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标题:NetBSD的红黑树实现
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renkejun1942
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来 自:不是这样
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结帖率:95.65%
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 问题点数:0 回复次数:9 
NetBSD的红黑树实现
原来论坛有字符上限的限制。
不得不截断发在1.2.3楼。



程序代码:
/*    $NetBSD: tree.h,v 1.8 2004/03/28 19:38:30 provos Exp $    */
/*    $OpenBSD: tree.h,v 1.7 2002/10/17 21:51:54 art Exp $    */
/* $FreeBSD$ */

/*-

 * 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_

#include <sys/cdefs.h>

/*

 * This file defines data structures for different types of trees:

 * splay trees and red-black trees.

 *

 * A splay tree is a self-organizing data structure.  Every operation

 * on the tree causes a splay to happen.  The splay moves the requested

 * node to the root of the tree and partly rebalances it.

 *

 * This has the benefit that request locality causes faster lookups as

 * the requested nodes move to the top of the tree.  On the other hand,

 * every lookup causes memory writes.

 *

 * The Balance Theorem bounds the total access time for m operations

 * and n inserts on an initially empty tree as O((m + n)lg n).  The

 * amortized cost for a sequence of m accesses to a splay tree is O(lg n);

 *

 * A red-black tree is a binary search tree with the node color as an

 * extra attribute.  It fulfills a set of conditions:

 *    - every search path from the root to a leaf consists of the

 *      same number of black nodes,

 *    - each red node (except for the root) has a black parent,

 *    - each leaf node is black.

 *

 * Every operation on a red-black tree is bounded as O(lg n).

 * The maximum height of a red-black tree is 2lg (n+1).

 */

#define SPLAY_HEAD(name, type)                        \
struct name {                                \
    struct type *sph_root; /* root of the tree */            \
}

#define SPLAY_INITIALIZER(root)                        \
    { NULL }

#define SPLAY_INIT(root) do {                        \
    (root)->sph_root = NULL;                    \
} while (/*CONSTCOND*/ 0)

#define SPLAY_ENTRY(type)                        \
struct {                                \
    struct type *spe_left; /* left element */            \
    struct type *spe_right; /* right element */            \
}

#define SPLAY_LEFT(elm, field)        (elm)->field.spe_left
#define SPLAY_RIGHT(elm, field)        (elm)->field.spe_right
#define SPLAY_ROOT(head)        (head)->sph_root
#define SPLAY_EMPTY(head)        (SPLAY_ROOT(head) == NULL)

/* SPLAY_ROTATE_{LEFT,RIGHT} expect that tmp hold SPLAY_{RIGHT,LEFT} */
#define SPLAY_ROTATE_RIGHT(head, tmp, field) do {            \
    SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(tmp, field);    \
    SPLAY_RIGHT(tmp, field) = (head)->sph_root;            \
    (head)->sph_root = tmp;                        \
} while (/*CONSTCOND*/ 0)
    
#define SPLAY_ROTATE_LEFT(head, tmp, field) do {            \
    SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(tmp, field);    \
    SPLAY_LEFT(tmp, field) = (head)->sph_root;            \
    (head)->sph_root = tmp;                        \
} while (/*CONSTCOND*/ 0)

#define SPLAY_LINKLEFT(head, tmp, field) do {                \
    SPLAY_LEFT(tmp, field) = (head)->sph_root;            \
    tmp = (head)->sph_root;                        \
    (head)->sph_root = SPLAY_LEFT((head)->sph_root, field);        \
} while (/*CONSTCOND*/ 0)

#define SPLAY_LINKRIGHT(head, tmp, field) do {                \
    SPLAY_RIGHT(tmp, field) = (head)->sph_root;            \
    tmp = (head)->sph_root;                        \
    (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field);    \
} while (/*CONSTCOND*/ 0)

#define SPLAY_ASSEMBLE(head, node, left, right, field) do {        \
    SPLAY_RIGHT(left, field) = SPLAY_LEFT((head)->sph_root, field);    \
    SPLAY_LEFT(right, field) = SPLAY_RIGHT((head)->sph_root, field);\
    SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(node, field);    \
    SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(node, field);    \
} while (/*CONSTCOND*/ 0)

