Commit | Line | Data |
---|---|---|
1c324e59 | 1 | /* |
c0c0989a | 2 | * SPDX-License-Identifier: MIT |
1c324e59 | 3 | * |
c0c0989a | 4 | * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
1c324e59 MD |
5 | */ |
6 | ||
fb31eb73 | 7 | #include <stdint.h> |
1c324e59 | 8 | #include <stdio.h> |
7d381d6e | 9 | #include <stdlib.h> |
1c324e59 | 10 | #include <urcu/compiler.h> |
f488575f | 11 | #include <urcu/rculist.h> |
1c324e59 | 12 | #include <lttng/ust-events.h> |
0b4b8811 | 13 | #include <lttng/ust-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) \ | |
81b16412 | 112 | lttng_ust_tracepoint_validate_name_len(_provider, _name); |
f56cd1d5 MD |
113 | |
114 | #include TRACEPOINT_INCLUDE | |
115 | ||
c75c0422 MD |
116 | /* |
117 | * Stage 0.2 of tracepoint event generation. | |
118 | * | |
119 | * Create dummy trace prototypes for each event class, and for each used | |
120 | * template. This will allow checking whether the prototypes from the | |
121 | * class and the instance using the class actually match. | |
122 | */ | |
123 | ||
124 | /* Reset all macros within TRACEPOINT_EVENT */ | |
125 | #include <lttng/ust-tracepoint-event-reset.h> | |
126 | ||
cadfcbfc MJ |
127 | #undef LTTNG_UST_TP_ARGS |
128 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
c75c0422 | 129 | |
f8021d08 CB |
130 | #undef _TRACEPOINT_EVENT_INSTANCE |
131 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
c75c0422 MD |
132 | void __event_template_proto___##_provider##___##_template(_TP_ARGS_DATA_PROTO(_args)); |
133 | ||
f8021d08 CB |
134 | #undef _TRACEPOINT_EVENT_CLASS |
135 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
c75c0422 MD |
136 | void __event_template_proto___##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); |
137 | ||
138 | #include TRACEPOINT_INCLUDE | |
139 | ||
c785c634 MD |
140 | /* |
141 | * Stage 0.9 of tracepoint event generation | |
142 | * | |
143 | * Unfolding the enums | |
144 | */ | |
145 | #include <lttng/ust-tracepoint-event-reset.h> | |
146 | ||
147 | /* Enumeration entry (single value) */ | |
148 | #undef ctf_enum_value | |
149 | #define ctf_enum_value(_string, _value) \ | |
5defa774 | 150 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_enum_entry, { \ |
891d6b55 | 151 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ |
a6f80644 | 152 | .start = { \ |
eae3c729 | 153 | .value = lttng_ust_is_signed_type(__typeof__(_value)) ? \ |
a6f80644 | 154 | (long long) (_value) : (_value), \ |
eae3c729 | 155 | .signedness = lttng_ust_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
156 | }, \ |
157 | .end = { \ | |
eae3c729 | 158 | .value = lttng_ust_is_signed_type(__typeof__(_value)) ? \ |
a6f80644 | 159 | (long long) (_value) : (_value), \ |
eae3c729 | 160 | .signedness = lttng_ust_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
161 | }, \ |
162 | .string = (_string), \ | |
891d6b55 | 163 | }), |
c785c634 MD |
164 | |
165 | /* Enumeration entry (range) */ | |
166 | #undef ctf_enum_range | |
167 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
5defa774 | 168 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_enum_entry, { \ |
891d6b55 | 169 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ |
a6f80644 | 170 | .start = { \ |
eae3c729 | 171 | .value = lttng_ust_is_signed_type(__typeof__(_range_start)) ? \ |
a6f80644 | 172 | (long long) (_range_start) : (_range_start), \ |
eae3c729 | 173 | .signedness = lttng_ust_is_signed_type(__typeof__(_range_start)), \ |
a6f80644 MD |
174 | }, \ |
175 | .end = { \ | |
eae3c729 | 176 | .value = lttng_ust_is_signed_type(__typeof__(_range_end)) ? \ |
a6f80644 | 177 | (long long) (_range_end) : (_range_end), \ |
eae3c729 | 178 | .signedness = lttng_ust_is_signed_type(__typeof__(_range_end)), \ |
a6f80644 MD |
179 | }, \ |
180 | .string = (_string), \ | |
891d6b55 | 181 | }), |
c785c634 | 182 | |
3e762260 PP |
183 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
184 | #undef ctf_enum_auto | |
891d6b55 | 185 | #define ctf_enum_auto(_string) \ |
5defa774 | 186 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_enum_entry, { \ |
891d6b55 | 187 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ |
3e762260 PP |
188 | .start = { \ |
189 | .value = -1ULL, \ | |
190 | .signedness = 0, \ | |
191 | }, \ | |
192 | .end = { \ | |
193 | .value = -1ULL, \ | |
194 | .signedness = 0, \ | |
195 | }, \ | |
196 | .string = (_string), \ | |
1a37a873 | 197 | .options = LTTNG_UST_ENUM_ENTRY_OPTION_IS_AUTO, \ |
891d6b55 | 198 | }), |
3e762260 | 199 | |
c785c634 MD |
200 | #undef TP_ENUM_VALUES |
201 | #define TP_ENUM_VALUES(...) \ | |
202 | __VA_ARGS__ | |
203 | ||
204 | #undef TRACEPOINT_ENUM | |
205 | #define TRACEPOINT_ENUM(_provider, _name, _values) \ | |
3d33ca1d | 206 | const struct lttng_ust_enum_entry * const __enum_values__##_provider##_##_name[] = { \ |
c785c634 | 207 | _values \ |
1c80c909 | 208 | ctf_enum_value("", 0) /* Dummy, 0-len array forbidden by C99. */ \ |
c785c634 | 209 | }; |
2df82195 FD |
210 | #include TRACEPOINT_INCLUDE |
211 | ||
212 | /* | |
213 | * Stage 0.9.1 | |
214 | * Verifying array and sequence elements are of an integer type. | |
215 | */ | |
216 | ||
217 | /* Reset all macros within TRACEPOINT_EVENT */ | |
218 | #include <lttng/ust-tracepoint-event-reset.h> | |
219 | #include <lttng/ust-tracepoint-event-write.h> | |
220 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
221 | ||
222 | #undef _ctf_array_encoded | |
223 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ | |
224 | _length, _encoding, _nowrite, \ | |
225 | _elem_type_base) \ | |
b4c54822 | 226 | lttng_ust_ctf_array_element_type_is_supported(_type, _item); |
