+// SPDX-License-Identifier: ISC AND BSD-2-Clause
/* $OpenBSD: tree.h,v 1.14 2015/05/25 03:07:49 deraadt Exp $ */
/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
- * 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, 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.
*/
#ifndef _SYS_TREE_H_
#define _SYS_TREE_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+
/*
* This file defines data structures for different types of trees:
* splay trees and red-black trees.
for ((x) = SPLAY_MIN(name, head); (x) != NULL; \
(x) = SPLAY_NEXT(name, head, x))
-/* Macros that define a red-black tree */
-#define RB_HEAD(name, type) \
- struct name { \
- struct type *rbh_root; /* root of the tree */ \
- }
-
-#define RB_INITIALIZER(root) \
- { \
- NULL \
- }
-
-#define RB_INIT(root) \
- do { \
- (root)->rbh_root = NULL; \
- } while (0)
+/*
+ * Copyright (c) 2016 David Gwynne <dlg@openbsd.org>
+ */
#define RB_BLACK 0
#define RB_RED 1
-#define RB_ENTRY(type) \
- struct { \
- struct type *rbe_left; /* left element */ \
- struct type *rbe_right; /* right element */ \
- struct type *rbe_parent; /* parent element */ \
- int rbe_color; /* node color */ \
- }
-
-#define RB_LEFT(elm, field) (elm)->field.rbe_left
-#define RB_RIGHT(elm, field) (elm)->field.rbe_right
-#define RB_PARENT(elm, field) (elm)->field.rbe_parent
-#define RB_COLOR(elm, field) (elm)->field.rbe_color
-#define RB_ROOT(head) (head)->rbh_root
-#define RB_EMPTY(head) (RB_ROOT(head) == NULL)
-
-#define RB_SET(elm, parent, field) \
- do { \
- RB_PARENT(elm, field) = parent; \
- RB_LEFT(elm, field) = RB_RIGHT(elm, field) = NULL; \
- RB_COLOR(elm, field) = RB_RED; \
- } while (0)
-#define RB_SET_BLACKRED(black, red, field) \
- do { \
- RB_COLOR(black, field) = RB_BLACK; \
- RB_COLOR(red, field) = RB_RED; \
- } while (0)
-
-#ifndef RB_AUGMENT
-#define RB_AUGMENT(x) do {} while (0)
-#endif
-
-#define RB_ROTATE_LEFT(head, elm, tmp, field) \
- do { \
- (tmp) = RB_RIGHT(elm, field); \
- if ((RB_RIGHT(elm, field) = RB_LEFT(tmp, field))) { \
- RB_PARENT(RB_LEFT(tmp, field), field) = (elm); \
- } \
- RB_AUGMENT(elm); \
- if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field))) { \
- if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \
- RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \
- else \
- RB_RIGHT(RB_PARENT(elm, field), field) = \
- (tmp); \
- } else \
- (head)->rbh_root = (tmp); \
- RB_LEFT(tmp, field) = (elm); \
- RB_PARENT(elm, field) = (tmp); \
- RB_AUGMENT(tmp); \
- if ((RB_PARENT(tmp, field))) \
- RB_AUGMENT(RB_PARENT(tmp, field)); \
- } while (0)
-
-#define RB_ROTATE_RIGHT(head, elm, tmp, field) \
- do { \
- (tmp) = RB_LEFT(elm, field); \
- if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field))) { \
- RB_PARENT(RB_RIGHT(tmp, field), field) = (elm); \
- } \
- RB_AUGMENT(elm); \
- if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field))) { \
- if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \
- RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \
- else \
- RB_RIGHT(RB_PARENT(elm, field), field) = \
- (tmp); \
- } else \
- (head)->rbh_root = (tmp); \
- RB_RIGHT(tmp, field) = (elm); \
