Commit | Line | Data |
---|---|---|
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 | ||
fb31eb73 | 23 | #include <stdint.h> |
1c324e59 | 24 | #include <stdio.h> |
7d381d6e | 25 | #include <stdlib.h> |
1c324e59 | 26 | #include <urcu/compiler.h> |
f488575f | 27 | #include <urcu/rculist.h> |
1c324e59 | 28 | #include <lttng/ust-events.h> |
1c324e59 | 29 | #include <lttng/ringbuffer-config.h> |
a8909ba5 | 30 | #include <lttng/ust-compiler.h> |
000b8662 | 31 | #include <lttng/tracepoint.h> |
3208818b | 32 | #include <lttng/ust-endian.h> |
44c72f10 | 33 | #include <string.h> |
1c324e59 | 34 | |
24a39530 PP |
35 | #define __LTTNG_UST_NULL_STRING "(null)" |
36 | ||
000b8662 MD |
37 | #undef tp_list_for_each_entry_rcu |
38 | #define tp_list_for_each_entry_rcu(pos, head, member) \ | |
39 | for (pos = cds_list_entry(tp_rcu_dereference_bp((head)->next), __typeof__(*pos), member); \ | |
40 | &pos->member != (head); \ | |
41 | pos = cds_list_entry(tp_rcu_dereference_bp(pos->member.next), __typeof__(*pos), member)) | |
42 | ||
1c324e59 MD |
43 | /* |
44 | * TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the | |
45 | * same arguments and having the same field layout. | |
46 | * | |
47 | * TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with | |
48 | * its own provider and name. It refers to a class (template). | |
49 | * | |
50 | * TRACEPOINT_EVENT declared both a class and an instance and does a | |
51 | * direct mapping from the instance to the class. | |
52 | */ | |
53 | ||
54 | #undef TRACEPOINT_EVENT | |
55 | #define TRACEPOINT_EVENT(_provider, _name, _args, _fields) \ | |
56 | TRACEPOINT_EVENT_CLASS(_provider, _name, \ | |
57 | _TP_PARAMS(_args), \ | |
58 | _TP_PARAMS(_fields)) \ | |
59 | TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \ | |
68755429 | 60 | _TP_PARAMS(_args)) |
1c324e59 MD |
61 | |
62 | /* Helpers */ | |
63 | #define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) | |
64 | ||
65 | #define _tp_max_t(type, x, y) \ | |
66 | ({ \ | |
67 | type __max1 = (x); \ | |
68 | type __max2 = (y); \ | |
69 | __max1 > __max2 ? __max1: __max2; \ | |
70 | }) | |
71 | ||
72 | /* | |
73 | * Stage 0 of tracepoint event generation. | |
74 | * | |
75 | * Check that each TRACEPOINT_EVENT provider argument match the | |
76 | * TRACEPOINT_PROVIDER by creating dummy callbacks. | |
77 | */ | |
78 | ||
79 | /* Reset all macros within TRACEPOINT_EVENT */ | |
80 | #include <lttng/ust-tracepoint-event-reset.h> | |
81 | ||
7ce6b21d PW |
82 | static inline lttng_ust_notrace |
83 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void); | |
1c324e59 MD |
84 | static inline |
85 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void) | |
86 | { | |
87 | } | |
88 | ||
89 | #undef TRACEPOINT_EVENT_CLASS | |
90 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
91 | __tracepoint_provider_mismatch_##_provider(); | |
92 | ||
93 | #undef TRACEPOINT_EVENT_INSTANCE | |
94 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
95 | __tracepoint_provider_mismatch_##_provider(); | |
96 | ||
7ce6b21d PW |
97 | static inline lttng_ust_notrace |
98 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void); | |
e8bd1da7 | 99 | static inline |
1c324e59 MD |
100 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void) |
101 | { | |
102 | #include TRACEPOINT_INCLUDE | |
103 | } | |
104 | ||
f56cd1d5 MD |
105 | /* |
106 | * Stage 0.1 of tracepoint event generation. | |
107 | * | |
108 | * Check that each TRACEPOINT_EVENT provider:name does not exceed the | |
109 | * tracepoint name length limit. | |
110 | */ | |
111 | ||
112 | /* Reset all macros within TRACEPOINT_EVENT */ | |
113 | #include <lttng/ust-tracepoint-event-reset.h> | |
114 | ||
115 | #undef TRACEPOINT_EVENT_INSTANCE | |
116 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
117 | static const char \ | |
118 | __tp_name_len_check##_provider##___##_name[LTTNG_UST_SYM_NAME_LEN] \ | |
119 | __attribute__((unused)) = \ | |
120 | #_provider ":" #_name; | |
121 | ||
122 | #include TRACEPOINT_INCLUDE | |
123 | ||
c75c0422 MD |
124 | /* |
125 | * Stage 0.2 of tracepoint event generation. | |
126 | * | |
127 | * Create dummy trace prototypes for each event class, and for each used | |
128 | * template. This will allow checking whether the prototypes from the | |
129 | * class and the instance using the class actually match. | |
130 | */ | |
131 | ||
132 | /* Reset all macros within TRACEPOINT_EVENT */ | |
133 | #include <lttng/ust-tracepoint-event-reset.h> | |
134 | ||
135 | #undef TP_ARGS | |
136 | #define TP_ARGS(...) __VA_ARGS__ | |
137 | ||
138 | #undef TRACEPOINT_EVENT_INSTANCE | |
139 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
140 | void __event_template_proto___##_provider##___##_template(_TP_ARGS_DATA_PROTO(_args)); | |
141 | ||
142 | #undef TRACEPOINT_EVENT_CLASS | |
143 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
144 | void __event_template_proto___##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); | |
145 | ||
146 | #include TRACEPOINT_INCLUDE | |
147 | ||
c785c634 MD |
148 | /* |
149 | * Stage 0.9 of tracepoint event generation | |
150 | * | |
151 | * Unfolding the enums | |
152 | */ | |
153 | #include <lttng/ust-tracepoint-event-reset.h> | |
154 | ||
155 | /* Enumeration entry (single value) */ | |
156 | #undef ctf_enum_value | |
157 | #define ctf_enum_value(_string, _value) \ | |
a6f80644 MD |
158 | { \ |
159 | .start = { \ | |
a6f80644 MD |
160 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ |
161 | (long long) (_value) : (_value), \ | |
2c3f4c28 | 162 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
163 | }, \ |
164 | .end = { \ | |
a6f80644 MD |
165 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ |
166 | (long long) (_value) : (_value), \ | |
