Commit | Line | Data |
---|---|---|
ab0ee2ca | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
ab0ee2ca | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
ab0ee2ca | 5 | * |
ab0ee2ca JG |
6 | */ |
7 | ||
c9e313bc | 8 | #include "notification-thread-commands.hpp" |
28ab034a JG |
9 | #include "notification-thread.hpp" |
10 | ||
c9e313bc | 11 | #include <common/error.hpp> |
28ab034a JG |
12 | |
13 | #include <lttng/lttng-error.h> | |
14 | #include <lttng/trigger/trigger.h> | |
15 | ||
ab0ee2ca | 16 | #include <inttypes.h> |
28ab034a JG |
17 | #include <stdint.h> |
18 | #include <unistd.h> | |
ab0ee2ca | 19 | |
28ab034a | 20 | static void init_notification_thread_command(struct notification_thread_command *cmd) |
ab0ee2ca | 21 | { |
ab0ee2ca JG |
22 | CDS_INIT_LIST_HEAD(&cmd->cmd_list_node); |
23 | } | |
24 | ||
28ab034a JG |
25 | static int run_command_wait(struct notification_thread_handle *handle, |
26 | struct notification_thread_command *cmd) | |
ab0ee2ca JG |
27 | { |
28 | int ret; | |
29 | uint64_t notification_counter = 1; | |
30 | ||
32670d71 JG |
31 | lttng::synchro::waiter command_completion_waiter; |
32 | cmd->command_completed_waker.emplace(command_completion_waiter.get_waker()); | |
33 | ||
ab0ee2ca JG |
34 | pthread_mutex_lock(&handle->cmd_queue.lock); |
35 | /* Add to queue. */ | |
28ab034a | 36 | cds_list_add_tail(&cmd->cmd_list_node, &handle->cmd_queue.list); |
ab0ee2ca | 37 | /* Wake-up thread. */ |
28ab034a JG |
38 | ret = lttng_write( |
39 | handle->cmd_queue.event_fd, ¬ification_counter, sizeof(notification_counter)); | |
58d3fed5 | 40 | if (ret != sizeof(notification_counter)) { |
ab0ee2ca JG |
41 | PERROR("write to notification thread's queue event fd"); |
42 | /* | |
43 | * Remove the command from the list so the notification | |
44 | * thread does not process it. | |
45 | */ | |
46 | cds_list_del(&cmd->cmd_list_node); | |
47 | goto error_unlock_queue; | |
48 | } | |
49 | pthread_mutex_unlock(&handle->cmd_queue.lock); | |
50 | ||
11927a78 JG |
51 | command_completion_waiter.wait(); |
52 | ; | |
ab0ee2ca JG |
53 | return 0; |
54 | error_unlock_queue: | |
55 | pthread_mutex_unlock(&handle->cmd_queue.lock); | |
56 | return -1; | |
57 | } | |
58 | ||
28ab034a JG |
59 | static struct notification_thread_command * |
60 | notification_thread_command_copy(const struct notification_thread_command *original_cmd) | |
0ab399e0 JG |
61 | { |
62 | struct notification_thread_command *new_cmd; | |
63 | ||
32670d71 JG |
64 | try { |
65 | new_cmd = new notification_thread_command; | |
11927a78 | 66 | } catch (const std::bad_alloc& e) { |
32670d71 JG |
67 | ERR("Failed to allocate notification_thread_command: %s", e.what()); |
68 | return nullptr; | |
0ab399e0 JG |
69 | } |
70 | ||
71 | *new_cmd = *original_cmd; | |
72 | init_notification_thread_command(new_cmd); | |
0ab399e0 JG |
73 | return new_cmd; |
74 | } | |
75 | ||
28ab034a JG |
76 | static int run_command_no_wait(struct notification_thread_handle *handle, |
77 | const struct notification_thread_command *in_cmd) | |
0ab399e0 JG |
78 | { |