2df82195 FD |
227 | |
228 | #undef _ctf_sequence_encoded | |
229 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ | |
230 | _length_type, _src_length, _encoding, _nowrite, \ | |
231 | _elem_type_base) \ | |
b4c54822 | 232 | lttng_ust_ctf_array_element_type_is_supported(_type, _item); |
2df82195 FD |
233 | |
234 | #undef TP_FIELDS | |
235 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
236 | ||
f8021d08 CB |
237 | #undef _TRACEPOINT_EVENT_CLASS |
238 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
2df82195 | 239 | _fields |
c785c634 MD |
240 | |
241 | #include TRACEPOINT_INCLUDE | |
242 | ||
1c324e59 MD |
243 | /* |
244 | * Stage 1 of tracepoint event generation. | |
245 | * | |
246 | * Create event field type metadata section. | |
247 | * Each event produce an array of fields. | |
248 | */ | |
249 | ||
250 | /* Reset all macros within TRACEPOINT_EVENT */ | |
251 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
252 | #include <lttng/ust-tracepoint-event-write.h> |
253 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 254 | |
4774c8f3 | 255 | #undef _ctf_integer_ext |
25cff019 | 256 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
5defa774 | 257 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \ |
25cff019 MD |
258 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
259 | .name = #_item, \ | |
a084756d | 260 | .type = lttng_ust_type_integer_define(_type, _byte_order, _base), \ |
25cff019 MD |
261 | .nowrite = _nowrite, \ |
262 | .nofilter = 0, \ | |
263 | }), | |
1c324e59 | 264 | |
4774c8f3 | 265 | #undef _ctf_float |
180901e6 | 266 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
5defa774 | 267 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \ |
25cff019 MD |
268 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
269 | .name = #_item, \ | |
a084756d | 270 | .type = lttng_ust_type_float_define(_type), \ |
25cff019 MD |
271 | .nowrite = _nowrite, \ |
272 | .nofilter = 0, \ | |
273 | }), | |
1c324e59 | 274 | |
4774c8f3 | 275 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
276 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, \ |
277 | _length, _encoding, _nowrite, \ | |
278 | _elem_type_base) \ | |
5defa774 | 279 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \ |
25cff019 MD |
280 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
281 | .name = #_item, \ | |
5defa774 | 282 | .type = (const struct lttng_ust_type_common *) LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_type_array, { \ |
a084756d MD |
283 | .parent = { \ |
284 | .type = lttng_ust_type_array, \ | |
285 | }, \ | |
286 | .struct_size = sizeof(struct lttng_ust_type_array), \ | |
287 | .elem_type = lttng_ust_type_integer_define(_type, _byte_order, _elem_type_base), \ | |
288 | .length = _length, \ | |
289 | .alignment = 0, \ | |
290 | .encoding = lttng_ust_string_encoding_##_encoding, \ | |
291 | }), \ | |
25cff019 MD |
292 | .nowrite = _nowrite, \ |
293 | .nofilter = 0, \ | |
294 | }), | |
1c324e59 | 295 | |
4774c8f3 | 296 | #undef _ctf_sequence_encoded |
48d660d1 | 297 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \ |
f968510a PP |
298 | _length_type, _src_length, _encoding, _nowrite, \ |
299 | _elem_type_base) \ | |
5defa774 | 300 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \ |
25cff019 MD |
301 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
302 | .name = "_" #_item "_length", \ | |
a084756d | 303 | .type = lttng_ust_type_integer_define(_length_type, BYTE_ORDER, 10), \ |
25cff019 MD |
304 | .nowrite = _nowrite, \ |
305 | .nofilter = 1, \ | |
306 | }), \ | |
5defa774 | 307 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \ |
25cff019 MD |
308 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
309 | .name = #_item, \ | |
5defa774 | 310 | .type = (const struct lttng_ust_type_common *) LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_type_sequence, { \ |
a084756d MD |
311 | .parent = { \ |
312 | .type = lttng_ust_type_sequence, \ | |
1c324e59 | 313 | }, \ |
a084756d MD |
314 | .struct_size = sizeof(struct lttng_ust_type_sequence), \ |
315 | .length_name = "_" #_item "_length", \ | |
316 | .elem_type = lttng_ust_type_integer_define(_type, _byte_order, _elem_type_base), \ | |
317 | .alignment = 0, \ | |
318 | .encoding = lttng_ust_string_encoding_##_encoding, \ | |
319 | }), \ | |
25cff019 MD |
320 | .nowrite = _nowrite, \ |
321 | .nofilter = 0, \ | |
322 | }), | |
1c324e59 | 323 | |
4774c8f3 | 324 | #undef _ctf_string |
180901e6 | 325 | #define _ctf_string(_item, _src, _nowrite) \ |
5defa774 | 326 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \ |
25cff019 MD |
327 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
328 | .name = #_item, \ | |
5defa774 | 329 | .type = (const struct lttng_ust_type_common *) LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_type_string, { \ |
a084756d MD |
330 | .parent = { \ |
331 | .type = lttng_ust_type_string, \ | |
46d52200 | 332 | }, \ |
a084756d MD |
333 | .struct_size = sizeof(struct lttng_ust_type_string), \ |
334 | .encoding = lttng_ust_string_encoding_UTF8, \ | |
335 | }), \ | |
25cff019 MD |
336 | .nowrite = _nowrite, \ |
337 | .nofilter = 0, \ | |
338 | }), | |
1c324e59 | 339 | |
5152f6df MJ |
340 | #undef _ctf_unused |
341 | #define _ctf_unused(_src) | |
342 | ||
c785c634 MD |
343 | #undef _ctf_enum |
344 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
5defa774 | 345 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \ |
25cff019 | 346 | .struct_size = sizeof(struct lttng_ust_event_field), \ |
c785c634 | 347 | .name = #_item, \ |
