regress/lib/libpthread/sigsuspend/sigsuspend.c

   1 /*      $NetBSD: sigsuspend.c,v 1.1 2003/03/01 01:46:03 lha Exp $       */
   2
   3 /*
   4  * Regression test for sigsuspend in libpthread when pthread lib isn't
   5  * initialized.
   6  *
   7  * Written by Love Hörnquist Åstrand <lha@NetBSD.org>, March 2003.
   8  * Public domain.
   9  */
  10
  11 #include <assert.h>
  12 #include <err.h>
  13 #include <stdio.h>
  14 #include <signal.h>
  15 #include <unistd.h>
  16
  17 static void alarm_handler(int);
  18
  19 int alarm_set;
  20
  21 static void
  22 alarm_handler(int signo)
  23 {
  24         alarm_set = 1;
  25 }
  26
  27 int
  28 main(int argc, char **argv)
  29 {
  30         struct sigaction sa;
  31         sigset_t set;
  32
  33         sa.sa_flags = 0;
  34         sa.sa_handler = alarm_handler;
  35         sigemptyset(&sa.sa_mask);
  36
  37         sigaction(SIGALRM, &sa, NULL);
  38
  39         alarm(1);
  40
  41         sigemptyset(&set);
  42         sigaddset(&set, SIGUSR1);
  43
  44         sigsuspend(&set);
  45
  46         alarm(0);
  47
  48         if (!alarm_set)
  49                 errx(1, "alarm_set not set");
  50
  51         return 0;
  52 }