2 * Copyright (C) 2014 - Jonathan Rajotte <jonathan.r.julien@gmail.com>
3 * - Olivier Cotte <olivier.cotte@polymtl.ca>
4 * Copyright (C) 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License, version 2 only, as
8 * published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc., 51
17 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 #include <common/config/session-config.h>
22 #include <common/defaults.h>
23 #include <lttng/snapshot-internal.h>
24 #include <lttng/channel.h>
29 #define MI_SCHEMA_MAJOR_VERSION 3
30 #define MI_SCHEMA_MINOR_VERSION 0
32 /* Machine interface namespace URI */
33 LTTNG_HIDDEN
const char * const mi_lttng_xmlns
= "xmlns";
34 LTTNG_HIDDEN
const char * const mi_lttng_xmlns_xsi
= "xmlns:xsi";
35 LTTNG_HIDDEN
const char * const mi_lttng_w3_schema_uri
= "http://www.w3.org/2001/XMLSchema-instance";
36 LTTNG_HIDDEN
const char * const mi_lttng_schema_location
= "xsi:schemaLocation";
37 LTTNG_HIDDEN
const char * const mi_lttng_schema_location_uri
=
38 DEFAULT_LTTNG_MI_NAMESPACE
" "
39 "http://lttng.org/xml/schemas/lttng-mi/" XSTR(MI_SCHEMA_MAJOR_VERSION
)
40 "/lttng-mi-" XSTR(MI_SCHEMA_MAJOR_VERSION
) "."
41 XSTR(MI_SCHEMA_MINOR_VERSION
) ".xsd";
42 LTTNG_HIDDEN
const char * const mi_lttng_schema_version
= "schemaVersion";
43 LTTNG_HIDDEN
const char * const mi_lttng_schema_version_value
= XSTR(MI_SCHEMA_MAJOR_VERSION
)
44 "." XSTR(MI_SCHEMA_MINOR_VERSION
);
46 /* Strings related to command */
47 const char * const mi_lttng_element_command
= "command";
48 const char * const mi_lttng_element_command_action
= "snapshot_action";
49 const char * const mi_lttng_element_command_add_context
= "add-context";
50 const char * const mi_lttng_element_command_create
= "create";
51 const char * const mi_lttng_element_command_destroy
= "destroy";
52 const char * const mi_lttng_element_command_disable_channel
= "disable-channel";
53 const char * const mi_lttng_element_command_disable_event
= "disable-event";
54 const char * const mi_lttng_element_command_enable_channels
= "enable-channel";
55 const char * const mi_lttng_element_command_enable_event
= "enable-event";
56 const char * const mi_lttng_element_command_list
= "list";
57 const char * const mi_lttng_element_command_load
= "load";
58 LTTNG_HIDDEN
const char * const mi_lttng_element_command_metadata
= "metadata";
59 LTTNG_HIDDEN
const char * const mi_lttng_element_command_metadata_action
= "metadata_action";
60 LTTNG_HIDDEN
const char * const mi_lttng_element_command_regenerate
= "regenerate";
61 LTTNG_HIDDEN
const char * const mi_lttng_element_command_regenerate_action
= "regenerate_action";
62 const char * const mi_lttng_element_command_name
= "name";
63 const char * const mi_lttng_element_command_output
= "output";
64 const char * const mi_lttng_element_command_save
= "save";
65 const char * const mi_lttng_element_command_set_session
= "set-session";
66 const char * const mi_lttng_element_command_snapshot
= "snapshot";
67 const char * const mi_lttng_element_command_snapshot_add
= "add_snapshot";
68 const char * const mi_lttng_element_command_snapshot_del
= "del_snapshot";
69 const char * const mi_lttng_element_command_snapshot_list
= "list_snapshot";
70 const char * const mi_lttng_element_command_snapshot_record
= "record_snapshot";
71 const char * const mi_lttng_element_command_start
= "start";
72 const char * const mi_lttng_element_command_stop
= "stop";
73 const char * const mi_lttng_element_command_success
= "success";
74 const char * const mi_lttng_element_command_track
= "track";
75 const char * const mi_lttng_element_command_untrack
= "untrack";
76 const char * const mi_lttng_element_command_version
= "version";
77 const char * const mi_lttng_element_command_rotate
= "rotate";
78 const char * const mi_lttng_element_command_enable_rotation
= "enable-rotation";
79 const char * const mi_lttng_element_command_disable_rotation
= "disable-rotation";
81 /* Strings related to version command */
82 const char * const mi_lttng_element_version
= "version";
83 const char * const mi_lttng_element_version_commit
= "commit";
84 const char * const mi_lttng_element_version_description
= "description";
85 const char * const mi_lttng_element_version_license
= "license";
86 const char * const mi_lttng_element_version_major
= "major";
87 const char * const mi_lttng_element_version_minor
= "minor";
88 const char * const mi_lttng_element_version_patch_level
= "patchLevel";
89 const char * const mi_lttng_element_version_str
= "string";
90 const char * const mi_lttng_element_version_web
= "url";
92 /* String related to a lttng_event_field */
93 const char * const mi_lttng_element_event_field
= "event_field";
94 const char * const mi_lttng_element_event_fields
= "event_fields";
