Commit | Line | Data |
---|---|---|
1c324e59 | 1 | /* |
c0c0989a | 2 | * SPDX-License-Identifier: MIT |
1c324e59 | 3 | * |
c0c0989a | 4 | * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
1c324e59 MD |
5 | */ |
6 | ||
fb31eb73 | 7 | #include <stdint.h> |
1c324e59 | 8 | #include <stdio.h> |
7d381d6e | 9 | #include <stdlib.h> |
1c324e59 | 10 | #include <urcu/compiler.h> |
f488575f | 11 | #include <urcu/rculist.h> |
1c324e59 | 12 | #include <lttng/ust-events.h> |
1c324e59 | 13 | #include <lttng/ringbuffer-config.h> |
a8909ba5 | 14 | #include <lttng/ust-compiler.h> |
000b8662 | 15 | #include <lttng/tracepoint.h> |
3208818b | 16 | #include <lttng/ust-endian.h> |
44c72f10 | 17 | #include <string.h> |
1c324e59 | 18 | |
24a39530 PP |
19 | #define __LTTNG_UST_NULL_STRING "(null)" |
20 | ||
000b8662 MD |
21 | #undef tp_list_for_each_entry_rcu |
22 | #define tp_list_for_each_entry_rcu(pos, head, member) \ | |
10544ee8 | 23 | for (pos = cds_list_entry(tp_rcu_dereference((head)->next), __typeof__(*pos), member); \ |
000b8662 | 24 | &pos->member != (head); \ |
10544ee8 | 25 | pos = cds_list_entry(tp_rcu_dereference(pos->member.next), __typeof__(*pos), member)) |
000b8662 | 26 | |
1c324e59 MD |
27 | /* |
28 | * TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the | |
29 | * same arguments and having the same field layout. | |
30 | * | |
31 | * TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with | |
32 | * its own provider and name. It refers to a class (template). | |
33 | * | |
34 | * TRACEPOINT_EVENT declared both a class and an instance and does a | |
35 | * direct mapping from the instance to the class. | |
36 | */ | |
37 | ||
38 | #undef TRACEPOINT_EVENT | |
39 | #define TRACEPOINT_EVENT(_provider, _name, _args, _fields) \ | |
f8021d08 | 40 | _TRACEPOINT_EVENT_CLASS(_provider, _name, \ |
1c324e59 MD |
41 | _TP_PARAMS(_args), \ |
42 | _TP_PARAMS(_fields)) \ | |
f8021d08 | 43 | _TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \ |
68755429 | 44 | _TP_PARAMS(_args)) |
1c324e59 | 45 | |
f8021d08 CB |
46 | #undef TRACEPOINT_EVENT_CLASS |
47 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
48 | _TRACEPOINT_EVENT_CLASS(_provider, _name, _TP_PARAMS(_args), _TP_PARAMS(_fields)) | |
49 | ||
50 | #undef TRACEPOINT_EVENT_INSTANCE | |
51 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
52 | _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _TP_PARAMS(_args)) | |
53 | ||
1c324e59 MD |
54 | /* Helpers */ |
55 | #define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) | |
56 | ||
57 | #define _tp_max_t(type, x, y) \ | |
58 | ({ \ | |
59 | type __max1 = (x); \ | |
60 | type __max2 = (y); \ | |
61 | __max1 > __max2 ? __max1: __max2; \ | |
62 | }) | |
63 | ||
64 | /* | |
65 | * Stage 0 of tracepoint event generation. | |
66 | * | |
67 | * Check that each TRACEPOINT_EVENT provider argument match the | |
68 | * TRACEPOINT_PROVIDER by creating dummy callbacks. | |
69 | */ | |
70 | ||
71 | /* Reset all macros within TRACEPOINT_EVENT */ | |
72 | #include <lttng/ust-tracepoint-event-reset.h> | |
73 | ||
7ce6b21d PW |
74 | static inline lttng_ust_notrace |
75 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void); | |
1c324e59 MD |
76 | static inline |
77 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void) | |
78 | { | |
79 | } | |
80 | ||
f8021d08 CB |
81 | #undef _TRACEPOINT_EVENT_CLASS |
82 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
1c324e59 MD |
83 | __tracepoint_provider_mismatch_##_provider(); |
84 | ||
f8021d08 CB |
85 | #undef _TRACEPOINT_EVENT_INSTANCE |
86 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
1c324e59 MD |
87 | __tracepoint_provider_mismatch_##_provider(); |
88 | ||
7ce6b21d PW |
89 | static inline lttng_ust_notrace |
90 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void); | |
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 | ||
f8021d08 CB |
107 | #undef _TRACEPOINT_EVENT_INSTANCE |
108 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
f56cd1d5 | 109 | static const char \ |
fd17d7ce | 110 | __tp_name_len_check##_provider##___##_name[LTTNG_UST_ABI_SYM_NAME_LEN] \ |
f56cd1d5 MD |
111 | __attribute__((unused)) = \ |
112 | #_provider ":" #_name; | |
113 | ||
114 | #include TRACEPOINT_INCLUDE | |
115 | ||
c75c0422 MD |
116 | /* |
117 | * Stage 0.2 of tracepoint event generation. | |
118 | * | |
119 | * Create dummy trace prototypes for each event class, and for each used | |
120 | * template. This will allow checking whether the prototypes from the | |
121 | * class and the instance using the class actually match. | |
122 | */ | |
123 | ||
124 | /* Reset all macros within TRACEPOINT_EVENT */ | |
125 | #include <lttng/ust-tracepoint-event-reset.h> | |
126 | ||
127 | #undef TP_ARGS | |
128 | #define TP_ARGS(...) __VA_ARGS__ | |
129 | ||
f8021d08 CB |
130 | #undef _TRACEPOINT_EVENT_INSTANCE |
131 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
c75c0422 MD |
132 | void __event_template_proto___##_provider##___##_template(_TP_ARGS_DATA_PROTO(_args)); |
133 | ||
f8021d08 CB |
134 | #undef _TRACEPOINT_EVENT_CLASS |
135 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
c75c0422 MD |
136 | void __event_template_proto___##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); |
137 | ||
138 | #include TRACEPOINT_INCLUDE | |
139 | ||
c785c634 MD |
140 | /* |
141 | * Stage 0.9 of tracepoint event generation | |
142 | * | |
143 | * Unfolding the enums | |
144 | */ | |
145 | #include <lttng/ust-tracepoint-event-reset.h> | |
146 | ||
147 | /* Enumeration entry (single value) */ | |
148 | #undef ctf_enum_value | |
149 | #define ctf_enum_value(_string, _value) \ | |
891d6b55 MD |
