Commit | Line | Data |
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1c324e59 | 1 | /* |
e92f3e28 | 2 | * Copyright (c) 2011-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
1c324e59 | 3 | * |
e92f3e28 MD |
4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
5 | * of this software and associated documentation files (the "Software"), to deal | |
6 | * in the Software without restriction, including without limitation the rights | |
7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
8 | * copies of the Software, and to permit persons to whom the Software is | |
9 | * furnished to do so, subject to the following conditions: | |
1c324e59 | 10 | * |
e92f3e28 MD |
11 | * The above copyright notice and this permission notice shall be included in |
12 | * all copies or substantial portions of the Software. | |
d2428e87 MD |
13 | * |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
1c324e59 MD |
21 | */ |
22 | ||
23 | #include <stdio.h> | |
7d381d6e | 24 | #include <stdlib.h> |
1c324e59 | 25 | #include <urcu/compiler.h> |
f488575f | 26 | #include <urcu/rculist.h> |
1c324e59 | 27 | #include <lttng/ust-events.h> |
1c324e59 | 28 | #include <lttng/ringbuffer-config.h> |
a8909ba5 | 29 | #include <lttng/ust-compiler.h> |
000b8662 | 30 | #include <lttng/tracepoint.h> |
44c72f10 | 31 | #include <string.h> |
1c324e59 | 32 | |
000b8662 MD |
33 | #undef tp_list_for_each_entry_rcu |
34 | #define tp_list_for_each_entry_rcu(pos, head, member) \ | |
35 | for (pos = cds_list_entry(tp_rcu_dereference_bp((head)->next), __typeof__(*pos), member); \ | |
36 | &pos->member != (head); \ | |
37 | pos = cds_list_entry(tp_rcu_dereference_bp(pos->member.next), __typeof__(*pos), member)) | |
38 | ||
1c324e59 MD |
39 | /* |
40 | * TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the | |
41 | * same arguments and having the same field layout. | |
42 | * | |
43 | * TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with | |
44 | * its own provider and name. It refers to a class (template). | |
45 | * | |
46 | * TRACEPOINT_EVENT declared both a class and an instance and does a | |
47 | * direct mapping from the instance to the class. | |
48 | */ | |
49 | ||
50 | #undef TRACEPOINT_EVENT | |
51 | #define TRACEPOINT_EVENT(_provider, _name, _args, _fields) \ | |
52 | TRACEPOINT_EVENT_CLASS(_provider, _name, \ | |
53 | _TP_PARAMS(_args), \ | |
54 | _TP_PARAMS(_fields)) \ | |
55 | TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \ | |
68755429 | 56 | _TP_PARAMS(_args)) |
1c324e59 MD |
57 | |
58 | /* Helpers */ | |
59 | #define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) | |
60 | ||
61 | #define _tp_max_t(type, x, y) \ | |
62 | ({ \ | |
63 | type __max1 = (x); \ | |
64 | type __max2 = (y); \ | |
65 | __max1 > __max2 ? __max1: __max2; \ | |
66 | }) | |
67 | ||
68 | /* | |
69 | * Stage 0 of tracepoint event generation. | |
70 | * | |
71 | * Check that each TRACEPOINT_EVENT provider argument match the | |
72 | * TRACEPOINT_PROVIDER by creating dummy callbacks. | |
73 | */ | |
74 | ||
75 | /* Reset all macros within TRACEPOINT_EVENT */ | |
76 | #include <lttng/ust-tracepoint-event-reset.h> | |
77 | ||
7ce6b21d PW |
78 | static inline lttng_ust_notrace |
79 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void); | |
1c324e59 MD |
80 | static inline |
81 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void) | |
82 | { | |
83 | } | |
84 | ||
85 | #undef TRACEPOINT_EVENT_CLASS | |
86 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
87 | __tracepoint_provider_mismatch_##_provider(); | |
88 | ||
89 | #undef TRACEPOINT_EVENT_INSTANCE | |
90 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
91 | __tracepoint_provider_mismatch_##_provider(); | |
92 | ||
7ce6b21d PW |
93 | static inline lttng_ust_notrace |
94 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void); | |
e8bd1da7 | 95 | static inline |
1c324e59 MD |
96 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void) |
97 | { | |
98 | #include TRACEPOINT_INCLUDE | |
99 | } | |
100 | ||
f56cd1d5 MD |
101 | /* |
102 | * Stage 0.1 of tracepoint event generation. | |
103 | * | |
104 | * Check that each TRACEPOINT_EVENT provider:name does not exceed the | |
105 | * tracepoint name length limit. | |
106 | */ | |
107 | ||
108 | /* Reset all macros within TRACEPOINT_EVENT */ | |
109 | #include <lttng/ust-tracepoint-event-reset.h> | |
110 | ||
111 | #undef TRACEPOINT_EVENT_INSTANCE | |
112 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
113 | static const char \ | |
114 | __tp_name_len_check##_provider##___##_name[LTTNG_UST_SYM_NAME_LEN] \ | |