96 /* String related to lttng_event_perf_counter_ctx */
97 const char * const mi_lttng_element_perf_counter_context
= "perf";
99 /* Strings related to pid */
100 const char * const mi_lttng_element_pid_id
= "id";
102 /* Strings related to save command */
103 const char * const mi_lttng_element_save
= "save";
105 /* Strings related to load command */
106 const char * const mi_lttng_element_load
= "load";
107 LTTNG_HIDDEN
const char * const mi_lttng_element_load_overrides
= "overrides";
108 LTTNG_HIDDEN
const char * const mi_lttng_element_load_override_url
= "url";
110 /* General elements of mi_lttng */
111 const char * const mi_lttng_element_empty
= "";
112 const char * const mi_lttng_element_id
= "id";
113 const char * const mi_lttng_element_nowrite
= "nowrite";
114 const char * const mi_lttng_element_success
= "success";
115 const char * const mi_lttng_element_type_enum
= "ENUM";
116 const char * const mi_lttng_element_type_float
= "FLOAT";
117 const char * const mi_lttng_element_type_integer
= "INTEGER";
118 const char * const mi_lttng_element_type_other
= "OTHER";
119 const char * const mi_lttng_element_type_string
= "STRING";
121 /* String related to loglevel */
122 const char * const mi_lttng_loglevel_str_alert
= "TRACE_ALERT";
123 const char * const mi_lttng_loglevel_str_crit
= "TRACE_CRIT";
124 const char * const mi_lttng_loglevel_str_debug
= "TRACE_DEBUG";
125 const char * const mi_lttng_loglevel_str_debug_function
= "TRACE_DEBUG_FUNCTION";
126 const char * const mi_lttng_loglevel_str_debug_line
= "TRACE_DEBUG_LINE";
127 const char * const mi_lttng_loglevel_str_debug_module
= "TRACE_DEBUG_MODULE";
128 const char * const mi_lttng_loglevel_str_debug_process
= "TRACE_DEBUG_PROCESS";
129 const char * const mi_lttng_loglevel_str_debug_program
= "TRACE_DEBUG_PROGRAM";
130 const char * const mi_lttng_loglevel_str_debug_system
= "TRACE_DEBUG_SYSTEM";
131 const char * const mi_lttng_loglevel_str_debug_unit
= "TRACE_DEBUG_UNIT";
132 const char * const mi_lttng_loglevel_str_emerg
= "TRACE_EMERG";
133 const char * const mi_lttng_loglevel_str_err
= "TRACE_ERR";
134 const char * const mi_lttng_loglevel_str_info
= "TRACE_INFO";
135 const char * const mi_lttng_loglevel_str_notice
= "TRACE_NOTICE";
136 const char * const mi_lttng_loglevel_str_unknown
= "UNKNOWN";
137 const char * const mi_lttng_loglevel_str_warning
= "TRACE_WARNING";
139 /* String related to loglevel JUL */
140 const char * const mi_lttng_loglevel_str_jul_all
= "JUL_ALL";
141 const char * const mi_lttng_loglevel_str_jul_config
= "JUL_CONFIG";
142 const char * const mi_lttng_loglevel_str_jul_fine
= "JUL_FINE";
143 const char * const mi_lttng_loglevel_str_jul_finer
= "JUL_FINER";
144 const char * const mi_lttng_loglevel_str_jul_finest
= "JUL_FINEST";
145 const char * const mi_lttng_loglevel_str_jul_info
= "JUL_INFO";
146 const char * const mi_lttng_loglevel_str_jul_off
= "JUL_OFF";
147 const char * const mi_lttng_loglevel_str_jul_severe
= "JUL_SEVERE";
148 const char * const mi_lttng_loglevel_str_jul_warning
= "JUL_WARNING";
150 /* String related to loglevel LOG4J */
151 const char * const mi_lttng_loglevel_str_log4j_off
= "LOG4J_OFF";
152 const char * const mi_lttng_loglevel_str_log4j_fatal
= "LOG4J_FATAL";
153 const char * const mi_lttng_loglevel_str_log4j_error
= "LOG4J_ERROR";
154 const char * const mi_lttng_loglevel_str_log4j_warn
= "LOG4J_WARN";
155 const char * const mi_lttng_loglevel_str_log4j_info
= "LOG4J_INFO";
156 const char * const mi_lttng_loglevel_str_log4j_debug
= "LOG4J_DEBUG";
157 const char * const mi_lttng_loglevel_str_log4j_trace
= "LOG4J_TRACE";
158 const char * const mi_lttng_loglevel_str_log4j_all
= "LOG4J_ALL";
160 /* String related to loglevel Python */
161 const char * const mi_lttng_loglevel_str_python_critical
= "PYTHON_CRITICAL";
162 const char * const mi_lttng_loglevel_str_python_error
= "PYTHON_ERROR";
163 const char * const mi_lttng_loglevel_str_python_warning
= "PYTHON_WARNING";
164 const char * const mi_lttng_loglevel_str_python_info
= "PYTHON_INFO";
165 const char * const mi_lttng_loglevel_str_python_debug
= "PYTHON_DEBUG";
166 const char * const mi_lttng_loglevel_str_python_notset
= "PYTHON_NOTSET";
168 /* String related to loglevel type */
169 const char * const mi_lttng_loglevel_type_all
= "ALL";
170 const char * const mi_lttng_loglevel_type_range
= "RANGE";
171 const char * const mi_lttng_loglevel_type_single
= "SINGLE";
172 const char * const mi_lttng_loglevel_type_unknown
= "UNKNOWN";
174 /* String related to a lttng_snapshot_output */
175 const char * const mi_lttng_element_snapshot_ctrl_url
= "ctrl_url";
176 const char * const mi_lttng_element_snapshot_data_url
= "data_url";
177 const char * const mi_lttng_element_snapshot_max_size
= "max_size";
178 const char * const mi_lttng_element_snapshot_n_ptr