150 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, { \ |
151 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ | |
a6f80644 | 152 | .start = { \ |
a6f80644 MD |
153 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ |
154 | (long long) (_value) : (_value), \ | |
2c3f4c28 | 155 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
156 | }, \ |
157 | .end = { \ | |
a6f80644 MD |
158 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ |
159 | (long long) (_value) : (_value), \ | |
2c3f4c28 | 160 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
161 | }, \ |
162 | .string = (_string), \ | |
891d6b55 | 163 | }), |
c785c634 MD |
164 | |
165 | /* Enumeration entry (range) */ | |
166 | #undef ctf_enum_range | |
167 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
891d6b55 MD |
168 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, { \ |
169 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ | |
a6f80644 | 170 | .start = { \ |
a6f80644 MD |
171 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ |
172 | (long long) (_range_start) : (_range_start), \ | |
2c3f4c28 | 173 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ |
a6f80644 MD |
174 | }, \ |
175 | .end = { \ | |
a6f80644 MD |
176 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ |
177 | (long long) (_range_end) : (_range_end), \ | |
2c3f4c28 | 178 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ |
a6f80644 MD |
179 | }, \ |
180 | .string = (_string), \ | |
891d6b55 | 181 | }), |
c785c634 | 182 | |
3e762260 PP |
183 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
184 | #undef ctf_enum_auto | |
891d6b55 MD |
185 | #define ctf_enum_auto(_string) \ |
186 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, { \ | |
187 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ | |
3e762260 PP |
188 | .start = { \ |
189 | .value = -1ULL, \ | |
190 | .signedness = 0, \ | |
191 | }, \ | |
192 | .end = { \ | |
193 | .value = -1ULL, \ | |
194 | .signedness = 0, \ | |
195 | }, \ | |
196 | .string = (_string), \ | |
891d6b55 MD |
197 | .options = LTTNG_ENUM_ENTRY_OPTION_IS_AUTO, \ |
198 | }), | |
3e762260 | 199 | |
c785c634 MD |
200 | #undef TP_ENUM_VALUES |
201 | #define TP_ENUM_VALUES(...) \ | |
202 | __VA_ARGS__ | |
203 | ||
204 | #undef TRACEPOINT_ENUM | |
205 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
891d6b55 | 206 | const struct lttng_ust_enum_entry *__enum_values__##_provider##_##_name[] = { \ |
c785c634 | 207 | _values \ |
1c80c909 | 208 | ctf_enum_value("", 0) /* Dummy, 0-len array forbidden by C99. */ \ |
c785c634 | 209 | }; |
2df82195 FD |
210 | #include TRACEPOINT_INCLUDE |
211 | ||
212 | /* | |
213 | * Stage 0.9.1 | |
214 | * Verifying array and sequence elements are of an integer type. | |
215 | */ | |
216 | ||
217 | /* Reset all macros within TRACEPOINT_EVENT */ | |
218 | #include <lttng/ust-tracepoint-event-reset.h> | |
219 | #include <lttng/ust-tracepoint-event-write.h> | |
220 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
221 | ||
222 | #undef _ctf_array_encoded | |
223 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ | |
224 | _length, _encoding, _nowrite, \ | |
225 | _elem_type_base) \ | |
226 | _lttng_array_element_type_is_supported(_type, _item) | |
227 | ||
228 | #undef _ctf_sequence_encoded | |
229 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ | |
230 | _length_type, _src_length, _encoding, _nowrite, \ | |
231 | _elem_type_base) \ | |
232 | _lttng_array_element_type_is_supported(_type, _item) | |
233 | ||
234 | #undef TP_FIELDS | |
235 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
236 | ||
f8021d08 CB |
237 | #undef _TRACEPOINT_EVENT_CLASS |
238 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
2df82195 | 239 | _fields |
c785c634 MD |
240 | |
241 | #include TRACEPOINT_INCLUDE | |
242 | ||
1c324e59 MD |
243 | /* |
244 | * Stage 1 of tracepoint event generation. | |
245 | * | |
246 | * Create event field type metadata section. | |
247 | * Each event produce an array of fields. | |
248 | */ | |
249 | ||
250 | /* Reset all macros within TRACEPOINT_EVENT */ | |
251 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
252 | #include <lttng/ust-tracepoint-event-write.h> |
253 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 254 | |
4774c8f3 | 255 | #undef _ctf_integer_ext |
25cff019 MD |
256 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
257 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ | |
258 | .struct_size = sizeof(struct lttng_ust_event_field), \ | |
259 | .name = #_item, \ | |
260 | .type = __type_integer(_type, _byte_order, _base, none), \ | |
261 | .nowrite = _nowrite, \ | |
262 | .nofilter = 0, \ | |
263 | }), | |
1c324e59 | 264 | |
4774c8f3 | 265 | #undef _ctf_float |
180901e6 | 266 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
25cff019 MD |
267 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
268 | .struct_size = sizeof(struct lttng_ust_event_field), \ | |
269 | .name = #_item, \ | |
270 | .type = __type_float(_type), \ | |
271 | .nowrite = _nowrite, \ | |
272 | .nofilter = 0, \ | |
273 | }), | |
1c324e59 | 274 | |
4774c8f3 | 275 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
276 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ |
277 | _length, _encoding, _nowrite, \ | |
278 | _elem_type_base) \ | |
25cff019 MD |
279 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
280 | .struct_size = sizeof(struct lttng_ust_event_field), \ | |
281 | .name = #_item, \ | |
282 | .type = { \ | |
283 | .atype = atype_array_nestable, \ | |
284 | .u = { \ | |
285 | .array_nestable = { \ | |
286 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
218deb69 | 287 | __type_integer(_type, _byte_order, _elem_type_base, _encoding)), \ |