115 | __attribute__((unused)) = \ | |
116 | #_provider ":" #_name; | |
117 | ||
118 | #include TRACEPOINT_INCLUDE | |
119 | ||
c785c634 MD |
120 | /* |
121 | * Stage 0.9 of tracepoint event generation | |
122 | * | |
123 | * Unfolding the enums | |
124 | */ | |
125 | #include <lttng/ust-tracepoint-event-reset.h> | |
126 | ||
127 | /* Enumeration entry (single value) */ | |
128 | #undef ctf_enum_value | |
129 | #define ctf_enum_value(_string, _value) \ | |
130 | { _value, _value, _string }, | |
131 | ||
132 | /* Enumeration entry (range) */ | |
133 | #undef ctf_enum_range | |
134 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
135 | { _range_start, _range_end, _string }, | |
136 | ||
137 | #undef TP_ENUM_VALUES | |
138 | #define TP_ENUM_VALUES(...) \ | |
139 | __VA_ARGS__ | |
140 | ||
141 | #undef TRACEPOINT_ENUM | |
142 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
143 | const struct lttng_enum_entry __enum_values__##_provider##_##_name[] = { \ | |
144 | _values \ | |
145 | }; | |
146 | ||
147 | #include TRACEPOINT_INCLUDE | |
148 | ||
1c324e59 MD |
149 | /* |
150 | * Stage 1 of tracepoint event generation. | |
151 | * | |
152 | * Create event field type metadata section. | |
153 | * Each event produce an array of fields. | |
154 | */ | |
155 | ||
156 | /* Reset all macros within TRACEPOINT_EVENT */ | |
157 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
158 | #include <lttng/ust-tracepoint-event-write.h> |
159 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 160 | |
4774c8f3 | 161 | #undef _ctf_integer_ext |
180901e6 | 162 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
163 | { \ |
164 | .name = #_item, \ | |
165 | .type = __type_integer(_type, _byte_order, _base, none),\ | |
180901e6 | 166 | .nowrite = _nowrite, \ |
1c324e59 MD |
167 | }, |
168 | ||
4774c8f3 | 169 | #undef _ctf_float |
180901e6 | 170 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
171 | { \ |
172 | .name = #_item, \ | |
173 | .type = __type_float(_type), \ | |
180901e6 | 174 | .nowrite = _nowrite, \ |
1c324e59 MD |
175 | }, |
176 | ||
4774c8f3 | 177 | #undef _ctf_array_encoded |
180901e6 | 178 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
179 | { \ |
180 | .name = #_item, \ | |
181 | .type = \ | |
182 | { \ | |
183 | .atype = atype_array, \ | |
46d52200 | 184 | .u = \ |
1c324e59 | 185 | { \ |
46d52200 ZT |
186 | .array = \ |
187 | { \ | |
188 | .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \ | |
189 | .length = _length, \ | |
190 | } \ | |
191 | } \ | |
1c324e59 | 192 | }, \ |
180901e6 | 193 | .nowrite = _nowrite, \ |
1c324e59 MD |
194 | }, |
195 | ||
4774c8f3 | 196 | #undef _ctf_sequence_encoded |
f968510a PP |
197 | #define _ctf_sequence_encoded(_type, _item, _src, \ |
198 | _length_type, _src_length, _encoding, _nowrite, \ | |
199 | _elem_type_base) \ | |
1c324e59 MD |
200 | { \ |
201 | .name = #_item, \ | |
202 | .type = \ | |
203 | { \ | |
204 | .atype = atype_sequence, \ | |
46d52200 | 205 | .u = \ |
1c324e59 | 206 | { \ |
46d52200 ZT |
207 | .sequence = \ |
208 | { \ | |
209 | .length_type = __type_integer(_length_type, BYTE_ORDER, 10, none), \ | |
f968510a | 210 | .elem_type = __type_integer(_type, BYTE_ORDER, _elem_type_base, _encoding), \ |
46d52200 | 211 | }, \ |
1c324e59 MD |
212 | }, \ |
213 | }, \ | |
180901e6 | 214 | .nowrite = _nowrite, \ |
1c324e59 MD |
215 | }, |
216 | ||
4774c8f3 | 217 | #undef _ctf_string |
180901e6 | 218 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
219 | { \ |
220 | .name = #_item, \ | |
221 | .type = \ | |
222 | { \ | |
223 | .atype = atype_string, \ | |
46d52200 ZT |
224 | .u = \ |
225 | { \ | |
226 | .basic = { .string = { .encoding = lttng_encode_UTF8 } } \ | |
227 | }, \ | |
1c324e59 | 228 | }, \ |
180901e6 | 229 | .nowrite = _nowrite, \ |
1c324e59 MD |
230 | }, |
231 | ||
c785c634 MD |
232 | #undef _ctf_enum |
233 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
234 | { \ | |
235 | .name = #_item, \ | |
236 | .type = { \ | |
237 | .atype = atype_enum, \ | |
238 | .u = { \ | |
239 | .basic = { \ | |
240 | .enumeration = { \ | |
241 | .desc = &__enum_##_provider##_##_name, \ | |
242 | .container_type = { \ | |
243 | .size = sizeof(_type) * CHAR_BIT, \ | |
244 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ | |
245 | .signedness = lttng_is_signed_type(_type), \ | |
246 | .reverse_byte_order = 0, \ | |
247 | .base = 10, \ | |
248 | .encoding = lttng_encode_none, \ | |
249 | }, \ | |
250 | }, \ | |
251 | }, \ | |
252 | }, \ | |
253 | }, \ | |
254 | .nowrite = _nowrite, \ | |
