Use xchg in publish content

[urcu.git] / urcu.c

diff --git a/urcu.c b/urcu.c
index 23a985b9f9f4cdaf992c227322720e38bc139d85..9fde6238f695b06db846866a704f9ed595bd6d0c 100644 (file)
--- a/urcu.c
+++ b/urcu.c
@@ -151,42 +151,6 @@ void synchronize_rcu(void)
        debug_yield_write();
 }
 
-/*
- * Return old pointer, OK to free, no more reference exist.
- * Called under rcu_write_lock.
- */
-void *urcu_publish_content(void **ptr, void *new)
-{
-       void *oldptr;
-
-       debug_yield_write();
-       internal_urcu_lock();
-       debug_yield_write();
-       /*
-        * We can publish the new pointer before we change the current qparity.
-        * Readers seeing the new pointer while being in the previous qparity
-        * window will make us wait until the end of the quiescent state before
-        * we release the unrelated memory area. However, given we hold the
-        * urcu_mutex, we are making sure that no further garbage collection can
-        * occur until we release the mutex, therefore we guarantee that this
-        * given reader will have completed its execution using the new pointer
-        * when the next quiescent state window will be over.
-        */
-       oldptr = *ptr;
-       debug_yield_write();
-       rcu_assign_pointer(*ptr, new);
-
-       debug_yield_write();
-       switch_qparity();
-       debug_yield_write();
-       switch_qparity();
-       debug_yield_write();
-       internal_urcu_unlock();
-       debug_yield_write();
-
-       return oldptr;
-}
-
 void urcu_add_reader(pthread_t id)
 {
        struct reader_data *oldarray;