using System;
using System.Diagnostics;
using System.Threading;

namespace InterlockedSample
{
  // 比較使用鎖和不使用鎖鎖消耗的時間
  // 通過時間來說明使用鎖性能的影響
  class Program
  {
    static void Main(string[] args)
    {
      int x = 0;
      // 迭代次數(shù)為500萬
      const int iterationNumber = 5000000; 
      // 不采用鎖的情況
      // StartNew方法 對新的 Stopwatch 實例進(jìn)行初始化，將運(yùn)行時間屬性設(shè)置為零，然后開始測量運(yùn)行時間。
      Stopwatch sw = Stopwatch.StartNew();
      for (int i = 0; i < iterationNumber; i++)
      {
        x++;
      }

      Console.WriteLine("Use the all time is :{0} ms", sw.ElapsedMilliseconds);

      sw.Restart();
      // 使用鎖的情況
      for (int i = 0; i < iterationNumber; i++)
      {
        Interlocked.Increment(ref x);
      }

      Console.WriteLine("Use the all time is :{0} ms", sw.ElapsedMilliseconds);
      Console.Read();
    }
  }
}

class Program
  {
    static void Main(string[] args)
    {   for (int i = 0; i < 10; i++)
      {
        Thread testthread = new Thread(Add);
        testthread.Start();
      }

      Console.Read();
    }

    // 共享資源
    public static int number = 1;

    public static void Add()
    {
      Thread.Sleep(1000);
      Console.WriteLine("the current value of number is:{0}", ++number);
    }
}

using System;
using System.Threading;

namespace MonitorSample
{
  class Program
  {
    static void Main(string[] args)
    {
      for (int i = 0; i < 10; i++)
      {
        Thread testthread = new Thread(Add);
        testthread.Start();
      }

      Console.Read();
    }

    // 共享資源
    public static int number = 1;

    public static void Add()
    {
      Thread.Sleep(1000);
      //獲得排他鎖
      Monitor.Enter(number);

      Console.WriteLine("the current value of number is:{0}", number++);

      // 釋放指定對象上的排他鎖。
      Monitor.Exit(number);
    }
  }
}

using System;
using System.Collections.Generic;
using System.Threading;

namespace ReaderWriterLockSample
{
  class Program
  {
    public static List<int> lists = new List<int>();

    // 創(chuàng)建一個對象
    public static ReaderWriterLock readerwritelock = new ReaderWriterLock();
    static void Main(string[] args)
    {
      //創(chuàng)建一個線程讀取數(shù)據(jù)
      Thread t1 = new Thread(Write);
      t1.Start();
      // 創(chuàng)建10個線程讀取數(shù)據(jù)
      for (int i = 0; i < 10; i++)
      {
        Thread t = new Thread(Read);
        t.Start();
      }

      Console.Read();

    }

    // 寫入方法
    public static void Write()
    {
      // 獲取寫入鎖，以10毫秒為超時。
      readerwritelock.AcquireWriterLock(10);
      Random ran = new Random();
      int count = ran.Next(1, 10);
      lists.Add(count);
      Console.WriteLine("Write the data is:" + count);
      // 釋放寫入鎖
      readerwritelock.ReleaseWriterLock();
    }

    // 讀取方法
    public static void Read()
    {
      // 獲取讀取鎖
      readerwritelock.AcquireReaderLock(10);

      foreach (int li in lists)
      {
        // 輸出讀取的數(shù)據(jù)
        Console.WriteLine(li);
      }

      // 釋放讀取鎖
      readerwritelock.ReleaseReaderLock();
    }
  }
}