1 /* Copyright (C) 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
5 Copyright (C) 2009 Pierre-Marc Fournier
6 Conversion to RCU list.
7 Copyright (C) 2010 Mathieu Desnoyers
9 The GNU C Library is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Lesser General Public
11 License as published by the Free Software Foundation; either
12 version 2.1 of the License, or (at your option) any later version.
14 The GNU C Library is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
19 You should have received a copy of the GNU Lesser General Public
20 License along with the GNU C Library; if not, write to the Free
21 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 #ifndef _URCU_RCUHLIST_H
25 #define _URCU_RCUHLIST_H
27 #include <urcu/hlist.h>
28 #include <urcu/arch.h>
29 #include <urcu-pointer.h>
31 /* Add new element at the head of the list.
33 static inline void cds_hlist_add_head_rcu(struct cds_hlist_node
*newp
,
34 struct cds_hlist_head
*head
)
36 newp
->next
= head
->next
;
37 newp
->prev
= (struct cds_hlist_node
*)head
;
40 head
->next
->prev
= newp
;
44 /* Remove element from list. */
45 static inline void cds_hlist_del_rcu(struct cds_hlist_node
*elem
)
48 elem
->next
->prev
= elem
->prev
;
49 elem
->prev
->next
= elem
->next
;
53 /* Iterate through elements of the list.
54 * This must be done while rcu_read_lock() is held.
57 #define cds_hlist_for_each_entry_rcu(entry, pos, head, member) \
58 for (pos = rcu_dereference((head)->next), \
59 entry = cds_hlist_entry(pos, typeof(*entry), member); \
61 pos = rcu_dereference(pos->next), \
62 entry = cds_hlist_entry(pos, typeof(*entry), member))
64 #endif /* _URCU_RCUHLIST_H */
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