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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> |
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> |
4849bc7a | 18 | #include <lttng/ust-api-compat.h> |
44c72f10 | 19 | #include <string.h> |
1c324e59 | 20 | |
ee0889a3 | 21 | #define LTTNG_UST__NULL_STRING "(null)" |
24a39530 | 22 | |
1c324e59 | 23 | /* |
7f2f82c3 | 24 | * LTTNG_UST_TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the |
1c324e59 MD |
25 | * same arguments and having the same field layout. |
26 | * | |
7f2f82c3 | 27 | * LTTNG_UST_TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with |
1c324e59 MD |
28 | * its own provider and name. It refers to a class (template). |
29 | * | |
7f2f82c3 | 30 | * LTTNG_UST_TRACEPOINT_EVENT declared both a class and an instance and does a |
1c324e59 MD |
31 | * direct mapping from the instance to the class. |
32 | */ | |
33 | ||
7f2f82c3 MJ |
34 | #undef LTTNG_UST_TRACEPOINT_EVENT |
35 | #define LTTNG_UST_TRACEPOINT_EVENT(_provider, _name, _args, _fields) \ | |
36 | LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, \ | |
6eddcb06 MJ |
37 | LTTNG_UST__TP_PARAMS(_args), \ |
38 | LTTNG_UST__TP_PARAMS(_fields)) \ | |
7f2f82c3 | 39 | LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \ |
6eddcb06 | 40 | LTTNG_UST__TP_PARAMS(_args)) |
1c324e59 | 41 | |
7f2f82c3 MJ |
42 | #undef LTTNG_UST_TRACEPOINT_EVENT_CLASS |
43 | #define LTTNG_UST_TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
6eddcb06 | 44 | LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, LTTNG_UST__TP_PARAMS(_args), LTTNG_UST__TP_PARAMS(_fields)) |
f8021d08 | 45 | |
7f2f82c3 MJ |
46 | #undef LTTNG_UST_TRACEPOINT_EVENT_INSTANCE |
47 | #define LTTNG_UST_TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
6eddcb06 | 48 | LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, LTTNG_UST__TP_PARAMS(_args)) |
f8021d08 | 49 | |
1c324e59 | 50 | /* Helpers */ |
ca6ed78d | 51 | #define LTTNG_UST__TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) |
1c324e59 | 52 | |
1210ca90 | 53 | #define lttng_ust__tp_max_t(type, x, y) \ |
1c324e59 | 54 | ({ \ |
1210ca90 MJ |
55 | type lttng_ust__max1 = (x); \ |
56 | type lttng_ust__max2 = (y); \ | |
57 | lttng_ust__max1 > lttng_ust__max2 ? lttng_ust__max1: lttng_ust__max2; \ | |
1c324e59 MD |
58 | }) |
59 | ||
60 | /* | |
61 | * Stage 0 of tracepoint event generation. | |
62 | * | |
7f2f82c3 | 63 | * Check that each LTTNG_UST_TRACEPOINT_EVENT provider argument match the |
5b393d64 | 64 | * LTTNG_UST_TRACEPOINT_PROVIDER by creating dummy callbacks. |
1c324e59 MD |
65 | */ |
66 | ||
7f2f82c3 | 67 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
1c324e59 MD |
68 | #include <lttng/ust-tracepoint-event-reset.h> |
69 | ||
106ff4da | 70 | static inline |
5b393d64 | 71 | void LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_mismatch_, LTTNG_UST_TRACEPOINT_PROVIDER)(void) |
106ff4da | 72 | lttng_ust_notrace; |
1c324e59 | 73 | static inline |
5b393d64 | 74 | void LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_mismatch_, LTTNG_UST_TRACEPOINT_PROVIDER)(void) |
1c324e59 MD |
75 | { |
76 | } | |
77 | ||
7f2f82c3 MJ |
78 | #undef LTTNG_UST__TRACEPOINT_EVENT_CLASS |
79 | #define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
0274f7f2 | 80 | lttng_ust_tracepoint_provider_mismatch_##_provider(); |
1c324e59 | 81 | |
7f2f82c3 MJ |
82 | #undef LTTNG_UST__TRACEPOINT_EVENT_INSTANCE |
83 | #define LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
0274f7f2 | 84 | lttng_ust_tracepoint_provider_mismatch_##_provider(); |
1c324e59 | 85 | |
106ff4da | 86 | static inline |
5b393d64 | 87 | void LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_check_, LTTNG_UST_TRACEPOINT_PROVIDER)(void) |
106ff4da | 88 | lttng_ust_notrace; |
e8bd1da7 | 89 | static inline |
5b393d64 | 90 | void LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_check_, LTTNG_UST_TRACEPOINT_PROVIDER)(void) |
1c324e59 | 91 | { |
bb71a8ea | 92 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
1c324e59 MD |
93 | } |
94 | ||
f56cd1d5 MD |
95 | /* |
96 | * Stage 0.1 of tracepoint event generation. | |
97 | * | |
7f2f82c3 | 98 | * Check that each LTTNG_UST_TRACEPOINT_EVENT provider:name does not exceed the |
f56cd1d5 MD |
99 | * tracepoint name length limit. |
100 | */ | |
101 | ||
7f2f82c3 | 102 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
f56cd1d5 MD |
103 | #include <lttng/ust-tracepoint-event-reset.h> |
104 | ||
7f2f82c3 MJ |
105 | #undef LTTNG_UST__TRACEPOINT_EVENT_INSTANCE |
106 | #define LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
81b16412 | 107 | lttng_ust_tracepoint_validate_name_len(_provider, _name); |
f56cd1d5 | 108 | |
bb71a8ea | 109 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
f56cd1d5 | 110 | |
c75c0422 MD |
111 | /* |
112 | * Stage 0.2 of tracepoint event generation. | |
113 | * | |
114 | * Create dummy trace prototypes for each event class, and for each used | |
115 | * template. This will allow checking whether the prototypes from the | |
116 | * class and the instance using the class actually match. | |
117 | */ | |
118 | ||
7f2f82c3 | 119 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
c75c0422 MD |
120 | #include <lttng/ust-tracepoint-event-reset.h> |
121 | ||
cadfcbfc MJ |
122 | #undef LTTNG_UST_TP_ARGS |
123 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
c75c0422 | 124 | |
7f2f82c3 MJ |
125 | #undef LTTNG_UST__TRACEPOINT_EVENT_INSTANCE |
126 | #define LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