- RB_PARENT(elm, field) = (tmp); \
- RB_AUGMENT(tmp); \
- if ((RB_PARENT(tmp, field))) \
- RB_AUGMENT(RB_PARENT(tmp, field)); \
- } while (0)
+struct rb_type {
+ int (*t_compare)(const void *, const void *);
+ void (*t_augment)(void *);
+ unsigned int t_offset; /* offset of rb_entry in type */
+};
+
+struct rbt_tree {
+ struct rb_entry *rbt_root;
+};
+
+struct rb_entry {
+ struct rb_entry *rbt_parent;
+ struct rb_entry *rbt_left;
+ struct rb_entry *rbt_right;
+ unsigned int rbt_color;
+};
+
+#define RB_HEAD(_name, _type) \
+ struct _name { \
+ struct rbt_tree rbh_root; \
+ }
-/* Generates prototypes and inline functions */
-#define RB_PROTOTYPE(name, type, field, cmp) \
- RB_PROTOTYPE_INTERNAL(name, type, field, cmp, )
-#define RB_PROTOTYPE_STATIC(name, type, field, cmp) \
- RB_PROTOTYPE_INTERNAL(name, type, field, cmp, \
- __attribute__((__unused__)) static)
-#define RB_PROTOTYPE_INTERNAL(name, type, field, cmp, attr) \
- attr void name##_RB_INSERT_COLOR(struct name *, struct type *); \
- attr void name##_RB_REMOVE_COLOR(struct name *, struct type *, \
- struct type *); \
- attr struct type *name##_RB_REMOVE(struct name *, struct type *); \
- attr struct type *name##_RB_INSERT(struct name *, struct type *); \
- attr struct type *name##_RB_FIND(struct name *, struct type *); \
- attr struct type *name##_RB_NFIND(struct name *, struct type *); \
- attr struct type *name##_RB_NEXT(struct type *); \
- attr struct type *name##_RB_PREV(struct type *); \
- attr struct type *name##_RB_MINMAX(struct name *, int);
-
-
-/* Main rb operation.
- * Moves node close to the key of elm to top
- */
-#define RB_GENERATE(name, type, field, cmp) \
- RB_GENERATE_INTERNAL(name, type, field, cmp, )
-#define RB_GENERATE_STATIC(name, type, field, cmp) \
- RB_GENERATE_INTERNAL(name, type, field, cmp, \
- __attribute__((__unused__)) static)
-#define RB_GENERATE_INTERNAL(name, type, field, cmp, attr) \
- attr void name##_RB_INSERT_COLOR(struct name *head, struct type *elm) \
+#define RB_ENTRY(_type) struct rb_entry
+
+static inline void _rb_init(struct rbt_tree *rbt)
+{
+ rbt->rbt_root = NULL;
+}
+
+static inline int _rb_empty(const struct rbt_tree *rbt)
+{
+ return (rbt->rbt_root == NULL);
+}
+
+void *_rb_insert(const struct rb_type *, struct rbt_tree *, void *);
+void *_rb_remove(const struct rb_type *, struct rbt_tree *, void *);
+void *_rb_find(const struct rb_type *, const struct rbt_tree *, const void *);
+void *_rb_nfind(const struct rb_type *, const struct rbt_tree *, const void *);
+void *_rb_root(const struct rb_type *, const struct rbt_tree *);
+void *_rb_min(const struct rb_type *, const struct rbt_tree *);
+void *_rb_max(const struct rb_type *, const struct rbt_tree *);
+void *_rb_next(const struct rb_type *, void *);
+void *_rb_prev(const struct rb_type *, void *);
+void *_rb_left(const struct rb_type *, void *);
+void *_rb_right(const struct rb_type *, void *);
+void *_rb_parent(const struct rb_type *, void *);
+void _rb_set_left(const struct rb_type *, void *, void *);
+void _rb_set_right(const struct rb_type *, void *, void *);
+void _rb_set_parent(const struct rb_type *, void *, void *);
