Allow taking address of rcu_read_lock() and rcu_read_unlock()

[urcu.git] / urcu-defer.c

diff --git a/urcu-defer.c b/urcu-defer.c
index 28bb18ccc2f33f607f1d9b4dfc9c4c4da4d0eeef..3f596ae14882e4a635529baa663312b33b2ad247 100644 (file)
--- a/urcu-defer.c
+++ b/urcu-defer.c
@@ -339,13 +339,15 @@ static void stop_defer_thread(void)
        assert(!ret);
 }
 
-void rcu_defer_register_thread(void)
+int rcu_defer_register_thread(void)
 {
        int was_empty;
 
        assert(defer_queue.last_head == 0);
        assert(defer_queue.q == NULL);
        defer_queue.q = malloc(sizeof(void *) * DEFER_QUEUE_SIZE);
+       if (!defer_queue.q)
+               return -ENOMEM;
 
        mutex_lock(&defer_thread_mutex);
        mutex_lock(&rcu_defer_mutex);
@@ -356,6 +358,7 @@ void rcu_defer_register_thread(void)
        if (was_empty)
                start_defer_thread();
        mutex_unlock(&defer_thread_mutex);
+       return 0;
 }
 
 void rcu_defer_unregister_thread(void)