Messages in this thread | | | Date | Wed, 27 Jun 2001 11:16:08 -0700 | From | Christopher Smith <> | Subject | Re: A signal fairy tale |
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--On Wednesday, June 27, 2001 11:18:28 +0200 Jamie Lokier <lk@tantalophile.demon.co.uk> wrote: > Btw, this functionality is already available using sigaction(). Just > search for a signal whose handler is SIG_DFL. If you then block that > signal before changing, checking the result, and unblocking the signal, > you can avoid race conditions too. (This is what my programs do).
It's more than whether a signal is blocked or not, unfortunately. Lots of applications will invoke sigwaitinfo() on whatever the current signal mask is, which means you can't rely on sigaction to solve your problems. :-(
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