nptl/tst-rwlock7.c

   1 /* Copyright (C) 2002, 2003, 2006 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   int err = pthread_rwlock_timedwrlock (r, &ts);
  55   if (err == 0)
  56     {
  57       puts ("rwlock_timedwrlock returned");
  58       pthread_exit ((void *) 1l);
  59     }
  60
  61   if (err != ETIMEDOUT)
  62     {
  63       printf ("err = %s (%d), expected %s (%d)\n",
  64               strerror (err), err, strerror (ETIMEDOUT), ETIMEDOUT);
  65       pthread_exit ((void *) 1l);
  66     }
  67   puts ("child: timedwrlock failed with ETIMEDOUT");
  68
  69   struct timeval tv2;
  70   (void) gettimeofday (&tv2, NULL);
  71
  72   timersub (&tv2, &tv, &tv);
  73
  74   if (tv.tv_usec < 200000)
  75     {
  76       puts ("timeout too short");
  77       pthread_exit ((void *) 1l);
  78     }
  79
  80   (void) gettimeofday (&tv, NULL);
  81   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  82   ts.tv_sec += 10;
  83   /* Note that the following operation makes ts invalid.  */
  84   ts.tv_nsec += 1000000000;
  85
  86   err = pthread_rwlock_timedwrlock (r, &ts);
  87   if (err == 0)
  88     {
  89       puts ("2nd timedwrlock succeeded");
  90       pthread_exit ((void *) 1l);
  91     }
  92   if (err != EINVAL)
  93     {
  94       puts ("2nd timedwrlock did not return EINVAL");
  95       pthread_exit ((void *) 1l);
  96     }
  97   puts ("child: timedwrlock failed with EINVAL");
  98
  99   return NULL;
 100 }
 101
 102
 103 static int
 104 do_test (void)
 105 {
 106   size_t cnt;
 107   for (cnt = 0; cnt < sizeof (kind) / sizeof (kind[0]); ++cnt)
 108     {
 109       pthread_rwlock_t r;
 110       pthread_rwlockattr_t a;
 111
 112       if (pthread_rwlockattr_init (&a) != 0)
 113         {
 114           printf ("round %Zu: rwlockattr_t failed\n", cnt);
 115           exit (1);
 116         }
 117
 118       if (pthread_rwlockattr_setkind_np (&a, kind[cnt]) != 0)
 119         {
 120           printf ("round %Zu: rwlockattr_setkind failed\n", cnt);
 121           exit (1);
 122         }
 123
 124       if (pthread_rwlock_init (&r, &a) != 0)
 125         {
 126           printf ("round %Zu: rwlock_init failed\n", cnt);
 127           exit (1);
 128         }
 129
 130       if (pthread_rwlockattr_destroy (&a) != 0)
 131         {
 132           printf ("round %Zu: rwlockattr_destroy failed\n", cnt);
 133           exit (1);
 134         }
 135
 136       struct timeval tv;
 137       (void) gettimeofday (&tv, NULL);
 138
 139       struct timespec ts;
 140       TIMEVAL_TO_TIMESPEC (&tv, &ts);
 141
 142       ++ts.tv_sec;
 143
 144       /* Get a read lock.  */
 145       if (pthread_rwlock_timedrdlock (&r, &ts) != 0)
 146         {
 147           printf ("round %Zu: rwlock_timedrdlock failed\n", cnt);
 148           exit (1);
 149         }
 150       printf ("%zu: got timedrdlock\n", cnt);
 151
 152       pthread_t th;
 153       if (pthread_create (&th, NULL, tf, &r) != 0)
 154         {
 155           printf ("round %Zu: create failed\n", cnt);
 156           exit (1);
 157         }
 158
 159       void *status;
 160       if (pthread_join (th, &status) != 0)
 161         {
 162           printf ("round %Zu: join failed\n", cnt);
 163           exit (1);
 164         }
 165       if (status != NULL)
 166         {
 167           printf ("failure in round %Zu\n", cnt);
 168           exit (1);
 169         }
 170
 171       if (pthread_rwlock_destroy (&r) != 0)
 172         {
 173           printf ("round %Zu: rwlock_destroy failed\n", cnt);
 174           exit (1);
 175         }
 176     }
 177
 178   return 0;
 179 }
 180
 181 #define TEST_FUNCTION do_test ()
 182 #include "../test-skeleton.c"