Commit | Line | Data |
---|---|---|
97ee3a89 DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
bdf64013 | 3 | * Copyright (C) 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com> |
97ee3a89 | 4 | * |
d14d33bf AM |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License, version 2 only, | |
7 | * as published by the Free Software Foundation. | |
97ee3a89 | 8 | * |
d14d33bf AM |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
97ee3a89 | 13 | * |
d14d33bf AM |
14 | * You should have received a copy of the GNU General Public License along |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
97ee3a89 DG |
17 | */ |
18 | ||
6c1c0768 | 19 | #define _LGPL_SOURCE |
97ee3a89 DG |
20 | #include <stdio.h> |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <unistd.h> | |
d9bf3ca4 | 24 | #include <inttypes.h> |
97ee3a89 | 25 | |
990570ed DG |
26 | #include <common/common.h> |
27 | #include <common/defaults.h> | |
97ee3a89 | 28 | |
7972aab2 | 29 | #include "buffer-registry.h" |
97ee3a89 | 30 | #include "trace-ust.h" |
0b2dc8df | 31 | #include "utils.h" |
a9ad0c8f | 32 | #include "ust-app.h" |
7c1d2758 | 33 | #include "agent.h" |
97ee3a89 | 34 | |
025faf73 DG |
35 | /* |
36 | * Match function for the events hash table lookup. | |
37 | * | |
38 | * Matches by name only. Used by the disable command. | |
39 | */ | |
18eace3b DG |
40 | int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node, |
41 | const void *_key) | |
42 | { | |
43 | struct ltt_ust_event *event; | |
44 | const char *name; | |
45 | ||
46 | assert(node); | |
47 | assert(_key); | |
48 | ||
49 | event = caa_container_of(node, struct ltt_ust_event, node.node); | |
50 | name = _key; | |
51 | ||
52 | /* Event name */ | |
53 | if (strncmp(event->attr.name, name, sizeof(event->attr.name)) != 0) { | |
54 | goto no_match; | |
55 | } | |
56 | ||
025faf73 | 57 | /* Match */ |
18eace3b DG |
58 | return 1; |
59 | ||
60 | no_match: | |
61 | return 0; | |
62 | } | |
63 | ||
025faf73 DG |
64 | /* |
65 | * Match function for the hash table lookup. | |
66 | * | |
67 | * It matches an ust event based on three attributes which are the event name, | |
68 | * the filter bytecode and the loglevel. | |
69 | */ | |
18eace3b DG |
70 | int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key) |
71 | { | |
72 | struct ltt_ust_event *event; | |
73 | const struct ltt_ust_ht_key *key; | |
2106efa0 | 74 | int ev_loglevel_value; |
19a97244 | 75 | int ll_match; |
18eace3b DG |
76 | |
77 | assert(node); | |
78 | assert(_key); | |
79 | ||
80 | event = caa_container_of(node, struct ltt_ust_event, node.node); | |
81 | key = _key; | |
2106efa0 | 82 | ev_loglevel_value = event->attr.loglevel; |
18eace3b | 83 | |
f19e9f8b | 84 | /* Match the 4 elements of the key: name, filter, loglevel, exclusions. */ |
18eace3b DG |
85 | |
86 | /* Event name */ | |
87 | if (strncmp(event->attr.name, key->name, sizeof(event->attr.name)) != 0) { | |
18eace3b DG |
88 | goto no_match; |
89 | } | |
90 | ||
b953b8cd | 91 | /* Event loglevel value and type. */ |
19a97244 PP |
92 | ll_match = loglevels_match(event->attr.loglevel_type, |
93 | ev_loglevel_value, key->loglevel_type, | |
94 | key->loglevel_value, LTTNG_UST_LOGLEVEL_ALL); | |
95 | ||
96 | if (!ll_match) { | |
b953b8cd | 97 | goto no_match; |
18eace3b DG |
98 | } |
99 | ||
100 | /* Only one of the filters is NULL, fail. */ | |
101 | if ((key->filter && !event->filter) || (!key->filter && event->filter)) { | |
18eace3b DG |
102 | goto no_match; |
103 | } | |
104 | ||
025faf73 DG |
105 | if (key->filter && event->filter) { |
106 | /* Both filters exists, check length followed by the bytecode. */ | |
107 | if (event->filter->len != key->filter->len || | |
108 | memcmp(event->filter->data, key->filter->data, | |
109 | event->filter->len) != 0) { | |
110 | goto no_match; | |
111 | } | |
18eace3b DG |
112 | } |
113 | ||
f19e9f8b JI |
114 | /* If only one of the exclusions is NULL, fail. */ |
115 | if ((key->exclusion && !event->exclusion) || (!key->exclusion && event->exclusion)) { | |
116 | goto no_match; | |
117 | } | |
118 | ||
119 | if (key->exclusion && event->exclusion) { | |
a5b7e00c PP |
120 | size_t i; |
121 | ||
122 | /* Check exclusion counts first. */ | |
123 | if (event->exclusion->count != key->exclusion->count) { | |
f19e9f8b JI |
124 | goto no_match; |
125 | } | |
a5b7e00c PP |
126 | |
127 | /* Compare names individually. */ | |
128 | for (i = 0; i < event->exclusion->count; ++i) { | |
129 | size_t j; | |
130 | bool found = false; | |
131 | const char *name_ev = | |
132 | LTTNG_EVENT_EXCLUSION_NAME_AT( | |
133 | event->exclusion, i); | |
134 | ||
135 | /* | |
136 | * Compare this exclusion name to all the key's | |
137 | * exclusion names. | |
138 | */ | |
139 | for (j = 0; j < key->exclusion->count; ++j) { | |
140 | const char *name_key = | |
141 | LTTNG_EVENT_EXCLUSION_NAME_AT( | |
142 | key->exclusion, j); | |
143 | ||
144 | if (!strncmp(name_ev, name_key, | |
145 | LTTNG_SYMBOL_NAME_LEN)) { | |
146 | /* Names match! */ | |
147 | found = true; | |
148 | break; | |
149 | } | |
150 | } | |
151 | ||
152 | /* | |
153 | * If the current exclusion name was not found amongst | |
154 | * the key's exclusion names, then there's no match. | |
155 | */ | |
156 | if (!found) { | |
157 | goto no_match; | |
158 | } | |
159 | } | |
f19e9f8b | 160 | } |
025faf73 DG |
161 | /* Match. */ |
162 | return 1; | |
18eace3b DG |
163 | |
164 | no_match: | |
165 | return 0; | |
18eace3b DG |
166 | } |
167 | ||
0177d773 | 168 | /* |
2223c96f DG |
169 | * Find the channel in the hashtable and return channel pointer. RCU read side |
170 | * lock MUST be acquired before calling this. | |
0177d773 | 171 | */ |
bec39940 | 172 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, |
f6a9efaa | 173 | char *name) |
0177d773 | 174 | { |
bec39940 DG |
175 | struct lttng_ht_node_str *node; |
