Commit | Line | Data |
---|---|---|
97ee3a89 | 1 | /* |
21cf9b6b | 2 | * Copyright (C) 2011 EfficiOS Inc. |
ab5be9fa | 3 | * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
97ee3a89 | 4 | * |
ab5be9fa | 5 | * SPDX-License-Identifier: GPL-2.0-only |
97ee3a89 | 6 | * |
97ee3a89 DG |
7 | */ |
8 | ||
6c1c0768 | 9 | #define _LGPL_SOURCE |
97ee3a89 DG |
10 | #include <stdio.h> |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
13 | #include <unistd.h> | |
d9bf3ca4 | 14 | #include <inttypes.h> |
97ee3a89 | 15 | |
c9e313bc SM |
16 | #include <common/common.hpp> |
17 | #include <common/defaults.hpp> | |
18 | #include <common/trace-chunk.hpp> | |
19 | #include <common/utils.hpp> | |
97ee3a89 | 20 | |
c9e313bc SM |
21 | #include "buffer-registry.hpp" |
22 | #include "trace-ust.hpp" | |
23 | #include "utils.hpp" | |
24 | #include "ust-app.hpp" | |
25 | #include "agent.hpp" | |
97ee3a89 | 26 | |
b0f2e8db JG |
27 | namespace lsu = lttng::sessiond::ust; |
28 | ||
025faf73 DG |
29 | /* |
30 | * Match function for the events hash table lookup. | |
31 | * | |
32 | * Matches by name only. Used by the disable command. | |
33 | */ | |
18eace3b DG |
34 | int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node, |
35 | const void *_key) | |
36 | { | |
37 | struct ltt_ust_event *event; | |
38 | const char *name; | |
39 | ||
a0377dfe FD |
40 | LTTNG_ASSERT(node); |
41 | LTTNG_ASSERT(_key); | |
18eace3b DG |
42 | |
43 | event = caa_container_of(node, struct ltt_ust_event, node.node); | |
7966af57 | 44 | name = (const char *) _key; |
18eace3b DG |
45 | |
46 | /* Event name */ | |
47 | if (strncmp(event->attr.name, name, sizeof(event->attr.name)) != 0) { | |
48 | goto no_match; | |
49 | } | |
50 | ||
025faf73 | 51 | /* Match */ |
18eace3b DG |
52 | return 1; |
53 | ||
54 | no_match: | |
55 | return 0; | |
56 | } | |
57 | ||
025faf73 DG |
58 | /* |
59 | * Match function for the hash table lookup. | |
60 | * | |
61 | * It matches an ust event based on three attributes which are the event name, | |
62 | * the filter bytecode and the loglevel. | |
63 | */ | |
18eace3b DG |
64 | int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key) |
65 | { | |
66 | struct ltt_ust_event *event; | |
67 | const struct ltt_ust_ht_key *key; | |
2106efa0 | 68 | int ev_loglevel_value; |
19a97244 | 69 | int ll_match; |
18eace3b | 70 | |
a0377dfe FD |
71 | LTTNG_ASSERT(node); |
72 | LTTNG_ASSERT(_key); | |
18eace3b DG |
73 | |
74 | event = caa_container_of(node, struct ltt_ust_event, node.node); | |
7966af57 | 75 | key = (ltt_ust_ht_key *) _key; |
2106efa0 | 76 | ev_loglevel_value = event->attr.loglevel; |
18eace3b | 77 | |
f19e9f8b | 78 | /* Match the 4 elements of the key: name, filter, loglevel, exclusions. */ |
18eace3b DG |
79 | |
80 | /* Event name */ | |
81 | if (strncmp(event->attr.name, key->name, sizeof(event->attr.name)) != 0) { | |
18eace3b DG |
82 | goto no_match; |
83 | } | |
84 | ||
b953b8cd | 85 | /* Event loglevel value and type. */ |
19a97244 PP |
86 | ll_match = loglevels_match(event->attr.loglevel_type, |
87 | ev_loglevel_value, key->loglevel_type, | |
fc4b93fa | 88 | key->loglevel_value, LTTNG_UST_ABI_LOGLEVEL_ALL); |
19a97244 PP |
89 | |
90 | if (!ll_match) { | |
b953b8cd | 91 | goto no_match; |
18eace3b DG |
92 | } |
93 | ||
94 | /* Only one of the filters is NULL, fail. */ | |
95 | if ((key->filter && !event->filter) || (!key->filter && event->filter)) { | |
18eace3b DG |
96 | goto no_match; |
97 | } | |
98 | ||
025faf73 DG |
99 | if (key->filter && event->filter) { |
100 | /* Both filters exists, check length followed by the bytecode. */ | |
101 | if (event->filter->len != key->filter->len || | |
102 | memcmp(event->filter->data, key->filter->data, | |
103 | event->filter->len) != 0) { | |
104 | goto no_match; | |
105 | } | |
18eace3b DG |
106 | } |
107 | ||
f19e9f8b JI |
108 | /* If only one of the exclusions is NULL, fail. */ |
109 | if ((key->exclusion && !event->exclusion) || (!key->exclusion && event->exclusion)) { | |
110 | goto no_match; | |
111 | } | |
112 | ||
113 | if (key->exclusion && event->exclusion) { | |
a5b7e00c PP |
114 | size_t i; |
115 | ||
116 | /* Check exclusion counts first. */ | |
117 | if (event->exclusion->count != key->exclusion->count) { | |
f19e9f8b JI |
118 | goto no_match; |
119 | } | |
a5b7e00c PP |
120 | |
121 | /* Compare names individually. */ | |
122 | for (i = 0; i < event->exclusion->count; ++i) { | |
123 | size_t j; | |
124 | bool found = false; | |
125 | const char *name_ev = | |
126 | LTTNG_EVENT_EXCLUSION_NAME_AT( | |
127 | event->exclusion, i); | |
128 | ||
129 | /* | |
130 | * Compare this exclusion name to all the key's | |
131 | * exclusion names. | |
132 | */ | |
133 | for (j = 0; j < key->exclusion->count; ++j) { | |