5defa774 | 348 | .type = (const struct lttng_ust_type_common *) LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_type_enum, { \ |
a084756d MD |
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) \ | |
3d33ca1d | 365 | static const struct lttng_ust_event_field * const __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) \ | |
4e48b5d2 | 372 | static const struct lttng_ust_enum_desc __enum_##_provider##_##_name = { \ |
a084756d | 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 | ||
cadfcbfc MJ |
390 | #undef LTTNG_UST_TP_ARGS |
391 | #define LTTNG_UST_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) \ |
5152f6df MJ |
411 | if (0) \ |
412 | (void) (_src); /* Unused */ \ | |
b5457df5 | 413 | __event_len += lttng_ust_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \ |
1c324e59 MD |
414 | __event_len += sizeof(_type); |
415 | ||
4774c8f3 | 416 | #undef _ctf_float |
180901e6 | 417 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
5152f6df MJ |
418 | if (0) \ |
419 | (void) (_src); /* Unused */ \ | |
b5457df5 | 420 | __event_len += lttng_ust_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \ |
1c324e59 MD |
421 | __event_len += sizeof(_type); |
422 | ||
4774c8f3 | 423 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
424 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, _encoding, \ |
425 | _nowrite, _elem_type_base) \ | |
5152f6df MJ |
426 | if (0) \ |
427 | (void) (_src); /* Unused */ \ | |
b5457df5 | 428 | __event_len += lttng_ust_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \ |
1c324e59 MD |
429 | __event_len += sizeof(_type) * (_length); |
430 | ||
4774c8f3 | 431 | #undef _ctf_sequence_encoded |
48d660d1 | 432 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 433 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
5152f6df MJ |
434 | if (0) \ |
435 | (void) (_src); /* Unused */ \ | |
b5457df5 | 436 | __event_len += lttng_ust_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_length_type)); \ |
1c324e59 | 437 | __event_len += sizeof(_length_type); \ |
b5457df5 | 438 | __event_len += lttng_ust_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \ |
1c324e59 MD |
439 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ |
440 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
441 | __dynamic_len_idx++; | |
442 | ||
4774c8f3 | 443 | #undef _ctf_string |
180901e6 | 444 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
445 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
446 | strlen((_src) ? (_src) : __LTTNG_UST_NULL_STRING) + 1; | |
1c324e59 | 447 | |
5152f6df MJ |
448 | #undef _ctf_unused |
449 | #define _ctf_unused(_src) \ | |
450 | if (0) \ | |
451 | (void) (_src); /* Unused */ | |
452 | ||
c785c634 MD |
453 | #undef _ctf_enum |
454 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
455 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
456 | ||
cadfcbfc MJ |
457 | #undef LTTNG_UST_TP_ARGS |
458 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
1c324e59 MD |
459 | |
460 | #undef TP_FIELDS | |
2eda209b | 461 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 462 | |
f8021d08 CB |
463 | #undef _TRACEPOINT_EVENT_CLASS |
464 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
106ff4da MJ |
465 | static inline \ |
466 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
467 | lttng_ust_notrace; \ | |
a8909ba5 | 468 | static inline \ |
5152f6df MJ |
469 | size_t __event_get_size__##_provider##___##_name( \ |
470 | size_t *__dynamic_len __attribute__((__unused__)), \ | |
471 | _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
472 | { \ |
473 | size_t __event_len = 0; \ | |
5152f6df | 474 | unsigned int __dynamic_len_idx __attribute__((__unused__)) = 0; \ |
1c324e59 MD |
475 | \ |
476 | if (0) \ | |
5152f6df MJ |
477 | (void) __tp_data; /* don't warn if unused */ \ |
478 | \ | |
1c324e59 MD |
479 | _fields \ |
480 | return __event_len; \ | |
481 | } | |
482 | ||
483 | #include TRACEPOINT_INCLUDE | |
484 | ||
1ddfd641 MD |
485 | /* |
486 | * Stage 3.1 of tracepoint event generation. | |
487 | * | |
488 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 489 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
490 | */ |
491 | ||
492 | /* Reset all macros within TRACEPOINT_EVENT */ | |
493 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
494 | #include <lttng/ust-tracepoint-event-write.h> |
495 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 496 | |
4774c8f3 | 497 | #undef _ctf_integer_ext |
180901e6 | 498 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
eae3c729 | 499 | if (lttng_ust_is_signed_type(_type)) { \ |
3ebeea0d MD |
500 | int64_t __ctf_tmp_int64; \ |
501 | switch (sizeof(_type)) { \ | |
502 | case 1: \ | |
503 | { \ | |
504 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
505 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
506 | break; \ | |
507 | } \ | |
508 | case 2: \ | |
509 | { \ | |
510 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
511 | if (_byte_order != BYTE_ORDER) \ |
512 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
513 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
514 | break; \ | |
515 | } \ | |
516 | case 4: \ | |
517 | { \ | |
518 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
519 | if (_byte_order != BYTE_ORDER) \ |
520 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
521 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
522 | break; \ | |
523 | } \ | |
524 | case 8: \ | |
525 | { \ | |
526 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
527 | if (_byte_order != BYTE_ORDER) \ |
528 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
529 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
