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Re: [rtems] Tweaks to sys/features.h
Howland Craig D (Craig) wrote:
_SC_SHARED_MEMORY_OBJECTS is the sysconf() identifier that goes
with
_POSIX_SHARED_MEMORY_OBJECTS. They are in libc/sys/linux/sysconf.c.
Thanks. I have a patch waiting for our sysconf() once
Ralf's patch with this -1 is committed. :)
--joel
Craig
-----Original Message-----
From: Joel Sherrill [mailto:joel.sherrill@oarcorp.com]
Sent: Thursday, November 20, 2008 1:33 PM
Howland Craig D (Craig) wrote:
Wouldn't it be better to define _POSIX_SHARED_MEMORY_OBJECTS with
value
-1 than to have it not defined? That way it is known at compile time
that there is no support, rather than needing to wait for runtime for
a
sysconf() call.
If that's what people are expecting to test for then yes.
And FWIW RTEMS supports sysconf() but doesn't have
a lot of cases in its implementation. What sysconf value
covers this one?
--joel
--
Joel Sherrill, Ph.D. Director of Research & Development
joel.sherrill@OARcorp.com On-Line Applications Research
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