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c7e35b03 JR |
1 | /* |
2 | * Copyright (C) 2014 - Jonathan Rajotte <jonathan.r.julien@gmail.com> | |
3 | * - Olivier Cotte <olivier.cotte@polymtl.ca> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License, version 2 only, as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
16 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
19 | #ifndef _MI_LTTNG_H | |
20 | #define _MI_LTTNG_H | |
21 | ||
22 | #include <stdint.h> | |
23 | ||
24 | #include <common/error.h> | |
25 | #include <common/macros.h> | |
26 | #include <common/config/config.h> | |
27 | #include <lttng/lttng.h> | |
28 | ||
29 | /* Instance of a machine interface writer. */ | |
30 | struct mi_writer { | |
31 | struct config_writer *writer; | |
32 | enum lttng_mi_output_type type; | |
33 | }; | |
34 | ||
35 | /* | |
36 | * Version information for the machine interface. | |
37 | */ | |
38 | struct mi_lttng_version { | |
39 | char version[NAME_MAX]; /* Version number of package */ | |
40 | uint32_t version_major; /* LTTng-Tools major version number */ | |
41 | uint32_t version_minor; /* LTTng-Tools minor version number */ | |
42 | uint32_t version_patchlevel; /* LTTng-Tools patchlevel version number */ | |
314d5222 | 43 | char version_commit[NAME_MAX]; /* Commit hash of the current version */ |
c7e35b03 JR |
44 | char version_name[NAME_MAX]; |
45 | char package_url[NAME_MAX]; /* Define to the home page for this package. */ | |
46 | }; | |
47 | ||
48 | /* Strings related to command */ | |
49 | const char * const mi_lttng_element_command; | |
37d03ff7 | 50 | const char * const mi_lttng_element_command_name; |
c7e35b03 | 51 | const char * const mi_lttng_element_command_version; |
89476427 | 52 | const char * const mi_lttng_element_command_enable_event; |
c7e35b03 | 53 | const char * const mi_lttng_element_command_list; |
1734c658 JRJ |
54 | const char * const mi_lttng_element_command_save; |
55 | const char * const mi_lttng_element_command_load; | |
e5b83100 | 56 | const char * const mi_lttng_element_command_stop; |
1cfc0bc8 | 57 | const char * const mi_lttng_element_command_start; |
37d03ff7 | 58 | const char * const mi_lttng_element_command_create; |
65f25c66 | 59 | const char * const mi_lttng_element_command_destroy; |
7e66b1b0 | 60 | const char * const mi_lttng_element_command_calibrate; |
89b72577 | 61 | const char * const mi_lttng_element_command_add_context; |
acc09215 | 62 | const char * const mi_lttng_element_command_enable_channels; |
c7e35b03 | 63 | const char * const mi_lttng_element_command_output; |
1734c658 | 64 | const char * const mi_lttng_element_command_success; |
c7e35b03 | 65 | |
1734c658 | 66 | /* Strings related to version command */ |
c7e35b03 JR |
67 | const char * const mi_lttng_element_version; |
68 | const char * const mi_lttng_element_version_str; | |
69 | const char * const mi_lttng_element_version_web; | |
70 | const char * const mi_lttng_element_version_major; | |
71 | const char * const mi_lttng_element_version_minor; | |
72 | const char * const mi_lttng_element_version_license; | |
314d5222 | 73 | const char * const mi_lttng_element_version_commit; |
c7e35b03 JR |
74 | const char * const mi_lttng_element_version_patch_level; |
75 | const char * const mi_lttng_element_version_description; | |
76 | ||
5e18ec73 JR |
77 | /* String related to a lttng_event_field */ |
78 | const char * const mi_lttng_element_event_field; | |
79 | const char * const mi_lttng_element_event_fields; | |
80 | ||
89b72577 JRJ |
81 | /* String related to lttng_event_context */ |
82 | const char * const mi_lttng_context_type_perf_counter; | |
83 | const char * const mi_lttng_context_type_perf_cpu_counter; | |
84 | const char * const mi_lttng_context_type_perf_thread_counter; | |
85 | ||
86 | /* String related to lttng_event_perf_counter_ctx */ | |
87 | const char * const mi_lttng_element_perf_counter_context; | |
