linux下C语言实现程序时间测试

#include
#include
#include
#include
#include
#include 

main(int argc,char * args[]){
  long start_sec,end_sec,start_usec,end_usec;
  struct timeval tv;
  double         duration;

  gettimeofday(&tv,NULL);
  start_sec=tv.tv_sec;
  start_usec=tv.tv_usec;

  YOUR_PROGRAM();

  gettimeofday(&tv,NULL);
  end_sec=tv.tv_sec;
  end_usec=tv.tv_usec;
  duration =(double)(end_usec-start_usec)/1000+(end_sec-start_sec)*1000;
  printf("Runtime :%.2f ms\n",duration);
}