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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 | ||
106ff4da MJ |
75 | static inline |
76 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void) | |
77 | lttng_ust_notrace; | |
1c324e59 MD |
78 | static inline |
79 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void) | |
80 | { | |
81 | } | |
82 | ||
f8021d08 CB |
83 | #undef _TRACEPOINT_EVENT_CLASS |
84 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
1c324e59 MD |
85 | __tracepoint_provider_mismatch_##_provider(); |
86 | ||
f8021d08 CB |
87 | #undef _TRACEPOINT_EVENT_INSTANCE |
88 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
1c324e59 MD |
89 | __tracepoint_provider_mismatch_##_provider(); |
90 | ||
106ff4da MJ |
91 | static inline |
92 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void) | |
93 | lttng_ust_notrace; | |
e8bd1da7 | 94 | static inline |
1c324e59 MD |
95 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void) |
96 | { | |
97 | #include TRACEPOINT_INCLUDE | |
98 | } | |
99 | ||
f56cd1d5 MD |
100 | /* |
101 | * Stage 0.1 of tracepoint event generation. | |
102 | * | |
103 | * Check that each TRACEPOINT_EVENT provider:name does not exceed the | |
104 | * tracepoint name length limit. | |
105 | */ | |
106 | ||
107 | /* Reset all macros within TRACEPOINT_EVENT */ | |
108 | #include <lttng/ust-tracepoint-event-reset.h> | |
109 | ||
f8021d08 CB |
110 | #undef _TRACEPOINT_EVENT_INSTANCE |
111 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
f56cd1d5 | 112 | static const char \ |
fd17d7ce | 113 | __tp_name_len_check##_provider##___##_name[LTTNG_UST_ABI_SYM_NAME_LEN] \ |
f56cd1d5 MD |
114 | __attribute__((unused)) = \ |
115 | #_provider ":" #_name; | |
116 | ||
117 | #include TRACEPOINT_INCLUDE | |
118 | ||
c75c0422 MD |
119 | /* |
120 | * Stage 0.2 of tracepoint event generation. | |
121 | * | |
122 | * Create dummy trace prototypes for each event class, and for each used | |
123 | * template. This will allow checking whether the prototypes from the | |
124 | * class and the instance using the class actually match. | |
125 | */ | |
126 | ||
127 | /* Reset all macros within TRACEPOINT_EVENT */ | |
128 | #include <lttng/ust-tracepoint-event-reset.h> | |
129 | ||
130 | #undef TP_ARGS | |
131 | #define TP_ARGS(...) __VA_ARGS__ | |
132 | ||
f8021d08 CB |
133 | #undef _TRACEPOINT_EVENT_INSTANCE |
134 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
c75c0422 MD |
135 | void __event_template_proto___##_provider##___##_template(_TP_ARGS_DATA_PROTO(_args)); |
136 | ||
f8021d08 CB |
137 | #undef _TRACEPOINT_EVENT_CLASS |
138 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
c75c0422 MD |
139 | void __event_template_proto___##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); |
140 | ||
141 | #include TRACEPOINT_INCLUDE | |
142 | ||
c785c634 MD |
143 | /* |
144 | * Stage 0.9 of tracepoint event generation | |
145 | * | |
146 | * Unfolding the enums | |
147 | */ | |
148 | #include <lttng/ust-tracepoint-event-reset.h> | |
149 | ||
150 | /* Enumeration entry (single value) */ | |
151 | #undef ctf_enum_value | |
152 | #define ctf_enum_value(_string, _value) \ | |
891d6b55 MD |
153 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, { \ |
154 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ | |
a6f80644 | 155 | .start = { \ |
eae3c729 | 156 | .value = lttng_ust_is_signed_type(__typeof__(_value)) ? \ |
a6f80644 | 157 | (long long) (_value) : (_value), \ |
eae3c729 | 158 | .signedness = lttng_ust_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
159 | }, \ |
160 | .end = { \ | |
eae3c729 | 161 | .value = lttng_ust_is_signed_type(__typeof__(_value)) ? \ |
a6f80644 | 162 | (long long) (_value) : (_value), \ |
eae3c729 | 163 | .signedness = lttng_ust_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
164 | }, \ |
165 | .string = (_string), \ | |
891d6b55 | 166 | }), |
c785c634 MD |
167 | |
168 | /* Enumeration entry (range) */ | |
169 | #undef ctf_enum_range | |
170 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
891d6b55 MD |
171 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, { \ |
172 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ | |
a6f80644 | 173 | .start = { \ |
eae3c729 | 174 | .value = lttng_ust_is_signed_type(__typeof__(_range_start)) ? \ |
a6f80644 | 175 | (long long) (_range_start) : (_range_start), \ |
eae3c729 | 176 | .signedness = lttng_ust_is_signed_type(__typeof__(_range_start)), \ |
a6f80644 MD |
177 | }, \ |
178 | .end = { \ | |
eae3c729 | 179 | .value = lttng_ust_is_signed_type(__typeof__(_range_end)) ? \ |
a6f80644 | 180 | (long long) (_range_end) : (_range_end), \ |
eae3c729 | 181 | .signedness = lttng_ust_is_signed_type(__typeof__(_range_end)), \ |
a6f80644 MD |
182 | }, \ |
183 | .string = (_string), \ | |
891d6b55 | 184 | }), |
c785c634 | 185 | |
3e762260 PP |
186 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
187 | #undef ctf_enum_auto | |
891d6b55 MD |
188 | #define ctf_enum_auto(_string) \ |
189 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, { \ | |
190 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ | |
3e762260 PP |
191 | .start = { \ |