25cff019 MD |
288 | .length = _length, \ |
289 | .alignment = 0, \ | |
46d52200 ZT |
290 | } \ |
291 | } \ | |
1c324e59 | 292 | }, \ |
25cff019 MD |
293 | .nowrite = _nowrite, \ |
294 | .nofilter = 0, \ | |
295 | }), | |
1c324e59 | 296 | |
4774c8f3 | 297 | #undef _ctf_sequence_encoded |
48d660d1 | 298 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ |
f968510a PP |
299 | _length_type, _src_length, _encoding, _nowrite, \ |
300 | _elem_type_base) \ | |
25cff019 MD |
301 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
302 | .struct_size = sizeof(struct lttng_ust_event_field), \ | |
303 | .name = "_" #_item "_length", \ | |
304 | .type = __type_integer(_length_type, BYTE_ORDER, 10, none), \ | |
305 | .nowrite = _nowrite, \ | |
306 | .nofilter = 1, \ | |
307 | }), \ | |
308 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ | |
309 | .struct_size = sizeof(struct lttng_ust_event_field), \ | |
310 | .name = #_item, \ | |
311 | .type = { \ | |
312 | .atype = atype_sequence_nestable, \ | |
313 | .u = { \ | |
314 | .sequence_nestable = { \ | |
315 | .length_name = "_" #_item "_length", \ | |
316 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
317 | __type_integer(_type, _byte_order, _elem_type_base, _encoding)), \ | |
318 | .alignment = 0, \ | |
46d52200 | 319 | }, \ |
1c324e59 MD |
320 | }, \ |
321 | }, \ | |
25cff019 MD |
322 | .nowrite = _nowrite, \ |
323 | .nofilter = 0, \ | |
324 | }), | |
1c324e59 | 325 | |
4774c8f3 | 326 | #undef _ctf_string |
180901e6 | 327 | #define _ctf_string(_item, _src, _nowrite) \ |
25cff019 MD |
328 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
329 | .struct_size = sizeof(struct lttng_ust_event_field), \ | |
330 | .name = #_item, \ | |
331 | .type = { \ | |
332 | .atype = atype_string, \ | |
333 | .u = { \ | |
334 | .string = { .encoding = lttng_encode_UTF8 } \ | |
46d52200 | 335 | }, \ |
1c324e59 | 336 | }, \ |
25cff019 MD |
337 | .nowrite = _nowrite, \ |
338 | .nofilter = 0, \ | |
339 | }), | |
1c324e59 | 340 | |
c785c634 MD |
341 | #undef _ctf_enum |
342 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
25cff019 MD |
343 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
344 | .struct_size = sizeof(struct lttng_ust_event_field), \ | |
c785c634 MD |
345 | .name = #_item, \ |
346 | .type = { \ | |
218deb69 | 347 | .atype = atype_enum_nestable, \ |
c785c634 | 348 | .u = { \ |
218deb69 MD |
349 | .enum_nestable = { \ |
350 | .desc = &__enum_##_provider##_##_name, \ | |
351 | .container_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
352 | __type_integer(_type, BYTE_ORDER, 10, none)), \ | |
353 | }, \ | |
c785c634 MD |
354 | }, \ |
355 | }, \ | |
356 | .nowrite = _nowrite, \ | |
25cff019 MD |
357 | .nofilter = 0, \ |
358 | }), | |
c785c634 | 359 | |
1c324e59 | 360 | #undef TP_FIELDS |
2eda209b | 361 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ |
1c324e59 | 362 | |
f8021d08 CB |
363 | #undef _TRACEPOINT_EVENT_CLASS |
364 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
25cff019 | 365 | static const struct lttng_ust_event_field *__event_fields___##_provider##___##_name[] = { \ |
1c324e59 | 366 | _fields \ |
1c80c909 | 367 | ctf_integer(int, dummy, 0) /* Dummy, C99 forbids 0-len array. */ \ |
1c324e59 MD |
368 | }; |
369 | ||
c785c634 MD |
370 | #undef TRACEPOINT_ENUM |
371 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
891d6b55 MD |
372 | static const struct lttng_ust_enum_desc __enum_##_provider##_##_name = { \ |
373 | .struct_size = sizeof(struct lttng_ust_enum_desc), \ | |
c785c634 MD |
374 | .name = #_provider "_" #_name, \ |
375 | .entries = __enum_values__##_provider##_##_name, \ | |
1c80c909 | 376 | .nr_entries = _TP_ARRAY_SIZE(__enum_values__##_provider##_##_name) - 1, \ |
c785c634 MD |
377 | }; |
378 | ||
1c324e59 MD |
379 | #include TRACEPOINT_INCLUDE |
380 | ||
381 | /* | |
382 | * Stage 2 of tracepoint event generation. | |
383 | * | |
384 | * Create probe callback prototypes. | |
385 | */ | |
386 | ||
387 | /* Reset all macros within TRACEPOINT_EVENT */ | |
388 | #include <lttng/ust-tracepoint-event-reset.h> | |
389 | ||
390 | #undef TP_ARGS | |
2eda209b | 391 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 | 392 | |
f8021d08 CB |
393 | #undef _TRACEPOINT_EVENT_CLASS |
394 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
1c324e59 MD |
395 | static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); |
396 | ||
397 | #include TRACEPOINT_INCLUDE | |
398 | ||
399 | /* | |
c785c634 | 400 | * Stage 3.0 of tracepoint event generation. |
1c324e59 | 401 | * |
1c324e59 MD |
402 | * Create static inline function that calculates event size. |
403 | */ | |
404 | ||
405 | /* Reset all macros within TRACEPOINT_EVENT */ | |
406 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 407 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 408 | |
4774c8f3 | 409 | #undef _ctf_integer_ext |
180901e6 | 410 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
411 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
412 | __event_len += sizeof(_type); | |
413 | ||
4774c8f3 | 414 | #undef _ctf_float |
180901e6 | 415 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
416 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
417 | __event_len += sizeof(_type); | |
418 | ||
4774c8f3 | 419 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
420 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, _encoding, \ |
421 | _nowrite, _elem_type_base) \ | |
1c324e59 MD |
422 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
423 | __event_len += sizeof(_type) * (_length); | |
424 | ||
4774c8f3 | 425 | #undef _ctf_sequence_encoded |
