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1/* Copyright (C) 2004-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
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 <pthread.h>
20#include <stdio.h>
21#include <stdlib.h>
22#include <string.h>
23#include <unistd.h>
24
25
26static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
27static pthread_mutex_t mut = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
28static pthread_mutex_t mut2 = PTHREAD_MUTEX_INITIALIZER;
29
30static void *
31tf (void *p)
32{
33 if (pthread_mutex_lock (&mut) != 0)
34 {
35 printf ("%s: 1st mutex_lock failed\n", __func__);
36 exit (1);
37 }
38 if (pthread_mutex_lock (&mut) != 0)
39 {
40 printf ("%s: 2nd mutex_lock failed\n", __func__);
41 exit (1);
42 }
43 if (pthread_mutex_lock (&mut) != 0)
44 {
45 printf ("%s: 3rd mutex_lock failed\n", __func__);
46 exit (1);
47 }
48
49 if (pthread_mutex_unlock (&mut2) != 0)
50 {
51 printf ("%s: mutex_unlock failed\n", __func__);
52 exit (1);
53 }
54
55 if (pthread_cond_wait (&cond, &mut) != 0)
56 {
57 printf ("%s: cond_wait failed\n", __func__);
58 exit (1);
59 }
60
61 puts ("child: done");
62
63 return NULL;
64}
65
66
67static int
68do_test (void)
69{
70 if (pthread_mutex_lock (&mut2) != 0)
71 {
72 puts ("1st mutex_lock failed");
73 return 1;
74 }
75
76 puts ("parent: create child");
77
78 pthread_t th;
79 int err = pthread_create (&th, NULL, tf, NULL);
80 if (err != 0)
81 {
82 printf ("parent: cannot create thread: %s\n", strerror (err));
83 return 1;
84 }
85
86 /* We have to synchronize with the child. */
87 if (pthread_mutex_lock (&mut2) != 0)
88 {
89 puts ("2nd mutex_lock failed");
90 return 1;
91 }
92
93 /* Give the child to reach to pthread_cond_wait. */
94 sleep (1);
95
96 if (pthread_cond_signal (&cond) != 0)
97 {
98 puts ("cond_signal failed");
99 return 1;
100 }
101
102 err = pthread_join (th, NULL);
103 if (err != 0)
104 {
105 printf ("parent: failed to join: %s\n", strerror (err));
106 return 1;
107 }
108
109 puts ("done");
110
111 return 0;
112}
113
114
115#define TEST_FUNCTION do_test ()
116#include "../test-skeleton.c"
117

Warning: That file was not part of the compilation database. It may have many parsing errors.