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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> |
0466ac28 | 13 | #include <lttng/ringbuffer-context.h> |
2eba8e39 | 14 | #include <lttng/ust-arch.h> |
a8909ba5 | 15 | #include <lttng/ust-compiler.h> |
000b8662 | 16 | #include <lttng/tracepoint.h> |
3208818b | 17 | #include <lttng/ust-endian.h> |
44c72f10 | 18 | #include <string.h> |
1c324e59 | 19 | |
24a39530 PP |
20 | #define __LTTNG_UST_NULL_STRING "(null)" |
21 | ||
000b8662 MD |
22 | #undef tp_list_for_each_entry_rcu |
23 | #define tp_list_for_each_entry_rcu(pos, head, member) \ | |
10544ee8 | 24 | for (pos = cds_list_entry(tp_rcu_dereference((head)->next), __typeof__(*pos), member); \ |
000b8662 | 25 | &pos->member != (head); \ |
10544ee8 | 26 | pos = cds_list_entry(tp_rcu_dereference(pos->member.next), __typeof__(*pos), member)) |
000b8662 | 27 | |
1c324e59 MD |
28 | /* |
29 | * TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the | |
30 | * same arguments and having the same field layout. | |
31 | * | |
32 | * TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with | |
33 | * its own provider and name. It refers to a class (template). | |
34 | * | |
35 | * TRACEPOINT_EVENT declared both a class and an instance and does a | |
36 | * direct mapping from the instance to the class. | |
37 | */ | |
38 | ||
39 | #undef TRACEPOINT_EVENT | |
40 | #define TRACEPOINT_EVENT(_provider, _name, _args, _fields) \ | |
f8021d08 | 41 | _TRACEPOINT_EVENT_CLASS(_provider, _name, \ |
1c324e59 MD |
42 | _TP_PARAMS(_args), \ |
43 | _TP_PARAMS(_fields)) \ | |
f8021d08 | 44 | _TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \ |
68755429 | 45 | _TP_PARAMS(_args)) |
1c324e59 | 46 | |
f8021d08 CB |
47 | #undef TRACEPOINT_EVENT_CLASS |
48 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
49 | _TRACEPOINT_EVENT_CLASS(_provider, _name, _TP_PARAMS(_args), _TP_PARAMS(_fields)) | |
50 | ||
51 | #undef TRACEPOINT_EVENT_INSTANCE | |
52 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
53 | _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _TP_PARAMS(_args)) | |
54 | ||
1c324e59 MD |
55 | /* Helpers */ |
56 | #define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) | |
57 | ||
58 | #define _tp_max_t(type, x, y) \ | |
59 | ({ \ | |
60 | type __max1 = (x); \ | |
61 | type __max2 = (y); \ | |
62 | __max1 > __max2 ? __max1: __max2; \ | |
63 | }) | |
64 | ||
65 | /* | |
66 | * Stage 0 of tracepoint event generation. | |
67 | * | |
68 | * Check that each TRACEPOINT_EVENT provider argument match the | |
69 | * TRACEPOINT_PROVIDER by creating dummy callbacks. | |
70 | */ | |
71 | ||
72 | /* Reset all macros within TRACEPOINT_EVENT */ | |
73 | #include <lttng/ust-tracepoint-event-reset.h> | |
74 | ||
7ce6b21d PW |
75 | static inline lttng_ust_notrace |
76 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void); | |
1c324e59 MD |
77 | static inline |
78 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void) | |
79 | { | |
80 | } | |
81 | ||
f8021d08 CB |
82 | #undef _TRACEPOINT_EVENT_CLASS |
83 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
1c324e59 MD |
84 | __tracepoint_provider_mismatch_##_provider(); |
85 | ||
f8021d08 CB |
86 | #undef _TRACEPOINT_EVENT_INSTANCE |
87 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
1c324e59 MD |
88 | __tracepoint_provider_mismatch_##_provider(); |
89 | ||
7ce6b21d PW |
90 | static inline lttng_ust_notrace |
91 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void); | |
e8bd1da7 | 92 | static inline |
1c324e59 MD |
93 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void) |
94 | { | |
95 | #include TRACEPOINT_INCLUDE | |
96 | } | |
97 | ||
f56cd1d5 MD |
98 | /* |
99 | * Stage 0.1 of tracepoint event generation. | |
100 | * | |
101 | * Check that each TRACEPOINT_EVENT provider:name does not exceed the | |
102 | * tracepoint name length limit. | |
103 | */ | |
104 | ||
105 | /* Reset all macros within TRACEPOINT_EVENT */ | |
106 | #include <lttng/ust-tracepoint-event-reset.h> | |
107 | ||
f8021d08 CB |
108 | #undef _TRACEPOINT_EVENT_INSTANCE |
109 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
f56cd1d5 | 110 | static const char \ |
fd17d7ce | 111 | __tp_name_len_check##_provider##___##_name[LTTNG_UST_ABI_SYM_NAME_LEN] \ |
f56cd1d5 MD |
112 | __attribute__((unused)) = \ |
113 | #_provider ":" #_name; | |
114 | ||
115 | #include TRACEPOINT_INCLUDE | |
116 | ||
c75c0422 MD |
117 | /* |
118 | * Stage 0.2 of tracepoint event generation. | |
119 | * | |
120 | * Create dummy trace prototypes for each event class, and for each used | |
121 | * template. This will allow checking whether the prototypes from the | |
122 | * class and the instance using the class actually match. | |
123 | */ | |
124 | ||
125 | /* Reset all macros within TRACEPOINT_EVENT */ | |
126 | #include <lttng/ust-tracepoint-event-reset.h> | |
127 | ||
128 | #undef TP_ARGS | |
129 | #define TP_ARGS(...) __VA_ARGS__ | |
130 | ||
f8021d08 CB |
131 | #undef _TRACEPOINT_EVENT_INSTANCE |
132 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
c75c0422 MD |
133 | void __event_template_proto___##_provider##___##_template(_TP_ARGS_DATA_PROTO(_args)); |
134 | ||
f8021d08 CB |
135 | #undef _TRACEPOINT_EVENT_CLASS |
136 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
c75c0422 MD |
137 | void __event_template_proto___##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); |
138 | ||
139 | #include TRACEPOINT_INCLUDE | |
140 | ||
c785c634 MD |
141 | /* |
142 | * Stage 0.9 of tracepoint event generation | |
143 | * | |
144 | * Unfolding the enums | |
145 | */ | |
146 | #include <lttng/ust-tracepoint-event-reset.h> | |
147 | ||
148 | /* Enumeration entry (single value) */ | |
149 | #undef ctf_enum_value | |