48d660d1 | 426 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 427 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 MD |
428 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
429 | __event_len += sizeof(_length_type); \ | |
430 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
431 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ | |
432 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
433 | __dynamic_len_idx++; | |
434 | ||
4774c8f3 | 435 | #undef _ctf_string |
180901e6 | 436 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
437 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
438 | strlen((_src) ? (_src) : __LTTNG_UST_NULL_STRING) + 1; | |
1c324e59 | 439 | |
c785c634 MD |
440 | #undef _ctf_enum |
441 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
442 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
443 | ||
1c324e59 | 444 | #undef TP_ARGS |
2eda209b | 445 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
446 | |
447 | #undef TP_FIELDS | |
2eda209b | 448 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 449 | |
f8021d08 CB |
450 | #undef _TRACEPOINT_EVENT_CLASS |
451 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
452 | static inline lttng_ust_notrace \ |
453 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)); \ | |
454 | static inline \ | |
455 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
456 | { \ |
457 | size_t __event_len = 0; \ | |
458 | unsigned int __dynamic_len_idx = 0; \ | |
459 | \ | |
460 | if (0) \ | |
461 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
462 | _fields \ | |
463 | return __event_len; \ | |
464 | } | |
465 | ||
466 | #include TRACEPOINT_INCLUDE | |
467 | ||
1ddfd641 MD |
468 | /* |
469 | * Stage 3.1 of tracepoint event generation. | |
470 | * | |
471 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 472 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
473 | */ |
474 | ||
475 | /* Reset all macros within TRACEPOINT_EVENT */ | |
476 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
477 | #include <lttng/ust-tracepoint-event-write.h> |
478 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 479 | |
4774c8f3 | 480 | #undef _ctf_integer_ext |
180901e6 | 481 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
fa099471 | 482 | if (lttng_is_signed_type(_type)) { \ |
3ebeea0d MD |
483 | int64_t __ctf_tmp_int64; \ |
484 | switch (sizeof(_type)) { \ | |
485 | case 1: \ | |
486 | { \ | |
487 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
488 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
489 | break; \ | |
490 | } \ | |
491 | case 2: \ | |
492 | { \ | |
493 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
494 | if (_byte_order != BYTE_ORDER) \ |
495 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
496 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
497 | break; \ | |
498 | } \ | |
499 | case 4: \ | |
500 | { \ | |
501 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
502 | if (_byte_order != BYTE_ORDER) \ |
503 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
504 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
505 | break; \ | |
506 | } \ | |
507 | case 8: \ | |
508 | { \ | |
509 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
510 | if (_byte_order != BYTE_ORDER) \ |
511 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
512 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
513 | break; \ | |
514 | } \ | |
515 | default: \ | |
516 | abort(); \ | |
517 | }; \ | |
fa099471 MD |
518 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ |
519 | } else { \ | |
3ebeea0d MD |
520 | uint64_t __ctf_tmp_uint64; \ |
521 | switch (sizeof(_type)) { \ | |
522 | case 1: \ | |
523 | { \ | |
524 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
525 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
526 | break; \ | |
527 | } \ | |
528 | case 2: \ | |
529 | { \ | |
530 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
531 | if (_byte_order != BYTE_ORDER) \ |
532 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
533 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
534 | break; \ | |
535 | } \ | |
536 | case 4: \ | |
537 | { \ | |
538 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
539 | if (_byte_order != BYTE_ORDER) \ |
540 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
541 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
542 | break; \ | |
543 | } \ | |
544 | case 8: \ | |
545 | { \ | |
546 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
547 | if (_byte_order != BYTE_ORDER) \ |
548 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
549 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
550 | break; \ | |
551 | } \ | |
552 | default: \ | |
553 | abort(); \ | |
554 | }; \ | |
fa099471 MD |
555 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ |
556 | } \ | |
1ddfd641 MD |
557 | __stack_data += sizeof(int64_t); |
558 | ||
4774c8f3 | 559 | #undef _ctf_float |
180901e6 | 560 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
561 | { \ |
562 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
563 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
564 | __stack_data += sizeof(double); \ | |
565 | } | |
1ddfd641 | 566 | |
4774c8f3 | 567 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
568 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
569 | _encoding, _nowrite, _elem_type_base) \ | |
fa099471 MD |
570 | { \ |
571 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 572 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
573 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
574 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
575 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
