Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!cs.utexas.edu!rice!hsdndev!cmcl2!adm!news
From: TAYBENGH%NUSDISCS.BITNET@cunyvm.cuny.edu (THE AGEIS)
Newsgroups: comp.unix.wizards
Subject: Summary - lost of SIGIO signal in SunOS4.1/4.0.3
Message-ID: <27089@adm.brl.mil>
Date: 3 Jun 91 00:54:24 GMT
Sender: news@adm.brl.mil
Lines: 15


        The answer of my question is:
        Although the Sun DOES provide reliable signal, it does NOT mean
a signal counter is kept. If there are 2 instances of a same signal say SIGIO
are asserted before the first one can be serviced, only one of them will be
delivered. As a result, to handle signal properly, one must write code in such
a way that when a signal is received, it checks for all the work that may be
available from any number of a particular signal and does it all. In my case,
I use the value of the semaphore sets to check.
        Thanks for the people who helps, and sorry abt my ignorance of the true
meaning abt the reliable signal.

- Beng-Hang Tay (email: taybengh@nusdiscs.bitnet)
  Dept of Info Syst. and Comp. Sc.
  National University of Singapore