530 | break; \ | |
531 | } \ | |
532 | default: \ | |
533 | abort(); \ | |
534 | }; \ | |
fa099471 MD |
535 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ |
536 | } else { \ | |
3ebeea0d MD |
537 | uint64_t __ctf_tmp_uint64; \ |
538 | switch (sizeof(_type)) { \ | |
539 | case 1: \ | |
540 | { \ | |
541 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
542 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
543 | break; \ | |
544 | } \ | |
545 | case 2: \ | |
546 | { \ | |
547 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
548 | if (_byte_order != BYTE_ORDER) \ |
549 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
550 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
551 | break; \ | |
552 | } \ | |
553 | case 4: \ | |
554 | { \ | |
555 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
556 | if (_byte_order != BYTE_ORDER) \ |
557 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
558 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
559 | break; \ | |
560 | } \ | |
561 | case 8: \ | |
562 | { \ | |
563 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
39ad74cf MD |
564 | if (_byte_order != BYTE_ORDER) \ |
565 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
566 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
567 | break; \ | |
568 | } \ | |
569 | default: \ | |
570 | abort(); \ | |
571 | }; \ | |
fa099471 MD |
572 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ |
573 | } \ | |
1ddfd641 MD |
574 | __stack_data += sizeof(int64_t); |
575 | ||
4774c8f3 | 576 | #undef _ctf_float |
180901e6 | 577 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
578 | { \ |
579 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
580 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
581 | __stack_data += sizeof(double); \ | |
582 | } | |
1ddfd641 | 583 | |
4774c8f3 | 584 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
585 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
586 | _encoding, _nowrite, _elem_type_base) \ | |
fa099471 MD |
587 | { \ |
588 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 589 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
590 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
591 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
592 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
593 | __stack_data += sizeof(void *); \ | |
fa099471 | 594 | } |
1ddfd641 | 595 | |
4774c8f3 | 596 | #undef _ctf_sequence_encoded |
48d660d1 | 597 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 598 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
fa099471 MD |
599 | { \ |
600 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 601 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
602 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
603 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
604 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
605 | __stack_data += sizeof(void *); \ | |
fa099471 | 606 | } |
1ddfd641 | 607 | |
4774c8f3 | 608 | #undef _ctf_string |
180901e6 | 609 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 610 | { \ |
24a39530 PP |
611 | const void *__ctf_tmp_ptr = \ |
612 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
b1239ad6 MD |
613 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
614 | __stack_data += sizeof(void *); \ | |
fa099471 | 615 | } |
1ddfd641 | 616 | |
5152f6df MJ |
617 | #undef _ctf_unused |
618 | #define _ctf_unused(_src) \ | |
619 | if (0) \ | |
620 | (void) (_src); | |
621 | ||
c785c634 MD |
622 | #undef _ctf_enum |
623 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
624 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
625 | ||
cadfcbfc MJ |
626 | #undef LTTNG_UST_TP_ARGS |
627 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
1ddfd641 MD |
628 | |
629 | #undef TP_FIELDS | |
630 | #define TP_FIELDS(...) __VA_ARGS__ | |
631 | ||
f8021d08 CB |
632 | #undef _TRACEPOINT_EVENT_CLASS |
633 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
1ddfd641 | 634 | static inline \ |
d37ecb3f | 635 | void __event_prepare_interpreter_stack__##_provider##___##_name(char *__stack_data,\ |
1ddfd641 MD |
636 | _TP_ARGS_DATA_PROTO(_args)) \ |
637 | { \ | |
5152f6df MJ |
638 | if (0) { \ |
639 | (void) __tp_data; /* don't warn if unused */ \ | |
640 | (void) __stack_data; /* don't warn if unused */ \ | |
641 | } \ | |
642 | \ | |
1ddfd641 MD |
643 | _fields \ |
644 | } | |
645 | ||
646 | #include TRACEPOINT_INCLUDE | |
647 | ||
1c324e59 | 648 | /* |
df854e41 | 649 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
650 | * |
651 | * Create static inline function that calculates event payload alignment. | |
652 | */ | |
653 | ||
654 | /* Reset all macros within TRACEPOINT_EVENT */ | |
655 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 656 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 657 | |
4774c8f3 | 658 | #undef _ctf_integer_ext |
180901e6 | 659 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
5152f6df MJ |
660 | if (0) \ |
661 | (void) (_src); /* Unused */ \ | |
dc325c1d | 662 | __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type)); |
1c324e59 | 663 | |
4774c8f3 | 664 | #undef _ctf_float |
180901e6 | 665 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
5152f6df MJ |
666 | if (0) \ |
667 | (void) (_src); /* Unused */ \ | |
dc325c1d | 668 | __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type)); |
1c324e59 | 669 | |
4774c8f3 | 670 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
671 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
672 | _encoding, _nowrite, _elem_type_base) \ | |