192 | .value = -1ULL, \ | |
193 | .signedness = 0, \ | |
194 | }, \ | |
195 | .end = { \ | |
196 | .value = -1ULL, \ | |
197 | .signedness = 0, \ | |
198 | }, \ | |
199 | .string = (_string), \ | |
1a37a873 | 200 | .options = LTTNG_UST_ENUM_ENTRY_OPTION_IS_AUTO, \ |
891d6b55 | 201 | }), |
3e762260 | 202 | |
c785c634 MD |
203 | #undef TP_ENUM_VALUES |
204 | #define TP_ENUM_VALUES(...) \ | |
205 | __VA_ARGS__ | |
206 | ||
207 | #undef TRACEPOINT_ENUM | |
208 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
a084756d | 209 | struct lttng_ust_enum_entry *__enum_values__##_provider##_##_name[] = { \ |
c785c634 | 210 | _values \ |
1c80c909 | 211 | ctf_enum_value("", 0) /* Dummy, 0-len array forbidden by C99. */ \ |
c785c634 | 212 | }; |
2df82195 FD |
213 | #include TRACEPOINT_INCLUDE |
214 | ||
215 | /* | |
216 | * Stage 0.9.1 | |
217 | * Verifying array and sequence elements are of an integer type. | |
218 | */ | |
219 | ||
220 | /* Reset all macros within TRACEPOINT_EVENT */ | |
221 | #include <lttng/ust-tracepoint-event-reset.h> | |
222 | #include <lttng/ust-tracepoint-event-write.h> | |
223 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
224 | ||
225 | #undef _ctf_array_encoded | |
226 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ | |
227 | _length, _encoding, _nowrite, \ | |
228 | _elem_type_base) \ | |
eae3c729 | 229 | lttng_ust_ctf_array_element_type_is_supported(_type, _item) |
2df82195 FD |
230 | |
231 | #undef _ctf_sequence_encoded | |
232 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ | |
233 | _length_type, _src_length, _encoding, _nowrite, \ | |
234 | _elem_type_base) \ | |
eae3c729 | 235 | lttng_ust_ctf_array_element_type_is_supported(_type, _item) |
2df82195 FD |
236 | |
237 | #undef TP_FIELDS | |
238 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
239 | ||
f8021d08 CB |
240 | #undef _TRACEPOINT_EVENT_CLASS |
241 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
2df82195 | 242 | _fields |
c785c634 MD |
243 | |
244 | #include TRACEPOINT_INCLUDE | |
245 | ||
1c324e59 MD |
246 | /* |
247 | * Stage 1 of tracepoint event generation. | |
248 | * | |
249 | * Create event field type metadata section. | |
250 | * Each event produce an array of fields. | |
251 | */ | |
252 | ||
253 | /* Reset all macros within TRACEPOINT_EVENT */ | |
254 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
255 | #include <lttng/ust-tracepoint-event-write.h> |
256 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 257 | |
4774c8f3 | 258 | #undef _ctf_integer_ext |
25cff019 | 259 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
a084756d | 260 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
261 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
262 | .name = #_item, \ | |
a084756d | 263 | .type = lttng_ust_type_integer_define(_type, _byte_order, _base), \ |
25cff019 MD |
264 | .nowrite = _nowrite, \ |
265 | .nofilter = 0, \ | |
266 | }), | |
1c324e59 | 267 | |
4774c8f3 | 268 | #undef _ctf_float |
180901e6 | 269 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
a084756d | 270 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
271 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
272 | .name = #_item, \ | |
a084756d | 273 | .type = lttng_ust_type_float_define(_type), \ |
25cff019 MD |
274 | .nowrite = _nowrite, \ |
275 | .nofilter = 0, \ | |
276 | }), | |
1c324e59 | 277 | |
4774c8f3 | 278 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
279 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ |
280 | _length, _encoding, _nowrite, \ | |
281 | _elem_type_base) \ | |
a084756d | 282 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
283 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
284 | .name = #_item, \ | |
a084756d MD |
285 | .type = (struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(struct lttng_ust_type_array, { \ |
286 | .parent = { \ | |
287 | .type = lttng_ust_type_array, \ | |
288 | }, \ | |
289 | .struct_size = sizeof(struct lttng_ust_type_array), \ | |
290 | .elem_type = lttng_ust_type_integer_define(_type, _byte_order, _elem_type_base), \ | |
291 | .length = _length, \ | |
292 | .alignment = 0, \ | |
293 | .encoding = lttng_ust_string_encoding_##_encoding, \ | |
294 | }), \ | |
25cff019 MD |
295 | .nowrite = _nowrite, \ |
296 | .nofilter = 0, \ | |
297 | }), | |
1c324e59 | 298 | |
4774c8f3 | 299 | #undef _ctf_sequence_encoded |
48d660d1 | 300 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ |
f968510a PP |
301 | _length_type, _src_length, _encoding, _nowrite, \ |
302 | _elem_type_base) \ | |
a084756d | 303 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
304 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
305 | .name = "_" #_item "_length", \ | |
a084756d | 306 | .type = lttng_ust_type_integer_define(_length_type, BYTE_ORDER, 10), \ |
25cff019 MD |
307 | .nowrite = _nowrite, \ |
308 | .nofilter = 1, \ | |
309 | }), \ | |
a084756d | 310 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
311 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
312 | .name = #_item, \ | |
a084756d MD |
313 | .type = (struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(struct lttng_ust_type_sequence, { \ |
