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 | ||
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> |
39ad74cf | 32 | #include <byteswap.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 MD |
218 | }; |
219 | ||
220 | #include TRACEPOINT_INCLUDE | |
221 | ||
1c324e59 MD |
222 | /* |
223 | * Stage 1 of tracepoint event generation. | |
224 | * | |
225 | * Create event field type metadata section. | |
226 | * Each event produce an array of fields. | |
227 | */ | |
228 | ||
229 | /* Reset all macros within TRACEPOINT_EVENT */ | |
230 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
231 | #include <lttng/ust-tracepoint-event-write.h> |
232 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 233 | |
4774c8f3 | 234 | #undef _ctf_integer_ext |
180901e6 | 235 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
236 | { \ |
237 | .name = #_item, \ | |
238 | .type = __type_integer(_type, _byte_order, _base, none),\ | |
180901e6 | 239 | .nowrite = _nowrite, \ |
1c324e59 MD |
240 | }, |
241 | ||
4774c8f3 | 242 | #undef _ctf_float |
180901e6 | 243 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
244 | { \ |
245 | .name = #_item, \ | |
246 | .type = __type_float(_type), \ | |
180901e6 | 247 | .nowrite = _nowrite, \ |
1c324e59 MD |
248 | }, |
249 | ||
4774c8f3 | 250 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
251 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ |
252 | _length, _encoding, _nowrite, \ | |
253 | _elem_type_base) \ | |
1c324e59 MD |
254 | { \ |
255 | .name = #_item, \ | |
256 | .type = \ | |
257 | { \ | |
258 | .atype = atype_array, \ | |
46d52200 | 259 | .u = \ |
1c324e59 | 260 | { \ |
46d52200 ZT |
261 | .array = \ |
262 | { \ | |
f3ec4cb5 | 263 | .elem_type = __type_integer(_type, _byte_order, _elem_type_base, _encoding), \ |
46d52200 ZT |
264 | .length = _length, \ |
265 | } \ | |
266 | } \ | |
1c324e59 | 267 | }, \ |
180901e6 | 268 | .nowrite = _nowrite, \ |
1c324e59 MD |
269 | }, |
270 | ||
4774c8f3 | 271 | #undef _ctf_sequence_encoded |
48d660d1 | 272 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ |
f968510a PP |
273 | _length_type, _src_length, _encoding, _nowrite, \ |
274 | _elem_type_base) \ | |
1c324e59 MD |
275 | { \ |
276 | .name = #_item, \ | |
277 | .type = \ | |
278 | { \ | |
279 | .atype = atype_sequence, \ | |
46d52200 | 280 | .u = \ |
1c324e59 | 281 | { \ |
46d52200 ZT |
282 | .sequence = \ |
283 | { \ | |
284 | .length_type = __type_integer(_length_type, BYTE_ORDER, 10, none), \ | |
48d660d1 | 285 | .elem_type = __type_integer(_type, _byte_order, _elem_type_base, _encoding), \ |
46d52200 | 286 | }, \ |
1c324e59 MD |
287 | }, \ |
288 | }, \ | |
180901e6 | 289 | .nowrite = _nowrite, \ |
1c324e59 MD |
290 | }, |
291 | ||
4774c8f3 | 292 | #undef _ctf_string |
180901e6 | 293 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
294 | { \ |
295 | .name = #_item, \ | |
296 | .type = \ | |
297 | { \ | |
298 | .atype = atype_string, \ | |
46d52200 ZT |
299 | .u = \ |
300 | { \ | |
301 | .basic = { .string = { .encoding = lttng_encode_UTF8 } } \ | |
302 | }, \ | |
1c324e59 | 303 | }, \ |
180901e6 | 304 | .nowrite = _nowrite, \ |
1c324e59 MD |
305 | }, |
306 | ||
c785c634 MD |
307 | #undef _ctf_enum |
308 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
309 | { \ | |
310 | .name = #_item, \ | |
311 | .type = { \ | |
312 | .atype = atype_enum, \ | |
313 | .u = { \ | |
314 | .basic = { \ | |
315 | .enumeration = { \ | |
316 | .desc = &__enum_##_provider##_##_name, \ | |
317 | .container_type = { \ | |
318 | .size = sizeof(_type) * CHAR_BIT, \ | |
319 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ | |
320 | .signedness = lttng_is_signed_type(_type), \ | |
321 | .reverse_byte_order = 0, \ | |
322 | .base = 10, \ | |
323 | .encoding = lttng_encode_none, \ | |
324 | }, \ | |
325 | }, \ | |
326 | }, \ | |
327 | }, \ | |
328 | }, \ | |
329 | .nowrite = _nowrite, \ | |
330 | }, | |
331 | ||
1c324e59 | 332 | #undef TP_FIELDS |
2eda209b | 333 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ |
1c324e59 MD |
334 | |
335 | #undef TRACEPOINT_EVENT_CLASS | |
336 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
337 | static const struct lttng_event_field __event_fields___##_provider##___##_name[] = { \ | |
338 | _fields \ | |
1c80c909 | 339 | ctf_integer(int, dummy, 0) /* Dummy, C99 forbids 0-len array. */ \ |
1c324e59 MD |
340 | }; |
341 | ||
c785c634 MD |
342 | #undef TRACEPOINT_ENUM |
343 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
344 | static const struct lttng_enum_desc __enum_##_provider##_##_name = { \ | |