bfcc2759 | 127 | void lttng_ust__event_template_proto___##_provider##___##_template(LTTNG_UST__TP_ARGS_DATA_PROTO(_args)); |
c75c0422 | 128 | |
7f2f82c3 MJ |
129 | #undef LTTNG_UST__TRACEPOINT_EVENT_CLASS |
130 | #define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
bfcc2759 | 131 | void lttng_ust__event_template_proto___##_provider##___##_name(LTTNG_UST__TP_ARGS_DATA_PROTO(_args)); |
c75c0422 | 132 | |
bb71a8ea | 133 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
c75c0422 | 134 | |
c785c634 MD |
135 | /* |
136 | * Stage 0.9 of tracepoint event generation | |
137 | * | |
138 | * Unfolding the enums | |
139 | */ | |
140 | #include <lttng/ust-tracepoint-event-reset.h> | |
141 | ||
142 | /* Enumeration entry (single value) */ | |
78684808 MJ |
143 | #undef lttng_ust_field_enum_value |
144 | #define lttng_ust_field_enum_value(_string, _value) \ | |
5defa774 | 145 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_enum_entry, { \ |
891d6b55 | 146 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ |
a6f80644 | 147 | .start = { \ |
eae3c729 | 148 | .value = lttng_ust_is_signed_type(__typeof__(_value)) ? \ |
a6f80644 | 149 | (long long) (_value) : (_value), \ |
eae3c729 | 150 | .signedness = lttng_ust_is_signed_type(__typeof__(_value)), \ |
a6f80644 MD |
151 | }, \ |
152 | .end = { \ | |
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 | .string = (_string), \ | |
891d6b55 | 158 | }), |
c785c634 MD |
159 | |
160 | /* Enumeration entry (range) */ | |
78684808 MJ |
161 | #undef lttng_ust_field_enum_range |
162 | #define lttng_ust_field_enum_range(_string, _range_start, _range_end) \ | |
5defa774 | 163 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_enum_entry, { \ |
891d6b55 | 164 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ |
a6f80644 | 165 | .start = { \ |
eae3c729 | 166 | .value = lttng_ust_is_signed_type(__typeof__(_range_start)) ? \ |
a6f80644 | 167 | (long long) (_range_start) : (_range_start), \ |
eae3c729 | 168 | .signedness = lttng_ust_is_signed_type(__typeof__(_range_start)), \ |
a6f80644 MD |
169 | }, \ |
170 | .end = { \ | |
eae3c729 | 171 | .value = lttng_ust_is_signed_type(__typeof__(_range_end)) ? \ |
a6f80644 | 172 | (long long) (_range_end) : (_range_end), \ |
eae3c729 | 173 | .signedness = lttng_ust_is_signed_type(__typeof__(_range_end)), \ |
a6f80644 MD |
174 | }, \ |
175 | .string = (_string), \ | |
891d6b55 | 176 | }), |
c785c634 | 177 | |
3e762260 | 178 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
78684808 MJ |
179 | #undef lttng_ust_field_enum_auto |
180 | #define lttng_ust_field_enum_auto(_string) \ | |
5defa774 | 181 | LTTNG_UST_COMPOUND_LITERAL(const struct lttng_ust_enum_entry, { \ |
891d6b55 | 182 | .struct_size = sizeof(struct lttng_ust_enum_entry), \ |
3e762260 PP |
183 | .start = { \ |
184 | .value = -1ULL, \ | |
185 | .signedness = 0, \ | |
186 | }, \ | |
187 | .end = { \ | |
188 | .value = -1ULL, \ | |
189 | .signedness = 0, \ | |
190 | }, \ | |
191 | .string = (_string), \ | |
1a37a873 | 192 | .options = LTTNG_UST_ENUM_ENTRY_OPTION_IS_AUTO, \ |
891d6b55 | 193 | }), |
3e762260 | 194 | |
4849bc7a MJ |
195 | #undef LTTNG_UST_TP_ENUM_VALUES |
196 | #define LTTNG_UST_TP_ENUM_VALUES(...) \ | |
c785c634 MD |
197 | __VA_ARGS__ |
198 | ||
4849bc7a MJ |
199 | #if LTTNG_UST_COMPAT_API(0) |
200 | # undef TP_ENUM_VALUES | |
201 | # define TP_ENUM_VALUES LTTNG_UST_TP_ENUM_VALUES | |
202 | #endif /* #if LTTNG_UST_COMPAT_API(0) */ | |
203 | ||
2ebf164b MJ |
204 | #undef LTTNG_UST_TRACEPOINT_ENUM |
205 | #define LTTNG_UST_TRACEPOINT_ENUM(_provider, _name, _values) \ | |
3d33ca1d | 206 | const struct lttng_ust_enum_entry * const __enum_values__##_provider##_##_name[] = { \ |
c785c634 | 207 | _values \ |
78684808 | 208 | lttng_ust_field_enum_value("", 0) /* Dummy, 0-len array forbidden by C99. */ \ |
c785c634 | 209 | }; |
bb71a8ea | 210 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
2df82195 FD |
211 | |
212 | /* | |
213 | * Stage 0.9.1 | |
214 | * Verifying array and sequence elements are of an integer type. | |
215 | */ | |
216 | ||
7f2f82c3 | 217 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
2df82195 FD |
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 | ||
10937ee5 MJ |
222 | #undef lttng_ust__field_array_encoded |
223 | #define lttng_ust__field_array_encoded(_type, _item, _src, _byte_order, \ | |
2df82195 FD |
224 | _length, _encoding, _nowrite, \ |
225 | _elem_type_base) \ | |
10937ee5 | 226 | lttng_ust_field_array_element_type_is_supported(_type, _item); |
2df82195 | 227 | |
1d188af9 MJ |
228 | #undef lttng_ust__field_sequence_encoded |
229 | #define lttng_ust__field_sequence_encoded(_type, _item, _src, _byte_order, \ | |
2df82195 FD |
230 | _length_type, _src_length, _encoding, _nowrite, \ |
231 | _elem_type_base) \ | |
10937ee5 | 232 | lttng_ust_field_array_element_type_is_supported(_type, _item); |
2df82195 | 233 | |
efa14d16 MJ |
234 | #undef LTTNG_UST_TP_FIELDS |
235 | #define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
2df82195 | 236 | |
7f2f82c3 MJ |
237 | #undef LTTNG_UST__TRACEPOINT_EVENT_CLASS |
238 | #define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
2df82195 | 239 | _fields |
c785c634 | 240 | |
bb71a8ea | 241 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
c785c634 | 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 | ||
7f2f82c3 | 250 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
1c324e59 | 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 | |
b4064f28 MJ |
255 | #undef lttng_ust__field_integer_ext |
256 | #define lttng_ust__field_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 | |