88 | ||
5e18ec73 JR |
89 | /* Strings related to pid */ |
90 | const char * const mi_lttng_element_pids; | |
91 | const char * const mi_lttng_element_pid; | |
92 | const char * const mi_lttng_element_pid_id; | |
93 | ||
1734c658 JRJ |
94 | /* Strings related to save command */ |
95 | const char * const mi_lttng_element_save; | |
96 | ||
97 | /* Strings related to load command */ | |
98 | const char * const mi_lttng_element_load; | |
99 | ||
5e18ec73 JR |
100 | /* General element of mi_lttng */ |
101 | const char * const mi_lttng_element_type_other; | |
102 | const char * const mi_lttng_element_type_integer; | |
103 | const char * const mi_lttng_element_type_enum; | |
104 | const char * const mi_lttng_element_type_float; | |
105 | const char * const mi_lttng_element_type_string; | |
106 | const char * const mi_lttng_element_nowrite; | |
89b72577 | 107 | const char * const mi_lttng_element_success; |
5e18ec73 JR |
108 | |
109 | /* String related to loglevel */ | |
110 | const char * const mi_lttng_loglevel_str_alert; | |
111 | const char * const mi_lttng_loglevel_str_crit; | |
112 | const char * const mi_lttng_loglevel_str_debug; | |
113 | const char * const mi_lttng_loglevel_str_debug_function; | |
114 | const char * const mi_lttng_loglevel_str_debug_line; | |
115 | const char * const mi_lttng_loglevel_str_debug_module; | |
116 | const char * const mi_lttng_loglevel_str_debug_process; | |
117 | const char * const mi_lttng_loglevel_str_debug_program; | |
118 | const char * const mi_lttng_loglevel_str_debug_system; | |
119 | const char * const mi_lttng_loglevel_str_debug_unit; | |
120 | const char * const mi_lttng_loglevel_str_emerg; | |
121 | const char * const mi_lttng_loglevel_str_err; | |
122 | const char * const mi_lttng_loglevel_str_info; | |
123 | const char * const mi_lttng_loglevel_str_notice; | |
124 | const char * const mi_lttng_loglevel_str_unknown; | |
125 | const char * const mi_lttng_loglevel_str_warning; | |
126 | ||
1734c658 | 127 | /* String related to loglevel type */ |
5e18ec73 JR |
128 | const char * const mi_lttng_loglevel_type_all; |
129 | const char * const mi_lttng_loglevel_type_range; | |
130 | const char * const mi_lttng_loglevel_type_single; | |
131 | const char * const mi_lttng_loglevel_type_unknown; | |
132 | ||
7e66b1b0 JRJ |
133 | /* Sting related to lttng_calibrate */ |
134 | const char * const mi_lttng_element_calibrate; | |
135 | const char * const mi_lttng_element_calibrate_function; | |
136 | ||
5e18ec73 JR |
137 | /* Utility string function */ |
138 | const char *mi_lttng_loglevel_string(int value); | |
139 | const char *mi_lttng_logleveltype_string(enum lttng_loglevel_type value); | |
140 | const char *mi_lttng_eventfieldtype_string(enum lttng_event_field_type value); | |
141 | const char *mi_lttng_domaintype_string(enum lttng_domain_type value); | |
142 | const char *mi_lttng_buffertype_string(enum lttng_buffer_type value); | |
7e66b1b0 | 143 | const char *mi_lttng_calibratetype_string(enum lttng_calibrate_type val); |
5e18ec73 | 144 | |
c7e35b03 JR |
145 | /* |
146 | * Create an instance of a machine interface writer. | |
147 | * | |
148 | * fd_output File to which the XML content must be written. The file will be | |
149 | * closed once the mi_writer has been destroyed. | |
150 | * | |
151 | * Returns an instance of a machine interface writer on success, NULL on | |
152 | * error. | |
153 | */ | |
154 | struct mi_writer *mi_lttng_writer_create(int fd_output, int mi_output_type); | |
155 | ||
156 | /* | |
157 | * Destroy an instance of a machine interface writer. | |
158 | * | |
159 | * writer An instance of a machine interface writer. | |
160 | * | |
161 | * Returns zero if the XML document could be closed cleanly. Negative values | |
162 | * indicate an error. | |
163 | */ | |
164 | int mi_lttng_writer_destroy(struct mi_writer *writer); | |
165 | ||
166 | /* | |
167 | * Open a command tag and add it's name node. | |