+void _rb_poison(const struct rb_type *, void *, unsigned long);
+int _rb_check(const struct rb_type *, void *, unsigned long);
+
+#define RB_INITIALIZER(_head) { { NULL } }
+
+#define RB_PROTOTYPE(_name, _type, _field, _cmp) \
+ extern const struct rb_type *const _name##_RB_TYPE; \
+ \
+ __attribute__((__unused__)) static inline void _name##_RB_INIT( \
+ struct _name *head) \
{ \
- struct type *parent, *gparent, *tmp; \
- while ((parent = RB_PARENT(elm, field)) \
- && RB_COLOR(parent, field) == RB_RED) { \
- gparent = RB_PARENT(parent, field); \
- if (parent == RB_LEFT(gparent, field)) { \
- tmp = RB_RIGHT(gparent, field); \
- if (tmp && RB_COLOR(tmp, field) == RB_RED) { \
- RB_COLOR(tmp, field) = RB_BLACK; \
- RB_SET_BLACKRED(parent, gparent, \
- field); \
- elm = gparent; \
- continue; \
- } \
- if (RB_RIGHT(parent, field) == elm) { \
- RB_ROTATE_LEFT(head, parent, tmp, \
- field); \
- tmp = parent; \
- parent = elm; \
- elm = tmp; \
- } \
- RB_SET_BLACKRED(parent, gparent, field); \
- RB_ROTATE_RIGHT(head, gparent, tmp, field); \
- } else { \
- tmp = RB_LEFT(gparent, field); \
- if (tmp && RB_COLOR(tmp, field) == RB_RED) { \
- RB_COLOR(tmp, field) = RB_BLACK; \
- RB_SET_BLACKRED(parent, gparent, \
- field); \
- elm = gparent; \
- continue; \
- } \
- if (RB_LEFT(parent, field) == elm) { \
- RB_ROTATE_RIGHT(head, parent, tmp, \
- field); \
- tmp = parent; \
- parent = elm; \
- elm = tmp; \
- } \
- RB_SET_BLACKRED(parent, gparent, field); \
- RB_ROTATE_LEFT(head, gparent, tmp, field); \
- } \
- } \
- RB_COLOR(head->rbh_root, field) = RB_BLACK; \
+ _rb_init(&head->rbh_root); \
} \
\
- attr void name##_RB_REMOVE_COLOR( \
- struct name *head, struct type *parent, struct type *elm) \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_INSERT(struct _name *head, struct _type *elm) \
{ \
- struct type *tmp; \
- while ((elm == NULL || RB_COLOR(elm, field) == RB_BLACK) \
- && elm != RB_ROOT(head)) { \
- if (RB_LEFT(parent, field) == elm) { \
- tmp = RB_RIGHT(parent, field); \
- if (RB_COLOR(tmp, field) == RB_RED) { \
- RB_SET_BLACKRED(tmp, parent, field); \
- RB_ROTATE_LEFT(head, parent, tmp, \
- field); \
- tmp = RB_RIGHT(parent, field); \
- } \
- if ((RB_LEFT(tmp, field) == NULL \
- || RB_COLOR(RB_LEFT(tmp, field), field) \
- == RB_BLACK) \
- && (RB_RIGHT(tmp, field) == NULL \
- || RB_COLOR(RB_RIGHT(tmp, field), \
- field) \
- == RB_BLACK)) { \
- RB_COLOR(tmp, field) = RB_RED; \
- elm = parent; \
- parent = RB_PARENT(elm, field); \
- } else { \
- if (RB_RIGHT(tmp, field) == NULL \
- || RB_COLOR(RB_RIGHT(tmp, field), \
- field) \
- == RB_BLACK) { \
- struct type *oleft; \
- if ((oleft = RB_LEFT(tmp, \
- field))) \
- RB_COLOR(oleft, \
- field) = \
- RB_BLACK; \
- RB_COLOR(tmp, field) = RB_RED; \
- RB_ROTATE_RIGHT(head, tmp, \
- oleft, field); \
- tmp = RB_RIGHT(parent, field); \
- } \
- RB_COLOR(tmp, field) = \
- RB_COLOR(parent, field); \
- RB_COLOR(parent, field) = RB_BLACK; \
- if (RB_RIGHT(tmp, field)) \
- RB_COLOR(RB_RIGHT(tmp, field), \
- field) = RB_BLACK; \
- RB_ROTATE_LEFT(head, parent, tmp, \
- field); \
- elm = RB_ROOT(head); \
- break; \
- } \
- } else { \