150 | #define ctf_enum_value(_string, _value) \ | |
891d6b55 MD |
151 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, { \ |
152 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ | |
a6f80644 | 153 | .start = { \ |
a6f80644 MD |
154 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ |
155 | (long long) (_value) : (_value), \ | |
2c3f4c28 | 156 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
157 | }, \ |
158 | .end = { \ | |
a6f80644 MD |
159 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ |
160 | (long long) (_value) : (_value), \ | |
2c3f4c28 | 161 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
162 | }, \ |
163 | .string = (_string), \ | |
891d6b55 | 164 | }), |
c785c634 MD |
165 | |
166 | /* Enumeration entry (range) */ | |
167 | #undef ctf_enum_range | |
168 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
891d6b55 MD |
169 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, { \ |
170 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ | |
a6f80644 | 171 | .start = { \ |
a6f80644 MD |
172 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ |
173 | (long long) (_range_start) : (_range_start), \ | |
2c3f4c28 | 174 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ |
a6f80644 MD |
175 | }, \ |
176 | .end = { \ | |
a6f80644 MD |
177 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ |
178 | (long long) (_range_end) : (_range_end), \ | |
2c3f4c28 | 179 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ |
a6f80644 MD |
180 | }, \ |
181 | .string = (_string), \ | |
891d6b55 | 182 | }), |
c785c634 | 183 | |
3e762260 PP |
184 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
185 | #undef ctf_enum_auto | |
891d6b55 MD |
186 | #define ctf_enum_auto(_string) \ |
187 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, { \ | |
188 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ | |
3e762260 PP |
189 | .start = { \ |
190 | .value = -1ULL, \ | |
191 | .signedness = 0, \ | |
192 | }, \ | |
193 | .end = { \ | |
194 | .value = -1ULL, \ | |
195 | .signedness = 0, \ | |
196 | }, \ | |
197 | .string = (_string), \ | |
1a37a873 | 198 | .options = LTTNG_UST_ENUM_ENTRY_OPTION_IS_AUTO, \ |
891d6b55 | 199 | }), |
3e762260 | 200 | |
c785c634 MD |
201 | #undef TP_ENUM_VALUES |
202 | #define TP_ENUM_VALUES(...) \ | |
203 | __VA_ARGS__ | |
204 | ||
205 | #undef TRACEPOINT_ENUM | |
206 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
a084756d | 207 | struct lttng_ust_enum_entry *__enum_values__##_provider##_##_name[] = { \ |
c785c634 | 208 | _values \ |
1c80c909 | 209 | ctf_enum_value("", 0) /* Dummy, 0-len array forbidden by C99. */ \ |
c785c634 | 210 | }; |
2df82195 FD |
211 | #include TRACEPOINT_INCLUDE |
212 | ||
213 | /* | |
214 | * Stage 0.9.1 | |
215 | * Verifying array and sequence elements are of an integer type. | |
216 | */ | |
217 | ||
218 | /* Reset all macros within TRACEPOINT_EVENT */ | |
219 | #include <lttng/ust-tracepoint-event-reset.h> | |
220 | #include <lttng/ust-tracepoint-event-write.h> | |
221 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
222 | ||
223 | #undef _ctf_array_encoded | |
224 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ | |
225 | _length, _encoding, _nowrite, \ | |
226 | _elem_type_base) \ | |
227 | _lttng_array_element_type_is_supported(_type, _item) | |
228 | ||
229 | #undef _ctf_sequence_encoded | |
230 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ | |
231 | _length_type, _src_length, _encoding, _nowrite, \ | |
232 | _elem_type_base) \ | |
233 | _lttng_array_element_type_is_supported(_type, _item) | |
234 | ||
235 | #undef TP_FIELDS | |
236 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
237 | ||
f8021d08 CB |
238 | #undef _TRACEPOINT_EVENT_CLASS |
239 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
2df82195 | 240 | _fields |
c785c634 MD |
241 | |
242 | #include TRACEPOINT_INCLUDE | |
243 | ||
1c324e59 MD |
244 | /* |
245 | * Stage 1 of tracepoint event generation. | |
246 | * | |
247 | * Create event field type metadata section. | |
248 | * Each event produce an array of fields. | |
249 | */ | |
250 | ||
251 | /* Reset all macros within TRACEPOINT_EVENT */ | |
252 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
253 | #include <lttng/ust-tracepoint-event-write.h> |
254 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 255 | |
4774c8f3 | 256 | #undef _ctf_integer_ext |
25cff019 | 257 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
a084756d | 258 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
259 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
260 | .name = #_item, \ | |
a084756d | 261 | .type = lttng_ust_type_integer_define(_type, _byte_order, _base), \ |
25cff019 MD |
262 | .nowrite = _nowrite, \ |
263 | .nofilter = 0, \ | |
264 | }), | |
1c324e59 | 265 | |
4774c8f3 | 266 | #undef _ctf_float |
180901e6 | 267 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
a084756d | 268 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
269 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
270 | .name = #_item, \ | |
a084756d | 271 | .type = lttng_ust_type_float_define(_type), \ |
25cff019 MD |
272 | .nowrite = _nowrite, \ |
273 | .nofilter = 0, \ | |
274 | }), | |
1c324e59 | 275 | |
4774c8f3 | 276 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
277 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ |
278 | _length, _encoding, _nowrite, \ | |
279 | _elem_type_base) \ | |
a084756d | 280 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
281 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
282 | .name = #_item, \ | |
a084756d MD |
283 | .type = (struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(struct lttng_ust_type_array, { \ |
284 | .parent = { \ | |
