+/*
+ * test_urcu.c
+ *
+ * Userspace RCU library - test program
+ *
+ * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ *
+ * Distributed under GPLv2
+ */
+
#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
+#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdio.h>
+#include <assert.h>
#include "urcu.h"
+struct test_array {
+ int a;
+ int b;
+ char c[200];
+};
+
+static struct test_array *test_rcu_pointer;
+
#define NR_READ 10
-#define NR_WRITE 4
+#define NR_WRITE 9
void *thr_reader(void *arg)
{
+ int qparity, i, j;
+ struct test_array *local_ptr;
+
printf("thread %s, thread id : %lu, pid %lu\n",
- "reader", pthread_self(), getpid());
+ "reader", pthread_self(), (unsigned long)getpid());
sleep(2);
urcu_register_thread();
-
+ for (i = 0; i < 1000; i++) {
+ for (j = 0; j < 100000000; j++) {
+ 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());
+ "writer", pthread_self(), (unsigned long)getpid());
sleep(2);
- for (i = 0; i < 1000; i++) {
+ for (i = 0; i < 100000; 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);
+ }
+ new->a = 8;
+ new->b = 12;
+ new->c[55] = 2;
+ old = urcu_publish_content(&test_rcu_pointer, new);
+ rcu_write_unlock();
+ /* can be done after unlock */
+ if (old) {
+ old->a = 0;
+ old->b = 0;
+ old->c[55] = 0;
+ }
+ free(old);
+ usleep(1);
}
return ((void*)2);