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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 | ||
50534d6f JRJ |
29 | /* Don't want to reference snapshot-internal.h here */ |
30 | struct lttng_snapshot_output; | |
31 | ||
c7e35b03 JR |
32 | /* Instance of a machine interface writer. */ |
33 | struct mi_writer { | |
34 | struct config_writer *writer; | |
35 | enum lttng_mi_output_type type; | |
36 | }; | |
37 | ||
38 | /* | |
39 | * Version information for the machine interface. | |
40 | */ | |
41 | struct mi_lttng_version { | |
42 | char version[NAME_MAX]; /* Version number of package */ | |
43 | uint32_t version_major; /* LTTng-Tools major version number */ | |
44 | uint32_t version_minor; /* LTTng-Tools minor version number */ | |
45 | uint32_t version_patchlevel; /* LTTng-Tools patchlevel version number */ | |
314d5222 | 46 | char version_commit[NAME_MAX]; /* Commit hash of the current version */ |
c7e35b03 JR |
47 | char version_name[NAME_MAX]; |
48 | char package_url[NAME_MAX]; /* Define to the home page for this package. */ | |
49 | }; | |
50 | ||
51 | /* Strings related to command */ | |
4965f956 JG |
52 | extern const char * const mi_lttng_element_command; |
53 | extern const char * const mi_lttng_element_command_action; | |
54 | extern const char * const mi_lttng_element_command_add_context; | |
55 | extern const char * const mi_lttng_element_command_calibrate; | |
56 | extern const char * const mi_lttng_element_command_create; | |
57 | extern const char * const mi_lttng_element_command_destroy; | |
58 | extern const char * const mi_lttng_element_command_disable_channel; | |
59 | extern const char * const mi_lttng_element_command_disable_event; | |
60 | extern const char * const mi_lttng_element_command_enable_channels; | |
61 | extern const char * const mi_lttng_element_command_enable_event; | |
62 | extern const char * const mi_lttng_element_command_list; | |
63 | extern const char * const mi_lttng_element_command_load; | |
64 | extern const char * const mi_lttng_element_command_name; | |
65 | extern const char * const mi_lttng_element_command_output; | |
66 | extern const char * const mi_lttng_element_command_save; | |
67 | extern const char * const mi_lttng_element_command_set_session; | |
68 | extern const char * const mi_lttng_element_command_snapshot; | |
69 | extern const char * const mi_lttng_element_command_snapshot_add; | |
70 | extern const char * const mi_lttng_element_command_snapshot_del; | |
71 | extern const char * const mi_lttng_element_command_snapshot_list; | |
72 | extern const char * const mi_lttng_element_command_snapshot_record; | |
73 | extern const char * const mi_lttng_element_command_start; | |
74 | extern const char * const mi_lttng_element_command_stop; | |
75 | extern const char * const mi_lttng_element_command_success; | |
76 | extern const char * const mi_lttng_element_command_track; | |
77 | extern const char * const mi_lttng_element_command_untrack; | |
78 | extern const char * const mi_lttng_element_command_version; | |
c7e35b03 | 79 | |
1734c658 | 80 | /* Strings related to version command */ |
4965f956 JG |
81 | extern const char * const mi_lttng_element_version; |
82 | extern const char * const mi_lttng_element_version_commit; | |
83 | extern const char * const mi_lttng_element_version_description; | |
84 | extern const char * const mi_lttng_element_version_license; | |
85 | extern const char * const mi_lttng_element_version_major; | |
86 | extern const char * const mi_lttng_element_version_minor; | |
87 | extern const char * const mi_lttng_element_version_patch_level; | |
88 | extern const char * const mi_lttng_element_version_str; | |
89 | extern const char * const mi_lttng_element_version_web; | |
c7e35b03 | 90 | |
5e18ec73 | 91 | /* String related to a lttng_event_field */ |
4965f956 JG |
92 | extern const char * const mi_lttng_element_event_field; |
93 | extern const char * const mi_lttng_element_event_fields; | |
5e18ec73 | 94 | |
89b72577 | 95 | /* String related to lttng_event_context */ |
4965f956 JG |
96 | extern const char * const mi_lttng_context_type_perf_counter; |
97 | extern const char * const mi_lttng_context_type_perf_cpu_counter; | |
98 | extern const char * const mi_lttng_context_type_perf_thread_counter; | |