285 | .type = lttng_ust_type_array, \ | |
286 | }, \ | |
287 | .struct_size = sizeof(struct lttng_ust_type_array), \ | |
288 | .elem_type = lttng_ust_type_integer_define(_type, _byte_order, _elem_type_base), \ | |
289 | .length = _length, \ | |
290 | .alignment = 0, \ | |
291 | .encoding = lttng_ust_string_encoding_##_encoding, \ | |
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) \ | |
a084756d | 301 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
302 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
303 | .name = "_" #_item "_length", \ | |
a084756d | 304 | .type = lttng_ust_type_integer_define(_length_type, BYTE_ORDER, 10), \ |
25cff019 MD |
305 | .nowrite = _nowrite, \ |
306 | .nofilter = 1, \ | |
307 | }), \ | |
a084756d | 308 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
309 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
310 | .name = #_item, \ | |
a084756d MD |
311 | .type = (struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(struct lttng_ust_type_sequence, { \ |
312 | .parent = { \ | |
313 | .type = lttng_ust_type_sequence, \ | |
1c324e59 | 314 | }, \ |
a084756d MD |
315 | .struct_size = sizeof(struct lttng_ust_type_sequence), \ |
316 | .length_name = "_" #_item "_length", \ | |
317 | .elem_type = lttng_ust_type_integer_define(_type, _byte_order, _elem_type_base), \ | |
318 | .alignment = 0, \ | |
319 | .encoding = lttng_ust_string_encoding_##_encoding, \ | |
320 | }), \ | |
25cff019 MD |
321 | .nowrite = _nowrite, \ |
322 | .nofilter = 0, \ | |
323 | }), | |
1c324e59 | 324 | |
4774c8f3 | 325 | #undef _ctf_string |
180901e6 | 326 | #define _ctf_string(_item, _src, _nowrite) \ |
a084756d | 327 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
328 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
329 | .name = #_item, \ | |
a084756d MD |
330 | .type = (struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(struct lttng_ust_type_string, { \ |
331 | .parent = { \ | |
332 | .type = lttng_ust_type_string, \ | |
46d52200 | 333 | }, \ |
a084756d MD |
334 | .struct_size = sizeof(struct lttng_ust_type_string), \ |
335 | .encoding = lttng_ust_string_encoding_UTF8, \ | |
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) \ | |
a084756d | 343 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 | 344 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
c785c634 | 345 | .name = #_item, \ |
a084756d MD |
346 | .type = (struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(struct lttng_ust_type_enum, { \ |
347 | .parent = { \ | |
348 | .type = lttng_ust_type_enum, \ | |
c785c634 | 349 | }, \ |
a084756d MD |
350 | .struct_size = sizeof(struct lttng_ust_type_enum), \ |
351 | .desc = &__enum_##_provider##_##_name, \ | |
352 | .container_type = lttng_ust_type_integer_define(_type, BYTE_ORDER, 10), \ | |
353 | }), \ | |
c785c634 | 354 | .nowrite = _nowrite, \ |
25cff019 MD |
355 | .nofilter = 0, \ |
356 | }), | |
c785c634 | 357 | |
1c324e59 | 358 | #undef TP_FIELDS |
2eda209b | 359 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ |
1c324e59 | 360 | |
f8021d08 CB |
361 | #undef _TRACEPOINT_EVENT_CLASS |
362 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a084756d | 363 | static struct lttng_ust_event_field *__event_fields___##_provider##___##_name[] = { \ |
1c324e59 | 364 | _fields \ |
1c80c909 | 365 | ctf_integer(int, dummy, 0) /* Dummy, C99 forbids 0-len array. */ \ |
1c324e59 MD |
366 | }; |
367 | ||
c785c634 MD |
368 | #undef TRACEPOINT_ENUM |
369 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
a084756d MD |
370 | static struct lttng_ust_enum_desc __enum_##_provider##_##_name = { \ |
371 | .struct_size = sizeof(struct lttng_ust_enum_desc), \ | |
c785c634 MD |
372 | .name = #_provider "_" #_name, \ |
373 | .entries = __enum_values__##_provider##_##_name, \ | |
1c80c909 | 374 | .nr_entries = _TP_ARRAY_SIZE(__enum_values__##_provider##_##_name) - 1, \ |
c785c634 MD |
375 | }; |
376 | ||
1c324e59 MD |
377 | #include TRACEPOINT_INCLUDE |
378 | ||
379 | /* | |
380 | * Stage 2 of tracepoint event generation. | |
381 | * | |
382 | * Create probe callback prototypes. | |
383 | */ | |
384 | ||
385 | /* Reset all macros within TRACEPOINT_EVENT */ | |
386 | #include <lttng/ust-tracepoint-event-reset.h> | |
387 | ||
388 | #undef TP_ARGS | |
2eda209b | 389 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 | 390 | |
f8021d08 CB |
391 | #undef _TRACEPOINT_EVENT_CLASS |
392 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
1c324e59 MD |
393 | static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); |
394 | ||
395 | #include TRACEPOINT_INCLUDE | |
396 | ||
397 | /* | |
c785c634 | 398 | * Stage 3.0 of tracepoint event generation. |
1c324e59 | 399 | * |
1c324e59 MD |
400 | * Create static inline function that calculates event size. |
401 | */ | |
402 | ||
403 | /* Reset all macros within TRACEPOINT_EVENT */ | |
404 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 405 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 406 | |
4774c8f3 | 407 | #undef _ctf_integer_ext |
180901e6 | 408 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
409 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
410 | __event_len += sizeof(_type); | |
411 | ||
4774c8f3 | 412 | #undef _ctf_float |
180901e6 | 413 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
414 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
415 | __event_len += sizeof(_type); | |
416 | ||
4774c8f3 | 417 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
418 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, _encoding, \ |
419 | _nowrite, _elem_type_base) \ | |
1c324e59 MD |
420 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
421 | __event_len += sizeof(_type) * (_length); | |
422 | ||