79 | int ret; | |
80 | uint64_t notification_counter = 1; | |
28ab034a | 81 | struct notification_thread_command *new_cmd = notification_thread_command_copy(in_cmd); |
0ab399e0 JG |
82 | |
83 | if (!new_cmd) { | |
84 | goto error; | |
85 | } | |
86 | new_cmd->is_async = true; | |
87 | ||
88 | pthread_mutex_lock(&handle->cmd_queue.lock); | |
89 | /* Add to queue. */ | |
28ab034a | 90 | cds_list_add_tail(&new_cmd->cmd_list_node, &handle->cmd_queue.list); |
0ab399e0 | 91 | /* Wake-up thread. */ |
28ab034a JG |
92 | ret = lttng_write( |
93 | handle->cmd_queue.event_fd, ¬ification_counter, sizeof(notification_counter)); | |
0ab399e0 JG |
94 | if (ret != sizeof(notification_counter)) { |
95 | PERROR("write to notification thread's queue event fd"); | |
96 | /* | |
97 | * Remove the command from the list so the notification | |
98 | * thread does not process it. | |
99 | */ | |
100 | cds_list_del(&new_cmd->cmd_list_node); | |
101 | goto error_unlock_queue; | |
102 | } | |
32670d71 | 103 | |
0ab399e0 JG |
104 | pthread_mutex_unlock(&handle->cmd_queue.lock); |
105 | return 0; | |
106 | error_unlock_queue: | |
32670d71 JG |
107 | |
108 | delete new_cmd; | |
0ab399e0 JG |
109 | pthread_mutex_unlock(&handle->cmd_queue.lock); |
110 | error: | |
111 | return -1; | |
112 | } | |
113 | ||
28ab034a JG |
114 | enum lttng_error_code |
115 | notification_thread_command_register_trigger(struct notification_thread_handle *handle, | |
116 | struct lttng_trigger *trigger, | |
117 | bool is_trigger_anonymous) | |
ab0ee2ca JG |
118 | { |
119 | int ret; | |
120 | enum lttng_error_code ret_code; | |
32670d71 | 121 | notification_thread_command cmd; |
ab0ee2ca | 122 | |
a0377dfe | 123 | LTTNG_ASSERT(trigger); |
ab0ee2ca JG |
124 | init_notification_thread_command(&cmd); |
125 | ||
126 | cmd.type = NOTIFICATION_COMMAND_TYPE_REGISTER_TRIGGER; | |
242388e4 | 127 | lttng_trigger_get(trigger); |
ac16173e | 128 | cmd.parameters.register_trigger.trigger = trigger; |
28ab034a | 129 | cmd.parameters.register_trigger.is_trigger_anonymous = is_trigger_anonymous; |
ab0ee2ca JG |
130 | |
131 | ret = run_command_wait(handle, &cmd); | |
132 | if (ret) { | |
133 | ret_code = LTTNG_ERR_UNK; | |
134 | goto end; | |
135 | } | |
136 | ret_code = cmd.reply_code; | |
137 | end: | |
138 | return ret_code; | |
139 | } | |
140 | ||
28ab034a JG |
141 | enum lttng_error_code |
142 | notification_thread_command_unregister_trigger(struct notification_thread_handle *handle, | |
143 | const struct lttng_trigger *trigger) | |
ab0ee2ca JG |
144 | { |
145 | int ret; | |
146 | enum lttng_error_code ret_code; | |
32670d71 | 147 | notification_thread_command cmd; |
ab0ee2ca JG |
148 | |
149 | init_notification_thread_command(&cmd); | |
150 | ||
151 | cmd.type = NOTIFICATION_COMMAND_TYPE_UNREGISTER_TRIGGER; | |
ac16173e | 152 | cmd.parameters.unregister_trigger.trigger = trigger; |
ab0ee2ca JG |
153 | |
154 | ret = run_command_wait(handle, &cmd); | |
155 | if (ret) { | |
156 | ret_code = LTTNG_ERR_UNK; | |
157 | goto end; | |
158 | } | |
159 | ret_code = cmd.reply_code; | |
