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
137
138
139
140
|
/*
* ngtcp2
*
* Copyright (c) 2022 ngtcp2 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 NGTCP2_OBJALLOC_H
#define NGTCP2_OBJALLOC_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <ngtcp2/ngtcp2.h>
#include "ngtcp2_balloc.h"
#include "ngtcp2_opl.h"
#include "ngtcp2_macro.h"
#include "ngtcp2_mem.h"
/*
* ngtcp2_objalloc combines ngtcp2_balloc and ngtcp2_opl, and provides
* an object pool with the custom allocator to reduce the allocation
* and deallocation overheads for small objects.
*/
typedef struct ngtcp2_objalloc {
ngtcp2_balloc balloc;
ngtcp2_opl opl;
} ngtcp2_objalloc;
/*
* ngtcp2_objalloc_init initializes |objalloc|. |blklen| is directly
* passed to ngtcp2_balloc_init.
*/
void ngtcp2_objalloc_init(ngtcp2_objalloc *objalloc, size_t blklen,
const ngtcp2_mem *mem);
/*
* ngtcp2_objalloc_free releases all allocated resources.
*/
void ngtcp2_objalloc_free(ngtcp2_objalloc *objalloc);
/*
* ngtcp2_objalloc_clear releases all allocated resources and
* initializes its state.
*/
void ngtcp2_objalloc_clear(ngtcp2_objalloc *objalloc);
#ifndef NOMEMPOOL
# define ngtcp2_objalloc_def(NAME, TYPE, OPLENTFIELD) \
inline static void ngtcp2_objalloc_##NAME##_init( \
ngtcp2_objalloc *objalloc, size_t nmemb, const ngtcp2_mem *mem) { \
ngtcp2_objalloc_init( \
objalloc, ((sizeof(TYPE) + 0xfu) & ~(uintptr_t)0xfu) * nmemb, mem); \
} \
\
inline static TYPE *ngtcp2_objalloc_##NAME##_get( \
ngtcp2_objalloc *objalloc) { \
ngtcp2_opl_entry *oplent = ngtcp2_opl_pop(&objalloc->opl); \
TYPE *obj; \
int rv; \
\
if (!oplent) { \
rv = \
ngtcp2_balloc_get(&objalloc->balloc, (void **)&obj, sizeof(TYPE)); \
if (rv != 0) { \
return NULL; \
} \
\
return obj; \
} \
\
return ngtcp2_struct_of(oplent, TYPE, OPLENTFIELD); \
} \
\
inline static TYPE *ngtcp2_objalloc_##NAME##_len_get( \
ngtcp2_objalloc *objalloc, size_t len) { \
ngtcp2_opl_entry *oplent = ngtcp2_opl_pop(&objalloc->opl); \
TYPE *obj; \
int rv; \
\
if (!oplent) { \
rv = ngtcp2_balloc_get(&objalloc->balloc, (void **)&obj, len); \
if (rv != 0) { \
return NULL; \
} \
\
return obj; \
} \
\
return ngtcp2_struct_of(oplent, TYPE, OPLENTFIELD); \
} \
\
inline static void ngtcp2_objalloc_##NAME##_release( \
ngtcp2_objalloc *objalloc, TYPE *obj) { \
ngtcp2_opl_push(&objalloc->opl, &obj->OPLENTFIELD); \
}
#else /* NOMEMPOOL */
# define ngtcp2_objalloc_def(NAME, TYPE, OPLENTFIELD) \
inline static void ngtcp2_objalloc_##NAME##_init( \
ngtcp2_objalloc *objalloc, size_t nmemb, const ngtcp2_mem *mem) { \
ngtcp2_objalloc_init( \
objalloc, ((sizeof(TYPE) + 0xfu) & ~(uintptr_t)0xfu) * nmemb, mem); \
} \
\
inline static TYPE *ngtcp2_objalloc_##NAME##_get( \
ngtcp2_objalloc *objalloc) { \
return ngtcp2_mem_malloc(objalloc->balloc.mem, sizeof(TYPE)); \
} \
\
inline static TYPE *ngtcp2_objalloc_##NAME##_len_get( \
ngtcp2_objalloc *objalloc, size_t len) { \
return ngtcp2_mem_malloc(objalloc->balloc.mem, len); \
} \
\
inline static void ngtcp2_objalloc_##NAME##_release( \
ngtcp2_objalloc *objalloc, TYPE *obj) { \
ngtcp2_mem_free(objalloc->balloc.mem, obj); \
}
#endif /* NOMEMPOOL */
#endif /* NGTCP2_OBJALLOC_H */
|