4774c8f3 | 423 | #undef _ctf_sequence_encoded |
48d660d1 | 424 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 425 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 MD |
426 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
427 | __event_len += sizeof(_length_type); \ | |
428 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
429 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ | |
430 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
431 | __dynamic_len_idx++; | |
432 | ||
4774c8f3 | 433 | #undef _ctf_string |
180901e6 | 434 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
435 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
436 | strlen((_src) ? (_src) : __LTTNG_UST_NULL_STRING) + 1; | |
1c324e59 | 437 | |
c785c634 MD |
438 | #undef _ctf_enum |
439 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
440 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
441 | ||
1c324e59 | 442 | #undef TP_ARGS |
2eda209b | 443 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
444 | |
445 | #undef TP_FIELDS | |
2eda209b | 446 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 447 | |
f8021d08 CB |
448 | #undef _TRACEPOINT_EVENT_CLASS |
449 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
450 | static inline lttng_ust_notrace \ |
451 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)); \ | |
452 | static inline \ | |
453 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
454 | { \ |
455 | size_t __event_len = 0; \ | |
456 | unsigned int __dynamic_len_idx = 0; \ | |
457 | \ | |
458 | if (0) \ | |
459 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
460 | _fields \ | |
461 | return __event_len; \ | |
462 | } | |
463 | ||
464 | #include TRACEPOINT_INCLUDE | |
465 | ||
1ddfd641 MD |
466 | /* |
467 | * Stage 3.1 of tracepoint event generation. | |
468 | * | |
469 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 470 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
471 | */ |
472 | ||
473 | /* Reset all macros within TRACEPOINT_EVENT */ | |
474 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
475 | #include <lttng/ust-tracepoint-event-write.h> |
476 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 477 | |
4774c8f3 | 478 | #undef _ctf_integer_ext |
180901e6 | 479 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
fa099471 | 480 | if (lttng_is_signed_type(_type)) { \ |
3ebeea0d MD |
481 | int64_t __ctf_tmp_int64; \ |
482 | switch (sizeof(_type)) { \ | |
483 | case 1: \ | |
484 | { \ | |
485 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
486 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
487 | break; \ | |
488 | } \ | |
489 | case 2: \ | |
490 | { \ | |
491 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
492 | if (_byte_order != BYTE_ORDER) \ |
493 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
494 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
495 | break; \ | |
496 | } \ | |
497 | case 4: \ | |
498 | { \ | |
499 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
500 | if (_byte_order != BYTE_ORDER) \ |
501 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
502 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
503 | break; \ | |
504 | } \ | |
505 | case 8: \ | |
506 | { \ | |
507 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
508 | if (_byte_order != BYTE_ORDER) \ |
509 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
510 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
511 | break; \ | |
512 | } \ | |
513 | default: \ | |
514 | abort(); \ | |
515 | }; \ | |
fa099471 MD |
516 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ |
517 | } else { \ | |
3ebeea0d MD |
518 | uint64_t __ctf_tmp_uint64; \ |
519 | switch (sizeof(_type)) { \ | |
520 | case 1: \ | |
521 | { \ | |
522 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
523 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
524 | break; \ | |
525 | } \ | |
526 | case 2: \ | |
527 | { \ | |
528 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
529 | if (_byte_order != BYTE_ORDER) \ |
530 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
531 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
532 | break; \ | |
533 | } \ | |
534 | case 4: \ | |
535 | { \ | |
536 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
537 | if (_byte_order != BYTE_ORDER) \ |
538 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
539 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
540 | break; \ | |
541 | } \ | |
542 | case 8: \ | |
543 | { \ | |
544 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
545 | if (_byte_order != BYTE_ORDER) \ |
546 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
547 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
548 | break; \ | |
549 | } \ | |
550 | default: \ | |
551 | abort(); \ | |
552 | }; \ | |
fa099471 MD |
553 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ |
554 | } \ | |
1ddfd641 MD |
555 | __stack_data += sizeof(int64_t); |
556 | ||
4774c8f3 | 557 | #undef _ctf_float |
180901e6 | 558 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
559 | { \ |
560 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
561 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
562 | __stack_data += sizeof(double); \ | |
563 | } | |
1ddfd641 | 564 | |
4774c8f3 | 565 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
566 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
567 | _encoding, _nowrite, _elem_type_base) \ | |
fa099471 MD |
568 | { \ |
569 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 570 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
571 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
572 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
573 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
