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- (djm) [openbsd-compat/sys-tree.h] Sync with OpenBSD. krl.c needs newer 

version.
This commit is contained in:
Damien Miller 2013-01-20 22:49:58 +11:00
parent a7522d9fc0
commit d60b210830
3 changed files with 94 additions and 21 deletions
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2
ChangeLog
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@ -24,6 +24,8 @@
- markus@cvs.openbsd.org 2013/01/19 12:34:55
[krl.c]
RB_INSERT does not remove existing elments; ok djm@
- (djm) [openbsd-compat/sys-tree.h] Sync with OpenBSD. krl.c needs newer
version.
20130118
- (djm) OpenBSD CVS Sync

4
krl.c
View File

@ -20,8 +20,8 @@
#include <sys/types.h>
#include <sys/param.h>
#include <sys/tree.h>
#include <sys/queue.h>
#include <openbsd-compat/sys-tree.h>
#include <openbsd-compat/sys-queue.h>
#include <errno.h>
#include <fcntl.h>

109
openbsd-compat/sys-tree.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: tree.h,v 1.10 2007/10/29 23:49:41 djm Exp $ */
/* $OpenBSD: tree.h,v 1.13 2011/07/09 00:19:45 pirofti Exp $ */
/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
* All rights reserved.
@ -331,7 +331,7 @@ struct { \
} while (0)
#ifndef RB_AUGMENT
#define RB_AUGMENT(x)
#define RB_AUGMENT(x) do {} while (0)
#endif
#define RB_ROTATE_LEFT(head, elm, tmp, field) do { \
@ -375,21 +375,31 @@ struct { \
} while (0)
/* Generates prototypes and inline functions */
#define RB_PROTOTYPE(name, type, field, cmp) \
void name##_RB_INSERT_COLOR(struct name *, struct type *); \
void name##_RB_REMOVE_COLOR(struct name *, struct type *, struct type *);\
struct type *name##_RB_REMOVE(struct name *, struct type *); \
struct type *name##_RB_INSERT(struct name *, struct type *); \
struct type *name##_RB_FIND(struct name *, struct type *); \
struct type *name##_RB_NEXT(struct type *); \
struct type *name##_RB_MINMAX(struct name *, int);
#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) \
void \
#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) \
{ \
struct type *parent, *gparent, *tmp; \
@ -433,7 +443,7 @@ name##_RB_INSERT_COLOR(struct name *head, struct type *elm) \
RB_COLOR(head->rbh_root, field) = RB_BLACK; \
} \
\
void \
attr void \
name##_RB_REMOVE_COLOR(struct name *head, struct type *parent, struct type *elm) \
{ \
struct type *tmp; \
@ -509,7 +519,7 @@ name##_RB_REMOVE_COLOR(struct name *head, struct type *parent, struct type *elm)
RB_COLOR(elm, field) = RB_BLACK; \
} \
\
struct type * \
attr struct type * \
name##_RB_REMOVE(struct name *head, struct type *elm) \
{ \
struct type *child, *parent, *old = elm; \
@ -577,7 +587,7 @@ color: \
} \
\
/* Inserts a node into the RB tree */ \
struct type * \
attr struct type * \
name##_RB_INSERT(struct name *head, struct type *elm) \
{ \
struct type *tmp; \
@ -608,7 +618,7 @@ name##_RB_INSERT(struct name *head, struct type *elm) \
} \
\
/* Finds the node with the same key as elm */ \
struct type * \
attr struct type * \
name##_RB_FIND(struct name *head, struct type *elm) \
{ \
struct type *tmp = RB_ROOT(head); \
@ -625,7 +635,29 @@ name##_RB_FIND(struct name *head, struct type *elm) \
return (NULL); \
} \
\
struct type * \
/* 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); \
} \
\
/* ARGSUSED */ \
attr struct type * \
name##_RB_NEXT(struct type *elm) \
{ \
if (RB_RIGHT(elm, field)) { \
@ -646,7 +678,29 @@ name##_RB_NEXT(struct type *elm) \
return (elm); \
} \
\
struct type * \
/* 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); \
} \
\
attr struct type * \
name##_RB_MINMAX(struct name *head, int val) \
{ \
struct type *tmp = RB_ROOT(head); \
@ -667,7 +721,9 @@ name##_RB_MINMAX(struct name *head, int val) \
#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)
@ -676,4 +732,19 @@ name##_RB_MINMAX(struct name *head, int val) \
(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_FOREACH_REVERSE_SAFE(x, name, head, y) \
for ((x) = RB_MAX(name, head); \
((x) != NULL) && ((y) = name##_RB_PREV(x), 1); \
(x) = (y))
#endif /* _SYS_TREE_H_ */