- tmp = RB_LEFT(parent, field); \
- if (RB_COLOR(tmp, field) == RB_RED) { \
- RB_SET_BLACKRED(tmp, parent, field); \
- RB_ROTATE_RIGHT(head, parent, tmp, \
- field); \
- tmp = RB_LEFT(parent, field); \
- } \
- if ((RB_LEFT(tmp, field) == NULL \
- || RB_COLOR(RB_LEFT(tmp, field), field) \
- == RB_BLACK) \
- && (RB_RIGHT(tmp, field) == NULL \
- || RB_COLOR(RB_RIGHT(tmp, field), \
- field) \
- == RB_BLACK)) { \
- RB_COLOR(tmp, field) = RB_RED; \
- elm = parent; \
- parent = RB_PARENT(elm, field); \
- } else { \
- if (RB_LEFT(tmp, field) == NULL \
- || RB_COLOR(RB_LEFT(tmp, field), \
- field) \
- == RB_BLACK) { \
- struct type *oright; \
- if ((oright = RB_RIGHT( \
- tmp, field))) \
- RB_COLOR(oright, \
- field) = \
- RB_BLACK; \
- RB_COLOR(tmp, field) = RB_RED; \
- RB_ROTATE_LEFT(head, tmp, \
- oright, field); \
- tmp = RB_LEFT(parent, field); \
- } \
- RB_COLOR(tmp, field) = \
- RB_COLOR(parent, field); \
- RB_COLOR(parent, field) = RB_BLACK; \
- if (RB_LEFT(tmp, field)) \
- RB_COLOR(RB_LEFT(tmp, field), \
- field) = RB_BLACK; \
- RB_ROTATE_RIGHT(head, parent, tmp, \
- field); \
- elm = RB_ROOT(head); \
- break; \
- } \
- } \
- } \
- if (elm) \
- RB_COLOR(elm, field) = RB_BLACK; \
+ return (struct _type *)_rb_insert(_name##_RB_TYPE, \
+ &head->rbh_root, elm); \
} \
\
- attr struct type *name##_RB_REMOVE(struct name *head, \
- struct type *elm) \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_REMOVE(struct _name *head, struct _type *elm) \
{ \
- struct type *child, *parent, *old = elm; \
- int color; \
- if (RB_LEFT(elm, field) == NULL) \
- child = RB_RIGHT(elm, field); \
- else if (RB_RIGHT(elm, field) == NULL) \
- child = RB_LEFT(elm, field); \
- else { \
- struct type *left; \
- elm = RB_RIGHT(elm, field); \
- while ((left = RB_LEFT(elm, field))) \
- elm = left; \
- child = RB_RIGHT(elm, field); \
- parent = RB_PARENT(elm, field); \
- color = RB_COLOR(elm, field); \
- if (child) \
- RB_PARENT(child, field) = parent; \
- if (parent) { \
- if (RB_LEFT(parent, field) == elm) \
- RB_LEFT(parent, field) = child; \
- else \
- RB_RIGHT(parent, field) = child; \
- RB_AUGMENT(parent); \
- } else \
- RB_ROOT(head) = child; \
- if (RB_PARENT(elm, field) == old) \
- parent = elm; \
- (elm)->field = (old)->field; \
- if (RB_PARENT(old, field)) { \
- if (RB_LEFT(RB_PARENT(old, field), field) \
- == old) \
- RB_LEFT(RB_PARENT(old, field), \
- field) = elm; \
- else \
- RB_RIGHT(RB_PARENT(old, field), \
- field) = elm; \
- RB_AUGMENT(RB_PARENT(old, field)); \
- } else \
- RB_ROOT(head) = elm; \
- RB_PARENT(RB_LEFT(old, field), field) = elm; \
- if (RB_RIGHT(old, field)) \
- RB_PARENT(RB_RIGHT(old, field), field) = elm; \
- if (parent) { \
- left = parent; \
- do { \
- RB_AUGMENT(left); \
- } while ((left = RB_PARENT(left, field))); \
- } \
- goto color; \
- } \
- parent = RB_PARENT(elm, field); \
- color = RB_COLOR(elm, field); \
- if (child) \
- RB_PARENT(child, field) = parent; \
- if (parent) { \
- if (RB_LEFT(parent, field) == elm) \
- RB_LEFT(parent, field) = child; \
- else \
- RB_RIGHT(parent, field) = child; \
- RB_AUGMENT(parent); \
- } else \
- RB_ROOT(head) = child; \
