2 * Copyright (c) 2013 EMC Corp.
3 * Copyright (c) 2011 Jeffrey Roberson <jeff@freebsd.org>
4 * Copyright (c) 2008 Mayur Shardul <mayur.shardul@gmail.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #ifndef _SYS_PCTRIE_H_
32 #define _SYS_PCTRIE_H_
34 #include <sys/_pctrie.h>
38 #define PCTRIE_DEFINE(name, type, field, allocfn, freefn) \
40 CTASSERT(sizeof(((struct type *)0)->field) == sizeof(uint64_t)); \
41 CTASSERT((__offsetof(struct type, field) & (sizeof(uint64_t) - 1)) == 0); \
43 static __inline struct type * \
44 name##_PCTRIE_VAL2PTR(uint64_t *val) \
49 return (struct type *) \
50 ((uintptr_t)val - __offsetof(struct type, field)); \
53 static __inline uint64_t * \
54 name##_PCTRIE_PTR2VAL(struct type *ptr) \
61 name##_PCTRIE_INSERT(struct pctrie *ptree, struct type *ptr) \
64 return pctrie_insert(ptree, name##_PCTRIE_PTR2VAL(ptr), \
68 static __inline struct type * \
69 name##_PCTRIE_LOOKUP(struct pctrie *ptree, uint64_t key) \
72 return name##_PCTRIE_VAL2PTR(pctrie_lookup(ptree, key)); \
75 static __inline struct type * \
76 name##_PCTRIE_LOOKUP_LE(struct pctrie *ptree, uint64_t key) \
79 return name##_PCTRIE_VAL2PTR(pctrie_lookup_le(ptree, key)); \
82 static __inline struct type * \
83 name##_PCTRIE_LOOKUP_GE(struct pctrie *ptree, uint64_t key) \
86 return name##_PCTRIE_VAL2PTR(pctrie_lookup_ge(ptree, key)); \
89 static __inline void \
90 name##_PCTRIE_RECLAIM(struct pctrie *ptree) \
93 pctrie_reclaim_allnodes(ptree, freefn); \
96 static __inline void \
97 name##_PCTRIE_REMOVE(struct pctrie *ptree, uint64_t key) \
100 pctrie_remove(ptree, key, freefn); \
103 typedef void *(*pctrie_alloc_t)(struct pctrie *ptree);
104 typedef void (*pctrie_free_t)(struct pctrie *ptree, void *node);
106 int pctrie_insert(struct pctrie *ptree, uint64_t *val,
107 pctrie_alloc_t allocfn);
108 uint64_t *pctrie_lookup(struct pctrie *ptree, uint64_t key);
109 uint64_t *pctrie_lookup_ge(struct pctrie *ptree, uint64_t key);
110 uint64_t *pctrie_lookup_le(struct pctrie *ptree, uint64_t key);
111 void pctrie_reclaim_allnodes(struct pctrie *ptree,
112 pctrie_free_t freefn);
113 void pctrie_remove(struct pctrie *ptree, uint64_t key,
114 pctrie_free_t freefn);
115 size_t pctrie_node_size(void);
116 int pctrie_zone_init(void *mem, int size, int flags);
119 #endif /* !_SYS_PCTRIE_H_ */