Commit | Line | Data |
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1c324e59 | 1 | /* |
e92f3e28 | 2 | * Copyright (c) 2011-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
1c324e59 | 3 | * |
e92f3e28 MD |
4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
5 | * of this software and associated documentation files (the "Software"), to deal | |
6 | * in the Software without restriction, including without limitation the rights | |
7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
8 | * copies of the Software, and to permit persons to whom the Software is | |
9 | * furnished to do so, subject to the following conditions: | |
1c324e59 | 10 | * |
e92f3e28 MD |
11 | * The above copyright notice and this permission notice shall be included in |
12 | * all copies or substantial portions of the Software. | |
d2428e87 MD |
13 | * |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
1c324e59 MD |
21 | */ |
22 | ||
23 | #include <stdio.h> | |
7d381d6e | 24 | #include <stdlib.h> |
1c324e59 | 25 | #include <urcu/compiler.h> |
f488575f | 26 | #include <urcu/rculist.h> |
1c324e59 | 27 | #include <lttng/ust-events.h> |
1c324e59 | 28 | #include <lttng/ringbuffer-config.h> |
a8909ba5 | 29 | #include <lttng/ust-compiler.h> |
000b8662 | 30 | #include <lttng/tracepoint.h> |
44c72f10 | 31 | #include <string.h> |
1c324e59 | 32 | |
000b8662 MD |
33 | #undef tp_list_for_each_entry_rcu |
34 | #define tp_list_for_each_entry_rcu(pos, head, member) \ | |
35 | for (pos = cds_list_entry(tp_rcu_dereference_bp((head)->next), __typeof__(*pos), member); \ | |
36 | &pos->member != (head); \ | |
37 | pos = cds_list_entry(tp_rcu_dereference_bp(pos->member.next), __typeof__(*pos), member)) | |
38 | ||
1c324e59 MD |
39 | /* |
40 | * TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the | |
41 | * same arguments and having the same field layout. | |
42 | * | |
43 | * TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with | |
44 | * its own provider and name. It refers to a class (template). | |
45 | * | |
46 | * TRACEPOINT_EVENT declared both a class and an instance and does a | |
47 | * direct mapping from the instance to the class. | |
48 | */ | |
49 | ||
50 | #undef TRACEPOINT_EVENT | |
51 | #define TRACEPOINT_EVENT(_provider, _name, _args, _fields) \ | |
52 | TRACEPOINT_EVENT_CLASS(_provider, _name, \ | |
53 | _TP_PARAMS(_args), \ | |
54 | _TP_PARAMS(_fields)) \ | |
55 | TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \ | |
68755429 | 56 | _TP_PARAMS(_args)) |
1c324e59 MD |
57 | |
58 | /* Helpers */ | |
59 | #define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) | |
60 | ||
61 | #define _tp_max_t(type, x, y) \ | |
62 | ({ \ | |
63 | type __max1 = (x); \ | |
64 | type __max2 = (y); \ | |
65 | __max1 > __max2 ? __max1: __max2; \ | |
66 | }) | |
67 | ||
68 | /* | |
69 | * Stage 0 of tracepoint event generation. | |
70 | * | |
71 | * Check that each TRACEPOINT_EVENT provider argument match the | |
72 | * TRACEPOINT_PROVIDER by creating dummy callbacks. | |
73 | */ | |
74 | ||
75 | /* Reset all macros within TRACEPOINT_EVENT */ | |
76 | #include <lttng/ust-tracepoint-event-reset.h> | |
77 | ||
78 | static inline | |
79 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void) | |
80 | { | |
81 | } | |
82 | ||
83 | #undef TRACEPOINT_EVENT_CLASS | |
84 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
85 | __tracepoint_provider_mismatch_##_provider(); | |
86 | ||
87 | #undef TRACEPOINT_EVENT_INSTANCE | |
88 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
89 | __tracepoint_provider_mismatch_##_provider(); | |
90 | ||
e8bd1da7 | 91 | static inline |
1c324e59 MD |
92 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void) |
93 | { | |
94 | #include TRACEPOINT_INCLUDE | |
95 | } | |
96 | ||
f56cd1d5 MD |
97 | /* |
98 | * Stage 0.1 of tracepoint event generation. | |
99 | * | |
100 | * Check that each TRACEPOINT_EVENT provider:name does not exceed the | |
101 | * tracepoint name length limit. | |
102 | */ | |
103 | ||
