写程序 控制cpu占用率-4 绘制CPU使用率的正弦曲线2 通过C#指定线程运行的 CPU

2011-10-13 19:52 460人阅读 评论(0) 收藏 举报

http://blog.csdn.net/weixingstudio/article/details/6870748 连接中的写了通过C#控制CPU的占用率。

 

通过C#还可以指定当前线程的运行在哪个CPU上。

 

通过

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1. System.Diagnostics.Process p = Process.GetCurrentProcess();  
2.             p.ProcessorAffinity = (IntPtr)0x0001;  

System.Diagnostics.Process p = Process.GetCurrentProcess();            p.ProcessorAffinity = (IntPtr)0x0001;

 

Process.ProcessorAffinity 设置当前CPU的屏蔽字，0x0001表示选用一号CPU，0x0002表示选用2号CPU。

 

代码如下：

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1. using System;  
2. using System.Collections.Generic;  
3. using System.Linq;  
4. using System.Text;  
5. using System.Diagnostics;  
6.   
7. namespace cpu_4_2_csharp  
8. {  
9.     class Program  
10.     {  
11.         static void Main(string[] args)  
12.         {  
13.             System.Diagnostics.Process p = Process.GetCurrentProcess();  
14.             p.ProcessorAffinity = (IntPtr)0x0001;  
15.   
16.             const int SAMPLING_COUNT = 200;  
17.             const double PI = 3.14159;  
18.             const int TOTAL_AMPLITUDE = 250; // the length of each time piece  
19.             //const int system_busy = 10; // take the system cpu consume into consideration  
20.   
21.             double[] busySpan=new double[SAMPLING_COUNT];  
22.             int amplitude = (TOTAL_AMPLITUDE) / 2;  
23.             double radian = 0.0;  
24.             double radianIncreament = 2.0 / (double)SAMPLING_COUNT;  
25.   
26.             for (int i = 0; i < SAMPLING_COUNT; i++)  
27.             {  
28.                 busySpan[i] = (double)(amplitude + Math.Sin(PI * radian) * amplitude);  
29.                 radian += radianIncreament;  
30.             }  
31.   
32.             int startTick = Environment.TickCount;  
33.   
34.             for (int j = 0; ; j = (j + 1) % SAMPLING_COUNT)  
35.             {  
36.                 startTick = Environment.TickCount;  
37.                 while ((Environment.TickCount - startTick) < busySpan[j])  
38.                 {  
39.                     //  
40.                 }  
41.                 System.Threading.Thread.Sleep(TOTAL_AMPLITUDE - (int)busySpan[j]);  
42.             }  
43.         }  
44.     }  
45. }  

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Diagnostics;namespace cpu_4_2_csharp{    class Program    {        static void Main(string[] args)        {            System.Diagnostics.Process p = Process.GetCurrentProcess();            p.ProcessorAffinity = (IntPtr)0x0001;            const int SAMPLING_COUNT = 200;            const double PI = 3.14159;            const int TOTAL_AMPLITUDE = 250; // the length of each time piece            //const int system_busy = 10; // take the system cpu consume into consideration            double[] busySpan=new double[SAMPLING_COUNT];            int amplitude = (TOTAL_AMPLITUDE) / 2;            double radian = 0.0;            double radianIncreament = 2.0 / (double)SAMPLING_COUNT;            for (int i = 0; i < SAMPLING_COUNT; i++)            {                busySpan[i] = (double)(amplitude + Math.Sin(PI * radian) * amplitude);                radian += radianIncreament;            }            int startTick = Environment.TickCount;            for (int j = 0; ; j = (j + 1) % SAMPLING_COUNT)            {                startTick = Environment.TickCount;                while ((Environment.TickCount - startTick) < busySpan[j])                {                    //                }                System.Threading.Thread.Sleep(TOTAL_AMPLITUDE - (int)busySpan[j]);            }        }    }}

程序的运行结果如图：

 

可以通过调整参数使曲线更加圆润一些，但是我调试了好久，也就得到了上面的截图。不过整体来说，这个曲线图要比http://blog.csdn.net/weixingstudio/article/details/6870748中的曲线图好看的多了