89b72577 JRJ |
99 | |
100 | /* String related to lttng_event_perf_counter_ctx */ | |
4965f956 | 101 | extern const char * const mi_lttng_element_perf_counter_context; |
89b72577 | 102 | |
5e18ec73 | 103 | /* Strings related to pid */ |
ebbf5ab7 JR |
104 | extern const char * const mi_lttng_element_processes; |
105 | extern const char * const mi_lttng_element_process; | |
4965f956 | 106 | extern const char * const mi_lttng_element_pid_id; |
5e18ec73 | 107 | |
1734c658 | 108 | /* Strings related to save command */ |
4965f956 | 109 | extern const char * const mi_lttng_element_save; |
1734c658 JRJ |
110 | |
111 | /* Strings related to load command */ | |
4965f956 | 112 | extern const char * const mi_lttng_element_load; |
1734c658 | 113 | |
5e18ec73 | 114 | /* General element of mi_lttng */ |
4965f956 JG |
115 | extern const char * const mi_lttng_element_empty; |
116 | extern const char * const mi_lttng_element_id; | |
117 | extern const char * const mi_lttng_element_nowrite; | |
118 | extern const char * const mi_lttng_element_success; | |
119 | extern const char * const mi_lttng_element_type_enum; | |
120 | extern const char * const mi_lttng_element_type_float; | |
121 | extern const char * const mi_lttng_element_type_integer; | |
122 | extern const char * const mi_lttng_element_type_other; | |
123 | extern const char * const mi_lttng_element_type_string; | |
5e18ec73 JR |
124 | |
125 | /* String related to loglevel */ | |
4965f956 JG |
126 | extern const char * const mi_lttng_loglevel_str_alert; |
127 | extern const char * const mi_lttng_loglevel_str_crit; | |
128 | extern const char * const mi_lttng_loglevel_str_debug; | |
129 | extern const char * const mi_lttng_loglevel_str_debug_function; | |
130 | extern const char * const mi_lttng_loglevel_str_debug_line; | |
131 | extern const char * const mi_lttng_loglevel_str_debug_module; | |
132 | extern const char * const mi_lttng_loglevel_str_debug_process; | |
133 | extern const char * const mi_lttng_loglevel_str_debug_program; | |
134 | extern const char * const mi_lttng_loglevel_str_debug_system; | |
135 | extern const char * const mi_lttng_loglevel_str_debug_unit; | |
136 | extern const char * const mi_lttng_loglevel_str_emerg; | |
137 | extern const char * const mi_lttng_loglevel_str_err; | |
138 | extern const char * const mi_lttng_loglevel_str_info; | |
139 | extern const char * const mi_lttng_loglevel_str_notice; | |
140 | extern const char * const mi_lttng_loglevel_str_unknown; | |
141 | extern const char * const mi_lttng_loglevel_str_warning; | |
5e18ec73 | 142 | |
136f2f81 | 143 | /* String related to loglevel JUL */ |
4965f956 JG |
144 | extern const char * const mi_lttng_loglevel_str_jul_all; |
145 | extern const char * const mi_lttng_loglevel_str_jul_config; | |
146 | extern const char * const mi_lttng_loglevel_str_jul_fine; | |
147 | extern const char * const mi_lttng_loglevel_str_jul_finer; | |
148 | extern const char * const mi_lttng_loglevel_str_jul_finest; | |
149 | extern const char * const mi_lttng_loglevel_str_jul_info; | |
150 | extern const char * const mi_lttng_loglevel_str_jul_off; | |
151 | extern const char * const mi_lttng_loglevel_str_jul_severe; | |
152 | extern const char * const mi_lttng_loglevel_str_jul_warning; | |
136f2f81 | 153 | |
970d848b | 154 | /* String related to loglevel Log4j */ |
4965f956 JG |
155 | extern const char * const mi_lttng_loglevel_str_log4j_off; |
156 | extern const char * const mi_lttng_loglevel_str_log4j_fatal; | |
157 | extern const char * const mi_lttng_loglevel_str_log4j_error; | |
158 | extern const char * const mi_lttng_loglevel_str_log4j_warn; | |
159 | extern const char * const mi_lttng_loglevel_str_log4j_info; | |
160 | extern const char * const mi_lttng_loglevel_str_log4j_debug; | |
161 | extern const char * const mi_lttng_loglevel_str_log4j_trace; | |
162 | extern const char * const mi_lttng_loglevel_str_log4j_all; | |
970d848b | 163 | |
0e115563 | 164 | /* String related to loglevel Python */ |
4965f956 JG |
165 | extern const char * const mi_lttng_loglevel_str_python_critical; |
166 | extern const char * const mi_lttng_loglevel_str_python_error; | |
167 | extern const char * const mi_lttng_loglevel_str_python_warning; | |