104 | /* Reset all macros within TRACEPOINT_EVENT */ | |
105 | #include <lttng/ust-tracepoint-event-reset.h> | |
106 | ||
107 | #undef TRACEPOINT_EVENT_INSTANCE | |
108 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
109 | static const char \ | |
110 | __tp_name_len_check##_provider##___##_name[LTTNG_UST_SYM_NAME_LEN] \ | |
111 | __attribute__((unused)) = \ | |
112 | #_provider ":" #_name; | |
113 | ||
114 | #include TRACEPOINT_INCLUDE | |
115 | ||
1c324e59 MD |
116 | /* |
117 | * Stage 1 of tracepoint event generation. | |
118 | * | |
119 | * Create event field type metadata section. | |
120 | * Each event produce an array of fields. | |
121 | */ | |
122 | ||
123 | /* Reset all macros within TRACEPOINT_EVENT */ | |
124 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
125 | #include <lttng/ust-tracepoint-event-write.h> |
126 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 127 | |
4774c8f3 | 128 | #undef _ctf_integer_ext |
180901e6 | 129 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
130 | { \ |
131 | .name = #_item, \ | |
132 | .type = __type_integer(_type, _byte_order, _base, none),\ | |
180901e6 | 133 | .nowrite = _nowrite, \ |
1c324e59 MD |
134 | }, |
135 | ||
4774c8f3 | 136 | #undef _ctf_float |
180901e6 | 137 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
138 | { \ |
139 | .name = #_item, \ | |
140 | .type = __type_float(_type), \ | |
180901e6 | 141 | .nowrite = _nowrite, \ |
1c324e59 MD |
142 | }, |
143 | ||
4774c8f3 | 144 | #undef _ctf_array_encoded |
180901e6 | 145 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
146 | { \ |
147 | .name = #_item, \ | |
148 | .type = \ | |
149 | { \ | |
150 | .atype = atype_array, \ | |
46d52200 | 151 | .u = \ |
1c324e59 | 152 | { \ |
46d52200 ZT |
153 | .array = \ |
154 | { \ | |
155 | .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \ | |
156 | .length = _length, \ | |
157 | } \ | |
158 | } \ | |
1c324e59 | 159 | }, \ |
180901e6 | 160 | .nowrite = _nowrite, \ |
1c324e59 MD |
161 | }, |
162 | ||
4774c8f3 MD |
163 | #undef _ctf_sequence_encoded |
164 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
180901e6 | 165 | _length_type, _src_length, _encoding, _nowrite) \ |
1c324e59 MD |
166 | { \ |
167 | .name = #_item, \ | |
168 | .type = \ | |
169 | { \ | |
170 | .atype = atype_sequence, \ | |
46d52200 | 171 | .u = \ |
1c324e59 | 172 | { \ |
46d52200 ZT |
173 | .sequence = \ |
174 | { \ | |
175 | .length_type = __type_integer(_length_type, BYTE_ORDER, 10, none), \ | |
176 | .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \ | |
177 | }, \ | |
1c324e59 MD |
178 | }, \ |
179 | }, \ | |
180901e6 | 180 | .nowrite = _nowrite, \ |
1c324e59 MD |
181 | }, |
182 | ||
4774c8f3 | 183 | #undef _ctf_string |
180901e6 | 184 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
185 | { \ |
186 | .name = #_item, \ | |
187 | .type = \ | |
188 | { \ | |
189 | .atype = atype_string, \ | |
46d52200 ZT |
190 | .u = \ |
191 | { \ | |
192 | .basic = { .string = { .encoding = lttng_encode_UTF8 } } \ | |
193 | }, \ | |
1c324e59 | 194 | }, \ |
180901e6 | 195 | .nowrite = _nowrite, \ |
1c324e59 MD |
196 | }, |
197 | ||
198 | #undef TP_FIELDS | |
2eda209b | 199 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ |
1c324e59 MD |
200 | |
201 | #undef TRACEPOINT_EVENT_CLASS | |
202 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
203 | static const struct lttng_event_field __event_fields___##_provider##___##_name[] = { \ | |
204 | _fields \ | |
205 | }; | |
206 | ||
207 | #include TRACEPOINT_INCLUDE | |
208 | ||
209 | /* | |
210 | * Stage 2 of tracepoint event generation. | |
211 | * | |
212 | * Create probe callback prototypes. | |
213 | */ | |
214 | ||
215 | /* Reset all macros within TRACEPOINT_EVENT */ | |
216 | #include <lttng/ust-tracepoint-event-reset.h> | |
217 | ||
218 | #undef TP_ARGS | |
2eda209b | 219 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
220 | |
221 | #undef TRACEPOINT_EVENT_CLASS | |
222 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
