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util: Add Intrusive List/RBTree

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This commit is contained in:
Michael Scire 2019-07-16 23:06:12 -07:00
parent a4a3ebed50
commit d0adebfb27
7 changed files with 1801 additions and 55 deletions
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812
include/freebsd/sys/tree.h Normal file
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/* $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_
/* FreeBSD <sys/cdefs.h> has a lot of defines we don't really want. */
/* tree.h only actually uses __inline and __unused, so we'll just define those. */
/* #include <sys/cdefs.h> */
#ifndef __inline
#define __inline inline
#endif
#ifndef __unused
#define __unused __attribute__((__unused__))
#endif
/*
* 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)); \
}
/* 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)
/* 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_ */

53
include/meta_tools.hpp
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@ -1,53 +0,0 @@
/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <functional>
namespace detail {
template<typename T>
struct class_of;
template<typename Ret, typename C>
struct class_of<Ret C::*> {
using type = C;
};
template<typename T>
using class_of_t = typename class_of<T>::type;
template<typename Mem, typename T, typename C = class_of_t<Mem>>
struct member_equals_fn_helper {
T ref;
Mem mem_fn;
bool operator()(const C& val) const {
return (std::mem_fn(mem_fn)(val) == ref);
}
bool operator()(C&& val) const {
return (std::mem_fn(mem_fn)(std::move(val)) == ref);
}
};
} // namespace detail
template<typename Mem, typename T>
auto member_equals_fn(Mem mem, T ref) {
return detail::member_equals_fn_helper<Mem, T>{std::move(ref), std::move(mem)};
}

2
include/stratosphere/util.hpp
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@ -19,3 +19,5 @@
#include "util/util_compression.hpp"
#include "util/util_ini.hpp"
#include "util/util_intrusive_list.hpp"
#include "util/util_intrusive_red_black_tree.hpp"

607
include/stratosphere/util/util_intrusive_list.hpp Normal file
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@ -0,0 +1,607 @@
/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <iterator>
#include <switch.h>
#include "../defines.hpp"
#include "util_parent_of_member.hpp"
namespace sts::util {
/* Forward declare implementation class for Node. */
namespace impl {
class IntrusiveListImpl;
}
class IntrusiveListNode {
NON_COPYABLE(IntrusiveListNode);
private:
friend class impl::IntrusiveListImpl;
IntrusiveListNode *prev;
IntrusiveListNode *next;
public:
IntrusiveListNode() {
this->prev = this;
this->next = this;
}
bool IsLinked() const {
return this->next != this;
}
private:
void LinkPrev(IntrusiveListNode *node) {
/* We can't link an already linked node. */
if (node->IsLinked()) {
std::abort();
}
return this->SplicePrev(node, node);
}
void SplicePrev(IntrusiveListNode *first, IntrusiveListNode *last) {
/* Splice a range into the list. */
auto last_prev = last->prev;
first->prev = this->prev;
this->prev->next = first;
last_prev->next = this;
this->prev = last_prev;
}
void LinkNext(IntrusiveListNode *node) {
/* We can't link an already linked node. */
if (node->IsLinked()) {
std::abort();
}
return this->SpliceNext(node, node);
}
void SpliceNext(IntrusiveListNode *first, IntrusiveListNode *last) {
/* Splice a range into the list. */
auto last_prev = last->prev;
first->prev = this;
this->next = first;
last_prev->next = next;
this->next->prev = last_prev;
}
void Unlink() {
this->Unlink(this->next);
}
void Unlink(IntrusiveListNode *last) {
