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 | ||
23 | #include <stdio.h> | |
24 | #include <urcu/compiler.h> | |
f488575f | 25 | #include <urcu/rculist.h> |
1c324e59 | 26 | #include <lttng/ust-events.h> |
1c324e59 | 27 | #include <lttng/ringbuffer-config.h> |
a8909ba5 | 28 | #include <lttng/ust-compiler.h> |
44c72f10 | 29 | #include <string.h> |
1c324e59 | 30 | |
1c324e59 MD |
31 | /* |
32 | * TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the | |
33 | * same arguments and having the same field layout. | |
34 | * | |
35 | * TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with | |
36 | * its own provider and name. It refers to a class (template). | |
37 | * | |
38 | * TRACEPOINT_EVENT declared both a class and an instance and does a | |
39 | * direct mapping from the instance to the class. | |
40 | */ | |
41 | ||
42 | #undef TRACEPOINT_EVENT | |
43 | #define TRACEPOINT_EVENT(_provider, _name, _args, _fields) \ | |
44 | TRACEPOINT_EVENT_CLASS(_provider, _name, \ | |
45 | _TP_PARAMS(_args), \ | |
46 | _TP_PARAMS(_fields)) \ | |
47 | TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \ | |
68755429 | 48 | _TP_PARAMS(_args)) |
1c324e59 MD |
49 | |
50 | /* Helpers */ | |
51 | #define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) | |
52 | ||
53 | #define _tp_max_t(type, x, y) \ | |
54 | ({ \ | |
55 | type __max1 = (x); \ | |
56 | type __max2 = (y); \ | |
57 | __max1 > __max2 ? __max1: __max2; \ | |
58 | }) | |
59 | ||
60 | /* | |
61 | * Stage 0 of tracepoint event generation. | |
62 | * | |
63 | * Check that each TRACEPOINT_EVENT provider argument match the | |
64 | * TRACEPOINT_PROVIDER by creating dummy callbacks. | |
65 | */ | |
66 | ||
67 | /* Reset all macros within TRACEPOINT_EVENT */ | |
68 | #include <lttng/ust-tracepoint-event-reset.h> | |
69 | ||
70 | static inline | |
71 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void) | |
72 | { | |
73 | } | |
74 | ||
75 | #undef TRACEPOINT_EVENT_CLASS | |
76 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
77 | __tracepoint_provider_mismatch_##_provider(); | |
78 | ||
79 | #undef TRACEPOINT_EVENT_INSTANCE | |
80 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
81 | __tracepoint_provider_mismatch_##_provider(); | |
82 | ||
e8bd1da7 | 83 | static inline |
1c324e59 MD |
84 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void) |
85 | { | |
86 | #include TRACEPOINT_INCLUDE | |
87 | } | |
88 | ||
f56cd1d5 MD |
89 | /* |
90 | * Stage 0.1 of tracepoint event generation. | |
91 | * | |
92 | * Check that each TRACEPOINT_EVENT provider:name does not exceed the | |
93 | * tracepoint name length limit. | |
94 | */ | |
95 | ||
96 | /* Reset all macros within TRACEPOINT_EVENT */ | |
97 | #include <lttng/ust-tracepoint-event-reset.h> | |
98 | ||
99 | #undef TRACEPOINT_EVENT_INSTANCE | |
100 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
101 | static const char \ | |
102 | __tp_name_len_check##_provider##___##_name[LTTNG_UST_SYM_NAME_LEN] \ | |
103 | __attribute__((unused)) = \ | |
104 | #_provider ":" #_name; | |
105 | ||
106 | #include TRACEPOINT_INCLUDE | |
107 | ||
1c324e59 MD |
108 | /* |
109 | * Stage 1 of tracepoint event generation. | |
110 | * | |
111 | * Create event field type metadata section. | |
112 | * Each event produce an array of fields. | |
113 | */ | |
114 | ||
115 | /* Reset all macros within TRACEPOINT_EVENT */ | |
116 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
117 | #include <lttng/ust-tracepoint-event-write.h> |
118 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 119 | |
4774c8f3 | 120 | #undef _ctf_integer_ext |
180901e6 | 121 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
122 | { \ |
123 | .name = #_item, \ | |
124 | .type = __type_integer(_type, _byte_order, _base, none),\ | |
180901e6 | 125 | .nowrite = _nowrite, \ |
1c324e59 MD |
126 | }, |
127 | ||
4774c8f3 | 128 | #undef _ctf_float |
180901e6 | 129 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
130 | { \ |
131 | .name = #_item, \ | |
132 | .type = __type_float(_type), \ | |
180901e6 | 133 | .nowrite = _nowrite, \ |
1c324e59 MD |
134 | }, |
135 | ||
4774c8f3 | 136 | #undef _ctf_array_encoded |
180901e6 | 137 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
138 | { \ |
139 | .name = #_item, \ | |
140 | .type = \ | |
141 | { \ | |
142 | .atype = atype_array, \ | |
143 | .u.array = \ | |
144 | { \ | |
145 | .length = _length, \ | |