168 | extern const char * const mi_lttng_loglevel_str_python_info; | |
169 | extern const char * const mi_lttng_loglevel_str_python_debug; | |
170 | extern const char * const mi_lttng_loglevel_str_python_notset; | |
0e115563 | 171 | |
1734c658 | 172 | /* String related to loglevel type */ |
4965f956 JG |
173 | extern const char * const mi_lttng_loglevel_type_all; |
174 | extern const char * const mi_lttng_loglevel_type_range; | |
175 | extern const char * const mi_lttng_loglevel_type_single; | |
176 | extern const char * const mi_lttng_loglevel_type_unknown; | |
5e18ec73 | 177 | |
7e66b1b0 | 178 | /* Sting related to lttng_calibrate */ |
4965f956 JG |
179 | extern const char * const mi_lttng_element_calibrate; |
180 | extern const char * const mi_lttng_element_calibrate_function; | |
7e66b1b0 | 181 | |
136f2f81 | 182 | /* String related to a lttng_snapshot */ |
4965f956 JG |
183 | extern const char * const mi_lttng_element_snapshot_ctrl_url; |
184 | extern const char * const mi_lttng_element_snapshot_data_url; | |
185 | extern const char * const mi_lttng_element_snapshot_max_size; | |
186 | extern const char * const mi_lttng_element_snapshot_n_ptr; | |
187 | extern const char * const mi_lttng_element_snapshot_session_name; | |
188 | extern const char * const mi_lttng_element_snapshots; | |
50534d6f | 189 | |
5e18ec73 | 190 | /* Utility string function */ |
970d848b | 191 | const char *mi_lttng_loglevel_string(int value, enum lttng_domain_type domain); |
5e18ec73 JR |
192 | const char *mi_lttng_logleveltype_string(enum lttng_loglevel_type value); |
193 | const char *mi_lttng_eventfieldtype_string(enum lttng_event_field_type value); | |
194 | const char *mi_lttng_domaintype_string(enum lttng_domain_type value); | |
195 | const char *mi_lttng_buffertype_string(enum lttng_buffer_type value); | |
7e66b1b0 | 196 | const char *mi_lttng_calibratetype_string(enum lttng_calibrate_type val); |
5e18ec73 | 197 | |
ebbf5ab7 | 198 | /* String related to track/untrack command */ |
ebbf5ab7 JR |
199 | const char * const mi_lttng_element_track_untrack_all_wildcard; |
200 | ||
c7e35b03 JR |
201 | /* |
202 | * Create an instance of a machine interface writer. | |
203 | * | |
204 | * fd_output File to which the XML content must be written. The file will be | |
205 | * closed once the mi_writer has been destroyed. | |
206 | * | |
207 | * Returns an instance of a machine interface writer on success, NULL on | |
208 | * error. | |
209 | */ | |
210 | struct mi_writer *mi_lttng_writer_create(int fd_output, int mi_output_type); | |
211 | ||
212 | /* | |
213 | * Destroy an instance of a machine interface writer. | |
214 | * | |
215 | * writer An instance of a machine interface writer. | |
216 | * | |
217 | * Returns zero if the XML document could be closed cleanly. Negative values | |
218 | * indicate an error. | |
219 | */ | |
220 | int mi_lttng_writer_destroy(struct mi_writer *writer); | |
221 | ||
222 | /* | |
223 | * Open a command tag and add it's name node. | |
224 | * | |
225 | * writer An instance of a machine interface writer. | |
c7e35b03 JR |
226 | * command The command name. |
227 | * | |
228 | * Returns zero if the XML document could be closed cleanly. | |
229 | * Negative values indicate an error. | |
230 | */ | |
231 | int mi_lttng_writer_command_open(struct mi_writer *writer, const char *command); | |
232 | ||
233 | /* | |
234 | * Close a command tag. | |
235 | * | |
236 | * writer An instance of a machine interface writer. | |
237 | * | |
238 | * Returns zero if the XML document could be closed cleanly. | |
239 | * Negative values indicate an error. | |
240 | */ | |
241 | int mi_lttng_writer_command_close(struct mi_writer *writer); | |
242 | ||
243 | /* | |
244 | * Open an element tag. | |
245 | * | |
246 | * writer An instance of a machine interface writer. | |
c7e35b03 JR |
247 | * element_name Element tag name. |
248 | * | |
249 | * Returns zero if the XML document could be closed cleanly. | |
250 | * Negative values indicate an error. | |
251 | */ | |
252 | int mi_lttng_writer_open_element(struct mi_writer *writer, | |
253 | const char *element_name); | |
254 | ||
255 | /* | |
256 | * Close the current element tag. | |
257 | * | |
258 | * writer An instance of a machine interface writer. | |
259 | * | |