314 | .parent = { \ | |
315 | .type = lttng_ust_type_sequence, \ | |
1c324e59 | 316 | }, \ |
a084756d MD |
317 | .struct_size = sizeof(struct lttng_ust_type_sequence), \ |
318 | .length_name = "_" #_item "_length", \ | |
319 | .elem_type = lttng_ust_type_integer_define(_type, _byte_order, _elem_type_base), \ | |
320 | .alignment = 0, \ | |
321 | .encoding = lttng_ust_string_encoding_##_encoding, \ | |
322 | }), \ | |
25cff019 MD |
323 | .nowrite = _nowrite, \ |
324 | .nofilter = 0, \ | |
325 | }), | |
1c324e59 | 326 | |
4774c8f3 | 327 | #undef _ctf_string |
180901e6 | 328 | #define _ctf_string(_item, _src, _nowrite) \ |
a084756d | 329 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 MD |
330 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
331 | .name = #_item, \ | |
a084756d MD |
332 | .type = (struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(struct lttng_ust_type_string, { \ |
333 | .parent = { \ | |
334 | .type = lttng_ust_type_string, \ | |
46d52200 | 335 | }, \ |
a084756d MD |
336 | .struct_size = sizeof(struct lttng_ust_type_string), \ |
337 | .encoding = lttng_ust_string_encoding_UTF8, \ | |
338 | }), \ | |
25cff019 MD |
339 | .nowrite = _nowrite, \ |
340 | .nofilter = 0, \ | |
341 | }), | |
1c324e59 | 342 | |
c785c634 MD |
343 | #undef _ctf_enum |
344 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
a084756d | 345 | __LTTNG_COMPOUND_LITERAL(struct lttng_ust_event_field, { \ |
25cff019 | 346 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
c785c634 | 347 | .name = #_item, \ |
a084756d MD |
348 | .type = (struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(struct lttng_ust_type_enum, { \ |
349 | .parent = { \ | |
350 | .type = lttng_ust_type_enum, \ | |
c785c634 | 351 | }, \ |
a084756d MD |
352 | .struct_size = sizeof(struct lttng_ust_type_enum), \ |
353 | .desc = &__enum_##_provider##_##_name, \ | |
354 | .container_type = lttng_ust_type_integer_define(_type, BYTE_ORDER, 10), \ | |
355 | }), \ | |
c785c634 | 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) \ | |
a084756d | 365 | static 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) \ | |
a084756d MD |
372 | static 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) \ |
dc325c1d | 411 | __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \ |
1c324e59 MD |
412 | __event_len += sizeof(_type); |
413 | ||
4774c8f3 | 414 | #undef _ctf_float |
180901e6 | 415 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
dc325c1d | 416 | __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \ |
1c324e59 MD |
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) \ | |
dc325c1d | 422 | __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \ |
1c324e59 MD |
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) \ |
dc325c1d | 428 | __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_length_type)); \ |
1c324e59 | 429 | __event_len += sizeof(_length_type); \ |
dc325c1d | 430 | __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \ |
1c324e59 MD |
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) \ | |
106ff4da MJ |
452 | static inline \ |
453 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
454 | lttng_ust_notrace; \ | |
a8909ba5 PW |
455 | static inline \ |
456 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
457 | { \ |
458 | size_t __event_len = 0; \ | |
459 | unsigned int __dynamic_len_idx = 0; \ | |
460 | \ | |
461 | if (0) \ | |
462 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
463 | _fields \ | |
464 | return __event_len; \ | |
465 | } | |
466 | ||
467 | #include TRACEPOINT_INCLUDE | |
468 | ||
1ddfd641 MD |
469 | /* |
470 | * Stage 3.1 of tracepoint event generation. | |
471 | * | |
472 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 473 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
474 | */ |
475 | ||
476 | /* Reset all macros within TRACEPOINT_EVENT */ | |
477 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
478 | #include <lttng/ust-tracepoint-event-write.h> |
479 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 480 | |
4774c8f3 | 481 | #undef _ctf_integer_ext |
180901e6 | 482 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
eae3c729 | 483 | if (lttng_ust_is_signed_type(_type)) { \ |
3ebeea0d MD |
484 | int64_t __ctf_tmp_int64; \ |
485 | switch (sizeof(_type)) { \ | |
486 | case 1: \ | |
487 | { \ | |
488 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
489 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
490 | break; \ | |
491 | } \ | |
492 | case 2: \ | |
493 | { \ | |
494 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
495 | if (_byte_order != BYTE_ORDER) \ |
496 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
497 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
498 | break; \ | |
499 | } \ | |
500 | case 4: \ | |
501 | { \ | |
502 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
503 | if (_byte_order != BYTE_ORDER) \ |
504 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
505 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
506 | break; \ | |
507 | } \ | |
508 | case 8: \ | |
509 | { \ | |
510 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
