Date: Wed, 12 Nov 2008 15:12:55 -0500 (EST) From: Daniel Eischen <deischen@freebsd.org> To: Mikhail Teterin <mi+mill@aldan.algebra.com> Cc: Kostik Belousov <kostikbel@gmail.com>, stable@freebsd.org Subject: Re: dlopen-ing a library with OpenMP by a non-OpenMP process Message-ID: <Pine.GSO.4.64.0811121509330.4280@sea.ntplx.net> In-Reply-To: <491B3653.5080209@aldan.algebra.com> References: <491B1BD2.4050903@aldan.algebra.com> <20081112194350.GJ47073@deviant.kiev.zoral.com.ua> <491B3270.5080402@aldan.algebra.com> <Pine.GSO.4.64.0811121451260.4280@sea.ntplx.net> <491B3653.5080209@aldan.algebra.com>
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On Wed, 12 Nov 2008, Mikhail Teterin wrote: > Sent by Daniel Eischen: >> On Wed, 12 Nov 2008, Mikhail Teterin wrote: >> >>> Sent by Kostik Belousov: >>>> On Wed, Nov 12, 2008 at 01:09:22PM -0500, Mikhail Teterin wrote: >>>> >>>>> Hello! >>>>> >>>>> Currently, when a program built without OpenMP (-fopenmp) is trying to >>>>> dlopen a library, built with the feature, the result is a crash from >>>>> "bad system call": >>>>> >>>>> #0 0x00000008009a223c in ksem_init () from /lib/libc.so.7 >>>>> #1 0x0000000800998a8f in sem_init () from /lib/libc.so.7 >>> Uhm... That worked... I see... Shouldn't sem_init be nicer about it, >>> though? Thanks, >> Or perhaps you should read sem(4) ;-) > Daniel, what are saying? That it is all my own fault? Generic kernel does not > have sem in it... I build a port with an option (OpenMP), that make perfect > sense, and try to use it. Software crashes... > There is a bug -- and you, instead of contemplating a fix, are telling me to > read a man-page? Wow... No, I simply meant that you saw it was returning bad system call from sem_init/ksem_init. 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. -- DE
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