134 | const char *name_key = | |
135 | LTTNG_EVENT_EXCLUSION_NAME_AT( | |
136 | key->exclusion, j); | |
137 | ||
138 | if (!strncmp(name_ev, name_key, | |
139 | LTTNG_SYMBOL_NAME_LEN)) { | |
140 | /* Names match! */ | |
141 | found = true; | |
142 | break; | |
143 | } | |
144 | } | |
145 | ||
146 | /* | |
147 | * If the current exclusion name was not found amongst | |
148 | * the key's exclusion names, then there's no match. | |
149 | */ | |
150 | if (!found) { | |
151 | goto no_match; | |
152 | } | |
153 | } | |
f19e9f8b | 154 | } |
025faf73 DG |
155 | /* Match. */ |
156 | return 1; | |
18eace3b DG |
157 | |
158 | no_match: | |
159 | return 0; | |
18eace3b DG |
160 | } |
161 | ||
0177d773 | 162 | /* |
2223c96f DG |
163 | * Find the channel in the hashtable and return channel pointer. RCU read side |
164 | * lock MUST be acquired before calling this. | |
0177d773 | 165 | */ |
bec39940 | 166 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, |
df4f5a87 | 167 | const char *name) |
0177d773 | 168 | { |
bec39940 DG |
169 | struct lttng_ht_node_str *node; |
170 | struct lttng_ht_iter iter; | |
0177d773 | 171 | |
48b7cdc2 | 172 | ASSERT_RCU_READ_LOCKED(); |
85076754 MD |
173 | /* |
174 | * If we receive an empty string for channel name, it means the | |
175 | * default channel name is requested. | |
176 | */ | |
177 | if (name[0] == '\0') | |
178 | name = DEFAULT_CHANNEL_NAME; | |
179 | ||
bec39940 DG |
180 | lttng_ht_lookup(ht, (void *)name, &iter); |
181 | node = lttng_ht_iter_get_node_str(&iter); | |
f6a9efaa | 182 | if (node == NULL) { |
44d3bd01 DG |
183 | goto error; |
184 | } | |
185 | ||
f6a9efaa | 186 | DBG2("Trace UST channel %s found by name", name); |
0177d773 | 187 | |
0114db0e | 188 | return lttng::utils::container_of(node, <t_ust_channel::node); |
97ee3a89 DG |
189 | |
190 | error: | |
f6a9efaa | 191 | DBG2("Trace UST channel %s not found by name", name); |
97ee3a89 DG |
192 | return NULL; |
193 | } | |
194 | ||
195 | /* | |
2223c96f DG |
196 | * Find the event in the hashtable and return event pointer. RCU read side lock |
197 | * MUST be acquired before calling this. | |
97ee3a89 | 198 | */ |
18eace3b | 199 | struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht, |
2b00d462 | 200 | char *name, struct lttng_bytecode *filter, |
fc4b93fa | 201 | enum lttng_ust_abi_loglevel_type loglevel_type, int loglevel_value, |
b953b8cd | 202 | struct lttng_event_exclusion *exclusion) |
97ee3a89 | 203 | { |
bec39940 DG |
204 | struct lttng_ht_node_str *node; |
205 | struct lttng_ht_iter iter; | |
18eace3b | 206 | struct ltt_ust_ht_key key; |
97ee3a89 | 207 | |
a0377dfe FD |
208 | LTTNG_ASSERT(name); |
209 | LTTNG_ASSERT(ht); | |
48b7cdc2 | 210 | ASSERT_RCU_READ_LOCKED(); |
18eace3b DG |
211 | |
212 | key.name = name; | |
213 | key.filter = filter; | |
b953b8cd PP |
214 | key.loglevel_type = loglevel_type; |
215 | key.loglevel_value = loglevel_value; | |
10646003 | 216 | key.exclusion = exclusion; |
18eace3b | 217 | |
18eace3b DG |
218 | cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed), |
219 | trace_ust_ht_match_event, &key, &iter.iter); | |
bec39940 | 220 | node = lttng_ht_iter_get_node_str(&iter); |
f6a9efaa | 221 | if (node == NULL) { |
97ee3a89 DG |
222 | goto error; |
223 | } | |
224 | ||
18eace3b | 225 | DBG2("Trace UST event %s found", key.name); |
f6a9efaa | 226 | |
0114db0e | 227 | return lttng::utils::container_of(node, <t_ust_event::node); |
97ee3a89 DG |
228 | |
229 | error: | |
18eace3b | 230 | DBG2("Trace UST event %s NOT found", key.name); |
97ee3a89 DG |
231 | return NULL; |
232 | } | |
233 | ||
fefd409b DG |
234 | /* |
235 | * Lookup an agent in the session agents hash table by domain type and return | |
236 | * the object if found else NULL. | |
4da703ad JG |
237 | * |
238 | * RCU read side lock must be acquired before calling and only released | |
239 | * once the agent is no longer in scope or being used. | |
fefd409b DG |
240 | */ |
241 | struct agent *trace_ust_find_agent(struct ltt_ust_session *session, | |
242 | enum lttng_domain_type domain_type) | |
243 | { | |
244 | struct agent *agt = NULL; | |
245 | struct lttng_ht_node_u64 *node; | |
246 | struct lttng_ht_iter iter; | |
247 | uint64_t key; | |
248 | ||
a0377dfe | 249 | LTTNG_ASSERT(session); |
fefd409b DG |
250 | |
251 | DBG3("Trace ust agent lookup for domain %d", domain_type); | |
252 | ||
253 | key = domain_type; | |
254 | ||
255 | lttng_ht_lookup(session->agents, &key, &iter); | |
256 | node = lttng_ht_iter_get_node_u64(&iter); | |
257 | if (!node) { | |
258 | goto end; | |
259 | } | |
0114db0e | 260 | agt = lttng::utils::container_of(node, &agent::node); |
fefd409b DG |
261 | |
262 | end: | |
