linux下获取当前时间（精确到毫秒）

#include   
#include   
#include   

void sysLocalTime()  
{  
    time_t             timesec;  
    struct tm         *p;  


    time(×ec);
    p = localtime(×ec);  

    printf("%d%d%d%d%d%d\n", 1900+p->tm_year, 1+p->tm_mon, p->tm_mday, p->tm_hour, p->tm_min, p->tm_sec);  

}  

void sysUsecTime()  
{  
    struct timeval    tv;  
    struct timezone tz;  

    struct tm         *p;  

    gettimeofday(&tv, &tz);  
    printf("tv_sec:%ld\n",tv.tv_sec);  
    printf("tv_usec:%ld\n",tv.tv_usec);  
    printf("tz_minuteswest:%d\n",tz.tz_minuteswest);  
    printf("tz_dsttime:%d\n",tz.tz_dsttime);  

    p = localtime(&tv.tv_sec);  
    printf("time_now:%d /%d /%d %d :%d :%d.%3ld\n", 1900+p->tm_year, 1+p->tm_mon, p->tm_mday, p->tm_hour, p->tm_min, p->tm_sec, tv.tv_usec);  
}  

int main(void)  
{  
    sysLocalTime();  
    printf("============gettimeofday==============\n");  

    sysUsecTime();  

    return 0;  
}