-/* Copyright (C) 2002 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
- Copyright (C) 2009 Pierre-Marc Fournier
- Conversion to RCU list.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+/*
+ * Copyright (C) 2002 Free Software Foundation, Inc.
+ * (originally part of the GNU C Library)
+ * Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+ *
+ * Copyright (C) 2009 Pierre-Marc Fournier
+ * Conversion to RCU list.
+ * Copyright (C) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
#ifndef _URCU_RCULIST_H
#define _URCU_RCULIST_H
#include <urcu/list.h>
-#include <urcu.h>
+#include <urcu/arch.h>
+#include <urcu-pointer.h>
/* Add new element at the head of the list.
*/
-static inline void list_add_rcu(list_t *newp, list_t *head)
+static inline void cds_list_add_rcu(struct cds_list_head *newp, struct cds_list_head *head)
{
newp->next = head->next;
newp->prev = head;
- smp_wmb();
+ cmm_smp_wmb();
head->next->prev = newp;
head->next = newp;
}
+/* replace an old entry atomically.
+ */
+static inline void cds_list_replace_rcu(struct cds_list_head *old, struct cds_list_head *_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)
+static inline void cds_list_del_rcu(struct cds_list_head *elem)
{
elem->next->prev = elem->prev;
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 cds_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.
- * 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); \
+#define cds_list_for_each_entry_rcu(pos, head, member) \
+ for (pos = cds_list_entry(rcu_dereference((head)->next), typeof(*pos), member); \
&pos->member != (head); \
- pos = list_entry(rcu_dereference(pos->member.next), typeof(*pos), member))
+ pos = cds_list_entry(rcu_dereference(pos->member.next), typeof(*pos), member))
#endif /* _URCU_RCULIST_H */