Tests: test_exclusion: exclusion after tracing active
[lttng-tools.git] / src / common / mi-lttng.h
CommitLineData
c7e35b03 1/*
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2 * Copyright (C) 2014 Jonathan Rajotte <jonathan.r.julien@gmail.com>
3 * Copyright (C) 2014 Olivier Cotte <olivier.cotte@polymtl.ca>
4 * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
c7e35b03 5 *
ab5be9fa 6 * SPDX-License-Identifier: GPL-2.0-only
c7e35b03 7 *
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8 */
9
10#ifndef _MI_LTTNG_H
11#define _MI_LTTNG_H
12
13#include <stdint.h>
14
15#include <common/error.h>
16#include <common/macros.h>
f40ef1d5 17#include <common/config/session-config.h>
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18#include <lttng/lttng.h>
19
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20/* Don't want to reference snapshot-internal.h here */
21struct lttng_snapshot_output;
22
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23/* Instance of a machine interface writer. */
24struct mi_writer {
25 struct config_writer *writer;
26 enum lttng_mi_output_type type;
27};
28
29/*
30 * Version information for the machine interface.
31 */
32struct mi_lttng_version {
36d2e35d 33 char version[LTTNG_NAME_MAX]; /* Version number of package */
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34 uint32_t version_major; /* LTTng-Tools major version number */
35 uint32_t version_minor; /* LTTng-Tools minor version number */
36 uint32_t version_patchlevel; /* LTTng-Tools patchlevel version number */
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37 char version_commit[LTTNG_NAME_MAX]; /* Commit hash of the current version */
38 char version_name[LTTNG_NAME_MAX];
39 char package_url[LTTNG_NAME_MAX]; /* Define to the home page for this package. */
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40};
41
42/* Strings related to command */
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43extern const char * const mi_lttng_element_command;
44extern const char * const mi_lttng_element_command_action;
45extern const char * const mi_lttng_element_command_add_context;
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46extern const char * const mi_lttng_element_command_create;
47extern const char * const mi_lttng_element_command_destroy;
48extern const char * const mi_lttng_element_command_disable_channel;
49extern const char * const mi_lttng_element_command_disable_event;
50extern const char * const mi_lttng_element_command_enable_channels;
51extern const char * const mi_lttng_element_command_enable_event;
52extern const char * const mi_lttng_element_command_list;
53extern const char * const mi_lttng_element_command_load;
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54extern const char * const mi_lttng_element_command_metadata;
55extern const char * const mi_lttng_element_command_metadata_action;
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56extern const char * const mi_lttng_element_command_regenerate;
57extern const char * const mi_lttng_element_command_regenerate_action;
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58extern const char * const mi_lttng_element_command_name;
59extern const char * const mi_lttng_element_command_output;
60extern const char * const mi_lttng_element_command_save;
61extern const char * const mi_lttng_element_command_set_session;
62extern const char * const mi_lttng_element_command_snapshot;
63extern const char * const mi_lttng_element_command_snapshot_add;
64extern const char * const mi_lttng_element_command_snapshot_del;
65extern const char * const mi_lttng_element_command_snapshot_list;
66extern const char * const mi_lttng_element_command_snapshot_record;
67extern const char * const mi_lttng_element_command_start;
68extern const char * const mi_lttng_element_command_stop;
69extern const char * const mi_lttng_element_command_success;
70extern const char * const mi_lttng_element_command_track;
71extern const char * const mi_lttng_element_command_untrack;
72extern const char * const mi_lttng_element_command_version;
d68c9a04 73extern const char * const mi_lttng_element_command_rotate;
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74extern const char * const mi_lttng_element_command_enable_rotation;
75extern const char * const mi_lttng_element_command_disable_rotation;
511ed4e2 76extern const char * const mi_lttng_element_command_clear;
c7e35b03 77
1734c658 78/* Strings related to version command */
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79extern const char * const mi_lttng_element_version;
80extern const char * const mi_lttng_element_version_commit;
81extern const char * const mi_lttng_element_version_description;
82extern const char * const mi_lttng_element_version_license;
83extern const char * const mi_lttng_element_version_major;
84extern const char * const mi_lttng_element_version_minor;
85extern const char * const mi_lttng_element_version_patch_level;