576 | __stack_data += sizeof(void *); \ | |
fa099471 | 577 | } |
1ddfd641 | 578 | |
4774c8f3 | 579 | #undef _ctf_sequence_encoded |
48d660d1 | 580 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 581 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
fa099471 MD |
582 | { \ |
583 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 584 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
585 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
586 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
587 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
588 | __stack_data += sizeof(void *); \ | |
fa099471 | 589 | } |
1ddfd641 | 590 | |
4774c8f3 | 591 | #undef _ctf_string |
180901e6 | 592 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 593 | { \ |
24a39530 PP |
594 | const void *__ctf_tmp_ptr = \ |
595 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
b1239ad6 MD |
596 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
597 | __stack_data += sizeof(void *); \ | |
fa099471 | 598 | } |
1ddfd641 | 599 | |
c785c634 MD |
600 | #undef _ctf_enum |
601 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
602 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
603 | ||
1ddfd641 MD |
604 | #undef TP_ARGS |
605 | #define TP_ARGS(...) __VA_ARGS__ | |
606 | ||
607 | #undef TP_FIELDS | |
608 | #define TP_FIELDS(...) __VA_ARGS__ | |
609 | ||
f8021d08 CB |
610 | #undef _TRACEPOINT_EVENT_CLASS |
611 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
1ddfd641 | 612 | static inline \ |
d37ecb3f | 613 | void __event_prepare_interpreter_stack__##_provider##___##_name(char *__stack_data,\ |
1ddfd641 MD |
614 | _TP_ARGS_DATA_PROTO(_args)) \ |
615 | { \ | |
616 | _fields \ | |
617 | } | |
618 | ||
619 | #include TRACEPOINT_INCLUDE | |
620 | ||
1c324e59 | 621 | /* |
df854e41 | 622 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
623 | * |
624 | * Create static inline function that calculates event payload alignment. | |
625 | */ | |
626 | ||
627 | /* Reset all macros within TRACEPOINT_EVENT */ | |
628 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 629 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 630 | |
4774c8f3 | 631 | #undef _ctf_integer_ext |
180901e6 | 632 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
633 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
634 | ||
4774c8f3 | 635 | #undef _ctf_float |
180901e6 | 636 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
637 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
638 | ||
4774c8f3 | 639 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
640 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
641 | _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
642 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
643 | ||
4774c8f3 | 644 | #undef _ctf_sequence_encoded |
48d660d1 | 645 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 646 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 MD |
647 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
648 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); | |
649 | ||
4774c8f3 | 650 | #undef _ctf_string |
180901e6 | 651 | #define _ctf_string(_item, _src, _nowrite) |
1c324e59 | 652 | |
c785c634 MD |
653 | #undef _ctf_enum |
654 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
655 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
656 | ||
1c324e59 | 657 | #undef TP_ARGS |
2eda209b | 658 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
659 | |
660 | #undef TP_FIELDS | |
2eda209b | 661 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 662 | |
f8021d08 CB |
663 | #undef _TRACEPOINT_EVENT_CLASS |
664 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
665 | static inline lttng_ust_notrace \ |
666 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)); \ | |
1c324e59 MD |
667 | static inline \ |
668 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
669 | { \ | |
670 | size_t __event_align = 1; \ | |
671 | _fields \ | |
672 | return __event_align; \ | |
673 | } | |
674 | ||
675 | #include TRACEPOINT_INCLUDE | |
676 | ||
677 | ||
678 | /* | |
df854e41 | 679 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
680 | * |
681 | * Create the probe function. This function calls event size calculation | |
682 | * and writes event data into the buffer. | |
683 | */ | |
684 | ||
685 | /* Reset all macros within TRACEPOINT_EVENT */ | |
686 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 687 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 688 | |
4774c8f3 | 689 | #undef _ctf_integer_ext |
180901e6 | 690 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
691 | { \ |
692 | _type __tmp = (_src); \ | |
693 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
694 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
695 | } | |
696 | ||
4774c8f3 | 697 | #undef _ctf_float |
180901e6 | 698 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
699 | { \ |
700 | _type __tmp = (_src); \ | |
701 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
702 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
703 | } | |
704 | ||
4774c8f3 | 705 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
706 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
707 | _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
708 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
709 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); | |
710 | ||
4774c8f3 | 711 | #undef _ctf_sequence_encoded |
48d660d1 | 712 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 713 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 | 714 | { \ |
d71b57b9 | 715 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