255 | }, | |
256 | ||
1c324e59 | 257 | #undef TP_FIELDS |
2eda209b | 258 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ |
1c324e59 MD |
259 | |
260 | #undef TRACEPOINT_EVENT_CLASS | |
261 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
262 | static const struct lttng_event_field __event_fields___##_provider##___##_name[] = { \ | |
263 | _fields \ | |
264 | }; | |
265 | ||
c785c634 MD |
266 | #undef TRACEPOINT_ENUM |
267 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
268 | static const struct lttng_enum_desc __enum_##_provider##_##_name = { \ | |
269 | .name = #_provider "_" #_name, \ | |
270 | .entries = __enum_values__##_provider##_##_name, \ | |
271 | .nr_entries = _TP_ARRAY_SIZE(__enum_values__##_provider##_##_name), \ | |
272 | }; | |
273 | ||
1c324e59 MD |
274 | #include TRACEPOINT_INCLUDE |
275 | ||
276 | /* | |
277 | * Stage 2 of tracepoint event generation. | |
278 | * | |
279 | * Create probe callback prototypes. | |
280 | */ | |
281 | ||
282 | /* Reset all macros within TRACEPOINT_EVENT */ | |
283 | #include <lttng/ust-tracepoint-event-reset.h> | |
284 | ||
285 | #undef TP_ARGS | |
2eda209b | 286 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
287 | |
288 | #undef TRACEPOINT_EVENT_CLASS | |
289 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
290 | static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); | |
291 | ||
292 | #include TRACEPOINT_INCLUDE | |
293 | ||
294 | /* | |
c785c634 | 295 | * Stage 3.0 of tracepoint event generation. |
1c324e59 | 296 | * |
1c324e59 MD |
297 | * Create static inline function that calculates event size. |
298 | */ | |
299 | ||
300 | /* Reset all macros within TRACEPOINT_EVENT */ | |
301 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 302 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 303 | |
4774c8f3 | 304 | #undef _ctf_integer_ext |
180901e6 | 305 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
306 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
307 | __event_len += sizeof(_type); | |
308 | ||
4774c8f3 | 309 | #undef _ctf_float |
180901e6 | 310 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
311 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
312 | __event_len += sizeof(_type); | |
313 | ||
4774c8f3 | 314 | #undef _ctf_array_encoded |
180901e6 | 315 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
316 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
317 | __event_len += sizeof(_type) * (_length); | |
318 | ||
4774c8f3 | 319 | #undef _ctf_sequence_encoded |
f968510a PP |
320 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ |
321 | _src_length, _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
322 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
323 | __event_len += sizeof(_length_type); \ | |
324 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
325 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ | |
326 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
327 | __dynamic_len_idx++; | |
328 | ||
4774c8f3 | 329 | #undef _ctf_string |
180901e6 | 330 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
331 | __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1; |
332 | ||
c785c634 MD |
333 | #undef _ctf_enum |
334 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
335 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
336 | ||
1c324e59 | 337 | #undef TP_ARGS |
2eda209b | 338 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
339 | |
340 | #undef TP_FIELDS | |
2eda209b | 341 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
342 | |
343 | #undef TRACEPOINT_EVENT_CLASS | |
a8909ba5 PW |
344 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ |
345 | static inline lttng_ust_notrace \ | |
346 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)); \ | |
347 | static inline \ | |
348 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
349 | { \ |
350 | size_t __event_len = 0; \ | |
351 | unsigned int __dynamic_len_idx = 0; \ | |
352 | \ | |
353 | if (0) \ | |
354 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
355 | _fields \ | |
356 | return __event_len; \ | |
357 | } | |
358 | ||
359 | #include TRACEPOINT_INCLUDE | |
360 | ||
1ddfd641 MD |
361 | /* |
362 | * Stage 3.1 of tracepoint event generation. | |
363 | * | |
364 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 365 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
366 | */ |
367 | ||
368 | /* Reset all macros within TRACEPOINT_EVENT */ | |
369 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
370 | #include <lttng/ust-tracepoint-event-write.h> |