86extern const char * const mi_lttng_element_version_str;
87extern const char * const mi_lttng_element_version_web;
c7e35b03 88
5e18ec73 89/* String related to a lttng_event_field */
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90extern const char * const mi_lttng_element_event_field;
91extern const char * const mi_lttng_element_event_fields;
5e18ec73 92
89b72577 93/* String related to lttng_event_perf_counter_ctx */
4965f956 94extern const char * const mi_lttng_element_perf_counter_context;
89b72577 95
5e18ec73 96/* Strings related to pid */
4965f956 97extern const char * const mi_lttng_element_pid_id;
5e18ec73 98
1734c658 99/* Strings related to save command */
4965f956 100extern const char * const mi_lttng_element_save;
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101
102/* Strings related to load command */
4965f956 103extern const char * const mi_lttng_element_load;
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104LTTNG_HIDDEN extern const char * const mi_lttng_element_load_overrides;
105LTTNG_HIDDEN extern const char * const mi_lttng_element_load_override_url;
1734c658 106
5e18ec73 107/* General element of mi_lttng */
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108extern const char * const mi_lttng_element_empty;
109extern const char * const mi_lttng_element_id;
110extern const char * const mi_lttng_element_nowrite;
111extern const char * const mi_lttng_element_success;
112extern const char * const mi_lttng_element_type_enum;
113extern const char * const mi_lttng_element_type_float;
114extern const char * const mi_lttng_element_type_integer;
115extern const char * const mi_lttng_element_type_other;
116extern const char * const mi_lttng_element_type_string;
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117
118/* String related to loglevel */
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119extern const char * const mi_lttng_loglevel_str_alert;
120extern const char * const mi_lttng_loglevel_str_crit;
121extern const char * const mi_lttng_loglevel_str_debug;
122extern const char * const mi_lttng_loglevel_str_debug_function;
123extern const char * const mi_lttng_loglevel_str_debug_line;
124extern const char * const mi_lttng_loglevel_str_debug_module;
125extern const char * const mi_lttng_loglevel_str_debug_process;
126extern const char * const mi_lttng_loglevel_str_debug_program;
127extern const char * const mi_lttng_loglevel_str_debug_system;
128extern const char * const mi_lttng_loglevel_str_debug_unit;
129extern const char * const mi_lttng_loglevel_str_emerg;
130extern const char * const mi_lttng_loglevel_str_err;
131extern const char * const mi_lttng_loglevel_str_info;
132extern const char * const mi_lttng_loglevel_str_notice;
133extern const char * const mi_lttng_loglevel_str_unknown;
134extern const char * const mi_lttng_loglevel_str_warning;
5e18ec73 135
136f2f81 136/* String related to loglevel JUL */
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137extern const char * const mi_lttng_loglevel_str_jul_all;
138extern const char * const mi_lttng_loglevel_str_jul_config;
139extern const char * const mi_lttng_loglevel_str_jul_fine;
140extern const char * const mi_lttng_loglevel_str_jul_finer;
141extern const char * const mi_lttng_loglevel_str_jul_finest;
142extern const char * const mi_lttng_loglevel_str_jul_info;
143extern const char * const mi_lttng_loglevel_str_jul_off;
144extern const char * const mi_lttng_loglevel_str_jul_severe;
145extern const char * const mi_lttng_loglevel_str_jul_warning;
136f2f81 146
970d848b 147/* String related to loglevel Log4j */
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148extern const char * const mi_lttng_loglevel_str_log4j_off;
149extern const char * const mi_lttng_loglevel_str_log4j_fatal;
150extern const char * const mi_lttng_loglevel_str_log4j_error;
151extern const char * const mi_lttng_loglevel_str_log4j_warn;
152extern const char * const mi_lttng_loglevel_str_log4j_info;
153extern const char * const mi_lttng_loglevel_str_log4j_debug;
154extern const char * const mi_lttng_loglevel_str_log4j_trace;
155extern const char * const mi_lttng_loglevel_str_log4j_all;
970d848b 156
0e115563 157/* String related to loglevel Python */
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158extern const char * const mi_lttng_loglevel_str_python_critical;
159extern const char * const mi_lttng_loglevel_str_python_error;
160extern const char * const mi_lttng_loglevel_str_python_warning;
161extern const char * const mi_lttng_loglevel_str_python_info;
162extern const char * const mi_lttng_loglevel_str_python_debug;
163extern const char * const mi_lttng_loglevel_str_python_notset;
0e115563 164
1734c658 165/* String related to loglevel type */
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166extern const char * const mi_lttng_loglevel_type_all;
167extern const char * const mi_lttng_loglevel_type_range;
168extern const char * const mi_lttng_loglevel_type_single;
169extern const char * const mi_lttng_loglevel_type_unknown;
