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From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: Typo in <sys/select.h>?
Date: Wed, 6 Jul 2022 16:17:04 +0200	[thread overview]
Message-ID: <YsWZYByhZp/+I1jx@calimero.vinschen.de> (raw)
In-Reply-To: <DM8PR09MB70957DF0C3E4AB75B8FCC2D2A5809@DM8PR09MB7095.namprd09.prod.outlook.com>

On Jul  6 13:19, Lavrentiev, Anton (NIH/NLM/NCBI) [C] via Cygwin wrote:
> > On Linux, select(2) is really only capable to
> > handle file descriptors numbers up to descriptor number 1023,
> 
> That is not true.  While FD_SETSIZE is defined as a fixed constant,
> Linux kernel does not actually "know" (or care) about it.

$ rpm -q man-pages
man-pages-5.12-2.fc35.noarch
$ man 2 select
[...]
DESCRIPTION
       WARNING: select() can monitor only file descriptors  numbers  that  are
       less  than  FD_SETSIZE (1024)—an unreasonably low limit for many modern
       applications—and this limitation will not change.  All modern  applica‐
       tions  should instead use poll(2) or epoll(7), which do not suffer this
       limitation.
[...]


Corinna

  reply	other threads:[~2022-07-06 14:17 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-06 13:19 Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2022-07-06 14:17 ` Corinna Vinschen [this message]
  -- strict thread matches above, loose matches on Subject: below --
2022-07-06 15:57 Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2022-07-06 17:03 ` Ken Brown
2022-07-06 14:26 Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2022-07-06 15:07 ` Corinna Vinschen
2022-07-06 14:17 Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2022-07-05 15:11 Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2022-07-05 14:13 Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2022-07-05 14:55 ` Andrey Repin
2022-07-05 21:51 ` Ken Brown
2022-07-06  7:42   ` Corinna Vinschen
2022-07-06 14:01     ` Jon Turney
2022-07-06 14:15       ` Corinna Vinschen
2022-07-06 14:22         ` Corinna Vinschen

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