511 | if (_byte_order != BYTE_ORDER) \ |
512 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
513 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
514 | break; \ | |
515 | } \ | |
516 | default: \ | |
517 | abort(); \ | |
518 | }; \ | |
fa099471 MD |
519 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ |
520 | } else { \ | |
3ebeea0d MD |
521 | uint64_t __ctf_tmp_uint64; \ |
522 | switch (sizeof(_type)) { \ | |
523 | case 1: \ | |
524 | { \ | |
525 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
526 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
527 | break; \ | |
528 | } \ | |
529 | case 2: \ | |
530 | { \ | |
531 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
532 | if (_byte_order != BYTE_ORDER) \ |
533 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
534 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
535 | break; \ | |
536 | } \ | |
537 | case 4: \ | |
538 | { \ | |
539 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
540 | if (_byte_order != BYTE_ORDER) \ |
541 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
542 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
543 | break; \ | |
544 | } \ | |
545 | case 8: \ | |
546 | { \ | |
547 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
548 | if (_byte_order != BYTE_ORDER) \ |
549 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
550 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
551 | break; \ | |
552 | } \ | |
553 | default: \ | |
554 | abort(); \ | |
555 | }; \ | |
fa099471 MD |
556 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ |
557 | } \ | |
1ddfd641 MD |
558 | __stack_data += sizeof(int64_t); |
559 | ||
4774c8f3 | 560 | #undef _ctf_float |
180901e6 | 561 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
562 | { \ |
563 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
564 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
565 | __stack_data += sizeof(double); \ | |
566 | } | |
1ddfd641 | 567 | |
4774c8f3 | 568 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
569 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
570 | _encoding, _nowrite, _elem_type_base) \ | |
fa099471 MD |
571 | { \ |
572 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 573 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
574 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
575 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
576 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
577 | __stack_data += sizeof(void *); \ | |
fa099471 | 578 | } |
1ddfd641 | 579 | |
4774c8f3 | 580 | #undef _ctf_sequence_encoded |
48d660d1 | 581 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 582 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
fa099471 MD |
583 | { \ |
584 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 585 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
586 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
587 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
588 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
589 | __stack_data += sizeof(void *); \ | |
fa099471 | 590 | } |
1ddfd641 | 591 | |
4774c8f3 | 592 | #undef _ctf_string |
180901e6 | 593 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 594 | { \ |
24a39530 PP |
595 | const void *__ctf_tmp_ptr = \ |
596 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
b1239ad6 MD |
597 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
598 | __stack_data += sizeof(void *); \ | |
fa099471 | 599 | } |
1ddfd641 | 600 | |
c785c634 MD |
601 | #undef _ctf_enum |
602 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
603 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
604 | ||
1ddfd641 MD |
605 | #undef TP_ARGS |
606 | #define TP_ARGS(...) __VA_ARGS__ | |
607 | ||
608 | #undef TP_FIELDS | |
609 | #define TP_FIELDS(...) __VA_ARGS__ | |
610 | ||
f8021d08 CB |
611 | #undef _TRACEPOINT_EVENT_CLASS |
612 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
1ddfd641 | 613 | static inline \ |
d37ecb3f | 614 | void __event_prepare_interpreter_stack__##_provider##___##_name(char *__stack_data,\ |
1ddfd641 MD |
615 | _TP_ARGS_DATA_PROTO(_args)) \ |
616 | { \ | |
617 | _fields \ | |
618 | } | |
619 | ||
620 | #include TRACEPOINT_INCLUDE | |
621 | ||
1c324e59 | 622 | /* |
df854e41 | 623 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
624 | * |
625 | * Create static inline function that calculates event payload alignment. | |
626 | */ | |
627 | ||
628 | /* Reset all macros within TRACEPOINT_EVENT */ | |
629 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 630 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 631 | |
4774c8f3 | 632 | #undef _ctf_integer_ext |
180901e6 | 633 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
dc325c1d | 634 | __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type)); |
1c324e59 | 635 | |
4774c8f3 | 636 | #undef _ctf_float |
180901e6 | 637 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
dc325c1d | 638 | __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type)); |
1c324e59 | 639 | |
4774c8f3 | 640 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