5e18ec73 170
136f2f81 171/* String related to a lttng_snapshot */
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172extern const char * const mi_lttng_element_snapshot_ctrl_url;
173extern const char * const mi_lttng_element_snapshot_data_url;
174extern const char * const mi_lttng_element_snapshot_max_size;
175extern const char * const mi_lttng_element_snapshot_n_ptr;
176extern const char * const mi_lttng_element_snapshot_session_name;
177extern const char * const mi_lttng_element_snapshots;
50534d6f 178
a23cb78a 179/* String related to track/untrack command */
44cdb3a2 180extern const char * const mi_lttng_element_track_untrack_all_wildcard;
a23cb78a 181
44cdb3a2 182LTTNG_HIDDEN extern const char * const mi_lttng_element_session_name;
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183
184/* String related to rotate command */
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185LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation;
186LTTNG_HIDDEN extern const char * const mi_lttng_element_rotate_status;
187LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule;
188LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedules;
189LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_periodic;
190LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_periodic_time_us;
191LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_size_threshold;
192LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_size_threshold_bytes;
193LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_result;
194LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_schedule_results;
195LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_state;
196LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location;
197LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_local;
198LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_local_absolute_path;
199LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay;
200LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay_host;
201LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay_control_port;
202LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay_data_port;
203LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay_protocol;
204LTTNG_HIDDEN extern const char * const mi_lttng_element_rotation_location_relay_relative_path;
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205
206/* String related to enum lttng_rotation_state */
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207LTTNG_HIDDEN extern const char * const mi_lttng_rotation_state_str_ongoing;
208LTTNG_HIDDEN extern const char * const mi_lttng_rotation_state_str_completed;
209LTTNG_HIDDEN extern const char * const mi_lttng_rotation_state_str_expired;
210LTTNG_HIDDEN extern const char * const mi_lttng_rotation_state_str_error;
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211
212/* String related to enum lttng_trace_archive_location_relay_protocol_type */
44cdb3a2 213LTTNG_HIDDEN extern const char * const mi_lttng_rotation_location_relay_protocol_str_tcp;
d68c9a04 214
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215/* String related to add-context command */
216LTTNG_HIDDEN extern const char * const mi_lttng_element_context_symbol;
217
5e18ec73 218/* Utility string function */
970d848b 219const char *mi_lttng_loglevel_string(int value, enum lttng_domain_type domain);
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220const char *mi_lttng_logleveltype_string(enum lttng_loglevel_type value);
221const char *mi_lttng_eventfieldtype_string(enum lttng_event_field_type value);
222const char *mi_lttng_domaintype_string(enum lttng_domain_type value);
223const char *mi_lttng_buffertype_string(enum lttng_buffer_type value);
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224const char *mi_lttng_rotation_state_string(enum lttng_rotation_state value);
225const char *mi_lttng_trace_archive_location_relay_protocol_type_string(
226 enum lttng_trace_archive_location_relay_protocol_type value);
5e18ec73 227
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228/*
229 * Create an instance of a machine interface writer.
230 *
231 * fd_output File to which the XML content must be written. The file will be
232 * closed once the mi_writer has been destroyed.
233 *
234 * Returns an instance of a machine interface writer on success, NULL on
235 * error.
236 */
237struct mi_writer *mi_lttng_writer_create(int fd_output, int mi_output_type);
238
239/*
240 * Destroy an instance of a machine interface writer.
241 *
242 * writer An instance of a machine interface writer.
243 *
244 * Returns zero if the XML document could be closed cleanly. Negative values
245 * indicate an error.
246 */
247int mi_lttng_writer_destroy(struct mi_writer *writer);
248
249/*
250 * Open a command tag and add it's name node.
251 *
252 * writer An instance of a machine interface writer.
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253 * command The command name.