223 | static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); | |
224 | ||
225 | #include TRACEPOINT_INCLUDE | |
226 | ||
227 | /* | |
228 | * Stage 3 of tracepoint event generation. | |
229 | * | |
1c324e59 MD |
230 | * Create static inline function that calculates event size. |
231 | */ | |
232 | ||
233 | /* Reset all macros within TRACEPOINT_EVENT */ | |
234 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 235 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 236 | |
4774c8f3 | 237 | #undef _ctf_integer_ext |
180901e6 | 238 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
239 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
240 | __event_len += sizeof(_type); | |
241 | ||
4774c8f3 | 242 | #undef _ctf_float |
180901e6 | 243 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
244 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
245 | __event_len += sizeof(_type); | |
246 | ||
4774c8f3 | 247 | #undef _ctf_array_encoded |
180901e6 | 248 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
249 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
250 | __event_len += sizeof(_type) * (_length); | |
251 | ||
4774c8f3 MD |
252 | #undef _ctf_sequence_encoded |
253 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
180901e6 | 254 | _src_length, _encoding, _nowrite) \ |
1c324e59 MD |
255 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
256 | __event_len += sizeof(_length_type); \ | |
257 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
258 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ | |
259 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
260 | __dynamic_len_idx++; | |
261 | ||
4774c8f3 | 262 | #undef _ctf_string |
180901e6 | 263 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
264 | __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1; |
265 | ||
266 | #undef TP_ARGS | |
2eda209b | 267 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
268 | |
269 | #undef TP_FIELDS | |
2eda209b | 270 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
271 | |
272 | #undef TRACEPOINT_EVENT_CLASS | |
a8909ba5 PW |
273 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ |
274 | static inline lttng_ust_notrace \ | |
275 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)); \ | |
276 | static inline \ | |
277 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
278 | { \ |
279 | size_t __event_len = 0; \ | |
280 | unsigned int __dynamic_len_idx = 0; \ | |
281 | \ | |
282 | if (0) \ | |
283 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
284 | _fields \ | |
285 | return __event_len; \ | |
286 | } | |
287 | ||
288 | #include TRACEPOINT_INCLUDE | |
289 | ||
1ddfd641 MD |
290 | /* |
291 | * Stage 3.1 of tracepoint event generation. | |
292 | * | |
293 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 294 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
295 | */ |
296 | ||
297 | /* Reset all macros within TRACEPOINT_EVENT */ | |
298 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
299 | #include <lttng/ust-tracepoint-event-write.h> |
300 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 301 | |
4774c8f3 | 302 | #undef _ctf_integer_ext |
180901e6 | 303 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
fa099471 | 304 | if (lttng_is_signed_type(_type)) { \ |
3ebeea0d MD |
305 | int64_t __ctf_tmp_int64; \ |
306 | switch (sizeof(_type)) { \ | |
307 | case 1: \ | |
308 | { \ | |
309 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
310 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
311 | break; \ | |
312 | } \ | |
313 | case 2: \ | |
314 | { \ | |
315 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
316 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
317 | break; \ | |
318 | } \ | |
319 | case 4: \ | |
320 | { \ | |
321 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
322 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
323 | break; \ | |
324 | } \ | |
325 | case 8: \ | |
326 | { \ | |
327 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
328 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
