Re: Portable (as possible) sub-second timers

[Howard Chu]

Paul Smith wrote:
> Hi all;
>
> It doesn't seem that autoconf has any macros that provide for sub-second
> timers.  Is there any agreed-upon standard for managing this?  Is
> setitimer() the most portable option for sub-second timestamps?  Are
> there known portability issues with it?
>
> Should I check for usleep() if setitimer doesn't exist?  What about
> nanosleep()?  I expect many systems would need to realtime library
> (-lrt) linked to use nanosleep()?  Or not?

The tried-and-true method for the past 20-some years has been select() 
with no descriptor sets...

--
  -- Howard Chu
  Chief Architect, Symas Corp.  http://www.symas.com
  Director, Highland Sun        http://highlandsun.com/hyc
  OpenLDAP Core Team            http://www.openldap.org/project/