Date: Thu, 7 Aug 2008 23:50:45 -0300 From: "Carlos A. M. dos Santos" <unixmania@gmail.com> To: "Chuck Robey" <chuckr@telenix.org> Cc: Nate Eldredge <neldredge@math.ucsd.edu>, FreeBSD-Hackers <freebsd-hackers@freebsd.org> Subject: Re: read with timeout ?? Message-ID: <e71790db0808071950j32e196e4o42fab1aeb62ab8a4@mail.gmail.com> In-Reply-To: <Pine.GSO.4.64.0808071813530.11980@zeno.ucsd.edu> References: <489B9D4D.4010009@telenix.org> <Pine.GSO.4.64.0808071813530.11980@zeno.ucsd.edu>
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On Thu, Aug 7, 2008 at 10:14 PM, Nate Eldredge <neldredge@math.ucsd.edu> wrote: > On Thu, 7 Aug 2008, Chuck Robey wrote: > >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> I have my head lost in a code problem. I just hit a point where I need to >> do a >> read from an fd, but I need to associate it with a timeout, on the order >> of 1 >> second, something like that. I had the feeling that there's a function in >> FreeBSD's libc that makes that simple, but I forget the function name. If >> anyone can remember something like what I'm talking about, I sure would >> appreciate a function name. I can figure out how it works, if I could >> only >> dredge up that name. > > man 2 select If the fd is a socket then you can also use setsockopt(2) to set SO_RCVTIMEO and check for EWOULDBLOCK (same as EAGAIN) upon read(2) or recv(2) errors. The net effect is the same of using select but the syntax is simpler, IMO. -- If you think things can't get worse it's probably only because you lack sufficient imagination.
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