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> | |
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> |
39ad74cf | 31 | #include <byteswap.h> |
44c72f10 | 32 | #include <string.h> |
1c324e59 | 33 | |
24a39530 PP |
34 | #define __LTTNG_UST_NULL_STRING "(null)" |
35 | ||
000b8662 MD |
36 | #undef tp_list_for_each_entry_rcu |
37 | #define tp_list_for_each_entry_rcu(pos, head, member) \ | |
38 | for (pos = cds_list_entry(tp_rcu_dereference_bp((head)->next), __typeof__(*pos), member); \ | |
39 | &pos->member != (head); \ | |
40 | pos = cds_list_entry(tp_rcu_dereference_bp(pos->member.next), __typeof__(*pos), member)) | |
41 | ||
1c324e59 MD |
42 | /* |
43 | * TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the | |
44 | * same arguments and having the same field layout. | |
45 | * | |
46 | * TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with | |
47 | * its own provider and name. It refers to a class (template). | |
48 | * | |
49 | * TRACEPOINT_EVENT declared both a class and an instance and does a | |
50 | * direct mapping from the instance to the class. | |
51 | */ | |
52 | ||
53 | #undef TRACEPOINT_EVENT | |
54 | #define TRACEPOINT_EVENT(_provider, _name, _args, _fields) \ | |
55 | TRACEPOINT_EVENT_CLASS(_provider, _name, \ | |
56 | _TP_PARAMS(_args), \ | |
57 | _TP_PARAMS(_fields)) \ | |
58 | TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \ | |
68755429 | 59 | _TP_PARAMS(_args)) |
1c324e59 MD |
60 | |
61 | /* Helpers */ | |
62 | #define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) | |
63 | ||
64 | #define _tp_max_t(type, x, y) \ | |
65 | ({ \ | |
66 | type __max1 = (x); \ | |
67 | type __max2 = (y); \ | |
68 | __max1 > __max2 ? __max1: __max2; \ | |
69 | }) | |
70 | ||
71 | /* | |
72 | * Stage 0 of tracepoint event generation. | |
73 | * | |
74 | * Check that each TRACEPOINT_EVENT provider argument match the | |
75 | * TRACEPOINT_PROVIDER by creating dummy callbacks. | |
76 | */ | |
77 | ||
78 | /* Reset all macros within TRACEPOINT_EVENT */ | |
79 | #include <lttng/ust-tracepoint-event-reset.h> | |
80 | ||
7ce6b21d PW |
81 | static inline lttng_ust_notrace |
82 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void); | |
1c324e59 MD |
83 | static inline |
84 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void) | |
85 | { | |
86 | } | |
87 | ||
88 | #undef TRACEPOINT_EVENT_CLASS | |
89 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
90 | __tracepoint_provider_mismatch_##_provider(); | |
91 | ||
92 | #undef TRACEPOINT_EVENT_INSTANCE | |
93 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
94 | __tracepoint_provider_mismatch_##_provider(); | |
95 | ||
7ce6b21d PW |
96 | static inline lttng_ust_notrace |
97 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void); | |
e8bd1da7 | 98 | static inline |
1c324e59 MD |
99 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void) |
100 | { | |
101 | #include TRACEPOINT_INCLUDE | |
102 | } | |
103 | ||
f56cd1d5 MD |
104 | /* |
105 | * Stage 0.1 of tracepoint event generation. | |
106 | * | |
107 | * Check that each TRACEPOINT_EVENT provider:name does not exceed the | |
108 | * tracepoint name length limit. | |
109 | */ | |
110 | ||
111 | /* Reset all macros within TRACEPOINT_EVENT */ | |
112 | #include <lttng/ust-tracepoint-event-reset.h> | |
113 | ||
114 | #undef TRACEPOINT_EVENT_INSTANCE | |
115 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
116 | static const char \ | |
117 | __tp_name_len_check##_provider##___##_name[LTTNG_UST_SYM_NAME_LEN] \ | |
118 | __attribute__((unused)) = \ | |
119 | #_provider ":" #_name; | |
120 | ||
121 | #include TRACEPOINT_INCLUDE | |
122 | ||
c785c634 MD |
123 | /* |
124 | * Stage 0.9 of tracepoint event generation | |
125 | * | |
126 | * Unfolding the enums | |
127 | */ | |
128 | #include <lttng/ust-tracepoint-event-reset.h> | |
129 | ||
130 | /* Enumeration entry (single value) */ | |
131 | #undef ctf_enum_value | |
132 | #define ctf_enum_value(_string, _value) \ | |
a6f80644 MD |
133 | { \ |
134 | .start = { \ | |
135 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
136 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
137 | (long long) (_value) : (_value), \ | |
138 | }, \ | |
139 | .end = { \ | |
140 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
141 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
142 | (long long) (_value) : (_value), \ | |
143 | }, \ | |
144 | .string = (_string), \ | |
145 | }, | |
c785c634 MD |
146 | |
147 | /* Enumeration entry (range) */ | |
148 | #undef ctf_enum_range | |
149 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
a6f80644 MD |
150 | { \ |
151 | .start = { \ | |
152 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ | |
153 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ | |
154 | (long long) (_range_start) : (_range_start), \ | |
155 | }, \ | |
156 | .end = { \ | |
157 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ | |
158 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ | |
159 | (long long) (_range_end) : (_range_end), \ | |
160 | }, \ | |
161 | .string = (_string), \ | |
162 | }, | |
c785c634 MD |
163 | |
164 | #undef TP_ENUM_VALUES | |
165 | #define TP_ENUM_VALUES(...) \ | |
166 | __VA_ARGS__ | |
167 | ||
168 | #undef TRACEPOINT_ENUM | |
169 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
170 | const struct lttng_enum_entry __enum_values__##_provider##_##_name[] = { \ | |
171 | _values \ | |
172 | }; | |
173 | ||
174 | #include TRACEPOINT_INCLUDE | |
175 | ||
1c324e59 MD |
176 | /* |
177 | * Stage 1 of tracepoint event generation. | |
178 | * | |
179 | * Create event field type metadata section. | |
180 | * Each event produce an array of fields. | |
181 | */ | |
182 | ||
183 | /* Reset all macros within TRACEPOINT_EVENT */ | |
184 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
185 | #include <lttng/ust-tracepoint-event-write.h> |
186 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 187 | |
4774c8f3 | 188 | #undef _ctf_integer_ext |
180901e6 | 189 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
190 | { \ |
191 | .name = #_item, \ | |
192 | .type = __type_integer(_type, _byte_order, _base, none),\ | |
180901e6 | 193 | .nowrite = _nowrite, \ |
1c324e59 MD |
194 | }, |
195 | ||
4774c8f3 | 196 | #undef _ctf_float |
180901e6 | 197 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
198 | { \ |
199 | .name = #_item, \ | |
200 | .type = __type_float(_type), \ | |
180901e6 | 201 | .nowrite = _nowrite, \ |
1c324e59 MD |
202 | }, |
203 | ||
4774c8f3 | 204 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
205 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ |
206 | _length, _encoding, _nowrite, \ | |
207 | _elem_type_base) \ | |
1c324e59 MD |
208 | { \ |
209 | .name = #_item, \ | |
210 | .type = \ | |
211 | { \ | |
212 | .atype = atype_array, \ | |
46d52200 | 213 | .u = \ |
1c324e59 | 214 | { \ |
46d52200 ZT |
215 | .array = \ |
216 | { \ | |
f3ec4cb5 | 217 | .elem_type = __type_integer(_type, _byte_order, _elem_type_base, _encoding), \ |
46d52200 ZT |
218 | .length = _length, \ |
219 | } \ | |
220 | } \ | |
1c324e59 | 221 | }, \ |
180901e6 | 222 | .nowrite = _nowrite, \ |
1c324e59 MD |
223 | }, |
224 | ||
4774c8f3 | 225 | #undef _ctf_sequence_encoded |
48d660d1 | 226 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ |
f968510a PP |
227 | _length_type, _src_length, _encoding, _nowrite, \ |
228 | _elem_type_base) \ | |
1c324e59 MD |
229 | { \ |
230 | .name = #_item, \ | |
231 | .type = \ | |
232 | { \ | |
233 | .atype = atype_sequence, \ | |
46d52200 | 234 | .u = \ |
1c324e59 | 235 | { \ |
46d52200 ZT |
236 | .sequence = \ |
237 | { \ | |
238 | .length_type = __type_integer(_length_type, BYTE_ORDER, 10, none), \ | |
48d660d1 | 239 | .elem_type = __type_integer(_type, _byte_order, _elem_type_base, _encoding), \ |
46d52200 | 240 | }, \ |
1c324e59 MD |
241 | }, \ |
242 | }, \ | |
180901e6 | 243 | .nowrite = _nowrite, \ |
1c324e59 MD |
244 | }, |
245 | ||
4774c8f3 | 246 | #undef _ctf_string |
180901e6 | 247 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
248 | { \ |
249 | .name = #_item, \ | |
250 | .type = \ | |
251 | { \ | |
252 | .atype = atype_string, \ | |
46d52200 ZT |
253 | .u = \ |
254 | { \ | |
255 | .basic = { .string = { .encoding = lttng_encode_UTF8 } } \ | |
256 | }, \ | |
1c324e59 | 257 | }, \ |
180901e6 | 258 | .nowrite = _nowrite, \ |
1c324e59 MD |
259 | }, |
260 | ||
c785c634 MD |
261 | #undef _ctf_enum |
262 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
263 | { \ | |
264 | .name = #_item, \ | |
265 | .type = { \ | |
266 | .atype = atype_enum, \ | |
267 | .u = { \ | |
268 | .basic = { \ | |
269 | .enumeration = { \ | |
270 | .desc = &__enum_##_provider##_##_name, \ | |
271 | .container_type = { \ | |
272 | .size = sizeof(_type) * CHAR_BIT, \ | |
273 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ | |
274 | .signedness = lttng_is_signed_type(_type), \ | |
275 | .reverse_byte_order = 0, \ | |
276 | .base = 10, \ | |
277 | .encoding = lttng_encode_none, \ | |
278 | }, \ | |
279 | }, \ | |
280 | }, \ | |
281 | }, \ | |
282 | }, \ | |
283 | .nowrite = _nowrite, \ | |
284 | }, | |
285 | ||
1c324e59 | 286 | #undef TP_FIELDS |
2eda209b | 287 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ |
1c324e59 MD |
288 | |
289 | #undef TRACEPOINT_EVENT_CLASS | |
290 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
