nptl/tst-rwlock2.c

   1 /* Copyright (C) 2002 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <errno.h>
  21 #include <pthread.h>
  22 #include <stdio.h>
  23
  24
  25 static int
  26 do_test (void)
  27 {
  28   pthread_rwlock_t r;
  29   int e;
  30
  31   if (pthread_rwlock_init (&r, NULL) != 0)
  32     {
  33       puts ("rwlock_init failed");
  34       return 1;
  35     }
  36   puts ("rwlock_init succeeded");
  37
  38   if (pthread_rwlock_wrlock (&r) != 0)
  39     {
  40       puts ("1st rwlock_wrlock failed");
  41       return 1;
  42     }
  43   puts ("1st rwlock_wrlock succeeded");
  44
  45   e = pthread_rwlock_tryrdlock (&r);
  46   if (e == 0)
  47     {
  48       puts ("rwlock_tryrdlock on rwlock with writer succeeded");
  49       return 1;
  50     }
  51   if (e != EBUSY)
  52     {
  53       puts ("rwlock_tryrdlock on rwlock with writer return value != EBUSY");
  54       return 1;
  55     }
  56   puts ("rwlock_tryrdlock on rwlock with writer failed with EBUSY");
  57
  58   e = pthread_rwlock_trywrlock (&r);
  59   if (e == 0)
  60     {
  61       puts ("rwlock_trywrlock on rwlock with writer succeeded");
  62       return 1;
  63     }
  64   if (e != EBUSY)
  65     {
  66       puts ("rwlock_trywrlock on rwlock with writer return value != EBUSY");
  67       return 1;
  68     }
  69   puts ("rwlock_trywrlock on rwlock with writer failed with EBUSY");
  70
  71   if (pthread_rwlock_unlock (&r) != 0)
  72     {
  73       puts ("1st rwlock_unlock failed");
  74       return 1;
  75     }
  76   puts ("1st rwlock_unlock succeeded");
  77
  78   if (pthread_rwlock_tryrdlock (&r) != 0)
  79     {
  80       puts ("rwlock_tryrdlock on unlocked rwlock failed");
  81       return 1;
  82     }
  83   puts ("rwlock_tryrdlock on unlocked rwlock succeeded");
  84
  85   e = pthread_rwlock_trywrlock (&r);
  86   if (e == 0)
  87     {
  88       puts ("rwlock_trywrlock on rwlock with reader succeeded");
  89       return 1;
  90     }
  91   if (e != EBUSY)
  92     {
  93       puts ("rwlock_trywrlock on rwlock with reader return value != EBUSY");
  94       return 1;
  95     }
  96   puts ("rwlock_trywrlock on rwlock with reader failed with EBUSY");
  97
  98   if (pthread_rwlock_unlock (&r) != 0)
  99     {
 100       puts ("2nd rwlock_unlock failed");
 101       return 1;
 102     }
 103   puts ("2nd rwlock_unlock succeeded");
 104
 105   if (pthread_rwlock_trywrlock (&r) != 0)
 106     {
 107       puts ("rwlock_trywrlock on unlocked rwlock failed");
 108       return 1;
 109     }
 110   puts ("rwlock_trywrlock on unlocked rwlock succeeded");
 111
 112   e = pthread_rwlock_tryrdlock (&r);
 113   if (e == 0)
 114     {
 115       puts ("rwlock_tryrdlock on rwlock with writer succeeded");
 116       return 1;
 117     }
 118   if (e != EBUSY)
 119     {
 120       puts ("rwlock_tryrdlock on rwlock with writer return value != EBUSY");
 121       return 1;
 122     }
 123   puts ("rwlock_tryrdlock on rwlock with writer failed with EBUSY");
 124
 125   if (pthread_rwlock_unlock (&r) != 0)
 126     {
 127       puts ("3rd rwlock_unlock failed");
 128       return 1;
 129     }
 130   puts ("3rd rwlock_unlock succeeded");
 131
 132   if (pthread_rwlock_destroy (&r) != 0)
 133     {
 134       puts ("rwlock_destroy failed");
 135       return 1;
 136     }
 137   puts ("rwlock_destroy succeeded");
 138
 139   return 0;
 140 }
 141
 142 #define TEST_FUNCTION do_test ()
 143 #include "../test-skeleton.c"