345 | .name = #_provider "_" #_name, \ | |
346 | .entries = __enum_values__##_provider##_##_name, \ | |
1c80c909 | 347 | .nr_entries = _TP_ARRAY_SIZE(__enum_values__##_provider##_##_name) - 1, \ |
c785c634 MD |
348 | }; |
349 | ||
1c324e59 MD |
350 | #include TRACEPOINT_INCLUDE |
351 | ||
352 | /* | |
353 | * Stage 2 of tracepoint event generation. | |
354 | * | |
355 | * Create probe callback prototypes. | |
356 | */ | |
357 | ||
358 | /* Reset all macros within TRACEPOINT_EVENT */ | |
359 | #include <lttng/ust-tracepoint-event-reset.h> | |
360 | ||
361 | #undef TP_ARGS | |
2eda209b | 362 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
363 | |
364 | #undef TRACEPOINT_EVENT_CLASS | |
365 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
366 | static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); | |
367 | ||
368 | #include TRACEPOINT_INCLUDE | |
369 | ||
d5fc3224 FD |
370 | /* |
371 | * Stage 2.1 of tracepoint event generation. | |
372 | * | |
373 | * Create probe trigger callback prototypes. | |
374 | */ | |
375 | ||
376 | /* Reset all macros within TRACEPOINT_EVENT */ | |
377 | #include <lttng/ust-tracepoint-event-reset.h> | |
378 | ||
379 | #undef TP_ARGS | |
380 | #define TP_ARGS(...) __VA_ARGS__ | |
381 | ||
382 | #undef TRACEPOINT_EVENT_CLASS | |
383 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
384 | static void __trigger_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); | |
385 | ||
386 | #include TRACEPOINT_INCLUDE | |
387 | ||
1c324e59 | 388 | /* |
c785c634 | 389 | * Stage 3.0 of tracepoint event generation. |
1c324e59 | 390 | * |
1c324e59 MD |
391 | * Create static inline function that calculates event size. |
392 | */ | |
393 | ||
394 | /* Reset all macros within TRACEPOINT_EVENT */ | |
395 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 396 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 397 | |
4774c8f3 | 398 | #undef _ctf_integer_ext |
180901e6 | 399 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
400 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
401 | __event_len += sizeof(_type); | |
402 | ||
4774c8f3 | 403 | #undef _ctf_float |
180901e6 | 404 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
405 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
406 | __event_len += sizeof(_type); | |
407 | ||
4774c8f3 | 408 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
409 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, _encoding, \ |
410 | _nowrite, _elem_type_base) \ | |
1c324e59 MD |
411 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
412 | __event_len += sizeof(_type) * (_length); | |
413 | ||
4774c8f3 | 414 | #undef _ctf_sequence_encoded |
48d660d1 | 415 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 416 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 MD |
417 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
418 | __event_len += sizeof(_length_type); \ | |
419 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
420 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ | |
421 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
422 | __dynamic_len_idx++; | |
423 | ||
4774c8f3 | 424 | #undef _ctf_string |
180901e6 | 425 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
426 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
427 | strlen((_src) ? (_src) : __LTTNG_UST_NULL_STRING) + 1; | |
1c324e59 | 428 | |
c785c634 MD |
429 | #undef _ctf_enum |
430 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
431 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
432 | ||
1c324e59 | 433 | #undef TP_ARGS |
2eda209b | 434 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
435 | |
436 | #undef TP_FIELDS | |
2eda209b | 437 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
438 | |
439 | #undef TRACEPOINT_EVENT_CLASS | |
a8909ba5 PW |
440 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ |
441 | static inline lttng_ust_notrace \ | |
442 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)); \ | |
443 | static inline \ | |
444 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
445 | { \ |
446 | size_t __event_len = 0; \ | |
447 | unsigned int __dynamic_len_idx = 0; \ | |
448 | \ | |
449 | if (0) \ | |
450 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
451 | _fields \ | |
452 | return __event_len; \ | |
453 | } | |
454 | ||
455 | #include TRACEPOINT_INCLUDE | |
456 | ||
1ddfd641 MD |
457 | /* |
458 | * Stage 3.1 of tracepoint event generation. | |
459 | * | |
