nptl/tst-rwlock6.c

   1 /* Copyright (C) 2002, 2003 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 <stdlib.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <sys/time.h>
  26
  27
  28 static int kind[] =
  29   {
  30     PTHREAD_RWLOCK_PREFER_READER_NP,
  31     PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
  32     PTHREAD_RWLOCK_PREFER_WRITER_NP,
  33   };
  34
  35
  36 static void *
  37 tf (void *arg)
  38 {
  39   pthread_rwlock_t *r = arg;
  40
  41   /* Timeout: 0.3 secs.  */
  42   struct timeval tv;
  43   (void) gettimeofday (&tv, NULL);
  44
  45   struct timespec ts;
  46   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  47   ts.tv_nsec += 300000000;
  48   if (ts.tv_nsec >= 1000000000)
  49     {
  50       ts.tv_nsec -= 1000000000;
  51       ++ts.tv_sec;
  52     }
  53
  54   puts ("child calling timedrdlock");
  55
  56   int err = pthread_rwlock_timedrdlock (r, &ts);
  57   if (err == 0)
  58     {
  59       puts ("rwlock_timedrdlock returned");
  60       pthread_exit ((void *) 1l);
  61     }
  62
  63   if (err != ETIMEDOUT)
  64     {
  65       printf ("err = %s (%d), expected %s (%d)\n",
  66               strerror (err), err, strerror (ETIMEDOUT), ETIMEDOUT);
  67       pthread_exit ((void *) 1l);
  68     }
  69
  70   puts ("1st child timedrdlock done");
  71
  72   struct timeval tv2;
  73   (void) gettimeofday (&tv2, NULL);
  74
  75   timersub (&tv2, &tv, &tv);
  76
  77   if (tv.tv_usec < 200000)
  78     {
  79       puts ("timeout too short");
  80       pthread_exit ((void *) 1l);
  81     }
  82
  83   (void) gettimeofday (&tv, NULL);
  84   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  85   ts.tv_sec += 10;
  86   /* Note that the following operation makes ts invalid.  */
  87   ts.tv_nsec += 1000000000;
  88
  89   err = pthread_rwlock_timedrdlock (r, &ts);
  90   if (err == 0)
  91     {
  92       puts ("2nd timedrdlock succeeded");
  93       pthread_exit ((void *) 1l);
  94     }
  95   if (err != EINVAL)
  96     {
  97       puts ("2nd timedrdlock did not return EINVAL");
  98       pthread_exit ((void *) 1l);
  99     }
 100
 101   puts ("2nd child timedrdlock done");
 102
 103   return NULL;
 104 }
 105
 106
 107 static int
 108 do_test (void)
 109 {
 110   size_t cnt;
 111   for (cnt = 0; cnt < sizeof (kind) / sizeof (kind[0]); ++cnt)
 112     {
 113       pthread_rwlock_t r;
 114       pthread_rwlockattr_t a;
 115
 116       if (pthread_rwlockattr_init (&a) != 0)
 117         {
 118           printf ("round %Zu: rwlockattr_t failed\n", cnt);
 119           exit (1);
 120         }
 121
 122       if (pthread_rwlockattr_setkind_np (&a, kind[cnt]) != 0)
 123         {
 124           printf ("round %Zu: rwlockattr_setkind failed\n", cnt);
 125           exit (1);
 126         }
 127
 128       if (pthread_rwlock_init (&r, &a) != 0)
 129         {
 130           printf ("round %Zu: rwlock_init failed\n", cnt);
 131           exit (1);
 132         }
 133
 134       if (pthread_rwlockattr_destroy (&a) != 0)
 135         {
 136           printf ("round %Zu: rwlockattr_destroy failed\n", cnt);
 137           exit (1);
 138         }
 139
 140       struct timeval tv;
 141       (void) gettimeofday (&tv, NULL);
 142
 143       struct timespec ts;
 144       TIMEVAL_TO_TIMESPEC (&tv, &ts);
 145
 146       ++ts.tv_sec;
 147
 148       /* Get a write lock.  */
 149       int e = pthread_rwlock_timedwrlock (&r, &ts);
 150       if (e != 0)
 151         {
 152           printf ("round %Zu: rwlock_timedwrlock failed (%d)\n", cnt, e);
 153           exit (1);
 154         }
 155
 156       puts ("1st timedwrlock done");
 157
 158       (void) gettimeofday (&tv, NULL);
 159       TIMEVAL_TO_TIMESPEC (&tv, &ts);
 160       ++ts.tv_sec;
 161       e = pthread_rwlock_timedrdlock (&r, &ts);
 162       if (e == 0)
 163         {
 164           puts ("timedrdlock succeeded");
 165           exit (1);
 166         }
 167       if (e != EDEADLK)
 168         {
 169           puts ("timedrdlock did not return EDEADLK");
 170           exit (1);
 171         }
 172
 173       puts ("1st timedrdlock done");
 174
 175       (void) gettimeofday (&tv, NULL);
 176       TIMEVAL_TO_TIMESPEC (&tv, &ts);
 177       ++ts.tv_sec;
 178       e = pthread_rwlock_timedwrlock (&r, &ts);
 179       if (e == 0)
 180         {
 181           puts ("2nd timedwrlock succeeded");
 182           exit (1);
 183         }
 184       if (e != EDEADLK)
 185         {
 186           puts ("2nd timedwrlock did not return EDEADLK");
 187           exit (1);
 188         }
 189
 190       puts ("2nd timedwrlock done");
 191
 192       pthread_t th;
 193       if (pthread_create (&th, NULL, tf, &r) != 0)
 194         {
 195           printf ("round %Zu: create failed\n", cnt);
 196           exit (1);
 197         }
 198
 199       puts ("started thread");
 200
 201       void *status;
 202       if (pthread_join (th, &status) != 0)
 203         {
 204           printf ("round %Zu: join failed\n", cnt);
 205           exit (1);
 206         }
 207       if (status != NULL)
 208         {
 209           printf ("failure in round %Zu\n", cnt);
 210           exit (1);
 211         }
 212
 213       puts ("joined thread");
 214
 215       if (pthread_rwlock_destroy (&r) != 0)
 216         {
 217           printf ("round %Zu: rwlock_destroy failed\n", cnt);
 218           exit (1);
 219         }
 220     }
 221
 222   return 0;
 223 }
 224
 225 #define TEST_FUNCTION do_test ()
 226 #include "../test-skeleton.c"