63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
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#ifndef _LINUX_RBTREE_H
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#define _LINUX_RBTREE_H
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#if defined (__GNUC__)
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#elif defined (MSVC)
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#define __inline__ __inline
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#define inline __inline
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#else
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#endif
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struct rb_node {
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struct rb_node *rb_left; /* left element */
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struct rb_node *rb_right; /* right element */
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struct rb_node *rb_parent; /* parent element */
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int rb_color; /* node color */
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};
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struct rb_root {
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struct rb_node *rb_node; /* root of the tree */
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};
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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#if defined (__GNUC__)
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#define RB_ROOT ((struct rb_root){NULL})
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#elif defined (MSVC)
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#define RB_ROOT {NULL}//{struct rb_root _x = {NULL};}
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#else
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#endif
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#define rb_entry(p, container, field) \
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((container *) ((char *)p - ((char *)&(((container *)0)->field))))
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#define RB_BLACK 0
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#define RB_RED 1
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extern void rb_insert_color(struct rb_node *, struct rb_root *);
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extern void rb_erase(struct rb_node *, struct rb_root *);
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/* Find logical next and previous nodes in a tree */
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extern struct rb_node *rb_next(struct rb_node *);
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extern struct rb_node *rb_prev(struct rb_node *);
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extern struct rb_node *rb_first(struct rb_root *);
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/* Fast replacement of a single node without remove/rebalance/add/rebalance */
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extern void rb_replace_node(struct rb_node *victim, struct rb_node *new,
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struct rb_root *root);
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static inline void rb_link_node(struct rb_node * node, struct rb_node * parent,
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struct rb_node ** rb_link)
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{
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node->rb_parent = parent;
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node->rb_color = RB_RED;
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node->rb_left = node->rb_right = NULL;
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*rb_link = node;
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}
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#endif /* _LINUX_RBTREE_H */
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