// SPDX-License-Identifier: GPL-2.0
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#define _GNU_SOURCE
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#include <linux/membarrier.h>
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#include <syscall.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <pthread.h>
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#include "membarrier_test_impl.h"
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static int thread_ready, thread_quit;
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static pthread_mutex_t test_membarrier_thread_mutex =
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PTHREAD_MUTEX_INITIALIZER;
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static pthread_cond_t test_membarrier_thread_cond =
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PTHREAD_COND_INITIALIZER;
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void *test_membarrier_thread(void *arg)
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{
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pthread_mutex_lock(&test_membarrier_thread_mutex);
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thread_ready = 1;
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pthread_cond_broadcast(&test_membarrier_thread_cond);
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pthread_mutex_unlock(&test_membarrier_thread_mutex);
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pthread_mutex_lock(&test_membarrier_thread_mutex);
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while (!thread_quit)
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pthread_cond_wait(&test_membarrier_thread_cond,
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&test_membarrier_thread_mutex);
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pthread_mutex_unlock(&test_membarrier_thread_mutex);
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return NULL;
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}
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static int test_mt_membarrier(void)
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{
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int i;
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pthread_t test_thread;
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pthread_create(&test_thread, NULL,
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test_membarrier_thread, NULL);
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pthread_mutex_lock(&test_membarrier_thread_mutex);
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while (!thread_ready)
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pthread_cond_wait(&test_membarrier_thread_cond,
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&test_membarrier_thread_mutex);
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pthread_mutex_unlock(&test_membarrier_thread_mutex);
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test_membarrier_fail();
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test_membarrier_success();
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pthread_mutex_lock(&test_membarrier_thread_mutex);
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thread_quit = 1;
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pthread_cond_broadcast(&test_membarrier_thread_cond);
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pthread_mutex_unlock(&test_membarrier_thread_mutex);
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pthread_join(test_thread, NULL);
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return 0;
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}
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int main(int argc, char **argv)
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{
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ksft_print_header();
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ksft_set_plan(13);
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test_membarrier_query();
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/* Multi-threaded */
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test_mt_membarrier();
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return ksft_exit_pass();
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}
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