2c3f4c28 | 167 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
168 | }, \ |
169 | .string = (_string), \ | |
170 | }, | |
c785c634 MD |
171 | |
172 | /* Enumeration entry (range) */ | |
173 | #undef ctf_enum_range | |
174 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
a6f80644 MD |
175 | { \ |
176 | .start = { \ | |
a6f80644 MD |
177 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ |
178 | (long long) (_range_start) : (_range_start), \ | |
2c3f4c28 | 179 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ |
a6f80644 MD |
180 | }, \ |
181 | .end = { \ | |
a6f80644 MD |
182 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ |
183 | (long long) (_range_end) : (_range_end), \ | |
2c3f4c28 | 184 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ |
a6f80644 MD |
185 | }, \ |
186 | .string = (_string), \ | |
187 | }, | |
c785c634 | 188 | |
3e762260 PP |
189 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
190 | #undef ctf_enum_auto | |
191 | #define ctf_enum_auto(_string) \ | |
192 | { \ | |
193 | .start = { \ | |
194 | .value = -1ULL, \ | |
195 | .signedness = 0, \ | |
196 | }, \ | |
197 | .end = { \ | |
198 | .value = -1ULL, \ | |
199 | .signedness = 0, \ | |
200 | }, \ | |
201 | .string = (_string), \ | |
202 | .u = { \ | |
203 | .extra = { \ | |
204 | .options = LTTNG_ENUM_ENTRY_OPTION_IS_AUTO, \ | |
205 | }, \ | |
206 | }, \ | |
207 | }, | |
208 | ||
c785c634 MD |
209 | #undef TP_ENUM_VALUES |
210 | #define TP_ENUM_VALUES(...) \ | |
211 | __VA_ARGS__ | |
212 | ||
213 | #undef TRACEPOINT_ENUM | |
214 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
215 | const struct lttng_enum_entry __enum_values__##_provider##_##_name[] = { \ | |
216 | _values \ | |
1c80c909 | 217 | ctf_enum_value("", 0) /* Dummy, 0-len array forbidden by C99. */ \ |
c785c634 | 218 | }; |
2df82195 FD |
219 | #include TRACEPOINT_INCLUDE |
220 | ||
221 | /* | |
222 | * Stage 0.9.1 | |
223 | * Verifying array and sequence elements are of an integer type. | |
224 | */ | |
225 | ||
226 | /* Reset all macros within TRACEPOINT_EVENT */ | |
227 | #include <lttng/ust-tracepoint-event-reset.h> | |
228 | #include <lttng/ust-tracepoint-event-write.h> | |
229 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
230 | ||
231 | #undef _ctf_array_encoded | |
232 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ | |
233 | _length, _encoding, _nowrite, \ | |
234 | _elem_type_base) \ | |
235 | _lttng_array_element_type_is_supported(_type, _item) | |
236 | ||
237 | #undef _ctf_sequence_encoded | |
238 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ | |
239 | _length_type, _src_length, _encoding, _nowrite, \ | |
240 | _elem_type_base) \ | |
241 | _lttng_array_element_type_is_supported(_type, _item) | |
242 | ||
243 | #undef TP_FIELDS | |
244 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
245 | ||
246 | #undef TRACEPOINT_EVENT_CLASS | |
247 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
248 | _fields | |
c785c634 MD |
249 | |
250 | #include TRACEPOINT_INCLUDE | |
251 | ||
1c324e59 MD |
252 | /* |
253 | * Stage 1 of tracepoint event generation. | |
254 | * | |
255 | * Create event field type metadata section. | |
256 | * Each event produce an array of fields. | |
257 | */ | |
258 | ||
259 | /* Reset all macros within TRACEPOINT_EVENT */ | |
260 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
261 | #include <lttng/ust-tracepoint-event-write.h> |
262 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 263 | |
4774c8f3 | 264 | #undef _ctf_integer_ext |
180901e6 | 265 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
266 | { \ |
267 | .name = #_item, \ | |
268 | .type = __type_integer(_type, _byte_order, _base, none),\ | |
180901e6 | 269 | .nowrite = _nowrite, \ |
218deb69 MD |
270 | .u = { \ |
271 | .ext = { \ | |
272 | .nofilter = 0, \ | |
273 | }, \ | |
274 | }, \ | |
1c324e59 MD |
275 | }, |
276 | ||
4774c8f3 | 277 | #undef _ctf_float |
180901e6 | 278 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
279 | { \ |
280 | .name = #_item, \ | |
281 | .type = __type_float(_type), \ | |
180901e6 | 282 | .nowrite = _nowrite, \ |
218deb69 MD |
283 | .u = { \ |
284 | .ext = { \ | |
285 | .nofilter = 0, \ | |
286 | }, \ | |
287 | }, \ | |
1c324e59 MD |
288 | }, |
289 | ||
4774c8f3 | 290 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
291 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ |
292 | _length, _encoding, _nowrite, \ | |
293 | _elem_type_base) \ | |
1c324e59 MD |
294 | { \ |
295 | .name = #_item, \ | |
296 | .type = \ | |
297 | { \ | |
218deb69 | 298 | .atype = atype_array_nestable, \ |
46d52200 | 299 | .u = \ |
1c324e59 | 300 | { \ |
218deb69 | 301 | .array_nestable = \ |
46d52200 | 302 | { \ |
218deb69 MD |
303 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ |
304 | __type_integer(_type, _byte_order, _elem_type_base, _encoding)), \ | |
46d52200 | 305 | .length = _length, \ |
218deb69 | 306 | .alignment = 0, \ |
46d52200 ZT |
307 | } \ |
308 | } \ | |
1c324e59 | 309 | }, \ |
180901e6 | 310 | .nowrite = _nowrite, \ |
218deb69 MD |
311 | .u = { \ |
312 | .ext = { \ | |
313 | .nofilter = 0, \ | |
314 | }, \ | |
315 | }, \ | |
1c324e59 MD |
316 | }, |
317 | ||
4774c8f3 | 318 | #undef _ctf_sequence_encoded |
48d660d1 | 319 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ |
f968510a PP |
320 | _length_type, _src_length, _encoding, _nowrite, \ |
321 | _elem_type_base) \ | |
218deb69 MD |
322 | { \ |
323 | .name = "_" #_item "_length", \ | |
324 | .type = __type_integer(_length_type, BYTE_ORDER, 10, none), \ | |
325 | .nowrite = _nowrite, \ | |
326 | .u = { \ | |
327 | .ext = { \ | |
328 | .nofilter = 1, \ | |
329 | }, \ | |
330 | }, \ | |
331 | }, \ | |
1c324e59 MD |
332 | { \ |
333 | .name = #_item, \ | |
334 | .type = \ | |
335 | { \ | |