254 *
255 * Returns zero if the XML document could be closed cleanly.
256 * Negative values indicate an error.
257 */
258int mi_lttng_writer_command_open(struct mi_writer *writer, const char *command);
259
260/*
261 * Close a command tag.
262 *
263 * writer An instance of a machine interface writer.
264 *
265 * Returns zero if the XML document could be closed cleanly.
266 * Negative values indicate an error.
267 */
268int mi_lttng_writer_command_close(struct mi_writer *writer);
269
270/*
271 * Open an element tag.
272 *
273 * writer An instance of a machine interface writer.
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274 * element_name Element tag name.
275 *
276 * Returns zero if the XML document could be closed cleanly.
277 * Negative values indicate an error.
278 */
279int mi_lttng_writer_open_element(struct mi_writer *writer,
280 const char *element_name);
281
282/*
283 * Close the current element tag.
284 *
285 * writer An instance of a machine interface writer.
286 *
287 * Returns zero if the XML document could be closed cleanly.
288 * Negative values indicate an error.
289 */
290int mi_lttng_writer_close_element(struct mi_writer *writer);
291
292/*
5e18ec73 293 * Close multiple element.
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294 *
295 * writer An instance of a machine interface writer.
5e18ec73 296 * nb_element Number of elements.
c7e35b03 297 *
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298 * Returns zero if the XML document could be closed cleanly.
299 * Negative values indicate an error.
300 */
301int mi_lttng_close_multi_element(struct mi_writer *writer,
302 unsigned int nb_element);
303
304/*
305 * Write an element of type unsigned int.
c7e35b03 306 *
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307 * writer An instance of a machine interface writer.
308 * element_name Element name.
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309 * value Unsigned int value of the element
310 *
311 * Returns zero if the element's value could be written.
312 * Negative values indicate an error.
313 */
314int mi_lttng_writer_write_element_unsigned_int(struct mi_writer *writer,
315 const char *element_name, uint64_t value);
316
317/*
318 * Write an element of type signed int.
319 *
320 * writer An instance of a machine interface writer.
c7e35b03 321 * element_name Element name.
5e18ec73 322 * value Signed int value of the element.
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323 *
324 * Returns zero if the element's value could be written.
325 * Negative values indicate an error.
326 */
327int mi_lttng_writer_write_element_signed_int(struct mi_writer *writer,
328 const char *element_name, int64_t value);
329
330/*
331 * Write an element of type boolean.
332 *
333 * writer An instance of a machine interface writer.
c7e35b03 334 * element_name Element name.
5e18ec73 335 * value Boolean value of the element.
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336 *
337 * Returns zero if the element's value could be written.
338 * Negative values indicate an error.
339 */
340int mi_lttng_writer_write_element_bool(struct mi_writer *writer,
341 const char *element_name, int value);
342
343/*
344 * Write an element of type string.
345 *
346 * writer An instance of a machine interface writer.
c7e35b03 347 * element_name Element name.
5e18ec73 348 * value String value of the element.
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349 *
350 * Returns zero if the element's value could be written.
351 * Negative values indicate an error.
352 */
353int mi_lttng_writer_write_element_string(struct mi_writer *writer,
354 const char *element_name, const char *value);
355
356/*
357 * Machine interface of struct version.
358 *
359 * writer An instance of a machine interface writer.
c7e35b03 360 * version Version struct.
c7e35b03 361 * lttng_description String value of the version description.
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362 * lttng_license String value of the version license.
363 *
364 * Returns zero if the element's value could be written.
365 * Negative values indicate an error.
366 */
367int mi_lttng_version(struct mi_writer *writer, struct mi_lttng_version *version,
368 const char *lttng_description, const char *lttng_license);
369
370/*
5e18ec73 371 * Machine interface: open a sessions element.
c7e35b03 372 *
5e18ec73 373 * writer An instance of a machine interface writer.
c7e35b03 374 *
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375 * Returns zero if the element's value could be written.
376 * Negative values indicate an error.
377 */
378int mi_lttng_sessions_open(struct mi_writer *writer);
379
380/*
381 * Machine interface of struct session.
c7e35b03 382 *
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383 * writer An instance of a machine interface writer.
384 * session An instance of a session.
385 * is_open Defines whether or not the session element shall be closed.
