多线程之生产者---消费者模式 

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Net;
  6 using System.Net.Sockets;
  7 using System.Threading;
  8 
  9 namespace ConsoleApplication1
 10 {
 11     class EatAppleSmp
 12     {
 13         public EatAppleSmp()
 14         {
 15             Thread mother, father, lada, laoer, laosan;
 16             Dish dish = new Dish(this, 30);
 17             productor mother1 = new productor("mother", dish);
 18             productor father1 = new productor("father", dish);
 19             customer lada1 = new customer("laoda", dish);
 20             customer laoer1 = new customer("laoer", dish);
 21             customer laosan1 = new customer("laosan", dish);
 22             mother=new Thread(new ThreadStart(mother1.run));
 23             father = new Thread(new ThreadStart(father1.run));
 24             lada = new Thread(new ThreadStart(lada1.run));
 25             laoer = new Thread(new ThreadStart(laoer1.run));
 26             laosan = new Thread(new ThreadStart(laosan1.run));
 27             mother.Priority = ThreadPriority.Highest;
 28             father.Priority = ThreadPriority.Normal;
 29             lada.Priority = ThreadPriority.Lowest;
 30             laoer.Priority = ThreadPriority.Normal;
 31             laosan.Priority = ThreadPriority.Highest;
 32             mother.Start();
 33             father.Start();
 34             lada.Start();
 35             laoer.Start();
 36             laosan.Start();
 37         }
 38         
 39     }
 40     class productor
 41     {
 42         private Dish dish;
 43         private string name;
 44         public productor(string name,Dish dish)
 45         {
 46             this.dish = dish;
 47             this.name = name;
 48         }
 49         public void run()
 50         {
 51             while (true)
 52             {
 53                 dish.put(this.name);
 54                 Thread.Sleep(600);
 55             }
 56             
 57         }
 58     }
 59     class customer
 60     {
 61         private Dish dish;
 62         private string name;
 63         public customer(string name, Dish dish)
 64         {
 65             this.dish = dish;
 66             this.name = name;
 67         }
 68         public void run()
 69         {
 70             while (true)
 71             {
 72                 dish.get(this.name);
 73             }
 74         }
 75     }
 76     class Dish
 77     {
 78         int f = 5;//可放苹果的数量
 79         int total;//总共的苹果个数
 80         int n = 0;
 81         int j = 0;
 82         EatAppleSmp app;
 83         public Dish(EatAppleSmp tst, int total_apple)
 84         {
 85             this.total = total_apple;
 86             this.app = tst;
 87 
 88         }
 89         public void put(string name)
 90         {
 91             if (n > total)
 92                 if (Thread.CurrentThread.IsAlive)
 93                     Thread.CurrentThread.Abort();
 94             lock (this)
 95             {
 96                 while (f == 0)
 97                 {
 98                     try
 99                     {
100                         Console.WriteLine(name + "正在放苹果......");
101                         Monitor.Wait(this);
102                     }
103                     catch(Exception e) { }
104                 }
105                 f--;//苹果放一个
106                 Console.WriteLine(name+"放了一个苹果");
107                 n++;
108                 Monitor.PulseAll(this);
109             }
110         }
111         public void get(string name)
112         {
113             if (j >= total)
114             {
115                 if (Thread.CurrentThread.IsAlive)
116                     Thread.CurrentThread.Abort();
117             }
118             lock (this)
119             {
120                 while (f == 5)
121                 {
122                     Console.WriteLine(name + "等待取苹果......");
123                     Monitor.Wait(this);
124                 }
125                 f++;//苹果吃一个
126                 Console.WriteLine(name + "吃了一个苹果");
127                 j++;
128                
129                 Monitor.PulseAll(this);
130                 
131             }
132         }
133     }
134     class Program
135     {
136         static void Main(string[] args)
137         {
138             EatAppleSmp test = new EatAppleSmp();
139             Console.ReadKey();
140         }
141     }
142 }

 

利用lock解决多线程同步问题。题目：爸爸妈妈削苹果，三个孩子吃，盘子可装5个苹果。用到知识点monitor.wait()与monitor.plusAll();

monitor.wait()释放锁直到重新获取该对象。plusall(),告知其他线程资源已释放。

posted @ 2013-07-27 17:45  CodingWang  阅读(323)  评论(0)  编辑  收藏  举报