460 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 461 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
462 | */ |
463 | ||
464 | /* Reset all macros within TRACEPOINT_EVENT */ | |
465 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
466 | #include <lttng/ust-tracepoint-event-write.h> |
467 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 468 | |
4774c8f3 | 469 | #undef _ctf_integer_ext |
180901e6 | 470 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
fa099471 | 471 | if (lttng_is_signed_type(_type)) { \ |
3ebeea0d MD |
472 | int64_t __ctf_tmp_int64; \ |
473 | switch (sizeof(_type)) { \ | |
474 | case 1: \ | |
475 | { \ | |
476 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
477 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
478 | break; \ | |
479 | } \ | |
480 | case 2: \ | |
481 | { \ | |
482 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
483 | if (_byte_order != BYTE_ORDER) \ |
484 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
485 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
486 | break; \ | |
487 | } \ | |
488 | case 4: \ | |
489 | { \ | |
490 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
491 | if (_byte_order != BYTE_ORDER) \ |
492 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
493 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
494 | break; \ | |
495 | } \ | |
496 | case 8: \ | |
497 | { \ | |
498 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
499 | if (_byte_order != BYTE_ORDER) \ |
500 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
501 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
502 | break; \ | |
503 | } \ | |
504 | default: \ | |
505 | abort(); \ | |
506 | }; \ | |
fa099471 MD |
507 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ |
508 | } else { \ | |
3ebeea0d MD |
509 | uint64_t __ctf_tmp_uint64; \ |
510 | switch (sizeof(_type)) { \ | |
511 | case 1: \ | |
512 | { \ | |
513 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
514 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
515 | break; \ | |
516 | } \ | |
517 | case 2: \ | |
518 | { \ | |
519 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
520 | if (_byte_order != BYTE_ORDER) \ |
521 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
522 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
523 | break; \ | |
524 | } \ | |
525 | case 4: \ | |
526 | { \ | |
527 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
528 | if (_byte_order != BYTE_ORDER) \ |
529 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
530 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
531 | break; \ | |
532 | } \ | |
533 | case 8: \ | |
534 | { \ | |
535 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
536 | if (_byte_order != BYTE_ORDER) \ |
537 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
538 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
539 | break; \ | |
540 | } \ | |
541 | default: \ | |
542 | abort(); \ | |
543 | }; \ | |
fa099471 MD |
544 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ |
545 | } \ | |
1ddfd641 MD |
546 | __stack_data += sizeof(int64_t); |
547 | ||
4774c8f3 | 548 | #undef _ctf_float |
180901e6 | 549 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
550 | { \ |
551 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
552 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
553 | __stack_data += sizeof(double); \ | |
554 | } | |
1ddfd641 | 555 | |
4774c8f3 | 556 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
557 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
558 | _encoding, _nowrite, _elem_type_base) \ | |
fa099471 MD |
559 | { \ |
560 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 561 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
562 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
563 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
564 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
565 | __stack_data += sizeof(void *); \ | |
fa099471 | 566 | } |
1ddfd641 | 567 | |
4774c8f3 | 568 | #undef _ctf_sequence_encoded |
48d660d1 | 569 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 570 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
fa099471 MD |
571 | { \ |
572 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 573 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
574 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
575 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
576 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
577 | __stack_data += sizeof(void *); \ | |
fa099471 | 578 | } |
1ddfd641 | 579 | |