386 * This should be used carefully and the client
387 * must close the session element.
136f2f81 388 * Use case: nested additional information on a session
c7e35b03 389 * ex: domain,channel event.
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390 *
391 * Returns zero if the element's value could be written.
392 * Negative values indicate an error.
393 */
394int mi_lttng_session(struct mi_writer *writer,
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395 struct lttng_session *session, int is_open);
396
397/*
398 * Machine interface: open a domains element.
399 *
400 * writer An instance of a machine interface writer.
401 *
402 * Returns zero if the element's value could be written.
403 * Negative values indicate an error.
404 */
405int mi_lttng_domains_open(struct mi_writer *writer);
406
407/*
408 * Machine interface of struct domain.
409 *
410 * writer An instance of a machine interface writer.
411 * domain An instance of a domain.
412 *
413 * is_open Defines whether or not the session element shall be closed.
414 * This should be used carefully and the client
415 * must close the domain element.
416 * Use case: nested addition information on a domain
417 * ex: channel event.
418 *
419 * Returns zero if the element's value could be written.
420 * Negative values indicate an error.
421 */
422int mi_lttng_domain(struct mi_writer *writer,
423 struct lttng_domain *domain, int is_open);
424
425/*
426 * Machine interface: open a channels element.
427 *
428 * writer An instance of a machine interface writer.
429 *
430 * Returns zero if the element's value could be written.
431 * Negative values indicate an error.
432 */
433int mi_lttng_channels_open(struct mi_writer *writer);
434
435/*
436 * Machine interface of struct channel.
437 *
438 * writer An instance of a machine interface writer.
439 * channel An instance of a channel.
440 *
441 * is_open Defines whether or not the session element shall be closed.
442 * This should be used carefully and the client
443 * must close the channel element.
444 * Use case: nested addition information on a channel.
445 * ex: channel event.
446 *
447 * Returns zero if the element's value could be written.
448 * Negative values indicate an error.
449 */
450int mi_lttng_channel(struct mi_writer *writer,
451 struct lttng_channel *channel, int is_open);
452
453/*
454 * Machine interface of struct channel_attr.
455 *
456 * writer An instance of a machine interface writer.
457 * attr An instance of a channel_attr struct.
458 *
459 * Returns zero if the element's value could be written.
460 * Negative values indicate an error.
461 */
462int mi_lttng_channel_attr(struct mi_writer *writer,
463 struct lttng_channel_attr *attr);
464
465/*
466* Machine interface for event common attributes.
467*
468* writer An instance of a mi writer.
469* event single trace event.
470*
471* The common attribute are:
472* - mi event element
473* - event name
474* - event type
475* - enabled tag
476* - event filter
477*
478* Returns zero if the element's value could be written.
479* Negative values indicate an error.
480*/
481int mi_lttng_event_common_attributes(struct mi_writer *writer,
482 struct lttng_event *event);
483
484/*
485 * Machine interface for kernel tracepoint event with a loglevel.
486 *
487 * writer An instance of a mi writer.
488 * event single trace event.
970d848b 489 * domain Event's domain
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490 *
491 * Returns zero if the element's value could be written.
492 * Negative values indicate an error.
493 */
494int mi_lttng_event_tracepoint_loglevel(struct mi_writer *writer,
970d848b 495 struct lttng_event *event, enum lttng_domain_type domain);
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496
497/*
498 * Machine interface for kernel tracepoint event with no loglevel.
499 *
500 * writer An instance of a mi writer.
501 * event single trace event.
502 *
503 * Returns zero if the element's value could be written.
504 * Negative values indicate an error.
505 */
506int mi_lttng_event_tracepoint_no_loglevel(struct mi_writer *writer,
507 struct lttng_event *event);
508
509/*
510 * Machine interface for kernel function and probe event.
511 *
512 * writer An instance of a mi writer.
513 * event single trace event.
514 *
515 * Returns zero if the element's value could be written.
516 * Negative values indicate an error.
517 */
518int mi_lttng_event_function_probe(struct mi_writer *writer,
519 struct lttng_event *event);
520
521/*
522 * Machine interface for kernel function entry event.
523 *
524 * writer An instance of a mi writer.
525 * event single trace event.
526 *
527 * Returns zero if the element's value could be written.
528 * Negative values indicate an error.
