tst-raise1.c 1.6 KB

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  1. /* Copyright (C) 2003 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, write to the Free
  14. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  15. 02111-1307 USA. */
  16. #include <errno.h>
  17. #include <error.h>
  18. #include <signal.h>
  19. #include <stdlib.h>
  20. #include <stdio.h>
  21. volatile int count;
  22. void
  23. sh (int sig)
  24. {
  25. ++count;
  26. }
  27. int
  28. main (void)
  29. {
  30. struct sigaction sa;
  31. sa.sa_handler = sh;
  32. sigemptyset (&sa.sa_mask);
  33. sa.sa_flags = 0;
  34. if (sigaction (SIGUSR1, &sa, NULL) < 0)
  35. {
  36. printf ("sigaction failed: %m\n");
  37. exit (1);
  38. }
  39. if (raise (SIGUSR1) < 0)
  40. {
  41. printf ("first raise failed: %m\n");
  42. exit (1);
  43. }
  44. if (raise (SIGUSR1) < 0)
  45. {
  46. printf ("second raise failed: %m\n");
  47. exit (1);
  48. }
  49. if (count != 2)
  50. {
  51. printf ("signal handler not called 2 times\n");
  52. exit (1);
  53. }
  54. exit (0);
  55. }