168 | * | |
169 | * writer An instance of a machine interface writer. | |
c7e35b03 JR |
170 | * command The command name. |
171 | * | |
172 | * Returns zero if the XML document could be closed cleanly. | |
173 | * Negative values indicate an error. | |
174 | */ | |
175 | int mi_lttng_writer_command_open(struct mi_writer *writer, const char *command); | |
176 | ||
177 | /* | |
178 | * Close a command tag. | |
179 | * | |
180 | * writer An instance of a machine interface writer. | |
181 | * | |
182 | * Returns zero if the XML document could be closed cleanly. | |
183 | * Negative values indicate an error. | |
184 | */ | |
185 | int mi_lttng_writer_command_close(struct mi_writer *writer); | |
186 | ||
187 | /* | |
188 | * Open an element tag. | |
189 | * | |
190 | * writer An instance of a machine interface writer. | |
c7e35b03 JR |
191 | * element_name Element tag name. |
192 | * | |
193 | * Returns zero if the XML document could be closed cleanly. | |
194 | * Negative values indicate an error. | |
195 | */ | |
196 | int mi_lttng_writer_open_element(struct mi_writer *writer, | |
197 | const char *element_name); | |
198 | ||
199 | /* | |
200 | * Close the current element tag. | |
201 | * | |
202 | * writer An instance of a machine interface writer. | |
203 | * | |
204 | * Returns zero if the XML document could be closed cleanly. | |
205 | * Negative values indicate an error. | |
206 | */ | |
207 | int mi_lttng_writer_close_element(struct mi_writer *writer); | |
208 | ||
209 | /* | |
5e18ec73 | 210 | * Close multiple element. |
c7e35b03 JR |
211 | * |
212 | * writer An instance of a machine interface writer. | |
5e18ec73 | 213 | * nb_element Number of elements. |
c7e35b03 | 214 | * |
5e18ec73 JR |
215 | * Returns zero if the XML document could be closed cleanly. |
216 | * Negative values indicate an error. | |
217 | */ | |
218 | int mi_lttng_close_multi_element(struct mi_writer *writer, | |
219 | unsigned int nb_element); | |
220 | ||
221 | /* | |
222 | * Write an element of type unsigned int. | |
c7e35b03 | 223 | * |
5e18ec73 JR |
224 | * writer An instance of a machine interface writer. |
225 | * element_name Element name. | |
c7e35b03 JR |
226 | * value Unsigned int value of the element |
227 | * | |
228 | * Returns zero if the element's value could be written. | |
229 | * Negative values indicate an error. | |
230 | */ | |
231 | int mi_lttng_writer_write_element_unsigned_int(struct mi_writer *writer, | |
232 | const char *element_name, uint64_t value); | |
233 | ||
234 | /* | |
235 | * Write an element of type signed int. | |
236 | * | |
237 | * writer An instance of a machine interface writer. | |
c7e35b03 | 238 | * element_name Element name. |
5e18ec73 | 239 | * value Signed int value of the element. |
c7e35b03 JR |
240 | * |
241 | * Returns zero if the element's value could be written. | |
242 | * Negative values indicate an error. | |
243 | */ | |
244 | int mi_lttng_writer_write_element_signed_int(struct mi_writer *writer, | |
245 | const char *element_name, int64_t value); | |
246 | ||
247 | /* | |
248 | * Write an element of type boolean. | |
249 | * | |
250 | * writer An instance of a machine interface writer. | |
c7e35b03 | 251 | * element_name Element name. |
5e18ec73 | 252 | * value Boolean value of the element. |
c7e35b03 JR |
253 | * |
254 | * Returns zero if the element's value could be written. | |
255 | * Negative values indicate an error. | |
256 | */ | |
257 | int mi_lttng_writer_write_element_bool(struct mi_writer *writer, | |
258 | const char *element_name, int value); | |
259 | ||
260 | /* | |
261 | * Write an element of type string. | |
262 | * | |
263 | * writer An instance of a machine interface writer. | |
c7e35b03 | 264 | * element_name Element name. |
5e18ec73 | 265 | * value String value of the element. |
c7e35b03 JR |
266 | * |
267 | * Returns zero if the element's value could be written. | |