529 */
530int mi_lttng_event_function_entry(struct mi_writer *writer,
531 struct lttng_event *event);
532
533/*
534 * Machine interface: open an events element.
535 *
536 * writer An instance of a machine interface writer.
537 *
538 * Returns zero if the element's value could be written.
539 * Negative values indicate an error.
540 */
541int mi_lttng_events_open(struct mi_writer *writer);
542
543/*
544 * Machine interface for printing an event.
545 * The trace event type currently supported are:
546 * TRACEPOINT,
547 * PROBE,
548 * FUNCTION,
549 * FUNCTION_ENTRY,
550 * SYSCALL
551 *
552 * writer An instance of a mi writer.
553 * event single trace event.
554 * is_open Defines whether or not the session element shall be closed.
555 * This should be used carefully and the client
556 * must close the event element.
557 * Use case: nested additional information
970d848b 558 * domain Event's domain
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559 *
560 * Returns zero if the element's value could be written.
561 * Negative values indicate an error.
562 */
563int mi_lttng_event(struct mi_writer *writer, struct lttng_event *event,
970d848b 564 int is_open, enum lttng_domain_type domain);
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565
566/*
567 * Machine interface for struct lttng_event_field.
568 *
569 * writer An instance of a mi writer.
570 * field An event_field instance.
571 *
572 * Returns zero if the element's value could be written.
573 * Negative values indicate an error.
574 */
575int mi_lttng_event_field(struct mi_writer *writer,
576 struct lttng_event_field *field);
577
578/*
579 * Machine interface: open a event_fields element.
580 *
581 * writer An instance of a machine interface writer.
582 *
e4d484a5 583 * Returns zero if the element have be written.
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584 * Negative values indicate an error.
585 */
586int mi_lttng_event_fields_open(struct mi_writer *writer);
587
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588/*
589 * Machine interface: open a trackers element.
590 *
591 * writer An instance of a machine interface writer.
592 *
593 * Returns zero if the element's value could be written.
594 * Negative values indicate an error.
595 */
596int mi_lttng_trackers_open(struct mi_writer *writer);
597
598/*
159b042f 599 * Machine interface: open a process attribute tracker element.
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600 *
601 * writer An instance of a machine interface writer.
602 *
603 * Returns zero if the element's value could be written.
604 * Negative values indicate an error.
605 *
606 * Note: A targets element is also opened for each tracker definition
607 */
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608int mi_lttng_process_attribute_tracker_open(
609 struct mi_writer *writer, enum lttng_process_attr process_attr);
ebbf5ab7 610
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611/*
612 * Machine interface: open a PIDs element.
613 *
614 * writer An instance of a machine interface writer.
615 *
616 * Returns zero if the element's value could be written.
617 * Negative values indicate an error.
618 */
619int mi_lttng_pids_open(struct mi_writer *writer);
620
621/*
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622 * Machine interface: open a processes element.
623 *
624 * writer An instance of a machine interface writer.
625 *
626 * Returns zero if the element's value could be written.
627 * Negative values indicate an error.
628 */
629int mi_lttng_processes_open(struct mi_writer *writer);
630
631/*
632 * Machine interface of a Process.
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633 *
634 * writer An instance of a machine interface writer.
635 * pid A PID.
636 *
637 * is_open Defines whether or not the session element shall be closed.
638 * This should be used carefully and the client
639 * must close the pid element.
640 * Use case: nested addition information on a domain
641 * ex: channel event.
642 *
643 * Returns zero if the element's value could be written.
644 * Negative values indicate an error.
645 */
ebbf5ab7 646int mi_lttng_process(struct mi_writer *writer, pid_t pid , const char *name,
5e18ec73 647 int is_open);
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648
649/*
650 * TODO: move pid of lttng list -u to process semantic on mi api bump
651 * Machine interface of a Process.
652 *
653 * writer An instance of a machine interface writer.
654 * pid A PID.
655 *
656 * is_open Defines whether or not the session element shall be closed.
657 * This should be used carefully and the client
658 * must close the pid element.
659 * Use case: nested addition information on a domain
660 * ex: channel event.
661 *
662 * Returns zero if the element's value could be written.
663 * Negative values indicate an error.