/* Unlink a node from a next node. */
auto last_prev = last->prev;
this->prev->next = last;
last->prev = this->prev;
last_prev->next = this;
this->prev = last_prev;
}
IntrusiveListNode *GetPrev() {
return this->prev;
}
const IntrusiveListNode *GetPrev() const {
return this->prev;
}
IntrusiveListNode *GetNext() {
return this->prev;
}
const IntrusiveListNode *GetNext() const {
return this->prev;
}
};
namespace impl {
class IntrusiveListImpl {
NON_COPYABLE(IntrusiveListImpl);
private:
IntrusiveListNode root_node;
public:
template<bool Const>
class Iterator;
using value_type = IntrusiveListNode;
using size_type = size_t;
using difference_type = ptrdiff_t;
using pointer = value_type *;
using const_pointer = const value_type *;
using reference = value_type &;
using const_reference = const value_type &;
using iterator = Iterator<false>;
using const_iterator = Iterator<true>;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
template<bool Const>
class Iterator {
public:
using iterator_category = std::bidirectional_iterator_tag;
using value_type = typename IntrusiveListImpl::value_type;
using difference_type = typename IntrusiveListImpl::difference_type;
using pointer = typename std::conditional<Const, IntrusiveListImpl::const_pointer, IntrusiveListImpl::pointer>::type;
using reference = typename std::conditional<Const, IntrusiveListImpl::const_reference, IntrusiveListImpl::reference>::type;
private:
pointer node;
public:
explicit Iterator(pointer n) : node(n) { /* ... */ }
bool operator==(const Iterator &rhs) const {
return this->node == rhs.node;
}
bool operator!=(const Iterator &rhs) const {
return !(*this == rhs);
}
pointer operator->() const {
return this->node;
}
reference operator*() const {
return *this->node;
}
Iterator &operator++() {
this->node = this->node->next;
return *this;
}
Iterator &operator--() {
this->node = this->node->prev;
return *this;
}
Iterator operator++(int) {
const Iterator it{*this};
++(*this);
return it;
}
Iterator operator--(int) {
const Iterator it{*this};
--(*this);
return it;
}
operator Iterator<true>() const {
return Iterator<true>(this->node);
}
Iterator<false> GetNonConstIterator() const {
return Iterator<false>(const_cast<IntrusiveListImpl::pointer>(this->node));
}
};
public:
IntrusiveListImpl() : root_node() { /* ... */ }
/* Iterator accessors. */
iterator begin() {
return iterator(this->root_node.GetNext());
}
const_iterator begin() const {
return const_iterator(this->root_node.GetNext());
}
iterator end() {
return iterator(&this->root_node);
}
const_iterator end() const {
return const_iterator(&this->root_node);
}
iterator iterator_to(reference v) {
/* Only allow iterator_to for values in lists. */
if (!v.IsLinked()) {
std::abort();
}
return iterator(&v);
}
const_iterator iterator_to(const_reference v) const {
/* Only allow iterator_to for values in lists. */
if (!v.IsLinked()) {
std::abort();
}
return const_iterator(&v);
}
/* Content management. */
bool empty() const {
return !this->root_node.IsLinked();
}
size_type size() const {
return static_cast<size_type>(std::distance(this->begin(), this->end()));
}
reference back() {
return *this->root_node.GetPrev();
}
const_reference back() const {
return *this->root_node.GetPrev();
}
reference front() {
return *this->root_node.GetNext();
}
const_reference front() const {
return *this->root_node.GetNext();
}
void push_back(reference node) {
this->root_node.LinkPrev(&node);
}
void push_front(reference node) {
this->root_node.LinkNext(&node);
}
void pop_back() {
this->root_node.GetPrev()->Unlink();
}
void pop_front() {
this->root_node.GetNext()->Unlink();
}
iterator insert(const_iterator pos, reference node) {