176 | struct lttng_ht_iter iter; | |
0177d773 | 177 | |
85076754 MD |
178 | /* |
179 | * If we receive an empty string for channel name, it means the | |
180 | * default channel name is requested. | |
181 | */ | |
182 | if (name[0] == '\0') | |
183 | name = DEFAULT_CHANNEL_NAME; | |
184 | ||
bec39940 DG |
185 | lttng_ht_lookup(ht, (void *)name, &iter); |
186 | node = lttng_ht_iter_get_node_str(&iter); | |
f6a9efaa | 187 | if (node == NULL) { |
44d3bd01 DG |
188 | goto error; |
189 | } | |
190 | ||
f6a9efaa | 191 | DBG2("Trace UST channel %s found by name", name); |
0177d773 | 192 | |
f6a9efaa | 193 | return caa_container_of(node, struct ltt_ust_channel, node); |
97ee3a89 DG |
194 | |
195 | error: | |
f6a9efaa | 196 | DBG2("Trace UST channel %s not found by name", name); |
97ee3a89 DG |
197 | return NULL; |
198 | } | |
199 | ||
200 | /* | |
2223c96f DG |
201 | * Find the event in the hashtable and return event pointer. RCU read side lock |
202 | * MUST be acquired before calling this. | |
97ee3a89 | 203 | */ |
18eace3b | 204 | struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht, |
2106efa0 | 205 | char *name, struct lttng_filter_bytecode *filter, |
b953b8cd PP |
206 | enum lttng_ust_loglevel_type loglevel_type, int loglevel_value, |
207 | struct lttng_event_exclusion *exclusion) | |
97ee3a89 | 208 | { |
bec39940 DG |
209 | struct lttng_ht_node_str *node; |
210 | struct lttng_ht_iter iter; | |
18eace3b | 211 | struct ltt_ust_ht_key key; |
97ee3a89 | 212 | |
18eace3b DG |
213 | assert(name); |
214 | assert(ht); | |
215 | ||
216 | key.name = name; | |
217 | key.filter = filter; | |
b953b8cd PP |
218 | key.loglevel_type = loglevel_type; |
219 | key.loglevel_value = loglevel_value; | |
10646003 | 220 | key.exclusion = exclusion; |
18eace3b | 221 | |
18eace3b DG |
222 | cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed), |
223 | trace_ust_ht_match_event, &key, &iter.iter); | |
bec39940 | 224 | node = lttng_ht_iter_get_node_str(&iter); |
f6a9efaa | 225 | if (node == NULL) { |
97ee3a89 DG |
226 | goto error; |
227 | } | |
228 | ||
18eace3b | 229 | DBG2("Trace UST event %s found", key.name); |
f6a9efaa DG |
230 | |
231 | return caa_container_of(node, struct ltt_ust_event, node); | |
97ee3a89 DG |
232 | |
233 | error: | |
18eace3b | 234 | DBG2("Trace UST event %s NOT found", key.name); |
97ee3a89 DG |
235 | return NULL; |
236 | } | |
237 | ||
fefd409b DG |
238 | /* |
239 | * Lookup an agent in the session agents hash table by domain type and return | |
240 | * the object if found else NULL. | |
4da703ad JG |
241 | * |
242 | * RCU read side lock must be acquired before calling and only released | |
243 | * once the agent is no longer in scope or being used. | |
fefd409b DG |
244 | */ |
245 | struct agent *trace_ust_find_agent(struct ltt_ust_session *session, | |
246 | enum lttng_domain_type domain_type) | |
247 | { | |
248 | struct agent *agt = NULL; | |
249 | struct lttng_ht_node_u64 *node; | |
250 | struct lttng_ht_iter iter; | |
251 | uint64_t key; | |
252 | ||
253 | assert(session); | |
254 | ||
255 | DBG3("Trace ust agent lookup for domain %d", domain_type); | |
256 | ||
257 | key = domain_type; | |
258 | ||
259 | lttng_ht_lookup(session->agents, &key, &iter); | |
260 | node = lttng_ht_iter_get_node_u64(&iter); | |
261 | if (!node) { | |
262 | goto end; | |
263 | } | |
264 | agt = caa_container_of(node, struct agent, node); | |
265 | ||
266 | end: | |
267 | return agt; | |
268 | } | |
269 | ||
97ee3a89 DG |
270 | /* |
271 | * Allocate and initialize a ust session data structure. | |
272 | * | |
273 | * Return pointer to structure or NULL. | |
274 | */ | |
d9bf3ca4 | 275 | struct ltt_ust_session *trace_ust_create_session(uint64_t session_id) |
97ee3a89 DG |
276 | { |
277 | struct ltt_ust_session *lus; | |
278 | ||
279 | /* Allocate a new ltt ust session */ | |
ba7f0ae5 | 280 | lus = zmalloc(sizeof(struct ltt_ust_session)); |
97ee3a89 | 281 | if (lus == NULL) { |
ba7f0ae5 | 282 | PERROR("create ust session zmalloc"); |
a24248b3 | 283 | goto error_alloc; |
97ee3a89 DG |
284 | } |
285 | ||
286 | /* Init data structure */ | |
a991f516 | 287 | lus->id = session_id; |
14fb1ebe | 288 | lus->active = 0; |
97ee3a89 | 289 | |
84ad93e8 DG |
290 | /* Set default metadata channel attribute. */ |
291 | lus->metadata_attr.overwrite = DEFAULT_CHANNEL_OVERWRITE; | |
292 | lus->metadata_attr.subbuf_size = default_get_metadata_subbuf_size(); | |
293 | lus->metadata_attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM; | |
294 | lus->metadata_attr.switch_timer_interval = DEFAULT_METADATA_SWITCH_TIMER; | |
295 | lus->metadata_attr.read_timer_interval = DEFAULT_METADATA_READ_TIMER; | |
296 | lus->metadata_attr.output = LTTNG_UST_MMAP; | |
297 | ||
7972aab2 DG |
298 | /* |
299 | * Default buffer type. This can be changed through an enable channel | |
300 | * requesting a different type. Note that this can only be changed once | |
301 | * during the session lifetime which is at the first enable channel and | |
302 | * only before start. The flag buffer_type_changed indicates the status. | |
303 | */ | |
8692d4e5 | 304 | lus->buffer_type = LTTNG_BUFFER_PER_UID; |
7972aab2 DG |
305 | /* Once set to 1, the buffer_type is immutable for the session. */ |
306 | lus->buffer_type_changed = 0; | |
307 | /* Init it in case it get used after allocation. */ | |
308 | CDS_INIT_LIST_HEAD(&lus->buffer_reg_uid_list); | |
f6a9efaa DG |
309 | |
310 | /* Alloc UST global domain channels' HT */ | |
bec39940 | 311 | lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
fefd409b DG |
312 | /* Alloc agent hash table. */ |
313 | lus->agents = lttng_ht_new(0, LTTNG_HT_TYPE_U64); | |
44d3bd01 | 314 | |
a24248b3 MD |
315 | lus->tracker_list_vpid = lttng_tracker_list_create(); |
316 | if (!lus->tracker_list_vpid) { | |
317 | goto error; | |
