c#

c# taskscheduler配置文件如何编写

小樊
81
2024-11-25 14:06:50
栏目: 编程语言

在C#中,您可以使用TaskScheduler类来创建和管理任务。要配置TaskScheduler,您需要创建一个继承自TaskScheduler的自定义类,并重写InitializeRun方法。以下是一个简单的示例,展示了如何创建一个自定义的TaskScheduler

using System;
using System.Collections.Concurrent;
using System.Threading;
using System.Threading.Tasks;

public class CustomTaskScheduler : TaskScheduler
{
    private readonly ConcurrentQueue<Task> _tasks = new ConcurrentQueue<Task>();
    private readonly ManualResetEvent _taskReadyEvent = new ManualResetEvent(false);
    private readonly object _lock = new object();

    protected override IEnumerable<Task> GetScheduledTasks()
    {
        lock (_lock)
        {
            return _tasks;
        }
    }

    public void EnqueueTask(Task task)
    {
        if (task == null)
        {
            throw new ArgumentNullException("task");
        }

        lock (_lock)
        {
            _tasks.Enqueue(task);
            _taskReadyEvent.Set();
        }
    }

    protected override void Run()
    {
        while (true)
        {
            Task task = null;
            bool success = false;

            lock (_lock)
            {
                if (!_tasks.IsEmpty)
                {
                    task = _tasks.Dequeue();
                    success = true;
                }
            }

            if (!success)
            {
                _taskReadyEvent.WaitOne(1000);
            }
            else
            {
                try
                {
                    base.Run();
                }
                catch (Exception ex)
                {
                    Console.WriteLine("An error occurred while running the task: " + ex.Message);
                }
            }
        }
    }
}

要使用此自定义TaskScheduler,您需要创建一个实例并将其传递给Task.Run方法。例如:

public class Program
{
    public static void Main(string[] args)
    {
        CustomTaskScheduler customScheduler = new CustomTaskScheduler();

        Task task = Task.Run(() =>
        {
            Console.WriteLine("Task is running on thread: " + Thread.CurrentThread.ManagedThreadId);
            Thread.Sleep(1000);
            Console.WriteLine("Task completed.");
        }, CancellationToken.None, TaskCreationOptions.None, customScheduler);

        Console.WriteLine("Press any key to exit...");
        Console.ReadKey();
    }
}

在这个示例中,我们创建了一个CustomTaskScheduler实例,并将其传递给Task.Run方法。这将确保任务在自定义调度器上运行。

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