+struct test_array {
+ int a;
+ int b;
+ char c[200];
+};
+
+static struct test_array *test_rcu_pointer;
+
+#define NR_READ 1000
+#define NR_WRITE 50
+
+
+void *thr_reader(void *arg)
+{
+ int qparity, i;
+ struct test_array *local_ptr;
+
+ printf("thread %s, thread id : %lu, pid %lu\n",
+ "reader", pthread_self(), getpid());
+ sleep(2);
+
+ urcu_register_thread();
+
+ for (i = 0; i < 1000; i++) {
+ qparity = rcu_read_lock();
+ local_ptr = rcu_dereference(test_rcu_pointer);
+ if (local_ptr) {
+ assert(local_ptr->a == 8);
+ assert(local_ptr->b == 12);
+ assert(local_ptr->c[55] == 2);
+ }
+ rcu_read_unlock(qparity);
+ }
+
+ urcu_unregister_thread();
+
+ return ((void*)1);
+
+}
+
+void *thr_writer(void *arg)
+{
+ int i;
+ struct test_array *new, *old;
+
+ printf("thread %s, thread id : %lu, pid %lu\n",
+ "writer", pthread_self(), getpid());
+ sleep(2);
+
+ for (i = 0; i < 1000; i++) {
+ rcu_write_lock();
+ new = malloc(sizeof(struct test_array));
+ old = test_rcu_pointer;
+ if (old) {
+ assert(old->a == 8);
+ assert(old->b == 12);
+ assert(old->c[55] == 2);
+ }
+ assert(new->a = 8);
+ assert(new->b = 12);
+ assert(new->c[55] = 2);
+ old = urcu_publish_content(&test_rcu_pointer, new);
+ rcu_write_unlock();
+ /* can be done after unlock */
+ free(old);
+ }
+
+ return ((void*)2);
+}