318 | } | |
319 | lus->tracker_list_vuid = lttng_tracker_list_create(); | |
320 | if (!lus->tracker_list_vuid) { | |
321 | goto error; | |
322 | } | |
323 | lus->tracker_list_vgid = lttng_tracker_list_create(); | |
324 | if (!lus->tracker_list_vgid) { | |
325 | goto error; | |
326 | } | |
00e2e675 DG |
327 | lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL); |
328 | if (lus->consumer == NULL) { | |
a24248b3 | 329 | goto error; |
00e2e675 DG |
330 | } |
331 | ||
44d3bd01 DG |
332 | DBG2("UST trace session create successful"); |
333 | ||
97ee3a89 DG |
334 | return lus; |
335 | ||
a24248b3 MD |
336 | error: |
337 | lttng_tracker_list_destroy(lus->tracker_list_vpid); | |
338 | lttng_tracker_list_destroy(lus->tracker_list_vuid); | |
339 | lttng_tracker_list_destroy(lus->tracker_list_vgid); | |
0b2dc8df | 340 | ht_cleanup_push(lus->domain_global.channels); |
fefd409b | 341 | ht_cleanup_push(lus->agents); |
44844c29 | 342 | free(lus); |
a24248b3 | 343 | error_alloc: |
97ee3a89 DG |
344 | return NULL; |
345 | } | |
346 | ||
347 | /* | |
348 | * Allocate and initialize a ust channel data structure. | |
349 | * | |
350 | * Return pointer to structure or NULL. | |
351 | */ | |
51755dc8 JG |
352 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan, |
353 | enum lttng_domain_type domain) | |
97ee3a89 | 354 | { |
97ee3a89 DG |
355 | struct ltt_ust_channel *luc; |
356 | ||
0525e9ae | 357 | assert(chan); |
0525e9ae | 358 | |
37357452 | 359 | luc = zmalloc(sizeof(struct ltt_ust_channel)); |
97ee3a89 | 360 | if (luc == NULL) { |
df0f840b | 361 | PERROR("ltt_ust_channel zmalloc"); |
97ee3a89 DG |
362 | goto error; |
363 | } | |
364 | ||
51755dc8 JG |
365 | luc->domain = domain; |
366 | ||
44d3bd01 | 367 | /* Copy UST channel attributes */ |
48842b30 DG |
368 | luc->attr.overwrite = chan->attr.overwrite; |
369 | luc->attr.subbuf_size = chan->attr.subbuf_size; | |
370 | luc->attr.num_subbuf = chan->attr.num_subbuf; | |
371 | luc->attr.switch_timer_interval = chan->attr.switch_timer_interval; | |
372 | luc->attr.read_timer_interval = chan->attr.read_timer_interval; | |
6775595e | 373 | luc->attr.output = (enum lttng_ust_output) chan->attr.output; |
82b4ebce JG |
374 | luc->monitor_timer_interval = ((struct lttng_channel_extended *) |
375 | chan->attr.extended.ptr)->monitor_timer_interval; | |
491d1539 MD |
376 | luc->attr.u.s.blocking_timeout = ((struct lttng_channel_extended *) |
377 | chan->attr.extended.ptr)->blocking_timeout; | |
44d3bd01 DG |
378 | |
379 | /* Translate to UST output enum */ | |
380 | switch (luc->attr.output) { | |
381 | default: | |
382 | luc->attr.output = LTTNG_UST_MMAP; | |
383 | break; | |
97ee3a89 | 384 | } |
97ee3a89 | 385 | |
85076754 MD |
386 | /* |
387 | * If we receive an empty string for channel name, it means the | |
388 | * default channel name is requested. | |
389 | */ | |
390 | if (chan->name[0] == '\0') { | |
391 | strncpy(luc->name, DEFAULT_CHANNEL_NAME, sizeof(luc->name)); | |
392 | } else { | |
393 | /* Copy channel name */ | |
394 | strncpy(luc->name, chan->name, sizeof(luc->name)); | |
395 | } | |
97ee3a89 DG |
396 | luc->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; |
397 | ||
f6a9efaa | 398 | /* Init node */ |
bec39940 | 399 | lttng_ht_node_init_str(&luc->node, luc->name); |
31746f93 DG |
400 | CDS_INIT_LIST_HEAD(&luc->ctx_list); |
401 | ||
f6a9efaa | 402 | /* Alloc hash tables */ |
bec39940 DG |
403 | luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
404 | luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
f6a9efaa | 405 | |
1624d5b7 JD |
406 | /* On-disk circular buffer parameters */ |
407 | luc->tracefile_size = chan->attr.tracefile_size; | |
408 | luc->tracefile_count = chan->attr.tracefile_count; | |
409 | ||
f6a9efaa DG |
410 | DBG2("Trace UST channel %s created", luc->name); |
411 | ||
97ee3a89 | 412 | error: |
7972aab2 | 413 | return luc; |
97ee3a89 DG |
414 | } |
415 | ||
ad11a1d3 PP |
416 | /* |
417 | * Validates an exclusion list. | |
418 | * | |
419 | * Returns 0 if valid, negative value if invalid. | |
420 | */ | |
421 | static int validate_exclusion(struct lttng_event_exclusion *exclusion) | |
422 | { | |
423 | size_t i; | |
424 | int ret = 0; | |
425 | ||
426 | assert(exclusion); | |
427 | ||
428 | for (i = 0; i < exclusion->count; ++i) { | |
429 | size_t j; | |
430 | const char *name_a = | |
431 | LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, i); | |
432 | ||
433 | for (j = 0; j < i; ++j) { | |
434 | const char *name_b = | |
435 | LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, j); | |
436 | ||
437 | if (!strncmp(name_a, name_b, LTTNG_SYMBOL_NAME_LEN)) { | |
438 | /* Match! */ | |
439 | ret = -1; | |
440 | goto end; | |
441 | } | |
442 | } | |
443 | } | |
444 | ||
445 | end: | |
446 | return ret; | |
447 | } | |
448 | ||
97ee3a89 DG |
449 | /* |
450 | * Allocate and initialize a ust event. Set name and event type. | |
49d21f93 | 451 | * We own filter_expression, filter, and exclusion. |
97ee3a89 DG |
452 | * |
453 | * Return pointer to structure or NULL. | |
454 | */ | |
025faf73 | 455 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev, |
6b453b5e | 456 | char *filter_expression, |
561c6897 | 457 | struct lttng_filter_bytecode *filter, |
88f06f15 JG |
458 | struct lttng_event_exclusion *exclusion, |
459 | bool internal_event) | |
97ee3a89 DG |
460 | { |
461 | struct ltt_ust_event *lue; | |
97ee3a89 | 462 | |
0525e9ae DG |
463 | assert(ev); |
464 | ||
ad11a1d3 PP |
465 | if (exclusion && validate_exclusion(exclusion)) { |
466 | goto error; | |
467 | } | |
468 | ||
37357452 | 469 | lue = zmalloc(sizeof(struct ltt_ust_event)); |
44d3bd01 | 470 | if (lue == NULL) { |
ba7f0ae5 | 471 | PERROR("ust event zmalloc"); |
97ee3a89 DG |
472 | goto error; |
473 | } | |
474 | ||
88f06f15 JG |
475 | lue->internal = internal_event; |
476 | ||
97ee3a89 DG |