160 | end: | |
161 | return ret_code; | |
162 | } | |
163 | ||
28ab034a JG |
164 | enum lttng_error_code |
165 | notification_thread_command_add_session(struct notification_thread_handle *handle, | |
166 | uint64_t session_id, | |
167 | const char *session_name, | |
168 | uid_t session_uid, | |
169 | gid_t session_gid) | |
139a8d25 JG |
170 | { |
171 | int ret; | |
172 | enum lttng_error_code ret_code; | |
32670d71 | 173 | notification_thread_command cmd; |
139a8d25 JG |
174 | |
175 | init_notification_thread_command(&cmd); | |
176 | ||
177 | cmd.type = NOTIFICATION_COMMAND_TYPE_ADD_SESSION; | |
178 | cmd.parameters.add_session.session_id = session_id; | |
179 | cmd.parameters.add_session.session_name = session_name; | |
180 | cmd.parameters.add_session.session_uid = session_uid; | |
181 | cmd.parameters.add_session.session_gid = session_gid; | |
182 | ||
183 | ret = run_command_wait(handle, &cmd); | |
184 | if (ret) { | |
185 | ret_code = LTTNG_ERR_UNK; | |
186 | goto end; | |
187 | } | |
188 | ret_code = cmd.reply_code; | |
189 | end: | |
190 | return ret_code; | |
191 | } | |
192 | ||
28ab034a JG |
193 | enum lttng_error_code |
194 | notification_thread_command_remove_session(struct notification_thread_handle *handle, | |
195 | uint64_t session_id) | |
139a8d25 JG |
196 | { |
197 | int ret; | |
198 | enum lttng_error_code ret_code; | |
32670d71 | 199 | notification_thread_command cmd; |
139a8d25 JG |
200 | |
201 | init_notification_thread_command(&cmd); | |
202 | ||
203 | cmd.type = NOTIFICATION_COMMAND_TYPE_REMOVE_SESSION; | |
204 | cmd.parameters.remove_session.session_id = session_id; | |
205 | ||
206 | ret = run_command_wait(handle, &cmd); | |
207 | if (ret) { | |
208 | ret_code = LTTNG_ERR_UNK; | |
209 | goto end; | |
210 | } | |
211 | ret_code = cmd.reply_code; | |
212 | end: | |
213 | return ret_code; | |
214 | } | |
215 | ||
28ab034a JG |
216 | enum lttng_error_code |
217 | notification_thread_command_add_channel(struct notification_thread_handle *handle, | |
218 | uint64_t session_id, | |
219 | char *channel_name, | |
220 | uint64_t key, | |
221 | enum lttng_domain_type domain, | |
222 | uint64_t capacity) | |
ab0ee2ca JG |
223 | { |
224 | int ret; | |
225 | enum lttng_error_code ret_code; | |
32670d71 | 226 | notification_thread_command cmd; |
ab0ee2ca JG |
227 | |
228 | init_notification_thread_command(&cmd); | |
229 | ||
230 | cmd.type = NOTIFICATION_COMMAND_TYPE_ADD_CHANNEL; | |
139a8d25 | 231 | cmd.parameters.add_channel.session.id = session_id; |
8abe313a JG |
232 | cmd.parameters.add_channel.channel.name = channel_name; |
233 | cmd.parameters.add_channel.channel.key = key; | |
234 | cmd.parameters.add_channel.channel.domain = domain; | |
235 | cmd.parameters.add_channel.channel.capacity = capacity; | |
ab0ee2ca JG |
236 | |
237 | ret = run_command_wait(handle, &cmd); | |
238 | if (ret) { | |
239 | ret_code = LTTNG_ERR_UNK; | |
240 | goto end; | |
241 | } | |
242 | ret_code = cmd.reply_code; | |
243 | end: | |
244 | return ret_code; | |
245 | } | |
246 | ||
