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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2009-2014. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
/* Include file for writers of Native Implemented Functions.
*/
#ifndef __ERL_NIF_H__
#define __ERL_NIF_H__
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "erl_native_features_config.h"
#include "erl_drv_nif.h"
/* Version history:
** 0.1: R13B03
** 1.0: R13B04
** 2.0: R14A
** 2.1: R14B02 "vm_variant"
** 2.2: R14B03 enif_is_exception
** 2.3: R15 enif_make_reverse_list, enif_is_number
** 2.4: R16 enif_consume_timeslice
** 2.5: First experimental maps API additions (libs of this version is not compatible with any other VM)
** 2.5: R17 Maps API additions
** 2.6: R17 with maps
** R17 dirty schedulers
** 2.7: 17.3 add enif_schedule_nif
** remove enif_schedule_dirty_nif, enif_schedule_dirty_nif_finalizer, enif_dirty_nif_finalizer
** add ErlNifEntry options
** add ErlNifFunc flags
** 2.8: 18.0 add enif_has_pending_exception
** 2.9: 18.2 enif_getenv
** 2.10: Time API
*/
#define ERL_NIF_MAJOR_VERSION 2
#define ERL_NIF_MINOR_VERSION 10
/*
* The emulator will refuse to load a nif-lib with a major version
* lower than ERL_NIF_MIN_REQUIRED_MAJOR_VERSION_ON_LOAD. The load
* may however fail if user have not removed use of deprecated
* symbols.
*
* The ERL_NIF_MIN_REQUIRED_MAJOR_VERSION_ON_LOAD have to allow
* loading of nif-libs built at least two major OTP releases
* ago.
*/
#define ERL_NIF_MIN_REQUIRED_MAJOR_VERSION_ON_LOAD 2
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef ErlNapiUInt64 ErlNifUInt64;
typedef ErlNapiSInt64 ErlNifSInt64;
typedef ErlNapiUInt ErlNifUInt;
typedef ErlNapiSInt ErlNifSInt;
# define ERL_NIF_VM_VARIANT "beam.vanilla"
typedef ErlNifUInt ERL_NIF_TERM;
typedef ERL_NIF_TERM ERL_NIF_UINT;
typedef ErlNifSInt64 ErlNifTime;
#define ERL_NIF_TIME_ERROR ((ErlNifSInt64) ERTS_NAPI_TIME_ERROR__)
typedef enum {
ERL_NIF_SEC = ERTS_NAPI_SEC__,
ERL_NIF_MSEC = ERTS_NAPI_MSEC__,
ERL_NIF_USEC = ERTS_NAPI_USEC__,
ERL_NIF_NSEC = ERTS_NAPI_NSEC__
} ErlNifTimeUnit;
struct enif_environment_t;
typedef struct enif_environment_t ErlNifEnv;
typedef struct
{
const char* name;
unsigned arity;
ERL_NIF_TERM (*fptr)(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
unsigned flags;
}ErlNifFunc;
typedef struct enif_entry_t
{
int major;
int minor;
const char* name;
int num_of_funcs;
ErlNifFunc* funcs;
int (*load) (ErlNifEnv*, void** priv_data, ERL_NIF_TERM load_info);
int (*reload) (ErlNifEnv*, void** priv_data, ERL_NIF_TERM load_info);
int (*upgrade)(ErlNifEnv*, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info);
void (*unload) (ErlNifEnv*, void* priv_data);
const char* vm_variant;
unsigned options;
}ErlNifEntry;
/* Field bits for ErlNifEntry options */
#define ERL_NIF_DIRTY_NIF_OPTION 1
typedef struct
{
size_t size;
unsigned char* data;
/* Internals (avert your eyes) */
ERL_NIF_TERM bin_term;
void* ref_bin;
}ErlNifBinary;
typedef struct enif_resource_type_t ErlNifResourceType;
typedef void ErlNifResourceDtor(ErlNifEnv*, void*);
typedef enum
{
ERL_NIF_RT_CREATE = 1,
ERL_NIF_RT_TAKEOVER = 2
}ErlNifResourceFlags;
typedef enum
{
ERL_NIF_LATIN1 = 1
}ErlNifCharEncoding;
typedef struct
{
ERL_NIF_TERM pid; /* internal, may change */
}ErlNifPid;
typedef ErlDrvSysInfo ErlNifSysInfo;
typedef struct ErlDrvTid_ *ErlNifTid;
typedef struct ErlDrvMutex_ ErlNifMutex;
typedef struct ErlDrvCond_ ErlNifCond;
typedef struct ErlDrvRWLock_ ErlNifRWLock;
typedef int ErlNifTSDKey;
typedef ErlDrvThreadOpts ErlNifThreadOpts;
#ifdef ERL_NIF_DIRTY_SCHEDULER_SUPPORT
typedef enum
{
ERL_NIF_DIRTY_JOB_CPU_BOUND = ERL_DRV_DIRTY_JOB_CPU_BOUND,