329 | break; \ | |
330 | } \ | |
331 | default: \ | |
332 | abort(); \ | |
333 | }; \ | |
fa099471 MD |
334 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ |
335 | } else { \ | |
3ebeea0d MD |
336 | uint64_t __ctf_tmp_uint64; \ |
337 | switch (sizeof(_type)) { \ | |
338 | case 1: \ | |
339 | { \ | |
340 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
341 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
342 | break; \ | |
343 | } \ | |
344 | case 2: \ | |
345 | { \ | |
346 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
347 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
348 | break; \ | |
349 | } \ | |
350 | case 4: \ | |
351 | { \ | |
352 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
353 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
354 | break; \ | |
355 | } \ | |
356 | case 8: \ | |
357 | { \ | |
358 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
359 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
360 | break; \ | |
361 | } \ | |
362 | default: \ | |
363 | abort(); \ | |
364 | }; \ | |
fa099471 MD |
365 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ |
366 | } \ | |
1ddfd641 MD |
367 | __stack_data += sizeof(int64_t); |
368 | ||
4774c8f3 | 369 | #undef _ctf_float |
180901e6 | 370 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
371 | { \ |
372 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
373 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
374 | __stack_data += sizeof(double); \ | |
375 | } | |
1ddfd641 | 376 | |
4774c8f3 | 377 | #undef _ctf_array_encoded |
180901e6 | 378 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
fa099471 MD |
379 | { \ |
380 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 381 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
382 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
383 | __stack_data += sizeof(unsigned long); \ | |
c4261b0a | 384 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \ |
fa099471 MD |
385 | __stack_data += sizeof(void **); \ |
386 | } | |
1ddfd641 | 387 | |
4774c8f3 MD |
388 | #undef _ctf_sequence_encoded |
389 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
180901e6 | 390 | _src_length, _encoding, _nowrite) \ |
fa099471 MD |
391 | { \ |
392 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 393 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
394 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
395 | __stack_data += sizeof(unsigned long); \ | |
c4261b0a | 396 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \ |
fa099471 MD |
397 | __stack_data += sizeof(void **); \ |
398 | } | |
1ddfd641 | 399 | |
4774c8f3 | 400 | #undef _ctf_string |
180901e6 | 401 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 402 | { \ |
59034aab | 403 | const void *__ctf_tmp_ptr = (_src); \ |
c4261b0a | 404 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \ |
27f4b609 | 405 | __stack_data += sizeof(void **); \ |
fa099471 | 406 | } |
1ddfd641 MD |
407 | |
408 | #undef TP_ARGS | |
409 | #define TP_ARGS(...) __VA_ARGS__ | |
410 | ||
411 | #undef TP_FIELDS | |
412 | #define TP_FIELDS(...) __VA_ARGS__ | |
413 | ||
414 | #undef TRACEPOINT_EVENT_CLASS | |
415 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
416 | static inline \ | |
417 | void __event_prepare_filter_stack__##_provider##___##_name(char *__stack_data,\ | |
418 | _TP_ARGS_DATA_PROTO(_args)) \ | |
419 | { \ | |
420 | _fields \ | |
421 | } | |
422 | ||
423 | #include TRACEPOINT_INCLUDE | |
424 | ||
425 | ||
426 | ||
1c324e59 | 427 | /* |
df854e41 | 428 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
429 | * |
430 | * Create static inline function that calculates event payload alignment. | |
431 | */ | |
432 | ||
433 | /* Reset all macros within TRACEPOINT_EVENT */ | |
434 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 435 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 436 | |
4774c8f3 | 437 | #undef _ctf_integer_ext |
180901e6 | 438 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