477 | switch (ev->type) { |
478 | case LTTNG_EVENT_PROBE: | |
44d3bd01 | 479 | lue->attr.instrumentation = LTTNG_UST_PROBE; |
97ee3a89 DG |
480 | break; |
481 | case LTTNG_EVENT_FUNCTION: | |
44d3bd01 | 482 | lue->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
483 | break; |
484 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
44d3bd01 | 485 | lue->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
486 | break; |
487 | case LTTNG_EVENT_TRACEPOINT: | |
44d3bd01 | 488 | lue->attr.instrumentation = LTTNG_UST_TRACEPOINT; |
97ee3a89 DG |
489 | break; |
490 | default: | |
491 | ERR("Unknown ust instrumentation type (%d)", ev->type); | |
44844c29 | 492 | goto error_free_event; |
97ee3a89 DG |
493 | } |
494 | ||
495 | /* Copy event name */ | |
44d3bd01 DG |
496 | strncpy(lue->attr.name, ev->name, LTTNG_UST_SYM_NAME_LEN); |
497 | lue->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
97ee3a89 | 498 | |
0cda4f28 | 499 | switch (ev->loglevel_type) { |
8005f29a MD |
500 | case LTTNG_EVENT_LOGLEVEL_ALL: |
501 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_ALL; | |
22e25b71 | 502 | lue->attr.loglevel = -1; /* Force to -1 */ |
0cda4f28 | 503 | break; |
8005f29a MD |
504 | case LTTNG_EVENT_LOGLEVEL_RANGE: |
505 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_RANGE; | |
22e25b71 | 506 | lue->attr.loglevel = ev->loglevel; |
8005f29a MD |
507 | break; |
508 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
509 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_SINGLE; | |
22e25b71 | 510 | lue->attr.loglevel = ev->loglevel; |
0cda4f28 MD |
511 | break; |
512 | default: | |
4431494b | 513 | ERR("Unknown ust loglevel type (%d)", ev->loglevel_type); |
0cda4f28 MD |
514 | goto error_free_event; |
515 | } | |
516 | ||
025faf73 | 517 | /* Same layout. */ |
6b453b5e | 518 | lue->filter_expression = filter_expression; |
51755dc8 JG |
519 | lue->filter = filter; |
520 | lue->exclusion = exclusion; | |
0cda4f28 | 521 | |
f6a9efaa | 522 | /* Init node */ |
bec39940 | 523 | lttng_ht_node_init_str(&lue->node, lue->attr.name); |
97ee3a89 | 524 | |
300b8fd5 MD |
525 | DBG2("Trace UST event %s, loglevel (%d,%d) created", |
526 | lue->attr.name, lue->attr.loglevel_type, | |
527 | lue->attr.loglevel); | |
284d8f55 | 528 | |
97ee3a89 DG |
529 | return lue; |
530 | ||
44844c29 MD |
531 | error_free_event: |
532 | free(lue); | |
97ee3a89 | 533 | error: |
49d21f93 MD |
534 | free(filter_expression); |
535 | free(filter); | |
536 | free(exclusion); | |
97ee3a89 DG |
537 | return NULL; |
538 | } | |
539 | ||
aa3514e9 | 540 | static |
bdf64013 JG |
541 | int trace_ust_context_type_event_to_ust( |
542 | enum lttng_event_context_type type) | |
55cc08a6 | 543 | { |
aa3514e9 | 544 | int utype; |
0525e9ae | 545 | |
aa3514e9 | 546 | switch (type) { |
9197c5c4 MD |
547 | case LTTNG_EVENT_CONTEXT_VTID: |
548 | utype = LTTNG_UST_CONTEXT_VTID; | |
549 | break; | |
550 | case LTTNG_EVENT_CONTEXT_VPID: | |
551 | utype = LTTNG_UST_CONTEXT_VPID; | |
552 | break; | |
553 | case LTTNG_EVENT_CONTEXT_PTHREAD_ID: | |
554 | utype = LTTNG_UST_CONTEXT_PTHREAD_ID; | |
555 | break; | |
556 | case LTTNG_EVENT_CONTEXT_PROCNAME: | |
557 | utype = LTTNG_UST_CONTEXT_PROCNAME; | |
558 | break; | |
7c612c2e WP |
559 | case LTTNG_EVENT_CONTEXT_IP: |
560 | utype = LTTNG_UST_CONTEXT_IP; | |
561 | break; | |
aa3514e9 | 562 | case LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER: |
354e561b MD |
563 | if (!ustctl_has_perf_counters()) { |
564 | utype = -1; | |
565 | WARN("Perf counters not implemented in UST"); | |
566 | } else { | |
567 | utype = LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER; | |
568 | } | |
aa3514e9 | 569 | break; |
bdf64013 JG |
570 | case LTTNG_EVENT_CONTEXT_APP_CONTEXT: |
571 | utype = LTTNG_UST_CONTEXT_APP_CONTEXT; | |
572 | break; | |
9197c5c4 | 573 | default: |
aa3514e9 MD |
574 | utype = -1; |
575 | break; | |
576 | } | |
577 | return utype; | |
578 | } | |
579 | ||
580 | /* | |
581 | * Return 1 if contexts match, 0 otherwise. | |
582 | */ | |
583 | int trace_ust_match_context(struct ltt_ust_context *uctx, | |
584 | struct lttng_event_context *ctx) | |
585 | { | |
586 | int utype; | |
587 | ||
588 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
589 | if (utype < 0) { | |
590 | return 0; | |
591 | } | |
592 | if (uctx->ctx.ctx != utype) { | |
593 | return 0; | |
594 | } | |
595 | switch (utype) { | |
596 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
597 | if (uctx->ctx.u.perf_counter.type | |
598 | != ctx->u.perf_counter.type) { | |
599 | return 0; | |
600 | } | |
601 | if (uctx->ctx.u.perf_counter.config | |
602 | != ctx->u.perf_counter.config) { | |
603 | return 0; | |
604 | } | |
605 | if (strncmp(uctx->ctx.u.perf_counter.name, | |
606 | ctx->u.perf_counter.name, | |
607 | LTTNG_UST_SYM_NAME_LEN)) { | |
608 | return 0; | |
609 | } | |
610 | break; | |
54fb33cf JG |
611 | case LTTNG_UST_CONTEXT_APP_CONTEXT: |
612 | assert(uctx->ctx.u.app_ctx.provider_name); | |
613 | assert(uctx->ctx.u.app_ctx.ctx_name); | |
614 | if (strcmp(uctx->ctx.u.app_ctx.provider_name, | |
615 | ctx->u.app_ctx.provider_name) || | |
616 | strcmp(uctx->ctx.u.app_ctx.ctx_name, | |
617 | ctx->u.app_ctx.ctx_name)) { | |
618 | return 0; | |
619 | } | |
aa3514e9 MD |
620 | default: |
621 | break; | |
622 | ||
623 | } | |
624 | return 1; | |
625 | } | |
626 | ||
627 | /* | |
628 | * Allocate and initialize an UST context. | |
629 | * | |
630 | * Return pointer to structure or NULL. | |
631 | */ | |
632 | struct ltt_ust_context *trace_ust_create_context( | |
633 | struct lttng_event_context *ctx) | |
634 | { | |
bdf64013 | 635 | struct ltt_ust_context *uctx = NULL; |
aa3514e9 MD |
636 | int utype; |
637 | ||
638 | assert(ctx); | |
639 | ||
640 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
641 | if (utype < 0) { | |
1cf992b8 | 642 | ERR("Invalid UST context"); |
bdf64013 | 643 | goto end; |
9197c5c4 | 644 | } |
55cc08a6 DG |
645 | |
646 | uctx = zmalloc(sizeof(struct ltt_ust_context)); | |
bdf64013 | 647 | if (!uctx) { |
55cc08a6 | 648 | PERROR("zmalloc ltt_ust_context"); |
bdf64013 | 649 | goto end; |
55cc08a6 DG |
650 | } |
651 | ||
aa3514e9 MD |
652 | uctx->ctx.ctx = (enum lttng_ust_context_type) utype; |
653 | switch (utype) { | |
654 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
655 | uctx->ctx.u.perf_counter.type = ctx->u.perf_counter.type; | |
656 | uctx->ctx.u.perf_counter.config = ctx->u.perf_counter.config; | |
657 | strncpy(uctx->ctx.u.perf_counter.name, ctx->u.perf_counter.name, | |
658 | LTTNG_UST_SYM_NAME_LEN); | |
659 | uctx->ctx.u.perf_counter.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
660 | break; | |
bdf64013 JG |
661 | case LTTNG_UST_CONTEXT_APP_CONTEXT: |
662 | { | |
663 | char *provider_name = NULL, *ctx_name = NULL; | |
664 | ||
665 | provider_name = strdup(ctx->u.app_ctx.provider_name); | |
666 | if (!provider_name) { | |
667 | goto error; | |
668 | } | |
669 | uctx->ctx.u.app_ctx.provider_name = provider_name; | |
670 | ||
671 | ctx_name = strdup(ctx->u.app_ctx.ctx_name); | |
672 | if (!ctx_name) { | |
673 | goto error; | |
674 | } | |
675 | uctx->ctx.u.app_ctx.ctx_name = ctx_name; | |
676 | break; | |
677 | } | |
aa3514e9 MD |
678 | default: |
679 | break; | |
680 | } | |
bec39940 | 681 | lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx); |
bdf64013 | 682 | end: |
55cc08a6 | 683 | return uctx; |
55cc08a6 | 684 | error: |
bdf64013 | 685 | trace_ust_destroy_context(uctx); |
55cc08a6 DG |
686 | return NULL; |
687 | } | |
688 | ||
a9ad0c8f | 689 | static |
a24248b3 | 690 | void destroy_id_tracker_node_rcu(struct rcu_head *head) |
a9ad0c8f | 691 | { |
a24248b3 MD |
692 | struct ust_id_tracker_node *tracker_node = |
693 | caa_container_of(head, struct ust_id_tracker_node, node.head); | |
a9ad0c8f MD |
694 | free(tracker_node); |
695 | } | |
696 | ||
697 | static | |
a24248b3 | 698 | void destroy_id_tracker_node(struct ust_id_tracker_node *tracker_node) |
a9ad0c8f MD |
699 | { |
700 | ||
a24248b3 | 701 | call_rcu(&tracker_node->node.head, destroy_id_tracker_node_rcu); |
a9ad0c8f MD |
702 | } |
703 | ||
704 | static | |
a24248b3 | 705 | int init_id_tracker(struct ust_id_tracker *id_tracker) |
a9ad0c8f | 706 | { |
a24248b3 | 707 | int ret = LTTNG_OK; |
a9ad0c8f | 708 | |
a24248b3 MD |
709 | id_tracker->ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); |
710 | if (!id_tracker->ht) { | |
711 | ret = LTTNG_ERR_NOMEM; | |
a9ad0c8f MD |
712 | goto end; |
713 | } | |
714 | ||
715 | end: | |
716 | return ret; | |
717 | } | |
718 | ||
719 | /* | |
a24248b3 | 720 | * Teardown id tracker content, but don't free id_tracker object. |
a9ad0c8f MD |
721 | */ |
722 | static | |
a24248b3 | 723 | void fini_id_tracker(struct ust_id_tracker *id_tracker) |
a9ad0c8f | 724 | { |
a24248b3 | 725 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
726 | struct lttng_ht_iter iter; |
727 | ||
a24248b3 | 728 | if (!id_tracker->ht) { |
a9ad0c8f MD |
729 | return; |
730 | } | |
731 | rcu_read_lock(); | |
a24248b3 | 732 | cds_lfht_for_each_entry(id_tracker->ht->ht, |
a9ad0c8f | 733 | &iter.iter, tracker_node, node.node) { |
a24248b3 | 734 | int ret = lttng_ht_del(id_tracker->ht, &iter); |
a9ad0c8f MD |
735 | |
736 | assert(!ret); | |
a24248b3 | 737 | destroy_id_tracker_node(tracker_node); |
a9ad0c8f MD |
738 | } |
739 | rcu_read_unlock(); | |
a24248b3 MD |
740 | ht_cleanup_push(id_tracker->ht); |
741 | id_tracker->ht = NULL; | |
a9ad0c8f MD |
742 | } |
743 | ||
744 | static | |
a24248b3 MD |
745 | struct ust_id_tracker_node *id_tracker_lookup( |
746 | struct ust_id_tracker *id_tracker, int id, | |
a9ad0c8f MD |
747 | struct lttng_ht_iter *iter) |
748 | { | |
a24248b3 | 749 | unsigned long _id = (unsigned long) id; |
a9ad0c8f MD |
750 | struct lttng_ht_node_ulong *node; |
751 | ||
a24248b3 | 752 | lttng_ht_lookup(id_tracker->ht, (void *) _id, iter); |
a9ad0c8f MD |
753 | node = lttng_ht_iter_get_node_ulong(iter); |
754 | if (node) { | |
a24248b3 | 755 | return caa_container_of(node, struct ust_id_tracker_node, |
a9ad0c8f MD |
756 | node); |
757 | } else { | |
758 | return NULL; | |
759 | } | |
760 | } | |
761 | ||
762 | static | |
a24248b3 | 763 | int id_tracker_add_id(struct ust_id_tracker *id_tracker, int id) |
a9ad0c8f MD |
764 | { |
765 | int retval = LTTNG_OK; | |
a24248b3 | 766 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
767 | struct lttng_ht_iter iter; |
768 | ||
a24248b3 | 769 | if (id < 0) { |
a9ad0c8f MD |
770 | retval = LTTNG_ERR_INVALID; |
771 | goto end; | |
772 | } | |
a24248b3 | 773 | tracker_node = id_tracker_lookup(id_tracker, id, &iter); |
a9ad0c8f MD |
774 | if (tracker_node) { |
775 | /* Already exists. */ | |
a24248b3 | 776 | retval = LTTNG_ERR_ID_TRACKED; |
a9ad0c8f MD |
777 | goto end; |
778 | } | |
779 | tracker_node = zmalloc(sizeof(*tracker_node)); | |
780 | if (!tracker_node) { | |
781 | retval = LTTNG_ERR_NOMEM; | |
782 | goto end; | |
783 | } | |
a24248b3 MD |
784 | lttng_ht_node_init_ulong(&tracker_node->node, (unsigned long) id); |
785 | lttng_ht_add_unique_ulong(id_tracker->ht, &tracker_node->node); | |
a9ad0c8f MD |
786 | end: |
787 | return retval; | |
788 | } | |
789 | ||
790 | static | |
a24248b3 | 791 | int id_tracker_del_id(struct ust_id_tracker *id_tracker, int id) |
a9ad0c8f MD |
792 | { |
793 | int retval = LTTNG_OK, ret; | |
a24248b3 | 794 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
795 | struct lttng_ht_iter iter; |
796 | ||
a24248b3 | 797 | if (id < 0) { |
a9ad0c8f MD |
798 | retval = LTTNG_ERR_INVALID; |
799 | goto end; | |
800 | } | |
a24248b3 | 801 | tracker_node = id_tracker_lookup(id_tracker, id, &iter); |
a9ad0c8f MD |
802 | if (!tracker_node) { |
803 | /* Not found */ | |