664 */
665int mi_lttng_pid(struct mi_writer *writer, pid_t pid , const char *name,
666 int is_open);
159b042f 667
ebbf5ab7 668/*
159b042f 669 * Machine interface: open a process attribute values element.
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670 *
671 * writer An instance of a machine interface writer.
672 *
673 * Returns zero if the element's value could be written.
674 * Negative values indicate an error.
675 */
159b042f 676int mi_lttng_process_attr_values_open(struct mi_writer *writer);
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677
678/*
159b042f 679 * Machine interface for track/untrack of all process attribute values.
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680 *
681 * writer An instance of a machine interface writer.
682 *
683 * Returns zero if the element's value could be written.
684 * Negative values indicate an error.
685 */
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686int mi_lttng_all_process_attribute_value(struct mi_writer *writer,
687 enum lttng_process_attr process_attr,
688 bool is_open);
689
690/*
691 * Machine interface for track/untrack of an integral process attribute value.
692 *
693 * writer An instance of a machine interface writer.
694 *
695 * Returns zero if the element's value could be written.
696 * Negative values indicate an error.
697 */
698int mi_lttng_integral_process_attribute_value(struct mi_writer *writer,
699 enum lttng_process_attr process_attr,
700 int64_t value,
701 bool is_open);
702
703/*
704 * Machine interface for track/untrack of a string process attribute value.
705 *
706 * writer An instance of a machine interface writer.
707 *
708 * Returns zero if the element's value could be written.
709 * Negative values indicate an error.
710 */
711int mi_lttng_string_process_attribute_value(struct mi_writer *writer,
712 enum lttng_process_attr process_attr,
713 const char *value,
714 bool is_open);
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716/*
717 * Machine interface of a context.
718 *
719 * writer An instance of a machine interface writer
720 *
721 * context An instance of a lttng_event_context
722 *
723 * is_open Define if we close the context element
724 * This should be used carefully and the client
725 * need to close the context element.
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726 * Returns zero if the element's value could be written.
727 * Negative values indicate an error.
728 */
729int mi_lttng_context(struct mi_writer *writer,
730 struct lttng_event_context *context, int is_open);
731
732/*
733 * Machine interface of a perf_counter_context.
734 *
735 * writer An instance of a machine interface writer
736 *
737 * contest An instance of a lttng_event_perf_counter_ctx
738 *
739 * Returns zero if the element's value could be written.
740 * Negative values indicate an error.
741 */
742int mi_lttng_perf_counter_context(struct mi_writer *writer,
743 struct lttng_event_perf_counter_ctx *perf_context);
744
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745/*
746 * Machine interface of the snapshot list_output.
747 * It specifies the session for which we are listing snapshots,
748 * and it opens a snapshots element to list a sequence
749 * of snapshots.
750 *
751 * writer An instance of a machine interface writer.
752 *
753 * session_name: Snapshot output for session "session_name".
754 *
755 * Note: The client has to close the session and the snapshots elements after
756 * having listed every lttng_snapshot_output.
757 *
758 * Returns zero if the element's value could be written.
759 * Negative values indicate an error.
760 */
761int mi_lttng_snapshot_output_session_name(struct mi_writer *writer,
762 const char *session_name);
763
764/*
765 * Machine interface of the snapshot output.
766 * The machine interface serializes the following attributes:
767 * - id: ID of the snapshot output.
768 * - name: Name of the output.
769 * - data_url : Destination of the output.
770 * - ctrl_url: Destination of the output.
771 * - max_size: total size of all stream combined.
772 *
773 * writer An instance of a machine interface writer.
774 *
775 * output: A list of snapshot_output.
776 *
777 * Returns zero if the element's value could be written.
778 * Negative values indicate an error.
779 */
780int mi_lttng_snapshot_list_output(struct mi_writer *writer,
781 struct lttng_snapshot_output *output);
782
783/*
784 * Machine interface of the output of the command snapshot del output
785 * when deleting a snapshot either by id or by name.
786 * If the snapshot was found and successfully deleted using its id,
787 * it return the id of the snapshot and the current session name on which it
788 * was attached.
789 *
790 * Otherwise, it do the same process with the name of the snapshot, if the
791 * snapshot output id is undefined.
792 *
793 * writer An instance of a machine interface writer.
794 *
795 * id: ID of the snapshot output.
796 *
797 * name: Name of the snapshot.