371 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 372 | |
4774c8f3 | 373 | #undef _ctf_integer_ext |
180901e6 | 374 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
fa099471 | 375 | if (lttng_is_signed_type(_type)) { \ |
3ebeea0d MD |
376 | int64_t __ctf_tmp_int64; \ |
377 | switch (sizeof(_type)) { \ | |
378 | case 1: \ | |
379 | { \ | |
380 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
381 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
382 | break; \ | |
383 | } \ | |
384 | case 2: \ | |
385 | { \ | |
386 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
387 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
388 | break; \ | |
389 | } \ | |
390 | case 4: \ | |
391 | { \ | |
392 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
393 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
394 | break; \ | |
395 | } \ | |
396 | case 8: \ | |
397 | { \ | |
398 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
399 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
400 | break; \ | |
401 | } \ | |
402 | default: \ | |
403 | abort(); \ | |
404 | }; \ | |
fa099471 MD |
405 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ |
406 | } else { \ | |
3ebeea0d MD |
407 | uint64_t __ctf_tmp_uint64; \ |
408 | switch (sizeof(_type)) { \ | |
409 | case 1: \ | |
410 | { \ | |
411 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
412 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
413 | break; \ | |
414 | } \ | |
415 | case 2: \ | |
416 | { \ | |
417 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
418 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
419 | break; \ | |
420 | } \ | |
421 | case 4: \ | |
422 | { \ | |
423 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
424 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
425 | break; \ | |
426 | } \ | |
427 | case 8: \ | |
428 | { \ | |
429 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
430 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
431 | break; \ | |
432 | } \ | |
433 | default: \ | |
434 | abort(); \ | |
435 | }; \ | |
fa099471 MD |
436 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ |
437 | } \ | |
1ddfd641 MD |
438 | __stack_data += sizeof(int64_t); |
439 | ||
4774c8f3 | 440 | #undef _ctf_float |
180901e6 | 441 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
442 | { \ |
443 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
444 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
445 | __stack_data += sizeof(double); \ | |
446 | } | |
1ddfd641 | 447 | |
4774c8f3 | 448 | #undef _ctf_array_encoded |
180901e6 | 449 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
fa099471 MD |
450 | { \ |
451 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 452 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
453 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
454 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
455 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
456 | __stack_data += sizeof(void *); \ | |
fa099471 | 457 | } |
1ddfd641 | 458 | |
4774c8f3 MD |
459 | #undef _ctf_sequence_encoded |
460 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
f968510a | 461 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
fa099471 MD |
462 | { \ |
463 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 464 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
465 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
466 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
467 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
468 | __stack_data += sizeof(void *); \ | |
fa099471 | 469 | } |
1ddfd641 | 470 | |
4774c8f3 | 471 | #undef _ctf_string |
180901e6 | 472 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 473 | { \ |
59034aab | 474 | const void *__ctf_tmp_ptr = (_src); \ |
b1239ad6 MD |
475 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
476 | __stack_data += sizeof(void *); \ | |
fa099471 | 477 | } |
1ddfd641 | 478 | |
c785c634 MD |
479 | #undef _ctf_enum |
480 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
481 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
482 | ||
1ddfd641 MD |
483 | #undef TP_ARGS |
484 | #define TP_ARGS(...) __VA_ARGS__ | |
485 | ||
486 | #undef TP_FIELDS | |
487 | #define TP_FIELDS(...) __VA_ARGS__ | |
488 | ||
489 | #undef TRACEPOINT_EVENT_CLASS | |
490 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
491 | static inline \ | |
492 | void __event_prepare_filter_stack__##_provider##___##_name(char *__stack_data,\ | |
493 | _TP_ARGS_DATA_PROTO(_args)) \ | |
