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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_OBJCLASS_OBJCLASS_PUBLIC_H
#define CEPH_OBJCLASS_OBJCLASS_PUBLIC_H
#ifdef __cplusplus
#include "buffer.h"
extern "C" {
#endif
#define CEPH_CLS_API [[gnu::visibility("default")]]
#define CLS_VER(maj,min) \
int __cls_ver__## maj ## _ ##min = 0; \
int __cls_ver_maj = maj; \
int __cls_ver_min = min;
#define CLS_NAME(name) \
int __cls_name__## name = 0; \
const char *__cls_name = #name;
#define CLS_INIT(name) \
CEPH_CLS_API void __cls_init()
#define CLS_METHOD_RD 0x1 /// method executes read operations
#define CLS_METHOD_WR 0x2 /// method executes write operations
#define CLS_METHOD_PROMOTE 0x8 /// method cannot be proxied to base tier
#define CLS_LOG(level, fmt, ...) \
cls_log(level, "<cls> %s:%d: " fmt, __FILE__, __LINE__, ##__VA_ARGS__)
#define CLS_ERR(fmt, ...) CLS_LOG(0, fmt, ##__VA_ARGS__)
/**
* Initialize a class.
*/
void __cls_init();
/**
* @typdef cls_handle_t
*
* A handle for interacting with the object class.
*/
typedef void *cls_handle_t;
/**
* @typedef cls_method_handle_t
*
* A handle for interacting with the method of the object class.
*/
typedef void *cls_method_handle_t;
/**
* @typedef cls_method_context_t
*
* A context for the method of the object class.
*/
typedef void* cls_method_context_t;
/*class utils*/
extern int cls_log(int level, const char *format, ...)
__attribute__((__format__(printf, 2, 3)));
/* class registration api */
extern int cls_register(const char *name, cls_handle_t *handle);
#ifdef __cplusplus
}
/**
* @typedef cls_method_cxx_call_t
*
*/
typedef int (*cls_method_cxx_call_t)(cls_method_context_t ctx,
class ceph::buffer::list *inbl, class ceph::buffer::list *outbl);
/**
* Register a method.
*
* @param hclass
* @param method
* @param flags
* @param class_call
* @param handle
*/
extern int cls_register_cxx_method(cls_handle_t hclass, const char *method, int flags,
cls_method_cxx_call_t class_call, cls_method_handle_t *handle);
/**
* Create an object.
*
* @param hctx
* @param exclusive
*/
extern int cls_cxx_create(cls_method_context_t hctx, bool exclusive);
/**
* Remove an object.
*
* @param hctx
*/
extern int cls_cxx_remove(cls_method_context_t hctx);
/**
* Check on the status of an object.
*
* @param hctx
* @param size
* @param mtime
*/
extern int cls_cxx_stat(cls_method_context_t hctx, uint64_t *size, time_t *mtime);
/**
* Read contents of an object.
*
* @param hctx
* @param ofs
* @param len
* @param bl
*/
extern int cls_cxx_read(cls_method_context_t hctx, int ofs, int len, ceph::bufferlist *bl);
/**
* Write to the object.
*
* @param hctx
* @param ofs
* @param len
* @param bl
*/
extern int cls_cxx_write(cls_method_context_t hctx, int ofs, int len, ceph::bufferlist *bl);
/**
* Get xattr of the object.
*
* @param hctx
* @param name
* @param outbl
*/
extern int cls_cxx_getxattr(cls_method_context_t hctx, const char *name,
ceph::bufferlist *outbl);
/**
* Set xattr of the object.
*
* @param hctx
* @param name
* @param inbl
*/
extern int cls_cxx_setxattr(cls_method_context_t hctx, const char *name,
ceph::bufferlist *inbl);
/**
* Get value corresponding to a key from the map.
*
* @param hctx
* @param key
* @param outbl
*/
extern int cls_cxx_map_get_val(cls_method_context_t hctx,
const std::string &key, ceph::bufferlist *outbl);
/**
* Set value corresponding to a key in the map.
*
* @param hctx
* @param key
* @param inbl
*/
extern int cls_cxx_map_set_val(cls_method_context_t hctx,
const std::string &key, ceph::bufferlist *inbl);
#endif
#endif
|
