Task.WaitAll Task.WaitAll Task.WaitAll Task.WaitAll Method

Definition

제공된 모든 Task 개체의 실행이 완료되기를 기다립니다. Waits for all of the provided Task objects to complete execution.

Overloads

WaitAll(Task[]) WaitAll(Task[]) WaitAll(Task[]) WaitAll(Task[])

제공된 모든 Task 개체의 실행이 완료되기를 기다립니다. Waits for all of the provided Task objects to complete execution.

WaitAll(Task[], Int32) WaitAll(Task[], Int32) WaitAll(Task[], Int32) WaitAll(Task[], Int32)

모든 제공된 Task 개체가 지정된 시간(밀리초) 내에 실행을 완료할 때까지 기다립니다. Waits for all of the provided Task objects to complete execution within a specified number of milliseconds.

WaitAll(Task[], CancellationToken) WaitAll(Task[], CancellationToken) WaitAll(Task[], CancellationToken)

대기가 취소되지 않는 경우 제공된 모든 Task 개체가 실행을 완료하기를 기다립니다. Waits for all of the provided Task objects to complete execution unless the wait is cancelled.

WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan)

모든 제공된 취소 가능한 Task 개체가 지정된 시간 간격 내에 실행을 완료할 때까지 기다립니다. Waits for all of the provided cancellable Task objects to complete execution within a specified time interval.

WaitAll(Task[], Int32, CancellationToken) WaitAll(Task[], Int32, CancellationToken) WaitAll(Task[], Int32, CancellationToken)

제공된 모든 Task 개체가 지정된 시간(밀리초) 내에 실행을 완료하기를 기다리거나 대기가 취소될 때까지 기다립니다. Waits for all of the provided Task objects to complete execution within a specified number of milliseconds or until the wait is cancelled.

WaitAll(Task[]) WaitAll(Task[]) WaitAll(Task[]) WaitAll(Task[])

제공된 모든 Task 개체의 실행이 완료되기를 기다립니다. Waits for all of the provided Task objects to complete execution.

public:
 static void WaitAll(... cli::array <System::Threading::Tasks::Task ^> ^ tasks);
public static void WaitAll (params System.Threading.Tasks.Task[] tasks);
static member WaitAll : System.Threading.Tasks.Task[] -> unit
Public Shared Sub WaitAll (ParamArray tasks As Task())

매개 변수

tasks
Task[]

대기할 Task 인스턴스의 배열입니다. An array of Task instances on which to wait.

Exceptions

tasks에서 하나 이상의 Task 개체가 삭제되었습니다. One or more of the Task objects in tasks has been disposed.

tasks 인수가 null인 경우 The tasks argument is null.

tasks 인수에 null 요소가 포함되어 있습니다. The tasks argument contains a null element. 또는 -or- tasks 인수가 빈 배열인 경우 The tasks argument is an empty array.

Task 인스턴스 중 하나 이상이 취소된 경우 At least one of the Task instances was canceled. 작업이 취소된 경우 AggregateException 예외에는 해당 InnerExceptions 컬렉션의 OperationCanceledException 예외가 포함됩니다. If a task was canceled, the AggregateException exception contains an OperationCanceledException exception in its InnerExceptions collection. 또는 -or- Task 인스턴스 중 하나 이상을 실행하는 동안 예외가 발생한 경우 An exception was thrown during the execution of at least one of the Task instances.

Examples

다음 예에서는 인덱스를 상태 개체로 전달 되는 각각 10 개의 작업을 시작 합니다.The following example starts 10 tasks, each of which is passed an index as a state object. 2 ~ 5 개의 인덱스를 사용 하 여 작업 예외를 throw 합니다.Tasks with an index from two to five throw exceptions. 에 대 한 호출을 WaitAll 메서드는 모든 예외를 래핑합니다는 AggregateException 개체 및 호출 스레드를 전파 합니다.The call to the WaitAll method wraps all exceptions in an AggregateException object and propagates it to the calling thread.

using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;

class Example
{
    static void Main()
    {
        var tasks = new List<Task<int>>();
         