- color: \
- if (color == RB_BLACK) \
- name##_RB_REMOVE_COLOR(head, parent, child); \
- return (old); \
+ return (struct _type *)_rb_remove(_name##_RB_TYPE, \
+ &head->rbh_root, elm); \
} \
\
- /* Inserts a node into the RB tree */ \
- attr struct type *name##_RB_INSERT(struct name *head, \
- struct type *elm) \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_FIND(const struct _name *head, \
+ const struct _type *key) \
{ \
- struct type *tmp; \
- struct type *parent = NULL; \
- int comp = 0; \
- tmp = RB_ROOT(head); \
- while (tmp) { \
- parent = tmp; \
- comp = (cmp)(elm, parent); \
- if (comp < 0) \
- tmp = RB_LEFT(tmp, field); \
- else if (comp > 0) \
- tmp = RB_RIGHT(tmp, field); \
- else \
- return (tmp); \
- } \
- RB_SET(elm, parent, field); \
- if (parent != NULL) { \
- if (comp < 0) \
- RB_LEFT(parent, field) = elm; \
- else \
- RB_RIGHT(parent, field) = elm; \
- RB_AUGMENT(parent); \
- } else \
- RB_ROOT(head) = elm; \
- name##_RB_INSERT_COLOR(head, elm); \
- return (NULL); \
+ return (struct _type *)_rb_find(_name##_RB_TYPE, \
+ &head->rbh_root, key); \
} \
\
- /* Finds the node with the same key as elm */ \
- attr struct type *name##_RB_FIND(struct name *head, struct type *elm) \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_NFIND(const struct _name *head, \
+ const struct _type *key) \
{ \
- struct type *tmp = RB_ROOT(head); \
- int comp; \
- while (tmp) { \
- comp = cmp(elm, tmp); \
- if (comp < 0) \
- tmp = RB_LEFT(tmp, field); \
- else if (comp > 0) \
- tmp = RB_RIGHT(tmp, field); \
- else \
- return (tmp); \
- } \
- return (NULL); \
+ return (struct _type *)_rb_nfind(_name##_RB_TYPE, \
+ &head->rbh_root, key); \
} \
\
- /* Finds the first node greater than or equal to the search key */ \
- attr struct type *name##_RB_NFIND(struct name *head, struct type *elm) \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_ROOT(const struct _name *head) \
{ \
- struct type *tmp = RB_ROOT(head); \
- struct type *res = NULL; \
- int comp; \
- while (tmp) { \
- comp = cmp(elm, tmp); \
- if (comp < 0) { \
- res = tmp; \
- tmp = RB_LEFT(tmp, field); \
- } else if (comp > 0) \
- tmp = RB_RIGHT(tmp, field); \
- else \
- return (tmp); \
- } \
- return (res); \
+ return (struct _type *)_rb_root(_name##_RB_TYPE, \
+ &head->rbh_root); \
} \
\
- /* ARGSUSED */ \
- attr struct type *name##_RB_NEXT(struct type *elm) \
+ __attribute__((__unused__)) static inline int _name##_RB_EMPTY( \
+ const struct _name *head) \
{ \
- if (RB_RIGHT(elm, field)) { \
- elm = RB_RIGHT(elm, field); \
- while (RB_LEFT(elm, field)) \
- elm = RB_LEFT(elm, field); \
- } else { \
- if (RB_PARENT(elm, field) \
- && (elm == RB_LEFT(RB_PARENT(elm, field), field))) \
- elm = RB_PARENT(elm, field); \
- else { \
- while (RB_PARENT(elm, field) \
- && (elm \
- == RB_RIGHT(RB_PARENT(elm, field), \
- field))) \
- elm = RB_PARENT(elm, field); \
- elm = RB_PARENT(elm, field); \
- } \
- } \
- return (elm); \
+ return _rb_empty(&head->rbh_root); \
} \
\
- /* ARGSUSED */ \
- attr struct type *name##_RB_PREV(struct type *elm) \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_MIN(const struct _name *head) \
