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From: devil@techunix.BITNET (Gil Tene)
Newsgroups: comp.unix.wizards
Subject: pause() reliability problems.
Message-ID: <9742@discus.technion.ac.il>
Date: 8 Jul 90 08:32:20 GMT
Sender: usenet@ucbvax.BERKELEY.EDU
Reply-To: devil%techunix.bitnet@jade.berkeley.edu (Gil Tene)
Organization: Technion, Israel Inst. Tech., Haifa Israel
Lines: 23

Hello unix folk,

I am having some trouble with process sync. on SunOS 4.0.3...
I am using signals (have no other choise, message queues don't
give me the ability to interrupt a process), and pause() on the
"other" end to wait for signals to arrive. I am running into
a problem where pause() will sometimes continue pausing, even though
a signal occured, and it's signal handler has run... This causes
deadlocks which can only be taken care of by kill from another process.
When I kill -30 the process that pauses, it comes out of the pause and
everything is fine again, until the next deadlock...

Is this reliability problem of pause() known ? is it a problem in
SunOS, or general unix, BSD, and SysV? Any ideas on how to solve this?

AdvThanks,

Gil.
--
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| Gil Tene                      "Some days it just doesn't pay     |
| devil@techunix.technion.ac.il   to go to sleep in the morning."  |
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