        // Define a delegate that prints and returns the system tick count
        Func<object, int> action = (object obj) =>
        {
            int i = (int)obj;

            // Make each thread sleep a different time in order to return a different tick count
            Thread.Sleep(i * 100);

            // The tasks that receive an argument between 2 and 5 throw exceptions
            if (2 <= i && i <= 5)
            {
                throw new InvalidOperationException("SIMULATED EXCEPTION");
            }

            int tickCount = Environment.TickCount;
            Console.WriteLine("Task={0}, i={1}, TickCount={2}, Thread={3}", Task.CurrentId, i, tickCount, Thread.CurrentThread.ManagedThreadId);

            return tickCount;
        };

        // Construct started tasks
        for (int i = 0; i < 10; i++)
        {
            int index = i;
            tasks.Add(Task<int>.Factory.StartNew(action, index));
        }

        try
        {
            // Wait for all the tasks to finish.
            Task.WaitAll(tasks.ToArray());

            // We should never get to this point
            Console.WriteLine("WaitAll() has not thrown exceptions. THIS WAS NOT EXPECTED.");
        }
        catch (AggregateException e)
        {
            Console.WriteLine("\nThe following exceptions have been thrown by WaitAll(): (THIS WAS EXPECTED)");
            for (int j = 0; j < e.InnerExceptions.Count; j++)
            {
                Console.WriteLine("\n-------------------------------------------------\n{0}", e.InnerExceptions[j].ToString());
            }
        }
    }
}
// The example displays output like the following:
//     Task=1, i=0, TickCount=1203822250, Thread=3
//     Task=2, i=1, TickCount=1203822359, Thread=4
//     Task=7, i=6, TickCount=1203823484, Thread=3
//     Task=8, i=7, TickCount=1203823890, Thread=4
//     Task=9, i=8, TickCount=1203824296, Thread=3
//     Task=10, i=9, TickCount=1203824796, Thread=4
//     
//     The following exceptions have been thrown by WaitAll(): (THIS WAS EXPECTED)
//     
//     -------------------------------------------------
//     System.InvalidOperationException: SIMULATED EXCEPTION
//        at Example.<Main>b__0(Object obj)
//        at System.Threading.Tasks.Task`1.InnerInvoke()
//        at System.Threading.Tasks.Task.Execute()
//     
//     -------------------------------------------------
//     System.InvalidOperationException: SIMULATED EXCEPTION
//        at Example.<Main>b__0(Object obj)
//        at System.Threading.Tasks.Task`1.InnerInvoke()
//        at System.Threading.Tasks.Task.Execute()
//     
//     -------------------------------------------------
//     System.InvalidOperationException: SIMULATED EXCEPTION
//        at Example.<Main>b__0(Object obj)
//        at System.Threading.Tasks.Task`1.InnerInvoke()
//        at System.Threading.Tasks.Task.Execute()
//     
//     -------------------------------------------------
//     System.InvalidOperationException: SIMULATED EXCEPTION
//        at Example.<Main>b__0(Object obj)
//        at System.Threading.Tasks.Task`1.InnerInvoke()
//        at System.Threading.Tasks.Task.Execute()
Imports System.Collections.Generic
Imports System.Threading
Imports System.Threading.Tasks

Module WaitAllDemo
    Sub Main()
        Dim tasks As New List(Of Task(Of Integer))()
        ' Define a delegate that prints and returns the system tick count
        Dim action As Func(Of Object, Integer) = Function(obj As Object)
                                                     Dim i As Integer = CInt(obj)

                                                     ' Make each thread sleep a different time in order to return a different tick count
                                                     Thread.Sleep(i * 100)

                                                     ' The tasks that receive an argument between 2 and 5 throw exceptions
                                                     If 2 <= i AndAlso i <= 5 Then
                                                         Throw New InvalidOperationException("SIMULATED EXCEPTION")
                                                     End If

                                                     Dim tickCount As Integer = Environment.TickCount
                                                     Console.WriteLine("Task={0}, i={1}, TickCount={2}, Thread={3}", Task.CurrentId, i, tickCount, Thread.CurrentThread.ManagedThreadId)

