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Provide individual prototype and generate macros for the red-black tree.

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This helps to reduce code size in statically linked applications.

Submitted by:	Sebastian Huber <sebastian.huber@embedded-brains.de>
MFC after:	2 weeks
This commit is contained in:
Konstantin Belousov 2015-01-24 12:43:36 +00:00
parent f43f9c89f2
commit 51782e3a89
2 changed files with 131 additions and 26 deletions
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71
share/man/man3/tree.3
View File

@ -30,7 +30,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd November 10, 2013
.Dd January 24, 2015
.Dt TREE 3
.Os
.Sh NAME
@ -53,8 +53,26 @@
.Nm SPLAY_REMOVE ,
.Nm RB_PROTOTYPE ,
.Nm RB_PROTOTYPE_STATIC ,
.Nm RB_PROTOTYPE_INSERT ,
.Nm RB_PROTOTYPE_INSERT_COLOR ,
.Nm RB_PROTOTYPE_REMOVE ,
.Nm RB_PROTOTYPE_REMOVE_COLOR ,
.Nm RB_PROTOTYPE_FIND ,
.Nm RB_PROTOTYPE_NFIND ,
.Nm RB_PROTOTYPE_NEXT ,
.Nm RB_PROTOTYPE_PREV ,
.Nm RB_PROTOTYPE_MINMAX ,
.Nm RB_GENERATE ,
.Nm RB_GENERATE_STATIC ,
.Nm RB_GENERATE_INSERT ,
.Nm RB_GENERATE_INSERT_COLOR ,
.Nm RB_GENERATE_REMOVE ,
.Nm RB_GENERATE_REMOVE_COLOR ,
.Nm RB_GENERATE_FIND ,
.Nm RB_GENERATE_NFIND ,
.Nm RB_GENERATE_NEXT ,
.Nm RB_GENERATE_PREV ,
.Nm RB_GENERATE_MINMAX ,
.Nm RB_ENTRY ,
.Nm RB_HEAD ,
.Nm RB_INITIALIZER ,
@ -111,8 +129,26 @@
.Fn SPLAY_REMOVE NAME "SPLAY_HEAD *head" "struct TYPE *elm"
.Fn RB_PROTOTYPE NAME TYPE FIELD CMP
.Fn RB_PROTOTYPE_STATIC NAME TYPE FIELD CMP
.Fn RB_PROTOTYPE_INSERT NAME TYPE ATTR
.Fn RB_PROTOTYPE_INSERT_COLOR NAME TYPE ATTR
.Fn RB_PROTOTYPE_REMOVE NAME TYPE ATTR
.Fn RB_PROTOTYPE_REMOVE_COLOR NAME TYPE ATTR
.Fn RB_PROTOTYPE_FIND NAME TYPE ATTR
.Fn RB_PROTOTYPE_NFIND NAME TYPE ATTR
.Fn RB_PROTOTYPE_NEXT NAME TYPE ATTR
.Fn RB_PROTOTYPE_PREV NAME TYPE ATTR
.Fn RB_PROTOTYPE_MINMAX NAME TYPE ATTR
.Fn RB_GENERATE NAME TYPE FIELD CMP
.Fn RB_GENERATE_STATIC NAME TYPE FIELD CMP
.Fn RB_GENERATE_INSERT NAME TYPE FIELD CMP ATTR
.Fn RB_GENERATE_INSERT_COLOR NAME TYPE FIELD ATTR
.Fn RB_GENERATE_REMOVE NAME TYPE FIELD ATTR
.Fn RB_GENERATE_REMOVE_COLOR NAME TYPE FIELD ATTR
.Fn RB_GENERATE_FIND NAME TYPE FIELD CMP ATTR
.Fn RB_GENERATE_NFIND NAME TYPE FIELD CMP ATTR
.Fn RB_GENERATE_NEXT NAME TYPE FIELD ATTR
.Fn RB_GENERATE_PREV NAME TYPE FIELD ATTR
.Fn RB_GENERATE_MINMAX NAME TYPE FIELD ATTR
.Fn RB_ENTRY TYPE
.Fn RB_HEAD HEADNAME TYPE
.Fn RB_INITIALIZER "RB_HEAD *head"
@ -377,6 +413,27 @@ The
.Fa FIELD
argument is the name of the element defined by
.Fn RB_ENTRY .
Individual prototypes can be declared with
.Fn RB_PROTOTYPE_INSERT ,
.Fn RB_PROTOTYPE_INSERT_COLOR ,
.Fn RB_PROTOTYPE_REMOVE ,
.Fn RB_PROTOTYPE_REMOVE_COLOR ,
.Fn RB_PROTOTYPE_FIND ,
.Fn RB_PROTOTYPE_NFIND ,
.Fn RB_PROTOTYPE_NEXT ,
.Fn RB_PROTOTYPE_PREV ,
and
.Fn RB_PROTOTYPE_MINMAX
in case not all functions are required. The individual prototype macros expect
.Fa NAME ,
.Fa TYPE ,
and
.Fa ATTR
arguments. The
.Fa ATTR
argument must be empty for global functions or
.Fa static
for static functions.
.Pp
The function bodies are generated with the
.Fn RB_GENERATE
@ -388,6 +445,18 @@ These macros take the same arguments as the
and
.Fn RB_PROTOTYPE_STATIC
macros, but should be used only once.
As an alternative individual function bodies are generated with the
.Fn RB_GENERATE_INSERT ,
.Fn RB_GENERATE_INSERT_COLOR ,
.Fn RB_GENERATE_REMOVE ,
.Fn RB_GENERATE_REMOVE_COLOR ,
.Fn RB_GENERATE_FIND ,
.Fn RB_GENERATE_NFIND ,
.Fn RB_GENERATE_NEXT ,
.Fn RB_GENERATE_PREV ,
and
.Fn RB_GENERATE_MINMAX
macros.
.Pp
Finally,
the