4774c8f3 | 580 | #undef _ctf_string |
180901e6 | 581 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 582 | { \ |
24a39530 PP |
583 | const void *__ctf_tmp_ptr = \ |
584 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
b1239ad6 MD |
585 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
586 | __stack_data += sizeof(void *); \ | |
fa099471 | 587 | } |
1ddfd641 | 588 | |
c785c634 MD |
589 | #undef _ctf_enum |
590 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
591 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
592 | ||
1ddfd641 MD |
593 | #undef TP_ARGS |
594 | #define TP_ARGS(...) __VA_ARGS__ | |
595 | ||
596 | #undef TP_FIELDS | |
597 | #define TP_FIELDS(...) __VA_ARGS__ | |
598 | ||
599 | #undef TRACEPOINT_EVENT_CLASS | |
600 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
601 | static inline \ | |
602 | void __event_prepare_filter_stack__##_provider##___##_name(char *__stack_data,\ | |
603 | _TP_ARGS_DATA_PROTO(_args)) \ | |
604 | { \ | |
605 | _fields \ | |
606 | } | |
607 | ||
608 | #include TRACEPOINT_INCLUDE | |
609 | ||
1c324e59 | 610 | /* |
df854e41 | 611 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
612 | * |
613 | * Create static inline function that calculates event payload alignment. | |
614 | */ | |
615 | ||
616 | /* Reset all macros within TRACEPOINT_EVENT */ | |
617 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 618 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 619 | |
4774c8f3 | 620 | #undef _ctf_integer_ext |
180901e6 | 621 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
622 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
623 | ||
4774c8f3 | 624 | #undef _ctf_float |
180901e6 | 625 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
626 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
627 | ||
4774c8f3 | 628 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
629 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
630 | _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
631 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
632 | ||
4774c8f3 | 633 | #undef _ctf_sequence_encoded |
48d660d1 | 634 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 635 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 MD |
636 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
637 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); | |
638 | ||
4774c8f3 | 639 | #undef _ctf_string |
180901e6 | 640 | #define _ctf_string(_item, _src, _nowrite) |
1c324e59 | 641 | |
c785c634 MD |
642 | #undef _ctf_enum |
643 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
644 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
645 | ||
1c324e59 | 646 | #undef TP_ARGS |
2eda209b | 647 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
648 | |
649 | #undef TP_FIELDS | |
2eda209b | 650 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
651 | |
652 | #undef TRACEPOINT_EVENT_CLASS | |
653 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
654 | static inline lttng_ust_notrace \ |
655 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)); \ | |
1c324e59 MD |
656 | static inline \ |
657 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
658 | { \ | |
659 | size_t __event_align = 1; \ | |
660 | _fields \ | |
661 | return __event_align; \ | |
662 | } | |
663 | ||
664 | #include TRACEPOINT_INCLUDE | |
665 | ||
666 | ||
667 | /* | |
df854e41 | 668 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
669 | * |
670 | * Create the probe function. This function calls event size calculation | |
671 | * and writes event data into the buffer. | |
672 | */ | |
673 | ||
674 | /* Reset all macros within TRACEPOINT_EVENT */ | |
675 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 676 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 677 | |
4774c8f3 | 678 | #undef _ctf_integer_ext |
180901e6 | 679 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
680 | { \ |
681 | _type __tmp = (_src); \ | |
682 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
683 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
684 | } | |
685 | ||
4774c8f3 | 686 | #undef _ctf_float |
180901e6 | 687 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
688 | { \ |
689 | _type __tmp = (_src); \ | |
690 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
691 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
692 | } | |
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 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
698 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); | |
699 | ||
