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Date: Wed, 12 Nov 2008 15:22:11 -0500
From: Mikhail Teterin <mi+mill@aldan.algebra.com>
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To: Daniel Eischen <deischen@freebsd.org>
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Cc: Kostik Belousov <kostikbel@gmail.com>, stable@freebsd.org
Subject: Re: dlopen-ing a library with OpenMP by a non-OpenMP process
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Sent by Daniel Eischen:
> No, I simply meant that you saw it was returning bad system
> call from sem_init/ksem_init.
Instead, I suspected, that it is the OpenMP, that's at fault. I'm sorry 
for failing to live up to your expectations of a true FreeBSD user.
> A little investigation would have turned up the reason.  If you want 
> to debate whether or
> not P1003_1B_SEMAPHORES should be standard, that is another
> issue, which I might actually agree with.
Well, I'm sure, the debate on including P1003_1B_SEMAPHORES by default 
has already raged before...
No, what I was suggesting, was that sem_init -- not the system call, but 
the C-function -- should be more intelligent in detecting such 
situations and reporting them instead of crashing...
Either the C-function, or, maybe, the no-op implementation of 
(k)sem_init in the kernel ought to have told me (even if only in the 
kernel log), that I need to kldload sem and refer to the man-page. 
That's what well-integrated Operating Systems do, anyway...

    -mi