5152f6df MJ |
673 | if (0) \ |
674 | (void) (_src); /* Unused */ \ | |
dc325c1d | 675 | __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type)); |
1c324e59 | 676 | |
4774c8f3 | 677 | #undef _ctf_sequence_encoded |
48d660d1 | 678 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 679 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
5152f6df MJ |
680 | if (0) \ |
681 | (void) (_src); /* Unused */ \ | |
682 | if (0) \ | |
683 | (void) (_src_length); /* Unused */ \ | |
dc325c1d MJ |
684 | __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_length_type)); \ |
685 | __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type)); | |
1c324e59 | 686 | |
4774c8f3 | 687 | #undef _ctf_string |
5152f6df MJ |
688 | #define _ctf_string(_item, _src, _nowrite) \ |
689 | if (0) \ | |
690 | (void) (_src); /* Unused */ | |
691 | ||
692 | #undef _ctf_unused | |
693 | #define _ctf_unused(_src) \ | |
694 | if (0) \ | |
695 | (void) (_src); /* Unused */ | |
1c324e59 | 696 | |
c785c634 MD |
697 | #undef _ctf_enum |
698 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
699 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
700 | ||
cadfcbfc MJ |
701 | #undef LTTNG_UST_TP_ARGS |
702 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
1c324e59 MD |
703 | |
704 | #undef TP_FIELDS | |
2eda209b | 705 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 706 | |
f8021d08 CB |
707 | #undef _TRACEPOINT_EVENT_CLASS |
708 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
106ff4da MJ |
709 | static inline \ |
710 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
711 | lttng_ust_notrace; \ | |
1c324e59 MD |
712 | static inline \ |
713 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
714 | { \ | |
715 | size_t __event_align = 1; \ | |
716 | _fields \ | |
717 | return __event_align; \ | |
718 | } | |
719 | ||
720 | #include TRACEPOINT_INCLUDE | |
721 | ||
722 | ||
723 | /* | |
df854e41 | 724 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
725 | * |
726 | * Create the probe function. This function calls event size calculation | |
727 | * and writes event data into the buffer. | |
728 | */ | |
729 | ||
730 | /* Reset all macros within TRACEPOINT_EVENT */ | |
731 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 732 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 733 | |
4774c8f3 | 734 | #undef _ctf_integer_ext |
180901e6 | 735 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
736 | { \ |
737 | _type __tmp = (_src); \ | |
8936b6c0 | 738 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp), lttng_ust_rb_alignof(__tmp));\ |
1c324e59 MD |
739 | } |
740 | ||
4774c8f3 | 741 | #undef _ctf_float |
180901e6 | 742 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
743 | { \ |
744 | _type __tmp = (_src); \ | |
8936b6c0 | 745 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp), lttng_ust_rb_alignof(__tmp));\ |
1c324e59 MD |
746 | } |
747 | ||
4774c8f3 | 748 | #undef _ctf_array_encoded |
f3ec4cb5 MD |
749 | #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, \ |
750 | _encoding, _nowrite, _elem_type_base) \ | |
27927814 | 751 | if (lttng_ust_string_encoding_##_encoding == lttng_ust_string_encoding_none) \ |
8936b6c0 | 752 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length), lttng_ust_rb_alignof(_type)); \ |
27927814 | 753 | else \ |
879f9b0a | 754 | __chan->ops->event_pstrcpy_pad(&__ctx, (const char *) (_src), _length); \ |
1c324e59 | 755 | |
4774c8f3 | 756 | #undef _ctf_sequence_encoded |
48d660d1 | 757 | #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \ |
f968510a | 758 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 | 759 | { \ |
d71b57b9 | 760 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
8936b6c0 | 761 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type), lttng_ust_rb_alignof(_length_type));\ |
1c324e59 | 762 | } \ |
27927814 MD |
763 | if (lttng_ust_string_encoding_##_encoding == lttng_ust_string_encoding_none) \ |
764 | __chan->ops->event_write(&__ctx, _src, \ | |
8936b6c0 | 765 | sizeof(_type) * __get_dynamic_len(dest), lttng_ust_rb_alignof(_type)); \ |
27927814 | 766 | else \ |
879f9b0a | 767 | __chan->ops->event_pstrcpy_pad(&__ctx, (const char *) (_src), __get_dynamic_len(dest)); \ |
1c324e59 | 768 | |
4774c8f3 | 769 | #undef _ctf_string |
8936b6c0 | 770 | #define _ctf_string(_item, _src, _nowrite) \ |
24a39530 PP |
771 | { \ |
772 | const char *__ctf_tmp_string = \ | |
773 | ((_src) ? (_src) : __LTTNG_UST_NULL_STRING); \ | |
f9ec4a97 MD |
774 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ |
775 | __get_dynamic_len(dest)); \ | |
24a39530 PP |
776 | } |
777 | ||
5152f6df MJ |
778 | #undef _ctf_unused |
779 | #define _ctf_unused(_src) | |
1c324e59 | 780 | |
c785c634 MD |
781 | #undef _ctf_enum |
782 | #define _ctf_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
783 | _ctf_integer_ext(_type, _item, _src, BYTE_ORDER, 10, _nowrite) | |
784 | ||
1c324e59 MD |
785 | /* Beware: this get len actually consumes the len value */ |
786 | #undef __get_dynamic_len | |
d71b57b9 | 787 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 | 788 | |
cadfcbfc MJ |
789 | #undef LTTNG_UST_TP_ARGS |
790 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
1c324e59 MD |
791 | |
792 | #undef TP_FIELDS | |
2eda209b | 793 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 794 | |
95c25348 PW |
795 | /* |
796 | * For state dump, check that "session" argument (mandatory) matches the | |
797 | * session this event belongs to. Ensures that we write state dump data only | |
798 | * into the started session, not into all sessions. | |
799 | */ | |
800 | #undef _TP_SESSION_CHECK | |
