gdbserver_tests/passsigalrm.c

   1 #include <stdio.h>
   2 #include <signal.h>
   3 #include <unistd.h>
   4 #include <stdlib.h>
   5
   6 static int sigalrm_received = 0;
   7 static void sigalrm_handler(int signr)
   8 {
   9    sigalrm_received++;
  10 }
  11 static int sigrtmin_received = 0;
  12 static void sigrtmin_handler(int signr)
  13 {
  14    sigrtmin_received++;
  15 }
  16
  17 static int breakme = 0;
  18 #ifndef SIGRTMIN
  19 // at least on MacOS, there is no SIGRTMIN.
  20 // So, use any other signal instead.
  21 #define SIGRTMIN SIGUSR1
  22 #endif
  23
  24 int main (int argc, char *argv[])
  25 {
  26    struct sigaction sa;
  27    fprintf(stderr, "starting ...\n");
  28    sa.sa_handler = sigalrm_handler;
  29    sigemptyset(&sa.sa_mask);
  30    sa.sa_flags = 0;
  31
  32    if (sigaction (SIGALRM, &sa, NULL) != 0)
  33       perror("sigaction");
  34    if (kill(getpid(), SIGALRM) != 0)
  35       perror("kill 1");
  36
  37    if (sigalrm_received == 1)
  38       fprintf (stderr, "ok: 1st SIGALRM received\n");
  39    else
  40       fprintf (stderr, "wrong 1st: unexpected value %d sigalrm_received\n",
  41                sigalrm_received);
  42
  43    if (kill(getpid(), SIGALRM) != 0)
  44       perror("kill 2");
  45
  46    if (sigalrm_received == 2)
  47       fprintf (stderr, "ok: 2nd SIGALRM received\n");
  48    else
  49       fprintf (stderr, "wrong 2nd: unexpected value %d sigalrm_received\n",
  50                sigalrm_received);
  51
  52    system("../tests/true");
  53    breakme++;
  54
  55    sa.sa_handler = sigrtmin_handler;
  56    sigemptyset(&sa.sa_mask);
  57    sa.sa_flags = 0;
  58
  59    if (sigaction (SIGRTMIN, &sa, NULL) != 0)
  60       perror("sigaction");
  61    if (kill(getpid(), SIGRTMIN) != 0)
  62       perror("kill sigrtmin");
  63    if (sigrtmin_received == 1)
  64       fprintf (stderr, "ok: SIGRTMIN received\n");
  65    else
  66       fprintf (stderr, "wrong sigrtmin: unexpected value %d sigrtmin_received\n",
  67                sigrtmin_received);
  68    return 0;
  69 }