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// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#include <linux/membarrier.h>
#include <syscall.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <pthread.h>
#include "membarrier_test_impl.h"
static int thread_ready, thread_quit;
static pthread_mutex_t test_membarrier_thread_mutex =
PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t test_membarrier_thread_cond =
PTHREAD_COND_INITIALIZER;
void *test_membarrier_thread(void *arg)
{
pthread_mutex_lock(&test_membarrier_thread_mutex);
thread_ready = 1;
pthread_cond_broadcast(&test_membarrier_thread_cond);
pthread_mutex_unlock(&test_membarrier_thread_mutex);
pthread_mutex_lock(&test_membarrier_thread_mutex);
while (!thread_quit)
pthread_cond_wait(&test_membarrier_thread_cond,
&test_membarrier_thread_mutex);
pthread_mutex_unlock(&test_membarrier_thread_mutex);
return NULL;
}
static int test_mt_membarrier(void)
{
int i;
pthread_t test_thread;
pthread_create(&test_thread, NULL,
test_membarrier_thread, NULL);
pthread_mutex_lock(&test_membarrier_thread_mutex);
while (!thread_ready)
pthread_cond_wait(&test_membarrier_thread_cond,
&test_membarrier_thread_mutex);
pthread_mutex_unlock(&test_membarrier_thread_mutex);
test_membarrier_fail();
test_membarrier_success();
pthread_mutex_lock(&test_membarrier_thread_mutex);
thread_quit = 1;
pthread_cond_broadcast(&test_membarrier_thread_cond);
pthread_mutex_unlock(&test_membarrier_thread_mutex);
pthread_join(test_thread, NULL);
return 0;
}
int main(int argc, char **argv)
{
ksft_print_header();
ksft_set_plan(16);
test_membarrier_query();
/* Multi-threaded */
test_mt_membarrier();
ksft_exit_pass();
}
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