pos.GetNonConstIterator()->LinkPrev(&node);
return iterator(&node);
}
void splice(const_iterator pos, IntrusiveListImpl &o) {
splice_impl(pos, o.begin(), o.end());
}
void splice(const_iterator pos, IntrusiveListImpl &o, const_iterator first) {
const_iterator last(first);
std::advance(last, 1);
splice_impl(pos, first, last);
}
void splice(const_iterator pos, IntrusiveListImpl &o, const_iterator first, const_iterator last) {
splice_impl(pos, first, last);
}
iterator erase(const iterator pos) {
if (pos == this->end()) {
return this->end();
}
iterator it(pos.GetNonConstIterator());
(it++)->Unlink();
return it;
}
void clear() {
while (!this->empty()) {
this->pop_front();
}
}
private:
void splice_impl(const_iterator _pos, const_iterator _first, const_iterator _last) {
if (_first == _last) {
return;
}
iterator pos(_pos.GetNonConstIterator());
iterator first(_first.GetNonConstIterator());
iterator last(_last.GetNonConstIterator());
first->Unlink(&*last);
pos->SplicePrev(&*first, &*last);
}
};
}
template<class T, class Traits>
class IntrusiveList {
NON_COPYABLE(IntrusiveList);
private:
impl::IntrusiveListImpl impl;
public:
template<bool Const>
class Iterator;
using value_type = T;
using size_type = size_t;
using difference_type = ptrdiff_t;
using pointer = value_type *;
using const_pointer = const value_type *;
using reference = value_type &;
using const_reference = const value_type &;
using iterator = Iterator<false>;
using const_iterator = Iterator<true>;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
template<bool Const>
class Iterator {
public:
friend class sts::util::IntrusiveList<T, Traits>;
using ImplIterator = typename std::conditional<Const, sts::util::impl::IntrusiveListImpl::const_iterator, sts::util::impl::IntrusiveListImpl::iterator>::type;
using iterator_category = std::bidirectional_iterator_tag;
using value_type = typename IntrusiveList::value_type;
using difference_type = typename IntrusiveList::difference_type;
using pointer = typename std::conditional<Const, IntrusiveList::const_pointer, IntrusiveList::pointer>::type;
using reference = typename std::conditional<Const, IntrusiveList::const_reference, IntrusiveList::reference>::type;
private:
ImplIterator iterator;
private:
explicit Iterator(ImplIterator it) : iterator(it) { /* ... */ }
ImplIterator GetImplIterator() const {
return this->iterator;
}
public:
bool operator==(const Iterator &rhs) const {
return this->iterator == rhs.iterator;
}
bool operator!=(const Iterator &rhs) const {
return !(*this == rhs);
}
pointer operator->() const {
return &Traits::GetParent(*this->iterator);
}
reference operator*() const {
return Traits::GetParent(*this->iterator);
}
Iterator &operator++() {
++this->iterator;
return *this;
}
Iterator &operator--() {
--this->iterator;
return *this;
}
Iterator operator++(int) {
const Iterator it{*this};
++this->iterator;
return it;
}
Iterator operator--(int) {
const Iterator it{*this};
--this->iterator;
return it;
}
operator Iterator<true>() const {
return Iterator<true>(this->iterator);
}
};
private:
static constexpr IntrusiveListNode &GetNode(reference ref) {
return Traits::GetNode(ref);
}
static constexpr IntrusiveListNode const &GetNode(const_reference ref) {
return Traits::GetNode(ref);
}
static constexpr reference GetParent(IntrusiveListNode &node) {
return Traits::GetParent(node);
}
static constexpr const_reference GetParent(IntrusiveListNode const &node) {
return Traits::GetParent(node);
}
public:
IntrusiveList() : impl() { /* ... */ }
/* Iterator accessors. */
iterator begin() {
return iterator(this->impl.begin());
}
const_iterator begin() const {
return const_iterator(this->impl.begin());
}
iterator end() {