263 | return agt; | |
264 | } | |
265 | ||
97ee3a89 DG |
266 | /* |
267 | * Allocate and initialize a ust session data structure. | |
268 | * | |
269 | * Return pointer to structure or NULL. | |
270 | */ | |
d9bf3ca4 | 271 | struct ltt_ust_session *trace_ust_create_session(uint64_t session_id) |
97ee3a89 DG |
272 | { |
273 | struct ltt_ust_session *lus; | |
274 | ||
275 | /* Allocate a new ltt ust session */ | |
64803277 | 276 | lus = zmalloc<ltt_ust_session>(); |
97ee3a89 | 277 | if (lus == NULL) { |
ba7f0ae5 | 278 | PERROR("create ust session zmalloc"); |
55c9e7ca | 279 | goto error_alloc; |
97ee3a89 DG |
280 | } |
281 | ||
282 | /* Init data structure */ | |
a991f516 | 283 | lus->id = session_id; |
14fb1ebe | 284 | lus->active = 0; |
97ee3a89 | 285 | |
84ad93e8 DG |
286 | /* Set default metadata channel attribute. */ |
287 | lus->metadata_attr.overwrite = DEFAULT_CHANNEL_OVERWRITE; | |
288 | lus->metadata_attr.subbuf_size = default_get_metadata_subbuf_size(); | |
289 | lus->metadata_attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM; | |
290 | lus->metadata_attr.switch_timer_interval = DEFAULT_METADATA_SWITCH_TIMER; | |
291 | lus->metadata_attr.read_timer_interval = DEFAULT_METADATA_READ_TIMER; | |
fc4b93fa | 292 | lus->metadata_attr.output = LTTNG_UST_ABI_MMAP; |
84ad93e8 | 293 | |
7972aab2 DG |
294 | /* |
295 | * Default buffer type. This can be changed through an enable channel | |
296 | * requesting a different type. Note that this can only be changed once | |
297 | * during the session lifetime which is at the first enable channel and | |
298 | * only before start. The flag buffer_type_changed indicates the status. | |
299 | */ | |
8692d4e5 | 300 | lus->buffer_type = LTTNG_BUFFER_PER_UID; |
7972aab2 DG |
301 | /* Once set to 1, the buffer_type is immutable for the session. */ |
302 | lus->buffer_type_changed = 0; | |
303 | /* Init it in case it get used after allocation. */ | |
304 | CDS_INIT_LIST_HEAD(&lus->buffer_reg_uid_list); | |
f6a9efaa DG |
305 | |
306 | /* Alloc UST global domain channels' HT */ | |
bec39940 | 307 | lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
fefd409b DG |
308 | /* Alloc agent hash table. */ |
309 | lus->agents = lttng_ht_new(0, LTTNG_HT_TYPE_U64); | |
44d3bd01 | 310 | |
159b042f JG |
311 | lus->tracker_vpid = process_attr_tracker_create(); |
312 | if (!lus->tracker_vpid) { | |
55c9e7ca JR |
313 | goto error; |
314 | } | |
159b042f JG |
315 | lus->tracker_vuid = process_attr_tracker_create(); |
316 | if (!lus->tracker_vuid) { | |
55c9e7ca JR |
317 | goto error; |
318 | } | |
159b042f JG |
319 | lus->tracker_vgid = process_attr_tracker_create(); |
320 | if (!lus->tracker_vgid) { | |
55c9e7ca JR |
321 | goto error; |
322 | } | |
00e2e675 DG |
323 | lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL); |
324 | if (lus->consumer == NULL) { | |
55c9e7ca | 325 | goto error; |
00e2e675 DG |
326 | } |
327 | ||
44d3bd01 DG |
328 | DBG2("UST trace session create successful"); |
329 | ||
97ee3a89 DG |
330 | return lus; |
331 | ||
55c9e7ca | 332 | error: |
159b042f JG |
333 | process_attr_tracker_destroy(lus->tracker_vpid); |
334 | process_attr_tracker_destroy(lus->tracker_vuid); | |
335 | process_attr_tracker_destroy(lus->tracker_vgid); | |
3c339053 FD |
336 | lttng_ht_destroy(lus->domain_global.channels); |
337 | lttng_ht_destroy(lus->agents); | |
44844c29 | 338 | free(lus); |
55c9e7ca | 339 | error_alloc: |
97ee3a89 DG |
340 | return NULL; |
341 | } | |
342 | ||
343 | /* | |
344 | * Allocate and initialize a ust channel data structure. | |
345 | * | |
346 | * Return pointer to structure or NULL. | |
347 | */ | |
51755dc8 JG |
348 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan, |
349 | enum lttng_domain_type domain) | |
97ee3a89 | 350 | { |
97ee3a89 DG |
351 | struct ltt_ust_channel *luc; |
352 | ||
a0377dfe | 353 | LTTNG_ASSERT(chan); |
0525e9ae | 354 | |
64803277 | 355 | luc = zmalloc<ltt_ust_channel>(); |
97ee3a89 | 356 | if (luc == NULL) { |
df0f840b | 357 | PERROR("ltt_ust_channel zmalloc"); |
97ee3a89 DG |
358 | goto error; |
359 | } | |
360 | ||
51755dc8 JG |
361 | luc->domain = domain; |
362 | ||
44d3bd01 | 363 | /* Copy UST channel attributes */ |
48842b30 DG |
364 | luc->attr.overwrite = chan->attr.overwrite; |
365 | luc->attr.subbuf_size = chan->attr.subbuf_size; | |
366 | luc->attr.num_subbuf = chan->attr.num_subbuf; | |
367 | luc->attr.switch_timer_interval = chan->attr.switch_timer_interval; | |
368 | luc->attr.read_timer_interval = chan->attr.read_timer_interval; | |
fc4b93fa | 369 | luc->attr.output = (enum lttng_ust_abi_output) chan->attr.output; |
82b4ebce JG |
370 | luc->monitor_timer_interval = ((struct lttng_channel_extended *) |
371 | chan->attr.extended.ptr)->monitor_timer_interval; | |
