NAME    [Toc]    [Back]

     microtime, getmicrotime, nanotime, getnanotime -- get the current time

SYNOPSIS    [Toc]    [Back]

     #include <sys/time.h>

     void
     microtime(struct timeval *tv);

     void
     getmicrotime(struct timeval *tv);

     void
     nanotime(struct timespec *ts);

     void
     getnanotime(struct timespec *tsp);

DESCRIPTION    [Toc]    [Back]

     The microtime() and getmicrotime() functions store the system time as a
     struct timeval at the address specified by tv.  The nanotime() and
     getnanotime() functions perform the same utility, but record the time as
     a struct timespec instead.

     Microtime() and nanotime() always query the timecounter to return the
     current time as precisely as possible.  Whereas getmicrotime() and
     getnanotime() functions are abstractions which return a less precise, but
     faster to obtain, time.

     The intent of the getmicrotime() and getnanotime() functions is to
     enforce the user's preference for timer accuracy versus execution time.

SEE ALSO    [Toc]    [Back]

     getmicrouptime(9), getnanouptime(9), microuptime(9), nanouptime(9),
     tvtohz(9)

HISTORY    [Toc]    [Back]

     The microtime and nanotime functions first appeared in FreeBSD 3.0 but
     existed in other incarnations since 4.4BSD

AUTHORS    [Toc]    [Back]

     This manual page was written by Kelly Yancey <kbyanc@posi.net>.


FreeBSD 5.2.1			January 3, 2000 		 FreeBSD 5.2.1