494 | { \ | |
495 | _fields \ | |
496 | } | |
497 | ||
498 | #include TRACEPOINT_INCLUDE | |
499 | ||
1c324e59 | 500 | /* |
df854e41 | 501 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
502 | * |
503 | * Create static inline function that calculates event payload alignment. | |
504 | */ | |
505 | ||
506 | /* Reset all macros within TRACEPOINT_EVENT */ | |
507 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 508 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 509 | |
4774c8f3 | 510 | #undef _ctf_integer_ext |
180901e6 | 511 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
512 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
513 | ||
4774c8f3 | 514 | #undef _ctf_float |
180901e6 | 515 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
516 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
517 | ||
4774c8f3 | 518 | #undef _ctf_array_encoded |
180901e6 | 519 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
520 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
521 | ||
4774c8f3 | 522 | #undef _ctf_sequence_encoded |
f968510a PP |
523 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ |
524 | _src_length, _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
525 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
526 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); | |
527 | ||
4774c8f3 | 528 | #undef _ctf_string |
180901e6 | 529 | #define _ctf_string(_item, _src, _nowrite) |
1c324e59 | 530 | |
c785c634 MD |
531 | #undef _ctf_enum |
532 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
533 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
534 | ||
1c324e59 | 535 | #undef TP_ARGS |
2eda209b | 536 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
537 | |
538 | #undef TP_FIELDS | |
2eda209b | 539 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
540 | |
541 | #undef TRACEPOINT_EVENT_CLASS | |
542 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
543 | static inline lttng_ust_notrace \ |
544 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)); \ | |
1c324e59 MD |
545 | static inline \ |
546 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
547 | { \ | |
548 | size_t __event_align = 1; \ | |
549 | _fields \ | |
550 | return __event_align; \ | |
551 | } | |
552 | ||
553 | #include TRACEPOINT_INCLUDE | |
554 | ||
555 | ||
556 | /* | |
df854e41 | 557 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
558 | * |
559 | * Create the probe function. This function calls event size calculation | |
560 | * and writes event data into the buffer. | |
561 | */ | |
562 | ||
563 | /* Reset all macros within TRACEPOINT_EVENT */ | |
564 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 565 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 566 | |
4774c8f3 | 567 | #undef _ctf_integer_ext |
180901e6 | 568 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
569 | { \ |
570 | _type __tmp = (_src); \ | |
571 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
572 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
573 | } | |
574 | ||
4774c8f3 | 575 | #undef _ctf_float |
180901e6 | 576 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
577 | { \ |
578 | _type __tmp = (_src); \ | |
579 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
580 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
581 | } | |
582 | ||
4774c8f3 | 583 | #undef _ctf_array_encoded |
180901e6 | 584 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
585 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
586 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); | |
587 | ||
4774c8f3 MD |
588 | #undef _ctf_sequence_encoded |
589 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
f968510a | 590 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 | 591 | { \ |
d71b57b9 | 592 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
1c324e59 MD |
593 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
594 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
595 | } \ | |
596 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
597 | __chan->ops->event_write(&__ctx, _src, \ | |
598 | sizeof(_type) * __get_dynamic_len(dest)); | |
599 | ||
a44c74d9 MD |
600 | /* |
601 | * __chan->ops->u.has_strcpy is a flag letting us know if the LTTng-UST | |
602 | * tracepoint provider ABI implements event_strcpy. This dynamic check | |
603 | * can be removed when the tracepoint provider ABI moves to 2. | |
604 | */ | |
605 | #if (LTTNG_UST_PROVIDER_MAJOR > 1) | |
606 | #error "Tracepoint probe provider major version has changed. Please remove dynamic check for has_strcpy." | |