4774c8f3 | 700 | #undef _ctf_sequence_encoded |
48d660d1 | 701 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 702 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 | 703 | { \ |
d71b57b9 | 704 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
1c324e59 MD |
705 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
706 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
707 | } \ | |
708 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
709 | __chan->ops->event_write(&__ctx, _src, \ | |
710 | sizeof(_type) * __get_dynamic_len(dest)); | |
711 | ||
a44c74d9 MD |
712 | /* |
713 | * __chan->ops->u.has_strcpy is a flag letting us know if the LTTng-UST | |
714 | * tracepoint provider ABI implements event_strcpy. This dynamic check | |
715 | * can be removed when the tracepoint provider ABI moves to 2. | |
716 | */ | |
717 | #if (LTTNG_UST_PROVIDER_MAJOR > 1) | |
718 | #error "Tracepoint probe provider major version has changed. Please remove dynamic check for has_strcpy." | |
719 | #endif | |
720 | ||
4774c8f3 | 721 | #undef _ctf_string |
180901e6 | 722 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
723 | { \ |
724 | const char *__ctf_tmp_string = \ | |
725 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
726 | lib_ring_buffer_align_ctx(&__ctx, \ | |
727 | lttng_alignof(*__ctf_tmp_string)); \ | |
728 | if (__chan->ops->u.has_strcpy) \ | |
729 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
730 | __get_dynamic_len(dest)); \ | |
731 | else \ | |
732 | __chan->ops->event_write(&__ctx, __ctf_tmp_string, \ | |
733 | __get_dynamic_len(dest)); \ | |
734 | } | |
735 | ||
1c324e59 | 736 | |
c785c634 MD |
737 | #undef _ctf_enum |
738 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
739 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
740 | ||
1c324e59 MD |
741 | /* Beware: this get len actually consumes the len value */ |
742 | #undef __get_dynamic_len | |
d71b57b9 | 743 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 MD |
744 | |
745 | #undef TP_ARGS | |
2eda209b | 746 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
747 | |
748 | #undef TP_FIELDS | |
2eda209b | 749 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 750 | |
95c25348 PW |
751 | /* |
752 | * For state dump, check that "session" argument (mandatory) matches the | |
753 | * session this event belongs to. Ensures that we write state dump data only | |
754 | * into the started session, not into all sessions. | |
755 | */ | |
756 | #undef _TP_SESSION_CHECK | |
757 | #ifdef TP_SESSION_CHECK | |
758 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
759 | #else /* TP_SESSION_CHECK */ | |
760 | #define _TP_SESSION_CHECK(session, csession) 1 | |
761 | #endif /* TP_SESSION_CHECK */ | |
762 | ||
97904b41 MD |
763 | /* |
764 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
765 | * corruption on 32-bit PowerPC. Disable this feature on that | |
766 | * architecture for now by always using the NULL value for the ip | |
767 | * context. | |
768 | */ | |
5dadb547 MD |
769 | #undef _TP_IP_PARAM |
770 | #ifdef TP_IP_PARAM | |
e1d09f9e | 771 | #define _TP_IP_PARAM(x) (x) |
5dadb547 | 772 | #else /* TP_IP_PARAM */ |
97904b41 MD |
773 | |
774 | #if defined(__PPC__) && !defined(__PPC64__) | |
775 | #define _TP_IP_PARAM(x) NULL | |
776 | #else /* #if defined(__PPC__) && !defined(__PPC64__) */ | |
e1d09f9e | 777 | #define _TP_IP_PARAM(x) __builtin_return_address(0) |
97904b41 MD |
778 | #endif /* #else #if defined(__PPC__) && !defined(__PPC64__) */ |
779 | ||
5dadb547 MD |
780 | #endif /* TP_IP_PARAM */ |
781 | ||
1ddfd641 MD |
782 | /* |
783 | * Using twice size for filter stack data to hold size and pointer for | |
784 | * each field (worse case). For integers, max size required is 64-bit. | |
785 | * Same for double-precision floats. Those fit within | |
786 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 787 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 788 | */ |
1c324e59 MD |
789 | #undef TRACEPOINT_EVENT_CLASS |
790 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
791 | static lttng_ust_notrace \ |
792 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
793 | static \ | |
794 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 795 | { \ |
53569322 | 796 | struct lttng_event *__event = (struct lttng_event *) __tp_data; \ |
7dd08bec | 797 | struct lttng_channel *__chan = __event->chan; \ |
f280cb51 | 798 | struct lttng_ust_lib_ring_buffer_ctx __ctx; \ |
53569322 | 799 | struct lttng_stack_ctx __lttng_ctx; \ |
1c324e59 MD |