                                                     Return tickCount
                                                 End Function

        ' Construct started tasks
        For i As Integer = 0 To 9
            Dim index As Integer = i
            tasks.Add(Task(Of Integer).Factory.StartNew(action, index))
        Next

        Try
            ' Wait for all the tasks to finish.
            Task.WaitAll(tasks.ToArray())

            ' We should never get to this point
            Console.WriteLine("WaitAll() has not thrown exceptions. THIS WAS NOT EXPECTED.")
        Catch e As AggregateException
            Console.WriteLine(vbLf & "The following exceptions have been thrown by WaitAll(): (THIS WAS EXPECTED)")
            For j As Integer = 0 To e.InnerExceptions.Count - 1
                Console.WriteLine(vbLf & "-------------------------------------------------" & vbLf & "{0}", e.InnerExceptions(j).ToString())
            Next
        End Try
    End Sub
End Module
' The example displays output like the following:
'     Task=1, i=0, TickCount=1203822250, Thread=3
'     Task=2, i=1, TickCount=1203822359, Thread=4
'     Task=7, i=6, TickCount=1203823484, Thread=3
'     Task=8, i=7, TickCount=1203823890, Thread=4
'     Task=9, i=8, TickCount=1203824296, Thread=3
'     Task=10, i=9, TickCount=1203824796, Thread=4
'     
'     The following exceptions have been thrown by WaitAll(): (THIS WAS EXPECTED)
'     
'     -------------------------------------------------
'     System.InvalidOperationException: SIMULATED EXCEPTION
'        at Example.<Main>b__0(Object obj)
'        at System.Threading.Tasks.Task`1.InnerInvoke()
'        at System.Threading.Tasks.Task.Execute()
'     
'     -------------------------------------------------
'     System.InvalidOperationException: SIMULATED EXCEPTION
'        at Example.<Main>b__0(Object obj)
'        at System.Threading.Tasks.Task`1.InnerInvoke()
'        at System.Threading.Tasks.Task.Execute()
'     
'     -------------------------------------------------
'     System.InvalidOperationException: SIMULATED EXCEPTION
'        at Example.<Main>b__0(Object obj)
'        at System.Threading.Tasks.Task`1.InnerInvoke()
'        at System.Threading.Tasks.Task.Execute()
'     
'     -------------------------------------------------
'     System.InvalidOperationException: SIMULATED EXCEPTION
'        at Example.<Main>b__0(Object obj)
'        at System.Threading.Tasks.Task`1.InnerInvoke()
'        at System.Threading.Tasks.Task.Execute()

WaitAll(Task[], Int32) WaitAll(Task[], Int32) WaitAll(Task[], Int32) WaitAll(Task[], Int32)

모든 제공된 Task 개체가 지정된 시간(밀리초) 내에 실행을 완료할 때까지 기다립니다. Waits for all of the provided Task objects to complete execution within a specified number of milliseconds.

public:
 static bool WaitAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, int millisecondsTimeout);
public static bool WaitAll (System.Threading.Tasks.Task[] tasks, int millisecondsTimeout);
static member WaitAll : System.Threading.Tasks.Task[] * int -> bool
Public Shared Function WaitAll (tasks As Task(), millisecondsTimeout As Integer) As Boolean

매개 변수

tasks
Task[]

대기할 Task 인스턴스의 배열입니다. An array of Task instances on which to wait.

millisecondsTimeout
Int32 Int32 Int32 Int32

대기할 시간(밀리초)이거나, 무기한 대기할 경우 Infinite(-1)입니다. The number of milliseconds to wait, or Infinite (-1) to wait indefinitely.

Returns

모든 true 인스턴스의 실행이 할당된 시간 안에 완료되었으면 Task이고, 그렇지 않으면 false입니다. true if all of the Task instances completed execution within the allotted time; otherwise, false.

Exceptions

tasks에서 하나 이상의 Task 개체가 삭제되었습니다. One or more of the Task objects in tasks has been disposed.

tasks 인수가 null인 경우 The tasks argument is null.

