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/* $OpenBSD: sigmask.c,v 1.2 2003/07/14 22:01:42 marc Exp $ */
/* PUBLIC DOMAIN July 2003 Marco S Hyman <marc@snafu.org> */
#include <sys/time.h>
#include <pthread.h>
#include <signal.h>
#include <unistd.h>
#include "test.h"
/*
* Test that masked signals with a default action of terminate process
* do NOT terminate the process.
*/
int main (int argc, char *argv[])
{
sigset_t mask;
int sig;
/* any two (or more) command line args should cause the program
to die */
if (argc > 2) {
printf("trigger sigalrm[1] [test should die]\n");
ualarm(100000, 0);
CHECKe(sleep(1));
}
/* mask sigalrm */
CHECKe(sigemptyset(&mask));
CHECKe(sigaddset(&mask, SIGALRM));
CHECKe(pthread_sigmask(SIG_BLOCK, &mask, NULL));
/* now trigger sigalrm and wait for it */
printf("trigger sigalrm[2] [masked, test should not die]\n");
ualarm(100000, 0);
CHECKe(sleep(1));
/* sigwait for sigalrm, it should be pending. If it is not
the test will hang. */
CHECKe(sigwait(&mask, &sig));
ASSERT(sig == SIGALRM);
/* make sure sigwait didn't muck with the mask by triggering
sigalrm, again */
printf("trigger sigalrm[3] after sigwait [masked, test should not die]\n");
ualarm(100000, 0);
CHECKe(sleep(1));
/* any single command line arg will run this code wich unmasks the
signal and then makes sure the program terminates when sigalrm
is triggered. */
if (argc > 1) {
printf("trigger sigalrm[4] [unmasked, test should die]\n");
CHECKe(pthread_sigmask(SIG_UNBLOCK, &mask, NULL));
ualarm(100000, 0);
CHECKe(sleep(1));
}
SUCCEED;
}
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