/* Generates prototypes and inline functions */

#define SPLAY_PROTOTYPE(name, type, field, cmp)                \
void name##_SPLAY(struct name *, struct type *);            \
void name##_SPLAY_MINMAX(struct name *, int);                \
struct type *name##_SPLAY_INSERT(struct name *, struct type *);        \
struct type *name##_SPLAY_REMOVE(struct name *, struct type *);        \
                                    \
/* Finds the node with the same key as elm */                \
static __inline struct type *                        \
name##_SPLAY_FIND(struct name *head, struct type *elm)            \
{                                    \
    if (SPLAY_EMPTY(head))                        \
        return(NULL);                        \
    name##_SPLAY(head, elm);                    \
    if ((cmp)(elm, (head)->sph_root) == 0)                \
        return (head->sph_root);                \
    return (NULL);                            \
}                                    \
                                    \
static __inline struct type *                        \
name##_SPLAY_NEXT(struct name *head, struct type *elm)            \
{                                    \
    name##_SPLAY(head, elm);                    \
    if (SPLAY_RIGHT(elm, field) != NULL) {                \
        elm = SPLAY_RIGHT(elm, field);                \
        while (SPLAY_LEFT(elm, field) != NULL) {        \
            elm = SPLAY_LEFT(elm, field);            \
        }                            \
    } else                                \
        elm = NULL;                        \
    return (elm);                            \
}                                    \
                                    \
static __inline struct type *                        \
name##_SPLAY_MIN_MAX(struct name *head, int val)            \
{                                    \
    name##_SPLAY_MINMAX(head, val);                    \
        return (SPLAY_ROOT(head));                    \
}


[此贴子已经被作者于2017-7-6 23:32编辑过]

搜索更多相关主题的帖子: the struct head name field 
2017-07-06 23:31
renkejun1942
Rank: 14Rank: 14Rank: 14Rank: 14
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得分:0 
程序代码:
/* Main splay operation.

 * Moves node close to the key of elm to top

 */
#define SPLAY_GENERATE(name, type, field, cmp)                \
struct type *                                \
name##_SPLAY_INSERT(struct name *head, struct type *elm)        \
{                                    \
    if (SPLAY_EMPTY(head)) {                        \
        SPLAY_LEFT(elm, field) = SPLAY_RIGHT(elm, field) = NULL;    \
    } else {                                \
        int __comp;                            \
        name##_SPLAY(head, elm);                    \
        __comp = (cmp)(elm, (head)->sph_root);            \
        if(__comp < 0) {                        \
            SPLAY_LEFT(elm, field) = SPLAY_LEFT((head)->sph_root, field);\
            SPLAY_RIGHT(elm, field) = (head)->sph_root;        \
            SPLAY_LEFT((head)->sph_root, field) = NULL;        \
        } else if (__comp > 0) {                    \
            SPLAY_RIGHT(elm, field) = SPLAY_RIGHT((head)->sph_root, field);\
            SPLAY_LEFT(elm, field) = (head)->sph_root;        \
            SPLAY_RIGHT((head)->sph_root, field) = NULL;    \
        } else                            \
            return ((head)->sph_root);                \
    }                                    \
    (head)->sph_root = (elm);                        \
    return (NULL);                            \
}                                    \
                                    \
struct type *                                \
name##_SPLAY_REMOVE(struct name *head, struct type *elm)        \
{                                    \
    struct type *__tmp;                        \
    if (SPLAY_EMPTY(head))                        \
        return (NULL);                        \
    name##_SPLAY(head, elm);                    \
    if ((cmp)(elm, (head)->sph_root) == 0) {            \
        if (SPLAY_LEFT((head)->sph_root, field) == NULL) {    \
            (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field);\
        } else {                        \
            __tmp = SPLAY_RIGHT((head)->sph_root, field);    \
            (head)->sph_root = SPLAY_LEFT((head)->sph_root, field);\
            name##_SPLAY(head, elm);            \
            SPLAY_RIGHT((head)->sph_root, field) = __tmp;    \
        }                            \
        return (elm);                        \
    }                                \
    return (NULL);                            \
}                                    \
                                    \
void                                    \
name##_SPLAY(struct name *head, struct type *elm)            \
{                                    \
    struct type __node, *__left, *__right, *__tmp;            \
    int __comp;                            \
\
    SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\
    __left = __right = &__node;                    \
\
    while ((__comp = (cmp)(elm, (head)->sph_root)) != 0) {        \
        if (__comp < 0) {                    \
            __tmp = SPLAY_LEFT((head)->sph_root, field);    \
            if (__tmp == NULL)                \
                break;                    \
            if ((cmp)(elm, __tmp) < 0){            \
                SPLAY_ROTATE_RIGHT(head, __tmp, field);    \
                if (SPLAY_LEFT((head)->sph_root, field) == NULL)\
                    break;                \
            }                        \
            SPLAY_LINKLEFT(head, __right, field);        \
        } else if (__comp > 0) {                \
            __tmp = SPLAY_RIGHT((head)->sph_root, field);    \
            if (__tmp == NULL)                \
                break;                    \
            if ((cmp)(elm, __tmp) > 0){            \
                SPLAY_ROTATE_LEFT(head, __tmp, field);    \
                if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\
                    break;                \
            }                        \
            SPLAY_LINKRIGHT(head, __left, field);        \
        }                            \
    }                                \
    SPLAY_ASSEMBLE(head, &__node, __left, __right, field);        \
}                                    \
                                    \
/* Splay with either the minimum or the maximum element            \