891226fc MJ |
265 | #undef lttng_ust__field_float |
266 | #define lttng_ust__field_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 | |
10937ee5 MJ |
275 | #undef lttng_ust__field_array_encoded |
276 | #define lttng_ust__field_array_encoded(_type, _item, _src, _byte_order, \ | |
f3ec4cb5 MD |
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 | |
1d188af9 MJ |
296 | #undef lttng_ust__field_sequence_encoded |
297 | #define lttng_ust__field_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", \ | |
baa8acf3 | 303 | .type = lttng_ust_type_integer_define(_length_type, LTTNG_UST_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 | |
3202f63a MJ |
324 | #undef lttng_ust__field_string |
325 | #define lttng_ust__field_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 | |
ddde62ca MJ |
340 | #undef lttng_ust__field_unused |
341 | #define lttng_ust__field_unused(_src) | |
5152f6df | 342 | |
78684808 MJ |
343 | #undef lttng_ust__field_enum |
344 | #define lttng_ust__field_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, \ | |
baa8acf3 | 354 | .container_type = lttng_ust_type_integer_define(_type, LTTNG_UST_BYTE_ORDER, 10), \ |
a084756d | 355 | }), \ |
c785c634 | 356 | .nowrite = _nowrite, \ |
25cff019 MD |
357 | .nofilter = 0, \ |
358 | }), | |
c785c634 | 359 | |
efa14d16 MJ |
360 | #undef LTTNG_UST_TP_FIELDS |
361 | #define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1c324e59 | 362 | |
7f2f82c3 MJ |
363 | #undef LTTNG_UST__TRACEPOINT_EVENT_CLASS |
364 | #define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
bfcc2759 | 365 | static const struct lttng_ust_event_field * const lttng_ust__event_fields___##_provider##___##_name[] = { \ |
1c324e59 | 366 | _fields \ |
b4064f28 | 367 | lttng_ust_field_integer(int, dummy, 0) /* Dummy, C99 forbids 0-len array. */ \ |
1c324e59 MD |
368 | }; |
369 | ||
2ebf164b MJ |
370 | #undef LTTNG_UST_TRACEPOINT_ENUM |
371 | #define LTTNG_UST_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, \ | |
ca6ed78d | 376 | .nr_entries = LTTNG_UST__TP_ARRAY_SIZE(__enum_values__##_provider##_##_name) - 1, \ |
c785c634 MD |
377 | }; |
378 | ||
bb71a8ea | 379 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
1c324e59 MD |
380 | |
381 | /* | |
382 | * Stage 2 of tracepoint event generation. | |
383 | * | |
384 | * Create probe callback prototypes. | |
385 | */ | |
386 | ||
7f2f82c3 | 387 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
1c324e59 MD |
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 | |
7f2f82c3 MJ |
393 | #undef LTTNG_UST__TRACEPOINT_EVENT_CLASS |
394 | #define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
bfcc2759 | 395 | static void lttng_ust__event_probe__##_provider##___##_name(LTTNG_UST__TP_ARGS_DATA_PROTO(_args)); |
1c324e59 | 396 | |
bb71a8ea | 397 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
1c324e59 MD |
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 | ||
7f2f82c3 | 405 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
1c324e59 | 406 | #include <lttng/ust-tracepoint-event-reset.h> |
4774c8f3 | 407 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 408 | |
b4064f28 MJ |
409 | #undef lttng_ust__field_integer_ext |
410 | #define lttng_ust__field_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 | ||
891226fc MJ |
416 | #undef lttng_ust__field_float |
417 | #define lttng_ust__field_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 | ||
10937ee5 MJ |
423 | #undef lttng_ust__field_array_encoded |
424 | #define lttng_ust__field_array_encoded(_type, _item, _src, _byte_order, _length, _encoding, \ | |
f3ec4cb5 | 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 | ||
1d188af9 MJ |
431 | #undef lttng_ust__field_sequence_encoded |
432 | #define lttng_ust__field_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 | ||
3202f63a MJ |
443 | #undef lttng_ust__field_string |
444 | #define lttng_ust__field_string(_item, _src, _nowrite) \ | |
24a39530 | 445 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
ee0889a3 | 446 | strlen((_src) ? (_src) : LTTNG_UST__NULL_STRING) + 1; |
1c324e59 | 447 | |
ddde62ca MJ |
448 | #undef lttng_ust__field_unused |
449 | #define lttng_ust__field_unused(_src) \ | |
5152f6df MJ |
450 | if (0) \ |
451 | (void) (_src); /* Unused */ | |
452 | ||
78684808 MJ |
453 | #undef lttng_ust__field_enum |
454 | #define lttng_ust__field_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
b4064f28 | 455 | lttng_ust__field_integer_ext(_type, _item, _src, LTTNG_UST_BYTE_ORDER, 10, _nowrite) |
c785c634 | 456 | |
cadfcbfc MJ |
457 | #undef LTTNG_UST_TP_ARGS |
458 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
1c324e59 | 459 | |
efa14d16 MJ |
460 | #undef LTTNG_UST_TP_FIELDS |
461 | #define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__ | |
1c324e59 | 462 | |
7f2f82c3 MJ |
463 | #undef LTTNG_UST__TRACEPOINT_EVENT_CLASS |
464 | #define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
106ff4da | 465 | static inline \ |
bfcc2759 | 466 | size_t lttng_ust__event_get_size__##_provider##___##_name(size_t *__dynamic_len, LTTNG_UST__TP_ARGS_DATA_PROTO(_args)) \ |
106ff4da | 467 | lttng_ust_notrace; \ |
a8909ba5 | 468 | static inline \ |
bfcc2759 | 469 | size_t lttng_ust__event_get_size__##_provider##___##_name( \ |
5152f6df | 470 | size_t *__dynamic_len __attribute__((__unused__)), \ |
6eddcb06 | 471 | LTTNG_UST__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 | ||
bb71a8ea | 483 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
1c324e59 | 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 | ||
