using System;
using System.Threading;
namespace ProcessTest
{
 class Program
 {
  //資源
  static int theResource = 0;
  //讀、寫操作鎖
  static ReaderWriterLock rwl = new ReaderWriterLock();
  static void Main(string[] args)
  {
   //分別創(chuàng)建2個讀操作線程，2個寫操作線程，并啟動
   Thread tr0 = new Thread(new ThreadStart(Read));
   Thread tr1 = new Thread(new ThreadStart(Read));
   Thread tr2 = new Thread(new ThreadStart(Write));
   Thread tr3 = new Thread(new ThreadStart(Write));
   tr0.Start();
   tr1.Start();
   tr2.Start();
   tr3.Start();
   //等待線程執(zhí)行完畢
   tr0.Join();
   tr1.Join();
   tr2.Join();
   tr3.Join();
   System.Console.ReadKey();
  }
  //讀數(shù)據(jù)
  static void Read()
  {
   for (int i = 0; i < 3; i++)
   {
    try
    {
     //申請讀操作鎖，如果在1000ms內(nèi)未獲取讀操作鎖，則放棄
     rwl.AcquireReaderLock(1000);
     Console.WriteLine("開始讀取數(shù)據(jù)，theResource = {0}", theResource);
     Thread.Sleep(10);
     Console.WriteLine("讀取數(shù)據(jù)結(jié)束，theResource = {0}", theResource);
     //釋放讀操作鎖
     rwl.ReleaseReaderLock();
    }
    catch (ApplicationException)
    {
     //獲取讀操作鎖失敗的處理
    }
   }
  }
  //寫數(shù)據(jù)
  static void Write()
  {
   for (int i = 0; i < 3; i++)
   {
    try
    {
     //申請寫操作鎖，如果在1000ms內(nèi)未獲取寫操作鎖，則放棄
     rwl.AcquireWriterLock(1000);
     Console.WriteLine("開始寫數(shù)據(jù)，theResource = {0}", theResource);
     //將theResource加1
     theResource++;
     Thread.Sleep(100);
     Console.WriteLine("寫數(shù)據(jù)結(jié)束，theResource = {0}", theResource);
     //釋放寫操作鎖
     rwl.ReleaseWriterLock();
    }
    catch (ApplicationException)
    {
     //獲取寫操作鎖失敗
    }
   }
  }
 }
}