801 | #ifdef TP_SESSION_CHECK | |
802 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
803 | #else /* TP_SESSION_CHECK */ | |
804 | #define _TP_SESSION_CHECK(session, csession) 1 | |
805 | #endif /* TP_SESSION_CHECK */ | |
806 | ||
97904b41 MD |
807 | /* |
808 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
809 | * corruption on 32-bit PowerPC. Disable this feature on that | |
810 | * architecture for now by always using the NULL value for the ip | |
811 | * context. | |
812 | */ | |
5dadb547 MD |
813 | #undef _TP_IP_PARAM |
814 | #ifdef TP_IP_PARAM | |
e1d09f9e | 815 | #define _TP_IP_PARAM(x) (x) |
5dadb547 | 816 | #else /* TP_IP_PARAM */ |
97904b41 | 817 | |
2eba8e39 | 818 | #if defined(LTTNG_UST_ARCH_PPC) && !defined(LTTNG_UST_ARCH_PPC64) |
97904b41 | 819 | #define _TP_IP_PARAM(x) NULL |
2eba8e39 | 820 | #else |
e1d09f9e | 821 | #define _TP_IP_PARAM(x) __builtin_return_address(0) |
2eba8e39 | 822 | #endif |
97904b41 | 823 | |
5dadb547 MD |
824 | #endif /* TP_IP_PARAM */ |
825 | ||
1ddfd641 MD |
826 | /* |
827 | * Using twice size for filter stack data to hold size and pointer for | |
828 | * each field (worse case). For integers, max size required is 64-bit. | |
829 | * Same for double-precision floats. Those fit within | |
830 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 831 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 832 | */ |
f8021d08 CB |
833 | #undef _TRACEPOINT_EVENT_CLASS |
834 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
106ff4da MJ |
835 | static \ |
836 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
837 | lttng_ust_notrace; \ | |
a8909ba5 PW |
838 | static \ |
839 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 840 | { \ |
ba99fbe2 | 841 | struct lttng_ust_event_common *__event = (struct lttng_ust_event_common *) __tp_data; \ |
1c324e59 | 842 | size_t __dynamic_len_idx = 0; \ |
75026e9f | 843 | const size_t __num_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1; \ |
d71b57b9 | 844 | union { \ |
75026e9f | 845 | size_t __dynamic_len[__num_fields]; \ |
ba99fbe2 | 846 | char __interpreter_stack_data[2 * sizeof(unsigned long) * __num_fields]; \ |
d71b57b9 | 847 | } __stackvar; \ |
1c324e59 | 848 | int __ret; \ |
a2e4d05e | 849 | bool __interpreter_stack_prepared = false; \ |
1c324e59 MD |
850 | \ |
851 | if (0) \ | |
852 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
ba99fbe2 MD |
853 | switch (__event->type) { \ |
854 | case LTTNG_UST_EVENT_TYPE_RECORDER: \ | |
855 | { \ | |
856 | struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \ | |
e7bc0ef6 MD |
857 | struct lttng_ust_channel_buffer *__chan = __event_recorder->chan; \ |
858 | struct lttng_ust_channel_common *__chan_common = __chan->parent; \ | |
ba99fbe2 | 859 | \ |
e7bc0ef6 | 860 | if (!_TP_SESSION_CHECK(session, __chan_common->session)) \ |
ba99fbe2 | 861 | return; \ |
e7bc0ef6 | 862 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan_common->session->active))) \ |
ba99fbe2 | 863 | return; \ |
e7bc0ef6 | 864 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan_common->enabled))) \ |
ba99fbe2 MD |
865 | return; \ |
866 | break; \ | |
867 | } \ | |
868 | case LTTNG_UST_EVENT_TYPE_NOTIFIER: \ | |
869 | break; \ | |
870 | } \ | |
871 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
1c324e59 | 872 | return; \ |
1b436e01 MD |
873 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
874 | return; \ | |
a2e4d05e | 875 | if (caa_unlikely(CMM_ACCESS_ONCE(__event->eval_filter))) { \ |
ba99fbe2 | 876 | __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ |
f488575f | 877 | _TP_ARGS_DATA_VAR(_args)); \ |
a2e4d05e MD |
878 | __interpreter_stack_prepared = true; \ |
879 | if (caa_likely(__event->run_filter(__event, \ | |
880 | __stackvar.__interpreter_stack_data, NULL) != LTTNG_UST_EVENT_FILTER_ACCEPT)) \ | |
61ce3223 | 881 | return; \ |
1ddfd641 | 882 | } \ |
ba99fbe2 MD |
883 | switch (__event->type) { \ |
884 | case LTTNG_UST_EVENT_TYPE_RECORDER: \ | |
885 | { \ | |
886 | size_t __event_len, __event_align; \ | |
887 | struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \ | |
e7bc0ef6 | 888 | struct lttng_ust_channel_buffer *__chan = __event_recorder->chan; \ |
b5457df5 | 889 | struct lttng_ust_ring_buffer_ctx __ctx; \ |
ba99fbe2 MD |
890 | \ |
891 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
892 | _TP_ARGS_DATA_VAR(_args)); \ | |
893 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
b5457df5 | 894 | lttng_ust_ring_buffer_ctx_init(&__ctx, __event_recorder, __event_len, __event_align, \ |
8936b6c0 MD |
895 | _TP_IP_PARAM(TP_IP_PARAM)); \ |
896 | __ret = __chan->ops->event_reserve(&__ctx); \ | |
ba99fbe2 MD |
897 | if (__ret < 0) \ |
898 | return; \ | |
899 | _fields \ | |
900 | __chan->ops->event_commit(&__ctx); \ | |
901 | break; \ | |
902 | } \ | |
903 | case LTTNG_UST_EVENT_TYPE_NOTIFIER: \ | |
904 | { \ | |
905 | struct lttng_ust_event_notifier *__event_notifier = (struct lttng_ust_event_notifier *) __event->child; \ | |
a2e4d05e MD |
906 | struct lttng_ust_notification_ctx __notif_ctx; \ |
907 | \ | |
908 | __notif_ctx.struct_size = sizeof(struct lttng_ust_notification_ctx); \ | |
909 | __notif_ctx.eval_capture = CMM_ACCESS_ONCE(__event_notifier->eval_capture); \ | |
ba99fbe2 | 910 | \ |
a2e4d05e | 911 | if (caa_unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ |
ba99fbe2 MD |
912 | __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ |
913 | _TP_ARGS_DATA_VAR(_args)); \ | |
914 | \ | |
915 | __event_notifier->notification_send(__event_notifier, \ | |
a2e4d05e MD |
916 | __stackvar.__interpreter_stack_data, \ |
917 | &__notif_ctx); \ | |