218deb69 | 336 | .atype = atype_sequence_nestable, \ |
46d52200 | 337 | .u = \ |
1c324e59 | 338 | { \ |
218deb69 | 339 | .sequence_nestable = \ |
46d52200 | 340 | { \ |
218deb69 MD |
341 | .length_name = "_" #_item "_length", \ |
342 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
343 | __type_integer(_type, _byte_order, _elem_type_base, _encoding)), \ | |
344 | .alignment = 0, \ | |
46d52200 | 345 | }, \ |
1c324e59 MD |
346 | }, \ |
347 | }, \ | |
180901e6 | 348 | .nowrite = _nowrite, \ |
218deb69 MD |
349 | .u = { \ |
350 | .ext = { \ | |
351 | .nofilter = 0, \ | |
352 | }, \ | |
353 | }, \ | |
1c324e59 MD |
354 | }, |
355 | ||
4774c8f3 | 356 | #undef _ctf_string |
180901e6 | 357 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
358 | { \ |
359 | .name = #_item, \ | |
360 | .type = \ | |
361 | { \ | |
362 | .atype = atype_string, \ | |
46d52200 ZT |
363 | .u = \ |
364 | { \ | |
218deb69 | 365 | .string = { .encoding = lttng_encode_UTF8 } \ |
46d52200 | 366 | }, \ |
1c324e59 | 367 | }, \ |
180901e6 | 368 | .nowrite = _nowrite, \ |
218deb69 MD |
369 | .u = { \ |
370 | .ext = { \ | |
371 | .nofilter = 0, \ | |
372 | }, \ | |
373 | }, \ | |
1c324e59 MD |
374 | }, |
375 | ||
c785c634 MD |
376 | #undef _ctf_enum |
377 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
378 | { \ | |
379 | .name = #_item, \ | |
380 | .type = { \ | |
218deb69 | 381 | .atype = atype_enum_nestable, \ |
c785c634 | 382 | .u = { \ |
218deb69 MD |
383 | .enum_nestable = { \ |
384 | .desc = &__enum_##_provider##_##_name, \ | |
385 | .container_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
386 | __type_integer(_type, BYTE_ORDER, 10, none)), \ | |
387 | }, \ | |
c785c634 MD |
388 | }, \ |
389 | }, \ | |
390 | .nowrite = _nowrite, \ | |
218deb69 MD |
391 | .u = { \ |
392 | .ext = { \ | |
393 | .nofilter = 0, \ | |
394 | }, \ | |
395 | }, \ | |
c785c634 MD |
396 | }, |
397 | ||
1c324e59 | 398 | #undef TP_FIELDS |
2eda209b | 399 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ |
1c324e59 MD |
400 | |
401 | #undef TRACEPOINT_EVENT_CLASS | |
402 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
403 | static const struct lttng_event_field __event_fields___##_provider##___##_name[] = { \ | |
404 | _fields \ | |
1c80c909 | 405 | ctf_integer(int, dummy, 0) /* Dummy, C99 forbids 0-len array. */ \ |
1c324e59 MD |
406 | }; |
407 | ||
c785c634 MD |
408 | #undef TRACEPOINT_ENUM |
409 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
410 | static const struct lttng_enum_desc __enum_##_provider##_##_name = { \ | |
411 | .name = #_provider "_" #_name, \ | |
412 | .entries = __enum_values__##_provider##_##_name, \ | |
1c80c909 | 413 | .nr_entries = _TP_ARRAY_SIZE(__enum_values__##_provider##_##_name) - 1, \ |
c785c634 MD |
414 | }; |
415 | ||
1c324e59 MD |
416 | #include TRACEPOINT_INCLUDE |
417 | ||
418 | /* | |
419 | * Stage 2 of tracepoint event generation. | |
420 | * | |
421 | * Create probe callback prototypes. | |
422 | */ | |
423 | ||
424 | /* Reset all macros within TRACEPOINT_EVENT */ | |
425 | #include <lttng/ust-tracepoint-event-reset.h> | |
426 | ||
427 | #undef TP_ARGS | |
2eda209b | 428 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
429 | |
430 | #undef TRACEPOINT_EVENT_CLASS | |
431 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
432 | static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); | |
433 | ||
434 | #include TRACEPOINT_INCLUDE | |
435 | ||
d8d2416d FD |
436 | /* |
437 | * Stage 2.1 of tracepoint event generation. | |
438 | * | |
439 | * Create probe event notifier callback prototypes. | |
440 | */ | |
441 | ||
442 | /* Reset all macros within TRACEPOINT_EVENT */ | |
443 | #include <lttng/ust-tracepoint-event-reset.h> | |
444 | ||
445 | #undef TP_ARGS | |
446 | #define TP_ARGS(...) __VA_ARGS__ | |
447 | ||
448 | #undef TRACEPOINT_EVENT_CLASS | |
449 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
450 | static void __event_notifier_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); | |
451 | ||
452 | #include TRACEPOINT_INCLUDE | |
453 | ||
1c324e59 | 454 | /* |
c785c634 | 455 | * Stage 3.0 of tracepoint event generation. |
1c324e59 | 456 | * |
1c324e59 MD |
457 | * Create static inline function that calculates event size. |
458 | */ | |
459 | ||
460 | /* Reset all macros within TRACEPOINT_EVENT */ | |
461 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 462 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 463 | |
4774c8f3 | 464 | #undef _ctf_integer_ext |
180901e6 | 465 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
466 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
467 | __event_len += sizeof(_type); | |
468 | ||
4774c8f3 | 469 | #undef _ctf_float |
180901e6 | 470 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
471 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
472 | __event_len += sizeof(_type); | |
473 | ||
4774c8f3 | 474 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
475 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, _encoding, \ |
476 | _nowrite, _elem_type_base) \ | |
1c324e59 MD |
477 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
478 | __event_len += sizeof(_type) * (_length); | |
479 | ||
4774c8f3 | 480 | #undef _ctf_sequence_encoded |
48d660d1 | 481 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 482 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 MD |
483 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
484 | __event_len += sizeof(_length_type); \ | |
485 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
486 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ | |
487 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
488 | __dynamic_len_idx++; | |
489 | ||
4774c8f3 | 490 | #undef _ctf_string |
180901e6 | 491 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