491d1539 MD |
372 | luc->attr.u.s.blocking_timeout = ((struct lttng_channel_extended *) |
373 | chan->attr.extended.ptr)->blocking_timeout; | |
44d3bd01 DG |
374 | |
375 | /* Translate to UST output enum */ | |
376 | switch (luc->attr.output) { | |
377 | default: | |
fc4b93fa | 378 | luc->attr.output = LTTNG_UST_ABI_MMAP; |
44d3bd01 | 379 | break; |
97ee3a89 | 380 | } |
97ee3a89 | 381 | |
85076754 MD |
382 | /* |
383 | * If we receive an empty string for channel name, it means the | |
384 | * default channel name is requested. | |
385 | */ | |
386 | if (chan->name[0] == '\0') { | |
387 | strncpy(luc->name, DEFAULT_CHANNEL_NAME, sizeof(luc->name)); | |
388 | } else { | |
389 | /* Copy channel name */ | |
390 | strncpy(luc->name, chan->name, sizeof(luc->name)); | |
391 | } | |
fc4b93fa | 392 | luc->name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; |
97ee3a89 | 393 | |
f6a9efaa | 394 | /* Init node */ |
bec39940 | 395 | lttng_ht_node_init_str(&luc->node, luc->name); |
31746f93 DG |
396 | CDS_INIT_LIST_HEAD(&luc->ctx_list); |
397 | ||
f6a9efaa | 398 | /* Alloc hash tables */ |
bec39940 DG |
399 | luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
400 | luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
f6a9efaa | 401 | |
1624d5b7 JD |
402 | /* On-disk circular buffer parameters */ |
403 | luc->tracefile_size = chan->attr.tracefile_size; | |
404 | luc->tracefile_count = chan->attr.tracefile_count; | |
405 | ||
f6a9efaa DG |
406 | DBG2("Trace UST channel %s created", luc->name); |
407 | ||
97ee3a89 | 408 | error: |
7972aab2 | 409 | return luc; |
97ee3a89 DG |
410 | } |
411 | ||
ad11a1d3 PP |
412 | /* |
413 | * Validates an exclusion list. | |
414 | * | |
415 | * Returns 0 if valid, negative value if invalid. | |
416 | */ | |
417 | static int validate_exclusion(struct lttng_event_exclusion *exclusion) | |
418 | { | |
419 | size_t i; | |
420 | int ret = 0; | |
421 | ||
a0377dfe | 422 | LTTNG_ASSERT(exclusion); |
ad11a1d3 PP |
423 | |
424 | for (i = 0; i < exclusion->count; ++i) { | |
425 | size_t j; | |
426 | const char *name_a = | |
427 | LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, i); | |
428 | ||
429 | for (j = 0; j < i; ++j) { | |
430 | const char *name_b = | |
431 | LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, j); | |
432 | ||
433 | if (!strncmp(name_a, name_b, LTTNG_SYMBOL_NAME_LEN)) { | |
434 | /* Match! */ | |
435 | ret = -1; | |
436 | goto end; | |
437 | } | |
438 | } | |
439 | } | |
440 | ||
441 | end: | |
442 | return ret; | |
443 | } | |
444 | ||
97ee3a89 DG |
445 | /* |
446 | * Allocate and initialize a ust event. Set name and event type. | |
49d21f93 | 447 | * We own filter_expression, filter, and exclusion. |
97ee3a89 | 448 | * |
39687410 | 449 | * Return an lttng_error_code |
97ee3a89 | 450 | */ |
39687410 | 451 | enum lttng_error_code trace_ust_create_event(struct lttng_event *ev, |
6b453b5e | 452 | char *filter_expression, |
2b00d462 | 453 | struct lttng_bytecode *filter, |
88f06f15 | 454 | struct lttng_event_exclusion *exclusion, |
39687410 FD |
455 | bool internal_event, |
456 | struct ltt_ust_event **ust_event) | |
97ee3a89 | 457 | { |
39687410 FD |
458 | struct ltt_ust_event *local_ust_event; |
459 | enum lttng_error_code ret = LTTNG_OK; | |
97ee3a89 | 460 | |
a0377dfe | 461 | LTTNG_ASSERT(ev); |
0525e9ae | 462 | |
ad11a1d3 | 463 | if (exclusion && validate_exclusion(exclusion)) { |
39687410 | 464 | ret = LTTNG_ERR_INVALID; |
ad11a1d3 PP |
465 | goto error; |
466 | } | |
467 | ||
64803277 | 468 | local_ust_event = zmalloc<ltt_ust_event>(); |
39687410 | 469 | if (local_ust_event == NULL) { |
ba7f0ae5 | 470 | PERROR("ust event zmalloc"); |
39687410 | 471 | ret = LTTNG_ERR_NOMEM; |
97ee3a89 DG |
472 | goto error; |
473 | } | |
474 | ||
39687410 | 475 | local_ust_event->internal = internal_event; |
88f06f15 | 476 | |
97ee3a89 DG |
477 | switch (ev->type) { |
478 | case LTTNG_EVENT_PROBE: | |
fc4b93fa | 479 | local_ust_event->attr.instrumentation = LTTNG_UST_ABI_PROBE; |
97ee3a89 DG |
480 | break; |
481 | case LTTNG_EVENT_FUNCTION: | |
fc4b93fa | 482 | local_ust_event->attr.instrumentation = LTTNG_UST_ABI_FUNCTION; |
97ee3a89 DG |
483 | break; |
484 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
fc4b93fa | 485 | local_ust_event->attr.instrumentation = LTTNG_UST_ABI_FUNCTION; |
97ee3a89 DG |
486 | break; |
487 | case LTTNG_EVENT_TRACEPOINT: | |
fc4b93fa | 488 | local_ust_event->attr.instrumentation = LTTNG_UST_ABI_TRACEPOINT; |
97ee3a89 DG |
489 | break; |
490 | default: | |
491 | ERR("Unknown ust instrumentation type (%d)", ev->type); | |
39687410 | 492 | ret = LTTNG_ERR_INVALID; |
44844c29 | 493 | goto error_free_event; |
97ee3a89 DG |