{ \
- if (RB_LEFT(elm, field)) { \
- elm = RB_LEFT(elm, field); \
- while (RB_RIGHT(elm, field)) \
- elm = RB_RIGHT(elm, field); \
- } else { \
- if (RB_PARENT(elm, field) \
- && (elm \
- == RB_RIGHT(RB_PARENT(elm, field), field))) \
- elm = RB_PARENT(elm, field); \
- else { \
- while (RB_PARENT(elm, field) \
- && (elm \
- == RB_LEFT(RB_PARENT(elm, field), \
- field))) \
- elm = RB_PARENT(elm, field); \
- elm = RB_PARENT(elm, field); \
- } \
- } \
- return (elm); \
+ return (struct _type *)_rb_min(_name##_RB_TYPE, \
+ &head->rbh_root); \
} \
\
- attr struct type *name##_RB_MINMAX(struct name *head, int val) \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_MAX(const struct _name *head) \
{ \
- struct type *tmp = RB_ROOT(head); \
- struct type *parent = NULL; \
- while (tmp) { \
- parent = tmp; \
- if (val < 0) \
- tmp = RB_LEFT(tmp, field); \
- else \
- tmp = RB_RIGHT(tmp, field); \
- } \
- return (parent); \
+ return (struct _type *)_rb_max(_name##_RB_TYPE, \
+ &head->rbh_root); \
+ } \
+ \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_NEXT(struct _type *elm) \
+ { \
+ return (struct _type *)_rb_next(_name##_RB_TYPE, elm); \
+ } \
+ \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_PREV(struct _type *elm) \
+ { \
+ return (struct _type *)_rb_prev(_name##_RB_TYPE, elm); \
+ } \
+ \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_LEFT(struct _type *elm) \
+ { \
+ return (struct _type *)_rb_left(_name##_RB_TYPE, elm); \
+ } \
+ \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_RIGHT(struct _type *elm) \
+ { \
+ return (struct _type *)_rb_right(_name##_RB_TYPE, elm); \
+ } \
+ \
+ __attribute__((__unused__)) static inline struct _type \
+ *_name##_RB_PARENT(struct _type *elm) \
+ { \
+ return (struct _type *)_rb_parent(_name##_RB_TYPE, elm); \
+ } \
+ \
+ __attribute__((__unused__)) static inline void _name##_RB_SET_LEFT( \
+ struct _type *elm, struct _type *left) \
+ { \
+ _rb_set_left(_name##_RB_TYPE, elm, left); \
+ } \
+ \
+ __attribute__((__unused__)) static inline void _name##_RB_SET_RIGHT( \
+ struct _type *elm, struct _type *right) \
+ { \
+ _rb_set_right(_name##_RB_TYPE, elm, right); \
+ } \
+ \
+ __attribute__((__unused__)) static inline void _name##_RB_SET_PARENT( \
+ struct _type *elm, struct _type *parent) \
+ { \
+ _rb_set_parent(_name##_RB_TYPE, elm, parent); \
+ } \
+ \
+ __attribute__((__unused__)) static inline void _name##_RB_POISON( \
+ struct _type *elm, unsigned long poison) \
+ { \
+ _rb_poison(_name##_RB_TYPE, elm, poison); \
+ } \
+ \
+ __attribute__((__unused__)) static inline int _name##_RB_CHECK( \
+ struct _type *elm, unsigned long poison) \
+ { \
+ return _rb_check(_name##_RB_TYPE, elm, poison); \
}
-#define RB_NEGINF -1
-#define RB_INF 1
-
-#define RB_INSERT(name, x, y) name##_RB_INSERT(x, y)
-#define RB_REMOVE(name, x, y) name##_RB_REMOVE(x, y)
-#define RB_FIND(name, x, y) name##_RB_FIND(x, y)
-#define RB_NFIND(name, x, y) name##_RB_NFIND(x, y)
-#define RB_NEXT(name, x, y) name##_RB_NEXT(y)
-#define RB_PREV(name, x, y) name##_RB_PREV(y)
-#define RB_MIN(name, x) name##_RB_MINMAX(x, RB_NEGINF)
