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Rename all memory primitives with prefix cmm_
[userspace-rcu.git]
/
urcu
/
rculist.h
diff --git
a/urcu/rculist.h
b/urcu/rculist.h
index e0ff93923fa3ffd2b5675fc273f4ebd6ddf3b3e6..3a4e335d8e457262cee3baf39f03d2b9aa7b3bac 100644
(file)
--- a/
urcu/rculist.h
+++ b/
urcu/rculist.h
@@
-4,6
+4,7
@@
Copyright (C) 2009 Pierre-Marc Fournier
Conversion to RCU list.
Copyright (C) 2009 Pierre-Marc Fournier
Conversion to RCU list.
+ Copyright (C) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@
-33,11
+34,20
@@
static inline void list_add_rcu(list_t *newp, list_t *head)
{
newp->next = head->next;
newp->prev = head;
{
newp->next = head->next;
newp->prev = head;
- smp_wmb();
+
cmm_
smp_wmb();
head->next->prev = newp;
head->next = newp;
}
head->next->prev = newp;
head->next = newp;
}
+/* replace an old entry atomically.
+ */
+static inline void list_replace_rcu(list_t *old, list_t *_new)
+{
+ _new->next = old->next;
+ _new->prev = old->prev;
+ rcu_assign_pointer(_new->prev->next, _new);
+ _new->next->prev = _new;
+}
/* Remove element from list. */
static inline void list_del_rcu(list_t *elem)
/* Remove element from list. */
static inline void list_del_rcu(list_t *elem)
@@
-46,11
+56,19
@@
static inline void list_del_rcu(list_t *elem)
elem->prev->next = elem->next;
}
elem->prev->next = elem->next;
}
+/*
+ * Iteration through all elements of the list must be done while rcu_read_lock()
+ * is held.
+ */
+
+/* Iterate forward over the elements of the list. */
+#define list_for_each_rcu(pos, head) \
+ for (pos = rcu_dereference((head)->next); pos != (head); \
+ pos = rcu_dereference(pos->next))
+
/* Iterate through elements of the list.
/* Iterate through elements of the list.
- * This must be done while rcu_read_lock() is held.
*/
*/
-
#define list_for_each_entry_rcu(pos, head, member) \
for (pos = list_entry(rcu_dereference((head)->next), typeof(*pos), member); \
&pos->member != (head); \
#define list_for_each_entry_rcu(pos, head, member) \
for (pos = list_entry(rcu_dereference((head)->next), typeof(*pos), member); \
&pos->member != (head); \
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