494 | } |
495 | ||
496 | /* Copy event name */ | |
fc4b93fa MD |
497 | strncpy(local_ust_event->attr.name, ev->name, LTTNG_UST_ABI_SYM_NAME_LEN); |
498 | local_ust_event->attr.name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
97ee3a89 | 499 | |
0cda4f28 | 500 | switch (ev->loglevel_type) { |
8005f29a | 501 | case LTTNG_EVENT_LOGLEVEL_ALL: |
fc4b93fa | 502 | local_ust_event->attr.loglevel_type = LTTNG_UST_ABI_LOGLEVEL_ALL; |
39687410 | 503 | local_ust_event->attr.loglevel = -1; /* Force to -1 */ |
0cda4f28 | 504 | break; |
8005f29a | 505 | case LTTNG_EVENT_LOGLEVEL_RANGE: |
fc4b93fa | 506 | local_ust_event->attr.loglevel_type = LTTNG_UST_ABI_LOGLEVEL_RANGE; |
39687410 | 507 | local_ust_event->attr.loglevel = ev->loglevel; |
8005f29a MD |
508 | break; |
509 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
fc4b93fa | 510 | local_ust_event->attr.loglevel_type = LTTNG_UST_ABI_LOGLEVEL_SINGLE; |
39687410 | 511 | local_ust_event->attr.loglevel = ev->loglevel; |
0cda4f28 MD |
512 | break; |
513 | default: | |
4431494b | 514 | ERR("Unknown ust loglevel type (%d)", ev->loglevel_type); |
39687410 | 515 | ret = LTTNG_ERR_INVALID; |
0cda4f28 MD |
516 | goto error_free_event; |
517 | } | |
518 | ||
025faf73 | 519 | /* Same layout. */ |
39687410 FD |
520 | local_ust_event->filter_expression = filter_expression; |
521 | local_ust_event->filter = filter; | |
522 | local_ust_event->exclusion = exclusion; | |
0cda4f28 | 523 | |
f6a9efaa | 524 | /* Init node */ |
39687410 | 525 | lttng_ht_node_init_str(&local_ust_event->node, local_ust_event->attr.name); |
97ee3a89 | 526 | |
300b8fd5 | 527 | DBG2("Trace UST event %s, loglevel (%d,%d) created", |
39687410 FD |
528 | local_ust_event->attr.name, local_ust_event->attr.loglevel_type, |
529 | local_ust_event->attr.loglevel); | |
530 | ||
531 | *ust_event = local_ust_event; | |
284d8f55 | 532 | |
39687410 | 533 | return ret; |
97ee3a89 | 534 | |
44844c29 | 535 | error_free_event: |
39687410 | 536 | free(local_ust_event); |
97ee3a89 | 537 | error: |
49d21f93 MD |
538 | free(filter_expression); |
539 | free(filter); | |
540 | free(exclusion); | |
39687410 | 541 | return ret; |
97ee3a89 DG |
542 | } |
543 | ||
aa3514e9 | 544 | static |
bdf64013 JG |
545 | int trace_ust_context_type_event_to_ust( |
546 | enum lttng_event_context_type type) | |
55cc08a6 | 547 | { |
aa3514e9 | 548 | int utype; |
0525e9ae | 549 | |
aa3514e9 | 550 | switch (type) { |
9197c5c4 | 551 | case LTTNG_EVENT_CONTEXT_VTID: |
fc4b93fa | 552 | utype = LTTNG_UST_ABI_CONTEXT_VTID; |
9197c5c4 MD |
553 | break; |
554 | case LTTNG_EVENT_CONTEXT_VPID: | |
fc4b93fa | 555 | utype = LTTNG_UST_ABI_CONTEXT_VPID; |
9197c5c4 MD |
556 | break; |
557 | case LTTNG_EVENT_CONTEXT_PTHREAD_ID: | |
fc4b93fa | 558 | utype = LTTNG_UST_ABI_CONTEXT_PTHREAD_ID; |
9197c5c4 MD |
559 | break; |
560 | case LTTNG_EVENT_CONTEXT_PROCNAME: | |
fc4b93fa | 561 | utype = LTTNG_UST_ABI_CONTEXT_PROCNAME; |
9197c5c4 | 562 | break; |
7c612c2e | 563 | case LTTNG_EVENT_CONTEXT_IP: |
fc4b93fa | 564 | utype = LTTNG_UST_ABI_CONTEXT_IP; |
7c612c2e | 565 | break; |
aa3514e9 | 566 | case LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER: |
b623cb6a | 567 | if (!lttng_ust_ctl_has_perf_counters()) { |
354e561b MD |
568 | utype = -1; |
569 | WARN("Perf counters not implemented in UST"); | |
570 | } else { | |
fc4b93fa | 571 | utype = LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER; |
354e561b | 572 | } |
aa3514e9 | 573 | break; |
bdf64013 | 574 | case LTTNG_EVENT_CONTEXT_APP_CONTEXT: |
fc4b93fa | 575 | utype = LTTNG_UST_ABI_CONTEXT_APP_CONTEXT; |
bdf64013 | 576 | break; |
f17b8732 | 577 | case LTTNG_EVENT_CONTEXT_CGROUP_NS: |
fc4b93fa | 578 | utype = LTTNG_UST_ABI_CONTEXT_CGROUP_NS; |
f17b8732 MJ |
579 | break; |
580 | case LTTNG_EVENT_CONTEXT_IPC_NS: | |
fc4b93fa | 581 | utype = LTTNG_UST_ABI_CONTEXT_IPC_NS; |
f17b8732 MJ |
582 | break; |
583 | case LTTNG_EVENT_CONTEXT_MNT_NS: | |
fc4b93fa | 584 | utype = LTTNG_UST_ABI_CONTEXT_MNT_NS; |
f17b8732 MJ |
585 | break; |
586 | case LTTNG_EVENT_CONTEXT_NET_NS: | |
fc4b93fa | 587 | utype = LTTNG_UST_ABI_CONTEXT_NET_NS; |
f17b8732 MJ |
588 | break; |
589 | case LTTNG_EVENT_CONTEXT_PID_NS: | |
fc4b93fa | 590 | utype = LTTNG_UST_ABI_CONTEXT_PID_NS; |
f17b8732 | 591 | break; |
d37ac3cd | 592 | case LTTNG_EVENT_CONTEXT_TIME_NS: |
fc4b93fa | 593 | utype = LTTNG_UST_ABI_CONTEXT_TIME_NS; |
d37ac3cd | 594 | break; |
f17b8732 | 595 | case LTTNG_EVENT_CONTEXT_USER_NS: |
fc4b93fa | 596 | utype = LTTNG_UST_ABI_CONTEXT_USER_NS; |
f17b8732 MJ |
597 | break; |
598 | case LTTNG_EVENT_CONTEXT_UTS_NS: | |
fc4b93fa | 599 | utype = LTTNG_UST_ABI_CONTEXT_UTS_NS; |
f17b8732 | 600 | break; |
4fc59cb8 | 601 | case LTTNG_EVENT_CONTEXT_VUID: |