641 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
642 | _encoding, _nowrite, _elem_type_base) \ | |
dc325c1d | 643 | __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type)); |
1c324e59 | 644 | |
4774c8f3 | 645 | #undef _ctf_sequence_encoded |
48d660d1 | 646 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 647 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
dc325c1d MJ |
648 | __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_length_type)); \ |
649 | __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type)); | |
1c324e59 | 650 | |
4774c8f3 | 651 | #undef _ctf_string |
180901e6 | 652 | #define _ctf_string(_item, _src, _nowrite) |
1c324e59 | 653 | |
c785c634 MD |
654 | #undef _ctf_enum |
655 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
656 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
657 | ||
1c324e59 | 658 | #undef TP_ARGS |
2eda209b | 659 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
660 | |
661 | #undef TP_FIELDS | |
2eda209b | 662 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 663 | |
f8021d08 CB |
664 | #undef _TRACEPOINT_EVENT_CLASS |
665 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
106ff4da MJ |
666 | static inline \ |
667 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
668 | lttng_ust_notrace; \ | |
1c324e59 MD |
669 | static inline \ |
670 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
671 | { \ | |
672 | size_t __event_align = 1; \ | |
673 | _fields \ | |
674 | return __event_align; \ | |
675 | } | |
676 | ||
677 | #include TRACEPOINT_INCLUDE | |
678 | ||
679 | ||
680 | /* | |
df854e41 | 681 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
682 | * |
683 | * Create the probe function. This function calls event size calculation | |
684 | * and writes event data into the buffer. | |
685 | */ | |
686 | ||
687 | /* Reset all macros within TRACEPOINT_EVENT */ | |
688 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 689 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 690 | |
4774c8f3 | 691 | #undef _ctf_integer_ext |
180901e6 | 692 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
693 | { \ |
694 | _type __tmp = (_src); \ | |
8936b6c0 | 695 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp), lttng_ust_rb_alignof(__tmp));\ |
1c324e59 MD |
696 | } |
697 | ||
4774c8f3 | 698 | #undef _ctf_float |
180901e6 | 699 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
700 | { \ |
701 | _type __tmp = (_src); \ | |
8936b6c0 | 702 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp), lttng_ust_rb_alignof(__tmp));\ |
1c324e59 MD |
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) \ | |
27927814 | 708 | if (lttng_ust_string_encoding_##_encoding == lttng_ust_string_encoding_none) \ |
8936b6c0 | 709 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length), lttng_ust_rb_alignof(_type)); \ |
27927814 | 710 | else \ |
879f9b0a | 711 | __chan->ops->event_pstrcpy_pad(&__ctx, (const char *) (_src), _length); \ |
1c324e59 | 712 | |
4774c8f3 | 713 | #undef _ctf_sequence_encoded |
48d660d1 | 714 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 715 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 | 716 | { \ |
d71b57b9 | 717 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
8936b6c0 | 718 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type), lttng_ust_rb_alignof(_length_type));\ |
1c324e59 | 719 | } \ |
27927814 MD |
720 | if (lttng_ust_string_encoding_##_encoding == lttng_ust_string_encoding_none) \ |
721 | __chan->ops->event_write(&__ctx, _src, \ | |
8936b6c0 | 722 | sizeof(_type) * __get_dynamic_len(dest), lttng_ust_rb_alignof(_type)); \ |
27927814 | 723 | else \ |
879f9b0a | 724 | __chan->ops->event_pstrcpy_pad(&__ctx, (const char *) (_src), __get_dynamic_len(dest)); \ |
1c324e59 | 725 | |
4774c8f3 | 726 | #undef _ctf_string |
8936b6c0 | 727 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
728 | { \ |
729 | const char *__ctf_tmp_string = \ | |
730 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
f9ec4a97 MD |
731 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ |
732 | __get_dynamic_len(dest)); \ | |
24a39530 PP |
733 | } |
734 | ||
1c324e59 | 735 | |
c785c634 MD |
736 | #undef _ctf_enum |
737 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
738 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
739 | ||
1c324e59 MD |
740 | /* Beware: this get len actually consumes the len value */ |
741 | #undef __get_dynamic_len | |
d71b57b9 | 742 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 MD |
743 | |
744 | #undef TP_ARGS | |
2eda209b | 745 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
746 | |
747 | #undef TP_FIELDS | |
2eda209b | 748 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 749 | |
95c25348 PW |
750 | /* |
751 | * For state dump, check that "session" argument (mandatory) matches the | |
752 | * session this event belongs to. Ensures that we write state dump data only | |
753 | * into the started session, not into all sessions. | |
754 | */ | |
755 | #undef _TP_SESSION_CHECK | |
756 | #ifdef TP_SESSION_CHECK | |
757 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
758 | #else /* TP_SESSION_CHECK */ | |