800 | size_t __event_len, __event_align; \ |
801 | size_t __dynamic_len_idx = 0; \ | |
d71b57b9 | 802 | union { \ |
1c80c909 MD |
803 | size_t __dynamic_len[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1]; \ |
804 | char __filter_stack_data[2 * sizeof(unsigned long) * (_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1)]; \ | |
d71b57b9 | 805 | } __stackvar; \ |
1c324e59 MD |
806 | int __ret; \ |
807 | \ | |
808 | if (0) \ | |
809 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
95c25348 PW |
810 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
811 | return; \ | |
1c324e59 MD |
812 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->session->active))) \ |
813 | return; \ | |
814 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->enabled))) \ | |
815 | return; \ | |
816 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
817 | return; \ | |
1b436e01 MD |
818 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
819 | return; \ | |
e58095ef | 820 | if (caa_unlikely(!cds_list_empty(&__event->bytecode_runtime_head))) { \ |
f488575f | 821 | struct lttng_bytecode_runtime *bc_runtime; \ |
dcdeaff0 | 822 | int __filter_record = __event->has_enablers_without_bytecode; \ |
f488575f | 823 | \ |
1ddfd641 | 824 | __event_prepare_filter_stack__##_provider##___##_name(__stackvar.__filter_stack_data, \ |
f488575f | 825 | _TP_ARGS_DATA_VAR(_args)); \ |
000b8662 | 826 | tp_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
61ce3223 | 827 | if (caa_unlikely(bc_runtime->filter(bc_runtime, \ |
8a92ed2a MD |
828 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
829 | __filter_record = 1; \ | |
f488575f | 830 | } \ |
8a92ed2a | 831 | if (caa_likely(!__filter_record)) \ |
61ce3223 | 832 | return; \ |
1ddfd641 MD |
833 | } \ |
834 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
1c324e59 MD |
835 | _TP_ARGS_DATA_VAR(_args)); \ |
836 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
53569322 MD |
837 | memset(&__lttng_ctx, 0, sizeof(__lttng_ctx)); \ |
838 | __lttng_ctx.event = __event; \ | |
839 | __lttng_ctx.chan_ctx = tp_rcu_dereference_bp(__chan->ctx); \ | |
840 | __lttng_ctx.event_ctx = tp_rcu_dereference_bp(__event->ctx); \ | |
1c324e59 | 841 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
53569322 | 842 | __event_align, -1, __chan->handle, &__lttng_ctx); \ |
e1d09f9e | 843 | __ctx.ip = _TP_IP_PARAM(TP_IP_PARAM); \ |
1c324e59 MD |
844 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
845 | if (__ret < 0) \ | |
846 | return; \ | |
847 | _fields \ | |
848 | __chan->ops->event_commit(&__ctx); \ | |
849 | } | |
850 | ||
851 | #include TRACEPOINT_INCLUDE | |
852 | ||
853 | #undef __get_dynamic_len | |
854 | ||
68755429 MD |
855 | /* |
856 | * Stage 5.1 of tracepoint event generation. | |
857 | * | |
858 | * Create probe signature | |
859 | */ | |
860 | ||
861 | /* Reset all macros within TRACEPOINT_EVENT */ | |
862 | #include <lttng/ust-tracepoint-event-reset.h> | |
863 | ||
864 | #undef TP_ARGS | |
2eda209b | 865 | #define TP_ARGS(...) __VA_ARGS__ |
9eb06182 MD |
866 | |
867 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 MD |
868 | |
869 | #undef TRACEPOINT_EVENT_CLASS | |
870 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
ff82b7c1 | 871 | static const char __tp_event_signature___##_provider##___##_name[] = \ |
9eb06182 | 872 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
873 | |
874 | #include TRACEPOINT_INCLUDE | |
875 | ||
9eb06182 MD |
876 | #undef _TP_EXTRACT_STRING2 |
877 | ||
d5fc3224 FD |
878 | /* |
879 | * Stage 5.2 of tracepoint event generation. | |
880 | * | |
881 | * Create the trigger probe function. | |
882 | */ | |
883 | #undef TRACEPOINT_EVENT_CLASS | |
884 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
885 | static lttng_ust_notrace \ | |
886 | void __trigger_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
887 | static \ | |
888 | void __trigger_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
889 | { \ | |
890 | struct lttng_trigger *__trigger = (struct lttng_trigger *) __tp_data; \ | |
891 | \ | |
892 | union { \ | |
893 | size_t __dynamic_len[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1]; \ | |
894 | char __filter_stack_data[2 * sizeof(unsigned long) * (_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1)]; \ | |
895 | } __stackvar; \ | |
896 | if (caa_unlikely(!CMM_ACCESS_ONCE(__trigger->enabled))) \ | |
897 | return; \ | |
898 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ | |
899 | return; \ | |
900 | if (caa_unlikely(!cds_list_empty(&__trigger->bytecode_runtime_head))) { \ | |