fc4b93fa | 602 | utype = LTTNG_UST_ABI_CONTEXT_VUID; |
4fc59cb8 MJ |
603 | break; |
604 | case LTTNG_EVENT_CONTEXT_VEUID: | |
fc4b93fa | 605 | utype = LTTNG_UST_ABI_CONTEXT_VEUID; |
4fc59cb8 MJ |
606 | break; |
607 | case LTTNG_EVENT_CONTEXT_VSUID: | |
fc4b93fa | 608 | utype = LTTNG_UST_ABI_CONTEXT_VSUID; |
4fc59cb8 MJ |
609 | break; |
610 | case LTTNG_EVENT_CONTEXT_VGID: | |
fc4b93fa | 611 | utype = LTTNG_UST_ABI_CONTEXT_VGID; |
4fc59cb8 MJ |
612 | break; |
613 | case LTTNG_EVENT_CONTEXT_VEGID: | |
fc4b93fa | 614 | utype = LTTNG_UST_ABI_CONTEXT_VEGID; |
4fc59cb8 MJ |
615 | break; |
616 | case LTTNG_EVENT_CONTEXT_VSGID: | |
fc4b93fa | 617 | utype = LTTNG_UST_ABI_CONTEXT_VSGID; |
4fc59cb8 | 618 | break; |
9197c5c4 | 619 | default: |
aa3514e9 MD |
620 | utype = -1; |
621 | break; | |
622 | } | |
623 | return utype; | |
624 | } | |
625 | ||
626 | /* | |
627 | * Return 1 if contexts match, 0 otherwise. | |
628 | */ | |
df4f5a87 JG |
629 | int trace_ust_match_context(const struct ltt_ust_context *uctx, |
630 | const struct lttng_event_context *ctx) | |
aa3514e9 MD |
631 | { |
632 | int utype; | |
633 | ||
634 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
635 | if (utype < 0) { | |
636 | return 0; | |
637 | } | |
638 | if (uctx->ctx.ctx != utype) { | |
639 | return 0; | |
640 | } | |
641 | switch (utype) { | |
fc4b93fa | 642 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
aa3514e9 MD |
643 | if (uctx->ctx.u.perf_counter.type |
644 | != ctx->u.perf_counter.type) { | |
645 | return 0; | |
646 | } | |
647 | if (uctx->ctx.u.perf_counter.config | |
648 | != ctx->u.perf_counter.config) { | |
649 | return 0; | |
650 | } | |
651 | if (strncmp(uctx->ctx.u.perf_counter.name, | |
652 | ctx->u.perf_counter.name, | |
fc4b93fa | 653 | LTTNG_UST_ABI_SYM_NAME_LEN)) { |
aa3514e9 MD |
654 | return 0; |
655 | } | |
656 | break; | |
fc4b93fa | 657 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
a0377dfe FD |
658 | LTTNG_ASSERT(uctx->ctx.u.app_ctx.provider_name); |
659 | LTTNG_ASSERT(uctx->ctx.u.app_ctx.ctx_name); | |
54fb33cf JG |
660 | if (strcmp(uctx->ctx.u.app_ctx.provider_name, |
661 | ctx->u.app_ctx.provider_name) || | |
662 | strcmp(uctx->ctx.u.app_ctx.ctx_name, | |
663 | ctx->u.app_ctx.ctx_name)) { | |
664 | return 0; | |
665 | } | |
aa3514e9 MD |
666 | default: |
667 | break; | |
668 | ||
669 | } | |
670 | return 1; | |
671 | } | |
672 | ||
673 | /* | |
674 | * Allocate and initialize an UST context. | |
675 | * | |
676 | * Return pointer to structure or NULL. | |
677 | */ | |
678 | struct ltt_ust_context *trace_ust_create_context( | |
df4f5a87 | 679 | const struct lttng_event_context *ctx) |
aa3514e9 | 680 | { |
bdf64013 | 681 | struct ltt_ust_context *uctx = NULL; |
aa3514e9 MD |
682 | int utype; |
683 | ||
a0377dfe | 684 | LTTNG_ASSERT(ctx); |
aa3514e9 MD |
685 | |
686 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
687 | if (utype < 0) { | |
1cf992b8 | 688 | ERR("Invalid UST context"); |
bdf64013 | 689 | goto end; |
9197c5c4 | 690 | } |
55cc08a6 | 691 | |
64803277 | 692 | uctx = zmalloc<ltt_ust_context>(); |
bdf64013 | 693 | if (!uctx) { |
55cc08a6 | 694 | PERROR("zmalloc ltt_ust_context"); |
bdf64013 | 695 | goto end; |
55cc08a6 DG |
696 | } |
697 | ||
fc4b93fa | 698 | uctx->ctx.ctx = (enum lttng_ust_abi_context_type) utype; |
aa3514e9 | 699 | switch (utype) { |
fc4b93fa | 700 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
aa3514e9 MD |
701 | uctx->ctx.u.perf_counter.type = ctx->u.perf_counter.type; |
702 | uctx->ctx.u.perf_counter.config = ctx->u.perf_counter.config; | |
703 | strncpy(uctx->ctx.u.perf_counter.name, ctx->u.perf_counter.name, | |
fc4b93fa MD |
704 | LTTNG_UST_ABI_SYM_NAME_LEN); |
705 | uctx->ctx.u.perf_counter.name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
aa3514e9 | 706 | break; |
fc4b93fa | 707 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
bdf64013 JG |
708 | { |
709 | char *provider_name = NULL, *ctx_name = NULL; | |
710 | ||
711 | provider_name = strdup(ctx->u.app_ctx.provider_name); | |
712 | if (!provider_name) { | |
713 | goto error; | |
714 | } | |
715 | uctx->ctx.u.app_ctx.provider_name = provider_name; | |
716 | ||
717 | ctx_name = strdup(ctx->u.app_ctx.ctx_name); | |
718 | if (!ctx_name) { | |
719 | goto error; | |
720 | } | |
721 | uctx->ctx.u.app_ctx.ctx_name = ctx_name; | |
722 | break; | |
723 | } | |
aa3514e9 MD |
724 | default: |
725 | break; | |
726 | } | |
bec39940 | 727 | lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx); |
bdf64013 | 728 | end: |
55cc08a6 | 729 | return uctx; |
55cc08a6 | 730 | error: |
bdf64013 | 731 | trace_ust_destroy_context(uctx); |
55cc08a6 DG |
732 | return NULL; |
733 | } | |
734 | ||