return iterator(this->impl.end());
}
const_iterator end() const {
return const_iterator(this->impl.end());
}
const_iterator cbegin() const {
return this->begin();
}
const_iterator cend() const {
return this->end();
}
reverse_iterator rbegin() {
return reverse_iterator(this->end());
}
const_reverse_iterator rbegin() const {
return const_reverse_iterator(this->end());
}
reverse_iterator rend() {
return reverse_iterator(this->begin());
}
const_reverse_iterator rend() const {
return const_reverse_iterator(this->begin());
}
const_reverse_iterator crbegin() const {
return this->rbegin();
}
const_reverse_iterator crend() const {
return this->rend();
}
iterator iterator_to(reference v) {
return iterator(this->impl.iterator_to(GetNode(v)));
}
const_iterator iterator_to(const_reference v) const {
return const_iterator(this->impl.iterator_to(GetNode(v)));
}
/* Content management. */
bool empty() const {
return this->impl.empty();
}
size_type size() const {
return this->impl.size();
}
reference back() {
if (this->impl.empty()) { std::abort(); }
return this->impl.back();
}
const_reference back() const {
if (this->impl.empty()) { std::abort(); }
return this->impl.back();
}
reference front() {
if (this->impl.empty()) { std::abort(); }
return this->impl.front();
}
const_reference front() const {
if (this->impl.empty()) { std::abort(); }
return this->impl.front();
}
void push_back(reference ref) {
this->impl.push_back(GetNode(ref));
}
void push_front(reference ref) {
this->impl.push_back(GetNode(ref));
}
void pop_back() {
if (this->impl.empty()) { std::abort(); }
return this->impl.pop_back();
}
void pop_front() {
if (this->impl.empty()) { std::abort(); }
return this->impl.pop_front();
}
iterator insert(const_iterator pos, reference ref) {
return iterator(this->impl.insert(pos.GetImplIterator(), GetNode(ref)));
}
void splice(const_iterator pos, IntrusiveList &o) {
this->impl.splice(pos.GetImplIterator(), o.impl);
}
void splice(const_iterator pos, IntrusiveList &o, const_iterator first) {
this->impl.splice(pos.GetImplIterator(), o.impl, first.GetImplIterator());
}
void splice(const_iterator pos, IntrusiveList &o, const_iterator first, const_iterator last) {
this->impl.splice(pos.GetImplIterator(), o.impl, first.GetImplIterator(), last.GetImplIterator());
}
iterator erase(const iterator pos) {
return iterator(this->impl.erase(pos.GetImplIterator()));
}
void clear() {
this->impl.clear();
}
};
template<auto T, class Derived = util::impl::GetParentType<T>>
class IntrusiveListMemberTraits;
template<class Parent, IntrusiveListNode Parent::*Member, class Derived>
class IntrusiveListMemberTraits<Member, Derived> {
public:
using ListType = IntrusiveList<Derived, IntrusiveListMemberTraits>;
private:
friend class IntrusiveList<Derived, IntrusiveListMemberTraits>;
static constexpr IntrusiveListNode &GetNode(Derived &parent) {
return parent.*Member;
}
static constexpr IntrusiveListNode const &GetNode(Derived const &parent) {
return parent.*Member;
}
static constexpr Derived &GetParent(IntrusiveListNode &node) {
return static_cast<Derived &>(util::GetParentReference<Member>(&node));
}
static constexpr Derived const &GetParent(IntrusiveListNode const &node) {
return static_cast<const Derived &>(util::GetParentReference<Member>(&node));
}
};
template<class Derived>
class IntrusiveListBaseNode : public IntrusiveListNode{};
template<class Derived>
class IntrusiveListBaseTraits {
public:
using ListType = IntrusiveList<Derived, IntrusiveListBaseTraits>;
private:
friend class IntrusiveList<Derived, IntrusiveListBaseTraits>;
static constexpr IntrusiveListNode &GetNode(Derived &parent) {
return static_cast<IntrusiveListNode &>(parent);
}
