1 | /* Copyright (C) 2004-2024 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <limits.h> |
20 | #include <pthread.h> |
21 | #include <stdbool.h> |
22 | #include <stdio.h> |
23 | #include <stdlib.h> |
24 | #include <unistd.h> |
25 | |
26 | pthread_cond_t cv = PTHREAD_COND_INITIALIZER; |
27 | pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; |
28 | bool n, exiting; |
29 | FILE *f; |
30 | enum { count = 8 }; /* Number of worker threads. */ |
31 | |
32 | void * |
33 | tf (void *dummy) |
34 | { |
35 | bool loop = true; |
36 | |
37 | while (loop) |
38 | { |
39 | pthread_mutex_lock (mutex: &lock); |
40 | while (n && !exiting) |
41 | pthread_cond_wait (cond: &cv, mutex: &lock); |
42 | n = true; |
43 | pthread_mutex_unlock (mutex: &lock); |
44 | |
45 | fputs ("." , f); |
46 | |
47 | pthread_mutex_lock (mutex: &lock); |
48 | n = false; |
49 | if (exiting) |
50 | loop = false; |
51 | #ifdef UNLOCK_AFTER_BROADCAST |
52 | pthread_cond_broadcast (&cv); |
53 | pthread_mutex_unlock (&lock); |
54 | #else |
55 | pthread_mutex_unlock (mutex: &lock); |
56 | pthread_cond_broadcast (cond: &cv); |
57 | #endif |
58 | } |
59 | |
60 | return NULL; |
61 | } |
62 | |
63 | int |
64 | do_test (void) |
65 | { |
66 | f = fopen ("/dev/null" , "w" ); |
67 | if (f == NULL) |
68 | { |
69 | printf (format: "couldn't open /dev/null, %m\n" ); |
70 | return 1; |
71 | } |
72 | |
73 | pthread_t th[count]; |
74 | pthread_attr_t attr; |
75 | int i, ret, sz; |
76 | pthread_attr_init (attr: &attr); |
77 | sz = sysconf (_SC_PAGESIZE); |
78 | #ifdef PTHREAD_STACK_MIN |
79 | if (sz < PTHREAD_STACK_MIN) |
80 | sz = PTHREAD_STACK_MIN; |
81 | #endif |
82 | pthread_attr_setstacksize (attr: &attr, stacksize: sz); |
83 | for (i = 0; i < count; ++i) |
84 | if ((ret = pthread_create (newthread: &th[i], attr: &attr, start_routine: tf, NULL)) != 0) |
85 | { |
86 | errno = ret; |
87 | printf (format: "pthread_create %d failed: %m\n" , i); |
88 | return 1; |
89 | } |
90 | |
91 | struct timespec ts = { .tv_sec = 20, .tv_nsec = 0 }; |
92 | while (nanosleep (requested_time: &ts, remaining: &ts) != 0); |
93 | |
94 | pthread_mutex_lock (mutex: &lock); |
95 | exiting = true; |
96 | pthread_mutex_unlock (mutex: &lock); |
97 | |
98 | for (i = 0; i < count; ++i) |
99 | pthread_join (th: th[i], NULL); |
100 | |
101 | fclose (f); |
102 | return 0; |
103 | } |
104 | |
105 | #define TEST_FUNCTION do_test () |
106 | #define TIMEOUT 40 |
107 | #include "../test-skeleton.c" |
108 | |