574 | __stack_data += sizeof(void *); \ | |
fa099471 | 575 | } |
1ddfd641 | 576 | |
4774c8f3 | 577 | #undef _ctf_sequence_encoded |
48d660d1 | 578 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 579 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
fa099471 MD |
580 | { \ |
581 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 582 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
583 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
584 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
585 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
586 | __stack_data += sizeof(void *); \ | |
fa099471 | 587 | } |
1ddfd641 | 588 | |
4774c8f3 | 589 | #undef _ctf_string |
180901e6 | 590 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 591 | { \ |
24a39530 PP |
592 | const void *__ctf_tmp_ptr = \ |
593 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
b1239ad6 MD |
594 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
595 | __stack_data += sizeof(void *); \ | |
fa099471 | 596 | } |
1ddfd641 | 597 | |
c785c634 MD |
598 | #undef _ctf_enum |
599 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
600 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
601 | ||
1ddfd641 MD |
602 | #undef TP_ARGS |
603 | #define TP_ARGS(...) __VA_ARGS__ | |
604 | ||
605 | #undef TP_FIELDS | |
606 | #define TP_FIELDS(...) __VA_ARGS__ | |
607 | ||
f8021d08 CB |
608 | #undef _TRACEPOINT_EVENT_CLASS |
609 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
1ddfd641 | 610 | static inline \ |
d37ecb3f | 611 | void __event_prepare_interpreter_stack__##_provider##___##_name(char *__stack_data,\ |
1ddfd641 MD |
612 | _TP_ARGS_DATA_PROTO(_args)) \ |
613 | { \ | |
614 | _fields \ | |
615 | } | |
616 | ||
617 | #include TRACEPOINT_INCLUDE | |
618 | ||
1c324e59 | 619 | /* |
df854e41 | 620 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
621 | * |
622 | * Create static inline function that calculates event payload alignment. | |
623 | */ | |
624 | ||
625 | /* Reset all macros within TRACEPOINT_EVENT */ | |
626 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 627 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 628 | |
4774c8f3 | 629 | #undef _ctf_integer_ext |
180901e6 | 630 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
631 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
632 | ||
4774c8f3 | 633 | #undef _ctf_float |
180901e6 | 634 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
635 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
636 | ||
4774c8f3 | 637 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
638 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
639 | _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
640 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
641 | ||
4774c8f3 | 642 | #undef _ctf_sequence_encoded |
48d660d1 | 643 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 644 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 MD |
645 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
646 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); | |
647 | ||
4774c8f3 | 648 | #undef _ctf_string |
180901e6 | 649 | #define _ctf_string(_item, _src, _nowrite) |
1c324e59 | 650 | |
c785c634 MD |
651 | #undef _ctf_enum |
652 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
653 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
654 | ||
1c324e59 | 655 | #undef TP_ARGS |
2eda209b | 656 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
657 | |
658 | #undef TP_FIELDS | |
2eda209b | 659 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 660 | |
f8021d08 CB |
661 | #undef _TRACEPOINT_EVENT_CLASS |
662 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
663 | static inline lttng_ust_notrace \ |
664 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)); \ | |
1c324e59 MD |
665 | static inline \ |
666 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
667 | { \ | |
668 | size_t __event_align = 1; \ | |
669 | _fields \ | |
670 | return __event_align; \ | |
671 | } | |
672 | ||
673 | #include TRACEPOINT_INCLUDE | |
674 | ||
675 | ||
676 | /* | |
df854e41 | 677 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
678 | * |
679 | * Create the probe function. This function calls event size calculation | |
680 | * and writes event data into the buffer. | |
681 | */ | |
682 | ||
683 | /* Reset all macros within TRACEPOINT_EVENT */ | |
684 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 685 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 686 | |
4774c8f3 | 687 | #undef _ctf_integer_ext |
180901e6 | 688 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
689 | { \ |
690 | _type __tmp = (_src); \ | |
691 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
692 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
693 | } | |
694 | ||
4774c8f3 | 695 | #undef _ctf_float |
180901e6 | 696 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
697 | { \ |
698 | _type __tmp = (_src); \ | |
699 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
700 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
701 | } | |
702 | ||
4774c8f3 | 703 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
704 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
705 | _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 | 706 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
27927814 MD |
707 | if (lttng_ust_string_encoding_##_encoding == lttng_ust_string_encoding_none) \ |
708 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
709 | else \ | |
710 | __chan->ops->event_strcpy_pad(&__ctx, (const char *) (_src), _length); \ | |
1c324e59 | 711 | |
4774c8f3 | 712 | #undef _ctf_sequence_encoded |
