about summary refs log tree commit diff
path: root/nptl/test-rwlock-printers.c
blob: 046c3255f1ace6050b764e31b2cbea9518487a15 (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
/* Helper program for testing the pthread_rwlock_t pretty printer.

   Copyright (C) 2016-2023 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   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, see
   <https://www.gnu.org/licenses/>.  */

/* Keep the calls to the pthread_* functions on separate lines to make it easy
   to advance through the program using the gdb 'next' command.  */

#include <pthread.h>

#define PASS 0
#define FAIL 1

static int test_locking_reader (pthread_rwlock_t *rwlock);
static int test_locking_writer (pthread_rwlock_t *rwlock);

int
main (void)
{
  pthread_rwlock_t rwlock;

  int result = FAIL;

  if (test_locking_reader (&rwlock) == PASS
      && test_locking_writer (&rwlock) == PASS)
    result = PASS;
  /* Else, one of the pthread_rwlock* functions failed.  */

  return result;
}

/* Tests locking the rwlock multiple times as a reader.  */
static int
test_locking_reader (pthread_rwlock_t *rwlock)
{
  int result = FAIL;

  if (pthread_rwlock_init (rwlock, NULL) == 0
      && pthread_rwlock_rdlock (rwlock) == 0 /* Test locking (reader).  */
      && pthread_rwlock_rdlock (rwlock) == 0
      && pthread_rwlock_rdlock (rwlock) == 0
      && pthread_rwlock_unlock (rwlock) == 0
      && pthread_rwlock_unlock (rwlock) == 0
      && pthread_rwlock_unlock (rwlock) == 0
      && pthread_rwlock_destroy (rwlock) == 0)
    result = PASS;

  return result;
}

/* Tests locking the rwlock as a writer.  */
static int
test_locking_writer (pthread_rwlock_t *rwlock)
{
  int result = FAIL;

  if (pthread_rwlock_init (rwlock, NULL) == 0
      && pthread_rwlock_wrlock (rwlock) == 0 /* Test locking (writer).  */
      && pthread_rwlock_unlock (rwlock) == 0
      && pthread_rwlock_destroy (rwlock) == 0)
    result = PASS;

  return result;
}