3 (C) 1999 Andrea Arcangeli <andrea@suse.de>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 linux/include/linux/rbtree.h
21 To use rbtrees you'll have to implement your own insert and search cores.
22 This will avoid us to use callbacks and to drop drammatically performances.
23 I know it's not the cleaner way, but in C (not in C++) to get
24 performances and genericity...
26 See Documentation/rbtree.txt for documentation and samples.
29 #ifndef _LINUX_RBTREE_H
30 #define _LINUX_RBTREE_H
35 unsigned long __rb_parent_color;
36 struct rb_node *rb_right;
37 struct rb_node *rb_left;
41 struct rb_node *rb_node;
45 #define rb_parent(r) ((struct rb_node *)((r)->__rb_parent_color & ~3))
46 #define rb_entry(ptr, type, member) container_of(ptr, type, member)
48 extern void rb_insert_color(struct rb_node *, struct rb_root *);
49 extern void rb_erase(struct rb_node *, struct rb_root *);
51 static inline void rb_link_node(struct rb_node * node, struct rb_node * parent,
52 struct rb_node ** rb_link)
54 node->__rb_parent_color = (unsigned long)parent;
55 node->rb_left = node->rb_right = NULL;
60 #endif /* _LINUX_RBTREE_H */