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- Xref: sparky comp.unix.wizards:3784 comp.unix.questions:10707
- Newsgroups: comp.unix.wizards,comp.unix.questions
- Path: sparky!uunet!gatech!ncar!noao!rstevens
- From: rstevens@noao.edu (W. Richard Stevens)
- Subject: Re: reliable signals under BSD / SVR4
- Message-ID: <1992Sep3.231707.17858@noao.edu>
- Keywords: signals, reliable, software interrupts
- Sender: news@noao.edu
- Nntp-Posting-Host: gemini.tuc.noao.edu
- Organization: National Optical Astronomy Observatories, Tucson, AZ, USA
- References: <acourtny.715263267@unix1.tcd.ie> <Btwqvs.LAI@zeus.dialix.oz.au> <acourtny.715556934@unix1.tcd.ie>
- Date: Thu, 3 Sep 1992 23:17:07 GMT
- Lines: 15
-
- >Has anyone investigated other models for signal delivery?
-
- In the SVR4 sigaction(2) man page under SA_SIGINFO it says that the
- signals are "reliably queued." Apparently SVR4 can provide queued
- signals, but someone-in-the-know told me that Sun made AT&T take this
- feature out (when they were working on SVR4 together). Perhaps POSIX.4
- will have them put it back in ...
-
- >Come to think of it, doesn't it make it somewhat "tricky" to use
- > async. I/O at all?
-
- I've yet to find a real application that actually uses BSD's SIGIO.
- Has anyone seen one?
-
- Rich Stevens (rstevens@noao.edu)
-