260 | * Returns zero if the XML document could be closed cleanly. | |
261 | * Negative values indicate an error. | |
262 | */ | |
263 | int mi_lttng_writer_close_element(struct mi_writer *writer); | |
264 | ||
265 | /* | |
5e18ec73 | 266 | * Close multiple element. |
c7e35b03 JR |
267 | * |
268 | * writer An instance of a machine interface writer. | |
5e18ec73 | 269 | * nb_element Number of elements. |
c7e35b03 | 270 | * |
5e18ec73 JR |
271 | * Returns zero if the XML document could be closed cleanly. |
272 | * Negative values indicate an error. | |
273 | */ | |
274 | int mi_lttng_close_multi_element(struct mi_writer *writer, | |
275 | unsigned int nb_element); | |
276 | ||
277 | /* | |
278 | * Write an element of type unsigned int. | |
c7e35b03 | 279 | * |
5e18ec73 JR |
280 | * writer An instance of a machine interface writer. |
281 | * element_name Element name. | |
c7e35b03 JR |
282 | * value Unsigned int value of the element |
283 | * | |
284 | * Returns zero if the element's value could be written. | |
285 | * Negative values indicate an error. | |
286 | */ | |
287 | int mi_lttng_writer_write_element_unsigned_int(struct mi_writer *writer, | |
288 | const char *element_name, uint64_t value); | |
289 | ||
290 | /* | |
291 | * Write an element of type signed int. | |
292 | * | |
293 | * writer An instance of a machine interface writer. | |
c7e35b03 | 294 | * element_name Element name. |
5e18ec73 | 295 | * value Signed int value of the element. |
c7e35b03 JR |
296 | * |
297 | * Returns zero if the element's value could be written. | |
298 | * Negative values indicate an error. | |
299 | */ | |
300 | int mi_lttng_writer_write_element_signed_int(struct mi_writer *writer, | |
301 | const char *element_name, int64_t value); | |
302 | ||
303 | /* | |
304 | * Write an element of type boolean. | |
305 | * | |
306 | * writer An instance of a machine interface writer. | |
c7e35b03 | 307 | * element_name Element name. |
5e18ec73 | 308 | * value Boolean value of the element. |
c7e35b03 JR |
309 | * |
310 | * Returns zero if the element's value could be written. | |
311 | * Negative values indicate an error. | |
312 | */ | |
313 | int mi_lttng_writer_write_element_bool(struct mi_writer *writer, | |
314 | const char *element_name, int value); | |
315 | ||
316 | /* | |
317 | * Write an element of type string. | |
318 | * | |
319 | * writer An instance of a machine interface writer. | |
c7e35b03 | 320 | * element_name Element name. |
5e18ec73 | 321 | * value String value of the element. |
c7e35b03 JR |
322 | * |
323 | * Returns zero if the element's value could be written. | |
324 | * Negative values indicate an error. | |
325 | */ | |
326 | int mi_lttng_writer_write_element_string(struct mi_writer *writer, | |
327 | const char *element_name, const char *value); | |
328 | ||
329 | /* | |
330 | * Machine interface of struct version. | |
331 | * | |
332 | * writer An instance of a machine interface writer. | |
c7e35b03 | 333 | * version Version struct. |
c7e35b03 | 334 | * lttng_description String value of the version description. |
c7e35b03 JR |
335 | * lttng_license String value of the version license. |
336 | * | |
337 | * Returns zero if the element's value could be written. | |
338 | * Negative values indicate an error. | |
339 | */ | |
340 | int mi_lttng_version(struct mi_writer *writer, struct mi_lttng_version *version, | |
341 | const char *lttng_description, const char *lttng_license); | |
342 | ||
343 | /* | |
5e18ec73 | 344 | * Machine interface: open a sessions element. |
c7e35b03 | 345 | * |
5e18ec73 | 346 | * writer An instance of a machine interface writer. |
c7e35b03 | 347 | * |
5e18ec73 JR |
348 | * Returns zero if the element's value could be written. |
349 | * Negative values indicate an error. | |
350 | */ | |
351 | int mi_lttng_sessions_open(struct mi_writer *writer); | |
352 | ||
353 | /* | |
354 | * Machine interface of struct session. | |
c7e35b03 | 355 | * |
5e18ec73 JR |
356 | * writer An instance of a machine interface writer. |
357 | * session An instance of a session. | |
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 session element. | |
136f2f81 | 361 | * Use case: nested additional information on a session |
c7e35b03 | 362 | * ex: domain,channel event. |