static constexpr IntrusiveListNode const &GetNode(Derived const &parent) {
return static_cast<const IntrusiveListNode &>(parent);
}
static constexpr Derived &GetParent(IntrusiveListNode &node) {
return static_cast<Derived &>(node);
}
static constexpr Derived const &GetParent(IntrusiveListNode const &node) {
return static_cast<const Derived &>(node);
}
};
}

301
include/stratosphere/util/util_intrusive_red_black_tree.hpp Normal file
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@ -0,0 +1,301 @@
/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <freebsd/sys/tree.h>
#include <iterator>
#include <switch.h>
#include "../defines.hpp"
#include "util_parent_of_member.hpp"
namespace sts::util {
struct IntrusiveRedBlackTreeNode {
NON_COPYABLE(IntrusiveRedBlackTreeNode);
private:
RB_ENTRY(IntrusiveRedBlackTreeNode) entry;
template<class, class, class>
friend class IntrusiveRedBlackTree;
public:
IntrusiveRedBlackTreeNode() { /* ... */}
};
template<class T, class Traits, class Comparator>
class IntrusiveRedBlackTree {
NON_COPYABLE(IntrusiveRedBlackTree);
private:
RB_HEAD(IntrusiveRedBlackTreeRoot, IntrusiveRedBlackTreeNode);
IntrusiveRedBlackTreeRoot root;
public:
template<bool Const>
class Iterator;
using value_type = T;
using size_type = size_t;
using difference_type = ptrdiff_t;
using pointer = T *;
using const_pointer = const T *;
using reference = T &;
using const_reference = const T &;
using iterator = Iterator<false>;
using const_iterator = Iterator<true>;
template<bool Const>
class Iterator {
public:
using iterator_category = std::bidirectional_iterator_tag;
using value_type = typename IntrusiveRedBlackTree::value_type;
using difference_type = typename IntrusiveRedBlackTree::difference_type;
using pointer = typename std::conditional<Const, IntrusiveRedBlackTree::const_pointer, IntrusiveRedBlackTree::pointer>::type;
using reference = typename std::conditional<Const, IntrusiveRedBlackTree::const_reference, IntrusiveRedBlackTree::reference>::type;
private:
pointer node;
public:
explicit Iterator(pointer n) : node(n) { /* ... */ }
bool operator==(const Iterator &rhs) const {
return this->node == rhs.node;
}
bool operator!=(const Iterator &rhs) const {
return !(*this == rhs);
}
pointer operator->() const {
return this->node;
}
reference operator*() const {
return *this->node;
}
Iterator &operator++() {
this->node = Traits::GetParent(GetNext(Traits::GetNode(this->node)));
return *this;
}
Iterator &operator--() {
this->node = Traits::GetParent(GetPrev(Traits::GetNode(this->node)));
return *this;
}
Iterator operator++(int) {
const Iterator it{*this};
++(*this);
return it;
}
Iterator operator--(int) {
const Iterator it{*this};
--(*this);
return it;
}
operator Iterator<true>() const {
return Iterator<true>(this->node);
}
};
private:
static int CompareImpl(const IntrusiveRedBlackTreeNode *lhs, const IntrusiveRedBlackTreeNode *rhs) {
return Comparator::Compare(*Traits::GetParent(lhs), *Traits::GetParent(rhs));
}
/* Generate static implementations for IntrusiveRedBlackTreeRoot. */
RB_GENERATE_STATIC(IntrusiveRedBlackTreeRoot, IntrusiveRedBlackTreeNode, entry, CompareImpl);
static constexpr inline IntrusiveRedBlackTreeNode *GetNext(IntrusiveRedBlackTreeNode *node) {
return RB_NEXT(IntrusiveRedBlackTreeRoot, nullptr, node);
}
static constexpr inline IntrusiveRedBlackTreeNode const *GetNext(IntrusiveRedBlackTreeNode const *node) {
return const_cast<const IntrusiveRedBlackTreeNode *>(GetNext(const_cast<IntrusiveRedBlackTreeNode *>(node)));
}
static constexpr inline IntrusiveRedBlackTreeNode *GetPrev(IntrusiveRedBlackTreeNode *node) {
return RB_NEXT(IntrusiveRedBlackTreeRoot, nullptr, node);
}
