The bintime and getbintime functions store the system time as a
.Vt "struct bintime" at the addresses specified by bt. The microtime and getmicrotime functions perform the same utility, but record the time as a
.Vt "struct timeval" instead. Similarly the nanotime and getnanotime functions store the time as a
.Vt "struct timespec" .
The bintime, microtime, and nanotime functions always query the timecounter to return the current time as precisely as possible. Whereas getbintime, 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 users preference for timer accuracy versus execution time.
binuptime(9), getbinuptime(9), getmicrouptime(9), getnanouptime(9), microuptime(9), nanouptime(9), tvtohz(9)