247 | enum lttng_error_code notification_thread_command_remove_channel( | |
28ab034a | 248 | struct notification_thread_handle *handle, uint64_t key, enum lttng_domain_type domain) |
ab0ee2ca JG |
249 | { |
250 | int ret; | |
251 | enum lttng_error_code ret_code; | |
32670d71 | 252 | notification_thread_command cmd; |
ab0ee2ca JG |
253 | |
254 | init_notification_thread_command(&cmd); | |
255 | ||
256 | cmd.type = NOTIFICATION_COMMAND_TYPE_REMOVE_CHANNEL; | |
257 | cmd.parameters.remove_channel.key = key; | |
258 | cmd.parameters.remove_channel.domain = domain; | |
259 | ||
260 | ret = run_command_wait(handle, &cmd); | |
261 | if (ret) { | |
262 | ret_code = LTTNG_ERR_UNK; | |
263 | goto end; | |
264 | } | |
265 | ret_code = cmd.reply_code; | |
266 | end: | |
267 | return ret_code; | |
268 | } | |
269 | ||
28ab034a JG |
270 | enum lttng_error_code |
271 | notification_thread_command_session_rotation_ongoing(struct notification_thread_handle *handle, | |
272 | uint64_t session_id, | |
273 | uint64_t trace_archive_chunk_id) | |
731c1b12 JG |
274 | { |
275 | int ret; | |
276 | enum lttng_error_code ret_code; | |
32670d71 | 277 | notification_thread_command cmd; |
731c1b12 JG |
278 | |
279 | init_notification_thread_command(&cmd); | |
280 | ||
281 | cmd.type = NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_ONGOING; | |
139a8d25 | 282 | cmd.parameters.session_rotation.session_id = session_id; |
28ab034a | 283 | cmd.parameters.session_rotation.trace_archive_chunk_id = trace_archive_chunk_id; |
731c1b12 JG |
284 | |
285 | ret = run_command_wait(handle, &cmd); | |
286 | if (ret) { | |
287 | ret_code = LTTNG_ERR_UNK; | |
288 | goto end; | |
289 | } | |
290 | ret_code = cmd.reply_code; | |
291 | end: | |
292 | return ret_code; | |
293 | } | |
294 | ||
295 | enum lttng_error_code notification_thread_command_session_rotation_completed( | |
28ab034a JG |
296 | struct notification_thread_handle *handle, |
297 | uint64_t session_id, | |
298 | uint64_t trace_archive_chunk_id, | |
299 | struct lttng_trace_archive_location *location) | |
731c1b12 JG |
300 | { |
301 | int ret; | |
302 | enum lttng_error_code ret_code; | |
32670d71 | 303 | notification_thread_command cmd; |
731c1b12 JG |
304 | |
305 | init_notification_thread_command(&cmd); | |
306 | ||
307 | cmd.type = NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_COMPLETED; | |
139a8d25 | 308 | cmd.parameters.session_rotation.session_id = session_id; |
28ab034a | 309 | cmd.parameters.session_rotation.trace_archive_chunk_id = trace_archive_chunk_id; |
731c1b12 JG |
310 | cmd.parameters.session_rotation.location = location; |
311 | ||
312 | ret = run_command_wait(handle, &cmd); | |
313 | if (ret) { | |
314 | ret_code = LTTNG_ERR_UNK; | |
315 | goto end; | |
316 | } | |
317 | ret_code = cmd.reply_code; | |
318 | end: | |
319 | return ret_code; | |
320 | } | |
321 | ||
28ab034a JG |
322 | enum lttng_error_code |
323 | notification_thread_command_add_tracer_event_source(struct notification_thread_handle *handle, | |
324 | int tracer_event_source_fd, | |
325 | enum lttng_domain_type domain) | |