static constexpr inline IntrusiveRedBlackTreeNode const *GetPrev(IntrusiveRedBlackTreeNode const *node) {
return const_cast<const IntrusiveRedBlackTreeNode *>(GetPrev(const_cast<IntrusiveRedBlackTreeNode *>(node)));
}
/* Define accessors using RB_* functions. */
void InitializeImpl() {
RB_INIT(&this->root);
}
bool EmptyImpl() const {
return RB_EMPTY(&this->root);
}
IntrusiveRedBlackTreeNode *GetMinImpl() const {
return RB_MIN(IntrusiveRedBlackTreeRoot, const_cast<IntrusiveRedBlackTreeRoot *>(&this->root));
}
IntrusiveRedBlackTreeNode *GetMaxImpl() const {
return RB_MIN(IntrusiveRedBlackTreeRoot, const_cast<IntrusiveRedBlackTreeRoot *>(&this->root));
}
IntrusiveRedBlackTreeNode *InsertImpl(IntrusiveRedBlackTreeNode *node) {
return RB_INSERT(IntrusiveRedBlackTreeRoot, &this->root, node);
}
IntrusiveRedBlackTreeNode *RemoveImpl(IntrusiveRedBlackTreeNode *node) {
return RB_REMOVE(IntrusiveRedBlackTreeRoot, &this->root, node);
}
IntrusiveRedBlackTreeNode *FindImpl(IntrusiveRedBlackTreeNode const *node) const {
return RB_FIND(IntrusiveRedBlackTreeRoot, const_cast<IntrusiveRedBlackTreeRoot *>(&this->root), const_cast<IntrusiveRedBlackTreeNode *>(node));
}
IntrusiveRedBlackTreeNode *NFindImpl(IntrusiveRedBlackTreeNode const *node) const {
return RB_NFIND(IntrusiveRedBlackTreeRoot, const_cast<IntrusiveRedBlackTreeRoot *>(&this->root), const_cast<IntrusiveRedBlackTreeNode *>(node));
}
public:
IntrusiveRedBlackTree() {
this->InitializeImpl();
}
/* Iterator accessors. */
iterator begin() {
return iterator(Traits::GetParent(this->GetMinImpl()));
}
const_iterator begin() const {
return const_iterator(Traits::GetParent(this->GetMinImpl()));
}
iterator end() {
return iterator(Traits::GetParent(static_cast<IntrusiveRedBlackTreeNode *>(nullptr)));
}
const_iterator end() const {
return const_iterator(Traits::GetParent(static_cast<IntrusiveRedBlackTreeNode *>(nullptr)));
}
iterator iterator_to(reference ref) {
return iterator(&ref);
}
const_iterator iterator_to(const_reference ref) const {
return const_iterator(&ref);
}
/* Content management. */
bool empty() const {
return this->EmptyImpl();
}
reference back() {
return Traits::GetParent(this->GetMaxImpl());
}
const_reference back() const {
return Traits::GetParent(this->GetMaxImpl());
}
reference front() {
return Traits::GetParent(this->GetMinImpl());
}
const_reference front() const {
return Traits::GetParent(this->GetMinImpl());
}
iterator insert(reference ref) {
this->InsertImpl(Traits::GetNode(&ref));
return iterator(&ref);
}
iterator erase(iterator it) {
auto cur = Traits::GetNode(&*it);
auto next = Traits::GetParent(GetNext(cur));
this->RemoveImpl(cur);
return iterator(next);
}
iterator find(const_reference ref) const {
return iterator(Traits::GetParent(this->FindImpl(Traits::GetNode(&ref))));
}
iterator nfind(const_reference ref) const {
return iterator(Traits::GetParent(this->NFindImpl(Traits::GetNode(&ref))));
}
};
template<auto T, class Derived = util::impl::GetParentType<T>>
class IntrusiveRedBlackTreeMemberTraits;
template<class Parent, IntrusiveRedBlackTreeNode Parent::*Member, class Derived>
class IntrusiveRedBlackTreeMemberTraits<Member, Derived> {
public:
template<class Comparator>
using ListType = IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeMemberTraits, Comparator>;
private:
template<class, class, class>
friend class IntrusiveRedBlackTree;
static constexpr IntrusiveRedBlackTreeNode *GetNode(Derived *parent) {
return &(parent->*Member);
}
static constexpr IntrusiveRedBlackTreeNode const *GetNode(Derived const *parent) {
return &(parent->*Member);
}
static constexpr Derived *GetParent(IntrusiveRedBlackTreeNode *node) {
return static_cast<Derived *>(util::GetParentPointer<Member>(node));