c7e35b03 JR |
363 | * |
364 | * Returns zero if the element's value could be written. | |
365 | * Negative values indicate an error. | |
366 | */ | |
367 | int mi_lttng_session(struct mi_writer *writer, | |
5e18ec73 JR |
368 | struct lttng_session *session, int is_open); |
369 | ||
370 | /* | |
371 | * Machine interface: open a domains element. | |
372 | * | |
373 | * writer An instance of a machine interface writer. | |
374 | * | |
375 | * Returns zero if the element's value could be written. | |
376 | * Negative values indicate an error. | |
377 | */ | |
378 | int mi_lttng_domains_open(struct mi_writer *writer); | |
379 | ||
380 | /* | |
381 | * Machine interface of struct domain. | |
382 | * | |
383 | * writer An instance of a machine interface writer. | |
384 | * domain An instance of a domain. | |
385 | * | |
386 | * is_open Defines whether or not the session element shall be closed. | |
387 | * This should be used carefully and the client | |
388 | * must close the domain element. | |
389 | * Use case: nested addition information on a domain | |
390 | * ex: channel event. | |
391 | * | |
392 | * Returns zero if the element's value could be written. | |
393 | * Negative values indicate an error. | |
394 | */ | |
395 | int mi_lttng_domain(struct mi_writer *writer, | |
396 | struct lttng_domain *domain, int is_open); | |
397 | ||
398 | /* | |
399 | * Machine interface: open a channels element. | |
400 | * | |
401 | * writer An instance of a machine interface writer. | |
402 | * | |
403 | * Returns zero if the element's value could be written. | |
404 | * Negative values indicate an error. | |
405 | */ | |
406 | int mi_lttng_channels_open(struct mi_writer *writer); | |
407 | ||
408 | /* | |
409 | * Machine interface of struct channel. | |
410 | * | |
411 | * writer An instance of a machine interface writer. | |
412 | * channel An instance of a channel. | |
413 | * | |
414 | * is_open Defines whether or not the session element shall be closed. | |
415 | * This should be used carefully and the client | |
416 | * must close the channel element. | |
417 | * Use case: nested addition information on a channel. | |
418 | * ex: channel event. | |
419 | * | |
420 | * Returns zero if the element's value could be written. | |
421 | * Negative values indicate an error. | |
422 | */ | |
423 | int mi_lttng_channel(struct mi_writer *writer, | |
424 | struct lttng_channel *channel, int is_open); | |
425 | ||
426 | /* | |
427 | * Machine interface of struct channel_attr. | |
428 | * | |
429 | * writer An instance of a machine interface writer. | |
430 | * attr An instance of a channel_attr struct. | |
431 | * | |
432 | * Returns zero if the element's value could be written. | |
433 | * Negative values indicate an error. | |
434 | */ | |
435 | int mi_lttng_channel_attr(struct mi_writer *writer, | |
436 | struct lttng_channel_attr *attr); | |
437 | ||
438 | /* | |
439 | * Machine interface for event common attributes. | |
440 | * | |
441 | * writer An instance of a mi writer. | |
442 | * event single trace event. | |
443 | * | |
444 | * The common attribute are: | |
445 | * - mi event element | |
446 | * - event name | |
447 | * - event type | |
448 | * - enabled tag | |
449 | * - event filter | |
450 | * | |
451 | * Returns zero if the element's value could be written. | |
452 | * Negative values indicate an error. | |
453 | */ | |
454 | int mi_lttng_event_common_attributes(struct mi_writer *writer, | |
455 | struct lttng_event *event); | |
456 | ||
457 | /* | |
458 | * Machine interface for kernel tracepoint event with a loglevel. | |
459 | * | |
460 | * writer An instance of a mi writer. | |
461 | * event single trace event. | |
970d848b | 462 | * domain Event's domain |
5e18ec73 JR |
463 | * |
464 | * Returns zero if the element's value could be written. | |
465 | * Negative values indicate an error. | |
466 | */ | |
467 | int mi_lttng_event_tracepoint_loglevel(struct mi_writer *writer, | |
970d848b | 468 | struct lttng_event *event, enum lttng_domain_type domain); |
5e18ec73 JR |
469 | |
470 | /* | |
471 | * Machine interface for kernel tracepoint event with no loglevel. | |
472 | * | |
473 | * writer An instance of a mi writer. | |
474 | * event single trace event. | |
475 | * | |
