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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2017 ngtcp2 contributors
* Copyright (c) 2012 nghttp2 contributors
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef NGHTTP2_MAP_H
#define NGHTTP2_MAP_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <nghttp2/nghttp2.h>
#include "nghttp2_mem.h"
/* Implementation of unordered map */
typedef int32_t nghttp2_map_key_type;
typedef struct nghttp2_map_bucket {
uint32_t hash;
nghttp2_map_key_type key;
void *data;
} nghttp2_map_bucket;
typedef struct nghttp2_map {
nghttp2_map_bucket *table;
nghttp2_mem *mem;
size_t size;
uint32_t tablelen;
uint32_t tablelenbits;
} nghttp2_map;
/*
* Initializes the map |map|.
*/
void nghttp2_map_init(nghttp2_map *map, nghttp2_mem *mem);
/*
* Deallocates any resources allocated for |map|. The stored entries
* are not freed by this function. Use nghttp2_map_each_free() to free
* each entries.
*/
void nghttp2_map_free(nghttp2_map *map);
/*
* Deallocates each entries using |func| function and any resources
* allocated for |map|. The |func| function is responsible for freeing
* given the |data| object. The |ptr| will be passed to the |func| as
* send argument. The return value of the |func| will be ignored.
*/
void nghttp2_map_each_free(nghttp2_map *map, int (*func)(void *data, void *ptr),
void *ptr);
/*
* Inserts the new |data| with the |key| to the map |map|.
*
* This function returns 0 if it succeeds, or one of the following
* negative error codes:
*
* NGHTTP2_ERR_INVALID_ARGUMENT
* The item associated by |key| already exists.
* NGHTTP2_ERR_NOMEM
* Out of memory
*/
int nghttp2_map_insert(nghttp2_map *map, nghttp2_map_key_type key, void *data);
/*
* Returns the data associated by the key |key|. If there is no such
* data, this function returns NULL.
*/
void *nghttp2_map_find(nghttp2_map *map, nghttp2_map_key_type key);
/*
* Removes the data associated by the key |key| from the |map|. The
* removed data is not freed by this function.
*
* This function returns 0 if it succeeds, or one of the following
* negative error codes:
*
* NGHTTP2_ERR_INVALID_ARGUMENT
* The data associated by |key| does not exist.
*/
int nghttp2_map_remove(nghttp2_map *map, nghttp2_map_key_type key);
/*
* Removes all entries from |map|.
*/
void nghttp2_map_clear(nghttp2_map *map);
/*
* Returns the number of items stored in the map |map|.
*/
size_t nghttp2_map_size(nghttp2_map *map);
/*
* Applies the function |func| to each data in the |map| with the
* optional user supplied pointer |ptr|.
*
* If the |func| returns 0, this function calls the |func| with the
* next data. If the |func| returns nonzero, it will not call the
* |func| for further entries and return the return value of the
* |func| immediately. Thus, this function returns 0 if all the
* invocations of the |func| return 0, or nonzero value which the last
* invocation of |func| returns.
*
* Don't use this function to free each data. Use
* nghttp2_map_each_free() instead.
*/
int nghttp2_map_each(nghttp2_map *map, int (*func)(void *data, void *ptr),
void *ptr);
void nghttp2_map_print_distance(nghttp2_map *map);
#endif /* NGHTTP2_MAP_H */
|