146 | .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \ | |
147 | }, \ | |
148 | }, \ | |
180901e6 | 149 | .nowrite = _nowrite, \ |
1c324e59 MD |
150 | }, |
151 | ||
4774c8f3 MD |
152 | #undef _ctf_sequence_encoded |
153 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
180901e6 | 154 | _length_type, _src_length, _encoding, _nowrite) \ |
1c324e59 MD |
155 | { \ |
156 | .name = #_item, \ | |
157 | .type = \ | |
158 | { \ | |
159 | .atype = atype_sequence, \ | |
160 | .u.sequence = \ | |
161 | { \ | |
162 | .length_type = __type_integer(_length_type, BYTE_ORDER, 10, none), \ | |
163 | .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \ | |
164 | }, \ | |
165 | }, \ | |
180901e6 | 166 | .nowrite = _nowrite, \ |
1c324e59 MD |
167 | }, |
168 | ||
4774c8f3 | 169 | #undef _ctf_string |
180901e6 | 170 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
171 | { \ |
172 | .name = #_item, \ | |
173 | .type = \ | |
174 | { \ | |
175 | .atype = atype_string, \ | |
176 | .u.basic.string.encoding = lttng_encode_UTF8, \ | |
177 | }, \ | |
180901e6 | 178 | .nowrite = _nowrite, \ |
1c324e59 MD |
179 | }, |
180 | ||
181 | #undef TP_FIELDS | |
2eda209b | 182 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ |
1c324e59 MD |
183 | |
184 | #undef TRACEPOINT_EVENT_CLASS | |
185 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
186 | static const struct lttng_event_field __event_fields___##_provider##___##_name[] = { \ | |
187 | _fields \ | |
188 | }; | |
189 | ||
190 | #include TRACEPOINT_INCLUDE | |
191 | ||
192 | /* | |
193 | * Stage 2 of tracepoint event generation. | |
194 | * | |
195 | * Create probe callback prototypes. | |
196 | */ | |
197 | ||
198 | /* Reset all macros within TRACEPOINT_EVENT */ | |
199 | #include <lttng/ust-tracepoint-event-reset.h> | |
200 | ||
201 | #undef TP_ARGS | |
2eda209b | 202 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
203 | |
204 | #undef TRACEPOINT_EVENT_CLASS | |
205 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
206 | static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); | |
207 | ||
208 | #include TRACEPOINT_INCLUDE | |
209 | ||
210 | /* | |
211 | * Stage 3 of tracepoint event generation. | |
212 | * | |
1c324e59 MD |
213 | * Create static inline function that calculates event size. |
214 | */ | |
215 | ||
216 | /* Reset all macros within TRACEPOINT_EVENT */ | |
217 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 218 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 219 | |
4774c8f3 | 220 | #undef _ctf_integer_ext |
180901e6 | 221 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
222 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
223 | __event_len += sizeof(_type); | |
224 | ||
4774c8f3 | 225 | #undef _ctf_float |
180901e6 | 226 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
227 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
228 | __event_len += sizeof(_type); | |
229 | ||
4774c8f3 | 230 | #undef _ctf_array_encoded |
180901e6 | 231 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
232 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
233 | __event_len += sizeof(_type) * (_length); | |
234 | ||
4774c8f3 MD |
235 | #undef _ctf_sequence_encoded |
236 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
180901e6 | 237 | _src_length, _encoding, _nowrite) \ |
1c324e59 MD |
238 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
239 | __event_len += sizeof(_length_type); \ | |
240 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
241 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ | |
242 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
243 | __dynamic_len_idx++; | |
244 | ||
4774c8f3 | 245 | #undef _ctf_string |
180901e6 | 246 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
247 | __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1; |
248 | ||
249 | #undef TP_ARGS | |
2eda209b | 250 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
251 | |
252 | #undef TP_FIELDS | |
2eda209b | 253 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
254 | |
255 | #undef TRACEPOINT_EVENT_CLASS | |
a8909ba5 PW |
256 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ |
257 | static inline lttng_ust_notrace \ | |
258 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)); \ | |
259 | static inline \ | |
260 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
261 | { \ |
262 | size_t __event_len = 0; \ | |
