案例1 

 1 public class Program
 2     {
 3         async static Task Main(string[] args)
 4         {
 5             Helper.PrintThreadId("before", "main");
 6             await FooAsync();
 7             Helper.PrintThreadId("after", "main");
 8             Console.ReadLine();
 9         }
10 
11         async static Task FooAsync()
12         {
13             //await Task.Delay(3000);
14             Helper.PrintThreadId("before", "FooAsync");
               //ConfigureAwait(false) 代表执行完之后不会回到原来线程  true则为回到原来线程
15             await Task.Delay(1000).ConfigureAwait(false);
16             Helper.PrintThreadId("after", "FooAsync");
17         }
18     }
19 
20     class Helper
21     {
22         static int index = 1;
23         public static void PrintThreadId(string message = null, [CallerMemberName] string name = null)
24         {
25             var title = "";
26             if(!string.IsNullOrEmpty(message))
27             {
28                 title = $"@{message}:{name}";
29             }
30             Console.WriteLine(title+":"+ Environment.CurrentManagedThreadId.ToString()) ;
31             Interlocked.Increment(ref index) ;
32         }
33     }

输出结果:

@before:main:1
@before:FooAsync:1

//间隔1s ，输出下面内容
@after:FooAsync:4
@after:main:4

 

posted @ 2024-07-14 13:45  NoTimeFF  阅读(14)  评论(0)    收藏  举报