492 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
493 | strlen((_src) ? (_src) : __LTTNG_UST_NULL_STRING) + 1; | |
1c324e59 | 494 | |
c785c634 MD |
495 | #undef _ctf_enum |
496 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
497 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
498 | ||
1c324e59 | 499 | #undef TP_ARGS |
2eda209b | 500 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
501 | |
502 | #undef TP_FIELDS | |
2eda209b | 503 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
504 | |
505 | #undef TRACEPOINT_EVENT_CLASS | |
a8909ba5 PW |
506 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ |
507 | static inline lttng_ust_notrace \ | |
508 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)); \ | |
509 | static inline \ | |
510 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
511 | { \ |
512 | size_t __event_len = 0; \ | |
513 | unsigned int __dynamic_len_idx = 0; \ | |
514 | \ | |
515 | if (0) \ | |
516 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
517 | _fields \ | |
518 | return __event_len; \ | |
519 | } | |
520 | ||
521 | #include TRACEPOINT_INCLUDE | |
522 | ||
1ddfd641 MD |
523 | /* |
524 | * Stage 3.1 of tracepoint event generation. | |
525 | * | |
526 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 527 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
528 | */ |
529 | ||
530 | /* Reset all macros within TRACEPOINT_EVENT */ | |
531 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
532 | #include <lttng/ust-tracepoint-event-write.h> |
533 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 534 | |
4774c8f3 | 535 | #undef _ctf_integer_ext |
180901e6 | 536 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
fa099471 | 537 | if (lttng_is_signed_type(_type)) { \ |
3ebeea0d MD |
538 | int64_t __ctf_tmp_int64; \ |
539 | switch (sizeof(_type)) { \ | |
540 | case 1: \ | |
541 | { \ | |
542 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
543 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
544 | break; \ | |
545 | } \ | |
546 | case 2: \ | |
547 | { \ | |
548 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
549 | if (_byte_order != BYTE_ORDER) \ |
550 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
551 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
552 | break; \ | |
553 | } \ | |
554 | case 4: \ | |
555 | { \ | |
556 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
557 | if (_byte_order != BYTE_ORDER) \ |
558 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
559 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
560 | break; \ | |
561 | } \ | |
562 | case 8: \ | |
563 | { \ | |
564 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
565 | if (_byte_order != BYTE_ORDER) \ |
566 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
567 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
568 | break; \ | |
569 | } \ | |
570 | default: \ | |
571 | abort(); \ | |
572 | }; \ | |
fa099471 MD |
573 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ |
574 | } else { \ | |
3ebeea0d MD |
575 | uint64_t __ctf_tmp_uint64; \ |
576 | switch (sizeof(_type)) { \ | |
577 | case 1: \ | |
578 | { \ | |
579 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
580 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
581 | break; \ | |
582 | } \ | |
583 | case 2: \ | |
584 | { \ | |
585 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
586 | if (_byte_order != BYTE_ORDER) \ |
587 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
588 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
589 | break; \ | |
590 | } \ | |
591 | case 4: \ | |
592 | { \ | |
593 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
594 | if (_byte_order != BYTE_ORDER) \ |
595 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
596 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
597 | break; \ | |
598 | } \ | |
599 | case 8: \ | |
600 | { \ | |
601 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
602 | if (_byte_order != BYTE_ORDER) \ |
603 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
604 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
605 | break; \ | |
606 | } \ | |
607 | default: \ | |
608 | abort(); \ | |
609 | }; \ | |
fa099471 MD |
610 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ |
611 | } \ | |
1ddfd641 MD |
612 | __stack_data += sizeof(int64_t); |
613 | ||
4774c8f3 | 614 | #undef _ctf_float |
180901e6 | 615 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
616 | { \ |
617 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
618 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
619 | __stack_data += sizeof(double); \ | |
620 | } | |
1ddfd641 | 621 | |
4774c8f3 | 622 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
623 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
624 | _encoding, _nowrite, _elem_type_base) \ | |
fa099471 MD |
625 | { \ |
626 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 627 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
628 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
629 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
630 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
631 | __stack_data += sizeof(void *); \ | |
fa099471 | 632 | } |
1ddfd641 | 633 | |
4774c8f3 | 634 | #undef _ctf_sequence_encoded |
48d660d1 | 635 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 636 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
fa099471 MD |
637 | { \ |
638 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 639 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
640 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
641 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
642 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
643 | __stack_data += sizeof(void *); \ | |