263 | unsigned int __dynamic_len_idx = 0; \ | |
264 | \ | |
265 | if (0) \ | |
266 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
267 | _fields \ | |
268 | return __event_len; \ | |
269 | } | |
270 | ||
271 | #include TRACEPOINT_INCLUDE | |
272 | ||
1ddfd641 MD |
273 | /* |
274 | * Stage 3.1 of tracepoint event generation. | |
275 | * | |
276 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 277 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
278 | */ |
279 | ||
280 | /* Reset all macros within TRACEPOINT_EVENT */ | |
281 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
282 | #include <lttng/ust-tracepoint-event-write.h> |
283 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 284 | |
4774c8f3 | 285 | #undef _ctf_integer_ext |
180901e6 | 286 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
fa099471 MD |
287 | if (lttng_is_signed_type(_type)) { \ |
288 | int64_t __ctf_tmp_int64 = (int64_t) (_type) (_src); \ | |
289 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
290 | } else { \ | |
291 | uint64_t __ctf_tmp_uint64 = (uint64_t) (_type) (_src); \ | |
292 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
293 | } \ | |
1ddfd641 MD |
294 | __stack_data += sizeof(int64_t); |
295 | ||
4774c8f3 | 296 | #undef _ctf_float |
180901e6 | 297 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
298 | { \ |
299 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
300 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
301 | __stack_data += sizeof(double); \ | |
302 | } | |
1ddfd641 | 303 | |
4774c8f3 | 304 | #undef _ctf_array_encoded |
180901e6 | 305 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
fa099471 MD |
306 | { \ |
307 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 308 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
309 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
310 | __stack_data += sizeof(unsigned long); \ | |
c4261b0a | 311 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \ |
fa099471 MD |
312 | __stack_data += sizeof(void **); \ |
313 | } | |
1ddfd641 | 314 | |
4774c8f3 MD |
315 | #undef _ctf_sequence_encoded |
316 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
180901e6 | 317 | _src_length, _encoding, _nowrite) \ |
fa099471 MD |
318 | { \ |
319 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 320 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
321 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
322 | __stack_data += sizeof(unsigned long); \ | |
c4261b0a | 323 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \ |
fa099471 MD |
324 | __stack_data += sizeof(void **); \ |
325 | } | |
1ddfd641 | 326 | |
4774c8f3 | 327 | #undef _ctf_string |
180901e6 | 328 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 329 | { \ |
59034aab | 330 | const void *__ctf_tmp_ptr = (_src); \ |
c4261b0a | 331 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void **)); \ |
27f4b609 | 332 | __stack_data += sizeof(void **); \ |
fa099471 | 333 | } |
1ddfd641 MD |
334 | |
335 | #undef TP_ARGS | |
336 | #define TP_ARGS(...) __VA_ARGS__ | |
337 | ||
338 | #undef TP_FIELDS | |
339 | #define TP_FIELDS(...) __VA_ARGS__ | |
340 | ||
341 | #undef TRACEPOINT_EVENT_CLASS | |
342 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
343 | static inline \ | |
344 | void __event_prepare_filter_stack__##_provider##___##_name(char *__stack_data,\ | |
345 | _TP_ARGS_DATA_PROTO(_args)) \ | |
346 | { \ | |
347 | _fields \ | |
348 | } | |
349 | ||
350 | #include TRACEPOINT_INCLUDE | |
351 | ||
352 | ||
353 | ||
1c324e59 | 354 | /* |
df854e41 | 355 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
356 | * |
357 | * Create static inline function that calculates event payload alignment. | |
358 | */ | |
359 | ||
360 | /* Reset all macros within TRACEPOINT_EVENT */ | |
361 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 362 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 363 | |
4774c8f3 | 364 | #undef _ctf_integer_ext |
180901e6 | 365 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
366 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
367 | ||
4774c8f3 | 368 | #undef _ctf_float |
180901e6 | 369 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
370 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
371 | ||
4774c8f3 | 372 | #undef _ctf_array_encoded |
180901e6 | 373 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
374 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