48d660d1 | 713 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 714 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 | 715 | { \ |
d71b57b9 | 716 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
1c324e59 MD |
717 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
718 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
719 | } \ | |
720 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
27927814 MD |
721 | if (lttng_ust_string_encoding_##_encoding == lttng_ust_string_encoding_none) \ |
722 | __chan->ops->event_write(&__ctx, _src, \ | |
723 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
724 | else \ | |
725 | __chan->ops->event_strcpy_pad(&__ctx, (const char *) (_src), __get_dynamic_len(dest)); \ | |
1c324e59 | 726 | |
4774c8f3 | 727 | #undef _ctf_string |
180901e6 | 728 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
729 | { \ |
730 | const char *__ctf_tmp_string = \ | |
731 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
732 | lib_ring_buffer_align_ctx(&__ctx, \ | |
733 | lttng_alignof(*__ctf_tmp_string)); \ | |
f9ec4a97 MD |
734 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ |
735 | __get_dynamic_len(dest)); \ | |
24a39530 PP |
736 | } |
737 | ||
1c324e59 | 738 | |
c785c634 MD |
739 | #undef _ctf_enum |
740 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
741 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
742 | ||
1c324e59 MD |
743 | /* Beware: this get len actually consumes the len value */ |
744 | #undef __get_dynamic_len | |
d71b57b9 | 745 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 MD |
746 | |
747 | #undef TP_ARGS | |
2eda209b | 748 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
749 | |
750 | #undef TP_FIELDS | |
2eda209b | 751 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 752 | |
95c25348 PW |
753 | /* |
754 | * For state dump, check that "session" argument (mandatory) matches the | |
755 | * session this event belongs to. Ensures that we write state dump data only | |
756 | * into the started session, not into all sessions. | |
757 | */ | |
758 | #undef _TP_SESSION_CHECK | |
759 | #ifdef TP_SESSION_CHECK | |
760 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
761 | #else /* TP_SESSION_CHECK */ | |
762 | #define _TP_SESSION_CHECK(session, csession) 1 | |
763 | #endif /* TP_SESSION_CHECK */ | |
764 | ||
97904b41 MD |
765 | /* |
766 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
767 | * corruption on 32-bit PowerPC. Disable this feature on that | |
768 | * architecture for now by always using the NULL value for the ip | |
769 | * context. | |
770 | */ | |
5dadb547 MD |
771 | #undef _TP_IP_PARAM |
772 | #ifdef TP_IP_PARAM | |
e1d09f9e | 773 | #define _TP_IP_PARAM(x) (x) |
5dadb547 | 774 | #else /* TP_IP_PARAM */ |
97904b41 | 775 | |
2eba8e39 | 776 | #if defined(LTTNG_UST_ARCH_PPC) && !defined(LTTNG_UST_ARCH_PPC64) |
97904b41 | 777 | #define _TP_IP_PARAM(x) NULL |
2eba8e39 | 778 | #else |
e1d09f9e | 779 | #define _TP_IP_PARAM(x) __builtin_return_address(0) |
2eba8e39 | 780 | #endif |
97904b41 | 781 | |
5dadb547 MD |
782 | #endif /* TP_IP_PARAM */ |
783 | ||
1ddfd641 MD |
784 | /* |
785 | * Using twice size for filter stack data to hold size and pointer for | |
786 | * each field (worse case). For integers, max size required is 64-bit. | |
787 | * Same for double-precision floats. Those fit within | |
788 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 789 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 790 | */ |
f8021d08 CB |
791 | #undef _TRACEPOINT_EVENT_CLASS |
792 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
793 | static lttng_ust_notrace \ |
794 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
795 | static \ | |
796 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 797 | { \ |
ba99fbe2 | 798 | struct lttng_ust_event_common *__event = (struct lttng_ust_event_common *) __tp_data; \ |
1c324e59 | 799 | size_t __dynamic_len_idx = 0; \ |
75026e9f | 800 | const size_t __num_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1; \ |
d71b57b9 | 801 | union { \ |
75026e9f | 802 | size_t __dynamic_len[__num_fields]; \ |
ba99fbe2 | 803 | char __interpreter_stack_data[2 * sizeof(unsigned long) * __num_fields]; \ |
d71b57b9 | 804 | } __stackvar; \ |
1c324e59 | 805 | int __ret; \ |
a2e4d05e | 806 | bool __interpreter_stack_prepared = false; \ |
1c324e59 MD |
807 | \ |
808 | if (0) \ | |
809 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
ba99fbe2 MD |
810 | switch (__event->type) { \ |
811 | case LTTNG_UST_EVENT_TYPE_RECORDER: \ | |
812 | { \ | |
813 | struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \ | |
e7bc0ef6 MD |
814 | struct lttng_ust_channel_buffer *__chan = __event_recorder->chan; \ |
815 | struct lttng_ust_channel_common *__chan_common = __chan->parent; \ | |
ba99fbe2 | 816 | \ |
e7bc0ef6 | 817 | if (!_TP_SESSION_CHECK(session, __chan_common->session)) \ |
ba99fbe2 | 818 | return; \ |
e7bc0ef6 | 819 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan_common->session->active))) \ |
ba99fbe2 | 820 | return; \ |
e7bc0ef6 | 821 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan_common->enabled))) \ |
ba99fbe2 MD |
822 | return; \ |
823 | break; \ | |
824 | } \ | |
825 | case LTTNG_UST_EVENT_TYPE_NOTIFIER: \ | |
826 | break; \ | |
827 | } \ | |
828 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
1c324e59 | 829 | return; \ |
1b436e01 MD |
830 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
831 | return; \ | |
a2e4d05e | 832 | if (caa_unlikely(CMM_ACCESS_ONCE(__event->eval_filter))) { \ |
ba99fbe2 | 833 | __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ |
f488575f | 834 | _TP_ARGS_DATA_VAR(_args)); \ |
a2e4d05e MD |
835 | __interpreter_stack_prepared = true; \ |
836 | if (caa_likely(__event->run_filter(__event, \ | |