7f2f82c3 | 492 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
1ddfd641 | 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 | |
b4064f28 MJ |
497 | #undef lttng_ust__field_integer_ext |
498 | #define lttng_ust__field_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) }; \ | |
baa8acf3 MJ |
511 | if (_byte_order != LTTNG_UST_BYTE_ORDER) \ |
512 | __tmp.v = lttng_ust_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) }; \ | |
baa8acf3 MJ |
519 | if (_byte_order != LTTNG_UST_BYTE_ORDER) \ |
520 | __tmp.v = lttng_ust_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) }; \ | |
baa8acf3 MJ |
527 | if (_byte_order != LTTNG_UST_BYTE_ORDER) \ |
528 | __tmp.v = lttng_ust_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) }; \ | |
baa8acf3 MJ |
548 | if (_byte_order != LTTNG_UST_BYTE_ORDER) \ |
549 | __tmp.v = lttng_ust_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) }; \ | |
baa8acf3 MJ |
556 | if (_byte_order != LTTNG_UST_BYTE_ORDER) \ |
557 | __tmp.v = lttng_ust_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) }; \ | |
baa8acf3 MJ |
564 | if (_byte_order != LTTNG_UST_BYTE_ORDER) \ |
565 | __tmp.v = lttng_ust_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 | ||
891226fc MJ |
576 | #undef lttng_ust__field_float |
577 | #define lttng_ust__field_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 | |
10937ee5 MJ |
584 | #undef lttng_ust__field_array_encoded |
585 | #define lttng_ust__field_array_encoded(_type, _item, _src, _byte_order, _length, \ | |
f3ec4cb5 | 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 | |
1d188af9 MJ |
596 | #undef lttng_ust__field_sequence_encoded |
597 | #define lttng_ust__field_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 | |
3202f63a MJ |
608 | #undef lttng_ust__field_string |
609 | #define lttng_ust__field_string(_item, _src, _nowrite) \ | |
fa099471 | 610 | { \ |
24a39530 | 611 | const void *__ctf_tmp_ptr = \ |
ee0889a3 | 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 | |
ddde62ca MJ |
617 | #undef lttng_ust__field_unused |
618 | #define lttng_ust__field_unused(_src) \ | |
5152f6df MJ |
619 | if (0) \ |
620 | (void) (_src); | |
621 | ||
78684808 MJ |
622 | #undef lttng_ust__field_enum |
623 | #define lttng_ust__field_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
b4064f28 | 624 | lttng_ust__field_integer_ext(_type, _item, _src, LTTNG_UST_BYTE_ORDER, 10, _nowrite) |
c785c634 | 625 | |
cadfcbfc MJ |
626 | #undef LTTNG_UST_TP_ARGS |
627 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
1ddfd641 | 628 | |
efa14d16 MJ |
629 | #undef LTTNG_UST_TP_FIELDS |
630 | #define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__ | |
1ddfd641 | 631 | |
7f2f82c3 MJ |
632 | #undef LTTNG_UST__TRACEPOINT_EVENT_CLASS |
633 | #define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
1ddfd641 | 634 | static inline \ |
bfcc2759 | 635 | void lttng_ust__event_prepare_interpreter_stack__##_provider##___##_name(char *__stack_data,\ |
6eddcb06 | 636 | LTTNG_UST__TP_ARGS_DATA_PROTO(_args)) \ |
1ddfd641 | 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 | ||
bb71a8ea | 646 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
1ddfd641 | 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 | ||
7f2f82c3 | 654 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
1c324e59 | 655 | #include <lttng/ust-tracepoint-event-reset.h> |
4774c8f3 | 656 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 657 | |
b4064f28 MJ |
658 | #undef lttng_ust__field_integer_ext |
659 | #define lttng_ust__field_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
5152f6df MJ |
660 | if (0) \ |
661 | (void) (_src); /* Unused */ \ | |
bfcc2759 | 662 | lttng_ust__event_align = lttng_ust__tp_max_t(size_t, lttng_ust__event_align, lttng_ust_rb_alignof(_type)); |
1c324e59 | 663 | |
891226fc MJ |
664 | #undef lttng_ust__field_float |
665 | #define lttng_ust__field_float(_type, _item, _src, _nowrite) \ | |
5152f6df MJ |
666 | if (0) \ |
667 | (void) (_src); /* Unused */ \ | |
bfcc2759 | 668 | lttng_ust__event_align = lttng_ust__tp_max_t(size_t, lttng_ust__event_align, lttng_ust_rb_alignof(_type)); |
1c324e59 | 669 | |
10937ee5 MJ |
670 | #undef lttng_ust__field_array_encoded |
671 | #define lttng_ust__field_array_encoded(_type, _item, _src, _byte_order, _length, \ | |
f3ec4cb5 | 672 | _encoding, _nowrite, _elem_type_base) \ |
5152f6df MJ |
673 | if (0) \ |
674 | (void) (_src); /* Unused */ \ | |
bfcc2759 | 675 | lttng_ust__event_align = lttng_ust__tp_max_t(size_t, lttng_ust__event_align, lttng_ust_rb_alignof(_type)); |
1c324e59 | 676 | |
1d188af9 MJ |
677 | #undef lttng_ust__field_sequence_encoded |
678 | #define lttng_ust__field_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 */ \ | |
bfcc2759 MJ |
684 | lttng_ust__event_align = lttng_ust__tp_max_t(size_t, lttng_ust__event_align, lttng_ust_rb_alignof(_length_type)); \ |
685 | lttng_ust__event_align = lttng_ust__tp_max_t(size_t, lttng_ust__event_align, lttng_ust_rb_alignof(_type)); | |
1c324e59 | 686 | |
3202f63a MJ |
687 | #undef lttng_ust__field_string |
688 | #define lttng_ust__field_string(_item, _src, _nowrite) \ | |
5152f6df MJ |
689 | if (0) \ |
690 | (void) (_src); /* Unused */ | |
691 | ||
ddde62ca MJ |
692 | #undef lttng_ust__field_unused |
693 | #define lttng_ust__field_unused(_src) \ | |
5152f6df MJ |
694 | if (0) \ |
695 | (void) (_src); /* Unused */ | |
1c324e59 | 696 | |
78684808 MJ |
697 | #undef lttng_ust__field_enum |
698 | #define lttng_ust__field_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
