CStopWatch - 秒表风格的代码执行速度测试

下载源代码文件 - 2.51 Kb

引言

一个非常简单易用的秒表类，用于代码执行速度测试。只需将 enumCStopWatchStateMachine 和 CStopWatch 的代码粘贴到您的项目中，并调用 reset() 将秒表重置为 0。调用 start() 启动秒表。调用 stop() 停止秒表。调用 getTimeEllapsedInMilliseconds() 获取秒表中的当前毫秒数。

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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace InCodeTimeTest{

    public enum enumCStopWatchStateMachine
    {
      STOPPED_AND_NEVER_BEEN_STARTED,
      RETURNING_ZERO,
      BEENSTARTED_AND_COUNTING,
      RETURNING_DIFFERENCE_PLUS_CASHED_TIME_DIFFERENCE,
      BEEN_STARTED_AND_NOT_COUNTING,
      RETURNING_CASHED_TIME_DIFFERENCE
    }

这个类的工作方式就像一个手持秒表。

    public class CStopWatch
    {
      System.DateTime m_tmStartDateTime;
      enumCStopWatchStateMachine m_enumState;
      int m_intTimeEllapsedInMilliseconds;

这些是秒表支持的事件

      void CSpeedTest()
      {
       lock(this)
       {
        stateSTOPPED_AND_NEVER_BEEN_STARTED();
        m_enumState = enumCStopWatchStateMachine.STOPPED_AND_NEVER_BEEN_STARTED;
       }
      }
      public int getTimeEllapsedInMilliseconds()
      {
       lock(this)
       {
        switch(m_enumState)
        {
         case enumCStopWatchStateMachine.STOPPED_AND_NEVER_BEEN_STARTED:
          return stateRETURNING_ZERO();
         case enumCStopWatchStateMachine.BEENSTARTED_AND_COUNTING:
          return stateRETURNING_DIFFERENCE_PLUS_CASHED_TIME_DIFFERENCE();
         case enumCStopWatchStateMachine.BEEN_STARTED_AND_NOT_COUNTING:
          return stateRETURNING_CASHED_TIME_DIFFERENCE();
        }
        return 0;
       }
      }
      public void reset()
      {
       lock(this)
       {
        m_enumState = enumCStopWatchStateMachine.STOPPED_AND_NEVER_BEEN_STARTED;
        stateSTOPPED_AND_NEVER_BEEN_STARTED();
       }
      }
      public void start()
      {
       lock(this)
       {
        switch(m_enumState)
        {
         case enumCStopWatchStateMachine.STOPPED_AND_NEVER_BEEN_STARTED:
          m_enumState = enumCStopWatchStateMachine.BEENSTARTED_AND_COUNTING;
          stateBEENSTARTED_AND_COUNTING();
          break;
         case enumCStopWatchStateMachine.BEENSTARTED_AND_COUNTING:
          //do nothing
          break;
         case enumCStopWatchStateMachine.BEEN_STARTED_AND_NOT_COUNTING:
          m_enumState = enumCStopWatchStateMachine.BEENSTARTED_AND_COUNTING;
          stateBEENSTARTED_AND_COUNTING();
          break;
        }
       }
      }
      public void stop()
      {
       lock(this)
       {
        switch(m_enumState)
        {
         case enumCStopWatchStateMachine.STOPPED_AND_NEVER_BEEN_STARTED:
          //do nothing
          break;
         case enumCStopWatchStateMachine.BEENSTARTED_AND_COUNTING:
          m_enumState = enumCStopWatchStateMachine.BEEN_STARTED_AND_NOT_COUNTING;
          stateBEEN_STARTED_AND_NOT_COUNTING();
          break;
         case enumCStopWatchStateMachine.BEEN_STARTED_AND_NOT_COUNTING:
          //do nothing
          break;
        }
       }
      }

这些是秒表可以处于的状态以及每个状态的操作。

在此状态下，将缓存的差值清零。

      protected void stateSTOPPED_AND_NEVER_BEEN_STARTED()
      {
       m_intTimeEllapsedInMilliseconds = 0;
      }

在此状态下，返回 0。

      protected int stateRETURNING_ZERO()
      {
       return 0;
      }

在此状态下，将起始 DateTime 重置为 Now。

      protected void stateBEENSTARTED_AND_COUNTING()
      {
       m_tmStartDateTime = System.DateTime.Now;
      }

在此状态下，返回起始 datetime 和 now 之间的时间差 timeEllapsed + 缓存的差值。

      protected int stateRETURNING_DIFFERENCE_PLUS_CASHED_TIME_DIFFERENCE()
      {
       System.DateTime tmNow = System.DateTime.Now;
       return ((((((tmNow.Hour * (24 * 60 * 1000)) + 
        (tmNow.Minute * (60 * 1000))) + 
        (tmNow.Second * 1000)) + tmNow.Millisecond) - 
        ((((m_tmStartDateTime.Hour * 
        (24 * 60 * 1000)) + (m_tmStartDateTime.Minute * 
        (60 * 1000))) + (m_tmStartDateTime.Second * 1000)) + 
        m_tmStartDateTime.Millisecond))) + 
        m_intTimeEllapsedInMilliseconds;
      }

