On Sun, May 13, 2001 at 10:32:45AM -0700, Lee Chin wrote: > Hi, > On the same topic.... who is responsible for freeing > the struct hostent structure returned by > gethostbyname? It is internal static data to that function. NOT safe for multithreaded access, NOT valid after the next call to gethostbyname(). > Thanks > Lee /Matti Aarnio > --- Mark Hahn <hahn@coffee.psychology.mcmaster.ca> > wrote: > > > gethostbyname just takes too long once in a while > > on > > > certain sites... is there a way to set a time out > > for > > > gethostbyname? > > > > that's the right approach, I think. you might try > > plain old signal(connect_timeout,SIGALRM), since > > the sigaction stuff is somewhat complicated. > > > > > I tried this: > > > act.sa_flags = SA_NOMASK; > > > act.sa_handler = connect_timeout; > > > sigaction(SIGALRM, &act, NULL); > > > alarm(DNS_TIMEOUT); > > > hostentry = gethostbyname(host); > > > alarm(0); > > > > > > but when the alarm happened, I got a SIGSEGV in > > > gethostbyname > > > > could you strace this? gethostbyname is actually a > > libc > > thing, so it could well be that libc is simply not > > dealing > > with some syscall (probably a sendmsg to a > > nameserver) > > getting EINTR. > > > > > __________________________________________________ > Do You Yahoo!? > Yahoo! Auctions - buy the things you want at great prices > http://auctions.yahoo.com/ > - > : send the line "unsubscribe linux-net" in > the body of a message to majordomo@vger.kernel.org - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org