439 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
440 | ||
4774c8f3 | 441 | #undef _ctf_float |
180901e6 | 442 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
443 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
444 | ||
4774c8f3 | 445 | #undef _ctf_array_encoded |
180901e6 | 446 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
447 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
448 | ||
4774c8f3 MD |
449 | #undef _ctf_sequence_encoded |
450 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
180901e6 | 451 | _src_length, _encoding, _nowrite) \ |
1c324e59 MD |
452 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
453 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); | |
454 | ||
4774c8f3 | 455 | #undef _ctf_string |
180901e6 | 456 | #define _ctf_string(_item, _src, _nowrite) |
1c324e59 MD |
457 | |
458 | #undef TP_ARGS | |
2eda209b | 459 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
460 | |
461 | #undef TP_FIELDS | |
2eda209b | 462 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
463 | |
464 | #undef TRACEPOINT_EVENT_CLASS | |
465 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
466 | static inline lttng_ust_notrace \ |
467 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)); \ | |
1c324e59 MD |
468 | static inline \ |
469 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
470 | { \ | |
471 | size_t __event_align = 1; \ | |
472 | _fields \ | |
473 | return __event_align; \ | |
474 | } | |
475 | ||
476 | #include TRACEPOINT_INCLUDE | |
477 | ||
478 | ||
479 | /* | |
df854e41 | 480 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
481 | * |
482 | * Create the probe function. This function calls event size calculation | |
483 | * and writes event data into the buffer. | |
484 | */ | |
485 | ||
486 | /* Reset all macros within TRACEPOINT_EVENT */ | |
487 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 488 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 489 | |
4774c8f3 | 490 | #undef _ctf_integer_ext |
180901e6 | 491 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
492 | { \ |
493 | _type __tmp = (_src); \ | |
494 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
495 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
496 | } | |
497 | ||
4774c8f3 | 498 | #undef _ctf_float |
180901e6 | 499 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
500 | { \ |
501 | _type __tmp = (_src); \ | |
502 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
503 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
504 | } | |
505 | ||
4774c8f3 | 506 | #undef _ctf_array_encoded |
180901e6 | 507 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
508 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
509 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); | |
510 | ||
4774c8f3 MD |
511 | #undef _ctf_sequence_encoded |
512 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
180901e6 | 513 | _src_length, _encoding, _nowrite) \ |
1c324e59 | 514 | { \ |
d71b57b9 | 515 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
1c324e59 MD |
516 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
517 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
518 | } \ | |
519 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
520 | __chan->ops->event_write(&__ctx, _src, \ | |
521 | sizeof(_type) * __get_dynamic_len(dest)); | |
522 | ||
a44c74d9 MD |
523 | /* |
524 | * __chan->ops->u.has_strcpy is a flag letting us know if the LTTng-UST | |
525 | * tracepoint provider ABI implements event_strcpy. This dynamic check | |
526 | * can be removed when the tracepoint provider ABI moves to 2. | |
527 | */ | |
528 | #if (LTTNG_UST_PROVIDER_MAJOR > 1) | |
529 | #error "Tracepoint probe provider major version has changed. Please remove dynamic check for has_strcpy." | |
530 | #endif | |
531 | ||
4774c8f3 | 532 | #undef _ctf_string |
180901e6 | 533 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 | 534 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
a44c74d9 MD |