 * Used to find minimum or maximum element in tree.            \

 */                                    \
void name##_SPLAY_MINMAX(struct name *head, int __comp) \
{                                    \
    struct type __node, *__left, *__right, *__tmp;            \
\
    SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\
    __left = __right = &__node;                    \
\
    while (1) {                            \
        if (__comp < 0) {                    \
            __tmp = SPLAY_LEFT((head)->sph_root, field);    \
            if (__tmp == NULL)                \
                break;                    \
            if (__comp < 0){                \
                SPLAY_ROTATE_RIGHT(head, __tmp, field);    \
                if (SPLAY_LEFT((head)->sph_root, field) == NULL)\
                    break;                \
            }                        \
            SPLAY_LINKLEFT(head, __right, field);        \
        } else if (__comp > 0) {                \
            __tmp = SPLAY_RIGHT((head)->sph_root, field);    \
            if (__tmp == NULL)                \
                break;                    \
            if (__comp > 0) {                \
                SPLAY_ROTATE_LEFT(head, __tmp, field);    \
                if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\
                    break;                \
            }                        \
            SPLAY_LINKRIGHT(head, __left, field);        \
        }                            \
    }                                \
    SPLAY_ASSEMBLE(head, &__node, __left, __right, field);        \
}

#define SPLAY_NEGINF    -1
#define SPLAY_INF    1

#define SPLAY_INSERT(name, x, y)    name##_SPLAY_INSERT(x, y)
#define SPLAY_REMOVE(name, x, y)    name##_SPLAY_REMOVE(x, y)
#define SPLAY_FIND(name, x, y)        name##_SPLAY_FIND(x, y)
#define SPLAY_NEXT(name, x, y)        name##_SPLAY_NEXT(x, y)
#define SPLAY_MIN(name, x)        (SPLAY_EMPTY(x) ? NULL    \
                    : name##_SPLAY_MIN_MAX(x, SPLAY_NEGINF))
#define SPLAY_MAX(name, x)        (SPLAY_EMPTY(x) ? NULL    \
                    : name##_SPLAY_MIN_MAX(x, SPLAY_INF))

#define SPLAY_FOREACH(x, name, head)                    \
    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 (/*CONSTCOND*/ 0)

#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 (/*CONSTCOND*/ 0)

#define RB_SET_BLACKRED(black, red, field) do {                \
    RB_COLOR(black, field) = RB_BLACK;                \
    RB_COLOR(red, field) = RB_RED;                    \
} while (/*CONSTCOND*/ 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)) != NULL) {    \
        RB_PARENT(RB_LEFT(tmp, field), field) = (elm);        \
    }                                \
    RB_AUGMENT(elm);                        \
    if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) {    \
        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 (/*CONSTCOND*/ 0)

#define RB_ROTATE_RIGHT(head, elm, tmp, field) do {            \
    (tmp) = RB_LEFT(elm, field);                    \
    if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field)) != NULL) {    \
        RB_PARENT(RB_RIGHT(tmp, field), field) = (elm);        \
    }                                \
    RB_AUGMENT(elm);                        \
    if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) {    \
        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 (/*CONSTCOND*/ 0)

