R has its own signal handlers, including for SIGINT.
What is your 'extension'? If it is a program embedding R, the order of
setting signal handlers will matter, and in any case R's handler if ever
called it will reset the handler to itself.
If it is a package, it should not be messing with the process into which
it is loaded.
On 17/11/2012 15:56, Ulrich Staudinger wrote:
Hello everyone,
I am searching and searching and can't find an answer.
Did you search the source code?
I try to register a sighandler in my extension's C code. But my
sighandler is never called. Is there anything preventing extensions to
receive signals?
I register like this:
[.. some code that works ..]
// register the sigint listeners.
if (signal(SIGTERM, killReceiver) == SIG_ERR) {
printf("2 An error occurred while setting a signal
handler.%s\n", stderr);
}
if (signal(SIGHUP, killReceiver) == SIG_ERR) {
printf("3 An error occurred while setting a signal
handler.%s\n", stderr);
}
if (signal(SIGINT, killReceiver) == SIG_ERR) {
printf("4 An error occurred while setting a signal
handler.%s\n", stderr);
}
[.. even more code that works ..]
handler code:
static void killReceiver(int signum){
printf("Cleaning up\n");
}
When I exit R, my signal handler is not being called. Am I listening
to the right signals? Do I have some misunderstanding on my side?
Funny side story, if I manually raise(SIGINT), my handlers gets called.
Thanks for some light on this,
Ulrich
--
Ulrich Staudinger
P: +41 79 702 05 95
E: ustaudin...@activequant.com
http://www.activequant.com
Connect online: https://www.xing.com/profile/Ulrich_Staudinger
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--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax: +44 1865 272595
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