837 | __stackvar.__interpreter_stack_data, NULL) != LTTNG_UST_EVENT_FILTER_ACCEPT)) \ | |
61ce3223 | 838 | return; \ |
1ddfd641 | 839 | } \ |
ba99fbe2 MD |
840 | switch (__event->type) { \ |
841 | case LTTNG_UST_EVENT_TYPE_RECORDER: \ | |
842 | { \ | |
843 | size_t __event_len, __event_align; \ | |
844 | struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \ | |
e7bc0ef6 | 845 | struct lttng_ust_channel_buffer *__chan = __event_recorder->chan; \ |
ba99fbe2 | 846 | struct lttng_ust_lib_ring_buffer_ctx __ctx; \ |
2a9d9339 | 847 | struct lttng_ust_stack_ctx __lttng_ctx; \ |
ba99fbe2 MD |
848 | \ |
849 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
850 | _TP_ARGS_DATA_VAR(_args)); \ | |
851 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
852 | memset(&__lttng_ctx, 0, sizeof(__lttng_ctx)); \ | |
2a9d9339 | 853 | __lttng_ctx.struct_size = sizeof(struct lttng_ust_stack_ctx); \ |
ba99fbe2 | 854 | __lttng_ctx.event_recorder = __event_recorder; \ |
ba99fbe2 MD |
855 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_ctx, __event_len, \ |
856 | __event_align, -1, __chan->handle); \ | |
857 | __ctx.ip = _TP_IP_PARAM(TP_IP_PARAM); \ | |
858 | __ret = __chan->ops->event_reserve(&__ctx, __event_recorder->id); \ | |
859 | if (__ret < 0) \ | |
860 | return; \ | |
861 | _fields \ | |
862 | __chan->ops->event_commit(&__ctx); \ | |
863 | break; \ | |
864 | } \ | |
865 | case LTTNG_UST_EVENT_TYPE_NOTIFIER: \ | |
866 | { \ | |
867 | struct lttng_ust_event_notifier *__event_notifier = (struct lttng_ust_event_notifier *) __event->child; \ | |
a2e4d05e MD |
868 | struct lttng_ust_notification_ctx __notif_ctx; \ |
869 | \ | |
870 | __notif_ctx.struct_size = sizeof(struct lttng_ust_notification_ctx); \ | |
871 | __notif_ctx.eval_capture = CMM_ACCESS_ONCE(__event_notifier->eval_capture); \ | |
ba99fbe2 | 872 | \ |
a2e4d05e | 873 | if (caa_unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ |
ba99fbe2 MD |
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, \ | |
a2e4d05e MD |
878 | __stackvar.__interpreter_stack_data, \ |
879 | &__notif_ctx); \ | |
ba99fbe2 MD |
880 | break; \ |
881 | } \ | |
882 | } \ | |
1c324e59 MD |
883 | } |
884 | ||
885 | #include TRACEPOINT_INCLUDE | |
886 | ||
887 | #undef __get_dynamic_len | |
888 | ||
68755429 MD |
889 | /* |
890 | * Stage 5.1 of tracepoint event generation. | |
891 | * | |
892 | * Create probe signature | |
893 | */ | |
894 | ||
895 | /* Reset all macros within TRACEPOINT_EVENT */ | |
896 | #include <lttng/ust-tracepoint-event-reset.h> | |
897 | ||
898 | #undef TP_ARGS | |
2eda209b | 899 | #define TP_ARGS(...) __VA_ARGS__ |
9eb06182 MD |
900 | |
901 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 | 902 | |
f8021d08 CB |
903 | #undef _TRACEPOINT_EVENT_CLASS |
904 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
ff82b7c1 | 905 | static const char __tp_event_signature___##_provider##___##_name[] = \ |
9eb06182 | 906 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
907 | |
908 | #include TRACEPOINT_INCLUDE | |
909 | ||
9eb06182 MD |
910 | #undef _TP_EXTRACT_STRING2 |
911 | ||
05ceaafd | 912 | /* |
882a56d7 | 913 | * Stage 6 of tracepoint event generation. |
1c324e59 | 914 | * |
df854e41 MD |
915 | * Tracepoint loglevel mapping definition generation. We generate a |
916 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
917 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
918 | * the compiler will complain. | |
05ceaafd MD |
919 | */ |
920 | ||
921 | /* Reset all macros within TRACEPOINT_EVENT */ | |
922 | #include <lttng/ust-tracepoint-event-reset.h> | |
923 | ||
4ea4f80e MD |
924 | /* |
925 | * Declare _loglevel___##__provider##___##__name as non-static, with | |
926 | * hidden visibility for c++ handling of weakref. We do a weakref to the | |
927 | * symbol in a later stage, which requires that the symbol is not | |
928 | * mangled. | |
929 | */ | |
930 | #ifdef __cplusplus | |
931 | #define LTTNG_TP_EXTERN_C extern "C" | |
932 | #else | |
933 | #define LTTNG_TP_EXTERN_C | |
934 | #endif | |
935 | ||
05ceaafd | 936 | #undef TRACEPOINT_LOGLEVEL |
457a6b58 MD |
937 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
938 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
4ea4f80e MD |
939 | LTTNG_TP_EXTERN_C const int *_loglevel___##__provider##___##__name \ |
940 | __attribute__((visibility("hidden"))) = \ | |
457a6b58 | 941 | &_loglevel_value___##__provider##___##__name; |
df854e41 MD |
942 | |
943 | #include TRACEPOINT_INCLUDE | |
944 | ||
4ea4f80e | 945 | #undef LTTNG_TP_EXTERN_C |
4ea4f80e | 946 | |
6ddc916d MD |
947 | /* |
948 | * Stage 6.1 of tracepoint event generation. | |
949 | * | |
950 | * Tracepoint UML URI info. | |
951 | */ | |
952 | ||
953 | /* Reset all macros within TRACEPOINT_EVENT */ | |
954 | #include <lttng/ust-tracepoint-event-reset.h> | |
955 | ||
4ea4f80e MD |
956 | /* |
957 | * Declare _model_emf_uri___##__provider##___##__name as non-static, | |
958 | * with hidden visibility for c++ handling of weakref. We do a weakref | |
959 | * to the symbol in a later stage, which requires that the symbol is not | |
960 | * mangled. | |
961 | */ | |
962 | #ifdef __cplusplus | |
963 | #define LTTNG_TP_EXTERN_C extern "C" | |
964 | #else | |
965 | #define LTTNG_TP_EXTERN_C | |
966 | #endif | |
967 | ||
6ddc916d MD |
968 | #undef TRACEPOINT_MODEL_EMF_URI |
969 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
4ea4f80e | 970 | LTTNG_TP_EXTERN_C const char *_model_emf_uri___##__provider##___##__name \ |
082802f9 | 971 | __attribute__((visibility("hidden"))) = __uri; \ |
6ddc916d MD |
972 | |
973 | #include TRACEPOINT_INCLUDE | |
974 | ||
4ea4f80e | 975 | #undef LTTNG_TP_EXTERN_C |
4ea4f80e | 976 | |
df854e41 | 977 | /* |
882a56d7 | 978 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