fa099471 | 644 | } |
1ddfd641 | 645 | |
4774c8f3 | 646 | #undef _ctf_string |
180901e6 | 647 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 648 | { \ |
24a39530 PP |
649 | const void *__ctf_tmp_ptr = \ |
650 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
b1239ad6 MD |
651 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
652 | __stack_data += sizeof(void *); \ | |
fa099471 | 653 | } |
1ddfd641 | 654 | |
c785c634 MD |
655 | #undef _ctf_enum |
656 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
657 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
658 | ||
1ddfd641 MD |
659 | #undef TP_ARGS |
660 | #define TP_ARGS(...) __VA_ARGS__ | |
661 | ||
662 | #undef TP_FIELDS | |
663 | #define TP_FIELDS(...) __VA_ARGS__ | |
664 | ||
665 | #undef TRACEPOINT_EVENT_CLASS | |
666 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
667 | static inline \ | |
d37ecb3f | 668 | void __event_prepare_interpreter_stack__##_provider##___##_name(char *__stack_data,\ |
1ddfd641 MD |
669 | _TP_ARGS_DATA_PROTO(_args)) \ |
670 | { \ | |
671 | _fields \ | |
672 | } | |
673 | ||
674 | #include TRACEPOINT_INCLUDE | |
675 | ||
1c324e59 | 676 | /* |
df854e41 | 677 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
678 | * |
679 | * Create static inline function that calculates event payload alignment. | |
680 | */ | |
681 | ||
682 | /* Reset all macros within TRACEPOINT_EVENT */ | |
683 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 684 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 685 | |
4774c8f3 | 686 | #undef _ctf_integer_ext |
180901e6 | 687 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
688 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
689 | ||
4774c8f3 | 690 | #undef _ctf_float |
180901e6 | 691 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
692 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
693 | ||
4774c8f3 | 694 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
695 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
696 | _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
697 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
698 | ||
4774c8f3 | 699 | #undef _ctf_sequence_encoded |
48d660d1 | 700 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 701 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 MD |
702 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
703 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); | |
704 | ||
4774c8f3 | 705 | #undef _ctf_string |
180901e6 | 706 | #define _ctf_string(_item, _src, _nowrite) |
1c324e59 | 707 | |
c785c634 MD |
708 | #undef _ctf_enum |
709 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
710 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
711 | ||
1c324e59 | 712 | #undef TP_ARGS |
2eda209b | 713 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
714 | |
715 | #undef TP_FIELDS | |
2eda209b | 716 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
717 | |
718 | #undef TRACEPOINT_EVENT_CLASS | |
719 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
720 | static inline lttng_ust_notrace \ |
721 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)); \ | |
1c324e59 MD |
722 | static inline \ |
723 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
724 | { \ | |
725 | size_t __event_align = 1; \ | |
726 | _fields \ | |
727 | return __event_align; \ | |
728 | } | |
729 | ||
730 | #include TRACEPOINT_INCLUDE | |
731 | ||
732 | ||
733 | /* | |
df854e41 | 734 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
735 | * |
736 | * Create the probe function. This function calls event size calculation | |
737 | * and writes event data into the buffer. | |
738 | */ | |
739 | ||
740 | /* Reset all macros within TRACEPOINT_EVENT */ | |
741 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 742 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 743 | |
4774c8f3 | 744 | #undef _ctf_integer_ext |
180901e6 | 745 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
746 | { \ |
747 | _type __tmp = (_src); \ | |
748 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
749 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
750 | } | |
751 | ||
4774c8f3 | 752 | #undef _ctf_float |
180901e6 | 753 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
754 | { \ |
755 | _type __tmp = (_src); \ | |
756 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
757 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
758 | } | |
759 | ||
4774c8f3 | 760 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
761 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
762 | _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
763 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
764 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); | |
765 | ||
4774c8f3 | 766 | #undef _ctf_sequence_encoded |
48d660d1 | 767 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 768 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 | 769 | { \ |
d71b57b9 | 770 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
1c324e59 MD |
771 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
772 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
773 | } \ | |
774 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
775 | __chan->ops->event_write(&__ctx, _src, \ | |
776 | sizeof(_type) * __get_dynamic_len(dest)); | |
777 | ||
4774c8f3 | 778 | #undef _ctf_string |
180901e6 | 779 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
780 | { \ |
781 | const char *__ctf_tmp_string = \ | |
782 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
783 | lib_ring_buffer_align_ctx(&__ctx, \ | |
784 | lttng_alignof(*__ctf_tmp_string)); \ | |
f9ec4a97 MD |
785 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ |
786 | __get_dynamic_len(dest)); \ | |
24a39530 PP |