291 | static const struct lttng_event_field __event_fields___##_provider##___##_name[] = { \ | |
292 | _fields \ | |
293 | }; | |
294 | ||
c785c634 MD |
295 | #undef TRACEPOINT_ENUM |
296 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
297 | static const struct lttng_enum_desc __enum_##_provider##_##_name = { \ | |
298 | .name = #_provider "_" #_name, \ | |
299 | .entries = __enum_values__##_provider##_##_name, \ | |
300 | .nr_entries = _TP_ARRAY_SIZE(__enum_values__##_provider##_##_name), \ | |
301 | }; | |
302 | ||
1c324e59 MD |
303 | #include TRACEPOINT_INCLUDE |
304 | ||
305 | /* | |
306 | * Stage 2 of tracepoint event generation. | |
307 | * | |
308 | * Create probe callback prototypes. | |
309 | */ | |
310 | ||
311 | /* Reset all macros within TRACEPOINT_EVENT */ | |
312 | #include <lttng/ust-tracepoint-event-reset.h> | |
313 | ||
314 | #undef TP_ARGS | |
2eda209b | 315 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
316 | |
317 | #undef TRACEPOINT_EVENT_CLASS | |
318 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
319 | static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); | |
320 | ||
321 | #include TRACEPOINT_INCLUDE | |
322 | ||
323 | /* | |
c785c634 | 324 | * Stage 3.0 of tracepoint event generation. |
1c324e59 | 325 | * |
1c324e59 MD |
326 | * Create static inline function that calculates event size. |
327 | */ | |
328 | ||
329 | /* Reset all macros within TRACEPOINT_EVENT */ | |
330 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 331 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 332 | |
4774c8f3 | 333 | #undef _ctf_integer_ext |
180901e6 | 334 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
335 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
336 | __event_len += sizeof(_type); | |
337 | ||
4774c8f3 | 338 | #undef _ctf_float |
180901e6 | 339 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
340 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
341 | __event_len += sizeof(_type); | |
342 | ||
4774c8f3 | 343 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
344 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, _encoding, \ |
345 | _nowrite, _elem_type_base) \ | |
1c324e59 MD |
346 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
347 | __event_len += sizeof(_type) * (_length); | |
348 | ||
4774c8f3 | 349 | #undef _ctf_sequence_encoded |
48d660d1 | 350 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 351 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 MD |
352 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
353 | __event_len += sizeof(_length_type); \ | |
354 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
355 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ | |
356 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
357 | __dynamic_len_idx++; | |
358 | ||
4774c8f3 | 359 | #undef _ctf_string |
180901e6 | 360 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
361 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
362 | strlen((_src) ? (_src) : __LTTNG_UST_NULL_STRING) + 1; | |
1c324e59 | 363 | |
c785c634 MD |
364 | #undef _ctf_enum |
365 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
366 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
367 | ||
1c324e59 | 368 | #undef TP_ARGS |
2eda209b | 369 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
370 | |
371 | #undef TP_FIELDS | |
2eda209b | 372 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
373 | |
374 | #undef TRACEPOINT_EVENT_CLASS | |
a8909ba5 PW |
375 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ |
376 | static inline lttng_ust_notrace \ | |
377 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)); \ | |
378 | static inline \ | |
379 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
380 | { \ |
381 | size_t __event_len = 0; \ | |
382 | unsigned int __dynamic_len_idx = 0; \ | |
383 | \ | |
384 | if (0) \ | |
385 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
386 | _fields \ | |
387 | return __event_len; \ | |
388 | } | |
389 | ||
390 | #include TRACEPOINT_INCLUDE | |
391 | ||
1ddfd641 MD |
392 | /* |
393 | * Stage 3.1 of tracepoint event generation. | |
394 | * | |
395 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 396 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
397 | */ |
398 | ||
399 | /* Reset all macros within TRACEPOINT_EVENT */ | |
400 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
401 | #include <lttng/ust-tracepoint-event-write.h> |
402 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 403 | |
4774c8f3 | 404 | #undef _ctf_integer_ext |
180901e6 | 405 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
fa099471 | 406 | if (lttng_is_signed_type(_type)) { \ |
3ebeea0d MD |
