cvs commit: src/lib/libc/sys select.2

Matthew Dillon dillon at
Wed Aug 3 08:14:41 PDT 2005

:On Wed, Aug 03, 2005 at 05:44:23AM -0700, Simon Schubert wrote:
:> corecode    2005/08/03 05:44:23 PDT
:> DragonFly src repository
:>   Modified files:
:>     lib/libc/sys         select.2 
:>   Log:
:>   Note that select behaves like sleep(3) when no descriptors are being checked.
:Please correct it to point to usleep or nanosleep, that comparision is
:much more appropiate.

    Even nanosleep and usleep are wrong, since nanosleep uses a struct timespec
    and select uses a struct timeval.

    Select's timeout is rounded up to the nearest clock tick, while (our) 
    nanosleep's timeout tries to be a lot more precise.

					Matthew Dillon 
					<dillon at xxxxxxxxxxxxx>

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