476 | * Returns zero if the element's value could be written. | |
477 | * Negative values indicate an error. | |
478 | */ | |
479 | int mi_lttng_event_tracepoint_no_loglevel(struct mi_writer *writer, | |
480 | struct lttng_event *event); | |
481 | ||
482 | /* | |
483 | * Machine interface for kernel function and probe event. | |
484 | * | |
485 | * writer An instance of a mi writer. | |
486 | * event single trace event. | |
487 | * | |
488 | * Returns zero if the element's value could be written. | |
489 | * Negative values indicate an error. | |
490 | */ | |
491 | int mi_lttng_event_function_probe(struct mi_writer *writer, | |
492 | struct lttng_event *event); | |
493 | ||
494 | /* | |
495 | * Machine interface for kernel function entry event. | |
496 | * | |
497 | * writer An instance of a mi writer. | |
498 | * event single trace event. | |
499 | * | |
500 | * Returns zero if the element's value could be written. | |
501 | * Negative values indicate an error. | |
502 | */ | |
503 | int mi_lttng_event_function_entry(struct mi_writer *writer, | |
504 | struct lttng_event *event); | |
505 | ||
506 | /* | |
507 | * Machine interface: open an events element. | |
508 | * | |
509 | * writer An instance of a machine interface writer. | |
510 | * | |
511 | * Returns zero if the element's value could be written. | |
512 | * Negative values indicate an error. | |
513 | */ | |
514 | int mi_lttng_events_open(struct mi_writer *writer); | |
515 | ||
516 | /* | |
517 | * Machine interface for printing an event. | |
518 | * The trace event type currently supported are: | |
519 | * TRACEPOINT, | |
520 | * PROBE, | |
521 | * FUNCTION, | |
522 | * FUNCTION_ENTRY, | |
523 | * SYSCALL | |
524 | * | |
525 | * writer An instance of a mi writer. | |
526 | * event single trace event. | |
527 | * is_open Defines whether or not the session element shall be closed. | |
528 | * This should be used carefully and the client | |
529 | * must close the event element. | |
530 | * Use case: nested additional information | |
970d848b | 531 | * domain Event's domain |
5e18ec73 JR |
532 | * |
533 | * Returns zero if the element's value could be written. | |
534 | * Negative values indicate an error. | |
535 | */ | |
536 | int mi_lttng_event(struct mi_writer *writer, struct lttng_event *event, | |
970d848b | 537 | int is_open, enum lttng_domain_type domain); |
5e18ec73 JR |
538 | |
539 | /* | |
540 | * Machine interface for struct lttng_event_field. | |
541 | * | |
542 | * writer An instance of a mi writer. | |
543 | * field An event_field instance. | |
544 | * | |
545 | * Returns zero if the element's value could be written. | |
546 | * Negative values indicate an error. | |
547 | */ | |
548 | int mi_lttng_event_field(struct mi_writer *writer, | |
549 | struct lttng_event_field *field); | |
550 | ||
551 | /* | |
552 | * Machine interface: open a event_fields element. | |
553 | * | |
554 | * writer An instance of a machine interface writer. | |
555 | * | |
e4d484a5 | 556 | * Returns zero if the element have be written. |
5e18ec73 JR |
557 | * Negative values indicate an error. |
558 | */ | |
559 | int mi_lttng_event_fields_open(struct mi_writer *writer); | |
560 | ||
ebbf5ab7 JR |
561 | /* |
562 | * Machine interface: open a trackers element. | |
563 | * | |
564 | * writer An instance of a machine interface writer. | |
565 | * | |
566 | * Returns zero if the element's value could be written. | |
567 | * Negative values indicate an error. | |
568 | */ | |
569 | int mi_lttng_trackers_open(struct mi_writer *writer); | |
570 | ||
571 | /* | |
572 | * Machine interface: open a pid_tracker element. | |
573 | * | |
574 | * writer An instance of a machine interface writer. | |
575 | * | |
576 | * Returns zero if the element's value could be written. | |
577 | * Negative values indicate an error. | |
578 | * | |
579 | * Note: A targets element is also opened for each tracker definition | |
580 | */ | |
581 | int mi_lttng_pid_tracker_open(struct mi_writer *writer); | |
582 | ||
5e18ec73 JR |
583 | /* |
584 | * Machine interface: open a PIDs element. | |
585 | * | |
586 | * writer An instance of a machine interface writer. | |
587 | * | |
588 | * Returns zero if the element's value could be written. | |