607 | #endif | |
608 | ||
4774c8f3 | 609 | #undef _ctf_string |
180901e6 | 610 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 | 611 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
a44c74d9 MD |
612 | if (__chan->ops->u.has_strcpy) \ |
613 | __chan->ops->event_strcpy(&__ctx, _src, \ | |
614 | __get_dynamic_len(dest)); \ | |
615 | else \ | |
616 | __chan->ops->event_write(&__ctx, _src, \ | |
617 | __get_dynamic_len(dest)); | |
1c324e59 | 618 | |
c785c634 MD |
619 | #undef _ctf_enum |
620 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
621 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
622 | ||
1c324e59 MD |
623 | /* Beware: this get len actually consumes the len value */ |
624 | #undef __get_dynamic_len | |
d71b57b9 | 625 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 MD |
626 | |
627 | #undef TP_ARGS | |
2eda209b | 628 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
629 | |
630 | #undef TP_FIELDS | |
2eda209b | 631 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 632 | |
95c25348 PW |
633 | /* |
634 | * For state dump, check that "session" argument (mandatory) matches the | |
635 | * session this event belongs to. Ensures that we write state dump data only | |
636 | * into the started session, not into all sessions. | |
637 | */ | |
638 | #undef _TP_SESSION_CHECK | |
639 | #ifdef TP_SESSION_CHECK | |
640 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
641 | #else /* TP_SESSION_CHECK */ | |
642 | #define _TP_SESSION_CHECK(session, csession) 1 | |
643 | #endif /* TP_SESSION_CHECK */ | |
644 | ||
97904b41 MD |
645 | /* |
646 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
647 | * corruption on 32-bit PowerPC. Disable this feature on that | |
648 | * architecture for now by always using the NULL value for the ip | |
649 | * context. | |
650 | */ | |
5dadb547 MD |
651 | #undef _TP_IP_PARAM |
652 | #ifdef TP_IP_PARAM | |
e1d09f9e | 653 | #define _TP_IP_PARAM(x) (x) |
5dadb547 | 654 | #else /* TP_IP_PARAM */ |
97904b41 MD |
655 | |
656 | #if defined(__PPC__) && !defined(__PPC64__) | |
657 | #define _TP_IP_PARAM(x) NULL | |
658 | #else /* #if defined(__PPC__) && !defined(__PPC64__) */ | |
e1d09f9e | 659 | #define _TP_IP_PARAM(x) __builtin_return_address(0) |
97904b41 MD |
660 | #endif /* #else #if defined(__PPC__) && !defined(__PPC64__) */ |
661 | ||
5dadb547 MD |
662 | #endif /* TP_IP_PARAM */ |
663 | ||
1ddfd641 MD |
664 | /* |
665 | * Using twice size for filter stack data to hold size and pointer for | |
666 | * each field (worse case). For integers, max size required is 64-bit. | |
667 | * Same for double-precision floats. Those fit within | |
668 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 669 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 670 | */ |
1c324e59 MD |
671 | #undef TRACEPOINT_EVENT_CLASS |
672 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
673 | static lttng_ust_notrace \ |
674 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
675 | static \ | |
676 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 677 | { \ |
53569322 | 678 | struct lttng_event *__event = (struct lttng_event *) __tp_data; \ |
7dd08bec | 679 | struct lttng_channel *__chan = __event->chan; \ |
f280cb51 | 680 | struct lttng_ust_lib_ring_buffer_ctx __ctx; \ |
53569322 | 681 | struct lttng_stack_ctx __lttng_ctx; \ |
1c324e59 MD |
682 | size_t __event_len, __event_align; \ |
683 | size_t __dynamic_len_idx = 0; \ | |
d71b57b9 | 684 | union { \ |
1ddfd641 MD |
685 | size_t __dynamic_len[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \ |
686 | char __filter_stack_data[2 * sizeof(unsigned long) * _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \ | |
d71b57b9 | 687 | } __stackvar; \ |
1c324e59 MD |
688 | int __ret; \ |
689 | \ | |
690 | if (0) \ | |
691 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
95c25348 PW |
692 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
693 | return; \ | |
1c324e59 MD |
694 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->session->active))) \ |
695 | return; \ | |
696 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->enabled))) \ | |
697 | return; \ | |
698 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
699 | return; \ | |
1b436e01 MD |
700 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
701 | return; \ | |
e58095ef | 702 | if (caa_unlikely(!cds_list_empty(&__event->bytecode_runtime_head))) { \ |
f488575f | 703 | struct lttng_bytecode_runtime *bc_runtime; \ |
dcdeaff0 | 704 | int __filter_record = __event->has_enablers_without_bytecode; \ |
