1 /*
2 * Copyright (c) 2016 Cyril Hrubis <chrubis@suse.cz>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 /*
20 * Test for callback thread safety.
21 */
22 #include <pthread.h>
23 #include "tst_test.h"
24
25 #define THREADS 10
26
27 static pthread_barrier_t barrier;
28
setup(void)29 static void setup(void)
30 {
31 pthread_barrier_init(&barrier, NULL, THREADS);
32
33 tst_res(TINFO, "setup() executed");
34 }
35
cleanup(void)36 static void cleanup(void)
37 {
38 static int flag;
39
40 /* Avoid subsequent threads to enter the cleanup */
41 if (tst_atomic_inc(&flag) != 1)
42 pthread_exit(NULL);
43
44 tst_res(TINFO, "cleanup() started");
45 usleep(10000);
46 tst_res(TINFO, "cleanup() finished");
47 }
48
worker(void * id)49 static void *worker(void *id)
50 {
51 tst_res(TINFO, "Thread %ld waiting...", (long)id);
52 pthread_barrier_wait(&barrier);
53 tst_brk(TBROK, "Failure %ld", (long)id);
54
55 return NULL;
56 }
57
do_test(void)58 static void do_test(void)
59 {
60 long i;
61 pthread_t threads[THREADS];
62
63 for (i = 0; i < THREADS; i++)
64 pthread_create(threads+i, NULL, worker, (void*)i);
65
66 for (i = 0; i < THREADS; i++) {
67 tst_res(TINFO, "Joining thread %li", i);
68 pthread_join(threads[i], NULL);
69 }
70 }
71
72 static struct tst_test test = {
73 .test_all = do_test,
74 .setup = setup,
75 .cleanup = cleanup,
76 };
77