759 | #define _TP_SESSION_CHECK(session, csession) 1 | |
760 | #endif /* TP_SESSION_CHECK */ | |
761 | ||
97904b41 MD |
762 | /* |
763 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
764 | * corruption on 32-bit PowerPC. Disable this feature on that | |
765 | * architecture for now by always using the NULL value for the ip | |
766 | * context. | |
767 | */ | |
5dadb547 MD |
768 | #undef _TP_IP_PARAM |
769 | #ifdef TP_IP_PARAM | |
e1d09f9e | 770 | #define _TP_IP_PARAM(x) (x) |
5dadb547 | 771 | #else /* TP_IP_PARAM */ |
97904b41 | 772 | |
2eba8e39 | 773 | #if defined(LTTNG_UST_ARCH_PPC) && !defined(LTTNG_UST_ARCH_PPC64) |
97904b41 | 774 | #define _TP_IP_PARAM(x) NULL |
2eba8e39 | 775 | #else |
e1d09f9e | 776 | #define _TP_IP_PARAM(x) __builtin_return_address(0) |
2eba8e39 | 777 | #endif |
97904b41 | 778 | |
5dadb547 MD |
779 | #endif /* TP_IP_PARAM */ |
780 | ||
1ddfd641 MD |
781 | /* |
782 | * Using twice size for filter stack data to hold size and pointer for | |
783 | * each field (worse case). For integers, max size required is 64-bit. | |
784 | * Same for double-precision floats. Those fit within | |
785 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 786 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 787 | */ |
f8021d08 CB |
788 | #undef _TRACEPOINT_EVENT_CLASS |
789 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
106ff4da MJ |
790 | static \ |
791 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
792 | lttng_ust_notrace; \ | |
a8909ba5 PW |
793 | static \ |
794 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 795 | { \ |
ba99fbe2 | 796 | struct lttng_ust_event_common *__event = (struct lttng_ust_event_common *) __tp_data; \ |
1c324e59 | 797 | size_t __dynamic_len_idx = 0; \ |
75026e9f | 798 | const size_t __num_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1; \ |
d71b57b9 | 799 | union { \ |
75026e9f | 800 | size_t __dynamic_len[__num_fields]; \ |
ba99fbe2 | 801 | char __interpreter_stack_data[2 * sizeof(unsigned long) * __num_fields]; \ |
d71b57b9 | 802 | } __stackvar; \ |
1c324e59 | 803 | int __ret; \ |
a2e4d05e | 804 | bool __interpreter_stack_prepared = false; \ |
1c324e59 MD |
805 | \ |
806 | if (0) \ | |
807 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
ba99fbe2 MD |
808 | switch (__event->type) { \ |
809 | case LTTNG_UST_EVENT_TYPE_RECORDER: \ | |
810 | { \ | |
811 | struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \ | |
e7bc0ef6 MD |
812 | struct lttng_ust_channel_buffer *__chan = __event_recorder->chan; \ |
813 | struct lttng_ust_channel_common *__chan_common = __chan->parent; \ | |
ba99fbe2 | 814 | \ |
e7bc0ef6 | 815 | if (!_TP_SESSION_CHECK(session, __chan_common->session)) \ |
ba99fbe2 | 816 | return; \ |
e7bc0ef6 | 817 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan_common->session->active))) \ |
ba99fbe2 | 818 | return; \ |
e7bc0ef6 | 819 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan_common->enabled))) \ |
ba99fbe2 MD |
820 | return; \ |
821 | break; \ | |
822 | } \ | |
823 | case LTTNG_UST_EVENT_TYPE_NOTIFIER: \ | |
824 | break; \ | |
825 | } \ | |
826 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
1c324e59 | 827 | return; \ |
1b436e01 MD |
828 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
829 | return; \ | |
a2e4d05e | 830 | if (caa_unlikely(CMM_ACCESS_ONCE(__event->eval_filter))) { \ |
ba99fbe2 | 831 | __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ |
f488575f | 832 | _TP_ARGS_DATA_VAR(_args)); \ |
a2e4d05e MD |
833 | __interpreter_stack_prepared = true; \ |
834 | if (caa_likely(__event->run_filter(__event, \ | |
835 | __stackvar.__interpreter_stack_data, NULL) != LTTNG_UST_EVENT_FILTER_ACCEPT)) \ | |
61ce3223 | 836 | return; \ |
1ddfd641 | 837 | } \ |
ba99fbe2 MD |
838 | switch (__event->type) { \ |
839 | case LTTNG_UST_EVENT_TYPE_RECORDER: \ | |
840 | { \ | |
841 | size_t __event_len, __event_align; \ | |
842 | struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \ | |
e7bc0ef6 | 843 | struct lttng_ust_channel_buffer *__chan = __event_recorder->chan; \ |
ba99fbe2 | 844 | struct lttng_ust_lib_ring_buffer_ctx __ctx; \ |
ba99fbe2 MD |
845 | \ |
846 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
847 | _TP_ARGS_DATA_VAR(_args)); \ | |
848 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
8936b6c0 MD |
849 | lttng_ust_lib_ring_buffer_ctx_init(&__ctx, __event_recorder, __event_len, __event_align, \ |
850 | _TP_IP_PARAM(TP_IP_PARAM)); \ | |
851 | __ret = __chan->ops->event_reserve(&__ctx); \ | |
ba99fbe2 MD |
852 | if (__ret < 0) \ |
853 | return; \ | |
854 | _fields \ | |
855 | __chan->ops->event_commit(&__ctx); \ | |
856 | break; \ | |
857 | } \ | |
858 | case LTTNG_UST_EVENT_TYPE_NOTIFIER: \ | |
859 | { \ | |
860 | struct lttng_ust_event_notifier *__event_notifier = (struct lttng_ust_event_notifier *) __event->child; \ | |
a2e4d05e MD |
861 | struct lttng_ust_notification_ctx __notif_ctx; \ |
862 | \ | |
863 | __notif_ctx.struct_size = sizeof(struct lttng_ust_notification_ctx); \ | |
864 | __notif_ctx.eval_capture = CMM_ACCESS_ONCE(__event_notifier->eval_capture); \ | |
ba99fbe2 | 865 | \ |
