nptl/tst-rwlock14.c

   1 /* Copyright (C) 2004 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
   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 #include <stdlib.h>
  24 #include <time.h>
  25
  26
  27 static pthread_barrier_t b;
  28 static pthread_rwlock_t r = PTHREAD_RWLOCK_INITIALIZER;
  29
  30
  31 static void *
  32 tf (void *arg)
  33 {
  34   /* Lock the read-write lock.  */
  35   if (pthread_rwlock_wrlock (&r) != 0)
  36     {
  37       puts ("tf: cannot lock rwlock");
  38       exit (EXIT_FAILURE);
  39     }
  40
  41   pthread_t mt = *(pthread_t *) arg;
  42
  43   pthread_barrier_wait (&b);
  44
  45   /* This call will never return.  */
  46   pthread_join (mt, NULL);
  47
  48   return NULL;
  49 }
  50
  51
  52 static int
  53 do_test (void)
  54 {
  55   int result = 0;
  56   struct timespec ts;
  57
  58   if (clock_gettime (CLOCK_REALTIME, &ts) != 0)
  59     {
  60       puts ("clock_gettime failed");
  61       return 1;
  62     }
  63
  64   if (pthread_barrier_init (&b, NULL, 2) != 0)
  65     {
  66       puts ("barrier_init failed");
  67       return 1;
  68     }
  69
  70   pthread_t me = pthread_self ();
  71   pthread_t th;
  72   if (pthread_create (&th, NULL, tf, &me) != 0)
  73     {
  74       puts ("create failed");
  75       return 1;
  76     }
  77
  78   /* Wait until the rwlock is locked.  */
  79   pthread_barrier_wait (&b);
  80
  81   ts.tv_nsec = -1;
  82
  83   int e = pthread_rwlock_timedrdlock (&r, &ts);
  84   if (e == 0)
  85     {
  86       puts ("first rwlock_timedrdlock did not fail");
  87       result = 1;
  88     }
  89   else if (e != EINVAL)
  90     {
  91       puts ("first rwlock_timedrdlock did not return EINVAL");
  92       result = 1;
  93     }
  94
  95   e = pthread_rwlock_timedwrlock (&r, &ts);
  96   if (e == 0)
  97     {
  98       puts ("first rwlock_timedwrlock did not fail");
  99       result = 1;
 100     }
 101   else if (e != EINVAL)
 102     {
 103       puts ("first rwlock_timedwrlock did not return EINVAL");
 104       result = 1;
 105     }
 106
 107   ts.tv_nsec = 1000000000;
 108
 109   e = pthread_rwlock_timedrdlock (&r, &ts);
 110   if (e == 0)
 111     {
 112       puts ("second rwlock_timedrdlock did not fail");
 113       result = 1;
 114     }
 115   else if (e != EINVAL)
 116     {
 117       puts ("second rwlock_timedrdlock did not return EINVAL");
 118       result = 1;
 119     }
 120
 121   e = pthread_rwlock_timedrdlock (&r, &ts);
 122   if (e == 0)
 123     {
 124       puts ("second rwlock_timedrdlock did not fail");
 125       result = 1;
 126     }
 127   else if (e != EINVAL)
 128     {
 129       puts ("second rwlock_timedrdlock did not return EINVAL");
 130       result = 1;
 131     }
 132
 133   ts.tv_nsec = 0x100001000LL;
 134   if (ts.tv_nsec != 0x100001000LL)
 135     ts.tv_nsec = 2000000000;
 136
 137   e = pthread_rwlock_timedrdlock (&r, &ts);
 138   if (e == 0)
 139     {
 140       puts ("third rwlock_timedrdlock did not fail");
 141       result = 1;
 142     }
 143   else if (e != EINVAL)
 144     {
 145       puts ("third rwlock_timedrdlock did not return EINVAL");
 146       result = 1;
 147     }
 148
 149   e = pthread_rwlock_timedrdlock (&r, &ts);
 150   if (e == 0)
 151     {
 152       puts ("third rwlock_timedrdlock did not fail");
 153       result = 1;
 154     }
 155   else if (e != EINVAL)
 156     {
 157       puts ("third rwlock_timedrdlock did not return EINVAL");
 158       result = 1;
 159     }
 160
 161   if (result == 0)
 162     puts ("no bugs");
 163
 164   return result;
 165 }
 166
 167
 168 #define TEST_FUNCTION do_test ()
 169 #include "../test-skeleton.c"