Linux获取系统当前时间(精确到毫秒)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | #include <stdio.h> #include <time.h> #include <sys/time.h> 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.%ld\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; } |
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