/* 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, __unused static)
#define RB_PROTOTYPE_INTERNAL(name, type, field, cmp, attr)        \
    RB_PROTOTYPE_INSERT_COLOR(name, type, attr);            \
    RB_PROTOTYPE_REMOVE_COLOR(name, type, attr);            \
    RB_PROTOTYPE_INSERT(name, type, attr);                \
    RB_PROTOTYPE_REMOVE(name, type, attr);                \
    RB_PROTOTYPE_FIND(name, type, attr);                \
    RB_PROTOTYPE_NFIND(name, type, attr);                \
    RB_PROTOTYPE_NEXT(name, type, attr);                \
    RB_PROTOTYPE_PREV(name, type, attr);                \
    RB_PROTOTYPE_MINMAX(name, type, attr);
#define RB_PROTOTYPE_INSERT_COLOR(name, type, attr)            \
    attr void name##_RB_INSERT_COLOR(struct name *, struct type *)
#define RB_PROTOTYPE_REMOVE_COLOR(name, type, attr)            \
    attr void name##_RB_REMOVE_COLOR(struct name *, struct type *, struct type *)
#define RB_PROTOTYPE_REMOVE(name, type, attr)                \
    attr struct type *name##_RB_REMOVE(struct name *, struct type *)
#define RB_PROTOTYPE_INSERT(name, type, attr)                \
    attr struct type *name##_RB_INSERT(struct name *, struct type *)
#define RB_PROTOTYPE_FIND(name, type, attr)                \
    attr struct type *name##_RB_FIND(struct name *, struct type *)
#define RB_PROTOTYPE_NFIND(name, type, attr)                \
    attr struct type *name##_RB_NFIND(struct name *, struct type *)
#define RB_PROTOTYPE_NEXT(name, type, attr)                \
    attr struct type *name##_RB_NEXT(struct type *)
#define RB_PROTOTYPE_PREV(name, type, attr)                \
    attr struct type *name##_RB_PREV(struct type *)
#define RB_PROTOTYPE_MINMAX(name, type, attr)                \
    attr struct type *name##_RB_MINMAX(struct name *, int)

09:30 05/21 种下琵琶种子,能种活么?等待中……
21:50 05/27 没有发芽。
20:51 05/28 没有发芽。
23:03 05/29 没有发芽。
23:30 06/09 我有预感,要发芽了。
2017-07-06 23:31
renkejun1942
Rank: 14Rank: 14Rank: 14Rank: 14
来 自:不是这样
等 级:贵宾
威 望:33
帖 子:1645
专家分:5297
注 册:2016-12-1
收藏
得分:0 
程序代码:
/* 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, __unused static)
#define RB_GENERATE_INTERNAL(name, type, field, cmp, attr)        \
    RB_GENERATE_INSERT_COLOR(name, type, field, attr)        \
    RB_GENERATE_REMOVE_COLOR(name, type, field, attr)        \
    RB_GENERATE_INSERT(name, type, field, cmp, attr)        \
    RB_GENERATE_REMOVE(name, type, field, attr)            \
    RB_GENERATE_FIND(name, type, field, cmp, attr)            \
    RB_GENERATE_NFIND(name, type, field, cmp, attr)            \
    RB_GENERATE_NEXT(name, type, field, attr)            \
    RB_GENERATE_PREV(name, type, field, attr)            \
    RB_GENERATE_MINMAX(name, type, field, attr)

#define RB_GENERATE_INSERT_COLOR(name, type, field, attr)        \
attr void                                \
name##_RB_INSERT_COLOR(struct name *head, struct type *elm)        \
{                                    \
    struct type *parent, *gparent, *tmp;                \
    while ((parent = RB_PARENT(elm, field)) != NULL &&        \
        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;            \
}

#define RB_GENERATE_REMOVE_COLOR(name, type, field, attr)        \
attr void                                \
name##_RB_REMOVE_COLOR(struct name *head, struct type *parent, 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)) \
                        != NULL)            \
                        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)) \
                        != NULL)            \
                        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;            \
}

#define RB_GENERATE_REMOVE(name, type, field, attr)            \
attr 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)) != NULL)        \
            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)) != NULL); \
        }                            \
        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);                            \
}                                    \

#define RB_GENERATE_INSERT(name, type, field, cmp, attr)        \
/* Inserts a node into the RB tree */                    \
attr struct type *                            \
name##_RB_INSERT(struct name *head, struct type *elm)            \
{                                    \
    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);                            \
}

#define RB_GENERATE_FIND(name, type, field, cmp, attr)            \
/* Finds the node with the same key as elm */                \
attr struct type *                            \
name##_RB_FIND(struct name *head, struct type *elm)            \
{                                    \
    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);                            \
}

#define RB_GENERATE_NFIND(name, type, field, cmp, attr)            \
/* Finds the first node greater than or equal to the search key */    \
attr struct type *                            \
name##_RB_NFIND(struct name *head, struct type *elm)            \
{                                    \
    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);                            \
}