Task 인스턴스 중 하나 이상이 취소된 경우 At least one of the Task instances was canceled. 작업이 취소된 경우 AggregateExceptionInnerExceptions 컬렉션에 OperationCanceledException이 포함됩니다. If a task was canceled, the AggregateException contains an OperationCanceledException in its InnerExceptions collection. 또는 -or- Task 인스턴스 중 하나 이상을 실행하는 동안 예외가 발생한 경우 An exception was thrown during the execution of at least one of the Task instances.

millisecondsTimeout이 시간 제한 없음을 나타내는 -1 이외의 음수인 경우 millisecondsTimeout is a negative number other than -1, which represents an infinite time-out.

tasks 인수에 null 요소가 포함되어 있습니다. The tasks argument contains a null element. 또는 -or- tasks 인수가 빈 배열인 경우 The tasks argument is an empty array.

WaitAll(Task[], CancellationToken) WaitAll(Task[], CancellationToken) WaitAll(Task[], CancellationToken)

대기가 취소되지 않는 경우 제공된 모든 Task 개체가 실행을 완료하기를 기다립니다. Waits for all of the provided Task objects to complete execution unless the wait is cancelled.

public:
 static void WaitAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, System::Threading::CancellationToken cancellationToken);
public static void WaitAll (System.Threading.Tasks.Task[] tasks, System.Threading.CancellationToken cancellationToken);
static member WaitAll : System.Threading.Tasks.Task[] * System.Threading.CancellationToken -> unit

매개 변수

tasks
Task[]

대기할 Task 인스턴스의 배열입니다. An array of Task instances on which to wait.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

작업이 완료되기를 기다리는 동안 확인할 CancellationToken입니다. A CancellationToken to observe while waiting for the tasks to complete.

Exceptions

cancellationToken을 취소했습니다. The cancellationToken was canceled.

tasks 인수가 null인 경우 The tasks argument is null.

Task 인스턴스 중 하나 이상이 취소된 경우 At least one of the Task instances was canceled. 작업이 취소된 경우 AggregateExceptionInnerExceptions 컬렉션에 OperationCanceledException이 포함됩니다. If a task was canceled, the AggregateException contains an OperationCanceledException in its InnerExceptions collection. 또는 -or- Task 인스턴스 중 하나 이상을 실행하는 동안 예외가 발생한 경우 An exception was thrown during the execution of at least one of the Task instances.

tasks 인수에 null 요소가 포함되어 있습니다. The tasks argument contains a null element. 또는 -or- tasks 인수가 빈 배열인 경우 The tasks argument is an empty array.

tasks에서 하나 이상의 Task 개체가 삭제되었습니다. One or more of the Task objects in tasks has been disposed.

Remarks

cancellationToken 인수를 사용 하 여 대기 작업을 취소 합니다.The cancellationToken argument is used to cancel the wait operation. 작업을 취소 하는 고유한 작업 및 신호를 보낼는 AggregateException 위에서 설명한 것 처럼 합니다.Cancellation of the tasks is a distinct operation, and is signaled by the AggregateException as noted above.

WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan)

모든 제공된 취소 가능한 Task 개체가 지정된 시간 간격 내에 실행을 완료할 때까지 기다립니다. Waits for all of the provided cancellable Task objects to complete execution within a specified time interval.

public:
 static bool WaitAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, TimeSpan timeout);
public static bool WaitAll (System.Threading.Tasks.Task[] tasks, TimeSpan timeout);
static member WaitAll : System.Threading.Tasks.Task[] * TimeSpan -> bool
Public Shared Function WaitAll (tasks As Task(), timeout As TimeSpan) As Boolean

매개 변수

tasks
Task[]

대기할 Task 인스턴스의 배열입니다. An array of Task instances on which to wait.

timeout
TimeSpan TimeSpan TimeSpan TimeSpan

대기할 시간(밀리초)을 나타내는 TimeSpan이거나, 무한 대기하도록 -1밀리초를 나타내는 TimeSpan입니다. A TimeSpan that represents the number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely.

Returns

모든 true 인스턴스의 실행이 할당된 시간 안에 완료되었으면 Task이고, 그렇지 않으면 false입니다. true if all of the Task instances completed execution within the allotted time; otherwise, false.

