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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 Jakub Jelinek <jakub@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 <errno.h>
20#include <limits.h>
21#include <pthread.h>
22#include <stdbool.h>
23#include <stdio.h>
24#include <stdlib.h>
25#include <unistd.h>
26
27pthread_cond_t cv = PTHREAD_COND_INITIALIZER;
28pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
29bool n, exiting;
30FILE *f;
31enum { count = 8 }; /* Number of worker threads. */
32
33void *
34tf (void *dummy)
35{
36 bool loop = true;
37
38 while (loop)
39 {
40 pthread_mutex_lock (&lock);
41 while (n && !exiting)
42 pthread_cond_wait (&cv, &lock);
43 n = true;
44 pthread_mutex_unlock (&lock);
45
46 fputs (".", f);
47
48 pthread_mutex_lock (&lock);
49 n = false;
50 if (exiting)
51 loop = false;
52#ifdef UNLOCK_AFTER_BROADCAST
53 pthread_cond_broadcast (&cv);
54 pthread_mutex_unlock (&lock);
55#else
56 pthread_mutex_unlock (&lock);
57 pthread_cond_broadcast (&cv);
58#endif
59 }
60
61 return NULL;
62}
63
64int
65do_test (void)
66{
67 f = fopen ("/dev/null", "w");
68 if (f == NULL)
69 {
70 printf ("couldn't open /dev/null, %m\n");
71 return 1;
72 }
73
74 pthread_t th[count];
75 pthread_attr_t attr;
76 int i, ret, sz;
77 pthread_attr_init (&attr);
78 sz = sysconf (_SC_PAGESIZE);
79 if (sz < PTHREAD_STACK_MIN)
80 sz = PTHREAD_STACK_MIN;
81 pthread_attr_setstacksize (&attr, sz);
82 for (i = 0; i < count; ++i)
83 if ((ret = pthread_create (&th[i], &attr, tf, NULL)) != 0)
84 {
85 errno = ret;
86 printf ("pthread_create %d failed: %m\n", i);
87 return 1;
88 }
89
90 struct timespec ts = { .tv_sec = 20, .tv_nsec = 0 };
91 while (nanosleep (&ts, &ts) != 0);
92
93 pthread_mutex_lock (&lock);
94 exiting = true;
95 pthread_mutex_unlock (&lock);
96
97 for (i = 0; i < count; ++i)
98 pthread_join (th[i], NULL);
99
100 fclose (f);
101 return 0;
102}
103
104#define TEST_FUNCTION do_test ()
105#define TIMEOUT 40
106#include "../test-skeleton.c"
107

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