375 | ||
4774c8f3 MD |
376 | #undef _ctf_sequence_encoded |
377 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
180901e6 | 378 | _src_length, _encoding, _nowrite) \ |
1c324e59 MD |
379 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
380 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); | |
381 | ||
4774c8f3 | 382 | #undef _ctf_string |
180901e6 | 383 | #define _ctf_string(_item, _src, _nowrite) |
1c324e59 MD |
384 | |
385 | #undef TP_ARGS | |
2eda209b | 386 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
387 | |
388 | #undef TP_FIELDS | |
2eda209b | 389 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
390 | |
391 | #undef TRACEPOINT_EVENT_CLASS | |
392 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
393 | static inline lttng_ust_notrace \ |
394 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)); \ | |
1c324e59 MD |
395 | static inline \ |
396 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
397 | { \ | |
398 | size_t __event_align = 1; \ | |
399 | _fields \ | |
400 | return __event_align; \ | |
401 | } | |
402 | ||
403 | #include TRACEPOINT_INCLUDE | |
404 | ||
405 | ||
406 | /* | |
df854e41 | 407 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
408 | * |
409 | * Create the probe function. This function calls event size calculation | |
410 | * and writes event data into the buffer. | |
411 | */ | |
412 | ||
413 | /* Reset all macros within TRACEPOINT_EVENT */ | |
414 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 415 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 416 | |
4774c8f3 | 417 | #undef _ctf_integer_ext |
180901e6 | 418 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
419 | { \ |
420 | _type __tmp = (_src); \ | |
421 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
422 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
423 | } | |
424 | ||
4774c8f3 | 425 | #undef _ctf_float |
180901e6 | 426 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
427 | { \ |
428 | _type __tmp = (_src); \ | |
429 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
430 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
431 | } | |
432 | ||
4774c8f3 | 433 | #undef _ctf_array_encoded |
180901e6 | 434 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
435 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
436 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); | |
437 | ||
4774c8f3 MD |
438 | #undef _ctf_sequence_encoded |
439 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
180901e6 | 440 | _src_length, _encoding, _nowrite) \ |
1c324e59 | 441 | { \ |
d71b57b9 | 442 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
1c324e59 MD |
443 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
444 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
445 | } \ | |
446 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
447 | __chan->ops->event_write(&__ctx, _src, \ | |
448 | sizeof(_type) * __get_dynamic_len(dest)); | |
449 | ||
4774c8f3 | 450 | #undef _ctf_string |
180901e6 | 451 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
452 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
453 | __chan->ops->event_write(&__ctx, _src, __get_dynamic_len(dest)); | |
454 | ||
455 | /* Beware: this get len actually consumes the len value */ | |
456 | #undef __get_dynamic_len | |
d71b57b9 | 457 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 MD |
458 | |
459 | #undef TP_ARGS | |
2eda209b | 460 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
461 | |
462 | #undef TP_FIELDS | |
2eda209b | 463 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 464 | |
1ddfd641 MD |
465 | /* |
466 | * Using twice size for filter stack data to hold size and pointer for | |
467 | * each field (worse case). For integers, max size required is 64-bit. | |
468 | * Same for double-precision floats. Those fit within | |
469 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 470 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 471 | */ |
1c324e59 MD |
472 | #undef TRACEPOINT_EVENT_CLASS |
473 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
474 | static lttng_ust_notrace \ |
475 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
476 | static \ | |
477 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 478 | { \ |
7dd08bec MD |
479 | struct lttng_event *__event = __tp_data; \ |
480 | struct lttng_channel *__chan = __event->chan; \ | |