f488575f | 705 | \ |
1ddfd641 | 706 | __event_prepare_filter_stack__##_provider##___##_name(__stackvar.__filter_stack_data, \ |
f488575f | 707 | _TP_ARGS_DATA_VAR(_args)); \ |
000b8662 | 708 | tp_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
61ce3223 | 709 | if (caa_unlikely(bc_runtime->filter(bc_runtime, \ |
8a92ed2a MD |
710 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
711 | __filter_record = 1; \ | |
f488575f | 712 | } \ |
8a92ed2a | 713 | if (caa_likely(!__filter_record)) \ |
61ce3223 | 714 | return; \ |
1ddfd641 MD |
715 | } \ |
716 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
1c324e59 MD |
717 | _TP_ARGS_DATA_VAR(_args)); \ |
718 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
53569322 MD |
719 | memset(&__lttng_ctx, 0, sizeof(__lttng_ctx)); \ |
720 | __lttng_ctx.event = __event; \ | |
721 | __lttng_ctx.chan_ctx = tp_rcu_dereference_bp(__chan->ctx); \ | |
722 | __lttng_ctx.event_ctx = tp_rcu_dereference_bp(__event->ctx); \ | |
1c324e59 | 723 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
53569322 | 724 | __event_align, -1, __chan->handle, &__lttng_ctx); \ |
e1d09f9e | 725 | __ctx.ip = _TP_IP_PARAM(TP_IP_PARAM); \ |
1c324e59 MD |
726 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
727 | if (__ret < 0) \ | |
728 | return; \ | |
729 | _fields \ | |
730 | __chan->ops->event_commit(&__ctx); \ | |
731 | } | |
732 | ||
733 | #include TRACEPOINT_INCLUDE | |
734 | ||
735 | #undef __get_dynamic_len | |
736 | ||
68755429 MD |
737 | /* |
738 | * Stage 5.1 of tracepoint event generation. | |
739 | * | |
740 | * Create probe signature | |
741 | */ | |
742 | ||
743 | /* Reset all macros within TRACEPOINT_EVENT */ | |
744 | #include <lttng/ust-tracepoint-event-reset.h> | |
745 | ||
746 | #undef TP_ARGS | |
2eda209b | 747 | #define TP_ARGS(...) __VA_ARGS__ |
9eb06182 MD |
748 | |
749 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 MD |
750 | |
751 | #undef TRACEPOINT_EVENT_CLASS | |
752 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
753 | const char __tp_event_signature___##_provider##___##_name[] = \ | |
9eb06182 | 754 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
755 | |
756 | #include TRACEPOINT_INCLUDE | |
757 | ||
9eb06182 MD |
758 | #undef _TP_EXTRACT_STRING2 |
759 | ||
05ceaafd | 760 | /* |
882a56d7 | 761 | * Stage 6 of tracepoint event generation. |
1c324e59 | 762 | * |
df854e41 MD |
763 | * Tracepoint loglevel mapping definition generation. We generate a |
764 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
765 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
766 | * the compiler will complain. | |
05ceaafd MD |
767 | */ |
768 | ||
769 | /* Reset all macros within TRACEPOINT_EVENT */ | |
770 | #include <lttng/ust-tracepoint-event-reset.h> | |
771 | ||
772 | #undef TRACEPOINT_LOGLEVEL | |
457a6b58 MD |
773 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
774 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
775 | static const int *_loglevel___##__provider##___##__name = \ | |
776 | &_loglevel_value___##__provider##___##__name; | |
df854e41 MD |
777 | |
778 | #include TRACEPOINT_INCLUDE | |
779 | ||
6ddc916d MD |
780 | /* |
781 | * Stage 6.1 of tracepoint event generation. | |
782 | * | |
783 | * Tracepoint UML URI info. | |
784 | */ | |
785 | ||
786 | /* Reset all macros within TRACEPOINT_EVENT */ | |
787 | #include <lttng/ust-tracepoint-event-reset.h> | |
788 | ||
789 | #undef TRACEPOINT_MODEL_EMF_URI | |
790 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
791 | static const char *_model_emf_uri___##__provider##___##__name = __uri; | |
792 | ||
793 | #include TRACEPOINT_INCLUDE | |
794 | ||
df854e41 | 795 | /* |
882a56d7 | 796 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
797 | * |
798 | * Create events description structures. We use a weakref because | |
799 | * loglevels are optional. If not declared, the event will point to the | |
800 | * a loglevel that contains NULL. | |
801 | */ | |
802 | ||
803 | /* Reset all macros within TRACEPOINT_EVENT */ | |
804 | #include <lttng/ust-tracepoint-event-reset.h> | |
805 | ||
806 | #undef TRACEPOINT_EVENT_INSTANCE | |
807 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
808 | static const int * \ |
809 | __ref_loglevel___##_provider##___##_name \ | |
810 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
811 | static const char * \ |
812 | __ref_model_emf_uri___##_provider##___##_name \ | |
813 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
df854e41 | 814 | const struct lttng_event_desc __event_desc___##_provider##_##_name = { \ |
