Article View: pl.comp.os.linux.programowanie
Article #72843Re: Czekanie na wolny bufor portu szeregowego - co robię źle?!?
From: spryciarzsprytny7
Date: Tue, 10 Jul 2018 06:13
Date: Tue, 10 Jul 2018 06:13
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2113 bytes
> Funkcja select() i pochodne usuwają deskryptory ze zbiorów. Jak możesz tak pisać, skoro select/pselect zwraca liczbę gotowych do pracy deskryptorów i one są w tej strukturze fd_set - sprawdza się je makrem FD_ISSET(). Inna sprawa: co w sytuacji gdy ta struktura ponownie zostanie podana do pselect/slelect gdy ma już ustawiony bit "set". I w dodatku co to znaczy: Return Value: Upon successful completion, the pselect() and select() functions shall return the total number of bits set in the bit masks. Co to za maska bitowa?!? Czy to to samo co: "zwraca liczbę deskryptorów gotowych do pracy"?!?
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X-Received: by 2002:a0c:e601:: with SMTP id z1-v6mr13606741qvm.33.1531203230761; Mon, 09 Jul 2018 23:13:50 -0700 (PDT) X-Received: by 2002:ac8:1189:: with SMTP id d9-v6mr1881112qtj.5.1531203230636; Mon, 09 Jul 2018 23:13:50 -0700 (PDT) Path: mbox-mo1.pugleaf.net!news-archive.icm.edu.pl!news.icm.edu.pl!news.nask.pl!news.nask.org.pl!news.unit0.net!weretis.net!feeder6.news.weretis.net!feeder.usenetexpress.com!feeder-in1.iad1.usenetexpress.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!f6-v6no2355538qth.0!news-out.google.com!a20-v6ni1021qtj.1!nntp.google.com!f6-v6no2355526qth.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: pl.comp.os.linux.programowanie Date: Mon, 9 Jul 2018 23:13:50 -0700 (PDT) In-Reply-To: <5b40c2ff$0$602$65785112@news.neostrada.pl> Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=5.226.117.166; posting-account=gLUTRAoAAADr4_ywPlZaMoP-wsVeFJh_ NNTP-Posting-Host: 5.226.117.166 References: <691200d3-8311-4c65-a7a5-f3f0820760c6@googlegroups.com> <5b40c2ff$0$602$65785112@news.neostrada.pl> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <141fafeb-65fd-4782-a555-5d29960b3f1c@googlegroups.com> Subject: Re: Czekanie na wolny bufor portu szeregowego - co robię źle?!? From: spryciarzsprytny7@gmail.com Injection-Date: Tue, 10 Jul 2018 06:13:50 +0000 Lines: 15 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit