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" |
c92af2a5 | 34 | #include "tracker.h" |
97ee3a89 | 35 | |
025faf73 DG |
36 | /* |
37 | * Match function for the events hash table lookup. | |
38 | * | |
39 | * Matches by name only. Used by the disable command. | |
40 | */ | |
18eace3b DG |
41 | int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node, |
42 | const void *_key) | |
43 | { | |
44 | struct ltt_ust_event *event; | |
45 | const char *name; | |
46 | ||
47 | assert(node); | |
48 | assert(_key); | |
49 | ||
50 | event = caa_container_of(node, struct ltt_ust_event, node.node); | |
51 | name = _key; | |
52 | ||
53 | /* Event name */ | |
54 | if (strncmp(event->attr.name, name, sizeof(event->attr.name)) != 0) { | |
55 | goto no_match; | |
56 | } | |
57 | ||
025faf73 | 58 | /* Match */ |
18eace3b DG |
59 | return 1; |
60 | ||
61 | no_match: | |
62 | return 0; | |
63 | } | |
64 | ||
025faf73 DG |
65 | /* |
66 | * Match function for the hash table lookup. | |
67 | * | |
68 | * It matches an ust event based on three attributes which are the event name, | |
69 | * the filter bytecode and the loglevel. | |
70 | */ | |
18eace3b DG |
71 | int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key) |
72 | { | |
73 | struct ltt_ust_event *event; | |
74 | const struct ltt_ust_ht_key *key; | |
2106efa0 | 75 | int ev_loglevel_value; |
19a97244 | 76 | int ll_match; |
18eace3b DG |
77 | |
78 | assert(node); | |
79 | assert(_key); | |
80 | ||
81 | event = caa_container_of(node, struct ltt_ust_event, node.node); | |
82 | key = _key; | |
2106efa0 | 83 | ev_loglevel_value = event->attr.loglevel; |
18eace3b | 84 | |
f19e9f8b | 85 | /* Match the 4 elements of the key: name, filter, loglevel, exclusions. */ |
18eace3b DG |
86 | |
87 | /* Event name */ | |
88 | if (strncmp(event->attr.name, key->name, sizeof(event->attr.name)) != 0) { | |
18eace3b DG |
89 | goto no_match; |
90 | } | |
91 | ||
b953b8cd | 92 | /* Event loglevel value and type. */ |
19a97244 PP |
93 | ll_match = loglevels_match(event->attr.loglevel_type, |
94 | ev_loglevel_value, key->loglevel_type, | |
95 | key->loglevel_value, LTTNG_UST_LOGLEVEL_ALL); | |
96 | ||
97 | if (!ll_match) { | |
b953b8cd | 98 | goto no_match; |
18eace3b DG |
99 | } |
100 | ||
101 | /* Only one of the filters is NULL, fail. */ | |
102 | if ((key->filter && !event->filter) || (!key->filter && event->filter)) { | |
18eace3b DG |
103 | goto no_match; |
104 | } | |
105 | ||
025faf73 DG |
106 | if (key->filter && event->filter) { |
107 | /* Both filters exists, check length followed by the bytecode. */ | |
108 | if (event->filter->len != key->filter->len || | |
109 | memcmp(event->filter->data, key->filter->data, | |
110 | event->filter->len) != 0) { | |
111 | goto no_match; | |
112 | } | |
18eace3b DG |
113 | } |
114 | ||
f19e9f8b JI |
115 | /* If only one of the exclusions is NULL, fail. */ |
116 | if ((key->exclusion && !event->exclusion) || (!key->exclusion && event->exclusion)) { | |
117 | goto no_match; | |
118 | } | |
119 | ||
120 | if (key->exclusion && event->exclusion) { | |
a5b7e00c PP |
121 | size_t i; |
122 | ||
123 | /* Check exclusion counts first. */ | |
124 | if (event->exclusion->count != key->exclusion->count) { | |
f19e9f8b JI |
125 | goto no_match; |
126 | } | |
a5b7e00c PP |
127 | |
128 | /* Compare names individually. */ | |
129 | for (i = 0; i < event->exclusion->count; ++i) { | |
130 | size_t j; | |
131 | bool found = false; | |
132 | const char *name_ev = | |
133 | LTTNG_EVENT_EXCLUSION_NAME_AT( | |
134 | event->exclusion, i); | |
135 | ||
136 | /* | |
137 | * Compare this exclusion name to all the key's | |
138 | * exclusion names. | |
139 | */ | |
140 | for (j = 0; j < key->exclusion->count; ++j) { | |
141 | const char *name_key = | |
142 | LTTNG_EVENT_EXCLUSION_NAME_AT( | |
143 | key->exclusion, j); | |
144 | ||
145 | if (!strncmp(name_ev, name_key, | |
146 | LTTNG_SYMBOL_NAME_LEN)) { | |
147 | /* Names match! */ | |
148 | found = true; | |
149 | break; | |
150 | } | |
151 | } | |
152 | ||
153 | /* | |
154 | * If the current exclusion name was not found amongst | |
155 | * the key's exclusion names, then there's no match. | |
156 | */ | |
157 | if (!found) { | |
158 | goto no_match; | |
159 | } | |
160 | } | |
f19e9f8b | 161 | } |
025faf73 DG |
162 | /* Match. */ |
163 | return 1; | |
18eace3b DG |
164 | |
165 | no_match: | |
166 | return 0; | |
18eace3b DG |
167 | } |
168 | ||
0177d773 | 169 | /* |
2223c96f DG |
170 | * Find the channel in the hashtable and return channel pointer. RCU read side |
171 | * lock MUST be acquired before calling this. | |
0177d773 | 172 | */ |
bec39940 | 173 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, |
f6a9efaa | 174 | char *name) |
0177d773 | 175 | { |
bec39940 DG |
176 | struct lttng_ht_node_str *node; |
177 | struct lttng_ht_iter iter; | |
0177d773 | 178 | |
85076754 MD |
179 | /* |
180 | * If we receive an empty string for channel name, it means the | |
181 | * default channel name is requested. | |
182 | */ | |
183 | if (name[0] == '\0') | |
184 | name = DEFAULT_CHANNEL_NAME; | |
185 | ||
bec39940 DG |
186 | lttng_ht_lookup(ht, (void *)name, &iter); |
187 | node = lttng_ht_iter_get_node_str(&iter); | |
f6a9efaa | 188 | if (node == NULL) { |
44d3bd01 DG |
189 | goto error; |
190 | } | |
191 | ||
f6a9efaa | 192 | DBG2("Trace UST channel %s found by name", name); |
0177d773 | 193 | |
f6a9efaa | 194 | return caa_container_of(node, struct ltt_ust_channel, node); |
97ee3a89 DG |
195 | |
196 | error: | |
f6a9efaa | 197 | DBG2("Trace UST channel %s not found by name", name); |
97ee3a89 DG |
198 | return NULL; |
199 | } | |
200 | ||
201 | /* | |
2223c96f DG |
202 | * Find the event in the hashtable and return event pointer. RCU read side lock |
203 | * MUST be acquired before calling this. | |
97ee3a89 | 204 | */ |
18eace3b | 205 | struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht, |
2106efa0 | 206 | char *name, struct lttng_filter_bytecode *filter, |
b953b8cd PP |
207 | enum lttng_ust_loglevel_type loglevel_type, int loglevel_value, |
208 | struct lttng_event_exclusion *exclusion) | |
97ee3a89 | 209 | { |
bec39940 DG |
210 | struct lttng_ht_node_str *node; |
211 | struct lttng_ht_iter iter; | |
18eace3b | 212 | struct ltt_ust_ht_key key; |
97ee3a89 | 213 | |
18eace3b DG |
214 | assert(name); |
215 | assert(ht); | |
216 | ||
217 | key.name = name; | |
218 | key.filter = filter; | |
b953b8cd PP |
219 | key.loglevel_type = loglevel_type; |
220 | key.loglevel_value = loglevel_value; | |
10646003 | 221 | key.exclusion = exclusion; |
18eace3b | 222 | |
18eace3b DG |
223 | cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed), |
224 | trace_ust_ht_match_event, &key, &iter.iter); | |
bec39940 | 225 | node = lttng_ht_iter_get_node_str(&iter); |
f6a9efaa | 226 | if (node == NULL) { |
97ee3a89 DG |
227 | goto error; |
228 | } | |
229 | ||
18eace3b | 230 | DBG2("Trace UST event %s found", key.name); |
f6a9efaa DG |
231 | |
232 | return caa_container_of(node, struct ltt_ust_event, node); | |
97ee3a89 DG |
233 | |
234 | error: | |
18eace3b | 235 | DBG2("Trace UST event %s NOT found", key.name); |
97ee3a89 DG |
236 | return NULL; |
237 | } | |
238 | ||
fefd409b DG |
239 | /* |
240 | * Lookup an agent in the session agents hash table by domain type and return | |
241 | * the object if found else NULL. | |
4da703ad JG |
242 | * |
243 | * RCU read side lock must be acquired before calling and only released | |
244 | * once the agent is no longer in scope or being used. | |
fefd409b DG |
245 | */ |
246 | struct agent *trace_ust_find_agent(struct ltt_ust_session *session, | |
247 | enum lttng_domain_type domain_type) | |
248 | { | |
249 | struct agent *agt = NULL; | |
250 | struct lttng_ht_node_u64 *node; | |
251 | struct lttng_ht_iter iter; | |
252 | uint64_t key; | |
253 | ||
254 | assert(session); | |
255 | ||
256 | DBG3("Trace ust agent lookup for domain %d", domain_type); | |
257 | ||
258 | key = domain_type; | |
259 | ||
260 | lttng_ht_lookup(session->agents, &key, &iter); | |
261 | node = lttng_ht_iter_get_node_u64(&iter); | |
262 | if (!node) { | |
263 | goto end; | |
264 | } | |
265 | agt = caa_container_of(node, struct agent, node); | |
266 | ||
267 | end: | |
268 | return agt; | |
269 | } | |
270 | ||
97ee3a89 DG |
271 | /* |
272 | * Allocate and initialize a ust session data structure. | |
273 | * | |
274 | * Return pointer to structure or NULL. | |
275 | */ | |
d9bf3ca4 | 276 | struct ltt_ust_session *trace_ust_create_session(uint64_t session_id) |
97ee3a89 DG |
277 | { |
278 | struct ltt_ust_session *lus; | |
279 | ||
280 | /* Allocate a new ltt ust session */ | |
ba7f0ae5 | 281 | lus = zmalloc(sizeof(struct ltt_ust_session)); |
97ee3a89 | 282 | if (lus == NULL) { |
ba7f0ae5 | 283 | PERROR("create ust session zmalloc"); |
c92af2a5 | 284 | goto error_alloc; |
97ee3a89 DG |
285 | } |
286 | ||
287 | /* Init data structure */ | |
a991f516 | 288 | lus->id = session_id; |
14fb1ebe | 289 | lus->active = 0; |
97ee3a89 | 290 | |
84ad93e8 DG |
291 | /* Set default metadata channel attribute. */ |
292 | lus->metadata_attr.overwrite = DEFAULT_CHANNEL_OVERWRITE; | |
293 | lus->metadata_attr.subbuf_size = default_get_metadata_subbuf_size(); | |
294 | lus->metadata_attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM; | |
295 | lus->metadata_attr.switch_timer_interval = DEFAULT_METADATA_SWITCH_TIMER; | |
296 | lus->metadata_attr.read_timer_interval = DEFAULT_METADATA_READ_TIMER; | |
297 | lus->metadata_attr.output = LTTNG_UST_MMAP; | |
298 | ||
7972aab2 DG |
299 | /* |
300 | * Default buffer type. This can be changed through an enable channel | |
301 | * requesting a different type. Note that this can only be changed once | |
302 | * during the session lifetime which is at the first enable channel and | |
303 | * only before start. The flag buffer_type_changed indicates the status. | |
304 | */ | |
8692d4e5 | 305 | lus->buffer_type = LTTNG_BUFFER_PER_UID; |
7972aab2 DG |
306 | /* Once set to 1, the buffer_type is immutable for the session. */ |
307 | lus->buffer_type_changed = 0; | |
308 | /* Init it in case it get used after allocation. */ | |
309 | CDS_INIT_LIST_HEAD(&lus->buffer_reg_uid_list); | |
f6a9efaa DG |
310 | |
311 | /* Alloc UST global domain channels' HT */ | |
bec39940 | 312 | lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
fefd409b DG |
313 | /* Alloc agent hash table. */ |
314 | lus->agents = lttng_ht_new(0, LTTNG_HT_TYPE_U64); | |
44d3bd01 | 315 | |
c92af2a5 MD |
316 | lus->tracker_list_vpid = lttng_tracker_list_create(); |
317 | if (!lus->tracker_list_vpid) { | |
318 | goto error; | |
319 | } | |
320 | lus->tracker_list_vuid = lttng_tracker_list_create(); | |
321 | if (!lus->tracker_list_vuid) { | |
322 | goto error; | |
323 | } | |
324 | lus->tracker_list_vgid = lttng_tracker_list_create(); | |
325 | if (!lus->tracker_list_vgid) { | |
326 | goto error; | |
327 | } | |
00e2e675 DG |
328 | lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL); |
329 | if (lus->consumer == NULL) { | |
c92af2a5 | 330 | goto error; |
00e2e675 DG |
331 | } |
332 | ||
44d3bd01 DG |
333 | DBG2("UST trace session create successful"); |
334 | ||
97ee3a89 DG |
335 | return lus; |
336 | ||
c92af2a5 MD |
337 | error: |
338 | lttng_tracker_list_destroy(lus->tracker_list_vpid); | |
339 | lttng_tracker_list_destroy(lus->tracker_list_vuid); | |
340 | lttng_tracker_list_destroy(lus->tracker_list_vgid); | |
0b2dc8df | 341 | ht_cleanup_push(lus->domain_global.channels); |
fefd409b | 342 | ht_cleanup_push(lus->agents); |
44844c29 | 343 | free(lus); |
c92af2a5 | 344 | error_alloc: |
97ee3a89 DG |
345 | return NULL; |
346 | } | |
347 | ||
348 | /* | |
349 | * Allocate and initialize a ust channel data structure. | |
350 | * | |
351 | * Return pointer to structure or NULL. | |
352 | */ | |
51755dc8 JG |
353 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan, |
354 | enum lttng_domain_type domain) | |
97ee3a89 | 355 | { |
97ee3a89 DG |
356 | struct ltt_ust_channel *luc; |
357 | ||
0525e9ae | 358 | assert(chan); |
0525e9ae | 359 | |
37357452 | 360 | luc = zmalloc(sizeof(struct ltt_ust_channel)); |
97ee3a89 | 361 | if (luc == NULL) { |
df0f840b | 362 | PERROR("ltt_ust_channel zmalloc"); |
97ee3a89 DG |
363 | goto error; |
364 | } | |
365 | ||
51755dc8 JG |
366 | luc->domain = domain; |
367 | ||
44d3bd01 | 368 | /* Copy UST channel attributes */ |
48842b30 DG |
369 | luc->attr.overwrite = chan->attr.overwrite; |
370 | luc->attr.subbuf_size = chan->attr.subbuf_size; | |
371 | luc->attr.num_subbuf = chan->attr.num_subbuf; | |
372 | luc->attr.switch_timer_interval = chan->attr.switch_timer_interval; | |
373 | luc->attr.read_timer_interval = chan->attr.read_timer_interval; | |
6775595e | 374 | luc->attr.output = (enum lttng_ust_output) chan->attr.output; |
44d3bd01 DG |
375 | |
376 | /* Translate to UST output enum */ | |
377 | switch (luc->attr.output) { | |
378 | default: | |
379 | luc->attr.output = LTTNG_UST_MMAP; | |
380 | break; | |
97ee3a89 | 381 | } |
97ee3a89 | 382 | |
85076754 MD |
383 | /* |
384 | * If we receive an empty string for channel name, it means the | |
385 | * default channel name is requested. | |
386 | */ | |
387 | if (chan->name[0] == '\0') { | |
388 | strncpy(luc->name, DEFAULT_CHANNEL_NAME, sizeof(luc->name)); | |
389 | } else { | |
390 | /* Copy channel name */ | |
391 | strncpy(luc->name, chan->name, sizeof(luc->name)); | |
392 | } | |
97ee3a89 DG |
393 | luc->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; |
394 | ||
f6a9efaa | 395 | /* Init node */ |
bec39940 | 396 | lttng_ht_node_init_str(&luc->node, luc->name); |
31746f93 DG |
397 | CDS_INIT_LIST_HEAD(&luc->ctx_list); |
398 | ||
f6a9efaa | 399 | /* Alloc hash tables */ |
bec39940 DG |
400 | luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
401 | luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
f6a9efaa | 402 | |
1624d5b7 JD |
403 | /* On-disk circular buffer parameters */ |
404 | luc->tracefile_size = chan->attr.tracefile_size; | |
405 | luc->tracefile_count = chan->attr.tracefile_count; | |
406 | ||
f6a9efaa DG |
407 | DBG2("Trace UST channel %s created", luc->name); |
408 | ||
97ee3a89 | 409 | error: |
7972aab2 | 410 | return luc; |
97ee3a89 DG |
411 | } |
412 | ||
ad11a1d3 PP |
413 | /* |
414 | * Validates an exclusion list. | |
415 | * | |
416 | * Returns 0 if valid, negative value if invalid. | |
417 | */ | |
418 | static int validate_exclusion(struct lttng_event_exclusion *exclusion) | |
419 | { | |
420 | size_t i; | |
421 | int ret = 0; | |
422 | ||
423 | assert(exclusion); | |
424 | ||
425 | for (i = 0; i < exclusion->count; ++i) { | |
426 | size_t j; | |
427 | const char *name_a = | |
428 | LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, i); | |
429 | ||
430 | for (j = 0; j < i; ++j) { | |
431 | const char *name_b = | |
432 | LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, j); | |
433 | ||
434 | if (!strncmp(name_a, name_b, LTTNG_SYMBOL_NAME_LEN)) { | |
435 | /* Match! */ | |
436 | ret = -1; | |
437 | goto end; | |
438 | } | |
439 | } | |
440 | } | |
441 | ||
442 | end: | |
443 | return ret; | |
444 | } | |
445 | ||
97ee3a89 DG |
446 | /* |
447 | * Allocate and initialize a ust event. Set name and event type. | |
49d21f93 | 448 | * We own filter_expression, filter, and exclusion. |
97ee3a89 DG |
449 | * |
450 | * Return pointer to structure or NULL. | |
451 | */ | |
025faf73 | 452 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev, |
6b453b5e | 453 | char *filter_expression, |
561c6897 | 454 | struct lttng_filter_bytecode *filter, |
88f06f15 JG |
455 | struct lttng_event_exclusion *exclusion, |
456 | bool internal_event) | |
97ee3a89 DG |
457 | { |
458 | struct ltt_ust_event *lue; | |
97ee3a89 | 459 | |
0525e9ae DG |
460 | assert(ev); |
461 | ||
ad11a1d3 PP |
462 | if (exclusion && validate_exclusion(exclusion)) { |
463 | goto error; | |
464 | } | |
465 | ||
37357452 | 466 | lue = zmalloc(sizeof(struct ltt_ust_event)); |
44d3bd01 | 467 | if (lue == NULL) { |
ba7f0ae5 | 468 | PERROR("ust event zmalloc"); |
97ee3a89 DG |
469 | goto error; |
470 | } | |
471 | ||
88f06f15 JG |
472 | lue->internal = internal_event; |
473 | ||
97ee3a89 DG |
474 | switch (ev->type) { |
475 | case LTTNG_EVENT_PROBE: | |
44d3bd01 | 476 | lue->attr.instrumentation = LTTNG_UST_PROBE; |
97ee3a89 DG |
477 | break; |
478 | case LTTNG_EVENT_FUNCTION: | |
44d3bd01 | 479 | lue->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
480 | break; |
481 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
44d3bd01 | 482 | lue->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
483 | break; |
484 | case LTTNG_EVENT_TRACEPOINT: | |
44d3bd01 | 485 | lue->attr.instrumentation = LTTNG_UST_TRACEPOINT; |
97ee3a89 DG |
486 | break; |
487 | default: | |
488 | ERR("Unknown ust instrumentation type (%d)", ev->type); | |
44844c29 | 489 | goto error_free_event; |
97ee3a89 DG |
490 | } |
491 | ||
492 | /* Copy event name */ | |
44d3bd01 DG |
493 | strncpy(lue->attr.name, ev->name, LTTNG_UST_SYM_NAME_LEN); |
494 | lue->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
97ee3a89 | 495 | |
0cda4f28 | 496 | switch (ev->loglevel_type) { |
8005f29a MD |
497 | case LTTNG_EVENT_LOGLEVEL_ALL: |
498 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_ALL; | |
22e25b71 | 499 | lue->attr.loglevel = -1; /* Force to -1 */ |
0cda4f28 | 500 | break; |
8005f29a MD |
501 | case LTTNG_EVENT_LOGLEVEL_RANGE: |
502 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_RANGE; | |
22e25b71 | 503 | lue->attr.loglevel = ev->loglevel; |
8005f29a MD |
504 | break; |
505 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
506 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_SINGLE; | |
22e25b71 | 507 | lue->attr.loglevel = ev->loglevel; |
0cda4f28 MD |
508 | break; |
509 | default: | |
4431494b | 510 | ERR("Unknown ust loglevel type (%d)", ev->loglevel_type); |
0cda4f28 MD |
511 | goto error_free_event; |
512 | } | |
513 | ||
025faf73 | 514 | /* Same layout. */ |
6b453b5e | 515 | lue->filter_expression = filter_expression; |
51755dc8 JG |
516 | lue->filter = filter; |
517 | lue->exclusion = exclusion; | |
0cda4f28 | 518 | |
f6a9efaa | 519 | /* Init node */ |
bec39940 | 520 | lttng_ht_node_init_str(&lue->node, lue->attr.name); |
97ee3a89 | 521 | |
300b8fd5 MD |
522 | DBG2("Trace UST event %s, loglevel (%d,%d) created", |
523 | lue->attr.name, lue->attr.loglevel_type, | |
524 | lue->attr.loglevel); | |
284d8f55 | 525 | |
97ee3a89 DG |
526 | return lue; |
527 | ||
44844c29 MD |
528 | error_free_event: |
529 | free(lue); | |
97ee3a89 | 530 | error: |
49d21f93 MD |
531 | free(filter_expression); |
532 | free(filter); | |
533 | free(exclusion); | |
97ee3a89 DG |
534 | return NULL; |
535 | } | |
536 | ||
aa3514e9 | 537 | static |
bdf64013 JG |
538 | int trace_ust_context_type_event_to_ust( |
539 | enum lttng_event_context_type type) | |
55cc08a6 | 540 | { |
aa3514e9 | 541 | int utype; |
0525e9ae | 542 | |
aa3514e9 | 543 | switch (type) { |
9197c5c4 MD |
544 | case LTTNG_EVENT_CONTEXT_VTID: |
545 | utype = LTTNG_UST_CONTEXT_VTID; | |
546 | break; | |
547 | case LTTNG_EVENT_CONTEXT_VPID: | |
548 | utype = LTTNG_UST_CONTEXT_VPID; | |
549 | break; | |
550 | case LTTNG_EVENT_CONTEXT_PTHREAD_ID: | |
551 | utype = LTTNG_UST_CONTEXT_PTHREAD_ID; | |
552 | break; | |
553 | case LTTNG_EVENT_CONTEXT_PROCNAME: | |
554 | utype = LTTNG_UST_CONTEXT_PROCNAME; | |
555 | break; | |
7c612c2e WP |
556 | case LTTNG_EVENT_CONTEXT_IP: |
557 | utype = LTTNG_UST_CONTEXT_IP; | |
558 | break; | |
aa3514e9 | 559 | case LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER: |
354e561b MD |
560 | if (!ustctl_has_perf_counters()) { |
561 | utype = -1; | |
562 | WARN("Perf counters not implemented in UST"); | |
563 | } else { | |
564 | utype = LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER; | |
565 | } | |
aa3514e9 | 566 | break; |
bdf64013 JG |
567 | case LTTNG_EVENT_CONTEXT_APP_CONTEXT: |
568 | utype = LTTNG_UST_CONTEXT_APP_CONTEXT; | |
569 | break; | |
9197c5c4 | 570 | default: |
aa3514e9 MD |
571 | utype = -1; |
572 | break; | |
573 | } | |
574 | return utype; | |
575 | } | |
576 | ||
577 | /* | |
578 | * Return 1 if contexts match, 0 otherwise. | |
579 | */ | |
580 | int trace_ust_match_context(struct ltt_ust_context *uctx, | |
581 | struct lttng_event_context *ctx) | |
582 | { | |
583 | int utype; | |
584 | ||
585 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
586 | if (utype < 0) { | |
587 | return 0; | |
588 | } | |
589 | if (uctx->ctx.ctx != utype) { | |
590 | return 0; | |
591 | } | |
592 | switch (utype) { | |
593 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
594 | if (uctx->ctx.u.perf_counter.type | |
595 | != ctx->u.perf_counter.type) { | |
596 | return 0; | |
597 | } | |
598 | if (uctx->ctx.u.perf_counter.config | |
599 | != ctx->u.perf_counter.config) { | |
600 | return 0; | |
601 | } | |
602 | if (strncmp(uctx->ctx.u.perf_counter.name, | |
603 | ctx->u.perf_counter.name, | |
604 | LTTNG_UST_SYM_NAME_LEN)) { | |
605 | return 0; | |
606 | } | |
607 | break; | |
54fb33cf JG |
608 | case LTTNG_UST_CONTEXT_APP_CONTEXT: |
609 | assert(uctx->ctx.u.app_ctx.provider_name); | |
610 | assert(uctx->ctx.u.app_ctx.ctx_name); | |
611 | if (strcmp(uctx->ctx.u.app_ctx.provider_name, | |
612 | ctx->u.app_ctx.provider_name) || | |
613 | strcmp(uctx->ctx.u.app_ctx.ctx_name, | |
614 | ctx->u.app_ctx.ctx_name)) { | |
615 | return 0; | |
616 | } | |
aa3514e9 MD |
617 | default: |
618 | break; | |
619 | ||
620 | } | |
621 | return 1; | |
622 | } | |
623 | ||
624 | /* | |
625 | * Allocate and initialize an UST context. | |
626 | * | |
627 | * Return pointer to structure or NULL. | |
628 | */ | |
629 | struct ltt_ust_context *trace_ust_create_context( | |
630 | struct lttng_event_context *ctx) | |
631 | { | |
bdf64013 | 632 | struct ltt_ust_context *uctx = NULL; |
aa3514e9 MD |
633 | int utype; |
634 | ||
635 | assert(ctx); | |
636 | ||
637 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
638 | if (utype < 0) { | |
1cf992b8 | 639 | ERR("Invalid UST context"); |
bdf64013 | 640 | goto end; |
9197c5c4 | 641 | } |
55cc08a6 DG |
642 | |
643 | uctx = zmalloc(sizeof(struct ltt_ust_context)); | |
bdf64013 | 644 | if (!uctx) { |
55cc08a6 | 645 | PERROR("zmalloc ltt_ust_context"); |
bdf64013 | 646 | goto end; |
55cc08a6 DG |
647 | } |
648 | ||
aa3514e9 MD |
649 | uctx->ctx.ctx = (enum lttng_ust_context_type) utype; |
650 | switch (utype) { | |
651 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
652 | uctx->ctx.u.perf_counter.type = ctx->u.perf_counter.type; | |
653 | uctx->ctx.u.perf_counter.config = ctx->u.perf_counter.config; | |
654 | strncpy(uctx->ctx.u.perf_counter.name, ctx->u.perf_counter.name, | |
655 | LTTNG_UST_SYM_NAME_LEN); | |
656 | uctx->ctx.u.perf_counter.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
657 | break; | |
bdf64013 JG |
658 | case LTTNG_UST_CONTEXT_APP_CONTEXT: |
659 | { | |
660 | char *provider_name = NULL, *ctx_name = NULL; | |
661 | ||
662 | provider_name = strdup(ctx->u.app_ctx.provider_name); | |
663 | if (!provider_name) { | |
664 | goto error; | |
665 | } | |
666 | uctx->ctx.u.app_ctx.provider_name = provider_name; | |
667 | ||
668 | ctx_name = strdup(ctx->u.app_ctx.ctx_name); | |
669 | if (!ctx_name) { | |
670 | goto error; | |
671 | } | |
672 | uctx->ctx.u.app_ctx.ctx_name = ctx_name; | |
673 | break; | |
674 | } | |
aa3514e9 MD |
675 | default: |
676 | break; | |
677 | } | |
bec39940 | 678 | lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx); |
bdf64013 | 679 | end: |
55cc08a6 | 680 | return uctx; |
55cc08a6 | 681 | error: |
bdf64013 | 682 | trace_ust_destroy_context(uctx); |
55cc08a6 DG |
683 | return NULL; |
684 | } | |
685 | ||
a9ad0c8f | 686 | static |
c92af2a5 | 687 | void destroy_id_tracker_node_rcu(struct rcu_head *head) |
a9ad0c8f | 688 | { |
c92af2a5 MD |
689 | struct ust_id_tracker_node *tracker_node = |
690 | caa_container_of(head, struct ust_id_tracker_node, node.head); | |
a9ad0c8f MD |
691 | free(tracker_node); |
692 | } | |
693 | ||
694 | static | |
c92af2a5 | 695 | void destroy_id_tracker_node(struct ust_id_tracker_node *tracker_node) |
a9ad0c8f MD |
696 | { |
697 | ||
c92af2a5 | 698 | call_rcu(&tracker_node->node.head, destroy_id_tracker_node_rcu); |
a9ad0c8f MD |
699 | } |
700 | ||
701 | static | |
c92af2a5 | 702 | int init_id_tracker(struct ust_id_tracker *id_tracker) |
a9ad0c8f | 703 | { |
c92af2a5 | 704 | int ret = LTTNG_OK; |
a9ad0c8f | 705 | |
c92af2a5 MD |
706 | id_tracker->ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); |
707 | if (!id_tracker->ht) { | |
708 | ret = LTTNG_ERR_NOMEM; | |
a9ad0c8f MD |
709 | goto end; |
710 | } | |
711 | ||
712 | end: | |
713 | return ret; | |
714 | } | |
715 | ||
716 | /* | |
c92af2a5 | 717 | * Teardown id tracker content, but don't free id_tracker object. |
a9ad0c8f MD |
718 | */ |
719 | static | |
c92af2a5 | 720 | void fini_id_tracker(struct ust_id_tracker *id_tracker) |
a9ad0c8f | 721 | { |
c92af2a5 | 722 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
723 | struct lttng_ht_iter iter; |
724 | ||
c92af2a5 | 725 | if (!id_tracker->ht) { |
a9ad0c8f MD |
726 | return; |
727 | } | |
728 | rcu_read_lock(); | |
c92af2a5 | 729 | cds_lfht_for_each_entry(id_tracker->ht->ht, |
a9ad0c8f | 730 | &iter.iter, tracker_node, node.node) { |
c92af2a5 | 731 | int ret = lttng_ht_del(id_tracker->ht, &iter); |
a9ad0c8f MD |
732 | |
733 | assert(!ret); | |
c92af2a5 | 734 | destroy_id_tracker_node(tracker_node); |
a9ad0c8f MD |
735 | } |
736 | rcu_read_unlock(); | |
c92af2a5 MD |
737 | ht_cleanup_push(id_tracker->ht); |
738 | id_tracker->ht = NULL; | |
a9ad0c8f MD |
739 | } |
740 | ||
741 | static | |
c92af2a5 MD |
742 | struct ust_id_tracker_node *id_tracker_lookup( |
743 | struct ust_id_tracker *id_tracker, int id, | |
a9ad0c8f MD |
744 | struct lttng_ht_iter *iter) |
745 | { | |
c92af2a5 | 746 | unsigned long _id = (unsigned long) id; |
a9ad0c8f MD |
747 | struct lttng_ht_node_ulong *node; |
748 | ||
c92af2a5 | 749 | lttng_ht_lookup(id_tracker->ht, (void *) _id, iter); |
a9ad0c8f MD |
750 | node = lttng_ht_iter_get_node_ulong(iter); |
751 | if (node) { | |
c92af2a5 | 752 | return caa_container_of(node, struct ust_id_tracker_node, |
a9ad0c8f MD |
753 | node); |
754 | } else { | |
755 | return NULL; | |
756 | } | |
757 | } | |
758 | ||
759 | static | |
c92af2a5 | 760 | int id_tracker_add_id(struct ust_id_tracker *id_tracker, int id) |
a9ad0c8f MD |
761 | { |
762 | int retval = LTTNG_OK; | |
c92af2a5 | 763 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
764 | struct lttng_ht_iter iter; |
765 | ||
c92af2a5 | 766 | if (id < 0) { |
a9ad0c8f MD |
767 | retval = LTTNG_ERR_INVALID; |
768 | goto end; | |
769 | } | |
c92af2a5 | 770 | tracker_node = id_tracker_lookup(id_tracker, id, &iter); |
a9ad0c8f MD |
771 | if (tracker_node) { |
772 | /* Already exists. */ | |
c92af2a5 | 773 | retval = LTTNG_ERR_ID_TRACKED; |
a9ad0c8f MD |
774 | goto end; |
775 | } | |
776 | tracker_node = zmalloc(sizeof(*tracker_node)); | |
777 | if (!tracker_node) { | |
778 | retval = LTTNG_ERR_NOMEM; | |
779 | goto end; | |
780 | } | |
c92af2a5 MD |
781 | lttng_ht_node_init_ulong(&tracker_node->node, (unsigned long) id); |
782 | lttng_ht_add_unique_ulong(id_tracker->ht, &tracker_node->node); | |
a9ad0c8f MD |
783 | end: |
784 | return retval; | |
785 | } | |
786 | ||
787 | static | |
c92af2a5 | 788 | int id_tracker_del_id(struct ust_id_tracker *id_tracker, int id) |
a9ad0c8f MD |
789 | { |
790 | int retval = LTTNG_OK, ret; | |
c92af2a5 | 791 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
792 | struct lttng_ht_iter iter; |
793 | ||
c92af2a5 | 794 | if (id < 0) { |
a9ad0c8f MD |
795 | retval = LTTNG_ERR_INVALID; |
796 | goto end; | |
797 | } | |
c92af2a5 | 798 | tracker_node = id_tracker_lookup(id_tracker, id, &iter); |
a9ad0c8f MD |
799 | if (!tracker_node) { |
800 | /* Not found */ | |
c92af2a5 | 801 | retval = LTTNG_ERR_ID_NOT_TRACKED; |
a9ad0c8f MD |
802 | goto end; |
803 | } | |
c92af2a5 | 804 | ret = lttng_ht_del(id_tracker->ht, &iter); |
a9ad0c8f MD |
805 | assert(!ret); |
806 | ||
c92af2a5 | 807 | destroy_id_tracker_node(tracker_node); |
a9ad0c8f MD |
808 | end: |
809 | return retval; | |
810 | } | |
811 | ||
c92af2a5 MD |
812 | static |
813 | struct ust_id_tracker *get_id_tracker(struct ltt_ust_session *session, | |
814 | enum lttng_tracker_type tracker_type) | |
815 | { | |
816 | switch (tracker_type) { | |
817 | case LTTNG_TRACKER_VPID: | |
818 | return &session->vpid_tracker; | |
819 | case LTTNG_TRACKER_VUID: | |
820 | return &session->vuid_tracker; | |
821 | case LTTNG_TRACKER_VGID: | |
822 | return &session->vgid_tracker; | |
823 | default: | |
824 | return NULL; | |
825 | } | |
826 | } | |
827 | ||
828 | static | |
829 | struct lttng_tracker_list *get_id_tracker_list(struct ltt_ust_session *session, | |
830 | enum lttng_tracker_type tracker_type) | |
831 | { | |
832 | switch (tracker_type) { | |
833 | case LTTNG_TRACKER_VPID: | |
834 | return session->tracker_list_vpid; | |
835 | case LTTNG_TRACKER_VUID: | |
836 | return session->tracker_list_vuid; | |
837 | case LTTNG_TRACKER_VGID: | |
838 | return session->tracker_list_vgid; | |
839 | default: | |
840 | return NULL; | |
841 | } | |
842 | } | |
843 | ||
a9ad0c8f MD |
844 | /* |
845 | * The session lock is held when calling this function. | |
846 | */ | |
c92af2a5 MD |
847 | int trace_ust_id_tracker_lookup(enum lttng_tracker_type tracker_type, |
848 | struct ltt_ust_session *session, int id) | |
a9ad0c8f MD |
849 | { |
850 | struct lttng_ht_iter iter; | |
c92af2a5 | 851 | struct ust_id_tracker *id_tracker; |
a9ad0c8f | 852 | |
c92af2a5 MD |
853 | id_tracker = get_id_tracker(session, tracker_type); |
854 | if (!id_tracker) { | |
855 | abort(); | |
856 | } | |
857 | if (!id_tracker->ht) { | |
a9ad0c8f MD |
858 | return 1; |
859 | } | |
c92af2a5 | 860 | if (id_tracker_lookup(id_tracker, id, &iter)) { |
a9ad0c8f MD |
861 | return 1; |
862 | } | |
863 | return 0; | |
864 | } | |
865 | ||
866 | /* | |
867 | * Called with the session lock held. | |
868 | */ | |
c92af2a5 MD |
869 | int trace_ust_track_id(enum lttng_tracker_type tracker_type, |
870 | struct ltt_ust_session *session, | |
871 | struct lttng_tracker_id *id) | |
a9ad0c8f MD |
872 | { |
873 | int retval = LTTNG_OK; | |
c92af2a5 MD |
874 | struct ust_id_tracker *id_tracker; |
875 | struct lttng_tracker_list *tracker_list; | |
876 | int value; | |
de04bbc8 MD |
877 | struct lttng_tracker_id *saved_ids; |
878 | ssize_t saved_ids_count, i; | |
c92af2a5 MD |
879 | |
880 | if (tracker_type == LTTNG_TRACKER_PID) { | |
881 | DBG("Backward compatible behavior: translate PID tracker to VPID tracker for UST domain."); | |
882 | tracker_type = LTTNG_TRACKER_VPID; | |
883 | } | |
884 | ||
885 | retval = lttng_tracker_id_lookup_string(tracker_type, | |
886 | id, &value); | |
887 | if (retval != LTTNG_OK) { | |
888 | return retval; | |
889 | } | |
c92af2a5 MD |
890 | tracker_list = get_id_tracker_list(session, tracker_type); |
891 | if (!tracker_list) { | |
892 | return LTTNG_ERR_INVALID; | |
893 | } | |
de04bbc8 MD |
894 | /* Save list for restore on error. */ |
895 | saved_ids_count = lttng_tracker_id_get_list(tracker_list, &saved_ids); | |
896 | if (saved_ids_count < 0) { | |
897 | return LTTNG_ERR_INVALID; | |
898 | } | |
899 | /* Add to list. */ | |
c92af2a5 MD |
900 | retval = lttng_tracker_list_add(tracker_list, id); |
901 | if (retval != LTTNG_OK) { | |
de04bbc8 | 902 | goto end; |
c92af2a5 | 903 | } |
a9ad0c8f | 904 | |
c92af2a5 MD |
905 | id_tracker = get_id_tracker(session, tracker_type); |
906 | if (!id_tracker) { | |
907 | abort(); | |
908 | } | |
909 | if (value == -1) { | |
910 | /* Track all ids: destroy tracker if exists. */ | |
911 | if (id_tracker->ht) { | |
912 | fini_id_tracker(id_tracker); | |
a9ad0c8f MD |
913 | /* Ensure all apps have session. */ |
914 | ust_app_global_update_all(session); | |
915 | } | |
916 | } else { | |
c92af2a5 | 917 | if (!id_tracker->ht) { |
a9ad0c8f | 918 | /* Create tracker. */ |
c92af2a5 MD |
919 | retval = init_id_tracker(id_tracker); |
920 | if (retval != LTTNG_OK) { | |
921 | ERR("Error initializing ID tracker"); | |
de04bbc8 | 922 | goto end_restore; |
a9ad0c8f | 923 | } |
c92af2a5 MD |
924 | retval = id_tracker_add_id(id_tracker, value); |
925 | if (retval != LTTNG_OK) { | |
926 | fini_id_tracker(id_tracker); | |
de04bbc8 | 927 | goto end_restore; |
a9ad0c8f | 928 | } |
c92af2a5 | 929 | /* Keep only apps matching ID. */ |
a9ad0c8f MD |
930 | ust_app_global_update_all(session); |
931 | } else { | |
932 | struct ust_app *app; | |
933 | ||
c92af2a5 MD |
934 | retval = id_tracker_add_id(id_tracker, value); |
935 | if (retval != LTTNG_OK) { | |
de04bbc8 | 936 | goto end_restore; |
a9ad0c8f MD |
937 | } |
938 | /* Add session to application */ | |
c92af2a5 MD |
939 | switch (tracker_type) { |
940 | case LTTNG_TRACKER_VPID: | |
941 | app = ust_app_find_by_pid(value); | |
942 | if (app) { | |
943 | ust_app_global_update(session, app); | |
944 | } | |
945 | break; | |
946 | default: | |
947 | /* Keep only apps matching ID. */ | |
948 | ust_app_global_update_all(session); | |
a9ad0c8f MD |
949 | } |
950 | } | |
951 | } | |
de04bbc8 MD |
952 | goto end; |
953 | ||
954 | end_restore: | |
955 | if (lttng_tracker_id_set_list(tracker_list, saved_ids, saved_ids_count) != LTTNG_OK) { | |
956 | ERR("Error on tracker add error handling.\n"); | |
957 | } | |
a9ad0c8f | 958 | end: |
de04bbc8 MD |
959 | for (i = 0; i < saved_ids_count; i++) { |
960 | free(saved_ids[i].string); | |
961 | } | |
962 | free(saved_ids); | |
a9ad0c8f MD |
963 | return retval; |
964 | } | |
965 | ||
966 | /* | |
967 | * Called with the session lock held. | |
968 | */ | |
c92af2a5 MD |
969 | int trace_ust_untrack_id(enum lttng_tracker_type tracker_type, |
970 | struct ltt_ust_session *session, struct lttng_tracker_id *id) | |
a9ad0c8f MD |
971 | { |
972 | int retval = LTTNG_OK; | |
c92af2a5 MD |
973 | struct ust_id_tracker *id_tracker; |
974 | struct lttng_tracker_list *tracker_list; | |
975 | int value; | |
de04bbc8 MD |
976 | struct lttng_tracker_id *saved_ids; |
977 | ssize_t saved_ids_count, i; | |
c92af2a5 MD |
978 | |
979 | if (tracker_type == LTTNG_TRACKER_PID) { | |
980 | DBG("Backward compatible behavior: translate PID tracker to VPID tracker for UST domain."); | |
981 | tracker_type = LTTNG_TRACKER_VPID; | |
982 | } | |
a9ad0c8f | 983 | |
c92af2a5 MD |
984 | retval = lttng_tracker_id_lookup_string(tracker_type, |
985 | id, &value); | |
986 | if (retval != LTTNG_OK) { | |
987 | return retval; | |
988 | } | |
989 | ||
c92af2a5 MD |
990 | tracker_list = get_id_tracker_list(session, tracker_type); |
991 | if (!tracker_list) { | |
992 | return LTTNG_ERR_INVALID; | |
993 | } | |
de04bbc8 MD |
994 | /* Save list for restore on error. */ |
995 | saved_ids_count = lttng_tracker_id_get_list(tracker_list, &saved_ids); | |
996 | if (saved_ids_count < 0) { | |
997 | return LTTNG_ERR_INVALID; | |
998 | } | |
999 | /* Remove from list. */ | |
c92af2a5 MD |
1000 | retval = lttng_tracker_list_remove(tracker_list, id); |
1001 | if (retval != LTTNG_OK) { | |
de04bbc8 | 1002 | goto end; |
c92af2a5 MD |
1003 | } |
1004 | ||
1005 | id_tracker = get_id_tracker(session, tracker_type); | |
1006 | if (!id_tracker) { | |
1007 | abort(); | |
