zoukankan      html  css  js  c++  java
  • CancellationTokenSource

     CancellationTokenSource

    一、代码案例

    代码:

      class Program
        {
            private static int TaskMethod(string name, int seconds, CancellationToken token)
            {
                Console.WriteLine("{0} is running on a thread id {1}. Is thread pool thread: {2}",
                    name, Thread.CurrentThread.ManagedThreadId, Thread.CurrentThread.IsThreadPoolThread);
                for (int i = 0; i < seconds; i++)
                {
                    Thread.Sleep(TimeSpan.FromSeconds(1));
                    if (token.IsCancellationRequested) return -1;
                }
                return 42 * seconds;
            }
    
            private static void Main(string[] args)
            {
                //Test_One
                var cts = new CancellationTokenSource();
                var longTask = new Task<int>(() => TaskMethod("Task 1", 10, cts.Token), cts.Token);
                Console.WriteLine(longTask.Status);
    
                cts.Cancel();//異步多線程
                Console.WriteLine(longTask.Status);
    
                Console.WriteLine("First task has been cancelled before execution");
    
                //Test_Two
                cts = new CancellationTokenSource();
                longTask = new Task<int>(() => TaskMethod("Task 2", 10, cts.Token), cts.Token);
                longTask.Start();
                for (int i = 0; i < 5; i++)
                {
                    Thread.Sleep(TimeSpan.FromSeconds(0.5));
                    Console.WriteLine(longTask.Status);
                }
                cts.Cancel();
                for (int i = 0; i < 5; i++)
                {
                    Thread.Sleep(TimeSpan.FromSeconds(0.5));
                    Console.WriteLine(longTask.Status);
                }
                Console.WriteLine("A task has been completed with result {0}.", longTask.Result);
            }
        }

    结果:


    技术的发展日新月异,随着时间推移,无法保证本博客所有内容的正确性。如有误导,请大家见谅,欢迎评论区指正!
    我创建了一个.NET开发交流群,用于分享学习心得和讨论相关技术难题。欢迎有兴趣的小伙伴扫码入群,相互学习!

  • 相关阅读:
    Palindrome Partitioning
    triangle
    Populating Next Right Pointers in Each Node(I and II)
    分苹果(网易)
    Flatten Binary Tree to Linked List
    Construct Binary Tree from Inorder and Postorder Traversal(根据中序遍历和后序遍历构建二叉树)
    iOS系统navigationBar背景色,文字颜色处理
    登录,注销
    ios 文字上下滚动效果Demo
    经常崩溃就是数组字典引起的
  • 原文地址:https://www.cnblogs.com/wml-it/p/14858319.html
Copyright © 2011-2022 走看看