= "n_ptr";
179 const char * const mi_lttng_element_snapshot_session_name
= "session_name";
180 const char * const mi_lttng_element_snapshots
= "snapshots";
182 /* String related to track/untrack command */
183 const char * const mi_lttng_element_track_untrack_all_wildcard
= "*";
185 LTTNG_HIDDEN
const char * const mi_lttng_element_session_name
= "session_name";
187 /* String related to rotate command */
188 LTTNG_HIDDEN
const char * const mi_lttng_element_rotation
= "rotation";
189 LTTNG_HIDDEN
const char * const mi_lttng_element_rotations
= "rotations";
190 LTTNG_HIDDEN
const char * const mi_lttng_element_rotate_status
= "status";
191 LTTNG_HIDDEN
const char * const mi_lttng_element_rotation_schedule
= "rotation_schedule";
193 /* Deprecated symbols preserved for ABI compatibility. */
194 const char * const mi_lttng_context_type_perf_counter
;
195 const char * const mi_lttng_context_type_perf_cpu_counter
;
196 const char * const mi_lttng_context_type_perf_thread_counter
;
197 const char * const mi_lttng_element_track_untrack_pid_target
;
198 const char * const mi_lttng_element_track_untrack_targets
;
199 const char * const mi_lttng_element_calibrate
;
200 const char * const mi_lttng_element_calibrate_function
;
201 const char * const mi_lttng_element_command_calibrate
;
203 /* This is a merge of jul loglevel and regular loglevel
204 * Those should never overlap by definition
205 * (see struct lttng_event loglevel)
208 const char *mi_lttng_loglevel_string(int value
, enum lttng_domain_type domain
)
211 case LTTNG_DOMAIN_KERNEL
:
212 case LTTNG_DOMAIN_UST
:
215 return mi_lttng_element_empty
;
216 case LTTNG_LOGLEVEL_EMERG
:
217 return mi_lttng_loglevel_str_emerg
;
218 case LTTNG_LOGLEVEL_ALERT
:
219 return mi_lttng_loglevel_str_alert
;
220 case LTTNG_LOGLEVEL_CRIT
:
221 return mi_lttng_loglevel_str_crit
;
222 case LTTNG_LOGLEVEL_ERR
:
223 return mi_lttng_loglevel_str_err
;
224 case LTTNG_LOGLEVEL_WARNING
:
225 return mi_lttng_loglevel_str_warning
;
226 case LTTNG_LOGLEVEL_NOTICE
:
227 return mi_lttng_loglevel_str_notice
;
228 case LTTNG_LOGLEVEL_INFO
:
229 return mi_lttng_loglevel_str_info
;
230 case LTTNG_LOGLEVEL_DEBUG_SYSTEM
:
231 return mi_lttng_loglevel_str_debug_system
;
232 case LTTNG_LOGLEVEL_DEBUG_PROGRAM
:
233 return mi_lttng_loglevel_str_debug_program
;
234 case LTTNG_LOGLEVEL_DEBUG_PROCESS
:
235 return mi_lttng_loglevel_str_debug_process
;
236 case LTTNG_LOGLEVEL_DEBUG_MODULE
:
237 return mi_lttng_loglevel_str_debug_module
;
238 case LTTNG_LOGLEVEL_DEBUG_UNIT
:
239 return mi_lttng_loglevel_str_debug_unit
;
240 case LTTNG_LOGLEVEL_DEBUG_FUNCTION
:
241 return mi_lttng_loglevel_str_debug_function
;
242 case LTTNG_LOGLEVEL_DEBUG_LINE
:
243 return mi_lttng_loglevel_str_debug_line
;
244 case LTTNG_LOGLEVEL_DEBUG
:
245 return mi_lttng_loglevel_str_debug
;
247 return mi_lttng_loglevel_str_unknown
;
250 case LTTNG_DOMAIN_LOG4J
:
253 return mi_lttng_element_empty
;
254 case LTTNG_LOGLEVEL_LOG4J_OFF
:
255 return mi_lttng_loglevel_str_log4j_off
;
256 case LTTNG_LOGLEVEL_LOG4J_FATAL
:
257 return mi_lttng_loglevel_str_log4j_fatal
;
258 case LTTNG_LOGLEVEL_LOG4J_ERROR
:
259 return mi_lttng_loglevel_str_log4j_error
;
260 case LTTNG_LOGLEVEL_LOG4J_WARN
:
261 return mi_lttng_loglevel_str_log4j_warn
;
262 case LTTNG_LOGLEVEL_LOG4J_INFO
:
263 return mi_lttng_loglevel_str_log4j_info
;
264 case LTTNG_LOGLEVEL_LOG4J_DEBUG
:
265 return mi_lttng_loglevel_str_log4j_debug
;
266 case LTTNG_LOGLEVEL_LOG4J_TRACE
:
267 return mi_lttng_loglevel_str_log4j_trace
;
268 case LTTNG_LOGLEVEL_LOG4J_ALL
:
269 return mi_lttng_loglevel_str_log4j_all
;
271 return mi_lttng_loglevel_str_unknown
;
274 case LTTNG_DOMAIN_JUL
:
277 return mi_lttng_element_empty
;
278 case LTTNG_LOGLEVEL_JUL_OFF
:
279 return mi_lttng_loglevel_str_jul_off
;
280 case LTTNG_LOGLEVEL_JUL_SEVERE
:
281 return mi_lttng_loglevel_str_jul_severe
;
282 case LTTNG_LOGLEVEL_JUL_WARNING
:
283 return mi_lttng_loglevel_str_jul_warning
;
284 case LTTNG_LOGLEVEL_JUL_INFO
:
285 return mi_lttng_loglevel_str_jul_info
;
286 case LTTNG_LOGLEVEL_JUL_CONFIG
:
287 return mi_lttng_loglevel_str_jul_config
;
288 case LTTNG_LOGLEVEL_JUL_FINE
:
289 return mi_lttng_loglevel_str_jul_fine
;
290 case LTTNG_LOGLEVEL_JUL_FINER
:
291 return mi_lttng_loglevel_str_jul_finer
;
292 case LTTNG_LOGLEVEL_JUL_FINEST
:
293 return mi_lttng_loglevel_str_jul_finest
;
294 case LTTNG_LOGLEVEL_JUL_ALL
:
295 return mi_lttng_loglevel_str_jul_all
;
297 return mi_lttng_loglevel_str_unknown
;
300 case LTTNG_DOMAIN_PYTHON
:
302 case LTTNG_LOGLEVEL_PYTHON_CRITICAL
:
303 return mi_lttng_loglevel_str_python_critical
;
304 case LTTNG_LOGLEVEL_PYTHON_ERROR
:
305 return mi_lttng_loglevel_str_python_error
;
306 case LTTNG_LOGLEVEL_PYTHON_WARNING
:
307 return mi_lttng_loglevel_str_python_warning
;
308 case LTTNG_LOGLEVEL_PYTHON_INFO
:
309 return mi_lttng_loglevel_str_python_info
;
310 case LTTNG_LOGLEVEL_PYTHON_DEBUG
:
311 return mi_lttng_loglevel_str_python_debug
;
312 case LTTNG_LOGLEVEL_PYTHON_NOTSET
:
313 return mi_lttng_loglevel_str_python_notset
;
315 return mi_lttng_loglevel_str_unknown
;
319 return mi_lttng_loglevel_str_unknown
;
324 const char *mi_lttng_logleveltype_string(enum lttng_loglevel_type value
)
327 case LTTNG_EVENT_LOGLEVEL_ALL
:
328 return mi_lttng_loglevel_type_all
;
329 case LTTNG_EVENT_LOGLEVEL_RANGE
:
330 return mi_lttng_loglevel_type_range
;
331 case LTTNG_EVENT_LOGLEVEL_SINGLE
:
332 return mi_lttng_loglevel_type_single
;
334 return mi_lttng_loglevel_type_unknown
;
339 const char *mi_lttng_eventtype_string(enum lttng_event_type value
)
342 case LTTNG_EVENT_ALL
:
343 return config_event_type_all
;
344 case LTTNG_EVENT_TRACEPOINT
:
345 return config_event_type_tracepoint
;
346 case LTTNG_EVENT_PROBE
:
347 return config_event_type_probe
;
348 case LTTNG_EVENT_FUNCTION
:
349 return config_event_type_function
;
350 case LTTNG_EVENT_FUNCTION_ENTRY
:
351 return config_event_type_function_entry
;
352 case LTTNG_EVENT_SYSCALL
:
353 return config_event_type_syscall
;
354 case LTTNG_EVENT_NOOP
:
355 return config_event_type_noop
;
357 return mi_lttng_element_empty
;
362 const char *mi_lttng_event_contexttype_string(enum lttng_event_context_type val
)
365 case LTTNG_EVENT_CONTEXT_PID
:
366 return config_event_context_pid
;
367 case LTTNG_EVENT_CONTEXT_PROCNAME
:
368 return config_event_context_procname
;
369 case LTTNG_EVENT_CONTEXT_PRIO
:
370 return config_event_context_prio
;
371 case LTTNG_EVENT_CONTEXT_NICE
:
372 return config_event_context_nice
;
373 case LTTNG_EVENT_CONTEXT_VPID
:
374 return config_event_context_vpid
;
375 case LTTNG_EVENT_CONTEXT_TID
:
376 return config_event_context_tid
;
377 case LTTNG_EVENT_CONTEXT_VTID
:
378 return config_event_context_vtid
;
379 case LTTNG_EVENT_CONTEXT_PPID
:
380 return config_event_context_ppid
;
381 case LTTNG_EVENT_CONTEXT_VPPID
:
382 return config_event_context_vppid
;
383 case LTTNG_EVENT_CONTEXT_PTHREAD_ID
:
384 return config_event_context_pthread_id
;
385 case LTTNG_EVENT_CONTEXT_HOSTNAME
:
386 return config_event_context_hostname
;
387 case LTTNG_EVENT_CONTEXT_IP
:
388 return config_event_context_ip
;
389 case LTTNG_EVENT_CONTEXT_INTERRUPTIBLE
:
390 return config_event_context_interruptible
;
391 case LTTNG_EVENT_CONTEXT_PREEMPTIBLE
:
392 return config_event_context_preemptible
;
393 case LTTNG_EVENT_CONTEXT_NEED_RESCHEDULE
:
394 return config_event_context_need_reschedule
;
395 case LTTNG_EVENT_CONTEXT_MIGRATABLE
:
396 return config_event_context_migratable
;
403 const char *mi_lttng_eventfieldtype_string(enum lttng_event_field_type val
)
406 case(LTTNG_EVENT_FIELD_INTEGER
):
407 return mi_lttng_element_type_integer
;
408 case(LTTNG_EVENT_FIELD_ENUM
):
409 return mi_lttng_element_type_enum
;
410 case(LTTNG_EVENT_FIELD_FLOAT
):
411 return mi_lttng_element_type_float
;
412 case(LTTNG_EVENT_FIELD_STRING
):
413 return mi_lttng_element_type_string
;
415 return mi_lttng_element_type_other
;
420 const char *mi_lttng_domaintype_string(enum lttng_domain_type value
)
422 /* Note: This is a *duplicate* of get_domain_str from bin/lttng/utils.c */
424 case LTTNG_DOMAIN_KERNEL
:
425 return config_domain_type_kernel
;
426 case LTTNG_DOMAIN_UST
:
427 return config_domain_type_ust
;
428 case LTTNG_DOMAIN_JUL
:
429 return config_domain_type_jul
;
430 case LTTNG_DOMAIN_LOG4J
:
431 return config_domain_type_log4j
;
432 case LTTNG_DOMAIN_PYTHON
:
433 return config_domain_type_python
;
435 /* Should not have an unknown domain */
442 const char *mi_lttng_buffertype_string(enum lttng_buffer_type value
)
445 case LTTNG_BUFFER_PER_PID
:
446 return config_buffer_type_per_pid
;
447 case LTTNG_BUFFER_PER_UID
:
448 return config_buffer_type_per_uid
;
449 case LTTNG_BUFFER_GLOBAL
:
450 return config_buffer_type_global
;
452 /* Should not have an unknow buffer type */
459 struct mi_writer
*mi_lttng_writer_create(int fd_output
, int mi_output_type
)
461 struct mi_writer
*mi_writer
;
463 mi_writer
= zmalloc(sizeof(struct mi_writer
));
465 PERROR("zmalloc mi_writer_create");
468 if (mi_output_type
== LTTNG_MI_XML
) {
469 mi_writer
->writer
= config_writer_create(fd_output
, 0);
470 if (!mi_writer
->writer
) {
473 mi_writer
->type
= LTTNG_MI_XML
;
487 int mi_lttng_writer_destroy(struct mi_writer
*writer
)
496 ret
= config_writer_destroy(writer
->writer
);
507 int mi_lttng_writer_command_open(struct mi_writer
*writer
, const char *command
)
512 * A command is always the MI's root node, it must declare the current
513 * namespace and schema URIs and the schema's version.