268 | * Negative values indicate an error. | |
269 | */ | |
270 | int mi_lttng_writer_write_element_string(struct mi_writer *writer, | |
271 | const char *element_name, const char *value); | |
272 | ||
273 | /* | |
274 | * Machine interface of struct version. | |
275 | * | |
276 | * writer An instance of a machine interface writer. | |
c7e35b03 | 277 | * version Version struct. |
c7e35b03 | 278 | * lttng_description String value of the version description. |
c7e35b03 JR |
279 | * lttng_license String value of the version license. |
280 | * | |
281 | * Returns zero if the element's value could be written. | |
282 | * Negative values indicate an error. | |
283 | */ | |
284 | int mi_lttng_version(struct mi_writer *writer, struct mi_lttng_version *version, | |
285 | const char *lttng_description, const char *lttng_license); | |
286 | ||
287 | /* | |
5e18ec73 | 288 | * Machine interface: open a sessions element. |
c7e35b03 | 289 | * |
5e18ec73 | 290 | * writer An instance of a machine interface writer. |
c7e35b03 | 291 | * |
5e18ec73 JR |
292 | * Returns zero if the element's value could be written. |
293 | * Negative values indicate an error. | |
294 | */ | |
295 | int mi_lttng_sessions_open(struct mi_writer *writer); | |
296 | ||
297 | /* | |
298 | * Machine interface of struct session. | |
c7e35b03 | 299 | * |
5e18ec73 JR |
300 | * writer An instance of a machine interface writer. |
301 | * session An instance of a session. | |
302 | * is_open Defines whether or not the session element shall be closed. | |
303 | * This should be used carefully and the client | |
304 | * must close the session element. | |
305 | * Use case: nested addtionnal information on a session | |
c7e35b03 | 306 | * ex: domain,channel event. |
c7e35b03 JR |
307 | * |
308 | * Returns zero if the element's value could be written. | |
309 | * Negative values indicate an error. | |
310 | */ | |
311 | int mi_lttng_session(struct mi_writer *writer, | |
5e18ec73 JR |
312 | struct lttng_session *session, int is_open); |
313 | ||
314 | /* | |
315 | * Machine interface: open a domains element. | |
316 | * | |
317 | * writer An instance of a machine interface writer. | |
318 | * | |
319 | * Returns zero if the element's value could be written. | |
320 | * Negative values indicate an error. | |
321 | */ | |
322 | int mi_lttng_domains_open(struct mi_writer *writer); | |
323 | ||
324 | /* | |
325 | * Machine interface of struct domain. | |
326 | * | |
327 | * writer An instance of a machine interface writer. | |
328 | * domain An instance of a domain. | |
329 | * | |
330 | * is_open Defines whether or not the session element shall be closed. | |
331 | * This should be used carefully and the client | |
332 | * must close the domain element. | |
333 | * Use case: nested addition information on a domain | |
334 | * ex: channel event. | |
335 | * | |
336 | * Returns zero if the element's value could be written. | |
337 | * Negative values indicate an error. | |
338 | */ | |
339 | int mi_lttng_domain(struct mi_writer *writer, | |
340 | struct lttng_domain *domain, int is_open); | |
341 | ||
342 | /* | |
343 | * Machine interface: open a channels element. | |
344 | * | |
345 | * writer An instance of a machine interface writer. | |
346 | * | |
347 | * Returns zero if the element's value could be written. | |
348 | * Negative values indicate an error. | |
349 | */ | |
350 | int mi_lttng_channels_open(struct mi_writer *writer); | |
351 | ||
352 | /* | |
353 | * Machine interface of struct channel. | |
354 | * | |
355 | * writer An instance of a machine interface writer. | |
356 | * channel An instance of a channel. | |
357 | * | |
358 | * is_open Defines whether or not the session element shall be closed. | |
359 | * This should be used carefully and the client | |
360 | * must close the channel element. | |
361 | * Use case: nested addition information on a channel. | |
