1 // SPDX-License-Identifier: GPL-2.0
2 #define _GNU_SOURCE
3 #include <linux/membarrier.h>
4 #include <syscall.h>
5 #include <stdio.h>
6 #include <errno.h>
7 #include <string.h>
8 #include <pthread.h>
9
10 #include "membarrier_test_impl.h"
11
12 static int thread_ready, thread_quit;
13 static pthread_mutex_t test_membarrier_thread_mutex =
14 PTHREAD_MUTEX_INITIALIZER;
15 static pthread_cond_t test_membarrier_thread_cond =
16 PTHREAD_COND_INITIALIZER;
17
18 void *test_membarrier_thread(void *arg)
19 {
20 pthread_mutex_lock(&test_membarrier_thread_mutex);
21 thread_ready = 1;
22 pthread_cond_broadcast(&test_membarrier_thread_cond);
23 pthread_mutex_unlock(&test_membarrier_thread_mutex);
24
25 pthread_mutex_lock(&test_membarrier_thread_mutex);
26 while (!thread_quit)
27 pthread_cond_wait(&test_membarrier_thread_cond,
28 &test_membarrier_thread_mutex);
29 pthread_mutex_unlock(&test_membarrier_thread_mutex);
30
31 return NULL;
32 }
33
34 static int test_mt_membarrier(void)
35 {
36 int i;
37 pthread_t test_thread;
38
39 pthread_create(&test_thread, NULL,
40 test_membarrier_thread, NULL);
41
42 pthread_mutex_lock(&test_membarrier_thread_mutex);
43 while (!thread_ready)
44 pthread_cond_wait(&test_membarrier_thread_cond,
45 &test_membarrier_thread_mutex);
46 pthread_mutex_unlock(&test_membarrier_thread_mutex);
47
48 test_membarrier_fail();
49
50 test_membarrier_success();
51
52 pthread_mutex_lock(&test_membarrier_thread_mutex);
53 thread_quit = 1;
54 pthread_cond_broadcast(&test_membarrier_thread_cond);
55 pthread_mutex_unlock(&test_membarrier_thread_mutex);
56
57 pthread_join(test_thread, NULL);
58
59 return 0;
60 }
61
62 int main(int argc, char **argv)
63 {
64 ksft_print_header();
65 ksft_set_plan(16);
66
67 test_membarrier_query();
68
69 /* Multi-threaded */
70 test_mt_membarrier();
71
72 ksft_exit_pass();
73 }
74
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