407 | int64_t __ctf_tmp_int64; \ |
408 | switch (sizeof(_type)) { \ | |
409 | case 1: \ | |
410 | { \ | |
411 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
412 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
413 | break; \ | |
414 | } \ | |
415 | case 2: \ | |
416 | { \ | |
417 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
418 | if (_byte_order != BYTE_ORDER) \ |
419 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
420 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
421 | break; \ | |
422 | } \ | |
423 | case 4: \ | |
424 | { \ | |
425 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
426 | if (_byte_order != BYTE_ORDER) \ |
427 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
428 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
429 | break; \ | |
430 | } \ | |
431 | case 8: \ | |
432 | { \ | |
433 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
434 | if (_byte_order != BYTE_ORDER) \ |
435 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
436 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
437 | break; \ | |
438 | } \ | |
439 | default: \ | |
440 | abort(); \ | |
441 | }; \ | |
fa099471 MD |
442 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ |
443 | } else { \ | |
3ebeea0d MD |
444 | uint64_t __ctf_tmp_uint64; \ |
445 | switch (sizeof(_type)) { \ | |
446 | case 1: \ | |
447 | { \ | |
448 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
449 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
450 | break; \ | |
451 | } \ | |
452 | case 2: \ | |
453 | { \ | |
454 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
455 | if (_byte_order != BYTE_ORDER) \ |
456 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
457 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
458 | break; \ | |
459 | } \ | |
460 | case 4: \ | |
461 | { \ | |
462 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
463 | if (_byte_order != BYTE_ORDER) \ |
464 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
465 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
466 | break; \ | |
467 | } \ | |
468 | case 8: \ | |
469 | { \ | |
470 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
471 | if (_byte_order != BYTE_ORDER) \ |
472 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
473 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
474 | break; \ | |
475 | } \ | |
476 | default: \ | |
477 | abort(); \ | |
478 | }; \ | |
fa099471 MD |
479 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ |
480 | } \ | |
1ddfd641 MD |
481 | __stack_data += sizeof(int64_t); |
482 | ||
4774c8f3 | 483 | #undef _ctf_float |
180901e6 | 484 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
485 | { \ |
486 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
487 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
488 | __stack_data += sizeof(double); \ | |
489 | } | |
1ddfd641 | 490 | |
4774c8f3 | 491 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
492 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
493 | _encoding, _nowrite, _elem_type_base) \ | |
fa099471 MD |
494 | { \ |
495 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 496 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
497 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
498 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
499 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
500 | __stack_data += sizeof(void *); \ | |
fa099471 | 501 | } |
1ddfd641 | 502 | |
4774c8f3 | 503 | #undef _ctf_sequence_encoded |
48d660d1 | 504 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 505 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
fa099471 MD |
506 | { \ |
507 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 508 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
509 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
510 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
511 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
512 | __stack_data += sizeof(void *); \ | |
fa099471 | 513 | } |
1ddfd641 | 514 | |
4774c8f3 | 515 | #undef _ctf_string |
180901e6 | 516 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 517 | { \ |
24a39530 PP |
518 | const void *__ctf_tmp_ptr = \ |
519 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
b1239ad6 MD |
520 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
521 | __stack_data += sizeof(void *); \ | |
fa099471 | 522 | } |
1ddfd641 | 523 | |
c785c634 MD |
524 | #undef _ctf_enum |
525 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
526 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
527 | ||
1ddfd641 MD |
528 | #undef TP_ARGS |
529 | #define TP_ARGS(...) __VA_ARGS__ | |
530 | ||
531 | #undef TP_FIELDS | |