b4064f28 | 699 | lttng_ust__field_integer_ext(_type, _item, _src, LTTNG_UST_BYTE_ORDER, 10, _nowrite) |
c785c634 | 700 | |
cadfcbfc MJ |
701 | #undef LTTNG_UST_TP_ARGS |
702 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
1c324e59 | 703 | |
efa14d16 MJ |
704 | #undef LTTNG_UST_TP_FIELDS |
705 | #define LTTNG_UST_TP_FIELDS(...) __VA_ARGS__ | |
1c324e59 | 706 | |
7f2f82c3 MJ |
707 | #undef LTTNG_UST__TRACEPOINT_EVENT_CLASS |
708 | #define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
106ff4da | 709 | static inline \ |
bfcc2759 | 710 | size_t lttng_ust__event_get_align__##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(_args)) \ |
106ff4da | 711 | lttng_ust_notrace; \ |
1c324e59 | 712 | static inline \ |
bfcc2759 | 713 | size_t lttng_ust__event_get_align__##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(_args)) \ |
1c324e59 | 714 | { \ |
bfcc2759 | 715 | size_t lttng_ust__event_align = 1; \ |
1c324e59 | 716 | _fields \ |
bfcc2759 | 717 | return lttng_ust__event_align; \ |
1c324e59 MD |
718 | } |
719 | ||
bb71a8ea | 720 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
1c324e59 MD |
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 | ||
7f2f82c3 | 730 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
1c324e59 | 731 | #include <lttng/ust-tracepoint-event-reset.h> |
4774c8f3 | 732 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 733 | |
b4064f28 MJ |
734 | #undef lttng_ust__field_integer_ext |
735 | #define lttng_ust__field_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 | ||
891226fc MJ |
741 | #undef lttng_ust__field_float |
742 | #define lttng_ust__field_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 | ||
10937ee5 MJ |
748 | #undef lttng_ust__field_array_encoded |
749 | #define lttng_ust__field_array_encoded(_type, _item, _src, _byte_order, _length, \ | |
f3ec4cb5 | 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 | |
1d188af9 MJ |
756 | #undef lttng_ust__field_sequence_encoded |
757 | #define lttng_ust__field_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, \ | |
bae1f483 | 765 | sizeof(_type) * lttng_ust__get_dynamic_len(dest), lttng_ust_rb_alignof(_type)); \ |
27927814 | 766 | else \ |
bae1f483 | 767 | __chan->ops->event_pstrcpy_pad(&__ctx, (const char *) (_src), lttng_ust__get_dynamic_len(dest)); \ |
1c324e59 | 768 | |
3202f63a MJ |
769 | #undef lttng_ust__field_string |
770 | #define lttng_ust__field_string(_item, _src, _nowrite) \ | |
24a39530 PP |
771 | { \ |
772 | const char *__ctf_tmp_string = \ | |
ee0889a3 | 773 | ((_src) ? (_src) : LTTNG_UST__NULL_STRING); \ |
f9ec4a97 | 774 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ |
bae1f483 | 775 | lttng_ust__get_dynamic_len(dest)); \ |
24a39530 PP |
776 | } |
777 | ||
ddde62ca MJ |
778 | #undef lttng_ust__field_unused |
779 | #define lttng_ust__field_unused(_src) | |
1c324e59 | 780 | |
78684808 MJ |
781 | #undef lttng_ust__field_enum |
782 | #define lttng_ust__field_enum(_provider, _name, _type, _item, _src, _nowrite) \ | |
b4064f28 | 783 | lttng_ust__field_integer_ext(_type, _item, _src, LTTNG_UST_BYTE_ORDER, 10, _nowrite) |
c785c634 | 784 | |
1c324e59 | 785 | /* Beware: this get len actually consumes the len value */ |
bae1f483 MJ |
786 | #undef lttng_ust__get_dynamic_len |
787 | #define lttng_ust__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 | 791 | |
efa14d16 MJ |
792 | #undef LTTNG_UST_TP_FIELDS |
793 | #define LTTNG_UST_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 | */ | |
91fe3e13 MJ |
800 | #undef LTTNG_UST__TP_SESSION_CHECK |
801 | #ifdef LTTNG_UST_TP_SESSION_CHECK | |
802 | #define LTTNG_UST__TP_SESSION_CHECK(session, csession) (session == csession) | |
95c25348 | 803 | #else /* TP_SESSION_CHECK */ |
91fe3e13 | 804 | #define LTTNG_UST__TP_SESSION_CHECK(session, csession) 1 |
95c25348 PW |
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 | */ | |
c28c4a88 MJ |
813 | #undef LTTNG_UST__TP_IP_PARAM |
814 | ||
815 | #ifdef LTTNG_UST_TP_IP_PARAM | |
816 | #define LTTNG_UST__TP_IP_PARAM(x) (x) | |
5dadb547 | 817 | #else /* TP_IP_PARAM */ |
97904b41 | 818 | |
2eba8e39 | 819 | #if defined(LTTNG_UST_ARCH_PPC) && !defined(LTTNG_UST_ARCH_PPC64) |
c28c4a88 | 820 | #define LTTNG_UST__TP_IP_PARAM(x) NULL |
2eba8e39 | 821 | #else |
c28c4a88 | 822 | #define LTTNG_UST__TP_IP_PARAM(x) __builtin_return_address(0) |
2eba8e39 | 823 | #endif |
97904b41 | 824 | |
5dadb547 MD |
825 | #endif /* TP_IP_PARAM */ |
826 | ||
1ddfd641 MD |
827 | /* |
828 | * Using twice size for filter stack data to hold size and pointer for | |
829 | * each field (worse case). For integers, max size required is 64-bit. | |
830 | * Same for double-precision floats. Those fit within | |
831 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 832 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 833 | */ |
7f2f82c3 MJ |
834 | #undef LTTNG_UST__TRACEPOINT_EVENT_CLASS |
835 | #define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
106ff4da | 836 | static \ |
bfcc2759 | 837 | void lttng_ust__event_probe__##_provider##___##_name(LTTNG_UST__TP_ARGS_DATA_PROTO(_args)) \ |
106ff4da | 838 | lttng_ust_notrace; \ |
a8909ba5 | 839 | static \ |
bfcc2759 | 840 | void lttng_ust__event_probe__##_provider##___##_name(LTTNG_UST__TP_ARGS_DATA_PROTO(_args)) \ |
1c324e59 | 841 | { \ |
ba99fbe2 | 842 | struct lttng_ust_event_common *__event = (struct lttng_ust_event_common *) __tp_data; \ |
1c324e59 | 843 | size_t __dynamic_len_idx = 0; \ |
bfcc2759 | 844 | const size_t __num_fields = LTTNG_UST__TP_ARRAY_SIZE(lttng_ust__event_fields___##_provider##___##_name) - 1; \ |
