
GetConsumingEnumerable()	컬렉션에 있는 항목에 사용하는 IEnumerable<T>을 제공합니다.

GetConsumingEnumerable(CancellationToken)

Source:

BlockingCollection.cs

컬렉션에 있는 항목에 사용하는 IEnumerable<T>을 제공합니다.

public:
 System::Collections::Generic::IEnumerable<T> ^ GetConsumingEnumerable(System::Threading::CancellationToken cancellationToken);

public System.Collections.Generic.IEnumerable<T> GetConsumingEnumerable (System.Threading.CancellationToken cancellationToken);

member this.GetConsumingEnumerable : System.Threading.CancellationToken -> seq<'T>

Public Function GetConsumingEnumerable (cancellationToken As CancellationToken) As IEnumerable(Of T)

매개 변수

cancellationToken

CancellationToken

관찰할 취소 토큰입니다.

반환

IEnumerable<T>

컬렉션에서 항목을 제거하고 반환하는 IEnumerable<T>입니다.

예외

OperationCanceledException

CancellationToken이 취소되었습니다.

ObjectDisposedException

BlockingCollection<T>이 삭제되었거나 cancellationToken을 만든 CancellationTokenSource가 삭제되었습니다.

설명

이 메서드를 사용하면 클라이언트 코드가 foreach 루프(Visual Basic의 For Each) 또는 Parallel.ForEach PLINQ 쿼리를 사용하여 컬렉션에서 항목을 제거할 수 있습니다. 열거자는 true를 반환할 때까지 IsCompleted 항목(있는 경우)을 계속 제공하고, 가 false이면 IsCompleted 항목을 사용할 수 있게 될 때까지 또는 가 취소될 때까지 CancellationToken 루프가 차단됩니다.

추가 정보

• 스레드로부터 안전한 컬렉션
• BlockingCollection 개요

GetConsumingEnumerable()

Source:

BlockingCollection.cs

컬렉션에 있는 항목에 사용하는 IEnumerable<T>을 제공합니다.

public:
 System::Collections::Generic::IEnumerable<T> ^ GetConsumingEnumerable();

public System.Collections.Generic.IEnumerable<T> GetConsumingEnumerable ();

member this.GetConsumingEnumerable : unit -> seq<'T>

Public Function GetConsumingEnumerable () As IEnumerable(Of T)

반환

IEnumerable<T>

컬렉션에서 항목을 제거하고 반환하는 IEnumerable<T>입니다.

예외

ObjectDisposedException

BlockingCollection<T>가 삭제된 경우

예제

다음 예제에서는 메서드를 사용하는 GetConsumingEnumerable 방법을 보여줍니다.

class ConsumingEnumerableDemo
{
    // Demonstrates:
    //      BlockingCollection<T>.Add()
    //      BlockingCollection<T>.CompleteAdding()
    //      BlockingCollection<T>.GetConsumingEnumerable()
    public static async Task BC_GetConsumingEnumerable()
    {
        using (BlockingCollection<int> bc = new BlockingCollection<int>())
        {
            // Kick off a producer task
            var producerTask = Task.Run(async () =>
            {
                for (int i = 0; i < 10; i++)
                {
                    bc.Add(i);
                    Console.WriteLine($"Producing: {i}");

                    await Task.Delay(100); // sleep 100 ms between adds
                }

                // Need to do this to keep foreach below from hanging
                bc.CompleteAdding();
            });

            // Now consume the blocking collection with foreach.
            // Use bc.GetConsumingEnumerable() instead of just bc because the
            // former will block waiting for completion and the latter will
            // simply take a snapshot of the current state of the underlying collection.
            foreach (var item in bc.GetConsumingEnumerable())
            {
                Console.WriteLine($"Consuming: {item}");
            }
            await producerTask; // Allow task to complete cleanup
        }
    }
}

module ConsumingEnumerableDemo =
    // Demonstrates:
    //      BlockingCollection<T>.Add()
    //      BlockingCollection<T>.CompleteAdding()
    //      BlockingCollection<T>.GetConsumingEnumerable()
    let blockingCollectionGetConsumingEnumerable () =
        task {
            use bc = new BlockingCollection<int>()
            // Kick off a producer task
            let producerTask =
                task {
                    for i = 0 to 9 do
                        bc.Add i
                        printfn $"Producing: {i}"

                        do! Task.Delay 100 // sleep 100 ms between adds
                    // Need to do this to keep foreach below from hanging
                    bc.CompleteAdding()
                }

            // Now consume the blocking collection with foreach.
            // Use bc.GetConsumingEnumerable() instead of just bc because the
            // former will block waiting for completion and the latter will
            // simply take a snapshot of the current state of the underlying collection.
            for item in bc.GetConsumingEnumerable() do
                printfn $"Consuming: {item}"
            do! producerTask // Allow task to complete cleanup
        }

'Imports System.Threading.Tasks
'Imports System.Collections.Concurrent

' Demonstrates:
' BlockingCollection<T>.Add()
' BlockingCollection<T>.CompleteAdding()
' BlockingCollection<T>.GetConsumingEnumerable()

Class ConsumingEnumerableDemo
    Shared Sub BC_GetConsumingEnumerable()
        Using bc As New BlockingCollection(Of Integer)()

            ' Kick off a producer task
            Task.Factory.StartNew(
                Sub()
                    For i As Integer = 0 To 9
                        bc.Add(i)
                        ' sleep 100 ms between adds
                        Thread.Sleep(100)
                    Next

                    ' Need to do this to keep foreach below from not responding.
                    bc.CompleteAdding()
                End Sub)
            ' Now consume the blocking collection with foreach.
            ' Use bc.GetConsumingEnumerable() instead of just bc because the
            ' former will block waiting for completion and the latter will
            ' simply take a snapshot of the current state of the underlying collection.
            For Each item In bc.GetConsumingEnumerable()
                Console.WriteLine(item)
            Next
        End Using
    End Sub
End Class

추가 정보

• 스레드로부터 안전한 컬렉션
• BlockingCollection 개요