Date: Fri, 29 Sep 2000 02:16:39 -0700 From: Alfred Perlstein <bright@wintelcom.net> To: Roman Shterenzon <roman@harmonic.co.il> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: pthreads bug? Message-ID: <20000929021639.D27736@fw.wintelcom.net> In-Reply-To: <970217520.39d4583032fbe@webmail.harmonic.co.il>; from roman@harmonic.co.il on Fri, Sep 29, 2000 at 10:52:00AM %2B0200 References: <970215688.39d451088fbef@webmail.harmonic.co.il> <20000929013521.C27736@fw.wintelcom.net> <970217520.39d4583032fbe@webmail.harmonic.co.il>
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* Roman Shterenzon <roman@harmonic.co.il> [000929 01:52] wrote: > Quoting Alfred Perlstein <bright@wintelcom.net>: > > > I attach example program, which, when receives SIGUSR1 should close > > the socket, > > > but, in fact gets blocked in the close() function. > > > Obviously it's waiting to acquire some lock. > > > Does anyone have an idea? > > > > Yes, I have an idea and an idea how to fix it, I'm wondering what > > the thread in accept() sees after this happens? > > > > what is the errno from accept? > The point is, that when close() is called, accept doesn't break out. > > from close(2) > IMPLEMENTATION NOTES > In the non-threaded library close() is implemented as the close syscall. > > In the threaded library, the close syscall is assembled to > _thread_sys_close() and close() is implemented as a function which locks > d for read and write, then calls _thread_sys_close(). Before returning, > close() unlocks d. > > > So from my point of view the close tries to acquire a lock. I know that, I should have been more clear, what is in errno on Linux and Solaris so that I can emulate that? -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] "I have the heart of a child; I keep it in a jar on my desk." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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