SYNOPSIS

In sys/time.h Ft void Fn binuptime struct bintime *bt Ft void Fn getbinuptime struct bintime *bt Ft void Fn microuptime struct timeval *tv Ft void Fn getmicrouptime struct timeval *tv Ft void Fn nanouptime struct timespec *ts Ft void Fn getnanouptime struct timespec *tsp Ft sbintime_t Fn sbinuptime void Ft sbintime_t Fn getsbinuptime void

DESCRIPTION

The Fn binuptime and Fn getbinuptime functions store the time elapsed since boot as a Vt struct bintime at the address specified by Fa bt . The Fn microuptime and Fn getmicrouptime functions perform the same utility, but record the elapsed time as a Vt struct timeval instead. Similarly the Fn nanouptime and Fn getnanouptime functions store the elapsed time as a Vt struct timespec . The Fn sbinuptime and Fn getsbinuptime functions return the time elapsed since boot as a Vt sbintime_t .

The Fn binuptime , Fn microuptime , Fn nanouptime , and Fn sbinuptime functions always query the timecounter to return the current time as precisely as possible. Whereas Fn getbinuptime , Fn getmicrouptime , Fn getnanouptime , and Fn getsbinuptime functions are abstractions which return a less precise, but faster to obtain, time.

The intent of the Fn getbinuptime , Fn getmicrouptime , Fn getnanouptime , and Fn getsbinuptime functions is to enforce the user's preference for timer accuracy versus execution time.

AUTHORS

This manual page was written by An Kelly Yancey Aq [email protected] .