1008 | } | |
1009 | ||
1010 | if (value == -1) { | |
a9ad0c8f | 1011 | /* Create empty tracker, replace old tracker. */ |
c92af2a5 | 1012 | struct ust_id_tracker tmp_tracker; |
a9ad0c8f | 1013 | |
c92af2a5 MD |
1014 | tmp_tracker = *id_tracker; |
1015 | retval = init_id_tracker(id_tracker); | |
1016 | if (retval != LTTNG_OK) { | |
1017 | ERR("Error initializing ID tracker"); | |
a9ad0c8f | 1018 | /* Rollback operation. */ |
c92af2a5 | 1019 | *id_tracker = tmp_tracker; |
de04bbc8 | 1020 | goto end_restore; |
a9ad0c8f | 1021 | } |
c92af2a5 | 1022 | fini_id_tracker(&tmp_tracker); |
a9ad0c8f | 1023 | |
c92af2a5 | 1024 | /* Keep only apps matching ID. */ |
a9ad0c8f MD |
1025 | ust_app_global_update_all(session); |
1026 | } else { | |
a9ad0c8f MD |
1027 | struct ust_app *app; |
1028 | ||
c92af2a5 MD |
1029 | if (!id_tracker->ht) { |
1030 | /* No ID being tracked. */ | |
1031 | retval = LTTNG_ERR_ID_NOT_TRACKED; | |
de04bbc8 | 1032 | goto end_restore; |
a9ad0c8f | 1033 | } |
c92af2a5 MD |
1034 | /* Remove ID from tracker */ |
1035 | retval = id_tracker_del_id(id_tracker, value); | |
1036 | if (retval != LTTNG_OK) { | |
de04bbc8 | 1037 | goto end_restore; |
a9ad0c8f | 1038 | } |
c92af2a5 MD |
1039 | switch (tracker_type) { |
1040 | case LTTNG_TRACKER_VPID: | |
1041 | /* Remove session from application. */ | |
1042 | app = ust_app_find_by_pid(value); | |
1043 | if (app) { | |
1044 | ust_app_global_update(session, app); | |
1045 | } | |
1046 | break; | |
1047 | default: | |
1048 | /* Keep only apps matching ID. */ | |
1049 | ust_app_global_update_all(session); | |
a9ad0c8f MD |
1050 | } |
1051 | } | |
de04bbc8 MD |
1052 | goto end; |
1053 | ||
1054 | end_restore: | |
1055 | if (lttng_tracker_id_set_list(tracker_list, saved_ids, saved_ids_count) != LTTNG_OK) { | |
1056 | ERR("Error on tracker remove error handling.\n"); | |
1057 | } | |
a9ad0c8f | 1058 | end: |
de04bbc8 MD |
1059 | for (i = 0; i < saved_ids_count; i++) { |
1060 | free(saved_ids[i].string); | |
1061 | } | |
1062 | free(saved_ids); | |
a9ad0c8f MD |
1063 | return retval; |
1064 | } | |
1065 | ||
a5dfbb9d MD |
1066 | /* |
1067 | * Called with session lock held. | |
1068 | */ | |
c92af2a5 MD |
1069 | ssize_t trace_ust_list_tracker_ids(enum lttng_tracker_type tracker_type, |
1070 | struct ltt_ust_session *session, | |
1071 | struct lttng_tracker_id **_ids) | |
a5dfbb9d | 1072 | { |
c92af2a5 | 1073 | struct lttng_tracker_list *tracker_list; |
a5dfbb9d | 1074 | |
c92af2a5 MD |
1075 | if (tracker_type == LTTNG_TRACKER_PID) { |
1076 | DBG("Backward compatible behavior: translate PID tracker to VPID tracker for UST domain."); | |
1077 | tracker_type = LTTNG_TRACKER_VPID; | |
a5dfbb9d MD |
1078 | } |
1079 | ||
c92af2a5 MD |
1080 | tracker_list = get_id_tracker_list(session, tracker_type); |
1081 | if (!tracker_list) { | |
1082 | return -LTTNG_ERR_INVALID; | |
a5dfbb9d | 1083 | } |
c92af2a5 | 1084 | return lttng_tracker_id_get_list(tracker_list, _ids); |
a5dfbb9d MD |
1085 | } |
1086 | ||
f6a9efaa DG |
1087 | /* |
1088 | * RCU safe free context structure. | |
1089 | */ | |
1090 | static void destroy_context_rcu(struct rcu_head *head) | |
1091 | { | |
bec39940 DG |
1092 | struct lttng_ht_node_ulong *node = |
1093 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
f6a9efaa DG |
1094 | struct ltt_ust_context *ctx = |
1095 | caa_container_of(node, struct ltt_ust_context, node); | |
1096 | ||
bdf64013 | 1097 | trace_ust_destroy_context(ctx); |
f6a9efaa DG |
1098 | } |
1099 | ||
1100 | /* | |
1101 | * Cleanup UST context hash table. | |
1102 | */ | |
7bd39047 | 1103 | static void destroy_contexts(struct lttng_ht *ht) |
f6a9efaa DG |
1104 | { |
1105 | int ret; | |
bec39940 DG |
1106 | struct lttng_ht_node_ulong *node; |
1107 | struct lttng_ht_iter iter; | |
31746f93 | 1108 | struct ltt_ust_context *ctx; |
f6a9efaa | 1109 | |
0525e9ae DG |
1110 | assert(ht); |
1111 | ||
36b588ed | 1112 | rcu_read_lock(); |
bec39940 | 1113 | cds_lfht_for_each_entry(ht->ht, &iter.iter, node, node) { |
31746f93 DG |
1114 | /* Remove from ordered list. */ |
1115 | ctx = caa_container_of(node, struct ltt_ust_context, node); | |
1116 | cds_list_del(&ctx->list); | |
1117 | /* Remove from channel's hash table. */ | |
bec39940 | 1118 | ret = lttng_ht_del(ht, &iter); |
f6a9efaa DG |
1119 | if (!ret) { |
1120 | call_rcu(&node->head, destroy_context_rcu); | |
1121 | } | |
f6a9efaa | 1122 | } |
36b588ed | 1123 | rcu_read_unlock(); |
ed52805d | 1124 | |
0b2dc8df | 1125 | ht_cleanup_push(ht); |
f6a9efaa DG |
1126 | } |
1127 | ||
97ee3a89 DG |
1128 | /* |
1129 | * Cleanup ust event structure. | |
1130 | */ | |
1131 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
1132 | { | |
0525e9ae DG |
1133 | assert(event); |
1134 | ||
f6a9efaa | 1135 | DBG2("Trace destroy UST event %s", event->attr.name); |
6b453b5e | 1136 | free(event->filter_expression); |
53a80697 | 1137 | free(event->filter); |
40024f8a | 1138 | free(event->exclusion); |
97ee3a89 DG |
1139 | free(event); |
1140 | } | |
1141 | ||
bdf64013 JG |
1142 | /* |
1143 | * Cleanup ust context structure. | |
1144 | */ | |
1145 | void trace_ust_destroy_context(struct ltt_ust_context *ctx) | |
1146 | { | |
1147 | assert(ctx); | |
1148 | ||
1149 | if (ctx->ctx.ctx == LTTNG_UST_CONTEXT_APP_CONTEXT) { | |
1150 | free(ctx->ctx.u.app_ctx.provider_name); | |
1151 | free(ctx->ctx.u.app_ctx.ctx_name); | |
1152 | } | |
1153 | free(ctx); | |
1154 | } | |
1155 | ||
f6a9efaa DG |
1156 | /* |
1157 | * URCU intermediate call to complete destroy event. | |
1158 | */ | |
1159 | static void destroy_event_rcu(struct rcu_head *head) | |
1160 | { | |
bec39940 DG |
1161 | struct lttng_ht_node_str *node = |
1162 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
1163 | struct ltt_ust_event *event = |
1164 | caa_container_of(node, struct ltt_ust_event, node); | |
1165 | ||
1166 | trace_ust_destroy_event(event); | |