ba99fbe2 MD |
918 | break; \ |
919 | } \ | |
920 | } \ | |
1c324e59 MD |
921 | } |
922 | ||
923 | #include TRACEPOINT_INCLUDE | |
924 | ||
925 | #undef __get_dynamic_len | |
926 | ||
68755429 MD |
927 | /* |
928 | * Stage 5.1 of tracepoint event generation. | |
929 | * | |
930 | * Create probe signature | |
931 | */ | |
932 | ||
933 | /* Reset all macros within TRACEPOINT_EVENT */ | |
934 | #include <lttng/ust-tracepoint-event-reset.h> | |
935 | ||
cadfcbfc MJ |
936 | #undef LTTNG_UST_TP_ARGS |
937 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
9eb06182 MD |
938 | |
939 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 | 940 | |
f8021d08 CB |
941 | #undef _TRACEPOINT_EVENT_CLASS |
942 | #define _TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
ff82b7c1 | 943 | static const char __tp_event_signature___##_provider##___##_name[] = \ |
9eb06182 | 944 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
945 | |
946 | #include TRACEPOINT_INCLUDE | |
947 | ||
9eb06182 MD |
948 | #undef _TP_EXTRACT_STRING2 |
949 | ||
05ceaafd | 950 | /* |
882a56d7 | 951 | * Stage 6 of tracepoint event generation. |
1c324e59 | 952 | * |
df854e41 MD |
953 | * Tracepoint loglevel mapping definition generation. We generate a |
954 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
955 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
956 | * the compiler will complain. | |
05ceaafd MD |
957 | */ |
958 | ||
959 | /* Reset all macros within TRACEPOINT_EVENT */ | |
960 | #include <lttng/ust-tracepoint-event-reset.h> | |
961 | ||
4ea4f80e MD |
962 | /* |
963 | * Declare _loglevel___##__provider##___##__name as non-static, with | |
964 | * hidden visibility for c++ handling of weakref. We do a weakref to the | |
965 | * symbol in a later stage, which requires that the symbol is not | |
966 | * mangled. | |
967 | */ | |
968 | #ifdef __cplusplus | |
fc6d7bef | 969 | #define LTTNG_UST_TP_EXTERN_C extern "C" |
4ea4f80e | 970 | #else |
fc6d7bef | 971 | #define LTTNG_UST_TP_EXTERN_C |
4ea4f80e MD |
972 | #endif |
973 | ||
05ceaafd | 974 | #undef TRACEPOINT_LOGLEVEL |
3d33ca1d MD |
975 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
976 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
977 | LTTNG_UST_TP_EXTERN_C const int * const _loglevel___##__provider##___##__name \ | |
978 | __attribute__((visibility("hidden"))) = \ | |
457a6b58 | 979 | &_loglevel_value___##__provider##___##__name; |
df854e41 MD |
980 | |
981 | #include TRACEPOINT_INCLUDE | |
982 | ||
fc6d7bef | 983 | #undef LTTNG_UST_TP_EXTERN_C |
4ea4f80e | 984 | |
6ddc916d MD |
985 | /* |
986 | * Stage 6.1 of tracepoint event generation. | |
987 | * | |
988 | * Tracepoint UML URI info. | |
989 | */ | |
990 | ||
991 | /* Reset all macros within TRACEPOINT_EVENT */ | |
992 | #include <lttng/ust-tracepoint-event-reset.h> | |
993 | ||
4ea4f80e MD |
994 | /* |
995 | * Declare _model_emf_uri___##__provider##___##__name as non-static, | |
996 | * with hidden visibility for c++ handling of weakref. We do a weakref | |
997 | * to the symbol in a later stage, which requires that the symbol is not | |
998 | * mangled. | |
999 | */ | |
1000 | #ifdef __cplusplus | |
fc6d7bef | 1001 | #define LTTNG_UST_TP_EXTERN_C extern "C" |
4ea4f80e | 1002 | #else |
fc6d7bef | 1003 | #define LTTNG_UST_TP_EXTERN_C |
4ea4f80e MD |
1004 | #endif |
1005 | ||
6ddc916d MD |
1006 | #undef TRACEPOINT_MODEL_EMF_URI |
1007 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
3d33ca1d | 1008 | LTTNG_UST_TP_EXTERN_C const char * const _model_emf_uri___##__provider##___##__name \ |
082802f9 | 1009 | __attribute__((visibility("hidden"))) = __uri; \ |
6ddc916d MD |
1010 | |
1011 | #include TRACEPOINT_INCLUDE | |
1012 | ||
fc6d7bef | 1013 | #undef LTTNG_UST_TP_EXTERN_C |
4ea4f80e | 1014 | |
5b4c6da4 MD |
1015 | /* |
1016 | * Stage 7.0 of tracepoint event generation. | |
1017 | * | |
1018 | * Declare toplevel descriptor for the whole probe. | |
1019 | * Unlike C, C++ does not allow tentative definitions. Therefore, we | |
1020 | * need to explicitly declare the variable with "extern", using hidden | |
1021 | * visibility to keep this symbol from being exported to the global | |
1022 | * symbol table. | |
1023 | */ | |
1024 | ||
4e48b5d2 | 1025 | extern const struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) |
5b4c6da4 MD |
1026 | __attribute__((visibility("hidden"))); |
1027 | ||
df854e41 | 1028 | /* |
882a56d7 | 1029 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
1030 | * |
1031 | * Create events description structures. We use a weakref because | |
3d33ca1d | 1032 | * loglevels are optional. If not declared, the event will point to |
df854e41 | 1033 | * a loglevel that contains NULL. |
3d33ca1d MD |
1034 | * |
1035 | * C++ requires that const objects have a user-declared default | |
1036 | * constructor. However, in both C++ and C, weakref cannot be | |
1037 | * initialized because it causes the weakref attribute to be ignored. | |
1038 | * Therefore, the loglevel and model_emf_uri pointers are not const | |
1039 | * to ensure C++ compilers default-initialize them. | |
df854e41 MD |
1040 | */ |
1041 | ||
1042 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1043 | #include <lttng/ust-tracepoint-event-reset.h> | |
1044 | ||
f8021d08 CB |
1045 | #undef _TRACEPOINT_EVENT_INSTANCE |
1046 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
1047 | static const int * \ |
1048 | __ref_loglevel___##_provider##___##_name \ | |
1049 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
1050 | static const char * \ |
1051 | __ref_model_emf_uri___##_provider##___##_name \ | |
