Hello,
I was messing around with some signals on AIX using ksh93t and stumbled across
the Signal of SIGWAITING and noticed that in the kernel debugger that ksh93 has
a signal Handler for the SIGWAITING signal which is sh_fault. When I looked at
the sh_fault code I didn't find any case where we handle the signal once it is
sent and trapped by ksh93 to deal with it. So I guess what I am asking is that
on aix this signal is signal #39 does ksh93 have a reason for wanting to trap
this signal instead of having it setup to be SIG_DFL or SIG_IGN so that the
default action/Ignore will be taken once it is received?
I found some code that I though would have made sure that the signal wouldn't
be caught by the shell here is what I found below:
in data/signals.c
#ifdef SIGWAITING
"WAITING", VAL(SIGWAITING,SH_SIGIGNORE), S("All threads
blocked"),
#endif /* SIGWAITING */
Any help in understanding this would be much appreciated.
Thanks,
Leon
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