1c324e59 MD |
716 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
717 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
718 | } \ | |
719 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
720 | __chan->ops->event_write(&__ctx, _src, \ | |
721 | sizeof(_type) * __get_dynamic_len(dest)); | |
722 | ||
4774c8f3 | 723 | #undef _ctf_string |
180901e6 | 724 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
725 | { \ |
726 | const char *__ctf_tmp_string = \ | |
727 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
728 | lib_ring_buffer_align_ctx(&__ctx, \ | |
729 | lttng_alignof(*__ctf_tmp_string)); \ | |
f9ec4a97 MD |
730 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ |
731 | __get_dynamic_len(dest)); \ | |
24a39530 PP |
732 | } |
733 | ||
1c324e59 | 734 | |
c785c634 MD |
735 | #undef _ctf_enum |
736 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
737 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
738 | ||
1c324e59 MD |
739 | /* Beware: this get len actually consumes the len value */ |
740 | #undef __get_dynamic_len | |
d71b57b9 | 741 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 MD |
742 | |
743 | #undef TP_ARGS | |
2eda209b | 744 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
745 | |
746 | #undef TP_FIELDS | |
2eda209b | 747 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 748 | |
95c25348 PW |
749 | /* |
750 | * For state dump, check that "session" argument (mandatory) matches the | |
751 | * session this event belongs to. Ensures that we write state dump data only | |
752 | * into the started session, not into all sessions. | |
753 | */ | |
754 | #undef _TP_SESSION_CHECK | |
755 | #ifdef TP_SESSION_CHECK | |
756 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
757 | #else /* TP_SESSION_CHECK */ | |
758 | #define _TP_SESSION_CHECK(session, csession) 1 | |
759 | #endif /* TP_SESSION_CHECK */ | |
760 | ||
97904b41 MD |
761 | /* |
762 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
763 | * corruption on 32-bit PowerPC. Disable this feature on that | |
764 | * architecture for now by always using the NULL value for the ip | |
765 | * context. | |
766 | */ | |
5dadb547 MD |
767 | #undef _TP_IP_PARAM |
768 | #ifdef TP_IP_PARAM | |
e1d09f9e | 769 | #define _TP_IP_PARAM(x) (x) |
5dadb547 | 770 | #else /* TP_IP_PARAM */ |
97904b41 MD |
771 | |
772 | #if defined(__PPC__) && !defined(__PPC64__) | |
773 | #define _TP_IP_PARAM(x) NULL | |
774 | #else /* #if defined(__PPC__) && !defined(__PPC64__) */ | |
e1d09f9e | 775 | #define _TP_IP_PARAM(x) __builtin_return_address(0) |
97904b41 MD |
776 | #endif /* #else #if defined(__PPC__) && !defined(__PPC64__) */ |
777 | ||
5dadb547 MD |
778 | #endif /* TP_IP_PARAM */ |
779 | ||
1ddfd641 MD |
780 | /* |
781 | * Using twice size for filter stack data to hold size and pointer for | |
782 | * each field (worse case). For integers, max size required is 64-bit. | |
783 | * Same for double-precision floats. Those fit within | |
784 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 785 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 786 | */ |
f8021d08 CB |
787 | #undef _TRACEPOINT_EVENT_CLASS |
788 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
789 | static lttng_ust_notrace \ |
790 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
791 | static \ | |
792 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 793 | { \ |
ba99fbe2 | 794 | struct lttng_ust_event_common *__event = (struct lttng_ust_event_common *) __tp_data; \ |
1c324e59 | 795 | size_t __dynamic_len_idx = 0; \ |
75026e9f | 796 | const size_t __num_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1; \ |
d71b57b9 | 797 | union { \ |
75026e9f | 798 | size_t __dynamic_len[__num_fields]; \ |
ba99fbe2 | 799 | char __interpreter_stack_data[2 * sizeof(unsigned long) * __num_fields]; \ |
d71b57b9 | 800 | } __stackvar; \ |
1c324e59 MD |
801 | int __ret; \ |
802 | \ | |
803 | if (0) \ | |
804 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
ba99fbe2 MD |
805 | switch (__event->type) { \ |
806 | case LTTNG_UST_EVENT_TYPE_RECORDER: \ | |
807 | { \ | |
808 | struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \ | |
809 | struct lttng_channel *__chan = __event_recorder->chan; \ | |
810 | \ | |
811 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ | |
812 | return; \ | |
813 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->session->active))) \ | |
814 | return; \ | |
815 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->enabled))) \ | |
816 | return; \ | |
817 | break; \ | |
818 | } \ | |
819 | case LTTNG_UST_EVENT_TYPE_NOTIFIER: \ | |
820 | break; \ | |
821 | } \ | |
822 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
1c324e59 | 823 | return; \ |
1b436e01 MD |
824 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
825 | return; \ | |
ba99fbe2 | 826 | if (caa_unlikely(!cds_list_empty(&__event->filter_bytecode_runtime_head))) { \ |
5469a374 | 827 | struct lttng_ust_bytecode_runtime *__filter_bc_runtime; \ |
ba99fbe2 | 828 | int __filter_record = __event->has_enablers_without_bytecode; \ |
f488575f | 829 | \ |
ba99fbe2 | 830 | __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ |
f488575f | 831 | _TP_ARGS_DATA_VAR(_args)); \ |
ba99fbe2 | 832 | tp_list_for_each_entry_rcu(__filter_bc_runtime, &__event->filter_bytecode_runtime_head, node) { \ |
c42416df | 833 | if (caa_unlikely(__filter_bc_runtime->interpreter_funcs.filter(__filter_bc_runtime, \ |
ba99fbe2 | 834 | __stackvar.__interpreter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) { \ |
8a92ed2a | 835 | __filter_record = 1; \ |
5ffb7c14 FD |
836 | break; \ |
837 | } \ | |
f488575f | 838 | } \ |