a24248b3 | 804 | retval = LTTNG_ERR_ID_NOT_TRACKED; |
a9ad0c8f MD |
805 | goto end; |
806 | } | |
a24248b3 | 807 | ret = lttng_ht_del(id_tracker->ht, &iter); |
a9ad0c8f MD |
808 | assert(!ret); |
809 | ||
a24248b3 | 810 | destroy_id_tracker_node(tracker_node); |
a9ad0c8f MD |
811 | end: |
812 | return retval; | |
813 | } | |
814 | ||
a24248b3 MD |
815 | static |
816 | struct ust_id_tracker *get_id_tracker(struct ltt_ust_session *session, | |
817 | enum lttng_tracker_type tracker_type) | |
818 | { | |
819 | switch (tracker_type) { | |
820 | case LTTNG_TRACKER_VPID: | |
821 | return &session->vpid_tracker; | |
822 | case LTTNG_TRACKER_VUID: | |
823 | return &session->vuid_tracker; | |
824 | case LTTNG_TRACKER_VGID: | |
825 | return &session->vgid_tracker; | |
826 | default: | |
827 | return NULL; | |
828 | } | |
829 | } | |
830 | ||
831 | static | |
832 | struct lttng_tracker_list *get_id_tracker_list(struct ltt_ust_session *session, | |
833 | enum lttng_tracker_type tracker_type) | |
834 | { | |
835 | switch (tracker_type) { | |
836 | case LTTNG_TRACKER_VPID: | |
837 | return session->tracker_list_vpid; | |
838 | case LTTNG_TRACKER_VUID: | |
839 | return session->tracker_list_vuid; | |
840 | case LTTNG_TRACKER_VGID: | |
841 | return session->tracker_list_vgid; | |
842 | default: | |
843 | return NULL; | |
844 | } | |
845 | } | |
846 | ||
a9ad0c8f MD |
847 | /* |
848 | * The session lock is held when calling this function. | |
849 | */ | |
a24248b3 MD |
850 | int trace_ust_id_tracker_lookup(enum lttng_tracker_type tracker_type, |
851 | struct ltt_ust_session *session, int id) | |
a9ad0c8f MD |
852 | { |
853 | struct lttng_ht_iter iter; | |
a24248b3 | 854 | struct ust_id_tracker *id_tracker; |
a9ad0c8f | 855 | |
a24248b3 MD |
856 | id_tracker = get_id_tracker(session, tracker_type); |
857 | if (!id_tracker) { | |
858 | abort(); | |
859 | } | |
860 | if (!id_tracker->ht) { | |
a9ad0c8f MD |
861 | return 1; |
862 | } | |
a24248b3 | 863 | if (id_tracker_lookup(id_tracker, id, &iter)) { |
a9ad0c8f MD |
864 | return 1; |
865 | } | |
866 | return 0; | |
867 | } | |
868 | ||
869 | /* | |
870 | * Called with the session lock held. | |
871 | */ | |
a24248b3 MD |
872 | int trace_ust_track_id(enum lttng_tracker_type tracker_type, |
873 | struct ltt_ust_session *session, | |
874 | struct lttng_tracker_id *id) | |
a9ad0c8f MD |
875 | { |
876 | int retval = LTTNG_OK; | |
a24248b3 MD |
877 | struct ust_id_tracker *id_tracker; |
878 | struct lttng_tracker_list *tracker_list; | |
879 | int value; | |
880 | ||
881 | if (tracker_type == LTTNG_TRACKER_PID) { | |
882 | DBG("Backward compatible behavior: translate PID tracker to VPID tracker for UST domain."); | |
883 | tracker_type = LTTNG_TRACKER_VPID; | |
884 | } | |
885 | ||
886 | retval = lttng_tracker_id_lookup_string(tracker_type, | |
887 | id, &value); | |
888 | if (retval != LTTNG_OK) { | |
889 | return retval; | |
890 | } | |
891 | ||
892 | /* Add to list. */ | |
893 | tracker_list = get_id_tracker_list(session, tracker_type); | |
894 | if (!tracker_list) { | |
895 | return LTTNG_ERR_INVALID; | |
896 | } | |
897 | retval = lttng_tracker_list_add(tracker_list, id); | |
898 | if (retval != LTTNG_OK) { | |
899 | return retval; | |
900 | } | |
a9ad0c8f | 901 | |
a24248b3 MD |
902 | id_tracker = get_id_tracker(session, tracker_type); |
903 | if (!id_tracker) { | |
904 | abort(); | |
905 | } | |
906 | if (value == -1) { | |
907 | /* Track all ids: destroy tracker if exists. */ | |
908 | if (id_tracker->ht) { | |
909 | fini_id_tracker(id_tracker); | |
a9ad0c8f MD |
910 | /* Ensure all apps have session. */ |
911 | ust_app_global_update_all(session); | |
912 | } | |
913 | } else { | |
a24248b3 | 914 | if (!id_tracker->ht) { |
a9ad0c8f | 915 | /* Create tracker. */ |
a24248b3 MD |
916 | retval = init_id_tracker(id_tracker); |
917 | if (retval != LTTNG_OK) { | |
918 | ERR("Error initializing ID tracker"); | |
a9ad0c8f MD |
919 | goto end; |
920 | } | |
a24248b3 MD |
921 | retval = id_tracker_add_id(id_tracker, value); |
922 | if (retval != LTTNG_OK) { | |
923 | fini_id_tracker(id_tracker); | |
a9ad0c8f MD |
924 | goto end; |
925 | } | |
a24248b3 | 926 | /* Keep only apps matching ID. */ |
a9ad0c8f MD |
927 | ust_app_global_update_all(session); |
928 | } else { | |
929 | struct ust_app *app; | |
930 | ||
a24248b3 MD |
931 | retval = id_tracker_add_id(id_tracker, value); |
932 | if (retval != LTTNG_OK) { | |
a9ad0c8f MD |
933 | goto end; |
934 | } | |
935 | /* Add session to application */ | |
a24248b3 MD |
936 | switch (tracker_type) { |
937 | case LTTNG_TRACKER_VPID: | |
938 | app = ust_app_find_by_pid(value); | |
939 | if (app) { | |
940 | ust_app_global_update(session, app); | |
941 | } | |
942 | break; | |
943 | default: | |
944 | /* Keep only apps matching ID. */ | |
945 | ust_app_global_update_all(session); | |
a9ad0c8f MD |
946 | } |
947 | } | |
948 | } | |
949 | end: | |
950 | return retval; | |
951 | } | |
952 | ||
953 | /* | |
954 | * Called with the session lock held. | |
955 | */ | |
a24248b3 MD |
956 | int trace_ust_untrack_id(enum lttng_tracker_type tracker_type, |
957 | struct ltt_ust_session *session, struct lttng_tracker_id *id) | |
a9ad0c8f MD |
958 | { |
959 | int retval = LTTNG_OK; | |
a24248b3 MD |
960 | struct ust_id_tracker *id_tracker; |
961 | struct lttng_tracker_list *tracker_list; | |
962 | int value; | |
963 | ||
964 | if (tracker_type == LTTNG_TRACKER_PID) { | |
965 | DBG("Backward compatible behavior: translate PID tracker to VPID tracker for UST domain."); | |
966 | tracker_type = LTTNG_TRACKER_VPID; | |
967 | } | |
a9ad0c8f | 968 | |
a24248b3 MD |
969 | retval = lttng_tracker_id_lookup_string(tracker_type, |
970 | id, &value); | |
971 | if (retval != LTTNG_OK) { | |
972 | return retval; | |
973 | } | |
974 | ||
975 | /* Remove from list. */ | |