在此状态下，将缓存的差值设置为起始 datetime 和 now 之间的时间差 timeEllapsed + 缓存的差值。

      protected void stateBEEN_STARTED_AND_NOT_COUNTING()
      {
       System.DateTime tmNow = System.DateTime.Now;
       m_intTimeEllapsedInMilliseconds = ((((((tmNow.Hour * 
        (24 * 60 * 1000)) + 
        (tmNow.Minute * (60 * 1000))) + 
        (tmNow.Second * 1000)) + tmNow.Millisecond) - 
        ((((m_tmStartDateTime.Hour * (24 * 60 * 1000)) + 
        (m_tmStartDateTime.Minute * (60 * 1000))) + 
        (m_tmStartDateTime.Second * 1000)) + 
        m_tmStartDateTime.Millisecond))) + 
        m_intTimeEllapsedInMilliseconds;
      }

在此状态下，返回缓存的差值。

      protected int stateRETURNING_CASHED_TIME_DIFFERENCE()
      {
       return m_intTimeEllapsedInMilliseconds;
      }
     }

将 Windows 事件绑定到 CStopWatch 事件。

     public class CInCodeTimeTest : System.Windows.Forms.Form
     {
      CStopWatch m_StopWatch;
      private void CInCodeTimeTest_Load(object sender, System.EventArgs e)
      {m_StopWatch = new CStopWatch();}
      private void cmdReset_Click(object sender, System.EventArgs e)
      {m_StopWatch.reset();}
      private void cmdStart_Click(object sender, System.EventArgs e)
      {m_StopWatch.start();}
      private void cmdStop_Click(object sender, System.EventArgs e)
      {m_StopWatch.stop();}
      private void cmdDisplay_Click(object sender, System.EventArgs e)
      {txtOutPut.Text = m_StopWatch.getTimeEllapsedInMilliseconds().ToString();
      
      
      
      }
      private System.Windows.Forms.Button cmdReset;
      private System.Windows.Forms.Button cmdStart;
      private System.Windows.Forms.Button cmdStop;
      private System.Windows.Forms.Button cmdDisplay;
      private System.Windows.Forms.TextBox txtOutPut;
      #region ConstructAndDispose
      private System.ComponentModel.Container components = null;
      public CInCodeTimeTest(){
       InitializeComponent();
      }
      protected override void Dispose( bool disposing )
      {
       if( disposing ){
        if (components != null) {
         components.Dispose();
        }
       }
       base.Dispose( disposing );
      }
      #endregion
      #region Windows Form Designer generated code
      // <summary>
      // Required method for Designer support - do not modify
      // the contents of this method with the code editor.
      // </summary>
      private void InitializeComponent()
      {
       this.cmdReset = new System.Windows.Forms.Button();
       this.cmdStart = new System.Windows.Forms.Button();
       this.cmdStop = new System.Windows.Forms.Button();
       this.cmdDisplay = new System.Windows.Forms.Button();
       this.txtOutPut = new System.Windows.Forms.TextBox();
       this.SuspendLayout();
       // 
       // cmdReset
       // 
       this.cmdReset.Location = new System.Drawing.Point(0, 8);
       this.cmdReset.Name = "cmdReset";
       this.cmdReset.Size = new System.Drawing.Size(72, 24);
       this.cmdReset.TabIndex = 1;
       this.cmdReset.Text = "Reset";
       this.cmdReset.Click += new System.EventHandler(this.cmdReset_Click);
       // 
       // cmdStart
       // 
       this.cmdStart.Location = new System.Drawing.Point(72, 8);
       this.cmdStart.Name = "cmdStart";
       this.cmdStart.Size = new System.Drawing.Size(72, 24);
       this.cmdStart.TabIndex = 2;
       this.cmdStart.Text = "Start";
       this.cmdStart.Click += new System.EventHandler(this.cmdStart_Click);
       // 
       // cmdStop
       // 
       this.cmdStop.Location = new System.Drawing.Point(144, 8);
       this.cmdStop.Name = "cmdStop";
       this.cmdStop.Size = new System.Drawing.Size(72, 24);
       this.cmdStop.TabIndex = 3;
       this.cmdStop.Text = "Stop";
       this.cmdStop.Click += new System.EventHandler(this.cmdStop_Click);
       // 
       // cmdDisplay
       // 
       this.cmdDisplay.Location = new System.Drawing.Point(216, 8);
       this.cmdDisplay.Name = "cmdDisplay";
       this.cmdDisplay.Size = new System.Drawing.Size(72, 24);
       this.cmdDisplay.TabIndex = 4;
       this.cmdDisplay.Text = "Display";
       this.cmdDisplay.Click += new System.EventHandler(this.cmdDisplay_Click);
       // 
       // txtOutPut
       // 
       this.txtOutPut.Location = new System.Drawing.Point(92, 126);
       this.txtOutPut.Name = "txtOutPut";
       this.txtOutPut.Size = new System.Drawing.Size(104, 20);
       this.txtOutPut.TabIndex = 9;
       this.txtOutPut.Text = "";
       // 
       // CInCodeTimeTest
       // 
       this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
       this.ClientSize = new System.Drawing.Size(288, 273);
       this.Controls.AddRange(new System.Windows.Forms.Control[] {
                       this.txtOutPut,
                       this.cmdDisplay,
                       this.cmdStop,
                       this.cmdStart,
                       this.cmdReset});
       this.Name = "CInCodeTimeTest";
       this.Text = "In Code Time Test";
       this.Load += new System.EventHandler(this.CInCodeTimeTest_Load);
       this.ResumeLayout(false);
      }
      #endregion
      #region Main
      [STAThread]
      static void Main() 
      {
       Application.Run(new CInCodeTimeTest());
      }
      #endregion Main
     }
    }