362 | * ex: channel event. | |
363 | * | |
364 | * Returns zero if the element's value could be written. | |
365 | * Negative values indicate an error. | |
366 | */ | |
367 | int mi_lttng_channel(struct mi_writer *writer, | |
368 | struct lttng_channel *channel, int is_open); | |
369 | ||
370 | /* | |
371 | * Machine interface of struct channel_attr. | |
372 | * | |
373 | * writer An instance of a machine interface writer. | |
374 | * attr An instance of a channel_attr struct. | |
375 | * | |
376 | * Returns zero if the element's value could be written. | |
377 | * Negative values indicate an error. | |
378 | */ | |
379 | int mi_lttng_channel_attr(struct mi_writer *writer, | |
380 | struct lttng_channel_attr *attr); | |
381 | ||
382 | /* | |
383 | * Machine interface for event common attributes. | |
384 | * | |
385 | * writer An instance of a mi writer. | |
386 | * event single trace event. | |
387 | * | |
388 | * The common attribute are: | |
389 | * - mi event element | |
390 | * - event name | |
391 | * - event type | |
392 | * - enabled tag | |
393 | * - event filter | |
394 | * | |
395 | * Returns zero if the element's value could be written. | |
396 | * Negative values indicate an error. | |
397 | */ | |
398 | int mi_lttng_event_common_attributes(struct mi_writer *writer, | |
399 | struct lttng_event *event); | |
400 | ||
401 | /* | |
402 | * Machine interface for kernel tracepoint event with a loglevel. | |
403 | * | |
404 | * writer An instance of a mi writer. | |
405 | * event single trace event. | |
406 | * | |
407 | * Returns zero if the element's value could be written. | |
408 | * Negative values indicate an error. | |
409 | */ | |
410 | int mi_lttng_event_tracepoint_loglevel(struct mi_writer *writer, | |
411 | struct lttng_event *event); | |
412 | ||
413 | /* | |
414 | * Machine interface for kernel tracepoint event with no loglevel. | |
415 | * | |
416 | * writer An instance of a mi writer. | |
417 | * event single trace event. | |
418 | * | |
419 | * Returns zero if the element's value could be written. | |
420 | * Negative values indicate an error. | |
421 | */ | |
422 | int mi_lttng_event_tracepoint_no_loglevel(struct mi_writer *writer, | |
423 | struct lttng_event *event); | |
424 | ||
425 | /* | |
426 | * Machine interface for kernel function and probe event. | |
427 | * | |
428 | * writer An instance of a mi writer. | |
429 | * event single trace event. | |
430 | * | |
431 | * Returns zero if the element's value could be written. | |
432 | * Negative values indicate an error. | |
433 | */ | |
434 | int mi_lttng_event_function_probe(struct mi_writer *writer, | |
435 | struct lttng_event *event); | |
436 | ||
437 | /* | |
438 | * Machine interface for kernel function entry event. | |
439 | * | |
440 | * writer An instance of a mi writer. | |
441 | * event single trace event. | |
442 | * | |
443 | * Returns zero if the element's value could be written. | |
444 | * Negative values indicate an error. | |
445 | */ | |
446 | int mi_lttng_event_function_entry(struct mi_writer *writer, | |
447 | struct lttng_event *event); | |
448 | ||
449 | /* | |
450 | * Machine interface: open an events element. | |
451 | * | |
452 | * writer An instance of a machine interface writer. | |
453 | * | |
454 | * Returns zero if the element's value could be written. | |
455 | * Negative values indicate an error. | |
456 | */ | |
457 | int mi_lttng_events_open(struct mi_writer *writer); | |
458 | ||
459 | /* | |
460 | * Machine interface for printing an event. | |
461 | * The trace event type currently supported are: | |
462 | * TRACEPOINT, | |
463 | * PROBE, | |
464 | * FUNCTION, | |
465 | * FUNCTION_ENTRY, | |
466 | * SYSCALL | |
467 | * | |
468 | * writer An instance of a mi writer. | |
469 | * event single trace event. | |
470 | * is_open Defines whether or not the session element shall be closed. | |
471 | * This should be used carefully and the client | |