589 | * Negative values indicate an error. | |
590 | */ | |
591 | int mi_lttng_pids_open(struct mi_writer *writer); | |
592 | ||
593 | /* | |
ebbf5ab7 JR |
594 | * Machine interface: open a processes element. |
595 | * | |
596 | * writer An instance of a machine interface writer. | |
597 | * | |
598 | * Returns zero if the element's value could be written. | |
599 | * Negative values indicate an error. | |
600 | */ | |
601 | int mi_lttng_processes_open(struct mi_writer *writer); | |
602 | ||
603 | /* | |
604 | * Machine interface of a Process. | |
5e18ec73 JR |
605 | * |
606 | * writer An instance of a machine interface writer. | |
607 | * pid A PID. | |
608 | * | |
609 | * is_open Defines whether or not the session element shall be closed. | |
610 | * This should be used carefully and the client | |
611 | * must close the pid element. | |
612 | * Use case: nested addition information on a domain | |
613 | * ex: channel event. | |
614 | * | |
615 | * Returns zero if the element's value could be written. | |
616 | * Negative values indicate an error. | |
617 | */ | |
ebbf5ab7 | 618 | int mi_lttng_process(struct mi_writer *writer, pid_t pid , const char *name, |
5e18ec73 | 619 | int is_open); |
ebbf5ab7 JR |
620 | /* |
621 | * Machine interface: open a targets element. | |
622 | * | |
623 | * writer An instance of a machine interface writer. | |
624 | * | |
625 | * Returns zero if the element's value could be written. | |
626 | * Negative values indicate an error. | |
627 | */ | |
628 | int mi_lttng_targets_open(struct mi_writer *writer); | |
629 | ||
630 | /* | |
631 | * Machine interface for track/untrack a pid_target | |
632 | * | |
633 | * writer An instance of a machine interface writer. | |
634 | * | |
635 | * Returns zero if the element's value could be written. | |
636 | * Negative values indicate an error. | |
637 | */ | |
638 | int mi_lttng_pid_target(struct mi_writer *writer, pid_t pid, int is_open); | |
c7e35b03 | 639 | |
7e66b1b0 JRJ |
640 | /* |
641 | * Machine interface for struct lttng_calibrate. | |
642 | * | |
643 | * writer An instance of a machine interface writer. | |
644 | * | |
645 | * calibrate A lttng_calibrate instance. | |
646 | * | |
647 | * Returns zero if the element's value could be written. | |
648 | * Negative values indicate an error. | |
649 | */ | |
650 | int mi_lttng_calibrate(struct mi_writer *writer, | |
651 | struct lttng_calibrate *calibrate); | |
652 | ||
89b72577 JRJ |
653 | /* |
654 | * Machine interface of a context. | |
655 | * | |
656 | * writer An instance of a machine interface writer | |
657 | * | |
658 | * context An instance of a lttng_event_context | |
659 | * | |
660 | * is_open Define if we close the context element | |
661 | * This should be used carefully and the client | |
662 | * need to close the context element. | |
89b72577 JRJ |
663 | * Returns zero if the element's value could be written. |
664 | * Negative values indicate an error. | |
665 | */ | |
666 | int mi_lttng_context(struct mi_writer *writer, | |
667 | struct lttng_event_context *context, int is_open); | |
668 | ||
669 | /* | |
670 | * Machine interface of a perf_counter_context. | |
671 | * | |
672 | * writer An instance of a machine interface writer | |
673 | * | |
674 | * contest An instance of a lttng_event_perf_counter_ctx | |
675 | * | |
676 | * Returns zero if the element's value could be written. | |
677 | * Negative values indicate an error. | |
678 | */ | |
679 | int mi_lttng_perf_counter_context(struct mi_writer *writer, | |
680 | struct lttng_event_perf_counter_ctx *perf_context); | |
681 | ||
50534d6f JRJ |
682 | /* |
683 | * Machine interface of the snapshot list_output. | |
684 | * It specifies the session for which we are listing snapshots, | |
685 | * and it opens a snapshots element to list a sequence | |
686 | * of snapshots. | |
687 | * | |
688 | * writer An instance of a machine interface writer. | |
689 | * | |
690 | * session_name: Snapshot output for session "session_name". | |
691 | * | |
692 | * Note: The client has to close the session and the snapshots elements after | |
693 | * having listed every lttng_snapshot_output. | |
694 | * | |
695 | * Returns zero if the element's value could be written. | |
696 | * Negative values indicate an error. | |