ERL_NIF_DIRTY_JOB_IO_BOUND = ERL_DRV_DIRTY_JOB_IO_BOUND
}ErlNifDirtyTaskFlags;
#endif
typedef struct /* All fields all internal and may change */
{
ERL_NIF_TERM map;
ERL_NIF_UINT size;
ERL_NIF_UINT idx;
union {
struct {
ERL_NIF_TERM *ks;
ERL_NIF_TERM *vs;
}flat;
struct {
struct ErtsDynamicWStack_* wstack;
ERL_NIF_TERM* kv;
}hash;
}u;
void* __spare__[2]; /* for future additions to be ABI compatible (same struct size) */
} ErlNifMapIterator;
typedef enum {
ERL_NIF_MAP_ITERATOR_FIRST = 1,
ERL_NIF_MAP_ITERATOR_LAST = 2,
/* deprecated synonyms (undocumented in 17 and 18-rc) */
ERL_NIF_MAP_ITERATOR_HEAD = ERL_NIF_MAP_ITERATOR_FIRST,
ERL_NIF_MAP_ITERATOR_TAIL = ERL_NIF_MAP_ITERATOR_LAST
} ErlNifMapIteratorEntry;
#if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_))
# define ERL_NIF_API_FUNC_DECL(RET_TYPE, NAME, ARGS) RET_TYPE (*NAME) ARGS
typedef struct {
# include "erl_nif_api_funcs.h"
void* erts_alc_test;
} TWinDynNifCallbacks;
extern TWinDynNifCallbacks WinDynNifCallbacks;
# undef ERL_NIF_API_FUNC_DECL
#endif
#if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_)) && !defined(STATIC_ERLANG_DRIVER) && !defined(STATIC_ERLANG_NIF)
# define ERL_NIF_API_FUNC_MACRO(NAME) (WinDynNifCallbacks.NAME)
# include "erl_nif_api_funcs.h"
/* note that we have to keep ERL_NIF_API_FUNC_MACRO defined */
#else /* non windows or included from emulator itself */
# define ERL_NIF_API_FUNC_DECL(RET_TYPE, NAME, ARGS) extern RET_TYPE NAME ARGS
# include "erl_nif_api_funcs.h"
# undef ERL_NIF_API_FUNC_DECL
#endif
#if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_))
# define ERL_NIF_INIT_GLOB TWinDynNifCallbacks WinDynNifCallbacks;
# define ERL_NIF_INIT_ARGS TWinDynNifCallbacks* callbacks
# define ERL_NIF_INIT_BODY memcpy(&WinDynNifCallbacks,callbacks,sizeof(TWinDynNifCallbacks))
# define ERL_NIF_INIT_EXPORT __declspec(dllexport)
#else
# define ERL_NIF_INIT_GLOB
# define ERL_NIF_INIT_ARGS void
# define ERL_NIF_INIT_BODY
# if defined(__GNUC__) && __GNUC__ >= 4
# define ERL_NIF_INIT_EXPORT __attribute__ ((visibility("default")))
# elif defined (__SUNPRO_C) && (__SUNPRO_C >= 0x550)
# define ERL_NIF_INIT_EXPORT __global
# else
# define ERL_NIF_INIT_EXPORT
# endif
#endif
#ifdef STATIC_ERLANG_NIF
# define ERL_NIF_INIT_DECL(MODNAME) ErlNifEntry* MODNAME ## _nif_init(ERL_NIF_INIT_ARGS)
#else
# define ERL_NIF_INIT_DECL(MODNAME) ERL_NIF_INIT_EXPORT ErlNifEntry* nif_init(ERL_NIF_INIT_ARGS)
#endif
#ifdef ERL_NIF_DIRTY_SCHEDULER_SUPPORT
# define ERL_NIF_ENTRY_OPTIONS ERL_NIF_DIRTY_NIF_OPTION
#else
# define ERL_NIF_ENTRY_OPTIONS 0
#endif
#ifdef __cplusplus
}
# define ERL_NIF_INIT_PROLOGUE extern "C" {
# define ERL_NIF_INIT_EPILOGUE }
#else
# define ERL_NIF_INIT_PROLOGUE
# define ERL_NIF_INIT_EPILOGUE
#endif
#define ERL_NIF_INIT(NAME, FUNCS, LOAD, RELOAD, UPGRADE, UNLOAD) \
ERL_NIF_INIT_PROLOGUE \
ERL_NIF_INIT_GLOB \
ERL_NIF_INIT_DECL(NAME); \
ERL_NIF_INIT_DECL(NAME) \
{ \
static ErlNifEntry entry = \
{ \
ERL_NIF_MAJOR_VERSION, \
ERL_NIF_MINOR_VERSION, \
#NAME, \
sizeof(FUNCS) / sizeof(*FUNCS), \
FUNCS, \
LOAD, RELOAD, UPGRADE, UNLOAD, \
ERL_NIF_VM_VARIANT, \
ERL_NIF_ENTRY_OPTIONS \
}; \
ERL_NIF_INIT_BODY; \
return &entry; \
} \
ERL_NIF_INIT_EPILOGUE
#if defined(USE_DYNAMIC_TRACE) && (defined(USE_DTRACE) || defined(USE_SYSTEMTAP))
#define HAVE_USE_DTRACE 1
#endif
#ifdef HAVE_USE_DTRACE
ERL_NIF_TERM erl_nif_user_trace_s1(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
ERL_NIF_TERM erl_nif_user_trace_i4s4(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
ERL_NIF_TERM erl_nif_user_trace_n(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
#endif
#endif /* __ERL_NIF_H__ */
|
