-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Pieter de Goeje wrote: > On Friday 08 August 2008, Carlos A. M. dos Santos wrote: >> On Thu, Aug 7, 2008 at 10:14 PM, Nate Eldredge <[EMAIL PROTECTED]> > 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. > > I think poll(2) is also simpler than select for this purpose. >
It does look like that, I need to check the implementation a bit, because the name of this thing makes me really suspicious about how often it checks for an fd for being ready for a read. I know select comes right back, I was under the impression that poll didn't use signals to do this. Anyhow, I sure do appreciate the hint, that's just exactly what I was asking for. Spending the time figuring it all out, that'll actually be fun for me. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkicrC8ACgkQz62J6PPcoOmYjACfWP/IGjSvak1hLYSJwWBKkTjb 8qUAoJfSYOZcPJKMqqUb3Y1mltG51sgI =USHT -----END PGP SIGNATURE----- _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