901 | struct lttng_bytecode_runtime *bc_runtime; \ | |
902 | int __filter_record = __trigger->has_enablers_without_bytecode; \ | |
903 | \ | |
904 | __event_prepare_filter_stack__##_provider##___##_name(__stackvar.__filter_stack_data, \ | |
905 | _TP_ARGS_DATA_VAR(_args)); \ | |
906 | tp_list_for_each_entry_rcu(bc_runtime, &__trigger->bytecode_runtime_head, node) { \ | |
907 | if (caa_unlikely(bc_runtime->filter(bc_runtime, \ | |
908 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ | |
909 | __filter_record = 1; \ | |
910 | } \ | |
911 | if (caa_likely(!__filter_record)) \ | |
912 | return; \ | |
913 | } \ | |
914 | \ | |
915 | lttng_trigger_send_notification(__trigger); \ | |
916 | } | |
917 | ||
918 | #include TRACEPOINT_INCLUDE | |
919 | ||
05ceaafd | 920 | /* |
882a56d7 | 921 | * Stage 6 of tracepoint event generation. |
1c324e59 | 922 | * |
df854e41 MD |
923 | * Tracepoint loglevel mapping definition generation. We generate a |
924 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
925 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
926 | * the compiler will complain. | |
05ceaafd MD |
927 | */ |
928 | ||
929 | /* Reset all macros within TRACEPOINT_EVENT */ | |
930 | #include <lttng/ust-tracepoint-event-reset.h> | |
931 | ||
4ea4f80e MD |
932 | /* |
933 | * Declare _loglevel___##__provider##___##__name as non-static, with | |
934 | * hidden visibility for c++ handling of weakref. We do a weakref to the | |
935 | * symbol in a later stage, which requires that the symbol is not | |
936 | * mangled. | |
937 | */ | |
938 | #ifdef __cplusplus | |
939 | #define LTTNG_TP_EXTERN_C extern "C" | |
940 | #else | |
941 | #define LTTNG_TP_EXTERN_C | |
942 | #endif | |
943 | ||
05ceaafd | 944 | #undef TRACEPOINT_LOGLEVEL |
457a6b58 MD |
945 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
946 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
4ea4f80e MD |
947 | LTTNG_TP_EXTERN_C const int *_loglevel___##__provider##___##__name \ |
948 | __attribute__((visibility("hidden"))) = \ | |
457a6b58 | 949 | &_loglevel_value___##__provider##___##__name; |
df854e41 MD |
950 | |
951 | #include TRACEPOINT_INCLUDE | |
952 | ||
4ea4f80e | 953 | #undef LTTNG_TP_EXTERN_C |
4ea4f80e | 954 | |
6ddc916d MD |
955 | /* |
956 | * Stage 6.1 of tracepoint event generation. | |
957 | * | |
958 | * Tracepoint UML URI info. | |
959 | */ | |
960 | ||
961 | /* Reset all macros within TRACEPOINT_EVENT */ | |
962 | #include <lttng/ust-tracepoint-event-reset.h> | |
963 | ||
4ea4f80e MD |
964 | /* |
965 | * Declare _model_emf_uri___##__provider##___##__name as non-static, | |
966 | * with hidden visibility for c++ handling of weakref. We do a weakref | |
967 | * to the symbol in a later stage, which requires that the symbol is not | |
968 | * mangled. | |
969 | */ | |
970 | #ifdef __cplusplus | |
971 | #define LTTNG_TP_EXTERN_C extern "C" | |
972 | #else | |
973 | #define LTTNG_TP_EXTERN_C | |
974 | #endif | |
975 | ||
6ddc916d MD |
976 | #undef TRACEPOINT_MODEL_EMF_URI |
977 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
4ea4f80e | 978 | LTTNG_TP_EXTERN_C const char *_model_emf_uri___##__provider##___##__name \ |
082802f9 | 979 | __attribute__((visibility("hidden"))) = __uri; \ |
6ddc916d MD |
980 | |
981 | #include TRACEPOINT_INCLUDE | |
982 | ||
4ea4f80e | 983 | #undef LTTNG_TP_EXTERN_C |
4ea4f80e | 984 | |
df854e41 | 985 | /* |
882a56d7 | 986 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
987 | * |
988 | * Create events description structures. We use a weakref because | |
989 | * loglevels are optional. If not declared, the event will point to the | |
990 | * a loglevel that contains NULL. | |
991 | */ | |
992 | ||
993 | /* Reset all macros within TRACEPOINT_EVENT */ | |
994 | #include <lttng/ust-tracepoint-event-reset.h> | |
995 | ||
996 | #undef TRACEPOINT_EVENT_INSTANCE | |
997 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
998 | static const int * \ |
999 | __ref_loglevel___##_provider##___##_name \ | |
1000 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
1001 | static const char * \ |
1002 | __ref_model_emf_uri___##_provider##___##_name \ | |
1003 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
ff82b7c1 | 1004 | static const struct lttng_event_desc __event_desc___##_provider##_##_name = { \ |
df854e41 | 1005 | .name = #_provider ":" #_name, \ |
fbdeb5ec | 1006 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template,\ |
46d52200 ZT |
1007 | .ctx = NULL, \ |
1008 | .fields = __event_fields___##_provider##___##_template, \ | |