-#define RB_MAX(name, x) name##_RB_MINMAX(x, RB_INF)
-
-#define RB_FOREACH(x, name, head) \
- for ((x) = RB_MIN(name, head); (x) != NULL; (x) = name##_RB_NEXT(x))
-
-#define RB_FOREACH_SAFE(x, name, head, y) \
- for ((x) = RB_MIN(name, head); \
- ((x) != NULL) && ((y) = name##_RB_NEXT(x), 1); (x) = (y))
-
-#define RB_FOREACH_REVERSE(x, name, head) \
- for ((x) = RB_MAX(name, head); (x) != NULL; (x) = name##_RB_PREV(x))
+#define RB_GENERATE_INTERNAL(_name, _type, _field, _cmp, _aug) \
+ static int _name##_RB_COMPARE(const void *lptr, const void *rptr) \
+ { \
+ const struct _type *l = lptr, *r = rptr; \
+ return _cmp(l, r); \
+ } \
+ static const struct rb_type _name##_RB_INFO = { \
+ _name##_RB_COMPARE, _aug, offsetof(struct _type, _field), \
+ }; \
+ const struct rb_type *const _name##_RB_TYPE = &_name##_RB_INFO;
-#define RB_FOREACH_REVERSE_SAFE(x, name, head, y) \
- for ((x) = RB_MAX(name, head); \
- ((x) != NULL) && ((y) = name##_RB_PREV(x), 1); (x) = (y))
+#define RB_GENERATE_AUGMENT(_name, _type, _field, _cmp, _aug) \
+ static void _name##_RB_AUGMENT(void *ptr) \
+ { \
+ struct _type *p = ptr; \
+ return _aug(p); \
+ } \
+ RB_GENERATE_INTERNAL(_name, _type, _field, _cmp, _name##_RB_AUGMENT)
+
+#define RB_GENERATE(_name, _type, _field, _cmp) \
+ RB_GENERATE_INTERNAL(_name, _type, _field, _cmp, NULL)
+
+#define RB_INIT(_name, _head) _name##_RB_INIT(_head)
+#define RB_INSERT(_name, _head, _elm) _name##_RB_INSERT(_head, _elm)
+#define RB_REMOVE(_name, _head, _elm) _name##_RB_REMOVE(_head, _elm)
+#define RB_FIND(_name, _head, _key) _name##_RB_FIND(_head, _key)
+#define RB_NFIND(_name, _head, _key) _name##_RB_NFIND(_head, _key)
+#define RB_ROOT(_name, _head) _name##_RB_ROOT(_head)
+#define RB_EMPTY(_name, _head) _name##_RB_EMPTY(_head)
+#define RB_MIN(_name, _head) _name##_RB_MIN(_head)
+#define RB_MAX(_name, _head) _name##_RB_MAX(_head)
+#define RB_NEXT(_name, _elm) _name##_RB_NEXT(_elm)
+#define RB_PREV(_name, _elm) _name##_RB_PREV(_elm)
+#define RB_LEFT(_name, _elm) _name##_RB_LEFT(_elm)
+#define RB_RIGHT(_name, _elm) _name##_RB_RIGHT(_elm)
+#define RB_PARENT(_name, _elm) _name##_RB_PARENT(_elm)
+#define RB_SET_LEFT(_name, _elm, _l) _name##_RB_SET_LEFT(_elm, _l)
+#define RB_SET_RIGHT(_name, _elm, _r) _name##_RB_SET_RIGHT(_elm, _r)
+#define RB_SET_PARENT(_name, _elm, _p) _name##_RB_SET_PARENT(_elm, _p)
+#define RB_POISON(_name, _elm, _p) _name##_RB_POISON(_elm, _p)
+#define RB_CHECK(_name, _elm, _p) _name##_RB_CHECK(_elm, _p)
+
+#define RB_FOREACH(_e, _name, _head) \
+ for ((_e) = RB_MIN(_name, (_head)); (_e) != NULL; \
+ (_e) = RB_NEXT(_name, (_e)))
+
+#define RB_FOREACH_SAFE(_e, _name, _head, _n) \
+ for ((_e) = RB_MIN(_name, (_head)); \
+ (_e) != NULL && ((_n) = RB_NEXT(_name, (_e)), 1); (_e) = (_n))
+
+#define RB_FOREACH_REVERSE(_e, _name, _head) \
+ for ((_e) = RB_MAX(_name, (_head)); (_e) != NULL; \
+ (_e) = RB_PREV(_name, (_e)))
+
+#define RB_FOREACH_REVERSE_SAFE(_e, _name, _head, _n) \
+ for ((_e) = RB_MAX(_name, (_head)); \
+ (_e) != NULL && ((_n) = RB_PREV(_name, (_e)), 1); (_e) = (_n))
+
+#ifdef __cplusplus
+}
+#endif
#endif /* _SYS_TREE_H_ */
projects / mirror_frr.git / blobdiff