C# 多线程协同完成一个任务

C# 多线程示例

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本文通过一个具体的示例介绍了如何使用 C# 实现多线程来提高程序的执行效率。示例中，两个线程分别计算一系列数字的累加，并通过锁机制保证了数据的一致性。

C# 多线程协同完成一个任务

voodooer 于星期日, 02/03/2014 - 18:30 提交

 
             01 using System;
 
             02 using System.Collections.Generic;
 
             03 using System.Linq;
 
             04 using System.Text;
 
             05 using System.Threading;
 
             06  
 
             07 namespace ConsoleApplication3
 
             08 {
 
             09     class Program
 
             10     {
 
             11         static long Sum=0;
 
             12         static object mylock;
 
             13         static void Main(string[] args)
 
             14         {
 
             15             long n = 0;
 
             16             long s1 = DateTime.Now.Ticks;
 
             17             for (int i = 0; i <= 100; i++)
 
             18             {
 
             19                 n += i;
 
             20                 Thread.Sleep(10);
 
             21             }
 
             22             long s2 = DateTime.Now.Ticks;
 
             23             Console.Write("----------------单线程运行-------------------\nsum:" + n + "\n\r所花时间(纳秒):" + (s2 - s1)+"\n");
 
             24             Console.Write("----------------双线程运行-------------------\n");
 
             25             Thread t1 = new Thread(add1);
 
             26             Thread t2 = new Thread(add2);
 
             27             mylock = new object();
 
             28             s1 = DateTime.Now.Ticks;
 
             29             t1.Start();
 
             30             t2.Start();
 
             31             t1.Join();
 
             32             t2.Join();
 
             33             s2 = DateTime.Now.Ticks;
 
             34             Console.Write("sum:" + n + "\n\r所花时间(纳秒):" + (s2 - s1));
 
             35             Console.ReadKey();
 
             36         }
 
             37         static void add1()
 
             38         {
 
             39             long n = 0;
 
             40             for (int i = 0; i <= 50; i++)
 
             41             {
 
             42                 n += i;
 
             43                 Thread.Sleep(10);
 
             44             }
 
             45             Monitor.Enter(mylock);
 
             46             Sum += n;
 
             47             Console.Write("线程一运行完毕,Sum:" + Sum+"\n");
 
             48             Monitor.Exit(mylock);
 
             49             
 
             50              
 
             51         }
 
             52         static void add2()
 
             53         {
 
             54             long n = 0;
 
             55             for (int i = 51; i <= 100; i++)
 
             56             {
 
             57                 n += i;
 
             58                 Thread.Sleep(10);
 
             59             }
 
             60             Monitor.Enter(mylock);
 
             61             Sum += n;
 
             62             Console.Write("线程二运行完毕,Sum:" + Sum + "\n");
 
             63             Monitor.Exit(mylock);
 
             64             
 
             65         }
 
             66     }
 
             67 }