1c80c909 | 1009 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template) - 1, \ |
882a56d7 | 1010 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 1011 | .signature = __tp_event_signature___##_provider##___##_template, \ |
c785c634 MD |
1012 | .u = { \ |
1013 | .ext = { \ | |
1014 | .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \ | |
d5fc3224 | 1015 | .trigger_callback = (void (*)(void)) &__trigger_probe__##_provider##___##_template,\ |
c785c634 MD |
1016 | }, \ |
1017 | }, \ | |
df854e41 MD |
1018 | }; |
1019 | ||
1020 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 1021 | |
df854e41 | 1022 | /* |
882a56d7 | 1023 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
1024 | * |
1025 | * Create array of events. | |
1026 | */ | |
1027 | ||
1028 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1029 | #include <lttng/ust-tracepoint-event-reset.h> | |
1030 | ||
1031 | #undef TRACEPOINT_EVENT_INSTANCE | |
1032 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
1033 | &__event_desc___##_provider##_##_name, | |
1034 | ||
1035 | static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { | |
05ceaafd | 1036 | #include TRACEPOINT_INCLUDE |
1c80c909 | 1037 | NULL, /* Dummy, C99 forbids 0-len array. */ |
05ceaafd MD |
1038 | }; |
1039 | ||
df854e41 | 1040 | |
05ceaafd | 1041 | /* |
882a56d7 | 1042 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
1043 | * |
1044 | * Create a toplevel descriptor for the whole probe. | |
1045 | */ | |
1046 | ||
1047 | /* non-const because list head will be modified when registered. */ | |
1048 | static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { | |
df854e41 | 1049 | .provider = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd | 1050 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
1c80c909 | 1051 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)) - 1, |
46d52200 ZT |
1052 | .head = { NULL, NULL }, |
1053 | .lazy_init_head = { NULL, NULL }, | |
1054 | .lazy = 0, | |
71d31690 MD |
1055 | .major = LTTNG_UST_PROVIDER_MAJOR, |
1056 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
1057 | }; |
1058 | ||
f0cc794d MD |
1059 | static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER); |
1060 | ||
05ceaafd | 1061 | /* |
882a56d7 | 1062 | * Stage 9 of tracepoint event generation. |
05ceaafd | 1063 | * |
1c324e59 | 1064 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
1065 | * |
1066 | * Generate the constructor as an externally visible symbol for use when | |
1067 | * linking the probe statically. | |
f0cc794d MD |
1068 | * |
1069 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
1070 | */ |
1071 | ||
1072 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1073 | #include <lttng/ust-tracepoint-event-reset.h> | |
a8909ba5 PW |
1074 | static void lttng_ust_notrace __attribute__((constructor)) |
1075 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void); | |
1076 | static void | |
1c324e59 MD |
1077 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) |
1078 | { | |
1079 | int ret; | |
1080 | ||
f0cc794d MD |
1081 | if (_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1082 | TRACEPOINT_PROVIDER)++) { | |
1083 | return; | |
1084 | } | |
e8bd1da7 MD |
1085 | /* |
1086 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
1087 | * static inline function that ensures every probe PROVIDER | |
1088 | * argument match the provider within which they appear. It | |
1089 | * calls empty static inline functions, and therefore has no | |
1090 | * runtime effect. However, if it detects an error, a linker | |
1091 | * error will appear. | |
1092 | */ | |
1093 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
7dd08bec | 1094 | ret = lttng_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
7d381d6e | 1095 | if (ret) { |
0fdd0b89 | 1096 | fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe.\n", ret); |
7d381d6e MD |
1097 | abort(); |
1098 | } | |
1c324e59 MD |
1099 | } |
1100 | ||
a8909ba5 PW |
1101 | static void lttng_ust_notrace __attribute__((destructor)) |
1102 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void); | |
1103 | static void | |
1c324e59 MD |
1104 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) |
1105 | { | |
f0cc794d MD |
1106 | if (--_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1107 | TRACEPOINT_PROVIDER)) { | |
1108 | return; | |
1109 | } | |
7dd08bec | 1110 | lttng_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 | 1111 | } |
628e1d81 MD |
1112 | |
1113 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER); |