FreeBSD Manual Pages
MICROTIME(9) Kernel Developer's Manual MICROTIME(9) NAME bintime, getbintime, microtime, getmicrotime, nanotime, getnanotime -- get the current time SYNOPSIS #include <sys/time.h> void bintime(struct bintime *bt); void getbintime(struct bintime *bt); void microtime(struct timeval *tv); void getmicrotime(struct timeval *tv); void nanotime(struct timespec *ts); void getnanotime(struct timespec *tsp); DESCRIPTION The bintime() and getbintime() functions store the system time as a struct bintime at the addresses specified by bt. The microtime() and getmicro- time() functions perform the same utility, but record the time as a struct timeval instead. Similarly the nanotime() and getnanotime() functions store the time as a struct timespec. The bintime(), microtime(), and nanotime() functions always query the time- counter to return the current time as precisely as possible. Whereas get- bintime(), getmicrotime(), and getnanotime() functions are abstractions which return a less precise, but faster to obtain, time. The intent of the getbintime(), getmicrotime(), and getnanotime() functions is to enforce the user's preference for timer accuracy versus execution time. SEE ALSO binuptime(9), getbinuptime(9), getmicrouptime(9), getnanouptime(9), mi- crouptime(9), nanouptime(9), tvtohz(9) HISTORY The bintime functions first appeared in FreeBSD 5.0. The microtime and nanotime functions first appeared in FreeBSD 3.0 but have existed in other incarnations since 4.4BSD. AUTHORS This manual page was written by Kelly Yancey <kbyanc@posi.net>. FreeBSD ports 15.1 September 16, 2004 MICROTIME(9)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS
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