532 | #define TP_FIELDS(...) __VA_ARGS__ | |
533 | ||
534 | #undef TRACEPOINT_EVENT_CLASS | |
535 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
536 | static inline \ | |
537 | void __event_prepare_filter_stack__##_provider##___##_name(char *__stack_data,\ | |
538 | _TP_ARGS_DATA_PROTO(_args)) \ | |
539 | { \ | |
540 | _fields \ | |
541 | } | |
542 | ||
543 | #include TRACEPOINT_INCLUDE | |
544 | ||
1c324e59 | 545 | /* |
df854e41 | 546 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
547 | * |
548 | * Create static inline function that calculates event payload alignment. | |
549 | */ | |
550 | ||
551 | /* Reset all macros within TRACEPOINT_EVENT */ | |
552 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 553 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 554 | |
4774c8f3 | 555 | #undef _ctf_integer_ext |
180901e6 | 556 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
557 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
558 | ||
4774c8f3 | 559 | #undef _ctf_float |
180901e6 | 560 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
561 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
562 | ||
4774c8f3 | 563 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
564 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
565 | _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
566 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
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) \ |
1c324e59 MD |
571 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
572 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); | |
573 | ||
4774c8f3 | 574 | #undef _ctf_string |
180901e6 | 575 | #define _ctf_string(_item, _src, _nowrite) |
1c324e59 | 576 | |
c785c634 MD |
577 | #undef _ctf_enum |
578 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
579 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
580 | ||
1c324e59 | 581 | #undef TP_ARGS |
2eda209b | 582 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
583 | |
584 | #undef TP_FIELDS | |
2eda209b | 585 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
586 | |
587 | #undef TRACEPOINT_EVENT_CLASS | |
588 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
589 | static inline lttng_ust_notrace \ |
590 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)); \ | |
1c324e59 MD |
591 | static inline \ |
592 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
593 | { \ | |
594 | size_t __event_align = 1; \ | |
595 | _fields \ | |
596 | return __event_align; \ | |
597 | } | |
598 | ||
599 | #include TRACEPOINT_INCLUDE | |
600 | ||
601 | ||
602 | /* | |
df854e41 | 603 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
604 | * |
605 | * Create the probe function. This function calls event size calculation | |
606 | * and writes event data into the buffer. | |
607 | */ | |
608 | ||
609 | /* Reset all macros within TRACEPOINT_EVENT */ | |
610 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 611 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 612 | |
4774c8f3 | 613 | #undef _ctf_integer_ext |
180901e6 | 614 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
615 | { \ |
616 | _type __tmp = (_src); \ | |
617 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
618 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
619 | } | |
620 | ||
4774c8f3 | 621 | #undef _ctf_float |
180901e6 | 622 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
623 | { \ |
624 | _type __tmp = (_src); \ | |
625 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
626 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
627 | } | |
628 | ||
4774c8f3 | 629 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
630 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
631 | _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
632 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
633 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); | |
634 | ||
4774c8f3 | 635 | #undef _ctf_sequence_encoded |
48d660d1 | 636 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 637 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 | 638 | { \ |
d71b57b9 | 639 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
1c324e59 MD |
640 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
641 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
642 | } \ | |
643 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
644 | __chan->ops->event_write(&__ctx, _src, \ | |
645 | sizeof(_type) * __get_dynamic_len(dest)); | |
646 | ||
a44c74d9 MD |
647 | /* |
648 | * __chan->ops->u.has_strcpy is a flag letting us know if the LTTng-UST | |
649 | * tracepoint provider ABI implements event_strcpy. This dynamic check | |