8a92ed2a | 839 | if (caa_likely(!__filter_record)) \ |
61ce3223 | 840 | return; \ |
1ddfd641 | 841 | } \ |
ba99fbe2 MD |
842 | switch (__event->type) { \ |
843 | case LTTNG_UST_EVENT_TYPE_RECORDER: \ | |
844 | { \ | |
845 | size_t __event_len, __event_align; \ | |
846 | struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \ | |
847 | struct lttng_channel *__chan = __event_recorder->chan; \ | |
848 | struct lttng_ust_lib_ring_buffer_ctx __ctx; \ | |
2a9d9339 | 849 | struct lttng_ust_stack_ctx __lttng_ctx; \ |
ba99fbe2 MD |
850 | \ |
851 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
852 | _TP_ARGS_DATA_VAR(_args)); \ | |
853 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
854 | memset(&__lttng_ctx, 0, sizeof(__lttng_ctx)); \ | |
2a9d9339 | 855 | __lttng_ctx.struct_size = sizeof(struct lttng_ust_stack_ctx); \ |
ba99fbe2 MD |
856 | __lttng_ctx.event_recorder = __event_recorder; \ |
857 | __lttng_ctx.chan_ctx = tp_rcu_dereference(__chan->ctx); \ | |
858 | __lttng_ctx.event_ctx = tp_rcu_dereference(__event_recorder->ctx); \ | |
859 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_ctx, __event_len, \ | |
860 | __event_align, -1, __chan->handle); \ | |
861 | __ctx.ip = _TP_IP_PARAM(TP_IP_PARAM); \ | |
862 | __ret = __chan->ops->event_reserve(&__ctx, __event_recorder->id); \ | |
863 | if (__ret < 0) \ | |
864 | return; \ | |
865 | _fields \ | |
866 | __chan->ops->event_commit(&__ctx); \ | |
867 | break; \ | |
868 | } \ | |
869 | case LTTNG_UST_EVENT_TYPE_NOTIFIER: \ | |
870 | { \ | |
871 | struct lttng_ust_event_notifier *__event_notifier = (struct lttng_ust_event_notifier *) __event->child; \ | |
872 | \ | |
873 | if (caa_unlikely(!cds_list_empty(&__event_notifier->capture_bytecode_runtime_head))) \ | |
874 | __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ | |
875 | _TP_ARGS_DATA_VAR(_args)); \ | |
876 | \ | |
877 | __event_notifier->notification_send(__event_notifier, \ | |
878 | __stackvar.__interpreter_stack_data); \ | |
879 | break; \ | |
880 | } \ | |
881 | } \ | |
1c324e59 MD |
882 | } |
883 | ||
884 | #include TRACEPOINT_INCLUDE | |
885 | ||
886 | #undef __get_dynamic_len | |
887 | ||
68755429 MD |
888 | /* |
889 | * Stage 5.1 of tracepoint event generation. | |
890 | * | |
891 | * Create probe signature | |
892 | */ | |
893 | ||
894 | /* Reset all macros within TRACEPOINT_EVENT */ | |
895 | #include <lttng/ust-tracepoint-event-reset.h> | |
896 | ||
897 | #undef TP_ARGS | |
2eda209b | 898 | #define TP_ARGS(...) __VA_ARGS__ |
9eb06182 MD |
899 | |
900 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 | 901 | |
f8021d08 CB |
902 | #undef _TRACEPOINT_EVENT_CLASS |
903 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
ff82b7c1 | 904 | static const char __tp_event_signature___##_provider##___##_name[] = \ |
9eb06182 | 905 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
906 | |
907 | #include TRACEPOINT_INCLUDE | |
908 | ||
9eb06182 MD |
909 | #undef _TP_EXTRACT_STRING2 |
910 | ||
05ceaafd | 911 | /* |
882a56d7 | 912 | * Stage 6 of tracepoint event generation. |
1c324e59 | 913 | * |
df854e41 MD |
914 | * Tracepoint loglevel mapping definition generation. We generate a |
915 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
916 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
917 | * the compiler will complain. | |
05ceaafd MD |
918 | */ |
919 | ||
920 | /* Reset all macros within TRACEPOINT_EVENT */ | |
921 | #include <lttng/ust-tracepoint-event-reset.h> | |
922 | ||
4ea4f80e MD |
923 | /* |
924 | * Declare _loglevel___##__provider##___##__name as non-static, with | |
925 | * hidden visibility for c++ handling of weakref. We do a weakref to the | |
926 | * symbol in a later stage, which requires that the symbol is not | |
927 | * mangled. | |
928 | */ | |
929 | #ifdef __cplusplus | |
930 | #define LTTNG_TP_EXTERN_C extern "C" | |
931 | #else | |
932 | #define LTTNG_TP_EXTERN_C | |
933 | #endif | |
934 | ||
05ceaafd | 935 | #undef TRACEPOINT_LOGLEVEL |
457a6b58 MD |
936 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
937 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
4ea4f80e MD |
938 | LTTNG_TP_EXTERN_C const int *_loglevel___##__provider##___##__name \ |
939 | __attribute__((visibility("hidden"))) = \ | |
457a6b58 | 940 | &_loglevel_value___##__provider##___##__name; |
df854e41 MD |
941 | |
942 | #include TRACEPOINT_INCLUDE | |
943 | ||
4ea4f80e | 944 | #undef LTTNG_TP_EXTERN_C |
4ea4f80e | 945 | |
6ddc916d MD |
946 | /* |
947 | * Stage 6.1 of tracepoint event generation. | |
948 | * | |
949 | * Tracepoint UML URI info. | |
950 | */ | |
951 | ||
952 | /* Reset all macros within TRACEPOINT_EVENT */ | |
953 | #include <lttng/ust-tracepoint-event-reset.h> | |
954 | ||
4ea4f80e MD |
955 | /* |
956 | * Declare _model_emf_uri___##__provider##___##__name as non-static, | |
957 | * with hidden visibility for c++ handling of weakref. We do a weakref | |
958 | * to the symbol in a later stage, which requires that the symbol is not | |
959 | * mangled. | |
960 | */ | |
961 | #ifdef __cplusplus | |
962 | #define LTTNG_TP_EXTERN_C extern "C" | |
963 | #else | |
964 | #define LTTNG_TP_EXTERN_C | |
965 | #endif | |
966 | ||
6ddc916d MD |
967 | #undef TRACEPOINT_MODEL_EMF_URI |
968 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
4ea4f80e | 969 | LTTNG_TP_EXTERN_C const char *_model_emf_uri___##__provider##___##__name \ |
082802f9 | 970 | __attribute__((visibility("hidden"))) = __uri; \ |
6ddc916d MD |
971 | |
972 | #include TRACEPOINT_INCLUDE | |
973 | ||
4ea4f80e | 974 | #undef LTTNG_TP_EXTERN_C |
4ea4f80e | 975 | |
df854e41 | 976 | /* |
882a56d7 | 977 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
978 | * |