976 | tracker_list = get_id_tracker_list(session, tracker_type); | |
977 | if (!tracker_list) { | |
978 | return LTTNG_ERR_INVALID; | |
979 | } | |
980 | retval = lttng_tracker_list_remove(tracker_list, id); | |
981 | if (retval != LTTNG_OK) { | |
982 | return retval; | |
983 | } | |
984 | ||
985 | id_tracker = get_id_tracker(session, tracker_type); | |
986 | if (!id_tracker) { | |
987 | abort(); | |
988 | } | |
989 | ||
990 | if (value == -1) { | |
a9ad0c8f | 991 | /* Create empty tracker, replace old tracker. */ |
a24248b3 | 992 | struct ust_id_tracker tmp_tracker; |
a9ad0c8f | 993 | |
a24248b3 MD |
994 | tmp_tracker = *id_tracker; |
995 | retval = init_id_tracker(id_tracker); | |
996 | if (retval != LTTNG_OK) { | |
997 | ERR("Error initializing ID tracker"); | |
a9ad0c8f | 998 | /* Rollback operation. */ |
a24248b3 | 999 | *id_tracker = tmp_tracker; |
a9ad0c8f MD |
1000 | goto end; |
1001 | } | |
a24248b3 | 1002 | fini_id_tracker(&tmp_tracker); |
a9ad0c8f | 1003 | |
a24248b3 | 1004 | /* Keep only apps matching ID. */ |
a9ad0c8f MD |
1005 | ust_app_global_update_all(session); |
1006 | } else { | |
a9ad0c8f MD |
1007 | struct ust_app *app; |
1008 | ||
a24248b3 MD |
1009 | if (!id_tracker->ht) { |
1010 | /* No ID being tracked. */ | |
1011 | retval = LTTNG_ERR_ID_NOT_TRACKED; | |
a9ad0c8f MD |
1012 | goto end; |
1013 | } | |
a24248b3 MD |
1014 | /* Remove ID from tracker */ |
1015 | retval = id_tracker_del_id(id_tracker, value); | |
1016 | if (retval != LTTNG_OK) { | |
a9ad0c8f MD |
1017 | goto end; |
1018 | } | |
a24248b3 MD |
1019 | switch (tracker_type) { |
1020 | case LTTNG_TRACKER_VPID: | |
1021 | /* Remove session from application. */ | |
1022 | app = ust_app_find_by_pid(value); | |
1023 | if (app) { | |
1024 | ust_app_global_update(session, app); | |
1025 | } | |
1026 | break; | |
1027 | default: | |
1028 | /* Keep only apps matching ID. */ | |
1029 | ust_app_global_update_all(session); | |
a9ad0c8f MD |
1030 | } |
1031 | } | |
1032 | end: | |
1033 | return retval; | |
1034 | } | |
1035 | ||
a5dfbb9d MD |
1036 | /* |
1037 | * Called with session lock held. | |
1038 | */ | |
a24248b3 MD |
1039 | ssize_t trace_ust_list_tracker_ids(enum lttng_tracker_type tracker_type, |
1040 | struct ltt_ust_session *session, | |
1041 | struct lttng_tracker_id **_ids) | |
a5dfbb9d | 1042 | { |
a24248b3 | 1043 | struct lttng_tracker_list *tracker_list; |
a5dfbb9d | 1044 | |
a24248b3 MD |
1045 | if (tracker_type == LTTNG_TRACKER_PID) { |
1046 | DBG("Backward compatible behavior: translate PID tracker to VPID tracker for UST domain."); | |
1047 | tracker_type = LTTNG_TRACKER_VPID; | |
a5dfbb9d MD |
1048 | } |
1049 | ||
a24248b3 MD |
1050 | tracker_list = get_id_tracker_list(session, tracker_type); |
1051 | if (!tracker_list) { | |
1052 | return -LTTNG_ERR_INVALID; | |
a5dfbb9d | 1053 | } |
a24248b3 | 1054 | return lttng_tracker_id_get_list(tracker_list, _ids); |
a5dfbb9d MD |
1055 | } |
1056 | ||
f6a9efaa DG |
1057 | /* |
1058 | * RCU safe free context structure. | |
1059 | */ | |
1060 | static void destroy_context_rcu(struct rcu_head *head) | |
1061 | { | |
bec39940 DG |
1062 | struct lttng_ht_node_ulong *node = |
1063 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
f6a9efaa DG |
1064 | struct ltt_ust_context *ctx = |
1065 | caa_container_of(node, struct ltt_ust_context, node); | |
1066 | ||
bdf64013 | 1067 | trace_ust_destroy_context(ctx); |
f6a9efaa DG |
1068 | } |
1069 | ||
1070 | /* | |
1071 | * Cleanup UST context hash table. | |
1072 | */ | |
7bd39047 | 1073 | static void destroy_contexts(struct lttng_ht *ht) |
f6a9efaa DG |
1074 | { |
1075 | int ret; | |
bec39940 DG |
1076 | struct lttng_ht_node_ulong *node; |
1077 | struct lttng_ht_iter iter; | |
31746f93 | 1078 | struct ltt_ust_context *ctx; |
f6a9efaa | 1079 | |
0525e9ae DG |
1080 | assert(ht); |
1081 | ||
36b588ed | 1082 | rcu_read_lock(); |
bec39940 | 1083 | cds_lfht_for_each_entry(ht->ht, &iter.iter, node, node) { |
31746f93 DG |
1084 | /* Remove from ordered list. */ |
1085 | ctx = caa_container_of(node, struct ltt_ust_context, node); | |
1086 | cds_list_del(&ctx->list); | |
1087 | /* Remove from channel's hash table. */ | |
bec39940 | 1088 | ret = lttng_ht_del(ht, &iter); |
f6a9efaa DG |
1089 | if (!ret) { |
1090 | call_rcu(&node->head, destroy_context_rcu); | |
1091 | } | |
f6a9efaa | 1092 | } |
36b588ed | 1093 | rcu_read_unlock(); |
ed52805d | 1094 | |
0b2dc8df | 1095 | ht_cleanup_push(ht); |
f6a9efaa DG |
1096 | } |
1097 | ||
97ee3a89 DG |
1098 | /* |
1099 | * Cleanup ust event structure. | |
1100 | */ | |
1101 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
1102 | { | |
0525e9ae DG |
1103 | assert(event); |
1104 | ||
f6a9efaa | 1105 | DBG2("Trace destroy UST event %s", event->attr.name); |
6b453b5e | 1106 | free(event->filter_expression); |
53a80697 | 1107 | free(event->filter); |
40024f8a | 1108 | free(event->exclusion); |
97ee3a89 DG |
1109 | free(event); |
1110 | } | |
1111 | ||
bdf64013 JG |
1112 | /* |
1113 | * Cleanup ust context structure. | |
1114 | */ | |
1115 | void trace_ust_destroy_context(struct ltt_ust_context *ctx) | |
1116 | { | |
1117 | assert(ctx); | |
1118 | ||
1119 | if (ctx->ctx.ctx == LTTNG_UST_CONTEXT_APP_CONTEXT) { | |
1120 | free(ctx->ctx.u.app_ctx.provider_name); | |
1121 | free(ctx->ctx.u.app_ctx.ctx_name); | |
1122 | } | |
1123 | free(ctx); | |
1124 | } | |
1125 | ||
f6a9efaa DG |
1126 | /* |
1127 | * URCU intermediate call to complete destroy event. | |
1128 | */ | |
1129 | static void destroy_event_rcu(struct rcu_head *head) | |
1130 | { | |
bec39940 DG |
1131 | struct lttng_ht_node_str *node = |
1132 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
1133 | struct ltt_ust_event *event = |
1134 | caa_container_of(node, struct ltt_ust_event, node); | |
1135 | ||
1136 | trace_ust_destroy_event(event); | |
1137 | } | |
1138 | ||
284d8f55 DG |