86
sys/sys/tree.h
View File

@ -383,16 +383,33 @@ struct { \
#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) \
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); \
\
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)
/* Main rb operation.
* Moves node close to the key of elm to top
@ -402,6 +419,17 @@ attr struct type *name##_RB_MINMAX(struct name *, int); \
#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) \
{ \
@ -444,8 +472,9 @@ name##_RB_INSERT_COLOR(struct name *head, struct type *elm) \
} \
} \
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) \
{ \
@ -522,8 +551,9 @@ name##_RB_REMOVE_COLOR(struct name *head, struct type *parent, struct type *elm)
} \
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) \
{ \
@ -590,7 +620,8 @@ color: \
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) \
@ -620,8 +651,9 @@ name##_RB_INSERT(struct name *head, struct type *elm) \
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) \
@ -638,8 +670,9 @@ name##_RB_FIND(struct name *head, struct type *elm) \
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) \
@ -659,8 +692,9 @@ name##_RB_NFIND(struct name *head, struct type *elm) \
return (tmp); \
} \
return (res); \
} \
\
}
#define RB_GENERATE_NEXT(name, type, field, attr) \
/* ARGSUSED */ \
attr struct type * \
name##_RB_NEXT(struct type *elm) \
@ -681,8 +715,9 @@ name##_RB_NEXT(struct type *elm) \
} \
} \
return (elm); \
} \
\
}
#define RB_GENERATE_PREV(name, type, field, attr) \
/* ARGSUSED */ \
attr struct type * \
name##_RB_PREV(struct type *elm) \
@ -703,8 +738,9 @@ name##_RB_PREV(struct type *elm) \
} \
} \
return (elm); \
} \
\
}
#define RB_GENERATE_MINMAX(name, type, field, attr) \
attr struct type * \
name##_RB_MINMAX(struct name *head, int val) \
{ \