about summary refs log tree commit diff
path: root/htl/tests/test-9.c
blob: ad6bc36de5ee288d2ffba407e8e49aa478beebb1 (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
/* Test recursive mutexes.
   Copyright (C) 2000-2018 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 Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If
   not, see <http://www.gnu.org/licenses/>.  */

#define _GNU_SOURCE

#include <pthread.h>
#include <assert.h>
#include <error.h>
#include <errno.h>

#define THREADS 10

int foo;

void *
thr (void *arg)
{
  int i;

  pthread_mutex_lock (arg);

  foo = pthread_self ();

  for (i = 0; i < 500; i++)
    pthread_mutex_lock (arg);
  for (i = 0; i < 500; i++)
    pthread_mutex_unlock (arg);

  assert (foo == pthread_self ());

  pthread_mutex_unlock (arg);

  return 0;
}

int
main (int argc, char **argv)
{
  error_t err;
  int i;
  pthread_t tid[THREADS];
  pthread_mutexattr_t mattr;
  pthread_mutex_t mutex;

  err = pthread_mutexattr_init (&mattr);
  if (err)
    error (1, err, "pthread_mutexattr_init");

  err = pthread_mutexattr_settype (&mattr, PTHREAD_MUTEX_RECURSIVE);
  if (err)
    error (1, err, "pthread_mutexattr_settype");

  err = pthread_mutex_init (&mutex, &mattr);
  if (err)
    error (1, err, "pthread_mutex_init");

  err = pthread_mutexattr_destroy (&mattr);
  if (err)
    error (1, err, "pthread_mutexattr_destroy");

  pthread_mutex_lock (&mutex);
  pthread_mutex_lock (&mutex);
  pthread_mutex_unlock (&mutex);
  pthread_mutex_unlock (&mutex);

  for (i = 0; i < THREADS; i++)
    {
      err = pthread_create (&tid[i], 0, thr, &mutex);
      if (err)
	error (1, err, "pthread_create (%d)", i);
    }

  for (i = 0; i < THREADS; i++)
    {
      void *ret;

      err = pthread_join (tid[i], &ret);
      if (err)
	error (1, err, "pthread_join");

      assert (ret == 0);
    }

  err = pthread_mutex_destroy (&mutex);
  if (err)
    error (1, err, "pthread_mutex_destroy");

  return 0;
}