f280cb51 | 481 | struct lttng_ust_lib_ring_buffer_ctx __ctx; \ |
1c324e59 MD |
482 | size_t __event_len, __event_align; \ |
483 | size_t __dynamic_len_idx = 0; \ | |
d71b57b9 | 484 | union { \ |
1ddfd641 MD |
485 | size_t __dynamic_len[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \ |
486 | char __filter_stack_data[2 * sizeof(unsigned long) * _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \ | |
d71b57b9 | 487 | } __stackvar; \ |
1c324e59 MD |
488 | int __ret; \ |
489 | \ | |
490 | if (0) \ | |
491 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
492 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->session->active))) \ | |
493 | return; \ | |
494 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->enabled))) \ | |
495 | return; \ | |
496 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
497 | return; \ | |
e58095ef | 498 | if (caa_unlikely(!cds_list_empty(&__event->bytecode_runtime_head))) { \ |
f488575f | 499 | struct lttng_bytecode_runtime *bc_runtime; \ |
dcdeaff0 | 500 | int __filter_record = __event->has_enablers_without_bytecode; \ |
f488575f | 501 | \ |
1ddfd641 | 502 | __event_prepare_filter_stack__##_provider##___##_name(__stackvar.__filter_stack_data, \ |
f488575f | 503 | _TP_ARGS_DATA_VAR(_args)); \ |
e58095ef | 504 | cds_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
61ce3223 | 505 | if (caa_unlikely(bc_runtime->filter(bc_runtime, \ |
8a92ed2a MD |
506 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
507 | __filter_record = 1; \ | |
f488575f | 508 | } \ |
8a92ed2a | 509 | if (caa_likely(!__filter_record)) \ |
61ce3223 | 510 | return; \ |
1ddfd641 MD |
511 | } \ |
512 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
1c324e59 MD |
513 | _TP_ARGS_DATA_VAR(_args)); \ |
514 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
515 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ | |
516 | __event_align, -1, __chan->handle); \ | |
517 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
518 | if (__ret < 0) \ | |
519 | return; \ | |
520 | _fields \ | |
521 | __chan->ops->event_commit(&__ctx); \ | |
522 | } | |
523 | ||
524 | #include TRACEPOINT_INCLUDE | |
525 | ||
526 | #undef __get_dynamic_len | |
527 | ||
68755429 MD |
528 | /* |
529 | * Stage 5.1 of tracepoint event generation. | |
530 | * | |
531 | * Create probe signature | |
532 | */ | |
533 | ||
534 | /* Reset all macros within TRACEPOINT_EVENT */ | |
535 | #include <lttng/ust-tracepoint-event-reset.h> | |
536 | ||
537 | #undef TP_ARGS | |
2eda209b | 538 | #define TP_ARGS(...) __VA_ARGS__ |
9eb06182 MD |
539 | |
540 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 MD |
541 | |
542 | #undef TRACEPOINT_EVENT_CLASS | |
543 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
544 | const char __tp_event_signature___##_provider##___##_name[] = \ | |
9eb06182 | 545 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
546 | |
547 | #include TRACEPOINT_INCLUDE | |
548 | ||
9eb06182 MD |
549 | #undef _TP_EXTRACT_STRING2 |
550 | ||
05ceaafd | 551 | /* |
882a56d7 | 552 | * Stage 6 of tracepoint event generation. |
1c324e59 | 553 | * |
df854e41 MD |
554 | * Tracepoint loglevel mapping definition generation. We generate a |
555 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
556 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
557 | * the compiler will complain. | |
05ceaafd MD |
558 | */ |
559 | ||
560 | /* Reset all macros within TRACEPOINT_EVENT */ | |
561 | #include <lttng/ust-tracepoint-event-reset.h> | |
562 | ||
563 | #undef TRACEPOINT_LOGLEVEL | |
457a6b58 MD |
564 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
565 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
566 | static const int *_loglevel___##__provider##___##__name = \ | |
567 | &_loglevel_value___##__provider##___##__name; | |
df854e41 MD |
568 | |
569 | #include TRACEPOINT_INCLUDE | |
570 | ||
6ddc916d MD |
571 | /* |
572 | * Stage 6.1 of tracepoint event generation. | |
573 | * | |
574 | * Tracepoint UML URI info. | |
575 | */ | |
576 | ||
577 | /* Reset all macros within TRACEPOINT_EVENT */ | |
578 | #include <lttng/ust-tracepoint-event-reset.h> | |
579 | ||
580 | #undef TRACEPOINT_MODEL_EMF_URI | |
581 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
582 | static const char *_model_emf_uri___##__provider##___##__name = __uri; | |
583 | ||
584 | #include TRACEPOINT_INCLUDE | |
585 | ||
df854e41 | 586 | /* |