1139 | /* |
1140 | * Cleanup UST events hashtable. | |
1141 | */ | |
7bd39047 | 1142 | static void destroy_events(struct lttng_ht *events) |
ed52805d DG |
1143 | { |
1144 | int ret; | |
bec39940 DG |
1145 | struct lttng_ht_node_str *node; |
1146 | struct lttng_ht_iter iter; | |
ed52805d | 1147 | |
0525e9ae DG |
1148 | assert(events); |
1149 | ||
36b588ed | 1150 | rcu_read_lock(); |
bec39940 DG |
1151 | cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) { |
1152 | ret = lttng_ht_del(events, &iter); | |
7bd39047 DG |
1153 | assert(!ret); |
1154 | call_rcu(&node->head, destroy_event_rcu); | |
ed52805d | 1155 | } |
36b588ed | 1156 | rcu_read_unlock(); |
ed52805d | 1157 | |
0b2dc8df | 1158 | ht_cleanup_push(events); |
ed52805d DG |
1159 | } |
1160 | ||
97ee3a89 DG |
1161 | /* |
1162 | * Cleanup ust channel structure. | |
36b588ed MD |
1163 | * |
1164 | * Should _NOT_ be called with RCU read lock held. | |
97ee3a89 | 1165 | */ |
36b588ed | 1166 | static void _trace_ust_destroy_channel(struct ltt_ust_channel *channel) |
97ee3a89 | 1167 | { |
0525e9ae DG |
1168 | assert(channel); |
1169 | ||
f6a9efaa | 1170 | DBG2("Trace destroy UST channel %s", channel->name); |
97ee3a89 | 1171 | |
97ee3a89 | 1172 | free(channel); |
f6a9efaa DG |
1173 | } |
1174 | ||
1175 | /* | |
1176 | * URCU intermediate call to complete destroy channel. | |
1177 | */ | |
1178 | static void destroy_channel_rcu(struct rcu_head *head) | |
1179 | { | |
bec39940 DG |
1180 | struct lttng_ht_node_str *node = |
1181 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
1182 | struct ltt_ust_channel *channel = |
1183 | caa_container_of(node, struct ltt_ust_channel, node); | |
1184 | ||
36b588ed MD |
1185 | _trace_ust_destroy_channel(channel); |
1186 | } | |
1187 | ||
1188 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
1189 | { | |
627cbbe7 MD |
1190 | /* Destroying all events of the channel */ |
1191 | destroy_events(channel->events); | |
1192 | /* Destroying all context of the channel */ | |
1193 | destroy_contexts(channel->ctx); | |
1194 | ||
36b588ed | 1195 | call_rcu(&channel->node.head, destroy_channel_rcu); |
97ee3a89 DG |
1196 | } |
1197 | ||
d5979e4a DG |
1198 | /* |
1199 | * Remove an UST channel from a channel HT. | |
1200 | */ | |
1201 | void trace_ust_delete_channel(struct lttng_ht *ht, | |
1202 | struct ltt_ust_channel *channel) | |
1203 | { | |
1204 | int ret; | |
1205 | struct lttng_ht_iter iter; | |
1206 | ||
1207 | assert(ht); | |
1208 | assert(channel); | |
1209 | ||
1210 | iter.iter.node = &channel->node.node; | |
1211 | ret = lttng_ht_del(ht, &iter); | |
1212 | assert(!ret); | |
1213 | } | |
1214 | ||
97ee3a89 | 1215 | /* |
f6a9efaa | 1216 | * Iterate over a hash table containing channels and cleanup safely. |
97ee3a89 | 1217 | */ |
bec39940 | 1218 | static void destroy_channels(struct lttng_ht *channels) |
f6a9efaa | 1219 | { |
bec39940 DG |
1220 | struct lttng_ht_node_str *node; |
1221 | struct lttng_ht_iter iter; | |
f6a9efaa | 1222 | |
0525e9ae DG |
1223 | assert(channels); |
1224 | ||
24d1723f | 1225 | rcu_read_lock(); |
bec39940 | 1226 | cds_lfht_for_each_entry(channels->ht, &iter.iter, node, node) { |
627cbbe7 MD |
1227 | struct ltt_ust_channel *chan = |
1228 | caa_container_of(node, struct ltt_ust_channel, node); | |
1229 | ||
1230 | trace_ust_delete_channel(channels, chan); | |
1231 | trace_ust_destroy_channel(chan); | |
f6a9efaa | 1232 | } |
36b588ed | 1233 | rcu_read_unlock(); |
ed52805d | 1234 | |
0b2dc8df | 1235 | ht_cleanup_push(channels); |
f6a9efaa DG |
1236 | } |
1237 | ||
f6a9efaa DG |
1238 | /* |
1239 | * Cleanup UST global domain. | |
1240 | */ | |
1241 | static void destroy_domain_global(struct ltt_ust_domain_global *dom) | |
1242 | { | |
0525e9ae DG |
1243 | assert(dom); |
1244 | ||
f6a9efaa DG |
1245 | destroy_channels(dom->channels); |
1246 | } | |
97ee3a89 | 1247 | |
f6a9efaa DG |
1248 | /* |
1249 | * Cleanup ust session structure | |
36b588ed MD |
1250 | * |
1251 | * Should *NOT* be called with RCU read-side lock held. | |
f6a9efaa DG |
1252 | */ |
1253 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
1254 | { | |
fefd409b | 1255 | struct agent *agt; |
7972aab2 | 1256 | struct buffer_reg_uid *reg, *sreg; |
fefd409b | 1257 | struct lttng_ht_iter iter; |
7972aab2 | 1258 | |
0525e9ae | 1259 | assert(session); |
97ee3a89 | 1260 | |
d9bf3ca4 | 1261 | DBG2("Trace UST destroy session %" PRIu64, session->id); |
f6a9efaa | 1262 | |
f6a9efaa DG |
1263 | /* Cleaning up UST domain */ |
1264 | destroy_domain_global(&session->domain_global); | |
fefd409b | 1265 | |
0c0fcd77 | 1266 | rcu_read_lock(); |
fefd409b | 1267 | cds_lfht_for_each_entry(session->agents->ht, &iter.iter, agt, node.node) { |
d0edf546 JG |
1268 | int ret = lttng_ht_del(session->agents, &iter); |
1269 | ||
1270 | assert(!ret); | |
fefd409b DG |
1271 | agent_destroy(agt); |
1272 | } | |
0c0fcd77 | 1273 | rcu_read_unlock(); |
7972aab2 | 1274 | |
8ada2175 MD |
1275 | ht_cleanup_push(session->agents); |
1276 | ||
7972aab2 DG |
1277 | /* Cleanup UID buffer registry object(s). */ |
1278 | cds_list_for_each_entry_safe(reg, sreg, &session->buffer_reg_uid_list, | |
1279 | lnode) { | |
1280 | cds_list_del(®->lnode); | |
1281 | buffer_reg_uid_remove(reg); | |
1282 | buffer_reg_uid_destroy(reg, session->consumer); | |
1283 | } | |
44d3bd01 | 1284 | |
6addfa37 | 1285 | consumer_output_put(session->consumer); |
3f8e211f | 1286 | |
a24248b3 MD |
1287 | lttng_tracker_list_destroy(session->tracker_list_vpid); |
1288 | lttng_tracker_list_destroy(session->tracker_list_vuid); | |
1289 | lttng_tracker_list_destroy(session->tracker_list_vgid); | |
1290 | ||
1291 | fini_id_tracker(&session->vpid_tracker); | |
1292 | fini_id_tracker(&session->vuid_tracker); | |
1293 | fini_id_tracker(&session->vgid_tracker); | |
a9ad0c8f | 1294 | |
97ee3a89 DG |
1295 | free(session); |
1296 | } |