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
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
|
/*
* %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
*/
#define ERL_NIF_MAJOR_VERSION 2
#define ERL_NIF_MINOR_VERSION 9
/*
* 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 SIZEOF_CHAR
# define SIZEOF_CHAR_SAVED__ SIZEOF_CHAR
# undef SIZEOF_CHAR
#endif
#ifdef SIZEOF_SHORT
# define SIZEOF_SHORT_SAVED__ SIZEOF_SHORT
# undef SIZEOF_SHORT
#endif
#ifdef SIZEOF_INT
# define SIZEOF_INT_SAVED__ SIZEOF_INT
# undef SIZEOF_INT
#endif
#ifdef SIZEOF_LONG
# define SIZEOF_LONG_SAVED__ SIZEOF_LONG
# undef SIZEOF_LONG
#endif
#ifdef SIZEOF_LONG_LONG
# define SIZEOF_LONG_LONG_SAVED__ SIZEOF_LONG_LONG
# undef SIZEOF_LONG_LONG
#endif
#ifdef HALFWORD_HEAP_EMULATOR
# define HALFWORD_HEAP_EMULATOR_SAVED__ HALFWORD_HEAP_EMULATOR
# undef HALFWORD_HEAP_EMULATOR
#endif
#include "erl_int_sizes_config.h"
#ifdef __cplusplus
extern "C" {
#endif
#if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_))
typedef unsigned __int64 ErlNifUInt64;
typedef __int64 ErlNifSInt64;
#elif SIZEOF_LONG == 8
typedef unsigned long ErlNifUInt64;
typedef long ErlNifSInt64;
#elif SIZEOF_LONG_LONG == 8
typedef unsigned long long ErlNifUInt64;
typedef long long ErlNifSInt64;
#else
#error No 64-bit integer type
#endif
#ifdef HALFWORD_HEAP_EMULATOR
# define ERL_NIF_VM_VARIANT "beam.halfword"
typedef unsigned int ERL_NIF_TERM;
#else
# define ERL_NIF_VM_VARIANT "beam.vanilla"
# if SIZEOF_LONG == SIZEOF_VOID_P
typedef unsigned long ERL_NIF_TERM;
# elif SIZEOF_LONG_LONG == SIZEOF_VOID_P
typedef unsigned long long ERL_NIF_TERM;
# endif
#endif
typedef ERL_NIF_TERM ERL_NIF_UINT;
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"
} 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;
# ifdef STATIC_ERLANG_NIF
# define ERL_NIF_INIT_DECL(MODNAME) __declspec(dllexport) ErlNifEntry* MODNAME ## _nif_init(TWinDynNifCallbacks* callbacks)
# else
# define ERL_NIF_INIT_DECL(MODNAME) __declspec(dllexport) ErlNifEntry* nif_init(TWinDynNifCallbacks* callbacks)
# endif
# define ERL_NIF_INIT_BODY memcpy(&WinDynNifCallbacks,callbacks,sizeof(TWinDynNifCallbacks))
#else
# define ERL_NIF_INIT_GLOB
# define ERL_NIF_INIT_BODY
# ifdef STATIC_ERLANG_NIF
# define ERL_NIF_INIT_DECL(MODNAME) ErlNifEntry* MODNAME ## _nif_init(void)
# else
# define ERL_NIF_INIT_DECL(MODNAME) ErlNifEntry* nif_init(void)
# endif
#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__ */
|
