Xref: utzoo alt.sys.sun:3990 comp.unix.programmer:1898
Path: utzoo!utgpu!cs.utexas.edu!natinst!brian
From: brian@natinst.com (Brian H. Powell)
Newsgroups: alt.sys.sun,comp.unix.programmer
Subject: ualarm doesn't always start
Message-ID: <23595@natinst.natinst.com>
Date: 24 May 91 15:50:42 GMT
Followup-To: poster
Organization: National Instruments, Austin, TX
Lines: 22


     This is on a SPARCstation 2, running SunOS 4.1.1B.  This behavior happens
with two different C compilers.

     I've got a program which installs a signal handler for SIGALRM, then
calls
	ualarm(55000, 55000);
which is supposed to send an ALRM signal in 55000 microseconds, and keep
sending them every 55000 microseconds after that.
     The first two times I run the program after compiling it, the ualarm
doesn't work; I don't get a SIGALRM.  (I can send it by hand, so I know
my handler is installed.)
     The third and subsequent times I run the program, it seems to function
normally.  (Until I recompile.)
     What am I doing wrong?

     Please respond by email.  I'll summarize if there's any interest.

Brian H. Powell, M/S 56-14			National Instruments Corp.
	brian@natinst.com			6504 Bridge Point Parkway
	uunet!cs.utexas.edu!natinst!brian	Austin, Texas 78730-5039
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