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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 <error.h>
20#include <pthread.h>
21#include <stdio.h>
22#include <stdlib.h>
23
24
25static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
26static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
27
28
29static void *
30tf (void *p)
31{
32 int err;
33
34 err = pthread_mutex_lock (&mut);
35 if (err != 0)
36 error (EXIT_FAILURE, err, "child: cannot get mutex");
37
38 puts ("child: got mutex; signalling");
39
40 pthread_cond_signal (&cond);
41
42 puts ("child: unlock");
43
44 err = pthread_mutex_unlock (&mut);
45 if (err != 0)
46 error (EXIT_FAILURE, err, "child: cannot unlock");
47
48 puts ("child: done");
49
50 return NULL;
51}
52
53
54static int
55do_test (void)
56{
57 pthread_t th;
58 int err;
59
60 printf ("&cond = %p\n&mut = %p\n", &cond, &mut);
61
62 puts ("parent: get mutex");
63
64 err = pthread_mutex_lock (&mut);
65 if (err != 0)
66 error (EXIT_FAILURE, err, "parent: cannot get mutex");
67
68 puts ("parent: create child");
69
70 err = pthread_create (&th, NULL, tf, NULL);
71 if (err != 0)
72 error (EXIT_FAILURE, err, "parent: cannot create thread");
73
74 puts ("parent: wait for condition");
75
76 /* This test will fail on spurious wake-ups, which are allowed; however,
77 the current implementation shouldn't produce spurious wake-ups in the
78 scenario we are testing here. */
79 err = pthread_cond_wait (&cond, &mut);
80 if (err != 0)
81 error (EXIT_FAILURE, err, "parent: cannot wait fir signal");
82
83 puts ("parent: got signal");
84
85 err = pthread_join (th, NULL);
86 if (err != 0)
87 error (EXIT_FAILURE, err, "parent: failed to join");
88
89 puts ("done");
90
91 return 0;
92}
93
94
95#define TEST_FUNCTION do_test ()
96#include "../test-skeleton.c"
97

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