d02d7404 JR |
326 | { |
327 | int ret; | |
328 | enum lttng_error_code ret_code; | |
32670d71 | 329 | notification_thread_command cmd; |
d02d7404 | 330 | |
a0377dfe | 331 | LTTNG_ASSERT(tracer_event_source_fd >= 0); |
d02d7404 JR |
332 | |
333 | init_notification_thread_command(&cmd); | |
334 | ||
335 | cmd.type = NOTIFICATION_COMMAND_TYPE_ADD_TRACER_EVENT_SOURCE; | |
28ab034a | 336 | cmd.parameters.tracer_event_source.tracer_event_source_fd = tracer_event_source_fd; |
d02d7404 JR |
337 | cmd.parameters.tracer_event_source.domain = domain; |
338 | ||
339 | ret = run_command_wait(handle, &cmd); | |
340 | if (ret) { | |
341 | ret_code = LTTNG_ERR_UNK; | |
342 | goto end; | |
343 | } | |
344 | ||
345 | ret_code = cmd.reply_code; | |
346 | end: | |
347 | return ret_code; | |
348 | } | |
349 | ||
28ab034a JG |
350 | enum lttng_error_code |
351 | notification_thread_command_remove_tracer_event_source(struct notification_thread_handle *handle, | |
352 | int tracer_event_source_fd) | |
d02d7404 JR |
353 | { |
354 | int ret; | |
355 | enum lttng_error_code ret_code; | |
32670d71 | 356 | notification_thread_command cmd; |
d02d7404 JR |
357 | |
358 | init_notification_thread_command(&cmd); | |
359 | ||
360 | cmd.type = NOTIFICATION_COMMAND_TYPE_REMOVE_TRACER_EVENT_SOURCE; | |
28ab034a | 361 | cmd.parameters.tracer_event_source.tracer_event_source_fd = tracer_event_source_fd; |
d02d7404 JR |
362 | |
363 | ret = run_command_wait(handle, &cmd); | |
364 | if (ret) { | |
365 | ret_code = LTTNG_ERR_UNK; | |
366 | goto end; | |
367 | } | |
368 | ||
369 | ret_code = cmd.reply_code; | |
370 | end: | |
371 | return ret_code; | |
372 | } | |
373 | ||
fbc9f37d | 374 | enum lttng_error_code notification_thread_command_list_triggers( |
28ab034a | 375 | struct notification_thread_handle *handle, uid_t uid, struct lttng_triggers **triggers) |
fbc9f37d JR |
376 | { |
377 | int ret; | |
378 | enum lttng_error_code ret_code; | |
32670d71 | 379 | notification_thread_command cmd; |
fbc9f37d | 380 | |
a0377dfe FD |
381 | LTTNG_ASSERT(handle); |
382 | LTTNG_ASSERT(triggers); | |
fbc9f37d JR |
383 | |
384 | init_notification_thread_command(&cmd); | |
385 | ||
386 | cmd.type = NOTIFICATION_COMMAND_TYPE_LIST_TRIGGERS; | |
387 | cmd.parameters.list_triggers.uid = uid; | |
388 | ||
389 | ret = run_command_wait(handle, &cmd); | |
390 | if (ret) { | |
391 | ret_code = LTTNG_ERR_UNK; | |
392 | goto end; | |
393 | } | |
394 | ||
395 | ret_code = cmd.reply_code; | |
396 | *triggers = cmd.reply.list_triggers.triggers; | |
397 | ||
398 | end: | |
399 | return ret_code; | |
400 | } | |
401 | ||
28ab034a | 402 | void notification_thread_command_quit(struct notification_thread_handle *handle) |
ab0ee2ca JG |
403 | { |
404 | int ret; | |
32670d71 | 405 | notification_thread_command cmd; |
ab0ee2ca JG |
406 | |
407 | init_notification_thread_command(&cmd); | |
408 | ||
409 | cmd.type = NOTIFICATION_COMMAND_TYPE_QUIT; | |
410 | ret = run_command_wait(handle, &cmd); | |
a0377dfe | 411 | LTTNG_ASSERT(!ret && cmd.reply_code == LTTNG_OK); |
ab0ee2ca | 412 | } |
