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     TIME(2)                                                   TIME(2)

     NAME
          time, nsec, uptime, fastticks - time in seconds and
          nanoseconds

     SYNOPSIS
          #include <u.h>
          #include <libc.h>

          long time(long *tp)

          vlong nsec(void)

          vlong uptime(void)

          uvlong fastticks(uvlong *hz)

     DESCRIPTION
          Both time and nsec return the time since the epoch 00:00:00
          GMT, Jan. 1, 1970.  The return value of the former is in
          seconds and the latter in nanoseconds.  For time, if tp is
          not zero then *tp is also set to the answer.

          Uptime returns monotonically increasing nanoseconds since
          boot.

          Fastticks returns clock cycles from the highest precision
          clock in the system.  If hz is not nil then *hz is set to
          the cycle frequency of the high precision clock.

          These functions work by reading /dev/bintime.

     SOURCE
          /sys/src/libc/9sys/time.c
          /sys/src/libc/9sys/nsec.c

     SEE ALSO
          cputime(2), cons(3)

     DIAGNOSTICS
          Sets errstr.

     Page 1                       Plan 9            (printed 10/25/26)