d71b57b9 | 845 | union { \ |
75026e9f | 846 | size_t __dynamic_len[__num_fields]; \ |
ba99fbe2 | 847 | char __interpreter_stack_data[2 * sizeof(unsigned long) * __num_fields]; \ |
d71b57b9 | 848 | } __stackvar; \ |
1c324e59 | 849 | int __ret; \ |
a2e4d05e | 850 | bool __interpreter_stack_prepared = false; \ |
1c324e59 MD |
851 | \ |
852 | if (0) \ | |
853 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
ba99fbe2 MD |
854 | switch (__event->type) { \ |
855 | case LTTNG_UST_EVENT_TYPE_RECORDER: \ | |
856 | { \ | |
bfcc2759 MJ |
857 | struct lttng_ust_event_recorder *lttng_ust__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \ |
858 | struct lttng_ust_channel_buffer *__chan = lttng_ust__event_recorder->chan; \ | |
e7bc0ef6 | 859 | struct lttng_ust_channel_common *__chan_common = __chan->parent; \ |
ba99fbe2 | 860 | \ |
91fe3e13 | 861 | if (!LTTNG_UST__TP_SESSION_CHECK(session, __chan_common->session)) \ |
ba99fbe2 | 862 | return; \ |
e7bc0ef6 | 863 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan_common->session->active))) \ |
ba99fbe2 | 864 | return; \ |
e7bc0ef6 | 865 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan_common->enabled))) \ |
ba99fbe2 MD |
866 | return; \ |
867 | break; \ | |
868 | } \ | |
869 | case LTTNG_UST_EVENT_TYPE_NOTIFIER: \ | |
870 | break; \ | |
871 | } \ | |
872 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
1c324e59 | 873 | return; \ |
251c9f75 | 874 | if (caa_unlikely(!LTTNG_UST_TP_RCU_LINK_TEST())) \ |
1b436e01 | 875 | return; \ |
a2e4d05e | 876 | if (caa_unlikely(CMM_ACCESS_ONCE(__event->eval_filter))) { \ |
bfcc2759 | 877 | lttng_ust__event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ |
6eddcb06 | 878 | LTTNG_UST__TP_ARGS_DATA_VAR(_args)); \ |
a2e4d05e MD |
879 | __interpreter_stack_prepared = true; \ |
880 | if (caa_likely(__event->run_filter(__event, \ | |
881 | __stackvar.__interpreter_stack_data, NULL) != LTTNG_UST_EVENT_FILTER_ACCEPT)) \ | |
61ce3223 | 882 | return; \ |
1ddfd641 | 883 | } \ |
ba99fbe2 MD |
884 | switch (__event->type) { \ |
885 | case LTTNG_UST_EVENT_TYPE_RECORDER: \ | |
886 | { \ | |
bfcc2759 MJ |
887 | size_t __event_len, lttng_ust__event_align; \ |
888 | struct lttng_ust_event_recorder *lttng_ust__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \ | |
889 | struct lttng_ust_channel_buffer *__chan = lttng_ust__event_recorder->chan; \ | |
b5457df5 | 890 | struct lttng_ust_ring_buffer_ctx __ctx; \ |
ba99fbe2 | 891 | \ |
bfcc2759 | 892 | __event_len = lttng_ust__event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ |
6eddcb06 | 893 | LTTNG_UST__TP_ARGS_DATA_VAR(_args)); \ |
bfcc2759 MJ |
894 | lttng_ust__event_align = lttng_ust__event_get_align__##_provider##___##_name(LTTNG_UST__TP_ARGS_VAR(_args)); \ |
895 | lttng_ust_ring_buffer_ctx_init(&__ctx, lttng_ust__event_recorder, __event_len, lttng_ust__event_align, \ | |
c28c4a88 | 896 | LTTNG_UST__TP_IP_PARAM(LTTNG_UST_TP_IP_PARAM)); \ |
8936b6c0 | 897 | __ret = __chan->ops->event_reserve(&__ctx); \ |
ba99fbe2 MD |
898 | if (__ret < 0) \ |
899 | return; \ | |
900 | _fields \ | |
901 | __chan->ops->event_commit(&__ctx); \ | |
902 | break; \ | |
903 | } \ | |
904 | case LTTNG_UST_EVENT_TYPE_NOTIFIER: \ | |
905 | { \ | |
bfcc2759 | 906 | struct lttng_ust_event_notifier *lttng_ust__event_notifier = (struct lttng_ust_event_notifier *) __event->child; \ |
a2e4d05e MD |
907 | struct lttng_ust_notification_ctx __notif_ctx; \ |
908 | \ | |
909 | __notif_ctx.struct_size = sizeof(struct lttng_ust_notification_ctx); \ | |
bfcc2759 | 910 | __notif_ctx.eval_capture = CMM_ACCESS_ONCE(lttng_ust__event_notifier->eval_capture); \ |
ba99fbe2 | 911 | \ |
a2e4d05e | 912 | if (caa_unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ |
bfcc2759 | 913 | lttng_ust__event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \ |
6eddcb06 | 914 | LTTNG_UST__TP_ARGS_DATA_VAR(_args)); \ |
ba99fbe2 | 915 | \ |
bfcc2759 | 916 | lttng_ust__event_notifier->notification_send(lttng_ust__event_notifier, \ |
a2e4d05e MD |
917 | __stackvar.__interpreter_stack_data, \ |
918 | &__notif_ctx); \ | |
ba99fbe2 MD |
919 | break; \ |
920 | } \ | |
921 | } \ | |
1c324e59 MD |
922 | } |
923 | ||
bb71a8ea | 924 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
1c324e59 | 925 | |
bae1f483 | 926 | #undef lttng_ust__get_dynamic_len |
1c324e59 | 927 | |
68755429 MD |
928 | /* |
929 | * Stage 5.1 of tracepoint event generation. | |
930 | * | |
931 | * Create probe signature | |
932 | */ | |
933 | ||
7f2f82c3 | 934 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
68755429 MD |
935 | #include <lttng/ust-tracepoint-event-reset.h> |
936 | ||
cadfcbfc MJ |
937 | #undef LTTNG_UST_TP_ARGS |
938 | #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__ | |
9eb06182 | 939 | |
4a36f0f1 | 940 | #define LTTNG_UST__TP_EXTRACT_STRING2(...) #__VA_ARGS__ |
68755429 | 941 | |
7f2f82c3 MJ |
942 | #undef LTTNG_UST__TRACEPOINT_EVENT_CLASS |
943 | #define LTTNG_UST__TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
ff82b7c1 | 944 | static const char __tp_event_signature___##_provider##___##_name[] = \ |
4a36f0f1 | 945 | LTTNG_UST__TP_EXTRACT_STRING2(_args); |
68755429 | 946 | |
bb71a8ea | 947 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
68755429 | 948 | |
4a36f0f1 | 949 | #undef LTTNG_UST__TP_EXTRACT_STRING2 |
9eb06182 | 950 | |
05ceaafd | 951 | /* |
882a56d7 | 952 | * Stage 6 of tracepoint event generation. |
1c324e59 | 953 | * |
df854e41 MD |
954 | * Tracepoint loglevel mapping definition generation. We generate a |
955 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