a2e4d05e | 866 | if (caa_unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ |
ba99fbe2 MD |
867 | __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ |
868 | _TP_ARGS_DATA_VAR(_args)); \ | |
869 | \ | |
870 | __event_notifier->notification_send(__event_notifier, \ | |
a2e4d05e MD |
871 | __stackvar.__interpreter_stack_data, \ |
872 | &__notif_ctx); \ | |
ba99fbe2 MD |
873 | break; \ |
874 | } \ | |
875 | } \ | |
1c324e59 MD |
876 | } |
877 | ||
878 | #include TRACEPOINT_INCLUDE | |
879 | ||
880 | #undef __get_dynamic_len | |
881 | ||
68755429 MD |
882 | /* |
883 | * Stage 5.1 of tracepoint event generation. | |
884 | * | |
885 | * Create probe signature | |
886 | */ | |
887 | ||
888 | /* Reset all macros within TRACEPOINT_EVENT */ | |
889 | #include <lttng/ust-tracepoint-event-reset.h> | |
890 | ||
891 | #undef TP_ARGS | |
2eda209b | 892 | #define TP_ARGS(...) __VA_ARGS__ |
9eb06182 MD |
893 | |
894 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 | 895 | |
f8021d08 CB |
896 | #undef _TRACEPOINT_EVENT_CLASS |
897 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
ff82b7c1 | 898 | static const char __tp_event_signature___##_provider##___##_name[] = \ |
9eb06182 | 899 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
900 | |
901 | #include TRACEPOINT_INCLUDE | |
902 | ||
9eb06182 MD |
903 | #undef _TP_EXTRACT_STRING2 |
904 | ||
05ceaafd | 905 | /* |
882a56d7 | 906 | * Stage 6 of tracepoint event generation. |
1c324e59 | 907 | * |
df854e41 MD |
908 | * Tracepoint loglevel mapping definition generation. We generate a |
909 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
910 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
911 | * the compiler will complain. | |
05ceaafd MD |
912 | */ |
913 | ||
914 | /* Reset all macros within TRACEPOINT_EVENT */ | |
915 | #include <lttng/ust-tracepoint-event-reset.h> | |
916 | ||
4ea4f80e MD |
917 | /* |
918 | * Declare _loglevel___##__provider##___##__name as non-static, with | |
919 | * hidden visibility for c++ handling of weakref. We do a weakref to the | |
920 | * symbol in a later stage, which requires that the symbol is not | |
921 | * mangled. | |
922 | */ | |
923 | #ifdef __cplusplus | |
924 | #define LTTNG_TP_EXTERN_C extern "C" | |
925 | #else | |
926 | #define LTTNG_TP_EXTERN_C | |
927 | #endif | |
928 | ||
05ceaafd | 929 | #undef TRACEPOINT_LOGLEVEL |
457a6b58 MD |
930 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
931 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
4ea4f80e MD |
932 | LTTNG_TP_EXTERN_C const int *_loglevel___##__provider##___##__name \ |
933 | __attribute__((visibility("hidden"))) = \ | |
457a6b58 | 934 | &_loglevel_value___##__provider##___##__name; |
df854e41 MD |
935 | |
936 | #include TRACEPOINT_INCLUDE | |
937 | ||
4ea4f80e | 938 | #undef LTTNG_TP_EXTERN_C |
4ea4f80e | 939 | |
6ddc916d MD |
940 | /* |
941 | * Stage 6.1 of tracepoint event generation. | |
942 | * | |
943 | * Tracepoint UML URI info. | |
944 | */ | |
945 | ||
946 | /* Reset all macros within TRACEPOINT_EVENT */ | |
947 | #include <lttng/ust-tracepoint-event-reset.h> | |
948 | ||
4ea4f80e MD |
949 | /* |
950 | * Declare _model_emf_uri___##__provider##___##__name as non-static, | |
951 | * with hidden visibility for c++ handling of weakref. We do a weakref | |
952 | * to the symbol in a later stage, which requires that the symbol is not | |
953 | * mangled. | |
954 | */ | |
955 | #ifdef __cplusplus | |
956 | #define LTTNG_TP_EXTERN_C extern "C" | |
957 | #else | |
958 | #define LTTNG_TP_EXTERN_C | |
959 | #endif | |
960 | ||
6ddc916d MD |
961 | #undef TRACEPOINT_MODEL_EMF_URI |
962 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
4ea4f80e | 963 | LTTNG_TP_EXTERN_C const char *_model_emf_uri___##__provider##___##__name \ |
082802f9 | 964 | __attribute__((visibility("hidden"))) = __uri; \ |
6ddc916d MD |
965 | |
966 | #include TRACEPOINT_INCLUDE | |
967 | ||
4ea4f80e | 968 | #undef LTTNG_TP_EXTERN_C |
4ea4f80e | 969 | |
5b4c6da4 MD |
970 | /* |
971 | * Stage 7.0 of tracepoint event generation. | |
972 | * | |
973 | * Declare toplevel descriptor for the whole probe. | |
974 | * Unlike C, C++ does not allow tentative definitions. Therefore, we | |
975 | * need to explicitly declare the variable with "extern", using hidden | |
976 | * visibility to keep this symbol from being exported to the global | |
977 | * symbol table. | |
978 | */ | |
979 | ||
980 | extern struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) | |
981 | __attribute__((visibility("hidden"))); | |
982 | ||
df854e41 | 983 | /* |
882a56d7 | 984 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
985 | * |
986 | * Create events description structures. We use a weakref because | |
987 | * loglevels are optional. If not declared, the event will point to the | |
988 | * a loglevel that contains NULL. | |
989 | */ | |
990 | ||
991 | /* Reset all macros within TRACEPOINT_EVENT */ | |
992 | #include <lttng/ust-tracepoint-event-reset.h> | |
993 | ||
f8021d08 CB |
994 | #undef _TRACEPOINT_EVENT_INSTANCE |
995 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
996 | static const int * \ |
997 | __ref_loglevel___##_provider##___##_name \ | |