515 ret
= config_writer_open_element(writer
->writer
,
516 mi_lttng_element_command
);
521 ret
= config_writer_write_attribute(writer
->writer
,
522 mi_lttng_xmlns
, DEFAULT_LTTNG_MI_NAMESPACE
);
527 ret
= config_writer_write_attribute(writer
->writer
,
528 mi_lttng_xmlns_xsi
, mi_lttng_w3_schema_uri
);
533 ret
= config_writer_write_attribute(writer
->writer
,
534 mi_lttng_schema_location
,
535 mi_lttng_schema_location_uri
);
540 ret
= config_writer_write_attribute(writer
->writer
,
541 mi_lttng_schema_version
,
542 mi_lttng_schema_version_value
);
547 ret
= mi_lttng_writer_write_element_string(writer
,
548 mi_lttng_element_command_name
, command
);
554 int mi_lttng_writer_command_close(struct mi_writer
*writer
)
556 return mi_lttng_writer_close_element(writer
);
560 int mi_lttng_writer_open_element(struct mi_writer
*writer
,
561 const char *element_name
)
563 return config_writer_open_element(writer
->writer
, element_name
);
567 int mi_lttng_writer_close_element(struct mi_writer
*writer
)
569 return config_writer_close_element(writer
->writer
);
573 int mi_lttng_close_multi_element(struct mi_writer
*writer
,
574 unsigned int nb_element
)
578 if (nb_element
< 1) {
582 for (i
= 0; i
< nb_element
; i
++) {
583 ret
= mi_lttng_writer_close_element(writer
);
593 int mi_lttng_writer_write_element_unsigned_int(struct mi_writer
*writer
,
594 const char *element_name
, uint64_t value
)
596 return config_writer_write_element_unsigned_int(writer
->writer
,
597 element_name
, value
);
601 int mi_lttng_writer_write_element_signed_int(struct mi_writer
*writer
,
602 const char *element_name
, int64_t value
)
604 return config_writer_write_element_signed_int(writer
->writer
,
605 element_name
, value
);
609 int mi_lttng_writer_write_element_bool(struct mi_writer
*writer
,
610 const char *element_name
, int value
)
612 return config_writer_write_element_bool(writer
->writer
,
613 element_name
, value
);
617 int mi_lttng_writer_write_element_string(struct mi_writer
*writer
,
618 const char *element_name
, const char *value
)
620 return config_writer_write_element_string(writer
->writer
,
621 element_name
, value
);
625 int mi_lttng_version(struct mi_writer
*writer
, struct mi_lttng_version
*version
,
626 const char *lttng_description
, const char *lttng_license
)
631 ret
= mi_lttng_writer_open_element(writer
, mi_lttng_element_version
);
636 /* Version string (contain info like rc etc.) */
637 ret
= mi_lttng_writer_write_element_string(writer
,
638 mi_lttng_element_version_str
, version
->version
);
643 /* Major version number */
644 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
645 mi_lttng_element_version_major
, version
->version_major
);
650 /* Minor version number */
651 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
652 mi_lttng_element_version_minor
, version
->version_minor
);
657 /* Commit version number */
658 ret
= mi_lttng_writer_write_element_string(writer
,
659 mi_lttng_element_version_commit
, version
->version_commit
);
665 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
666 mi_lttng_element_version_patch_level
, version
->version_patchlevel
);
671 /* Name of the version */
672 ret
= mi_lttng_writer_write_element_string(writer
,
673 config_element_name
, version
->version_name
);
678 /* Description mostly related to beer... */
679 ret
= mi_lttng_writer_write_element_string(writer
,
680 mi_lttng_element_version_description
, lttng_description
);
686 ret
= mi_lttng_writer_write_element_string(writer
,
687 mi_lttng_element_version_web
, version
->package_url
);
692 /* License: free as in free beer...no...*speech* */
693 ret
= mi_lttng_writer_write_element_string(writer
,
694 mi_lttng_element_version_license
, lttng_license
);
699 /* Close version element */
700 ret
= mi_lttng_writer_close_element(writer
);
707 int mi_lttng_sessions_open(struct mi_writer
*writer
)
709 return mi_lttng_writer_open_element(writer
, config_element_sessions
);
713 int mi_lttng_session(struct mi_writer
*writer
,
714 struct lttng_session
*session
, int is_open
)
720 /* Open sessions element */
721 ret
= mi_lttng_writer_open_element(writer
,
722 config_element_session
);
727 /* Name of the session */
728 ret
= mi_lttng_writer_write_element_string(writer
,
729 config_element_name
, session
->name
);
735 ret
= mi_lttng_writer_write_element_string(writer
,
736 config_element_path
, session
->path
);
742 ret
= mi_lttng_writer_write_element_bool(writer
,
743 config_element_enabled
, session
->enabled
);
749 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
750 config_element_snapshot_mode
, session
->snapshot_mode
);
755 /* Live timer interval in usec */
756 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
757 config_element_live_timer_interval
,
758 session
->live_timer_interval
);
764 /* Closing session element */
765 ret
= mi_lttng_writer_close_element(writer
);
773 int mi_lttng_domains_open(struct mi_writer
*writer
)
775 return mi_lttng_writer_open_element(writer
, config_element_domains
);
779 int mi_lttng_domain(struct mi_writer
*writer
,
780 struct lttng_domain
*domain
, int is_open
)
783 const char *str_domain
;
784 const char *str_buffer
;
788 /* Open domain element */
789 ret
= mi_lttng_writer_open_element(writer
, config_element_domain
);
795 str_domain
= mi_lttng_domaintype_string(domain
->type
);
796 ret
= mi_lttng_writer_write_element_string(writer
, config_element_type
,
803 str_buffer
= mi_lttng_buffertype_string(domain
->buf_type
);
804 ret
= mi_lttng_writer_write_element_string(writer
,
805 config_element_buffer_type
, str_buffer
);
811 * This union is not currently used and was added for
812 * future ust domain support.