535 | if (__chan->ops->u.has_strcpy) \ |
536 | __chan->ops->event_strcpy(&__ctx, _src, \ | |
537 | __get_dynamic_len(dest)); \ | |
538 | else \ | |
539 | __chan->ops->event_write(&__ctx, _src, \ | |
540 | __get_dynamic_len(dest)); | |
1c324e59 MD |
541 | |
542 | /* Beware: this get len actually consumes the len value */ | |
543 | #undef __get_dynamic_len | |
d71b57b9 | 544 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 MD |
545 | |
546 | #undef TP_ARGS | |
2eda209b | 547 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
548 | |
549 | #undef TP_FIELDS | |
2eda209b | 550 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 551 | |
95c25348 PW |
552 | /* |
553 | * For state dump, check that "session" argument (mandatory) matches the | |
554 | * session this event belongs to. Ensures that we write state dump data only | |
555 | * into the started session, not into all sessions. | |
556 | */ | |
557 | #undef _TP_SESSION_CHECK | |
558 | #ifdef TP_SESSION_CHECK | |
559 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
560 | #else /* TP_SESSION_CHECK */ | |
561 | #define _TP_SESSION_CHECK(session, csession) 1 | |
562 | #endif /* TP_SESSION_CHECK */ | |
563 | ||
1ddfd641 MD |
564 | /* |
565 | * Using twice size for filter stack data to hold size and pointer for | |
566 | * each field (worse case). For integers, max size required is 64-bit. | |
567 | * Same for double-precision floats. Those fit within | |
568 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 569 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 570 | */ |
1c324e59 MD |
571 | #undef TRACEPOINT_EVENT_CLASS |
572 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
573 | static lttng_ust_notrace \ |
574 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
575 | static \ | |
576 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 577 | { \ |
46d52200 | 578 | struct lttng_event *__event = (struct lttng_event *) __tp_data; \ |
7dd08bec | 579 | struct lttng_channel *__chan = __event->chan; \ |
f280cb51 | 580 | struct lttng_ust_lib_ring_buffer_ctx __ctx; \ |
1c324e59 MD |
581 | size_t __event_len, __event_align; \ |
582 | size_t __dynamic_len_idx = 0; \ | |
d71b57b9 | 583 | union { \ |
1ddfd641 MD |
584 | size_t __dynamic_len[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \ |
585 | char __filter_stack_data[2 * sizeof(unsigned long) * _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \ | |
d71b57b9 | 586 | } __stackvar; \ |
1c324e59 MD |
587 | int __ret; \ |
588 | \ | |
589 | if (0) \ | |
590 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
95c25348 PW |
591 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
592 | return; \ | |
1c324e59 MD |
593 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->session->active))) \ |
594 | return; \ | |
595 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->enabled))) \ | |
596 | return; \ | |
597 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
598 | return; \ | |
1b436e01 MD |
599 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
600 | return; \ | |
e58095ef | 601 | if (caa_unlikely(!cds_list_empty(&__event->bytecode_runtime_head))) { \ |
f488575f | 602 | struct lttng_bytecode_runtime *bc_runtime; \ |
dcdeaff0 | 603 | int __filter_record = __event->has_enablers_without_bytecode; \ |
f488575f | 604 | \ |
1ddfd641 | 605 | __event_prepare_filter_stack__##_provider##___##_name(__stackvar.__filter_stack_data, \ |
f488575f | 606 | _TP_ARGS_DATA_VAR(_args)); \ |
000b8662 | 607 | tp_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
61ce3223 | 608 | if (caa_unlikely(bc_runtime->filter(bc_runtime, \ |
8a92ed2a MD |
609 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
610 | __filter_record = 1; \ | |
f488575f | 611 | } \ |
8a92ed2a | 612 | if (caa_likely(!__filter_record)) \ |
61ce3223 | 613 | return; \ |
1ddfd641 MD |
614 | } \ |
615 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
1c324e59 MD |
616 | _TP_ARGS_DATA_VAR(_args)); \ |
617 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