979 | * Create events description structures. We use a weakref because | |
980 | * loglevels are optional. If not declared, the event will point to the | |
981 | * a loglevel that contains NULL. | |
982 | */ | |
983 | ||
984 | /* Reset all macros within TRACEPOINT_EVENT */ | |
985 | #include <lttng/ust-tracepoint-event-reset.h> | |
986 | ||
f8021d08 CB |
987 | #undef _TRACEPOINT_EVENT_INSTANCE |
988 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
989 | static const int * \ |
990 | __ref_loglevel___##_provider##___##_name \ | |
991 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
992 | static const char * \ |
993 | __ref_model_emf_uri___##_provider##___##_name \ | |
994 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
dc11f93f MD |
995 | static const struct lttng_ust_event_desc __event_desc___##_provider##_##_name = { \ |
996 | .struct_size = sizeof(struct lttng_ust_event_desc), \ | |
df854e41 | 997 | .name = #_provider ":" #_name, \ |
dc11f93f | 998 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template, \ |
46d52200 ZT |
999 | .ctx = NULL, \ |
1000 | .fields = __event_fields___##_provider##___##_template, \ | |
1c80c909 | 1001 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template) - 1, \ |
882a56d7 | 1002 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 1003 | .signature = __tp_event_signature___##_provider##___##_template, \ |
dc11f93f | 1004 | .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \ |
df854e41 MD |
1005 | }; |
1006 | ||
1007 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 1008 | |
df854e41 | 1009 | /* |
882a56d7 | 1010 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
1011 | * |
1012 | * Create array of events. | |
1013 | */ | |
1014 | ||
1015 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1016 | #include <lttng/ust-tracepoint-event-reset.h> | |
1017 | ||
f8021d08 CB |
1018 | #undef _TRACEPOINT_EVENT_INSTANCE |
1019 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
df854e41 MD |
1020 | &__event_desc___##_provider##_##_name, |
1021 | ||
dc11f93f | 1022 | static const struct lttng_ust_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { |
05ceaafd | 1023 | #include TRACEPOINT_INCLUDE |
1c80c909 | 1024 | NULL, /* Dummy, C99 forbids 0-len array. */ |
05ceaafd MD |
1025 | }; |
1026 | ||
df854e41 | 1027 | |
05ceaafd | 1028 | /* |
882a56d7 | 1029 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
1030 | * |
1031 | * Create a toplevel descriptor for the whole probe. | |
1032 | */ | |
1033 | ||
1034 | /* non-const because list head will be modified when registered. */ | |
dc11f93f MD |
1035 | static struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { |
1036 | .struct_size = sizeof(struct lttng_ust_probe_desc), | |
df854e41 | 1037 | .provider = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd | 1038 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
1c80c909 | 1039 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)) - 1, |
46d52200 ZT |
1040 | .head = { NULL, NULL }, |
1041 | .lazy_init_head = { NULL, NULL }, | |
1042 | .lazy = 0, | |
71d31690 MD |
1043 | .major = LTTNG_UST_PROVIDER_MAJOR, |
1044 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
1045 | }; |
1046 | ||
f0cc794d MD |
1047 | static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER); |
1048 | ||
05ceaafd | 1049 | /* |
882a56d7 | 1050 | * Stage 9 of tracepoint event generation. |
05ceaafd | 1051 | * |
1c324e59 | 1052 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
1053 | * |
1054 | * Generate the constructor as an externally visible symbol for use when | |
1055 | * linking the probe statically. | |
f0cc794d MD |
1056 | * |
1057 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
1058 | */ |
1059 | ||
1060 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1061 | #include <lttng/ust-tracepoint-event-reset.h> | |
a8909ba5 PW |
1062 | static void lttng_ust_notrace __attribute__((constructor)) |
1063 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void); | |
1064 | static void | |
1c324e59 MD |
1065 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) |
1066 | { | |
1067 | int ret; | |
1068 | ||
f0cc794d MD |
1069 | if (_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1070 | TRACEPOINT_PROVIDER)++) { | |
1071 | return; | |
1072 | } | |
e8bd1da7 MD |
1073 | /* |
1074 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
1075 | * static inline function that ensures every probe PROVIDER | |
1076 | * argument match the provider within which they appear. It | |
1077 | * calls empty static inline functions, and therefore has no | |
1078 | * runtime effect. However, if it detects an error, a linker | |
1079 | * error will appear. | |
1080 | */ | |
1081 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
dc11f93f | 1082 | ret = lttng_ust_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
7d381d6e | 1083 | if (ret) { |
0fdd0b89 | 1084 | fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe.\n", ret); |
7d381d6e MD |
1085 | abort(); |
1086 | } | |
1c324e59 MD |
1087 | } |
1088 | ||
a8909ba5 PW |
1089 | static void lttng_ust_notrace __attribute__((destructor)) |
1090 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void); | |
1091 | static void | |
1c324e59 MD |
1092 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) |
1093 | { | |
f0cc794d MD |
1094 | if (--_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1095 | TRACEPOINT_PROVIDER)) { | |
1096 | return; | |
1097 | } | |
dc11f93f | 1098 | lttng_ust_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 | 1099 | } |
628e1d81 | 1100 | |
6c8cfec7 MD |
1101 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER) |
1102 | __attribute__((visibility("default"))); |