tst-sem5.c 1.9 KB

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  1. /* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
  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 <semaphore.h>
  18. #include <stdio.h>
  19. #include <time.h>
  20. #include <unistd.h>
  21. #include <sys/time.h>
  22. static int
  23. do_test (void)
  24. {
  25. sem_t s;
  26. struct timespec ts;
  27. struct timeval tv;
  28. if (sem_init (&s, 0, 1) == -1)
  29. {
  30. puts ("sem_init failed");
  31. return 1;
  32. }
  33. if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1)
  34. {
  35. puts ("sem_wait failed");
  36. return 1;
  37. }
  38. if (gettimeofday (&tv, NULL) != 0)
  39. {
  40. puts ("gettimeofday failed");
  41. return 1;
  42. }
  43. TIMEVAL_TO_TIMESPEC (&tv, &ts);
  44. /* We wait for half a second. */
  45. ts.tv_nsec += 500000000;
  46. if (ts.tv_nsec >= 1000000000)
  47. {
  48. ++ts.tv_sec;
  49. ts.tv_nsec -= 1000000000;
  50. }
  51. errno = 0;
  52. if (TEMP_FAILURE_RETRY (sem_timedwait (&s, &ts)) != -1)
  53. {
  54. puts ("sem_timedwait succeeded");
  55. return 1;
  56. }
  57. if (errno != ETIMEDOUT)
  58. {
  59. printf ("sem_timedwait return errno = %d instead of ETIMEDOUT\n",
  60. errno);
  61. return 1;
  62. }
  63. return 0;
  64. }
  65. #define TEST_FUNCTION do_test ()
  66. #include "../test-skeleton.c"