956 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
957 | * the compiler will complain. | |
05ceaafd MD |
958 | */ |
959 | ||
7f2f82c3 | 960 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
05ceaafd MD |
961 | #include <lttng/ust-tracepoint-event-reset.h> |
962 | ||
4ea4f80e MD |
963 | /* |
964 | * Declare _loglevel___##__provider##___##__name as non-static, with | |
965 | * hidden visibility for c++ handling of weakref. We do a weakref to the | |
966 | * symbol in a later stage, which requires that the symbol is not | |
967 | * mangled. | |
968 | */ | |
969 | #ifdef __cplusplus | |
fc6d7bef | 970 | #define LTTNG_UST_TP_EXTERN_C extern "C" |
4ea4f80e | 971 | #else |
fc6d7bef | 972 | #define LTTNG_UST_TP_EXTERN_C |
4ea4f80e MD |
973 | #endif |
974 | ||
612e9ce4 MJ |
975 | #undef LTTNG_UST_TRACEPOINT_LOGLEVEL |
976 | #define LTTNG_UST_TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ | |
3d33ca1d MD |
977 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ |
978 | LTTNG_UST_TP_EXTERN_C const int * const _loglevel___##__provider##___##__name \ | |
979 | __attribute__((visibility("hidden"))) = \ | |
457a6b58 | 980 | &_loglevel_value___##__provider##___##__name; |
df854e41 | 981 | |
bb71a8ea | 982 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
df854e41 | 983 | |
fc6d7bef | 984 | #undef LTTNG_UST_TP_EXTERN_C |
4ea4f80e | 985 | |
6ddc916d MD |
986 | /* |
987 | * Stage 6.1 of tracepoint event generation. | |
988 | * | |
989 | * Tracepoint UML URI info. | |
990 | */ | |
991 | ||
7f2f82c3 | 992 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
6ddc916d MD |
993 | #include <lttng/ust-tracepoint-event-reset.h> |
994 | ||
4ea4f80e MD |
995 | /* |
996 | * Declare _model_emf_uri___##__provider##___##__name as non-static, | |
997 | * with hidden visibility for c++ handling of weakref. We do a weakref | |
998 | * to the symbol in a later stage, which requires that the symbol is not | |
999 | * mangled. | |
1000 | */ | |
1001 | #ifdef __cplusplus | |
fc6d7bef | 1002 | #define LTTNG_UST_TP_EXTERN_C extern "C" |
4ea4f80e | 1003 | #else |
fc6d7bef | 1004 | #define LTTNG_UST_TP_EXTERN_C |
4ea4f80e MD |
1005 | #endif |
1006 | ||
dbcc2f92 MJ |
1007 | #undef LTTNG_UST_TRACEPOINT_MODEL_EMF_URI |
1008 | #define LTTNG_UST_TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
3d33ca1d | 1009 | LTTNG_UST_TP_EXTERN_C const char * const _model_emf_uri___##__provider##___##__name \ |
082802f9 | 1010 | __attribute__((visibility("hidden"))) = __uri; \ |
6ddc916d | 1011 | |
bb71a8ea | 1012 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
6ddc916d | 1013 | |
fc6d7bef | 1014 | #undef LTTNG_UST_TP_EXTERN_C |
4ea4f80e | 1015 | |
5b4c6da4 MD |
1016 | /* |
1017 | * Stage 7.0 of tracepoint event generation. | |
1018 | * | |
1019 | * Declare toplevel descriptor for the whole probe. | |
1020 | * Unlike C, C++ does not allow tentative definitions. Therefore, we | |
1021 | * need to explicitly declare the variable with "extern", using hidden | |
1022 | * visibility to keep this symbol from being exported to the global | |
1023 | * symbol table. | |
1024 | */ | |
1025 | ||
c9201081 | 1026 | extern const struct lttng_ust_probe_desc LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_desc___, LTTNG_UST_TRACEPOINT_PROVIDER) |
5b4c6da4 MD |
1027 | __attribute__((visibility("hidden"))); |
1028 | ||
df854e41 | 1029 | /* |
882a56d7 | 1030 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
1031 | * |
1032 | * Create events description structures. We use a weakref because | |
3d33ca1d | 1033 | * loglevels are optional. If not declared, the event will point to |
df854e41 | 1034 | * a loglevel that contains NULL. |
3d33ca1d MD |
1035 | * |
1036 | * C++ requires that const objects have a user-declared default | |
1037 | * constructor. However, in both C++ and C, weakref cannot be | |
1038 | * initialized because it causes the weakref attribute to be ignored. | |
1039 | * Therefore, the loglevel and model_emf_uri pointers are not const | |
1040 | * to ensure C++ compilers default-initialize them. | |
df854e41 MD |
1041 | */ |
1042 | ||
7f2f82c3 | 1043 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
df854e41 MD |
1044 | #include <lttng/ust-tracepoint-event-reset.h> |
1045 | ||
7f2f82c3 MJ |
1046 | #undef LTTNG_UST__TRACEPOINT_EVENT_INSTANCE |
1047 | #define LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
1048 | static const int * \ |
1049 | __ref_loglevel___##_provider##___##_name \ | |
1050 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
1051 | static const char * \ |
1052 | __ref_model_emf_uri___##_provider##___##_name \ | |
1053 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
bfcc2759 | 1054 | static const struct lttng_ust_event_desc lttng_ust__event_desc___##_provider##_##_name = { \ |
dc11f93f | 1055 | .struct_size = sizeof(struct lttng_ust_event_desc), \ |
5b4c6da4 | 1056 | .event_name = #_name, \ |
c9201081 | 1057 | .probe_desc = <tng_ust__probe_desc___##_provider, \ |
bfcc2759 MJ |
1058 | .probe_callback = (void (*)(void)) <tng_ust__event_probe__##_provider##___##_template, \ |
1059 | .fields = lttng_ust__event_fields___##_provider##___##_template, \ | |
1060 | .nr_fields = LTTNG_UST__TP_ARRAY_SIZE(lttng_ust__event_fields___##_provider##___##_template) - 1, \ | |
882a56d7 | 1061 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 1062 | .signature = __tp_event_signature___##_provider##___##_template, \ |
dc11f93f | 1063 | .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \ |
df854e41 MD |
1064 | }; |
1065 | ||