882a56d7 | 587 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
588 | * |
589 | * Create events description structures. We use a weakref because | |
590 | * loglevels are optional. If not declared, the event will point to the | |
591 | * a loglevel that contains NULL. | |
592 | */ | |
593 | ||
594 | /* Reset all macros within TRACEPOINT_EVENT */ | |
595 | #include <lttng/ust-tracepoint-event-reset.h> | |
596 | ||
597 | #undef TRACEPOINT_EVENT_INSTANCE | |
598 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
599 | static const int * \ |
600 | __ref_loglevel___##_provider##___##_name \ | |
601 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
602 | static const char * \ |
603 | __ref_model_emf_uri___##_provider##___##_name \ | |
604 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
df854e41 MD |
605 | const struct lttng_event_desc __event_desc___##_provider##_##_name = { \ |
606 | .fields = __event_fields___##_provider##___##_template, \ | |
607 | .name = #_provider ":" #_name, \ | |
fbdeb5ec | 608 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template,\ |
df854e41 | 609 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template), \ |
882a56d7 | 610 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 611 | .signature = __tp_event_signature___##_provider##___##_template, \ |
6ddc916d | 612 | .u.ext.model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \ |
df854e41 MD |
613 | }; |
614 | ||
615 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 616 | |
df854e41 | 617 | /* |
882a56d7 | 618 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
619 | * |
620 | * Create array of events. | |
621 | */ | |
622 | ||
623 | /* Reset all macros within TRACEPOINT_EVENT */ | |
624 | #include <lttng/ust-tracepoint-event-reset.h> | |
625 | ||
626 | #undef TRACEPOINT_EVENT_INSTANCE | |
627 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
628 | &__event_desc___##_provider##_##_name, | |
629 | ||
630 | static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { | |
05ceaafd MD |
631 | #include TRACEPOINT_INCLUDE |
632 | }; | |
633 | ||
df854e41 | 634 | |
05ceaafd | 635 | /* |
882a56d7 | 636 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
637 | * |
638 | * Create a toplevel descriptor for the whole probe. | |
639 | */ | |
640 | ||
641 | /* non-const because list head will be modified when registered. */ | |
642 | static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { | |
df854e41 | 643 | .provider = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd MD |
644 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
645 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)), | |
05ceaafd MD |
646 | }; |
647 | ||
648 | /* | |
882a56d7 | 649 | * Stage 9 of tracepoint event generation. |
05ceaafd | 650 | * |
1c324e59 | 651 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
652 | * |
653 | * Generate the constructor as an externally visible symbol for use when | |
654 | * linking the probe statically. | |
1c324e59 MD |
655 | */ |
656 | ||
657 | /* Reset all macros within TRACEPOINT_EVENT */ | |
658 | #include <lttng/ust-tracepoint-event-reset.h> | |
a8909ba5 PW |
659 | static void lttng_ust_notrace __attribute__((constructor)) |
660 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void); | |
661 | static void | |
1c324e59 MD |
662 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) |
663 | { | |
664 | int ret; | |
665 | ||
e8bd1da7 MD |
666 | /* |
667 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
668 | * static inline function that ensures every probe PROVIDER | |
669 | * argument match the provider within which they appear. It | |
670 | * calls empty static inline functions, and therefore has no | |
671 | * runtime effect. However, if it detects an error, a linker | |
672 | * error will appear. | |
673 | */ | |
674 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
7dd08bec | 675 | ret = lttng_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 MD |
676 | assert(!ret); |
677 | } | |
678 | ||
a8909ba5 PW |
679 | static void lttng_ust_notrace __attribute__((destructor)) |
680 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void); | |
681 | static void | |
1c324e59 MD |
682 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) |
683 | { | |
7dd08bec | 684 | lttng_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 | 685 | } |
628e1d81 MD |
686 | |
687 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER); |