697 | */ | |
698 | int mi_lttng_snapshot_output_session_name(struct mi_writer *writer, | |
699 | const char *session_name); | |
700 | ||
701 | /* | |
702 | * Machine interface of the snapshot output. | |
703 | * The machine interface serializes the following attributes: | |
704 | * - id: ID of the snapshot output. | |
705 | * - name: Name of the output. | |
706 | * - data_url : Destination of the output. | |
707 | * - ctrl_url: Destination of the output. | |
708 | * - max_size: total size of all stream combined. | |
709 | * | |
710 | * writer An instance of a machine interface writer. | |
711 | * | |
712 | * output: A list of snapshot_output. | |
713 | * | |
714 | * Returns zero if the element's value could be written. | |
715 | * Negative values indicate an error. | |
716 | */ | |
717 | int mi_lttng_snapshot_list_output(struct mi_writer *writer, | |
718 | struct lttng_snapshot_output *output); | |
719 | ||
720 | /* | |
721 | * Machine interface of the output of the command snapshot del output | |
722 | * when deleting a snapshot either by id or by name. | |
723 | * If the snapshot was found and successfully deleted using its id, | |
724 | * it return the id of the snapshot and the current session name on which it | |
725 | * was attached. | |
726 | * | |
727 | * Otherwise, it do the same process with the name of the snapshot, if the | |
728 | * snapshot output id is undefined. | |
729 | * | |
730 | * writer An instance of a machine interface writer. | |
731 | * | |
732 | * id: ID of the snapshot output. | |
733 | * | |
734 | * name: Name of the snapshot. | |
735 | * | |
736 | * current_session_name: Session to which the snapshot belongs. | |
737 | * | |
738 | * Returns zero if the element's value could be written. | |
739 | * Negative values indicate an error. | |
740 | */ | |
741 | int mi_lttng_snapshot_del_output(struct mi_writer *writer, int id, | |
742 | const char *name, const char *current_session_name); | |
743 | ||
744 | /* | |
745 | * Machine interface of the output of the command snapshot add output | |
746 | * when adding a snapshot from a user URL. | |
747 | * | |
748 | * If the snapshot was successfully added, the machine interface lists | |
749 | * these information: | |
750 | * - id: ID of the newly add snapshot output. | |
751 | * - current_session_name: Name of the session to which the output was added. | |
752 | * - ctrl_url: Destination of the output. | |
753 | * - max_size: total size of all stream combined. | |
754 | * | |
755 | * writer An instance of a machine interface writer. | |
756 | * | |
757 | * current_session_name: Session to which the snapshot belongs. | |
758 | * | |
759 | * n_ptr: | |
760 | * | |
761 | * output: iterator over a lttng_snapshot_output_list which contain | |
762 | * the snapshot output informations. | |
763 | * | |
764 | * Returns zero if the element's value could be written. | |
765 | * Negative values indicate an error. | |
766 | */ | |
767 | int mi_lttng_snapshot_add_output(struct mi_writer *writer, | |
768 | const char *current_session_name, const char *n_ptr, | |
769 | struct lttng_snapshot_output *output); | |
770 | ||
771 | /* | |
772 | * Machine interface of the output of the command snapshot | |
773 | * record from a URL (if given). | |
774 | * | |
775 | * If the snapshot is successfully recorded from a url, the machine interface | |
776 | * output the following information: | |
777 | * - url: Destination of the output stored in the snapshot. | |
778 | * | |
779 | * Otherwise, the machine interface output the data and ctrl url received | |
780 | * from the command-line. | |
781 | * | |
782 | * writer An instance of a machine interface writer. | |
783 | * | |
784 | * current_session_name: Snapshot record for session "current_session_name". | |
785 | * | |
786 | * ctrl_url, data_url: Destination of the output receive from the command-line. | |
787 | * | |
788 | * Returns zero if the element's value could be written. | |
789 | * Negative values indicate an error. | |
790 | */ | |
791 | int mi_lttng_snapshot_record(struct mi_writer *writer, | |
792 | const char *current_session_name, const char *url, | |
793 | const char *cmdline_ctrl_url, const char *cmdline_data_url); | |
794 | ||
c7e35b03 | 795 | #endif /* _MI_LTTNG_H */ |