time

å称
     boottime, time_second, time_uptime — ã·ã¹ãã æå»å¤æ°

æ¸å¼
     <sys/time.h>
     extern struct timeval boottime;
     extern struct time_t time_second;
     extern struct timeval time_uptime;

解説
     boottime å¤æ°ã¯ã·ã¹ãã ã®ãã¼ãæå»ãä¿æãã¾ãã

     time_second å¤æ°ã¯ã·ã¹ãã ã® “æ±æ訔 ã¯ãã㯠(ç§) ã§ãã

     time_uptime å¤æ°ã¯ããã¼ããã¦ããã®ç§æ°ã§ãã

     bintime(9), getbintime(9), microtime(9), getmicrotime(9), nanotime(9),
     getnanotime(9) é¢æ°ã¯ãç¾å¨æå»ãããæ£ç¢ºã«ãä¸å¯åã«åå¾ãããã¨ãã§ãã¾ãã åæ§ã«
     binuptime(9), getbinuptime(9), microuptime(9), getmicrouptime(9),
     nanouptime(9), getnanouptime(9) é¢æ°ã¯ããã¼ããã¦ããã®çµéæéãããæ‐
     £ç¢ºã«ãä¸å¯åã«åå¾ãããã¨ãã§ãã¾ãã boottime å¤æ°ã¯ãç¹å¥ãªè¦æãªãã«èª‐
     ã¿æ¸ããããã¨ãã§ãã¾ãã

é¢é£é ç®
     clock_settime(2), ntp_adjtime(2), settimeofday(2), getbintime(9),
     getbinuptime(9), getmicrotime(9), getmicrouptime(9), getnanotime(9),
     getnanouptime(9), bintime(9), binuptime(9), microtime(9), microuptime(9),
     nanotime(9,) nanouptime(9) Poul-Henning Kamp, "Timecounters: Efficient
     and precise timekeeping in SMP kernels", Proceedings of EuroBSDCon 2002,
     Amsterdam, /usr/share/doc/papers/timecounter.ascii.gz.  Marshall Kirk
     McKusick and George V. Neville-Neil, The Design and Implementation of the
     FreeBSD Operating System, Addison-Wesley, 57-61,65-66, July 2004.