798 *
799 * current_session_name: Session to which the snapshot belongs.
800 *
801 * Returns zero if the element's value could be written.
802 * Negative values indicate an error.
803 */
804int mi_lttng_snapshot_del_output(struct mi_writer *writer, int id,
805 const char *name, const char *current_session_name);
806
807/*
808 * Machine interface of the output of the command snapshot add output
809 * when adding a snapshot from a user URL.
810 *
811 * If the snapshot was successfully added, the machine interface lists
812 * these information:
813 * - id: ID of the newly add snapshot output.
814 * - current_session_name: Name of the session to which the output was added.
815 * - ctrl_url: Destination of the output.
816 * - max_size: total size of all stream combined.
817 *
818 * writer An instance of a machine interface writer.
819 *
820 * current_session_name: Session to which the snapshot belongs.
821 *
822 * n_ptr:
823 *
824 * output: iterator over a lttng_snapshot_output_list which contain
825 * the snapshot output informations.
826 *
827 * Returns zero if the element's value could be written.
828 * Negative values indicate an error.
829 */
830int mi_lttng_snapshot_add_output(struct mi_writer *writer,
831 const char *current_session_name, const char *n_ptr,
832 struct lttng_snapshot_output *output);
833
834/*
835 * Machine interface of the output of the command snapshot
836 * record from a URL (if given).
837 *
838 * If the snapshot is successfully recorded from a url, the machine interface
839 * output the following information:
840 * - url: Destination of the output stored in the snapshot.
841 *
842 * Otherwise, the machine interface output the data and ctrl url received
843 * from the command-line.
844 *
845 * writer An instance of a machine interface writer.
846 *
847 * current_session_name: Snapshot record for session "current_session_name".
848 *
849 * ctrl_url, data_url: Destination of the output receive from the command-line.
850 *
851 * Returns zero if the element's value could be written.
852 * Negative values indicate an error.
853 */
854int mi_lttng_snapshot_record(struct mi_writer *writer,
855 const char *current_session_name, const char *url,
856 const char *cmdline_ctrl_url, const char *cmdline_data_url);
857
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858/*
859 * Machine interface representation of a session rotation schedule.
860 *
861 * The machine interface serializes the provided schedule as one of the choices
862 * from 'rotation_schedule_type'.
863 *
864 * writer: An instance of a machine interface writer.
865 *
866 * schedule: An lttng rotation schedule descriptor object.
867 *
868 * Returns zero if the element's value could be written.
869 * Negative values indicate an error.
870 */
871int mi_lttng_rotation_schedule(struct mi_writer *writer,
872 const struct lttng_rotation_schedule *schedule);
873
874/*
875 * Machine interface of a session rotation schedule result.
876 * This is an element that is part of the output of the enable-rotation and
877 * disable-rotation commands.
878 *
879 * The machine interface provides the following information:
880 * - schedule: the session rotation schedule descriptor.
881 * - success: whether the sub-command succeeded.
882 *
883 * writer: An instance of a machine interface writer.
884 *
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885 * schedule: An lttng rotation schedule descriptor object.
886 *
887 * success: Whether the sub-command suceeded.
888 *
889 * Returns zero if the element's value could be written.
890 * Negative values indicate an error.
891 */
892int mi_lttng_rotation_schedule_result(struct mi_writer *writer,
893 const struct lttng_rotation_schedule *schedule,
894 bool success);
895
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896/*
897 * Machine interface of a session rotation result.
898 * This is an element that is part of the output of the rotate command.
899 *
900 * The machine interface provides the following information:
901 * - session_name: the session to be rotated.
902 * - state: the session rotation state.
903 * - location: the location of the completed chunk archive.
904 *
905 * writer: An instance of a machine interface writer.
906 *
907 * session_name: The session to which the rotate command applies.
908 *
909 * location: A location descriptor object.
910 *
911 * success: Whether the sub-command suceeded.
912 *
913 * Returns zero if the element's value could be written.
914 * Negative values indicate an error.
915 */
916int mi_lttng_rotate(struct mi_writer *writer,
917 const char *session_name,
918 enum lttng_rotation_state rotation_state,
919 const struct lttng_trace_archive_location *location);
920
c7e35b03 921#endif /* _MI_LTTNG_H */
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