787 | } |
788 | ||
1c324e59 | 789 | |
c785c634 MD |
790 | #undef _ctf_enum |
791 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
792 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
793 | ||
1c324e59 MD |
794 | /* Beware: this get len actually consumes the len value */ |
795 | #undef __get_dynamic_len | |
d71b57b9 | 796 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 MD |
797 | |
798 | #undef TP_ARGS | |
2eda209b | 799 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
800 | |
801 | #undef TP_FIELDS | |
2eda209b | 802 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 803 | |
95c25348 PW |
804 | /* |
805 | * For state dump, check that "session" argument (mandatory) matches the | |
806 | * session this event belongs to. Ensures that we write state dump data only | |
807 | * into the started session, not into all sessions. | |
808 | */ | |
809 | #undef _TP_SESSION_CHECK | |
810 | #ifdef TP_SESSION_CHECK | |
811 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
812 | #else /* TP_SESSION_CHECK */ | |
813 | #define _TP_SESSION_CHECK(session, csession) 1 | |
814 | #endif /* TP_SESSION_CHECK */ | |
815 | ||
97904b41 MD |
816 | /* |
817 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
818 | * corruption on 32-bit PowerPC. Disable this feature on that | |
819 | * architecture for now by always using the NULL value for the ip | |
820 | * context. | |
821 | */ | |
5dadb547 MD |
822 | #undef _TP_IP_PARAM |
823 | #ifdef TP_IP_PARAM | |
e1d09f9e | 824 | #define _TP_IP_PARAM(x) (x) |
5dadb547 | 825 | #else /* TP_IP_PARAM */ |
97904b41 MD |
826 | |
827 | #if defined(__PPC__) && !defined(__PPC64__) | |
828 | #define _TP_IP_PARAM(x) NULL | |
829 | #else /* #if defined(__PPC__) && !defined(__PPC64__) */ | |
e1d09f9e | 830 | #define _TP_IP_PARAM(x) __builtin_return_address(0) |
97904b41 MD |
831 | #endif /* #else #if defined(__PPC__) && !defined(__PPC64__) */ |
832 | ||
5dadb547 MD |
833 | #endif /* TP_IP_PARAM */ |
834 | ||
1ddfd641 MD |
835 | /* |
836 | * Using twice size for filter stack data to hold size and pointer for | |
837 | * each field (worse case). For integers, max size required is 64-bit. | |
838 | * Same for double-precision floats. Those fit within | |
839 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 840 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 841 | */ |
1c324e59 MD |
842 | #undef TRACEPOINT_EVENT_CLASS |
843 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
844 | static lttng_ust_notrace \ |
845 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
846 | static \ | |
847 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 848 | { \ |
53569322 | 849 | struct lttng_event *__event = (struct lttng_event *) __tp_data; \ |
7dd08bec | 850 | struct lttng_channel *__chan = __event->chan; \ |
f280cb51 | 851 | struct lttng_ust_lib_ring_buffer_ctx __ctx; \ |
53569322 | 852 | struct lttng_stack_ctx __lttng_ctx; \ |
1c324e59 MD |
853 | size_t __event_len, __event_align; \ |
854 | size_t __dynamic_len_idx = 0; \ | |
75026e9f | 855 | const size_t __num_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1; \ |
d71b57b9 | 856 | union { \ |
75026e9f FD |
857 | size_t __dynamic_len[__num_fields]; \ |
858 | char __filter_stack_data[2 * sizeof(unsigned long) * __num_fields]; \ | |
d71b57b9 | 859 | } __stackvar; \ |
1c324e59 MD |
860 | int __ret; \ |
861 | \ | |
862 | if (0) \ | |
863 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
95c25348 PW |
864 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
865 | return; \ | |
1c324e59 MD |
866 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->session->active))) \ |
867 | return; \ | |
868 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->enabled))) \ | |
869 | return; \ | |
870 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
871 | return; \ | |
1b436e01 MD |
872 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
873 | return; \ | |
a56fd376 FD |
874 | if (caa_unlikely(!cds_list_empty(&__event->filter_bytecode_runtime_head))) { \ |
875 | struct lttng_bytecode_runtime *__filter_bc_runtime; \ | |
dcdeaff0 | 876 | int __filter_record = __event->has_enablers_without_bytecode; \ |
f488575f | 877 | \ |
d37ecb3f | 878 | __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__filter_stack_data, \ |
f488575f | 879 | _TP_ARGS_DATA_VAR(_args)); \ |
a56fd376 | 880 | tp_list_for_each_entry_rcu(__filter_bc_runtime, &__event->filter_bytecode_runtime_head, node) { \ |
c42416df | 881 | if (caa_unlikely(__filter_bc_runtime->interpreter_funcs.filter(__filter_bc_runtime, \ |
04aa13f8 | 882 | __stackvar.__filter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) { \ |
8a92ed2a | 883 | __filter_record = 1; \ |
5ffb7c14 FD |
884 | break; \ |
885 | } \ | |
f488575f | 886 | } \ |
8a92ed2a | 887 | if (caa_likely(!__filter_record)) \ |
61ce3223 | 888 | return; \ |
1ddfd641 MD |
889 | } \ |
890 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
1c324e59 MD |
891 | _TP_ARGS_DATA_VAR(_args)); \ |
892 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
53569322 MD |
893 | memset(&__lttng_ctx, 0, sizeof(__lttng_ctx)); \ |
894 | __lttng_ctx.event = __event; \ | |
895 | __lttng_ctx.chan_ctx = tp_rcu_dereference_bp(__chan->ctx); \ | |
896 | __lttng_ctx.event_ctx = tp_rcu_dereference_bp(__event->ctx); \ | |
1c324e59 | 897 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
53569322 | 898 | __event_align, -1, __chan->handle, &__lttng_ctx); \ |
e1d09f9e | 899 | __ctx.ip = _TP_IP_PARAM(TP_IP_PARAM); \ |
1c324e59 MD |
900 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
901 | if (__ret < 0) \ | |
902 | return; \ | |
903 | _fields \ | |
904 | __chan->ops->event_commit(&__ctx); \ | |
905 | } | |
906 | ||
907 | #include TRACEPOINT_INCLUDE | |
908 | ||
909 | #undef __get_dynamic_len | |
910 | ||
