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#include <stdio.h>
#include <signal.h>
#include <unistd.h>
#include <stdlib.h>
static int sigalrm_received = 0;
static void sigalrm_handler(int signr)
{
sigalrm_received++;
}
static int sigrtmin_received = 0;
static void sigrtmin_handler(int signr)
{
sigrtmin_received++;
}
static int breakme = 0;
#ifndef SIGRTMIN
// at least on MacOS, there is no SIGRTMIN.
// So, use any other signal instead.
#define SIGRTMIN SIGUSR1
#endif
int main (int argc, char *argv[])
{
struct sigaction sa;
fprintf(stderr, "starting ...\n");
sa.sa_handler = sigalrm_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction (SIGALRM, &sa, NULL) != 0)
perror("sigaction");
if (kill(getpid(), SIGALRM) != 0)
perror("kill 1");
if (sigalrm_received == 1)
fprintf (stderr, "ok: 1st SIGALRM received\n");
else
fprintf (stderr, "wrong 1st: unexpected value %d sigalrm_received\n",
sigalrm_received);
if (kill(getpid(), SIGALRM) != 0)
perror("kill 2");
if (sigalrm_received == 2)
fprintf (stderr, "ok: 2nd SIGALRM received\n");
else
fprintf (stderr, "wrong 2nd: unexpected value %d sigalrm_received\n",
sigalrm_received);
system("../tests/true");
breakme++;
sa.sa_handler = sigrtmin_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction (SIGRTMIN, &sa, NULL) != 0)
perror("sigaction");
if (kill(getpid(), SIGRTMIN) != 0)
perror("kill sigrtmin");
if (sigrtmin_received == 1)
fprintf (stderr, "ok: SIGRTMIN received\n");
else
fprintf (stderr, "wrong sigrtmin: unexpected value %d sigrtmin_received\n",
sigrtmin_received);
return 0;
}
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