Date: Mon, 3 Jan 2000 11:13:17 -0500 (EST) From: Kelly Yancey <kbyanc@posi.net> To: hackers@freebsd.org Subject: microtime vs getmicrotime Message-ID: <Pine.BSF.4.05.10001031059001.11032-100000@kronos.alcnet.com>
next in thread | raw e-mail | index | archive | help
Scanning through sys/kern_clock.c it looks like getmicrotime is
preferable to microtime since only getmicrotime accounts for
tco_method (set via the kern.timecounter sysctl). The same is true with
getnanotime vs nanotime, etc.
However, I've noticed a good bit of kernel code is still calling
microtime and nanotime rather than the get- versions:
$ cd /usr/src/sys; grep -Rw microtime * | wc -l
85
$ cd /usr/src/sys; grep -Rw nanotime * | wc -l
12
$ cd /usr/src/sys; grep -Rw getmicrotime * | wc -l
39
$ cd /usr/src/sys; grep -Rw getnanotime * | wc -l
23
Is there are reason for code to still use the {micro,nano}time functions
as opposed to get{micro,nano}time?
I should point out that I am looking at a recently-supped 3.4 source
tree. Although my friend cvsweb says that -current code is still calling
{micro,nano}time also.
Thanks,
Kelly
--
Kelly Yancey - kbyanc@posi.net - Richmond, VA
Analyst / E-business Development, Bell Industries http://www.bellind.com/
Maintainer, BSD Driver Database http://www.posi.net/freebsd/drivers/
Coordinator, Team FreeBSD http://www.posi.net/freebsd/Team-FreeBSD/
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.05.10001031059001.11032-100000>