Exceptions

tasks에서 하나 이상의 Task 개체가 삭제되었습니다. One or more of the Task objects in tasks has been disposed.

tasks 인수가 null인 경우 The tasks argument is null.

Task 인스턴스 중 하나 이상이 취소된 경우 At least one of the Task instances was canceled. 작업이 취소된 경우 AggregateExceptionInnerExceptions 컬렉션에 OperationCanceledException이 포함됩니다. If a task was canceled, the AggregateException contains an OperationCanceledException in its InnerExceptions collection. 또는 -or- Task 인스턴스 중 하나 이상을 실행하는 동안 예외가 발생한 경우 An exception was thrown during the execution of at least one of the Task instances.

timeout은 시간 제한이 없음을 나타내는 -1밀리초 이외의 음수입니다. timeout is a negative number other than -1 milliseconds, which represents an infinite time-out. 또는 -or- timeoutMaxValue보다 큰 경우 timeout is greater than MaxValue.

tasks 인수에 null 요소가 포함되어 있습니다. The tasks argument contains a null element. 또는 -or- tasks 인수가 빈 배열인 경우 The tasks argument is an empty array.

WaitAll(Task[], Int32, CancellationToken) WaitAll(Task[], Int32, CancellationToken) WaitAll(Task[], Int32, CancellationToken)

제공된 모든 Task 개체가 지정된 시간(밀리초) 내에 실행을 완료하기를 기다리거나 대기가 취소될 때까지 기다립니다. Waits for all of the provided Task objects to complete execution within a specified number of milliseconds or until the wait is cancelled.

public:
 static bool WaitAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, int millisecondsTimeout, System::Threading::CancellationToken cancellationToken);
public static bool WaitAll (System.Threading.Tasks.Task[] tasks, int millisecondsTimeout, System.Threading.CancellationToken cancellationToken);
static member WaitAll : System.Threading.Tasks.Task[] * int * System.Threading.CancellationToken -> bool

매개 변수

tasks
Task[]

대기할 Task 인스턴스의 배열입니다. An array of Task instances on which to wait.

millisecondsTimeout
Int32 Int32 Int32 Int32

대기할 시간(밀리초)이거나, 무기한 대기할 경우 Infinite(-1)입니다. The number of milliseconds to wait, or Infinite (-1) to wait indefinitely.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

작업이 완료되기를 기다리는 동안 확인할 CancellationToken입니다. A CancellationToken to observe while waiting for the tasks to complete.

Returns

모든 true 인스턴스의 실행이 할당된 시간 안에 완료되었으면 Task이고, 그렇지 않으면 false입니다. true if all of the Task instances completed execution within the allotted time; otherwise, false.

Exceptions

tasks에서 하나 이상의 Task 개체가 삭제되었습니다. One or more of the Task objects in tasks has been disposed.

tasks 인수가 null인 경우 The tasks argument is null.

Task 인스턴스 중 하나 이상이 취소된 경우 At least one of the Task instances was canceled. 작업이 취소된 경우 AggregateExceptionInnerExceptions 컬렉션에 OperationCanceledException이 포함됩니다. If a task was canceled, the AggregateException contains an OperationCanceledException in its InnerExceptions collection. 또는 -or- Task 인스턴스 중 하나 이상을 실행하는 동안 예외가 발생한 경우 An exception was thrown during the execution of at least one of the Task instances.

millisecondsTimeout이 시간 제한 없음을 나타내는 -1 이외의 음수인 경우 millisecondsTimeout is a negative number other than -1, which represents an infinite time-out.

tasks 인수에 null 요소가 포함되어 있습니다. The tasks argument contains a null element. 또는 -or- tasks 인수가 빈 배열인 경우 The tasks argument is an empty array.

cancellationToken을 취소했습니다. The cancellationToken was canceled.

Remarks

cancellationToken 인수를 사용 하 여 대기 작업을 취소 합니다.The cancellationToken argument is used to cancel the wait operation. 작업을 취소 하는 고유한 작업 및 신호를 보낼는 AggregateException 위에서 설명한 것입니다.Cancellation of the tasks is a distinct operation, and is signaled by the AggregateException noted above.

Applies to