about summary refs log tree commit diff
path: root/nptl/tst-rwlock7.c
blob: 6dd8fef5a732452924c7339eea78cca90c0a5759 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <errno.h>
#include <pthread.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/time.h>


static int kind[] =
  {
    PTHREAD_RWLOCK_PREFER_READER_NP,
    PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
    PTHREAD_RWLOCK_PREFER_WRITER_NP,
  };


static void *
tf (void *arg)
{
  pthread_rwlock_t *r = arg;

  /* Timeout: 0.3 secs.  */
  struct timeval tv;
  (void) gettimeofday (&tv, NULL);

  struct timespec ts;
  TIMEVAL_TO_TIMESPEC (&tv, &ts);
  ts.tv_nsec += 300000000;
  if (ts.tv_nsec >= 1000000000)
    {
      ts.tv_nsec -= 1000000000;
      ++ts.tv_sec;
    }

  int err = pthread_rwlock_timedwrlock (r, &ts);
  if (err == 0)
    {
      puts ("rwlock_timedwrlock returned");
      pthread_exit ((void *) 1l);
    }

  if (err != ETIMEDOUT)
    {
      printf ("err = %s (%d), expected %s (%d)\n",
	      strerror (err), err, strerror (ETIMEDOUT), ETIMEDOUT);
      pthread_exit ((void *) 1l);
    }

  struct timeval tv2;
  (void) gettimeofday (&tv2, NULL);

  timersub (&tv2, &tv, &tv);

  if (tv.tv_usec < 200000)
    {
      puts ("timeout too short");
      pthread_exit ((void *) 1l);
    }

  (void) gettimeofday (&tv, NULL);
  TIMEVAL_TO_TIMESPEC (&tv, &ts);
  ts.tv_sec += 10;
  /* Note that the following operation makes ts invalid.  */
  ts.tv_nsec += 1000000000;

  err = pthread_rwlock_timedwrlock (r, &ts);
  if (err == 0)
    {
      puts ("2nd timedwrlock succeeded");
      pthread_exit ((void *) 1l);
    }
  if (err != EINVAL)
    {
      puts ("2nd timedwrlock did not return EINVAL");
      pthread_exit ((void *) 1l);
    }

  return NULL;
}


static int
do_test (void)
{
  size_t cnt;
  for (cnt = 0; cnt < sizeof (kind) / sizeof (kind[0]); ++cnt)
    {
      pthread_rwlock_t r;
      pthread_rwlockattr_t a;

      if (pthread_rwlockattr_init (&a) != 0)
	{
	  printf ("round %Zu: rwlockattr_t failed\n", cnt);
	  exit (1);
	}

      if (pthread_rwlockattr_setkind_np (&a, kind[cnt]) != 0)
	{
	  printf ("round %Zu: rwlockattr_setkind failed\n", cnt);
	  exit (1);
	}

      if (pthread_rwlock_init (&r, &a) != 0)
	{
	  printf ("round %Zu: rwlock_init failed\n", cnt);
	  exit (1);
	}

      if (pthread_rwlockattr_destroy (&a) != 0)
	{
	  printf ("round %Zu: rwlockattr_destroy failed\n", cnt);
	  exit (1);
	}

      struct timeval tv;
      (void) gettimeofday (&tv, NULL);

      struct timespec ts;
      TIMEVAL_TO_TIMESPEC (&tv, &ts);

      ++ts.tv_sec;

      /* Get a read lock.  */
      if (pthread_rwlock_timedrdlock (&r, &ts) != 0)
	{
	  printf ("round %Zu: rwlock_timedrdlock failed\n", cnt);
	  exit (1);
	}

      pthread_t th;
      if (pthread_create (&th, NULL, tf, &r) != 0)
	{
	  printf ("round %Zu: create failed\n", cnt);
	  exit (1);
	}

      void *status;
      if (pthread_join (th, &status) != 0)
	{
	  printf ("round %Zu: join failed\n", cnt);
	  exit (1);
	}
      if (status != NULL)
	{
	  printf ("failure in round %d\n", cnt);
	  exit (1);
	}

      if (pthread_rwlock_destroy (&r) != 0)
	{
	  printf ("round %Zu: rwlock_destroy failed\n", cnt);
	  exit (1);
	}
    }

  return 0;
}

#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"