linux下C语言实现程序时间测试

#include<unistd.h>

#include<sys/time.h>

#include<stdio.h>

#include<stdlib.h>

#include<signal.h>

#include<string.h>

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);

}