nptl/tst-rwlock3.c

   1 /* Copyright (C) 2002-2018 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 /* This test case checks more than standard compliance.  An
  20    implementation may provide this service but it is not required to
  21    do so.  */
  22
  23 #include <errno.h>
  24 #include <pthread.h>
  25 #include <stdio.h>
  26
  27
  28 static int
  29 do_test (void)
  30 {
  31   pthread_rwlock_t r;
  32   int e;
  33
  34   if (pthread_rwlock_init (&r, NULL) != 0)
  35     {
  36       puts ("rwlock_init failed");
  37       return 1;
  38     }
  39   puts ("rwlock_init succeeded");
  40
  41   if (pthread_rwlock_trywrlock (&r) != 0)
  42     {
  43       puts ("rwlock_trywrlock on unlocked rwlock failed");
  44       return 1;
  45     }
  46   puts ("rwlock_trywrlock on unlocked rwlock succeeded");
  47
  48   e = pthread_rwlock_rdlock (&r);
  49   if (e == 0)
  50     {
  51       puts ("rwlock_rdlock on rwlock with writer succeeded");
  52       return 1;
  53     }
  54   if (e != EDEADLK)
  55     {
  56       puts ("rwlock_rdlock on rwlock with writer failed != EDEADLK");
  57       return 1;
  58     }
  59   puts ("rwlock_rdlock on rwlock with writer failed with EDEADLK");
  60
  61   e = pthread_rwlock_wrlock (&r);
  62   if (e == 0)
  63     {
  64       puts ("rwlock_wrlock on rwlock with writer succeeded");
  65       return 1;
  66     }
  67   if (e != EDEADLK)
  68     {
  69       puts ("rwlock_wrlock on rwlock with writer failed != EDEADLK");
  70       return 1;
  71     }
  72   puts ("rwlock_wrlock on rwlock with writer failed with EDEADLK");
  73
  74   if (pthread_rwlock_unlock (&r) != 0)
  75     {
  76       puts ("rwlock_unlock failed");
  77       return 1;
  78     }
  79   puts ("rwlock_unlock succeeded");
  80
  81   if (pthread_rwlock_destroy (&r) != 0)
  82     {
  83       puts ("rwlock_destroy failed");
  84       return 1;
  85     }
  86   puts ("rwlock_destroy succeeded");
  87
  88   return 0;
  89 }
  90
  91 #define TEST_FUNCTION do_test ()
  92 #include "../test-skeleton.c"