650 | * can be removed when the tracepoint provider ABI moves to 2. | |
651 | */ | |
652 | #if (LTTNG_UST_PROVIDER_MAJOR > 1) | |
653 | #error "Tracepoint probe provider major version has changed. Please remove dynamic check for has_strcpy." | |
654 | #endif | |
655 | ||
4774c8f3 | 656 | #undef _ctf_string |
180901e6 | 657 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
658 | { \ |
659 | const char *__ctf_tmp_string = \ | |
660 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
661 | lib_ring_buffer_align_ctx(&__ctx, \ | |
662 | lttng_alignof(*__ctf_tmp_string)); \ | |
663 | if (__chan->ops->u.has_strcpy) \ | |
664 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
665 | __get_dynamic_len(dest)); \ | |
666 | else \ | |
667 | __chan->ops->event_write(&__ctx, __ctf_tmp_string, \ | |
668 | __get_dynamic_len(dest)); \ | |
669 | } | |
670 | ||
1c324e59 | 671 | |
c785c634 MD |
672 | #undef _ctf_enum |
673 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
674 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
675 | ||
1c324e59 MD |
676 | /* Beware: this get len actually consumes the len value */ |
677 | #undef __get_dynamic_len | |
d71b57b9 | 678 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 MD |
679 | |
680 | #undef TP_ARGS | |
2eda209b | 681 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
682 | |
683 | #undef TP_FIELDS | |
2eda209b | 684 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 685 | |
95c25348 PW |
686 | /* |
687 | * For state dump, check that "session" argument (mandatory) matches the | |
688 | * session this event belongs to. Ensures that we write state dump data only | |
689 | * into the started session, not into all sessions. | |
690 | */ | |
691 | #undef _TP_SESSION_CHECK | |
692 | #ifdef TP_SESSION_CHECK | |
693 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
694 | #else /* TP_SESSION_CHECK */ | |
695 | #define _TP_SESSION_CHECK(session, csession) 1 | |
696 | #endif /* TP_SESSION_CHECK */ | |
697 | ||
97904b41 MD |
698 | /* |
699 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
700 | * corruption on 32-bit PowerPC. Disable this feature on that | |
701 | * architecture for now by always using the NULL value for the ip | |
702 | * context. | |
703 | */ | |
5dadb547 MD |
704 | #undef _TP_IP_PARAM |
705 | #ifdef TP_IP_PARAM | |
e1d09f9e | 706 | #define _TP_IP_PARAM(x) (x) |
5dadb547 | 707 | #else /* TP_IP_PARAM */ |
97904b41 MD |
708 | |
709 | #if defined(__PPC__) && !defined(__PPC64__) | |
710 | #define _TP_IP_PARAM(x) NULL | |
711 | #else /* #if defined(__PPC__) && !defined(__PPC64__) */ | |
e1d09f9e | 712 | #define _TP_IP_PARAM(x) __builtin_return_address(0) |
97904b41 MD |
713 | #endif /* #else #if defined(__PPC__) && !defined(__PPC64__) */ |
714 | ||
5dadb547 MD |
715 | #endif /* TP_IP_PARAM */ |
716 | ||
1ddfd641 MD |
717 | /* |
718 | * Using twice size for filter stack data to hold size and pointer for | |
719 | * each field (worse case). For integers, max size required is 64-bit. | |
720 | * Same for double-precision floats. Those fit within | |
721 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 722 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 723 | */ |
1c324e59 MD |
724 | #undef TRACEPOINT_EVENT_CLASS |
725 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
726 | static lttng_ust_notrace \ |
727 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
728 | static \ | |
729 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 730 | { \ |
53569322 | 731 | struct lttng_event *__event = (struct lttng_event *) __tp_data; \ |
7dd08bec | 732 | struct lttng_channel *__chan = __event->chan; \ |
f280cb51 | 733 | struct lttng_ust_lib_ring_buffer_ctx __ctx; \ |
53569322 | 734 | struct lttng_stack_ctx __lttng_ctx; \ |
1c324e59 MD |
735 | size_t __event_len, __event_align; \ |
736 | size_t __dynamic_len_idx = 0; \ | |
d71b57b9 | 737 | union { \ |
1ddfd641 MD |
738 | size_t __dynamic_len[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \ |
739 | char __filter_stack_data[2 * sizeof(unsigned long) * _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name)]; \ | |
d71b57b9 | 740 | } __stackvar; \ |
1c324e59 MD |
741 | int __ret; \ |
742 | \ | |
743 | if (0) \ | |
744 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
95c25348 PW |
745 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
746 | return; \ | |
1c324e59 MD |
747 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->session->active))) \ |
748 | return; \ | |
749 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->enabled))) \ | |
750 | return; \ | |
751 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
752 | return; \ | |
1b436e01 MD |
753 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