68755429 MD |
911 | /* |
912 | * Stage 5.1 of tracepoint event generation. | |
913 | * | |
914 | * Create probe signature | |
915 | */ | |
916 | ||
917 | /* Reset all macros within TRACEPOINT_EVENT */ | |
918 | #include <lttng/ust-tracepoint-event-reset.h> | |
919 | ||
920 | #undef TP_ARGS | |
2eda209b | 921 | #define TP_ARGS(...) __VA_ARGS__ |
9eb06182 MD |
922 | |
923 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 MD |
924 | |
925 | #undef TRACEPOINT_EVENT_CLASS | |
926 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
ff82b7c1 | 927 | static const char __tp_event_signature___##_provider##___##_name[] = \ |
9eb06182 | 928 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
929 | |
930 | #include TRACEPOINT_INCLUDE | |
931 | ||
9eb06182 MD |
932 | #undef _TP_EXTRACT_STRING2 |
933 | ||
d8d2416d FD |
934 | /* |
935 | * Stage 5.2 of tracepoint event generation. | |
936 | * | |
937 | * Create the event notifier probe function. | |
938 | */ | |
939 | #undef TRACEPOINT_EVENT_CLASS | |
940 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
941 | static lttng_ust_notrace \ | |
942 | void __event_notifier_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
943 | static \ | |
944 | void __event_notifier_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
945 | { \ | |
946 | struct lttng_event_notifier *__event_notifier = (struct lttng_event_notifier *) __tp_data; \ | |
947 | const size_t __num_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1;\ | |
948 | union { \ | |
949 | size_t __dynamic_len[__num_fields]; \ | |
d37ecb3f | 950 | char __interpreter_stack_data[2 * sizeof(unsigned long) * __num_fields]; \ |
d8d2416d FD |
951 | } __stackvar; \ |
952 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event_notifier->enabled))) \ | |
953 | return; \ | |
954 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ | |
955 | return; \ | |
956 | if (caa_unlikely(!cds_list_empty(&__event_notifier->filter_bytecode_runtime_head))) { \ | |
957 | struct lttng_bytecode_runtime *__filter_bc_runtime; \ | |
958 | int __filter_record = __event_notifier->has_enablers_without_bytecode; \ | |
959 | \ | |
d37ecb3f | 960 | __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ |
d8d2416d FD |
961 | _TP_ARGS_DATA_VAR(_args)); \ |
962 | tp_list_for_each_entry_rcu(__filter_bc_runtime, &__event_notifier->filter_bytecode_runtime_head, node) { \ | |
c42416df | 963 | if (caa_unlikely(__filter_bc_runtime->interpreter_funcs.filter(__filter_bc_runtime, \ |
d37ecb3f | 964 | __stackvar.__interpreter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) \ |
d8d2416d FD |
965 | __filter_record = 1; \ |
966 | } \ | |
967 | if (caa_likely(!__filter_record)) \ | |
968 | return; \ | |
969 | } \ | |
d37ecb3f FD |
970 | if (caa_unlikely(!cds_list_empty(&__event_notifier->capture_bytecode_runtime_head))) \ |
971 | __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ | |
972 | _TP_ARGS_DATA_VAR(_args)); \ | |
d8d2416d | 973 | \ |
d37ecb3f FD |
974 | lttng_event_notifier_notification_send(__event_notifier, \ |
975 | __stackvar.__interpreter_stack_data); \ | |
d8d2416d FD |
976 | } |
977 | ||
978 | #include TRACEPOINT_INCLUDE | |
979 | ||
05ceaafd | 980 | /* |
882a56d7 | 981 | * Stage 6 of tracepoint event generation. |
1c324e59 | 982 | * |
df854e41 MD |
983 | * Tracepoint loglevel mapping definition generation. We generate a |
984 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
985 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
986 | * the compiler will complain. | |
05ceaafd MD |
987 | */ |
988 | ||
989 | /* Reset all macros within TRACEPOINT_EVENT */ | |
990 | #include <lttng/ust-tracepoint-event-reset.h> | |
991 | ||
4ea4f80e MD |
992 | /* |
993 | * Declare _loglevel___##__provider##___##__name as non-static, with | |
994 | * hidden visibility for c++ handling of weakref. We do a weakref to the | |
995 | * symbol in a later stage, which requires that the symbol is not | |
996 | * mangled. | |
997 | */ | |
998 | #ifdef __cplusplus | |
999 | #define LTTNG_TP_EXTERN_C extern "C" | |
1000 | #else | |
1001 | #define LTTNG_TP_EXTERN_C | |
1002 | #endif | |
1003 | ||
05ceaafd | 1004 | #undef TRACEPOINT_LOGLEVEL |
457a6b58 MD |
1005 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
1006 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
4ea4f80e MD |
1007 | LTTNG_TP_EXTERN_C const int *_loglevel___##__provider##___##__name \ |
1008 | __attribute__((visibility("hidden"))) = \ | |
457a6b58 | 1009 | &_loglevel_value___##__provider##___##__name; |
df854e41 MD |
1010 | |
1011 | #include TRACEPOINT_INCLUDE | |
1012 | ||
4ea4f80e | 1013 | #undef LTTNG_TP_EXTERN_C |
4ea4f80e | 1014 | |
6ddc916d MD |
1015 | /* |
1016 | * Stage 6.1 of tracepoint event generation. | |
1017 | * | |
1018 | * Tracepoint UML URI info. | |
1019 | */ | |
1020 | ||
1021 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1022 | #include <lttng/ust-tracepoint-event-reset.h> | |
1023 | ||
4ea4f80e MD |
1024 | /* |
1025 | * Declare _model_emf_uri___##__provider##___##__name as non-static, | |
1026 | * with hidden visibility for c++ handling of weakref. We do a weakref | |
1027 | * to the symbol in a later stage, which requires that the symbol is not | |
1028 | * mangled. | |
1029 | */ | |
1030 | #ifdef __cplusplus | |
1031 | #define LTTNG_TP_EXTERN_C extern "C" | |
1032 | #else | |
1033 | #define LTTNG_TP_EXTERN_C | |
1034 | #endif | |
1035 | ||
6ddc916d MD |
1036 | #undef TRACEPOINT_MODEL_EMF_URI |
1037 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
4ea4f80e | 1038 | LTTNG_TP_EXTERN_C const char *_model_emf_uri___##__provider##___##__name \ |
082802f9 | 1039 | __attribute__((visibility("hidden"))) = __uri; \ |
6ddc916d MD |
1040 | |
1041 | #include TRACEPOINT_INCLUDE | |
1042 | ||
4ea4f80e | 1043 | #undef LTTNG_TP_EXTERN_C |