55c9e7ca | 735 | static void destroy_id_tracker_node_rcu(struct rcu_head *head) |
a9ad0c8f | 736 | { |
55c9e7ca JR |
737 | struct ust_id_tracker_node *tracker_node = caa_container_of( |
738 | head, struct ust_id_tracker_node, node.head); | |
a9ad0c8f MD |
739 | free(tracker_node); |
740 | } | |
741 | ||
55c9e7ca | 742 | static void destroy_id_tracker_node(struct ust_id_tracker_node *tracker_node) |
a9ad0c8f | 743 | { |
55c9e7ca | 744 | call_rcu(&tracker_node->node.head, destroy_id_tracker_node_rcu); |
a9ad0c8f MD |
745 | } |
746 | ||
55c9e7ca | 747 | static int init_id_tracker(struct ust_id_tracker *id_tracker) |
a9ad0c8f | 748 | { |
55c9e7ca | 749 | int ret = LTTNG_OK; |
a9ad0c8f | 750 | |
55c9e7ca JR |
751 | id_tracker->ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); |
752 | if (!id_tracker->ht) { | |
753 | ret = LTTNG_ERR_NOMEM; | |
a9ad0c8f MD |
754 | goto end; |
755 | } | |
756 | ||
757 | end: | |
758 | return ret; | |
759 | } | |
760 | ||
761 | /* | |
55c9e7ca | 762 | * Teardown id tracker content, but don't free id_tracker object. |
a9ad0c8f | 763 | */ |
55c9e7ca | 764 | static void fini_id_tracker(struct ust_id_tracker *id_tracker) |
a9ad0c8f | 765 | { |
55c9e7ca | 766 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
767 | struct lttng_ht_iter iter; |
768 | ||
55c9e7ca | 769 | if (!id_tracker->ht) { |
a9ad0c8f MD |
770 | return; |
771 | } | |
772 | rcu_read_lock(); | |
55c9e7ca JR |
773 | cds_lfht_for_each_entry (id_tracker->ht->ht, &iter.iter, tracker_node, |
774 | node.node) { | |
775 | int ret = lttng_ht_del(id_tracker->ht, &iter); | |
a9ad0c8f | 776 | |
a0377dfe | 777 | LTTNG_ASSERT(!ret); |
55c9e7ca | 778 | destroy_id_tracker_node(tracker_node); |
a9ad0c8f MD |
779 | } |
780 | rcu_read_unlock(); | |
3c339053 | 781 | lttng_ht_destroy(id_tracker->ht); |
55c9e7ca | 782 | id_tracker->ht = NULL; |
a9ad0c8f MD |
783 | } |
784 | ||
55c9e7ca JR |
785 | static struct ust_id_tracker_node *id_tracker_lookup( |
786 | struct ust_id_tracker *id_tracker, | |
787 | int id, | |
a9ad0c8f MD |
788 | struct lttng_ht_iter *iter) |
789 | { | |
55c9e7ca | 790 | unsigned long _id = (unsigned long) id; |
a9ad0c8f MD |
791 | struct lttng_ht_node_ulong *node; |
792 | ||
55c9e7ca | 793 | lttng_ht_lookup(id_tracker->ht, (void *) _id, iter); |
a9ad0c8f MD |
794 | node = lttng_ht_iter_get_node_ulong(iter); |
795 | if (node) { | |
0114db0e | 796 | return lttng::utils::container_of(node, &ust_id_tracker_node::node); |
a9ad0c8f MD |
797 | } else { |
798 | return NULL; | |
799 | } | |
800 | } | |
801 | ||
55c9e7ca | 802 | static int id_tracker_add_id(struct ust_id_tracker *id_tracker, int id) |
a9ad0c8f MD |
803 | { |
804 | int retval = LTTNG_OK; | |
55c9e7ca | 805 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
806 | struct lttng_ht_iter iter; |
807 | ||
55c9e7ca | 808 | if (id < 0) { |
a9ad0c8f MD |
809 | retval = LTTNG_ERR_INVALID; |
810 | goto end; | |
811 | } | |
55c9e7ca | 812 | tracker_node = id_tracker_lookup(id_tracker, id, &iter); |
a9ad0c8f MD |
813 | if (tracker_node) { |
814 | /* Already exists. */ | |
159b042f | 815 | retval = LTTNG_ERR_PROCESS_ATTR_EXISTS; |
a9ad0c8f MD |
816 | goto end; |
817 | } | |
64803277 | 818 | tracker_node = zmalloc<ust_id_tracker_node>(); |
a9ad0c8f MD |
819 | if (!tracker_node) { |
820 | retval = LTTNG_ERR_NOMEM; | |
821 | goto end; | |
822 | } | |
55c9e7ca JR |
823 | lttng_ht_node_init_ulong(&tracker_node->node, (unsigned long) id); |
824 | lttng_ht_add_unique_ulong(id_tracker->ht, &tracker_node->node); | |
a9ad0c8f MD |
825 | end: |
826 | return retval; | |
827 | } | |
828 | ||
55c9e7ca | 829 | static int id_tracker_del_id(struct ust_id_tracker *id_tracker, int id) |
a9ad0c8f MD |
830 | { |
831 | int retval = LTTNG_OK, ret; | |
55c9e7ca | 832 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
833 | struct lttng_ht_iter iter; |
834 | ||
55c9e7ca | 835 | if (id < 0) { |
a9ad0c8f MD |
836 | retval = LTTNG_ERR_INVALID; |
837 | goto end; | |
838 | } | |
55c9e7ca | 839 | tracker_node = id_tracker_lookup(id_tracker, id, &iter); |
a9ad0c8f MD |
840 | if (!tracker_node) { |
841 | /* Not found */ | |
159b042f | 842 | retval = LTTNG_ERR_PROCESS_ATTR_MISSING; |
a9ad0c8f MD |
843 | goto end; |
844 | } | |
55c9e7ca | 845 | ret = lttng_ht_del(id_tracker->ht, &iter); |
a0377dfe | 846 | LTTNG_ASSERT(!ret); |
a9ad0c8f | 847 | |
55c9e7ca | 848 | destroy_id_tracker_node(tracker_node); |
a9ad0c8f MD |
849 | end: |
850 | return retval; | |
851 | } | |
852 | ||
55c9e7ca | 853 | static struct ust_id_tracker *get_id_tracker(struct ltt_ust_session *session, |
159b042f | 854 | enum lttng_process_attr process_attr) |
55c9e7ca | 855 | { |
159b042f JG |
856 | switch (process_attr) { |
857 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
