+/*
+ * 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 <unistd.h>
#include <stdio.h>
#include <assert.h>
+#include <sys/syscall.h>
+
+#if defined(_syscall0)
+_syscall0(pid_t, gettid)
+#elif defined(__NR_gettid)
+static inline pid_t gettid(void)
+{
+ return syscall(__NR_gettid);
+}
+#else
+#warning "use pid as tid"
+static inline pid_t gettid(void)
+{
+ return getpid();
+}
+#endif
+
#include "urcu.h"
struct test_array {
static struct test_array *test_rcu_pointer;
-#define NR_READ 1000
-#define NR_WRITE 50
+#define NR_READ 10
+#define NR_WRITE 9
+
+pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
+void rcu_copy_mutex_lock(void)
+{
+ int ret;
+ ret = pthread_mutex_lock(&rcu_copy_mutex);
+ if (ret) {
+ perror("Error in pthread mutex lock");
+ exit(-1);
+ }
+}
+
+void rcu_copy_mutex_unlock(void)
+{
+ int ret;
+
+ ret = pthread_mutex_unlock(&rcu_copy_mutex);
+ if (ret) {
+ perror("Error in pthread mutex unlock");
+ exit(-1);
+ }
+}
void *thr_reader(void *arg)
{
- int qparity, i;
+ int qparity, i, j;
struct test_array *local_ptr;
- printf("thread %s, thread id : %lu, pid %lu\n",
- "reader", pthread_self(), getpid());
+ printf("thread %s, thread id : %lx, tid %lu\n",
+ "reader", pthread_self(), (unsigned long)gettid());
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);
+ for (i = 0; i < 100000; i++) {
+ for (j = 0; j < 100000000; j++) {
+ rcu_read_lock(&qparity);
+ 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);
}
- rcu_read_unlock(qparity);
}
urcu_unregister_thread();
int i;
struct test_array *new, *old;
- printf("thread %s, thread id : %lu, pid %lu\n",
- "writer", pthread_self(), getpid());
+ printf("thread %s, thread id : %lx, tid %lu\n",
+ "writer", pthread_self(), (unsigned long)gettid());
sleep(2);
- for (i = 0; i < 1000; i++) {
- rcu_write_lock();
+ for (i = 0; i < 10000000; i++) {
new = malloc(sizeof(struct test_array));
+ rcu_copy_mutex_lock();
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();
+ new->c[55] = 2;
+ new->b = 12;
+ new->a = 8;
+ old = urcu_publish_content((void **)&test_rcu_pointer, new);
+ rcu_copy_mutex_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);
void *tret;
int i;
+ printf("thread %-6s, thread id : %lx, tid %lu\n",
+ "main", pthread_self(), (unsigned long)gettid());
+
for (i = 0; i < NR_READ; i++) {
err = pthread_create(&tid_reader[i], NULL, thr_reader, NULL);
if (err != 0)
sleep(10);
- for (i = 0; i < NR_WRITE; i++) {
+ for (i = 0; i < NR_READ; i++) {
err = pthread_join(tid_reader[i], &tret);
if (err != 0)
exit(1);
if (err != 0)
exit(1);
}
+ free(test_rcu_pointer);
return 0;
}