817 /* Closing domain element */
818 ret
= mi_lttng_writer_close_element(writer
);
827 int mi_lttng_channels_open(struct mi_writer
*writer
)
829 return mi_lttng_writer_open_element(writer
, config_element_channels
);
833 int mi_lttng_channel(struct mi_writer
*writer
,
834 struct lttng_channel
*channel
, int is_open
)
840 /* Opening channel element */
841 ret
= mi_lttng_writer_open_element(writer
, config_element_channel
);
847 ret
= mi_lttng_writer_write_element_string(writer
, config_element_name
,
854 ret
= mi_lttng_writer_write_element_bool(writer
,
855 config_element_enabled
, channel
->enabled
);
861 ret
= mi_lttng_channel_attr(writer
, &channel
->attr
);
867 /* Closing channel element */
868 ret
= mi_lttng_writer_close_element(writer
);
878 int mi_lttng_channel_attr(struct mi_writer
*writer
,
879 struct lttng_channel_attr
*attr
)
882 struct lttng_channel
*chan
= caa_container_of(attr
,
883 struct lttng_channel
, attr
);
884 uint64_t discarded_events
, lost_packets
, monitor_timer_interval
;
885 int64_t blocking_timeout
;
889 ret
= lttng_channel_get_discarded_event_count(chan
, &discarded_events
);
894 ret
= lttng_channel_get_lost_packet_count(chan
, &lost_packets
);
899 ret
= lttng_channel_get_monitor_timer_interval(chan
,
900 &monitor_timer_interval
);
905 ret
= lttng_channel_get_blocking_timeout(chan
,
911 /* Opening Attributes */
912 ret
= mi_lttng_writer_open_element(writer
, config_element_attributes
);
918 ret
= mi_lttng_writer_write_element_string(writer
,
919 config_element_overwrite_mode
,
920 attr
->overwrite
? config_overwrite_mode_overwrite
:
921 config_overwrite_mode_discard
);
926 /* Sub buffer size in byte */
927 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
928 config_element_subbuf_size
, attr
->subbuf_size
);
933 /* Number of subbuffer (power of two) */
934 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
935 config_element_num_subbuf
,
941 /* Switch timer interval in usec */
942 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
943 config_element_switch_timer_interval
,
944 attr
->switch_timer_interval
);
949 /* Read timer interval in usec */
950 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
951 config_element_read_timer_interval
,
952 attr
->read_timer_interval
);
957 /* Monitor timer interval in usec */
958 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
959 config_element_monitor_timer_interval
,
960 monitor_timer_interval
);
965 /* Retry timeout in usec */
966 ret
= mi_lttng_writer_write_element_signed_int(writer
,
967 config_element_blocking_timeout
,
974 ret
= mi_lttng_writer_write_element_string(writer
,
975 config_element_output_type
,
976 attr
->output
== LTTNG_EVENT_SPLICE
?
977 config_output_type_splice
: config_output_type_mmap
);
982 /* Tracefile size in bytes */
983 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
984 config_element_tracefile_size
, attr
->tracefile_size
);
989 /* Count of tracefiles */
990 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
991 config_element_tracefile_count
,
992 attr
->tracefile_count
);
997 /* Live timer interval in usec*/
998 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
999 config_element_live_timer_interval
,
1000 attr
->live_timer_interval
);
1005 /* Discarded events */
1006 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1007 config_element_discarded_events
,
1014 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1015 config_element_lost_packets
,
1021 /* Closing attributes */
1022 ret
= mi_lttng_writer_close_element(writer
);
1032 int mi_lttng_event_common_attributes(struct mi_writer
*writer
,
1033 struct lttng_event
*event
)
1036 const char *filter_expression
;
1038 /* Open event element */
1039 ret
= mi_lttng_writer_open_element(writer
, config_element_event
);
1045 ret
= mi_lttng_writer_write_element_string(writer
,
1046 config_element_name
, event
->name
);
1052 ret
= mi_lttng_writer_write_element_string(writer
,
1053 config_element_type
, mi_lttng_eventtype_string(event
->type
));
1058 /* Is event enabled */
1059 ret
= mi_lttng_writer_write_element_bool(writer
,
1060 config_element_enabled
, event
->enabled
);
1065 /* Event filter expression */
1066 ret
= lttng_event_get_filter_expression(event
, &filter_expression
);
1071 if (filter_expression
) {
1072 ret
= mi_lttng_writer_write_element_string(writer
,
1073 config_element_filter_expression
,
1084 static int write_event_exclusions(struct mi_writer
*writer
,
1085 struct lttng_event
*event
)
1089 int exclusion_count
;
1091 /* Open event exclusions */
1092 ret
= mi_lttng_writer_open_element(writer
, config_element_exclusions
);
1097 exclusion_count
= lttng_event_get_exclusion_name_count(event
);
1098 if (exclusion_count
< 0) {
1099 ret
= exclusion_count
;
1103 for (i
= 0; i
< exclusion_count
; i
++) {
1106 ret
= lttng_event_get_exclusion_name(event
, i
, &name
);
1108 /* Close exclusions */
1109 mi_lttng_writer_close_element(writer
);
1113 ret
= mi_lttng_writer_write_element_string(writer
,
1114 config_element_exclusion
, name
);
1116 /* Close exclusions */
1117 mi_lttng_writer_close_element(writer
);
1122 /* Close exclusions */
1123 ret
= mi_lttng_writer_close_element(writer
);
1130 int mi_lttng_event_tracepoint_loglevel(struct mi_writer
*writer
,
1131 struct lttng_event
*event
, enum lttng_domain_type domain
)
1135 /* Event loglevel */
1136 ret
= mi_lttng_writer_write_element_string(writer
,
1137 config_element_loglevel
,
1138 mi_lttng_loglevel_string(event
->loglevel
, domain
));
1143 /* Log level type */
1144 ret
= mi_lttng_writer_write_element_string(writer
,
1145 config_element_loglevel_type
,
1146 mi_lttng_logleveltype_string(event
->loglevel_type
));
1151 /* Event exclusions */
1152 ret
= write_event_exclusions(writer
, event
);
1159 int mi_lttng_event_tracepoint_no_loglevel(struct mi_writer
*writer
,
1160 struct lttng_event
*event
)
1162 /* event exclusion filter */
1163 return write_event_exclusions(writer
, event
);
