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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/*
* MessagePack for C memory pool implementation
*
* Copyright (C) 2008-2010 FURUHASHI Sadayuki
*
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef MSGPACK_ZONE_H
#define MSGPACK_ZONE_H
#include "sysdep.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup msgpack_zone Memory zone
* @ingroup msgpack
* @{
*/
typedef struct msgpack_zone_finalizer {
void (*func)(void* data);
void* data;
} msgpack_zone_finalizer;
typedef struct msgpack_zone_finalizer_array {
msgpack_zone_finalizer* tail;
msgpack_zone_finalizer* end;
msgpack_zone_finalizer* array;
} msgpack_zone_finalizer_array;
struct msgpack_zone_chunk;
typedef struct msgpack_zone_chunk msgpack_zone_chunk;
typedef struct msgpack_zone_chunk_list {
size_t free;
char* ptr;
msgpack_zone_chunk* head;
} msgpack_zone_chunk_list;
typedef struct msgpack_zone {
msgpack_zone_chunk_list chunk_list;
msgpack_zone_finalizer_array finalizer_array;
size_t chunk_size;
} msgpack_zone;
#ifndef MSGPACK_ZONE_CHUNK_SIZE
#define MSGPACK_ZONE_CHUNK_SIZE 8192
#endif
MSGPACK_DLLEXPORT
bool msgpack_zone_init(msgpack_zone* zone, size_t chunk_size);
MSGPACK_DLLEXPORT
void msgpack_zone_destroy(msgpack_zone* zone);
MSGPACK_DLLEXPORT
msgpack_zone* msgpack_zone_new(size_t chunk_size);
MSGPACK_DLLEXPORT
void msgpack_zone_free(msgpack_zone* zone);
static inline void* msgpack_zone_malloc(msgpack_zone* zone, size_t size);
static inline void* msgpack_zone_malloc_no_align(msgpack_zone* zone, size_t size);
static inline bool msgpack_zone_push_finalizer(msgpack_zone* zone,
void (*func)(void* data), void* data);
static inline void msgpack_zone_swap(msgpack_zone* a, msgpack_zone* b);
MSGPACK_DLLEXPORT
bool msgpack_zone_is_empty(msgpack_zone* zone);
MSGPACK_DLLEXPORT
void msgpack_zone_clear(msgpack_zone* zone);
/** @} */
#ifndef MSGPACK_ZONE_ALIGN
#define MSGPACK_ZONE_ALIGN sizeof(void*)
#endif
MSGPACK_DLLEXPORT
void* msgpack_zone_malloc_expand(msgpack_zone* zone, size_t size);
static inline void* msgpack_zone_malloc_no_align(msgpack_zone* zone, size_t size)
{
char* ptr;
msgpack_zone_chunk_list* cl = &zone->chunk_list;
if(zone->chunk_list.free < size) {
return msgpack_zone_malloc_expand(zone, size);
}
ptr = cl->ptr;
cl->free -= size;
cl->ptr += size;
return ptr;
}
static inline void* msgpack_zone_malloc(msgpack_zone* zone, size_t size)
{
char* aligned =
(char*)(
(size_t)(
zone->chunk_list.ptr + (MSGPACK_ZONE_ALIGN - 1)
) / MSGPACK_ZONE_ALIGN * MSGPACK_ZONE_ALIGN
);
size_t adjusted_size = size + (aligned - zone->chunk_list.ptr);
if(zone->chunk_list.free >= adjusted_size) {
zone->chunk_list.free -= adjusted_size;
zone->chunk_list.ptr += adjusted_size;
return aligned;
}
{
void* ptr = msgpack_zone_malloc_expand(zone, size + (MSGPACK_ZONE_ALIGN - 1));
if (ptr) {
return (char*)((size_t)(ptr) / MSGPACK_ZONE_ALIGN * MSGPACK_ZONE_ALIGN);
}
}
return NULL;
}
bool msgpack_zone_push_finalizer_expand(msgpack_zone* zone,
void (*func)(void* data), void* data);
static inline bool msgpack_zone_push_finalizer(msgpack_zone* zone,
void (*func)(void* data), void* data)
{
msgpack_zone_finalizer_array* const fa = &zone->finalizer_array;
msgpack_zone_finalizer* fin = fa->tail;
if(fin == fa->end) {
return msgpack_zone_push_finalizer_expand(zone, func, data);
}
fin->func = func;
fin->data = data;
++fa->tail;
return true;
}
static inline void msgpack_zone_swap(msgpack_zone* a, msgpack_zone* b)
{
msgpack_zone tmp = *a;
*a = *b;
*b = tmp;
}
#ifdef __cplusplus
}
#endif
#endif /* msgpack/zone.h */
|