618 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ | |
619 | __event_align, -1, __chan->handle); \ | |
96f85541 | 620 | __ctx.ip = __builtin_return_address(0); \ |
1c324e59 MD |
621 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
622 | if (__ret < 0) \ | |
623 | return; \ | |
624 | _fields \ | |
625 | __chan->ops->event_commit(&__ctx); \ | |
626 | } | |
627 | ||
628 | #include TRACEPOINT_INCLUDE | |
629 | ||
630 | #undef __get_dynamic_len | |
631 | ||
68755429 MD |
632 | /* |
633 | * Stage 5.1 of tracepoint event generation. | |
634 | * | |
635 | * Create probe signature | |
636 | */ | |
637 | ||
638 | /* Reset all macros within TRACEPOINT_EVENT */ | |
639 | #include <lttng/ust-tracepoint-event-reset.h> | |
640 | ||
641 | #undef TP_ARGS | |
2eda209b | 642 | #define TP_ARGS(...) __VA_ARGS__ |
9eb06182 MD |
643 | |
644 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 MD |
645 | |
646 | #undef TRACEPOINT_EVENT_CLASS | |
647 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
648 | const char __tp_event_signature___##_provider##___##_name[] = \ | |
9eb06182 | 649 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
650 | |
651 | #include TRACEPOINT_INCLUDE | |
652 | ||
9eb06182 MD |
653 | #undef _TP_EXTRACT_STRING2 |
654 | ||
05ceaafd | 655 | /* |
882a56d7 | 656 | * Stage 6 of tracepoint event generation. |
1c324e59 | 657 | * |
df854e41 MD |
658 | * Tracepoint loglevel mapping definition generation. We generate a |
659 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
660 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
661 | * the compiler will complain. | |
05ceaafd MD |
662 | */ |
663 | ||
664 | /* Reset all macros within TRACEPOINT_EVENT */ | |
665 | #include <lttng/ust-tracepoint-event-reset.h> | |
666 | ||
667 | #undef TRACEPOINT_LOGLEVEL | |
457a6b58 MD |
668 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
669 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
670 | static const int *_loglevel___##__provider##___##__name = \ | |
671 | &_loglevel_value___##__provider##___##__name; | |
df854e41 MD |
672 | |
673 | #include TRACEPOINT_INCLUDE | |
674 | ||
6ddc916d MD |
675 | /* |
676 | * Stage 6.1 of tracepoint event generation. | |
677 | * | |
678 | * Tracepoint UML URI info. | |
679 | */ | |
680 | ||
681 | /* Reset all macros within TRACEPOINT_EVENT */ | |
682 | #include <lttng/ust-tracepoint-event-reset.h> | |
683 | ||
684 | #undef TRACEPOINT_MODEL_EMF_URI | |
685 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
686 | static const char *_model_emf_uri___##__provider##___##__name = __uri; | |
687 | ||
688 | #include TRACEPOINT_INCLUDE | |
689 | ||
df854e41 | 690 | /* |
882a56d7 | 691 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
692 | * |
693 | * Create events description structures. We use a weakref because | |
694 | * loglevels are optional. If not declared, the event will point to the | |
695 | * a loglevel that contains NULL. | |
696 | */ | |
697 | ||
698 | /* Reset all macros within TRACEPOINT_EVENT */ | |
699 | #include <lttng/ust-tracepoint-event-reset.h> | |
700 | ||
701 | #undef TRACEPOINT_EVENT_INSTANCE | |
702 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
703 | static const int * \ |
704 | __ref_loglevel___##_provider##___##_name \ | |
705 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
706 | static const char * \ |
707 | __ref_model_emf_uri___##_provider##___##_name \ | |
708 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
df854e41 | 709 | const struct lttng_event_desc __event_desc___##_provider##_##_name = { \ |
df854e41 | 710 | .name = #_provider ":" #_name, \ |
fbdeb5ec | 711 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template,\ |
46d52200 ZT |
712 | .ctx = NULL, \ |
713 | .fields = __event_fields___##_provider##___##_template, \ | |
df854e41 | 714 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template), \ |
882a56d7 | 715 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 716 | .signature = __tp_event_signature___##_provider##___##_template, \ |