1167 int mi_lttng_event_function_probe(struct mi_writer
*writer
,
1168 struct lttng_event
*event
)
1172 ret
= mi_lttng_writer_open_element(writer
, config_element_attributes
);
1177 ret
= mi_lttng_writer_open_element(writer
, config_element_probe_attributes
);
1182 if (event
->attr
.probe
.addr
!= 0) {
1183 /* event probe address */
1184 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1185 config_element_address
, event
->attr
.probe
.addr
);
1190 /* event probe offset */
1191 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1192 config_element_offset
, event
->attr
.probe
.offset
);
1197 /* event probe symbol_name */
1198 ret
= mi_lttng_writer_write_element_string(writer
,
1199 config_element_symbol_name
, event
->attr
.probe
.symbol_name
);
1205 /* Close probe_attributes and attributes */
1206 ret
= mi_lttng_close_multi_element(writer
, 2);
1212 int mi_lttng_event_function_entry(struct mi_writer
*writer
,
1213 struct lttng_event
*event
)
1217 ret
= mi_lttng_writer_open_element(writer
, config_element_attributes
);
1222 ret
= mi_lttng_writer_open_element(writer
, config_element_probe_attributes
);
1227 /* event probe symbol_name */
1228 ret
= mi_lttng_writer_write_element_string(writer
,
1229 config_element_symbol_name
, event
->attr
.ftrace
.symbol_name
);
1234 /* Close function_attributes and attributes */
1235 ret
= mi_lttng_close_multi_element(writer
, 2);
1241 int mi_lttng_events_open(struct mi_writer
*writer
)
1243 return mi_lttng_writer_open_element(writer
, config_element_events
);
1247 int mi_lttng_event(struct mi_writer
*writer
,
1248 struct lttng_event
*event
, int is_open
, enum lttng_domain_type domain
)
1252 ret
= mi_lttng_event_common_attributes(writer
, event
);
1257 switch (event
->type
) {
1258 case LTTNG_EVENT_TRACEPOINT
:
1260 if (event
->loglevel
!= -1) {
1261 ret
= mi_lttng_event_tracepoint_loglevel(writer
, event
, domain
);
1263 ret
= mi_lttng_event_tracepoint_no_loglevel(writer
, event
);
1267 case LTTNG_EVENT_FUNCTION
:
1269 case LTTNG_EVENT_PROBE
:
1270 ret
= mi_lttng_event_function_probe(writer
, event
);
1272 case LTTNG_EVENT_FUNCTION_ENTRY
:
1273 ret
= mi_lttng_event_function_entry(writer
, event
);
1275 case LTTNG_EVENT_ALL
:
1282 ret
= mi_lttng_writer_close_element(writer
);
1290 int mi_lttng_trackers_open(struct mi_writer
*writer
)
1292 return mi_lttng_writer_open_element(writer
, config_element_trackers
);
1296 int mi_lttng_pid_tracker_open(struct mi_writer
*writer
)
1300 /* Open element pid_tracker */
1301 ret
= mi_lttng_writer_open_element(writer
, config_element_pid_tracker
);
1306 /* Open targets element */
1307 ret
= mi_lttng_targets_open(writer
);
1313 int mi_lttng_pids_open(struct mi_writer
*writer
)
1315 return mi_lttng_writer_open_element(writer
, config_element_pids
);
1319 * TODO: move the listing of pid for user agent to process semantic on
1320 * mi api bump. The use of process element break the mi api.
1323 int mi_lttng_pid(struct mi_writer
*writer
, pid_t pid
, const char *name
,
1328 /* Open pid process */
1329 ret
= mi_lttng_writer_open_element(writer
, config_element_pid
);
1334 /* Writing pid number */
1335 ret
= mi_lttng_writer_write_element_signed_int(writer
,
1336 mi_lttng_element_pid_id
, (int)pid
);
1341 /* Writing name of the process */
1343 ret
= mi_lttng_writer_write_element_string(writer
, config_element_name
,
1352 ret
= mi_lttng_writer_close_element(writer
);
1360 int mi_lttng_targets_open(struct mi_writer
*writer
)
1362 return mi_lttng_writer_open_element(writer
,
1363 config_element_targets
);
1367 int mi_lttng_pid_target(struct mi_writer
*writer
, pid_t pid
, int is_open
)
1371 ret
= mi_lttng_writer_open_element(writer
,
1372 config_element_target_pid
);
1377 /* Writing pid number
1378 * Special case for element all on track untrack command
1379 * All pid is represented as wildcard *
1381 if ((int) pid
== -1) {
1382 ret
= mi_lttng_writer_write_element_string(writer
,
1384 mi_lttng_element_track_untrack_all_wildcard
);
1386 ret
= mi_lttng_writer_write_element_signed_int(writer
,
1387 config_element_pid
, (int) pid
);
1394 ret
= mi_lttng_writer_close_element(writer
);
1405 int mi_lttng_event_fields_open(struct mi_writer
*writer
)
1407 return mi_lttng_writer_open_element(writer
, mi_lttng_element_event_fields
);
1411 int mi_lttng_event_field(struct mi_writer
*writer
,
1412 struct lttng_event_field
*field
)
1416 if (!field
->field_name
[0]) {
1422 ret
= mi_lttng_writer_open_element(writer
, mi_lttng_element_event_field
);
1427 if (!field
->field_name
[0]) {
1432 ret
= mi_lttng_writer_write_element_string(writer
, config_element_name
,
1439 ret
= mi_lttng_writer_write_element_string(writer
, config_element_type
,
1440 mi_lttng_eventfieldtype_string(field
->type
));
1446 ret
= mi_lttng_writer_write_element_signed_int(writer
,
1447 mi_lttng_element_nowrite
, field
->nowrite
);
1453 /* Close field element */
1454 ret
= mi_lttng_writer_close_element(writer
);
1461 int mi_lttng_perf_counter_context(struct mi_writer
*writer
,
1462 struct lttng_event_perf_counter_ctx
*perf_context
)
1466 /* Open perf_counter_context */
1467 ret
= mi_lttng_writer_open_element(writer
,
1468 mi_lttng_element_perf_counter_context
);
1474 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1475 config_element_type
, perf_context
->type
);
1481 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1482 config_element_config
, perf_context
->config
);
1487 /* Name of the perf counter */
1488 ret
= mi_lttng_writer_write_element_string(writer
,
1489 config_element_name
, perf_context
->name
);
1494 /* Close perf_counter_context */
1495 ret
= mi_lttng_writer_close_element(writer
);
1501 int mi_lttng_app_context(struct mi_writer
*writer
,
1502 const char *provider_name
, const char *ctx_name
)
1507 ret
= mi_lttng_writer_open_element(writer
,
1508 config_element_context_app
);
1514 ret
= mi_lttng_writer_write_element_string(writer
,
1515 config_element_context_app_provider_name
,
1522 ret
= mi_lttng_writer_write_element_string(writer
