Patch for 2.12 utilize sched_yield instead of sleep in event_loop attached for comments

[Thomas Guyot-Sionnest]

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On 28/04/09 04:37 PM, eponymous alias wrote:
> It seems unlikely that you would want to
> #include <sched.h>
> unconditionally and then only conditionally
> invoke sched_yield().
> 
> If you are going to conditionally invoke
> sched_yield(), then it ought to be done for
> the __sun__ platform as well.  And for that
> matter, the appropriate preprocessor symbols
> for non-GCC compilers ought to be checked
> as well.  Probably better overall is to
> depend instead on some global flag of your
> own which is not platform-specific, much like
> the ./configure --enable-event-broker option
> generates the USE_EVENT_BROKER flag.
>

Hi,

I'm not sure if you guys seen my post in the other related thread; why
not use _POSIX_PRIORITY_SCHEDULING?

Regarding the include of <sched.h>, if you believe it could be missing
it could be detected by autoconf with the AC_CHECK_HEADER macro (the
sched_yield block would therefore be conditional of both
_POSIX_PRIORITY_SCHEDULING and HAVE_SCHED_H).


- From my original post:
>
> I looked at the sched_yield() man page and found the following
> statement:
>
> POSIX systems on which sched_yield() is available define
> _POSIX_PRIORITY_SCHEDULING in <unistd.h>.
>
> That would make is work on more systems. My Solaris 10 server has it.
>

- --
Thomas
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