df854e41 | 815 | .name = #_provider ":" #_name, \ |
fbdeb5ec | 816 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template,\ |
46d52200 ZT |
817 | .ctx = NULL, \ |
818 | .fields = __event_fields___##_provider##___##_template, \ | |
df854e41 | 819 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template), \ |
882a56d7 | 820 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 821 | .signature = __tp_event_signature___##_provider##___##_template, \ |
c785c634 MD |
822 | .u = { \ |
823 | .ext = { \ | |
824 | .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \ | |
825 | }, \ | |
826 | }, \ | |
df854e41 MD |
827 | }; |
828 | ||
829 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 830 | |
df854e41 | 831 | /* |
882a56d7 | 832 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
833 | * |
834 | * Create array of events. | |
835 | */ | |
836 | ||
837 | /* Reset all macros within TRACEPOINT_EVENT */ | |
838 | #include <lttng/ust-tracepoint-event-reset.h> | |
839 | ||
840 | #undef TRACEPOINT_EVENT_INSTANCE | |
841 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
842 | &__event_desc___##_provider##_##_name, | |
843 | ||
844 | static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { | |
05ceaafd MD |
845 | #include TRACEPOINT_INCLUDE |
846 | }; | |
847 | ||
df854e41 | 848 | |
05ceaafd | 849 | /* |
882a56d7 | 850 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
851 | * |
852 | * Create a toplevel descriptor for the whole probe. | |
853 | */ | |
854 | ||
855 | /* non-const because list head will be modified when registered. */ | |
856 | static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { | |
df854e41 | 857 | .provider = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd MD |
858 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
859 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)), | |
46d52200 ZT |
860 | .head = { NULL, NULL }, |
861 | .lazy_init_head = { NULL, NULL }, | |
862 | .lazy = 0, | |
71d31690 MD |
863 | .major = LTTNG_UST_PROVIDER_MAJOR, |
864 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
865 | }; |
866 | ||
f0cc794d MD |
867 | static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER); |
868 | ||
05ceaafd | 869 | /* |
882a56d7 | 870 | * Stage 9 of tracepoint event generation. |
05ceaafd | 871 | * |
1c324e59 | 872 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
873 | * |
874 | * Generate the constructor as an externally visible symbol for use when | |
875 | * linking the probe statically. | |
f0cc794d MD |
876 | * |
877 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
878 | */ |
879 | ||
880 | /* Reset all macros within TRACEPOINT_EVENT */ | |
881 | #include <lttng/ust-tracepoint-event-reset.h> | |
a8909ba5 PW |
882 | static void lttng_ust_notrace __attribute__((constructor)) |
883 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void); | |
884 | static void | |
1c324e59 MD |
885 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) |
886 | { | |
887 | int ret; | |
888 | ||
f0cc794d MD |
889 | if (_TP_COMBINE_TOKENS(__probe_register_refcount___, |
890 | TRACEPOINT_PROVIDER)++) { | |
891 | return; | |
892 | } | |
e8bd1da7 MD |
893 | /* |
894 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
895 | * static inline function that ensures every probe PROVIDER | |
896 | * argument match the provider within which they appear. It | |
897 | * calls empty static inline functions, and therefore has no | |
898 | * runtime effect. However, if it detects an error, a linker | |
899 | * error will appear. | |
900 | */ | |
901 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
7dd08bec | 902 | ret = lttng_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
7d381d6e MD |
903 | if (ret) { |
904 | fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe. Duplicate registration of tracepoint probes having the same name is not allowed.\n", ret); | |
905 | abort(); | |
906 | } | |
1c324e59 MD |
907 | } |
908 | ||
a8909ba5 PW |
909 | static void lttng_ust_notrace __attribute__((destructor)) |
910 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void); | |
911 | static void | |
1c324e59 MD |
912 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) |
913 | { | |
f0cc794d MD |
914 | if (--_TP_COMBINE_TOKENS(__probe_register_refcount___, |
915 | TRACEPOINT_PROVIDER)) { | |
916 | return; | |
917 | } | |
7dd08bec | 918 | lttng_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 | 919 | } |
628e1d81 MD |
920 | |
921 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER); |