754 | return; \ | |
e58095ef | 755 | if (caa_unlikely(!cds_list_empty(&__event->bytecode_runtime_head))) { \ |
f488575f | 756 | struct lttng_bytecode_runtime *bc_runtime; \ |
dcdeaff0 | 757 | int __filter_record = __event->has_enablers_without_bytecode; \ |
f488575f | 758 | \ |
1ddfd641 | 759 | __event_prepare_filter_stack__##_provider##___##_name(__stackvar.__filter_stack_data, \ |
f488575f | 760 | _TP_ARGS_DATA_VAR(_args)); \ |
000b8662 | 761 | tp_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
61ce3223 | 762 | if (caa_unlikely(bc_runtime->filter(bc_runtime, \ |
8a92ed2a MD |
763 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
764 | __filter_record = 1; \ | |
f488575f | 765 | } \ |
8a92ed2a | 766 | if (caa_likely(!__filter_record)) \ |
61ce3223 | 767 | return; \ |
1ddfd641 MD |
768 | } \ |
769 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
1c324e59 MD |
770 | _TP_ARGS_DATA_VAR(_args)); \ |
771 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
53569322 MD |
772 | memset(&__lttng_ctx, 0, sizeof(__lttng_ctx)); \ |
773 | __lttng_ctx.event = __event; \ | |
774 | __lttng_ctx.chan_ctx = tp_rcu_dereference_bp(__chan->ctx); \ | |
775 | __lttng_ctx.event_ctx = tp_rcu_dereference_bp(__event->ctx); \ | |
1c324e59 | 776 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
53569322 | 777 | __event_align, -1, __chan->handle, &__lttng_ctx); \ |
e1d09f9e | 778 | __ctx.ip = _TP_IP_PARAM(TP_IP_PARAM); \ |
1c324e59 MD |
779 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
780 | if (__ret < 0) \ | |
781 | return; \ | |
782 | _fields \ | |
783 | __chan->ops->event_commit(&__ctx); \ | |
784 | } | |
785 | ||
786 | #include TRACEPOINT_INCLUDE | |
787 | ||
788 | #undef __get_dynamic_len | |
789 | ||
68755429 MD |
790 | /* |
791 | * Stage 5.1 of tracepoint event generation. | |
792 | * | |
793 | * Create probe signature | |
794 | */ | |
795 | ||
796 | /* Reset all macros within TRACEPOINT_EVENT */ | |
797 | #include <lttng/ust-tracepoint-event-reset.h> | |
798 | ||
799 | #undef TP_ARGS | |
2eda209b | 800 | #define TP_ARGS(...) __VA_ARGS__ |
9eb06182 MD |
801 | |
802 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 MD |
803 | |
804 | #undef TRACEPOINT_EVENT_CLASS | |
805 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
ff82b7c1 | 806 | static const char __tp_event_signature___##_provider##___##_name[] = \ |
9eb06182 | 807 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
808 | |
809 | #include TRACEPOINT_INCLUDE | |
810 | ||
9eb06182 MD |
811 | #undef _TP_EXTRACT_STRING2 |
812 | ||
05ceaafd | 813 | /* |
882a56d7 | 814 | * Stage 6 of tracepoint event generation. |
1c324e59 | 815 | * |
df854e41 MD |
816 | * Tracepoint loglevel mapping definition generation. We generate a |
817 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
818 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
819 | * the compiler will complain. | |
05ceaafd MD |
820 | */ |
821 | ||
822 | /* Reset all macros within TRACEPOINT_EVENT */ | |
823 | #include <lttng/ust-tracepoint-event-reset.h> | |
824 | ||
825 | #undef TRACEPOINT_LOGLEVEL | |
457a6b58 MD |
826 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
827 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
828 | static const int *_loglevel___##__provider##___##__name = \ | |
829 | &_loglevel_value___##__provider##___##__name; | |
df854e41 MD |
830 | |
831 | #include TRACEPOINT_INCLUDE | |
832 | ||
6ddc916d MD |
833 | /* |
834 | * Stage 6.1 of tracepoint event generation. | |
835 | * | |
836 | * Tracepoint UML URI info. | |
837 | */ | |
838 | ||
839 | /* Reset all macros within TRACEPOINT_EVENT */ | |
840 | #include <lttng/ust-tracepoint-event-reset.h> | |
841 | ||
842 | #undef TRACEPOINT_MODEL_EMF_URI | |
843 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
844 | static const char *_model_emf_uri___##__provider##___##__name = __uri; | |
845 | ||
846 | #include TRACEPOINT_INCLUDE | |
847 | ||
df854e41 | 848 | /* |
882a56d7 | 849 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
850 | * |
851 | * Create events description structures. We use a weakref because | |
852 | * loglevels are optional. If not declared, the event will point to the | |
853 | * a loglevel that contains NULL. | |
854 | */ | |
855 | ||
856 | /* Reset all macros within TRACEPOINT_EVENT */ | |
857 | #include <lttng/ust-tracepoint-event-reset.h> | |
858 | ||
859 | #undef TRACEPOINT_EVENT_INSTANCE | |
860 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
861 | static const int * \ |
862 | __ref_loglevel___##_provider##___##_name \ | |
863 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
864 | static const char * \ |
865 | __ref_model_emf_uri___##_provider##___##_name \ | |