#define RB_GENERATE_NEXT(name, type, field, attr)            \
/* ARGSUSED */                                \
attr struct type *                            \
name##_RB_NEXT(struct type *elm)                    \
{                                    \
    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);                            \
}

#define RB_GENERATE_PREV(name, type, field, attr)            \
/* ARGSUSED */                                \
attr struct type *                            \
name##_RB_PREV(struct type *elm)                    \
{                                    \
    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);                            \
}

#define RB_GENERATE_MINMAX(name, type, field, attr)            \
attr struct type *                            \
name##_RB_MINMAX(struct name *head, int val)                \
{                                    \
    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);                        \
}

#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_FROM(x, name, y)                    \
    for ((x) = (y);                            \
        ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL);    \
         (x) = (y))

#define RB_FOREACH_SAFE(x, name, head, y)                \
    for ((x) = RB_MIN(name, head);                    \
        ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL);    \
         (x) = (y))

#define RB_FOREACH_REVERSE(x, name, head)                \
    for ((x) = RB_MAX(name, head);                    \
         (x) != NULL;                        \
         (x) = name##_RB_PREV(x))

#define RB_FOREACH_REVERSE_FROM(x, name, y)                \
    for ((x) = (y);                            \
        ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL);    \
         (x) = (y))

#define RB_FOREACH_REVERSE_SAFE(x, name, head, y)            \
    for ((x) = RB_MAX(name, head);                    \
        ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL);    \
         (x) = (y))

#endif    /* _SYS_TREE_H_ */

09:30 05/21 种下琵琶种子,能种活么?等待中……
21:50 05/27 没有发芽。
20:51 05/28 没有发芽。
23:03 05/29 没有发芽。
23:30 06/09 我有预感,要发芽了。
2017-07-06 23:32
九转星河
Rank: 19Rank: 19Rank: 19Rank: 19Rank: 19Rank: 19
来 自:长长久久
等 级:贵宾
威 望:52
帖 子:5023
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注 册:2016-10-22
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好像挺方便的样子~可以参考一下~

[code]/*~个性签名:bug是什么意思?bug是看上去没有可能的东西实际上是有可能做到的 就是这样~2018-08-08更~*/[/code]
2017-07-06 23:42
wp231957
Rank: 20Rank: 20Rank: 20Rank: 20Rank: 20
来 自:神界
等 级:贵宾
威 望:423
帖 子:13688
专家分:53332
注 册:2012-10-18
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咋那么多续行符

DO IT YOURSELF !
2017-07-07 16:15
renkejun1942
Rank: 14Rank: 14Rank: 14Rank: 14
来 自:不是这样
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回复 5楼 wp231957
因为都是宏。

09:30 05/21 种下琵琶种子,能种活么?等待中……
21:50 05/27 没有发芽。
20:51 05/28 没有发芽。
23:03 05/29 没有发芽。
23:30 06/09 我有预感,要发芽了。
2017-07-07 18:13
夏日时光
Rank: 1
等 级:新手上路
帖 子:1
专家分:0
注 册:2017-7-9
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得分:0 
2017-07-09 14:31
psy134820
Rank: 1
等 级:新手上路
帖 子:19
专家分:7
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为啥没有报错也打不开?
2017-07-09 15:36
九转星河
Rank: 19Rank: 19Rank: 19Rank: 19Rank: 19Rank: 19
来 自:长长久久
等 级:贵宾
威 望:52
帖 子:5023
专家分:14003
注 册:2016-10-22
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得分:0 
回复 8楼 psy134820
看来这个基础要求还是高了一些~现阶段运行不了可以先放放……~

感觉楼主如果能补充个使用示例或者附上具体调用方法就更完善了……~

[code]/*~个性签名:bug是什么意思?bug是看上去没有可能的东西实际上是有可能做到的 就是这样~2018-08-08更~*/[/code]
2017-07-09 18:22
九转星河
Rank: 19Rank: 19Rank: 19Rank: 19Rank: 19Rank: 19
来 自:长长久久
等 级:贵宾
威 望:52
帖 子:5023
专家分:14003
注 册:2016-10-22
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回复 8楼 psy134820
没有报错也打不开看看是不是少了个具体的实现方法?~基础一点说说那个是头文件哦~

[code]/*~个性签名:bug是什么意思?bug是看上去没有可能的东西实际上是有可能做到的 就是这样~2018-08-08更~*/[/code]
2017-07-09 18:24
快速回复:NetBSD的红黑树实现
数据加载中...
 
   



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