1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*
Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#ifndef __RBTHASH_TABLE_H_
#define __RBTHASH_TABLE_H_
#include <stdint.h> // for uint32_t
#include "glusterfs/glusterfs.h" // for gf_boolean_t, glusterfs_ctx_t
#include "glusterfs/list.h" // for list_head
#include "glusterfs/locking.h" // for gf_lock_t
struct mem_pool;
#define GF_RBTHASH_MEMPOOL 16384 // 1048576
#define GF_RBTHASH "rbthash"
struct rbthash_bucket {
struct rb_table *bucket;
gf_lock_t bucketlock;
};
typedef struct rbthash_entry {
void *data;
void *key;
int keylen;
uint32_t keyhash;
struct list_head list;
} rbthash_entry_t;
typedef uint32_t (*rbt_hasher_t)(void *data, int len);
typedef void (*rbt_data_destroyer_t)(void *data);
typedef void (*rbt_traverse_t)(void *data, void *mydata);
typedef struct rbthash_table {
int size;
int numbuckets;
struct mem_pool *entrypool;
gf_lock_t tablelock;
struct rbthash_bucket *buckets;
rbt_hasher_t hashfunc;
rbt_data_destroyer_t dfunc;
gf_boolean_t pool_alloced;
struct list_head list;
} rbthash_table_t;
extern rbthash_table_t *
rbthash_table_init(glusterfs_ctx_t *ctx, int buckets, rbt_hasher_t hfunc,
rbt_data_destroyer_t dfunc, unsigned long expected_entries,
struct mem_pool *entrypool);
extern int
rbthash_insert(rbthash_table_t *tbl, void *data, void *key, int keylen);
extern void *
rbthash_get(rbthash_table_t *tbl, void *key, int keylen);
extern void *
rbthash_remove(rbthash_table_t *tbl, void *key, int keylen);
extern void *
rbthash_replace(rbthash_table_t *tbl, void *key, int keylen, void *newdata);
extern void
rbthash_table_destroy(rbthash_table_t *tbl);
extern void
rbthash_table_traverse(rbthash_table_t *tbl, rbt_traverse_t traverse,
void *mydata);
#endif
|