bb71a8ea | 1066 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
05ceaafd | 1067 | |
df854e41 | 1068 | /* |
882a56d7 | 1069 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
1070 | * |
1071 | * Create array of events. | |
1072 | */ | |
1073 | ||
7f2f82c3 | 1074 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
df854e41 MD |
1075 | #include <lttng/ust-tracepoint-event-reset.h> |
1076 | ||
7f2f82c3 MJ |
1077 | #undef LTTNG_UST__TRACEPOINT_EVENT_INSTANCE |
1078 | #define LTTNG_UST__TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
bfcc2759 | 1079 | <tng_ust__event_desc___##_provider##_##_name, |
df854e41 | 1080 | |
bfcc2759 | 1081 | static const struct lttng_ust_event_desc * const LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__event_desc___, LTTNG_UST_TRACEPOINT_PROVIDER)[] = { |
bb71a8ea | 1082 | #include LTTNG_UST_TRACEPOINT_INCLUDE |
1c80c909 | 1083 | NULL, /* Dummy, C99 forbids 0-len array. */ |
05ceaafd MD |
1084 | }; |
1085 | ||
df854e41 | 1086 | |
05ceaafd | 1087 | /* |
882a56d7 | 1088 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
1089 | * |
1090 | * Create a toplevel descriptor for the whole probe. | |
1091 | */ | |
1092 | ||
c9201081 | 1093 | const struct lttng_ust_probe_desc LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_desc___, LTTNG_UST_TRACEPOINT_PROVIDER) = { |
dc11f93f | 1094 | .struct_size = sizeof(struct lttng_ust_probe_desc), |
061fc37a | 1095 | .provider_name = lttng_ust__tp_stringify(LTTNG_UST_TRACEPOINT_PROVIDER), |
bfcc2759 MJ |
1096 | .event_desc = LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__event_desc___, LTTNG_UST_TRACEPOINT_PROVIDER), |
1097 | .nr_events = LTTNG_UST__TP_ARRAY_SIZE(LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__event_desc___, LTTNG_UST_TRACEPOINT_PROVIDER)) - 1, | |
71d31690 MD |
1098 | .major = LTTNG_UST_PROVIDER_MAJOR, |
1099 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
1100 | }; |
1101 | ||
03221919 | 1102 | static int LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_refcount___, LTTNG_UST_TRACEPOINT_PROVIDER); |
f082dde9 | 1103 | static struct lttng_ust_registered_probe *LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER); |
f0cc794d | 1104 | |
05ceaafd | 1105 | /* |
882a56d7 | 1106 | * Stage 9 of tracepoint event generation. |
05ceaafd | 1107 | * |
1c324e59 | 1108 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
1109 | * |
1110 | * Generate the constructor as an externally visible symbol for use when | |
1111 | * linking the probe statically. | |
f0cc794d MD |
1112 | * |
1113 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
1114 | */ |
1115 | ||
7f2f82c3 | 1116 | /* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */ |
1c324e59 | 1117 | #include <lttng/ust-tracepoint-event-reset.h> |
465a0d04 | 1118 | static void |
11bce056 | 1119 | LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_init__, LTTNG_UST_TRACEPOINT_PROVIDER)(void) |
465a0d04 | 1120 | lttng_ust_notrace __attribute__((constructor)); |
a8909ba5 | 1121 | static void |
11bce056 | 1122 | LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_init__, LTTNG_UST_TRACEPOINT_PROVIDER)(void) |
1c324e59 | 1123 | { |
4e48b5d2 | 1124 | struct lttng_ust_registered_probe *reg_probe; |
1c324e59 | 1125 | |
03221919 | 1126 | if (LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_refcount___, |
5b393d64 | 1127 | LTTNG_UST_TRACEPOINT_PROVIDER)++) { |
f0cc794d MD |
1128 | return; |
1129 | } | |
e8bd1da7 | 1130 | /* |
5b393d64 | 1131 | * lttng_ust_tracepoint_provider_check_ ## LTTNG_UST_TRACEPOINT_PROVIDER() is a |
e8bd1da7 MD |
1132 | * static inline function that ensures every probe PROVIDER |
1133 | * argument match the provider within which they appear. It | |
1134 | * calls empty static inline functions, and therefore has no | |
1135 | * runtime effect. However, if it detects an error, a linker | |
1136 | * error will appear. | |
1137 | */ | |
5b393d64 | 1138 | LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_check_, LTTNG_UST_TRACEPOINT_PROVIDER)(); |
f082dde9 | 1139 | assert(!LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER)); |
c9201081 | 1140 | reg_probe = lttng_ust_probe_register(<TNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_desc___, LTTNG_UST_TRACEPOINT_PROVIDER)); |
4e48b5d2 MD |
1141 | if (!reg_probe) { |
1142 | fprintf(stderr, "LTTng-UST: Error while registering tracepoint probe.\n"); | |
7d381d6e MD |
1143 | abort(); |
1144 | } | |
f082dde9 | 1145 | LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER) = reg_probe; |
1c324e59 MD |
1146 | } |
1147 | ||
c589eca2 | 1148 | static void |
638ce920 | 1149 | LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_exit__, LTTNG_UST_TRACEPOINT_PROVIDER)(void) |
c589eca2 | 1150 | lttng_ust_notrace __attribute__((destructor)); |
a8909ba5 | 1151 | static void |
638ce920 | 1152 | LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_exit__, LTTNG_UST_TRACEPOINT_PROVIDER)(void) |
1c324e59 | 1153 | { |
03221919 | 1154 | if (--LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_refcount___, |
5b393d64 | 1155 | LTTNG_UST_TRACEPOINT_PROVIDER)) { |
f0cc794d MD |
1156 | return; |
1157 | } | |
f082dde9 MJ |
1158 | lttng_ust_probe_unregister(LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER)); |
1159 | LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER) = NULL; | |
1c324e59 | 1160 | } |
628e1d81 | 1161 | |
5b393d64 | 1162 | int LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust_tracepoint_provider_, LTTNG_UST_TRACEPOINT_PROVIDER) |
1d18d519 | 1163 | __attribute__((visibility("default"))); |