nptl/tst-rwlock6.c

   1 /* Copyright (C) 2002-2019 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <pthread.h>
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <sys/time.h>
  25 #include <support/check.h>
  26 #include <support/timespec.h>
  27 #include <support/xthread.h>
  28 #include <support/xtime.h>
  29
  30
  31 static int kind[] =
  32   {
  33     PTHREAD_RWLOCK_PREFER_READER_NP,
  34     PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
  35     PTHREAD_RWLOCK_PREFER_WRITER_NP,
  36   };
  37
  38
  39 static void *
  40 tf (void *arg)
  41 {
  42   pthread_rwlock_t *r = arg;
  43
  44   /* Timeout: 0.3 secs.  */
  45   struct timespec ts_start;
  46   xclock_gettime (CLOCK_REALTIME, &ts_start);
  47
  48   struct timespec ts_timeout = timespec_add (ts_start,
  49                                              make_timespec (0, 300000000));
  50
  51   puts ("child calling timedrdlock");
  52
  53   TEST_COMPARE (pthread_rwlock_timedrdlock (r, &ts_timeout), ETIMEDOUT);
  54
  55   puts ("1st child timedrdlock done");
  56
  57   TEST_TIMESPEC_NOW_OR_AFTER (CLOCK_REALTIME, ts_timeout);
  58
  59   xclock_gettime (CLOCK_REALTIME, &ts_timeout);
  60   ts_timeout.tv_sec += 10;
  61   /* Note that the following operation makes ts invalid.  */
  62   ts_timeout.tv_nsec += 1000000000;
  63
  64   TEST_COMPARE (pthread_rwlock_timedrdlock (r, &ts_timeout), EINVAL);
  65
  66   puts ("2nd child timedrdlock done");
  67
  68   return NULL;
  69 }
  70
  71
  72 static int
  73 do_test (void)
  74 {
  75   size_t cnt;
  76   for (cnt = 0; cnt < sizeof (kind) / sizeof (kind[0]); ++cnt)
  77     {
  78       pthread_rwlock_t r;
  79       pthread_rwlockattr_t a;
  80
  81       if (pthread_rwlockattr_init (&a) != 0)
  82         FAIL_EXIT1 ("round %Zu: rwlockattr_t failed\n", cnt);
  83
  84       if (pthread_rwlockattr_setkind_np (&a, kind[cnt]) != 0)
  85         FAIL_EXIT1 ("round %Zu: rwlockattr_setkind failed\n", cnt);
  86
  87       if (pthread_rwlock_init (&r, &a) != 0)
  88         FAIL_EXIT1 ("round %Zu: rwlock_init failed\n", cnt);
  89
  90       if (pthread_rwlockattr_destroy (&a) != 0)
  91         FAIL_EXIT1 ("round %Zu: rwlockattr_destroy failed\n", cnt);
  92
  93       struct timespec ts;
  94       xclock_gettime (CLOCK_REALTIME, &ts);
  95       ++ts.tv_sec;
  96
  97       /* Get a write lock.  */
  98       int e = pthread_rwlock_timedwrlock (&r, &ts);
  99       if (e != 0)
 100         FAIL_EXIT1 ("round %Zu: rwlock_timedwrlock failed (%d)\n", cnt, e);
 101
 102       puts ("1st timedwrlock done");
 103
 104       xclock_gettime (CLOCK_REALTIME, &ts);
 105       ++ts.tv_sec;
 106       TEST_COMPARE (pthread_rwlock_timedrdlock (&r, &ts), EDEADLK);
 107
 108       puts ("1st timedrdlock done");
 109
 110       xclock_gettime (CLOCK_REALTIME, &ts);
 111       ++ts.tv_sec;
 112       TEST_COMPARE (pthread_rwlock_timedwrlock (&r, &ts), EDEADLK);
 113
 114       puts ("2nd timedwrlock done");
 115
 116       pthread_t th;
 117       if (pthread_create (&th, NULL, tf, &r) != 0)
 118         FAIL_EXIT1 ("round %Zu: create failed\n", cnt);
 119
 120       puts ("started thread");
 121
 122       void *status;
 123       if (pthread_join (th, &status) != 0)
 124         FAIL_EXIT1 ("round %Zu: join failed\n", cnt);
 125       if (status != NULL)
 126         FAIL_EXIT1 ("failure in round %Zu\n", cnt);
 127
 128       puts ("joined thread");
 129
 130       if (pthread_rwlock_destroy (&r) != 0)
 131         FAIL_EXIT1 ("round %Zu: rwlock_destroy failed\n", cnt);
 132     }
 133
 134   return 0;
 135 }
 136
 137 #include <support/test-driver.c>