472 | * must close the event element. | |
473 | * Use case: nested additional information | |
474 | * | |
475 | * Returns zero if the element's value could be written. | |
476 | * Negative values indicate an error. | |
477 | */ | |
478 | int mi_lttng_event(struct mi_writer *writer, struct lttng_event *event, | |
479 | int is_open); | |
480 | ||
481 | /* | |
482 | * Machine interface for struct lttng_event_field. | |
483 | * | |
484 | * writer An instance of a mi writer. | |
485 | * field An event_field instance. | |
486 | * | |
487 | * Returns zero if the element's value could be written. | |
488 | * Negative values indicate an error. | |
489 | */ | |
490 | int mi_lttng_event_field(struct mi_writer *writer, | |
491 | struct lttng_event_field *field); | |
492 | ||
493 | /* | |
494 | * Machine interface: open a event_fields element. | |
495 | * | |
496 | * writer An instance of a machine interface writer. | |
497 | * | |
89b72577 | 498 | * Returns zero if the element could be written. |
5e18ec73 JR |
499 | * Negative values indicate an error. |
500 | */ | |
501 | int mi_lttng_event_fields_open(struct mi_writer *writer); | |
502 | ||
503 | /* | |
504 | * Machine interface: open a PIDs element. | |
505 | * | |
506 | * writer An instance of a machine interface writer. | |
507 | * | |
508 | * Returns zero if the element's value could be written. | |
509 | * Negative values indicate an error. | |
510 | */ | |
511 | int mi_lttng_pids_open(struct mi_writer *writer); | |
512 | ||
513 | /* | |
514 | * Machine interface of a PID. | |
515 | * | |
516 | * writer An instance of a machine interface writer. | |
517 | * pid A PID. | |
518 | * | |
519 | * is_open Defines whether or not the session element shall be closed. | |
520 | * This should be used carefully and the client | |
521 | * must close the pid element. | |
522 | * Use case: nested addition information on a domain | |
523 | * ex: channel event. | |
524 | * | |
525 | * Returns zero if the element's value could be written. | |
526 | * Negative values indicate an error. | |
527 | */ | |
528 | int mi_lttng_pid(struct mi_writer *writer, pid_t pid , const char *cmdline, | |
529 | int is_open); | |
c7e35b03 | 530 | |
7e66b1b0 JRJ |
531 | /* |
532 | * Machine interface for struct lttng_calibrate. | |
533 | * | |
534 | * writer An instance of a machine interface writer. | |
535 | * | |
536 | * calibrate A lttng_calibrate instance. | |
537 | * | |
538 | * Returns zero if the element's value could be written. | |
539 | * Negative values indicate an error. | |
540 | */ | |
541 | int mi_lttng_calibrate(struct mi_writer *writer, | |
542 | struct lttng_calibrate *calibrate); | |
543 | ||
89b72577 JRJ |
544 | /* |
545 | * Machine interface of a context. | |
546 | * | |
547 | * writer An instance of a machine interface writer | |
548 | * | |
549 | * context An instance of a lttng_event_context | |
550 | * | |
551 | * is_open Define if we close the context element | |
552 | * This should be used carefully and the client | |
553 | * need to close the context element. | |
554 | * 0-> False | |
555 | * 1-> True | |
556 | * Returns zero if the element's value could be written. | |
557 | * Negative values indicate an error. | |
558 | */ | |
559 | int mi_lttng_context(struct mi_writer *writer, | |
560 | struct lttng_event_context *context, int is_open); | |
561 | ||
562 | /* | |
563 | * Machine interface of a perf_counter_context. | |
564 | * | |
565 | * writer An instance of a machine interface writer | |
566 | * | |
567 | * contest An instance of a lttng_event_perf_counter_ctx | |
568 | * | |
569 | * Returns zero if the element's value could be written. | |
570 | * Negative values indicate an error. | |
571 | */ | |
572 | int mi_lttng_perf_counter_context(struct mi_writer *writer, | |
573 | struct lttng_event_perf_counter_ctx *perf_context); | |
574 | ||
c7e35b03 | 575 | #endif /* _MI_LTTNG_H */ |