,
1523 config_element_context_app_ctx_name
, ctx_name
);
1529 ret
= mi_lttng_writer_close_element(writer
);
1535 int mi_lttng_context(struct mi_writer
*writer
,
1536 struct lttng_event_context
*context
, int is_open
)
1541 ret
= mi_lttng_writer_open_element(writer
, config_element_context
);
1546 /* Special case for PERF_*_COUNTER
1547 * print the lttng_event_perf_counter_ctx*/
1548 switch (context
->ctx
) {
1549 case LTTNG_EVENT_CONTEXT_PERF_COUNTER
:
1550 case LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER
:
1551 case LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER
:
1553 struct lttng_event_perf_counter_ctx
*perf_context
=
1554 &context
->u
.perf_counter
;
1555 ret
= mi_lttng_perf_counter_context(writer
, perf_context
);
1561 case LTTNG_EVENT_CONTEXT_APP_CONTEXT
:
1563 ret
= mi_lttng_app_context(writer
,
1564 context
->u
.app_ctx
.provider_name
,
1565 context
->u
.app_ctx
.ctx_name
);
1573 const char *type_string
= mi_lttng_event_contexttype_string(
1576 ret
= -LTTNG_ERR_INVALID
;
1580 /* Print context type */
1581 ret
= mi_lttng_writer_write_element_string(writer
,
1582 config_element_type
, type_string
);
1589 ret
= mi_lttng_writer_close_element(writer
);
1597 int mi_lttng_snapshot_output_session_name(struct mi_writer
*writer
,
1598 const char *session_name
)
1602 /* Open session element */
1603 ret
= mi_lttng_writer_open_element(writer
, config_element_session
);
1608 /* Snapshot output list for current session name */
1609 ret
= mi_lttng_writer_write_element_string(writer
, config_element_name
,
1615 /* Open element snapshots (sequence one snapshot) */
1616 ret
= mi_lttng_writer_open_element(writer
, mi_lttng_element_snapshots
);
1626 int mi_lttng_snapshot_list_output(struct mi_writer
*writer
,
1627 struct lttng_snapshot_output
*output
)
1631 /* Open element snapshot output */
1632 ret
= mi_lttng_writer_open_element(writer
,
1633 mi_lttng_element_command_snapshot
);
1638 /* ID of the snapshot output */
1639 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1640 mi_lttng_element_id
, output
->id
);
1645 /* Name of the output */
1646 ret
= mi_lttng_writer_write_element_string(writer
, config_element_name
,
1652 /* Destination of the output (ctrl_url)*/
1653 ret
= mi_lttng_writer_write_element_string(writer
,
1654 mi_lttng_element_snapshot_ctrl_url
, output
->ctrl_url
);
1659 /* Destination of the output (data_url) */
1660 ret
= mi_lttng_writer_write_element_string(writer
,
1661 mi_lttng_element_snapshot_data_url
, output
->data_url
);
1666 /* total size of all stream combined */
1667 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1668 mi_lttng_element_snapshot_max_size
, output
->max_size
);
1673 /* Close snapshot output element */
1674 ret
= mi_lttng_writer_close_element(writer
);
1681 int mi_lttng_snapshot_del_output(struct mi_writer
*writer
, int id
,
1682 const char *name
, const char *current_session_name
)
1686 /* Open element del_snapshot */
1687 ret
= mi_lttng_writer_open_element(writer
,
1688 mi_lttng_element_command_snapshot
);
1694 if (id
!= UINT32_MAX
) {
1695 /* "Snapshot output "id" successfully deleted
1696 * for "current_session_name"
1697 * ID of the snapshot output
1699 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1700 mi_lttng_element_id
, id
);
1705 /* "Snapshot output "name" successfully deleted
1706 * for session "current_session_name"
1707 * Name of the output
1709 ret
= mi_lttng_writer_write_element_string(writer
, config_element_name
,
1716 /* Snapshot was deleted for session "current_session_name"*/
1717 ret
= mi_lttng_writer_write_element_string(writer
,
1718 mi_lttng_element_snapshot_session_name
,
1719 current_session_name
);
1724 /* Close snapshot element */
1725 ret
= mi_lttng_writer_close_element(writer
);
1732 int mi_lttng_snapshot_add_output(struct mi_writer
*writer
,
1733 const char *current_session_name
, const char *n_ptr
,
1734 struct lttng_snapshot_output
*output
)
1738 /* Open element snapshot */
1739 ret
= mi_lttng_writer_open_element(writer
,
1740 mi_lttng_element_command_snapshot
);
1745 /* Snapshot output id */
1746 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1747 mi_lttng_element_id
, output
->id
);
1752 /* Snapshot output names */
1753 ret
= mi_lttng_writer_write_element_string(writer
,
1754 config_element_name
, n_ptr
);
1759 /* Destination of the output (ctrl_url)*/
1760 ret
= mi_lttng_writer_write_element_string(writer
,
1761 mi_lttng_element_snapshot_ctrl_url
, output
->ctrl_url
);
1766 /* Snapshot added for session "current_session_name"*/
1767 ret
= mi_lttng_writer_write_element_string(writer
,
1768 mi_lttng_element_snapshot_session_name
, current_session_name
);
1773 /* total size of all stream combined */
1774 ret
= mi_lttng_writer_write_element_unsigned_int(writer
,
1775 mi_lttng_element_snapshot_max_size
, output
->max_size
);
1780 /* Close snapshot element */
1781 ret
= mi_lttng_writer_close_element(writer
);
1788 int mi_lttng_snapshot_record(struct mi_writer
*writer
,
1789 const char *current_session_name
, const char *url
,
1790 const char *cmdline_ctrl_url
, const char *cmdline_data_url
)
1794 /* Open element snapshot */
1795 ret
= mi_lttng_writer_open_element(writer
,
1796 mi_lttng_element_command_snapshot
);
1802 * If a valid an URL was given, serialize it,
1803 * else take the command line data and ctrl urls*/
1805 /* Destination of the output (ctrl_url)*/
1806 ret
= mi_lttng_writer_write_element_string(writer
,
1807 mi_lttng_element_snapshot_ctrl_url
, url
);
1811 } else if (cmdline_ctrl_url
) {
1812 /* Destination of the output (ctrl_url)*/
1813 ret
= mi_lttng_writer_write_element_string(writer
,
1814 mi_lttng_element_snapshot_ctrl_url
, cmdline_ctrl_url
);
1819 /* Destination of the output (data_url) */
1820 ret
= mi_lttng_writer_write_element_string(writer
,
1821 mi_lttng_element_snapshot_data_url
, cmdline_data_url
);
1827 /* Close record_snapshot element */
1828 ret
= mi_lttng_writer_close_element(writer
);