979 | * |
980 | * Create events description structures. We use a weakref because | |
981 | * loglevels are optional. If not declared, the event will point to the | |
982 | * a loglevel that contains NULL. | |
983 | */ | |
984 | ||
985 | /* Reset all macros within TRACEPOINT_EVENT */ | |
986 | #include <lttng/ust-tracepoint-event-reset.h> | |
987 | ||
f8021d08 CB |
988 | #undef _TRACEPOINT_EVENT_INSTANCE |
989 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
990 | static const int * \ |
991 | __ref_loglevel___##_provider##___##_name \ | |
992 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
993 | static const char * \ |
994 | __ref_model_emf_uri___##_provider##___##_name \ | |
995 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
a084756d | 996 | static struct lttng_ust_event_desc __event_desc___##_provider##_##_name = { \ |
dc11f93f | 997 | .struct_size = sizeof(struct lttng_ust_event_desc), \ |
df854e41 | 998 | .name = #_provider ":" #_name, \ |
dc11f93f | 999 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template, \ |
46d52200 ZT |
1000 | .ctx = NULL, \ |
1001 | .fields = __event_fields___##_provider##___##_template, \ | |
1c80c909 | 1002 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template) - 1, \ |
882a56d7 | 1003 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 1004 | .signature = __tp_event_signature___##_provider##___##_template, \ |
dc11f93f | 1005 | .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \ |
df854e41 MD |
1006 | }; |
1007 | ||
1008 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 1009 | |
df854e41 | 1010 | /* |
882a56d7 | 1011 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
1012 | * |
1013 | * Create array of events. | |
1014 | */ | |
1015 | ||
1016 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1017 | #include <lttng/ust-tracepoint-event-reset.h> | |
1018 | ||
f8021d08 CB |
1019 | #undef _TRACEPOINT_EVENT_INSTANCE |
1020 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
df854e41 MD |
1021 | &__event_desc___##_provider##_##_name, |
1022 | ||
a084756d | 1023 | static struct lttng_ust_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { |
05ceaafd | 1024 | #include TRACEPOINT_INCLUDE |
1c80c909 | 1025 | NULL, /* Dummy, C99 forbids 0-len array. */ |
05ceaafd MD |
1026 | }; |
1027 | ||
df854e41 | 1028 | |
05ceaafd | 1029 | /* |
882a56d7 | 1030 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
1031 | * |
1032 | * Create a toplevel descriptor for the whole probe. | |
1033 | */ | |
1034 | ||
1035 | /* non-const because list head will be modified when registered. */ | |
dc11f93f MD |
1036 | static struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { |
1037 | .struct_size = sizeof(struct lttng_ust_probe_desc), | |
df854e41 | 1038 | .provider = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd | 1039 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
1c80c909 | 1040 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)) - 1, |
46d52200 ZT |
1041 | .head = { NULL, NULL }, |
1042 | .lazy_init_head = { NULL, NULL }, | |
1043 | .lazy = 0, | |
71d31690 MD |
1044 | .major = LTTNG_UST_PROVIDER_MAJOR, |
1045 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
1046 | }; |
1047 | ||
f0cc794d MD |
1048 | static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER); |
1049 | ||
05ceaafd | 1050 | /* |
882a56d7 | 1051 | * Stage 9 of tracepoint event generation. |
05ceaafd | 1052 | * |
1c324e59 | 1053 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
1054 | * |
1055 | * Generate the constructor as an externally visible symbol for use when | |
1056 | * linking the probe statically. | |
f0cc794d MD |
1057 | * |
1058 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
1059 | */ |
1060 | ||
1061 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1062 | #include <lttng/ust-tracepoint-event-reset.h> | |
a8909ba5 PW |
1063 | static void lttng_ust_notrace __attribute__((constructor)) |
1064 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void); | |
1065 | static void | |
1c324e59 MD |
1066 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) |
1067 | { | |
1068 | int ret; | |
1069 | ||
f0cc794d MD |
1070 | if (_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1071 | TRACEPOINT_PROVIDER)++) { | |
1072 | return; | |
1073 | } | |
e8bd1da7 MD |
1074 | /* |
1075 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
1076 | * static inline function that ensures every probe PROVIDER | |
1077 | * argument match the provider within which they appear. It | |
1078 | * calls empty static inline functions, and therefore has no | |
1079 | * runtime effect. However, if it detects an error, a linker | |
1080 | * error will appear. | |
1081 | */ | |
1082 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
dc11f93f | 1083 | ret = lttng_ust_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
7d381d6e | 1084 | if (ret) { |
0fdd0b89 | 1085 | fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe.\n", ret); |
7d381d6e MD |
1086 | abort(); |
1087 | } | |
1c324e59 MD |
1088 | } |
1089 | ||
a8909ba5 PW |
1090 | static void lttng_ust_notrace __attribute__((destructor)) |
1091 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void); | |
1092 | static void | |
1c324e59 MD |
1093 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) |
1094 | { | |
f0cc794d MD |
1095 | if (--_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1096 | TRACEPOINT_PROVIDER)) { | |
1097 | return; | |
1098 | } | |
dc11f93f | 1099 | lttng_ust_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 | 1100 | } |
628e1d81 | 1101 | |
6c8cfec7 MD |
1102 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER) |
1103 | __attribute__((visibility("default"))); |