1167 | } | |
1168 | ||
284d8f55 DG |
1169 | /* |
1170 | * Cleanup UST events hashtable. | |
1171 | */ | |
7bd39047 | 1172 | static void destroy_events(struct lttng_ht *events) |
ed52805d DG |
1173 | { |
1174 | int ret; | |
bec39940 DG |
1175 | struct lttng_ht_node_str *node; |
1176 | struct lttng_ht_iter iter; | |
ed52805d | 1177 | |
0525e9ae DG |
1178 | assert(events); |
1179 | ||
36b588ed | 1180 | rcu_read_lock(); |
bec39940 DG |
1181 | cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) { |
1182 | ret = lttng_ht_del(events, &iter); | |
7bd39047 DG |
1183 | assert(!ret); |
1184 | call_rcu(&node->head, destroy_event_rcu); | |
ed52805d | 1185 | } |
36b588ed | 1186 | rcu_read_unlock(); |
ed52805d | 1187 | |
0b2dc8df | 1188 | ht_cleanup_push(events); |
ed52805d DG |
1189 | } |
1190 | ||
97ee3a89 DG |
1191 | /* |
1192 | * Cleanup ust channel structure. | |
36b588ed MD |
1193 | * |
1194 | * Should _NOT_ be called with RCU read lock held. | |
97ee3a89 | 1195 | */ |
36b588ed | 1196 | static void _trace_ust_destroy_channel(struct ltt_ust_channel *channel) |
97ee3a89 | 1197 | { |
0525e9ae DG |
1198 | assert(channel); |
1199 | ||
f6a9efaa | 1200 | DBG2("Trace destroy UST channel %s", channel->name); |
97ee3a89 | 1201 | |
97ee3a89 | 1202 | free(channel); |
f6a9efaa DG |
1203 | } |
1204 | ||
1205 | /* | |
1206 | * URCU intermediate call to complete destroy channel. | |
1207 | */ | |
1208 | static void destroy_channel_rcu(struct rcu_head *head) | |
1209 | { | |
bec39940 DG |
1210 | struct lttng_ht_node_str *node = |
1211 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
1212 | struct ltt_ust_channel *channel = |
1213 | caa_container_of(node, struct ltt_ust_channel, node); | |
1214 | ||
36b588ed MD |
1215 | _trace_ust_destroy_channel(channel); |
1216 | } | |
1217 | ||
1218 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
1219 | { | |
627cbbe7 MD |
1220 | /* Destroying all events of the channel */ |
1221 | destroy_events(channel->events); | |
1222 | /* Destroying all context of the channel */ | |
1223 | destroy_contexts(channel->ctx); | |
1224 | ||
36b588ed | 1225 | call_rcu(&channel->node.head, destroy_channel_rcu); |
97ee3a89 DG |
1226 | } |
1227 | ||
d5979e4a DG |
1228 | /* |
1229 | * Remove an UST channel from a channel HT. | |
1230 | */ | |
1231 | void trace_ust_delete_channel(struct lttng_ht *ht, | |
1232 | struct ltt_ust_channel *channel) | |
1233 | { | |
1234 | int ret; | |
1235 | struct lttng_ht_iter iter; | |
1236 | ||
1237 | assert(ht); | |
1238 | assert(channel); | |
1239 | ||
1240 | iter.iter.node = &channel->node.node; | |
1241 | ret = lttng_ht_del(ht, &iter); | |
1242 | assert(!ret); | |
1243 | } | |
1244 | ||
97ee3a89 | 1245 | /* |
f6a9efaa | 1246 | * Iterate over a hash table containing channels and cleanup safely. |
97ee3a89 | 1247 | */ |
bec39940 | 1248 | static void destroy_channels(struct lttng_ht *channels) |
f6a9efaa | 1249 | { |
bec39940 DG |
1250 | struct lttng_ht_node_str *node; |
1251 | struct lttng_ht_iter iter; | |
f6a9efaa | 1252 | |
0525e9ae DG |
1253 | assert(channels); |
1254 | ||
24d1723f | 1255 | rcu_read_lock(); |
bec39940 | 1256 | cds_lfht_for_each_entry(channels->ht, &iter.iter, node, node) { |
627cbbe7 MD |
1257 | struct ltt_ust_channel *chan = |
1258 | caa_container_of(node, struct ltt_ust_channel, node); | |
1259 | ||
1260 | trace_ust_delete_channel(channels, chan); | |
1261 | trace_ust_destroy_channel(chan); | |
f6a9efaa | 1262 | } |
36b588ed | 1263 | rcu_read_unlock(); |
ed52805d | 1264 | |
0b2dc8df | 1265 | ht_cleanup_push(channels); |
f6a9efaa DG |
1266 | } |
1267 | ||
f6a9efaa DG |
1268 | /* |
1269 | * Cleanup UST global domain. | |
1270 | */ | |
1271 | static void destroy_domain_global(struct ltt_ust_domain_global *dom) | |
1272 | { | |
0525e9ae DG |
1273 | assert(dom); |
1274 | ||
f6a9efaa DG |
1275 | destroy_channels(dom->channels); |
1276 | } | |
97ee3a89 | 1277 | |
f6a9efaa DG |
1278 | /* |
1279 | * Cleanup ust session structure | |
36b588ed MD |
1280 | * |
1281 | * Should *NOT* be called with RCU read-side lock held. | |
f6a9efaa DG |
1282 | */ |
1283 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
1284 | { | |
fefd409b | 1285 | struct agent *agt; |
7972aab2 | 1286 | struct buffer_reg_uid *reg, *sreg; |
fefd409b | 1287 | struct lttng_ht_iter iter; |
7972aab2 | 1288 | |
0525e9ae | 1289 | assert(session); |
97ee3a89 | 1290 | |
d9bf3ca4 | 1291 | DBG2("Trace UST destroy session %" PRIu64, session->id); |
f6a9efaa | 1292 | |
f6a9efaa DG |
1293 | /* Cleaning up UST domain */ |
1294 | destroy_domain_global(&session->domain_global); | |
fefd409b | 1295 | |
0c0fcd77 | 1296 | rcu_read_lock(); |
fefd409b | 1297 | cds_lfht_for_each_entry(session->agents->ht, &iter.iter, agt, node.node) { |
d0edf546 JG |
1298 | int ret = lttng_ht_del(session->agents, &iter); |
1299 | ||
1300 | assert(!ret); | |
fefd409b DG |
1301 | agent_destroy(agt); |
1302 | } | |
0c0fcd77 | 1303 | rcu_read_unlock(); |
7972aab2 | 1304 | |
8ada2175 MD |
1305 | ht_cleanup_push(session->agents); |
1306 | ||
7972aab2 DG |
1307 | /* Cleanup UID buffer registry object(s). */ |
1308 | cds_list_for_each_entry_safe(reg, sreg, &session->buffer_reg_uid_list, | |
1309 | lnode) { | |
1310 | cds_list_del(®->lnode); | |
1311 | buffer_reg_uid_remove(reg); | |
1312 | buffer_reg_uid_destroy(reg, session->consumer); | |
1313 | } | |
44d3bd01 | 1314 | |
6addfa37 | 1315 | consumer_output_put(session->consumer); |
3f8e211f | 1316 | |
c92af2a5 MD |
1317 | lttng_tracker_list_destroy(session->tracker_list_vpid); |
1318 | lttng_tracker_list_destroy(session->tracker_list_vuid); | |
1319 | lttng_tracker_list_destroy(session->tracker_list_vgid); | |
1320 | ||
1321 | fini_id_tracker(&session->vpid_tracker); | |
1322 | fini_id_tracker(&session->vuid_tracker); | |
1323 | fini_id_tracker(&session->vgid_tracker); | |
a9ad0c8f | 1324 | |
97ee3a89 DG |
1325 | free(session); |
1326 | } |