nptl/tst-rwlock2.c

   1 /* Copyright (C) 2002-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   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
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <pthread.h>
  20 #include <stdio.h>
  21
  22
  23 static int
  24 do_test (void)
  25 {
  26   pthread_rwlock_t r;
  27   pthread_rwlockattr_t at;
  28   int e;
  29
  30   if (pthread_rwlockattr_init (&at) != 0)
  31     {
  32       puts ("rwlockattr_init failed");
  33       return 1;
  34     }
  35   puts ("rwlockattr_init succeeded");
  36
  37 #ifndef TYPE
  38 # define TYPE PTHREAD_RWLOCK_PREFER_READER_NP
  39 #endif
  40
  41   if (pthread_rwlockattr_setkind_np (&at, TYPE) != 0)
  42     {
  43       puts ("rwlockattr_setkind failed");
  44       return 1;
  45     }
  46   puts ("rwlockattr_setkind succeeded");
  47
  48   if (pthread_rwlock_init (&r, &at) != 0)
  49     {
  50       puts ("rwlock_init failed");
  51       return 1;
  52     }
  53   puts ("rwlock_init succeeded");
  54
  55   if (pthread_rwlockattr_destroy (&at) != 0)
  56     {
  57       puts ("rwlockattr_destroy failed");
  58       return 1;
  59     }
  60   puts ("rwlockattr_destroy succeeded");
  61
  62   if (pthread_rwlock_wrlock (&r) != 0)
  63     {
  64       puts ("1st rwlock_wrlock failed");
  65       return 1;
  66     }
  67   puts ("1st rwlock_wrlock succeeded");
  68
  69   e = pthread_rwlock_tryrdlock (&r);
  70   if (e == 0)
  71     {
  72       puts ("rwlock_tryrdlock on rwlock with writer succeeded");
  73       return 1;
  74     }
  75   if (e != EBUSY)
  76     {
  77       puts ("rwlock_tryrdlock on rwlock with writer return value != EBUSY");
  78       return 1;
  79     }
  80   puts ("rwlock_tryrdlock on rwlock with writer failed with EBUSY");
  81
  82   e = pthread_rwlock_trywrlock (&r);
  83   if (e == 0)
  84     {
  85       puts ("rwlock_trywrlock on rwlock with writer succeeded");
  86       return 1;
  87     }
  88   if (e != EBUSY)
  89     {
  90       puts ("rwlock_trywrlock on rwlock with writer return value != EBUSY");
  91       return 1;
  92     }
  93   puts ("rwlock_trywrlock on rwlock with writer failed with EBUSY");
  94
  95   if (pthread_rwlock_unlock (&r) != 0)
  96     {
  97       puts ("1st rwlock_unlock failed");
  98       return 1;
  99     }
 100   puts ("1st rwlock_unlock succeeded");
 101
 102   if (pthread_rwlock_tryrdlock (&r) != 0)
 103     {
 104       puts ("rwlock_tryrdlock on unlocked rwlock failed");
 105       return 1;
 106     }
 107   puts ("rwlock_tryrdlock on unlocked rwlock succeeded");
 108
 109   e = pthread_rwlock_trywrlock (&r);
 110   if (e == 0)
 111     {
 112       puts ("rwlock_trywrlock on rwlock with reader succeeded");
 113       return 1;
 114     }
 115   if (e != EBUSY)
 116     {
 117       puts ("rwlock_trywrlock on rwlock with reader return value != EBUSY");
 118       return 1;
 119     }
 120   puts ("rwlock_trywrlock on rwlock with reader failed with EBUSY");
 121
 122   if (pthread_rwlock_unlock (&r) != 0)
 123     {
 124       puts ("2nd rwlock_unlock failed");
 125       return 1;
 126     }
 127   puts ("2nd rwlock_unlock succeeded");
 128
 129   if (pthread_rwlock_trywrlock (&r) != 0)
 130     {
 131       puts ("rwlock_trywrlock on unlocked rwlock failed");
 132       return 1;
 133     }
 134   puts ("rwlock_trywrlock on unlocked rwlock succeeded");
 135
 136   e = pthread_rwlock_tryrdlock (&r);
 137   if (e == 0)
 138     {
 139       puts ("rwlock_tryrdlock on rwlock with writer succeeded");
 140       return 1;
 141     }
 142   if (e != EBUSY)
 143     {
 144       puts ("rwlock_tryrdlock on rwlock with writer return value != EBUSY");
 145       return 1;
 146     }
 147   puts ("rwlock_tryrdlock on rwlock with writer failed with EBUSY");
 148
 149   if (pthread_rwlock_unlock (&r) != 0)
 150     {
 151       puts ("3rd rwlock_unlock failed");
 152       return 1;
 153     }
 154   puts ("3rd rwlock_unlock succeeded");
 155
 156   if (pthread_rwlock_destroy (&r) != 0)
 157     {
 158       puts ("rwlock_destroy failed");
 159       return 1;
 160     }
 161   puts ("rwlock_destroy succeeded");
 162
 163   return 0;
 164 }
 165
 166 #define TEST_FUNCTION do_test ()
 167 #include "../test-skeleton.c"