46d52200 | 717 | .u = { .ext = { .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name } }, \ |
df854e41 MD |
718 | }; |
719 | ||
720 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 721 | |
df854e41 | 722 | /* |
882a56d7 | 723 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
724 | * |
725 | * Create array of events. | |
726 | */ | |
727 | ||
728 | /* Reset all macros within TRACEPOINT_EVENT */ | |
729 | #include <lttng/ust-tracepoint-event-reset.h> | |
730 | ||
731 | #undef TRACEPOINT_EVENT_INSTANCE | |
732 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
733 | &__event_desc___##_provider##_##_name, | |
734 | ||
735 | static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { | |
05ceaafd MD |
736 | #include TRACEPOINT_INCLUDE |
737 | }; | |
738 | ||
df854e41 | 739 | |
05ceaafd | 740 | /* |
882a56d7 | 741 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
742 | * |
743 | * Create a toplevel descriptor for the whole probe. | |
744 | */ | |
745 | ||
746 | /* non-const because list head will be modified when registered. */ | |
747 | static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { | |
df854e41 | 748 | .provider = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd MD |
749 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
750 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)), | |
46d52200 ZT |
751 | .head = { NULL, NULL }, |
752 | .lazy_init_head = { NULL, NULL }, | |
753 | .lazy = 0, | |
71d31690 MD |
754 | .major = LTTNG_UST_PROVIDER_MAJOR, |
755 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
756 | }; |
757 | ||
f0cc794d MD |
758 | static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER); |
759 | ||
05ceaafd | 760 | /* |
882a56d7 | 761 | * Stage 9 of tracepoint event generation. |
05ceaafd | 762 | * |
1c324e59 | 763 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
764 | * |
765 | * Generate the constructor as an externally visible symbol for use when | |
766 | * linking the probe statically. | |
f0cc794d MD |
767 | * |
768 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
769 | */ |
770 | ||
771 | /* Reset all macros within TRACEPOINT_EVENT */ | |
772 | #include <lttng/ust-tracepoint-event-reset.h> | |
a8909ba5 PW |
773 | static void lttng_ust_notrace __attribute__((constructor)) |
774 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void); | |
775 | static void | |
1c324e59 MD |
776 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) |
777 | { | |
778 | int ret; | |
779 | ||
f0cc794d MD |
780 | if (_TP_COMBINE_TOKENS(__probe_register_refcount___, |
781 | TRACEPOINT_PROVIDER)++) { | |
782 | return; | |
783 | } | |
e8bd1da7 MD |
784 | /* |
785 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
786 | * static inline function that ensures every probe PROVIDER | |
787 | * argument match the provider within which they appear. It | |
788 | * calls empty static inline functions, and therefore has no | |
789 | * runtime effect. However, if it detects an error, a linker | |
790 | * error will appear. | |
791 | */ | |
792 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
7dd08bec | 793 | ret = lttng_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
7d381d6e MD |
794 | if (ret) { |
795 | fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe. Duplicate registration of tracepoint probes having the same name is not allowed.\n", ret); | |
796 | abort(); | |
797 | } | |
1c324e59 MD |
798 | } |
799 | ||
a8909ba5 PW |
800 | static void lttng_ust_notrace __attribute__((destructor)) |
801 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void); | |
802 | static void | |
1c324e59 MD |
803 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) |
804 | { | |
f0cc794d MD |
805 | if (--_TP_COMBINE_TOKENS(__probe_register_refcount___, |
806 | TRACEPOINT_PROVIDER)) { | |
807 | return; | |
808 | } | |
7dd08bec | 809 | lttng_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 | 810 | } |
628e1d81 MD |
811 | |
812 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER); |