1052 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
4e48b5d2 | 1053 | static const struct lttng_ust_event_desc __event_desc___##_provider##_##_name = { \ |
dc11f93f | 1054 | .struct_size = sizeof(struct lttng_ust_event_desc), \ |
5b4c6da4 MD |
1055 | .event_name = #_name, \ |
1056 | .probe_desc = &__probe_desc___##_provider, \ | |
dc11f93f | 1057 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template, \ |
46d52200 | 1058 | .fields = __event_fields___##_provider##___##_template, \ |
1c80c909 | 1059 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template) - 1, \ |
882a56d7 | 1060 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 1061 | .signature = __tp_event_signature___##_provider##___##_template, \ |
dc11f93f | 1062 | .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \ |
df854e41 MD |
1063 | }; |
1064 | ||
1065 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 1066 | |
df854e41 | 1067 | /* |
882a56d7 | 1068 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
1069 | * |
1070 | * Create array of events. | |
1071 | */ | |
1072 | ||
1073 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1074 | #include <lttng/ust-tracepoint-event-reset.h> | |
1075 | ||
f8021d08 CB |
1076 | #undef _TRACEPOINT_EVENT_INSTANCE |
1077 | #define _TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
df854e41 MD |
1078 | &__event_desc___##_provider##_##_name, |
1079 | ||
3d33ca1d | 1080 | static const struct lttng_ust_event_desc * const _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { |
05ceaafd | 1081 | #include TRACEPOINT_INCLUDE |
1c80c909 | 1082 | NULL, /* Dummy, C99 forbids 0-len array. */ |
05ceaafd MD |
1083 | }; |
1084 | ||
df854e41 | 1085 | |
05ceaafd | 1086 | /* |
882a56d7 | 1087 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
1088 | * |
1089 | * Create a toplevel descriptor for the whole probe. | |
1090 | */ | |
1091 | ||
4e48b5d2 | 1092 | const struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { |
dc11f93f | 1093 | .struct_size = sizeof(struct lttng_ust_probe_desc), |
5b4c6da4 | 1094 | .provider_name = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd | 1095 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
1c80c909 | 1096 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)) - 1, |
71d31690 MD |
1097 | .major = LTTNG_UST_PROVIDER_MAJOR, |
1098 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
1099 | }; |
1100 | ||
f0cc794d | 1101 | static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER); |
4e48b5d2 | 1102 | static struct lttng_ust_registered_probe *_TP_COMBINE_TOKENS(__lttng_ust_probe_register_cookie___, TRACEPOINT_PROVIDER); |
f0cc794d | 1103 | |
05ceaafd | 1104 | /* |
882a56d7 | 1105 | * Stage 9 of tracepoint event generation. |
05ceaafd | 1106 | * |
1c324e59 | 1107 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
1108 | * |
1109 | * Generate the constructor as an externally visible symbol for use when | |
1110 | * linking the probe statically. | |
f0cc794d MD |
1111 | * |
1112 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
1113 | */ |
1114 | ||
1115 | /* Reset all macros within TRACEPOINT_EVENT */ | |
1116 | #include <lttng/ust-tracepoint-event-reset.h> | |
465a0d04 | 1117 | static void |
9c9c1ece | 1118 | _TP_COMBINE_TOKENS(__lttng_ust_events_init__, TRACEPOINT_PROVIDER)(void) |
465a0d04 | 1119 | lttng_ust_notrace __attribute__((constructor)); |
a8909ba5 | 1120 | static void |
9c9c1ece | 1121 | _TP_COMBINE_TOKENS(__lttng_ust_events_init__, TRACEPOINT_PROVIDER)(void) |
1c324e59 | 1122 | { |
4e48b5d2 | 1123 | struct lttng_ust_registered_probe *reg_probe; |
1c324e59 | 1124 | |
f0cc794d MD |
1125 | if (_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1126 | TRACEPOINT_PROVIDER)++) { | |
1127 | return; | |
1128 | } | |
e8bd1da7 MD |
1129 | /* |
1130 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
1131 | * static inline function that ensures every probe PROVIDER | |
1132 | * argument match the provider within which they appear. It | |
1133 | * calls empty static inline functions, and therefore has no | |
1134 | * runtime effect. However, if it detects an error, a linker | |
1135 | * error will appear. | |
1136 | */ | |
1137 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
4e48b5d2 MD |
1138 | assert(!_TP_COMBINE_TOKENS(__lttng_ust_probe_register_cookie___, TRACEPOINT_PROVIDER)); |
1139 | reg_probe = lttng_ust_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); | |
1140 | if (!reg_probe) { | |
1141 | fprintf(stderr, "LTTng-UST: Error while registering tracepoint probe.\n"); | |
7d381d6e MD |
1142 | abort(); |
1143 | } | |
4e48b5d2 | 1144 | _TP_COMBINE_TOKENS(__lttng_ust_probe_register_cookie___, TRACEPOINT_PROVIDER) = reg_probe; |
1c324e59 MD |
1145 | } |
1146 | ||
c589eca2 | 1147 | static void |
9c9c1ece | 1148 | _TP_COMBINE_TOKENS(__lttng_ust_events_exit__, TRACEPOINT_PROVIDER)(void) |
c589eca2 | 1149 | lttng_ust_notrace __attribute__((destructor)); |
a8909ba5 | 1150 | static void |
9c9c1ece | 1151 | _TP_COMBINE_TOKENS(__lttng_ust_events_exit__, TRACEPOINT_PROVIDER)(void) |
1c324e59 | 1152 | { |
f0cc794d MD |
1153 | if (--_TP_COMBINE_TOKENS(__probe_register_refcount___, |
1154 | TRACEPOINT_PROVIDER)) { | |
1155 | return; | |
1156 | } | |
4e48b5d2 MD |
1157 | lttng_ust_probe_unregister(_TP_COMBINE_TOKENS(__lttng_ust_probe_register_cookie___, TRACEPOINT_PROVIDER)); |
1158 | _TP_COMBINE_TOKENS(__lttng_ust_probe_register_cookie___, TRACEPOINT_PROVIDER) = NULL; | |
1c324e59 | 1159 | } |
628e1d81 | 1160 | |
6c8cfec7 | 1161 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER) |
1d18d519 | 1162 | __attribute__((visibility("default"))); |