f2b3ef9f JG |
413 | |
414 | int notification_thread_client_communication_update( | |
28ab034a JG |
415 | struct notification_thread_handle *handle, |
416 | notification_client_id id, | |
417 | enum client_transmission_status transmission_status) | |
f2b3ef9f | 418 | { |
32670d71 | 419 | notification_thread_command cmd; |
f2b3ef9f JG |
420 | |
421 | init_notification_thread_command(&cmd); | |
422 | ||
423 | cmd.type = NOTIFICATION_COMMAND_TYPE_CLIENT_COMMUNICATION_UPDATE; | |
424 | cmd.parameters.client_communication_update.id = id; | |
425 | cmd.parameters.client_communication_update.status = transmission_status; | |
426 | return run_command_no_wait(handle, &cmd); | |
427 | } | |
b9a8d78f | 428 | |
28ab034a JG |
429 | enum lttng_error_code |
430 | notification_thread_command_get_trigger(struct notification_thread_handle *handle, | |
431 | const struct lttng_trigger *trigger, | |
432 | struct lttng_trigger **real_trigger) | |
8790759c FD |
433 | { |
434 | int ret; | |
435 | enum lttng_error_code ret_code; | |
32670d71 | 436 | notification_thread_command cmd; |
8790759c FD |
437 | |
438 | init_notification_thread_command(&cmd); | |
439 | ||
440 | cmd.type = NOTIFICATION_COMMAND_TYPE_GET_TRIGGER; | |
441 | cmd.parameters.get_trigger.trigger = trigger; | |
442 | ret = run_command_wait(handle, &cmd); | |
443 | if (ret) { | |
444 | ret_code = LTTNG_ERR_UNK; | |
445 | goto end; | |
446 | } | |
447 | ||
448 | ret_code = cmd.reply_code; | |
449 | *real_trigger = cmd.reply.get_trigger.trigger; | |
450 | ||
451 | end: | |
452 | return ret_code; | |
453 | } | |
454 | ||
82b3cbf4 JR |
455 | /* |
456 | * Takes ownership of the payload if present. | |
457 | */ | |
82b3cbf4 | 458 | struct lttng_event_notifier_notification *lttng_event_notifier_notification_create( |
28ab034a | 459 | uint64_t tracer_token, enum lttng_domain_type domain, char *payload, size_t payload_size) |
b9a8d78f | 460 | { |
cd9adb8b | 461 | struct lttng_event_notifier_notification *notification = nullptr; |
b9a8d78f | 462 | |
a0377dfe FD |
463 | LTTNG_ASSERT(domain != LTTNG_DOMAIN_NONE); |
464 | LTTNG_ASSERT((payload && payload_size) || (!payload && !payload_size)); | |
b9a8d78f | 465 | |
64803277 | 466 | notification = zmalloc<lttng_event_notifier_notification>(); |
cd9adb8b | 467 | if (notification == nullptr) { |
bd0514a5 | 468 | ERR("Error allocating notification"); |
b9a8d78f FD |
469 | goto end; |
470 | } | |
471 | ||
472 | notification->tracer_token = tracer_token; | |
473 | notification->type = domain; | |
82b3cbf4 JR |
474 | notification->capture_buffer = payload; |
475 | notification->capture_buf_size = payload_size; | |
b9a8d78f FD |
476 | |
477 | end: | |
478 | return notification; | |
479 | } | |
480 | ||
b9a8d78f | 481 | void lttng_event_notifier_notification_destroy( |
28ab034a | 482 | struct lttng_event_notifier_notification *notification) |
b9a8d78f FD |
483 | { |
484 | if (!notification) { | |
485 | return; | |
486 | } | |
487 | ||
82b3cbf4 | 488 | free(notification->capture_buffer); |
b9a8d78f FD |
489 | free(notification); |
490 | } |