998 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
999 | static const char * \ |
1000 | __ref_model_emf_uri___##_provider##___##_name \ | |
1001 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
a084756d | 1002 | static struct lttng_ust_event_desc __event_desc___##_provider##_##_name = { \ |
dc11f93f | 1003 | .struct_size = sizeof(struct lttng_ust_event_desc), \ |
5b4c6da4 MD |
1004 | .event_name = #_name, \ |
1005 | .probe_desc = &__probe_desc___##_provider, \ | |
dc11f93f | 1006 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template, \ |
46d52200 ZT |
1007 | .ctx = NULL, \ |
1008 | .fields = __event_fields___##_provider##___##_template, \ | |
1c80c909 | 1009 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template) - 1, \ |
882a56d7 | 1010 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 1011 | .signature = __tp_event_signature___##_provider##___##_template, \ |
dc11f93f | 1012 | .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \ |
df854e41 MD |
1013 | }; |
1014 | ||
1015 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 1016 | |
df854e41 | 1017 | /* |
882a56d7 | 1018 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
1019 | * |
1020 | * Create array of events. | |
1021 | */ | |
1022 | ||
1023 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1024 | #include <lttng/ust-tracepoint-event-reset.h> | |
1025 | ||
f8021d08 CB |
1026 | #undef _TRACEPOINT_EVENT_INSTANCE |
1027 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
df854e41 MD |
1028 | &__event_desc___##_provider##_##_name, |
1029 | ||
a084756d | 1030 | static struct lttng_ust_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { |
05ceaafd | 1031 | #include TRACEPOINT_INCLUDE |
1c80c909 | 1032 | NULL, /* Dummy, C99 forbids 0-len array. */ |
05ceaafd MD |
1033 | }; |
1034 | ||
df854e41 | 1035 | |
05ceaafd | 1036 | /* |
882a56d7 | 1037 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
1038 | * |
1039 | * Create a toplevel descriptor for the whole probe. | |
1040 | */ | |
1041 | ||
5b4c6da4 | 1042 | struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { |
dc11f93f | 1043 | .struct_size = sizeof(struct lttng_ust_probe_desc), |
5b4c6da4 | 1044 | .provider_name = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd | 1045 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
1c80c909 | 1046 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)) - 1, |
46d52200 ZT |
1047 | .head = { NULL, NULL }, |
1048 | .lazy_init_head = { NULL, NULL }, | |
1049 | .lazy = 0, | |
71d31690 MD |
1050 | .major = LTTNG_UST_PROVIDER_MAJOR, |
1051 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
1052 | }; |
1053 | ||
f0cc794d MD |
1054 | static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER); |
1055 | ||
05ceaafd | 1056 | /* |
882a56d7 | 1057 | * Stage 9 of tracepoint event generation. |
05ceaafd | 1058 | * |
1c324e59 | 1059 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
1060 | * |
1061 | * Generate the constructor as an externally visible symbol for use when | |
1062 | * linking the probe statically. | |
f0cc794d MD |
1063 | * |
1064 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
1065 | */ |
1066 | ||
1067 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1068 | #include <lttng/ust-tracepoint-event-reset.h> | |
465a0d04 MJ |
1069 | static void |
1070 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) | |
1071 | lttng_ust_notrace __attribute__((constructor)); | |
a8909ba5 | 1072 | static void |
1c324e59 MD |
1073 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) |
1074 | { | |
1075 | int ret; | |
1076 | ||
f0cc794d MD |
1077 | if (_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1078 | TRACEPOINT_PROVIDER)++) { | |
1079 | return; | |
1080 | } | |
e8bd1da7 MD |
1081 | /* |
1082 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
1083 | * static inline function that ensures every probe PROVIDER | |
1084 | * argument match the provider within which they appear. It | |
1085 | * calls empty static inline functions, and therefore has no | |
1086 | * runtime effect. However, if it detects an error, a linker | |
1087 | * error will appear. | |
1088 | */ | |
1089 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
dc11f93f | 1090 | ret = lttng_ust_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
7d381d6e | 1091 | if (ret) { |
0fdd0b89 | 1092 | fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe.\n", ret); |
7d381d6e MD |
1093 | abort(); |
1094 | } | |
1c324e59 MD |
1095 | } |
1096 | ||
c589eca2 MJ |
1097 | static void |
1098 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) | |
1099 | lttng_ust_notrace __attribute__((destructor)); | |
a8909ba5 | 1100 | static void |
1c324e59 MD |
1101 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) |
1102 | { | |
f0cc794d MD |
1103 | if (--_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1104 | TRACEPOINT_PROVIDER)) { | |
1105 | return; | |
1106 | } | |
dc11f93f | 1107 | lttng_ust_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 | 1108 | } |
628e1d81 | 1109 | |
6c8cfec7 | 1110 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER) |
1d18d519 | 1111 | __attribute__((visibility("default"))); |