4ea4f80e | 1044 | |
df854e41 | 1045 | /* |
882a56d7 | 1046 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
1047 | * |
1048 | * Create events description structures. We use a weakref because | |
1049 | * loglevels are optional. If not declared, the event will point to the | |
1050 | * a loglevel that contains NULL. | |
1051 | */ | |
1052 | ||
1053 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1054 | #include <lttng/ust-tracepoint-event-reset.h> | |
1055 | ||
1056 | #undef TRACEPOINT_EVENT_INSTANCE | |
1057 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
1058 | static const int * \ |
1059 | __ref_loglevel___##_provider##___##_name \ | |
1060 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
1061 | static const char * \ |
1062 | __ref_model_emf_uri___##_provider##___##_name \ | |
1063 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
ff82b7c1 | 1064 | static const struct lttng_event_desc __event_desc___##_provider##_##_name = { \ |
df854e41 | 1065 | .name = #_provider ":" #_name, \ |
fbdeb5ec | 1066 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template,\ |
46d52200 ZT |
1067 | .ctx = NULL, \ |
1068 | .fields = __event_fields___##_provider##___##_template, \ | |
1c80c909 | 1069 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template) - 1, \ |
882a56d7 | 1070 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 1071 | .signature = __tp_event_signature___##_provider##___##_template, \ |
c785c634 MD |
1072 | .u = { \ |
1073 | .ext = { \ | |
1074 | .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \ | |
d8d2416d | 1075 | .event_notifier_callback = (void (*)(void)) &__event_notifier_probe__##_provider##___##_template,\ |
c785c634 MD |
1076 | }, \ |
1077 | }, \ | |
df854e41 MD |
1078 | }; |
1079 | ||
1080 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 1081 | |
df854e41 | 1082 | /* |
882a56d7 | 1083 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
1084 | * |
1085 | * Create array of events. | |
1086 | */ | |
1087 | ||
1088 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1089 | #include <lttng/ust-tracepoint-event-reset.h> | |
1090 | ||
1091 | #undef TRACEPOINT_EVENT_INSTANCE | |
1092 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
1093 | &__event_desc___##_provider##_##_name, | |
1094 | ||
1095 | static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { | |
05ceaafd | 1096 | #include TRACEPOINT_INCLUDE |
1c80c909 | 1097 | NULL, /* Dummy, C99 forbids 0-len array. */ |
05ceaafd MD |
1098 | }; |
1099 | ||
df854e41 | 1100 | |
05ceaafd | 1101 | /* |
882a56d7 | 1102 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
1103 | * |
1104 | * Create a toplevel descriptor for the whole probe. | |
1105 | */ | |
1106 | ||
1107 | /* non-const because list head will be modified when registered. */ | |
1108 | static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { | |
df854e41 | 1109 | .provider = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd | 1110 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
1c80c909 | 1111 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)) - 1, |
46d52200 ZT |
1112 | .head = { NULL, NULL }, |
1113 | .lazy_init_head = { NULL, NULL }, | |
1114 | .lazy = 0, | |
71d31690 MD |
1115 | .major = LTTNG_UST_PROVIDER_MAJOR, |
1116 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
1117 | }; |
1118 | ||
f0cc794d MD |
1119 | static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER); |
1120 | ||
05ceaafd | 1121 | /* |
882a56d7 | 1122 | * Stage 9 of tracepoint event generation. |
05ceaafd | 1123 | * |
1c324e59 | 1124 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
1125 | * |
1126 | * Generate the constructor as an externally visible symbol for use when | |
1127 | * linking the probe statically. | |
f0cc794d MD |
1128 | * |
1129 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
1130 | */ |
1131 | ||
1132 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1133 | #include <lttng/ust-tracepoint-event-reset.h> | |
a8909ba5 PW |
1134 | static void lttng_ust_notrace __attribute__((constructor)) |
1135 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void); | |
1136 | static void | |
1c324e59 MD |
1137 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) |
1138 | { | |
1139 | int ret; | |
1140 | ||
f0cc794d MD |
1141 | if (_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1142 | TRACEPOINT_PROVIDER)++) { | |
1143 | return; | |
1144 | } | |
e8bd1da7 MD |
1145 | /* |
1146 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
1147 | * static inline function that ensures every probe PROVIDER | |
1148 | * argument match the provider within which they appear. It | |
1149 | * calls empty static inline functions, and therefore has no | |
1150 | * runtime effect. However, if it detects an error, a linker | |
1151 | * error will appear. | |
1152 | */ | |
1153 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
7dd08bec | 1154 | ret = lttng_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
7d381d6e | 1155 | if (ret) { |
0fdd0b89 | 1156 | fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe.\n", ret); |
7d381d6e MD |
1157 | abort(); |
1158 | } | |
1c324e59 MD |
1159 | } |
1160 | ||
a8909ba5 PW |
1161 | static void lttng_ust_notrace __attribute__((destructor)) |
1162 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void); | |
1163 | static void | |
1c324e59 MD |
1164 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) |
1165 | { | |
f0cc794d MD |
1166 | if (--_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1167 | TRACEPOINT_PROVIDER)) { | |
1168 | return; | |
1169 | } | |
7dd08bec | 1170 | lttng_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 | 1171 | } |
628e1d81 MD |
1172 | |
1173 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER); |