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/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_RBTREE_H_
#define _LINUX_RBTREE_H_
#include <sys/stddef.h>
#include <sys/tree.h>
struct rb_node {
RB_ENTRY(rb_node) __entry;
};
#define rb_left __entry.rbe_left
#define rb_right __entry.rbe_right
/*
* We provide a false structure that has the same bit pattern as tree.h
* presents so it matches the member names expected by linux.
*/
struct rb_root {
struct rb_node *rb_node;
};
/*
* In linux all of the comparisons are done by the caller.
*/
int panic_cmp(struct rb_node *one, struct rb_node *two);
RB_HEAD(linux_root, rb_node);
RB_PROTOTYPE(linux_root, rb_node, __entry, panic_cmp);
#define rb_entry(ptr, type, member) container_of(ptr, type, member)
#define RB_EMPTY_ROOT(root) RB_EMPTY((struct linux_root *)root)
#define RB_EMPTY_NODE(node) (RB_PARENT(node, __entry) == node)
#define RB_CLEAR_NODE(node) RB_SET_PARENT(node, node, __entry)
#define rb_insert_color(node, root) \
linux_root_RB_INSERT_COLOR((struct linux_root *)(root), (node))
#define rb_erase(node, root) \
linux_root_RB_REMOVE((struct linux_root *)(root), (node))
#define rb_next(node) RB_NEXT(linux_root, NULL, (node))
#define rb_prev(node) RB_PREV(linux_root, NULL, (node))
#define rb_first(root) RB_MIN(linux_root, (struct linux_root *)(root))
#define rb_last(root) RB_MAX(linux_root, (struct linux_root *)(root))
static inline void
rb_link_node(struct rb_node *node, struct rb_node *parent,
struct rb_node **rb_link)
{
RB_SET(node, parent, __entry);
*rb_link = node;
}
static inline void
rb_replace_node(struct rb_node *victim, struct rb_node *new,
struct rb_root *root)
{
RB_SWAP_CHILD((struct linux_root *)root, victim, new, __entry);
if (victim->rb_left)
RB_SET_PARENT(victim->rb_left, new, __entry);
if (victim->rb_right)
RB_SET_PARENT(victim->rb_right, new, __entry);
*new = *victim;
}
#undef RB_ROOT
#define RB_ROOT (struct rb_root) { NULL }
#endif /* _LINUX_RBTREE_H_ */
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