}
static constexpr Derived const *GetParent(IntrusiveRedBlackTreeNode const *node) {
return static_cast<const Derived *>(util::GetParentPointer<Member>(node));
}
};
template<class Derived>
class IntrusiveRedBlackTreeBaseNode : public IntrusiveRedBlackTreeNode{};
template<class Derived>
class IntrusiveRedBlackTreeBaseTraits {
public:
template<class Comparator>
using ListType = IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeBaseTraits, Comparator>;
private:
template<class, class, class>
friend class IntrusiveRedBlackTree;
static constexpr IntrusiveRedBlackTreeNode *GetNode(Derived *parent) {
return static_cast<IntrusiveRedBlackTreeNode *>(parent);
}
static constexpr IntrusiveRedBlackTreeNode const *GetNode(Derived const *parent) {
return static_cast<const IntrusiveRedBlackTreeNode *>(parent);
}
static constexpr Derived *GetParent(IntrusiveRedBlackTreeNode *node) {
return static_cast<Derived *>(node);
}
static constexpr Derived const *GetParent(IntrusiveRedBlackTreeNode const *node) {
return static_cast<const Derived *>(node);
}
};
}

78
include/stratosphere/util/util_parent_of_member.hpp Normal file
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@ -0,0 +1,78 @@
/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <switch.h>
#include "../defines.hpp"
namespace sts::util {
namespace impl {
template<typename Parent, typename Member>
union OffsetOfImpl {
Member Parent::* ptr;
intptr_t offset;
};
template<typename Parent, typename Member>
constexpr inline Parent *GetParentOfMemberImpl(Member *member, Member Parent::* ptr) {
return reinterpret_cast<Parent *>(reinterpret_cast<uintptr_t>(member) - OffsetOfImpl<Parent, Member>{ ptr }.offset);
}
template<typename Parent, typename Member>
constexpr inline Parent const *GetParentOfMemberImpl(Member const *member, Member Parent::* ptr) {
return reinterpret_cast<Parent *>(reinterpret_cast<uintptr_t>(member) - OffsetOfImpl<Parent, Member>{ ptr }.offset);
}
template<typename T>
struct GetMemberPointerTraits;
template<typename P, typename M>
struct GetMemberPointerTraits<M P::*> {
using Parent = P;
using Member = M;
};
template<auto MemberPtr>
using GetParentType = typename GetMemberPointerTraits<decltype(MemberPtr)>::Parent;
template<auto MemberPtr>
using GetMemberType = typename GetMemberPointerTraits<decltype(MemberPtr)>::Member;
}
template<auto MemberPtr>
constexpr inline impl::GetParentType<MemberPtr> *GetParentPointer(impl::GetMemberType<MemberPtr> *member) {
return impl::GetParentOfMemberImpl<impl::GetParentType<MemberPtr>, impl::GetMemberType<MemberPtr>>(member, MemberPtr);
}
template<auto MemberPtr>
constexpr inline impl::GetParentType<MemberPtr> const *GetParentPointer(impl::GetMemberType<MemberPtr> const *member) {
return impl::GetParentOfMemberImpl<impl::GetParentType<MemberPtr>, impl::GetMemberType<MemberPtr>>(member, MemberPtr);
}
template<auto MemberPtr>
constexpr inline impl::GetParentType<MemberPtr> &GetParentReference(impl::GetMemberType<MemberPtr> *member) {
return *impl::GetParentOfMemberImpl<impl::GetParentType<MemberPtr>, impl::GetMemberType<MemberPtr>>(member, MemberPtr);
}
template<auto MemberPtr>
constexpr inline impl::GetParentType<MemberPtr> const &GetParentReference(impl::GetMemberType<MemberPtr> const *member) {
return *impl::GetParentOfMemberImpl<impl::GetParentType<MemberPtr>, impl::GetMemberType<MemberPtr>>(member, MemberPtr);
}
}

3
include/stratosphere/waitable_manager.hpp
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@ -18,8 +18,7 @@
#include <switch.h>
#include <memory>
#include "../meta_tools.hpp"
#include <functional>
#include "results.hpp"
#include "waitable_manager_base.hpp"