nptl/tst-rwlock2.c

   1 /* Copyright (C) 2002-2021 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22
  23
  24 static int
  25 do_test (void)
  26 {
  27   pthread_rwlock_t r;
  28   pthread_rwlockattr_t at;
  29   int e;
  30
  31   if (pthread_rwlockattr_init (&at) != 0)
  32     {
  33       puts ("rwlockattr_init failed");
  34       return 1;
  35     }
  36   puts ("rwlockattr_init succeeded");
  37
  38 #ifndef TYPE
  39 # define TYPE PTHREAD_RWLOCK_PREFER_READER_NP
  40 #endif
  41
  42   if (pthread_rwlockattr_setkind_np (&at, TYPE) != 0)
  43     {
  44       puts ("rwlockattr_setkind failed");
  45       return 1;
  46     }
  47   puts ("rwlockattr_setkind succeeded");
  48
  49   if (pthread_rwlock_init (&r, &at) != 0)
  50     {
  51       puts ("rwlock_init failed");
  52       return 1;
  53     }
  54   puts ("rwlock_init succeeded");
  55
  56   if (pthread_rwlockattr_destroy (&at) != 0)
  57     {
  58       puts ("rwlockattr_destroy failed");
  59       return 1;
  60     }
  61   puts ("rwlockattr_destroy succeeded");
  62
  63   if (pthread_rwlock_wrlock (&r) != 0)
  64     {
  65       puts ("1st rwlock_wrlock failed");
  66       return 1;
  67     }
  68   puts ("1st rwlock_wrlock succeeded");
  69
  70   e = pthread_rwlock_tryrdlock (&r);
  71   if (e == 0)
  72     {
  73       puts ("rwlock_tryrdlock on rwlock with writer succeeded");
  74       return 1;
  75     }
  76   if (e != EBUSY)
  77     {
  78       puts ("rwlock_tryrdlock on rwlock with writer return value != EBUSY");
  79       return 1;
  80     }
  81   puts ("rwlock_tryrdlock on rwlock with writer failed with EBUSY");
  82
  83   e = pthread_rwlock_trywrlock (&r);
  84   if (e == 0)
  85     {
  86       puts ("rwlock_trywrlock on rwlock with writer succeeded");
  87       return 1;
  88     }
  89   if (e != EBUSY)
  90     {
  91       puts ("rwlock_trywrlock on rwlock with writer return value != EBUSY");
  92       return 1;
  93     }
  94   puts ("rwlock_trywrlock on rwlock with writer failed with EBUSY");
  95
  96   if (pthread_rwlock_unlock (&r) != 0)
  97     {
  98       puts ("1st rwlock_unlock failed");
  99       return 1;
 100     }
 101   puts ("1st rwlock_unlock succeeded");
 102
 103   if (pthread_rwlock_tryrdlock (&r) != 0)
 104     {
 105       puts ("rwlock_tryrdlock on unlocked rwlock failed");
 106       return 1;
 107     }
 108   puts ("rwlock_tryrdlock on unlocked rwlock succeeded");
 109
 110   e = pthread_rwlock_trywrlock (&r);
 111   if (e == 0)
 112     {
 113       puts ("rwlock_trywrlock on rwlock with reader succeeded");
 114       return 1;
 115     }
 116   if (e != EBUSY)
 117     {
 118       puts ("rwlock_trywrlock on rwlock with reader return value != EBUSY");
 119       return 1;
 120     }
 121   puts ("rwlock_trywrlock on rwlock with reader failed with EBUSY");
 122
 123   if (pthread_rwlock_unlock (&r) != 0)
 124     {
 125       puts ("2nd rwlock_unlock failed");
 126       return 1;
 127     }
 128   puts ("2nd rwlock_unlock succeeded");
 129
 130   if (pthread_rwlock_trywrlock (&r) != 0)
 131     {
 132       puts ("rwlock_trywrlock on unlocked rwlock failed");
 133       return 1;
 134     }
 135   puts ("rwlock_trywrlock on unlocked rwlock succeeded");
 136
 137   e = pthread_rwlock_tryrdlock (&r);
 138   if (e == 0)
 139     {
 140       puts ("rwlock_tryrdlock on rwlock with writer succeeded");
 141       return 1;
 142     }
 143   if (e != EBUSY)
 144     {
 145       puts ("rwlock_tryrdlock on rwlock with writer return value != EBUSY");
 146       return 1;
 147     }
 148   puts ("rwlock_tryrdlock on rwlock with writer failed with EBUSY");
 149
 150   if (pthread_rwlock_unlock (&r) != 0)
 151     {
 152       puts ("3rd rwlock_unlock failed");
 153       return 1;
 154     }
 155   puts ("3rd rwlock_unlock succeeded");
 156
 157   if (pthread_rwlock_destroy (&r) != 0)
 158     {
 159       puts ("rwlock_destroy failed");
 160       return 1;
 161     }
 162   puts ("rwlock_destroy succeeded");
 163
 164   return 0;
 165 }
 166
 167 #define TEST_FUNCTION do_test ()
 168 #include "../test-skeleton.c"