如何调用函数在linux下获取单个进程得内存、CPU使用率

kongrenxin

献一段代码，供参考：

1. //获取用户空间的cpu占用率
   
2. static float GetUserCpuPercent()
   
3. {
   
4.         char name[64] = {0};
   
5.         char buffer[1024] = {0};
   
6.        
   
7.         static int user0 = 0, total0 = 0;
   
8.         int user1, nice, sys, idle, iowait, irq, softirq, total1 = 0;        
   
9.         float fRet = 0.0;
   
10. 
    
11.         FILE *fp = fopen("/proc/stat","r");
    
12.         if(!fp)
    
13.         {
    
14.                 fprintf(stderr,"fopen failed:%s\n",strerror(errno));
    
15.                 return -1.0;
    
16.         }
    
17.         fgets(buffer,sizeof(buffer),fp);
    
18.         sscanf(buffer,"%s %d %d %d %d %d %d %d",name,&user1,&nice,&sys,&idle,&iowait,&irq,&softirq);
    
19.         total1 = user1+nice+sys+iowait+irq+softirq+idle;
    
20.         fRet = (user1-user0)*100/(double)(total1-total0);
    
21.         user0 = user1;
    
22.         total0 = total1;
    
23.         fclose(fp);
    
24.         return fRet;
    
25. }

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