866 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
ff82b7c1 | 867 | static const struct lttng_event_desc __event_desc___##_provider##_##_name = { \ |
df854e41 | 868 | .name = #_provider ":" #_name, \ |
fbdeb5ec | 869 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template,\ |
46d52200 ZT |
870 | .ctx = NULL, \ |
871 | .fields = __event_fields___##_provider##___##_template, \ | |
df854e41 | 872 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template), \ |
882a56d7 | 873 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 874 | .signature = __tp_event_signature___##_provider##___##_template, \ |
c785c634 MD |
875 | .u = { \ |
876 | .ext = { \ | |
877 | .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \ | |
878 | }, \ | |
879 | }, \ | |
df854e41 MD |
880 | }; |
881 | ||
882 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 883 | |
df854e41 | 884 | /* |
882a56d7 | 885 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
886 | * |
887 | * Create array of events. | |
888 | */ | |
889 | ||
890 | /* Reset all macros within TRACEPOINT_EVENT */ | |
891 | #include <lttng/ust-tracepoint-event-reset.h> | |
892 | ||
893 | #undef TRACEPOINT_EVENT_INSTANCE | |
894 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
895 | &__event_desc___##_provider##_##_name, | |
896 | ||
897 | static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { | |
05ceaafd MD |
898 | #include TRACEPOINT_INCLUDE |
899 | }; | |
900 | ||
df854e41 | 901 | |
05ceaafd | 902 | /* |
882a56d7 | 903 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
904 | * |
905 | * Create a toplevel descriptor for the whole probe. | |
906 | */ | |
907 | ||
908 | /* non-const because list head will be modified when registered. */ | |
909 | static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { | |
df854e41 | 910 | .provider = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd MD |
911 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
912 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)), | |
46d52200 ZT |
913 | .head = { NULL, NULL }, |
914 | .lazy_init_head = { NULL, NULL }, | |
915 | .lazy = 0, | |
71d31690 MD |
916 | .major = LTTNG_UST_PROVIDER_MAJOR, |
917 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
918 | }; |
919 | ||
f0cc794d MD |
920 | static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER); |
921 | ||
05ceaafd | 922 | /* |
882a56d7 | 923 | * Stage 9 of tracepoint event generation. |
05ceaafd | 924 | * |
1c324e59 | 925 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
926 | * |
927 | * Generate the constructor as an externally visible symbol for use when | |
928 | * linking the probe statically. | |
f0cc794d MD |
929 | * |
930 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
931 | */ |
932 | ||
933 | /* Reset all macros within TRACEPOINT_EVENT */ | |
934 | #include <lttng/ust-tracepoint-event-reset.h> | |
a8909ba5 PW |
935 | static void lttng_ust_notrace __attribute__((constructor)) |
936 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void); | |
937 | static void | |
1c324e59 MD |
938 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) |
939 | { | |
940 | int ret; | |
941 | ||
f0cc794d MD |
942 | if (_TP_COMBINE_TOKENS(__probe_register_refcount___, |
943 | TRACEPOINT_PROVIDER)++) { | |
944 | return; | |
945 | } | |
e8bd1da7 MD |
946 | /* |
947 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
948 | * static inline function that ensures every probe PROVIDER | |
949 | * argument match the provider within which they appear. It | |
950 | * calls empty static inline functions, and therefore has no | |
951 | * runtime effect. However, if it detects an error, a linker | |
952 | * error will appear. | |
953 | */ | |
954 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
7dd08bec | 955 | ret = lttng_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
7d381d6e MD |
956 | if (ret) { |
957 | fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe. Duplicate registration of tracepoint probes having the same name is not allowed.\n", ret); | |
958 | abort(); | |
959 | } | |
1c324e59 MD |
960 | } |
961 | ||
a8909ba5 PW |
962 | static void lttng_ust_notrace __attribute__((destructor)) |
963 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void); | |
964 | static void | |
1c324e59 MD |
965 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) |
966 | { | |
f0cc794d MD |
967 | if (--_TP_COMBINE_TOKENS(__probe_register_refcount___, |
968 | TRACEPOINT_PROVIDER)) { | |
969 | return; | |
970 | } | |
7dd08bec | 971 | lttng_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 | 972 | } |
628e1d81 MD |
973 | |
974 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER); |