55c9e7ca | 858 | return &session->vpid_tracker; |
159b042f | 859 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
55c9e7ca | 860 | return &session->vuid_tracker; |
159b042f | 861 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
55c9e7ca JR |
862 | return &session->vgid_tracker; |
863 | default: | |
864 | return NULL; | |
865 | } | |
866 | } | |
867 | ||
159b042f | 868 | static struct process_attr_tracker *_trace_ust_get_process_attr_tracker( |
55c9e7ca | 869 | struct ltt_ust_session *session, |
159b042f | 870 | enum lttng_process_attr process_attr) |
55c9e7ca | 871 | { |
159b042f JG |
872 | switch (process_attr) { |
873 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
874 | return session->tracker_vpid; | |
875 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
876 | return session->tracker_vuid; | |
877 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
878 | return session->tracker_vgid; | |
55c9e7ca JR |
879 | default: |
880 | return NULL; | |
881 | } | |
882 | } | |
883 | ||
159b042f JG |
884 | const struct process_attr_tracker *trace_ust_get_process_attr_tracker( |
885 | struct ltt_ust_session *session, | |
886 | enum lttng_process_attr process_attr) | |
887 | { | |
888 | return (const struct process_attr_tracker *) | |
889 | _trace_ust_get_process_attr_tracker( | |
890 | session, process_attr); | |
891 | } | |
892 | ||
a9ad0c8f MD |
893 | /* |
894 | * The session lock is held when calling this function. | |
895 | */ | |
159b042f | 896 | int trace_ust_id_tracker_lookup(enum lttng_process_attr process_attr, |
55c9e7ca JR |
897 | struct ltt_ust_session *session, |
898 | int id) | |
a9ad0c8f MD |
899 | { |
900 | struct lttng_ht_iter iter; | |
55c9e7ca | 901 | struct ust_id_tracker *id_tracker; |
a9ad0c8f | 902 | |
159b042f | 903 | id_tracker = get_id_tracker(session, process_attr); |
55c9e7ca JR |
904 | if (!id_tracker) { |
905 | abort(); | |
906 | } | |
907 | if (!id_tracker->ht) { | |
a9ad0c8f MD |
908 | return 1; |
909 | } | |
55c9e7ca | 910 | if (id_tracker_lookup(id_tracker, id, &iter)) { |
a9ad0c8f MD |
911 | return 1; |
912 | } | |
913 | return 0; | |
914 | } | |
915 | ||
916 | /* | |
917 | * Called with the session lock held. | |
918 | */ | |
159b042f | 919 | enum lttng_error_code trace_ust_process_attr_tracker_set_tracking_policy( |
55c9e7ca | 920 | struct ltt_ust_session *session, |
159b042f JG |
921 | enum lttng_process_attr process_attr, |
922 | enum lttng_tracking_policy policy) | |
a9ad0c8f | 923 | { |
159b042f JG |
924 | int ret; |
925 | enum lttng_error_code ret_code = LTTNG_OK; | |
926 | struct ust_id_tracker *id_tracker = | |
927 | get_id_tracker(session, process_attr); | |
928 | struct process_attr_tracker *tracker = | |
929 | _trace_ust_get_process_attr_tracker( | |
930 | session, process_attr); | |
88e3c2f5 | 931 | bool should_update_apps = false; |
159b042f | 932 | enum lttng_tracking_policy previous_policy; |
55c9e7ca | 933 | |
159b042f JG |
934 | if (!tracker) { |
935 | ret_code = LTTNG_ERR_INVALID; | |
936 | goto end; | |
55c9e7ca | 937 | } |
a9ad0c8f | 938 | |
159b042f JG |
939 | previous_policy = process_attr_tracker_get_tracking_policy(tracker); |
940 | ret = process_attr_tracker_set_tracking_policy(tracker, policy); | |
941 | if (ret) { | |
942 | ret_code = LTTNG_ERR_UNK; | |
55c9e7ca JR |
943 | goto end; |
944 | } | |
945 | ||
159b042f JG |
946 | if (previous_policy == policy) { |
947 | goto end; | |
55c9e7ca | 948 | } |
159b042f JG |
949 | |
950 | switch (policy) { | |
951 | case LTTNG_TRACKING_POLICY_INCLUDE_ALL: | |
952 | /* Track all values: destroy tracker if exists. */ | |
55c9e7ca JR |
953 | if (id_tracker->ht) { |
954 | fini_id_tracker(id_tracker); | |
a9ad0c8f | 955 | /* Ensure all apps have session. */ |
88e3c2f5 | 956 | should_update_apps = true; |
a9ad0c8f | 957 | } |
159b042f JG |
958 | break; |
959 | case LTTNG_TRACKING_POLICY_EXCLUDE_ALL: | |
960 | case LTTNG_TRACKING_POLICY_INCLUDE_SET: | |
961 | /* fall-through. */ | |
962 | fini_id_tracker(id_tracker); | |
7966af57 | 963 | ret_code = (lttng_error_code) init_id_tracker(id_tracker); |
159b042f JG |
964 | if (ret_code != LTTNG_OK) { |
965 | ERR("Error initializing ID tracker"); | |
966 | goto end; | |
a9ad0c8f | 967 | } |
159b042f JG |
968 | /* Remove all apps from session. */ |
969 | should_update_apps = true; | |
970 | break; | |
971 | default: | |
972 | abort(); | |
a9ad0c8f | 973 | } |
88e3c2f5 JG |
974 | if (should_update_apps && session->active) { |
975 | ust_app_global_update_all(session); | |
976 | } | |
a9ad0c8f | 977 | end: |
159b042f | 978 | return ret_code; |
a9ad0c8f MD |
979 | } |
980 | ||
159b042f JG |
981 | /* Called with the session lock held. */ |
982 | enum lttng_error_code trace_ust_process_attr_tracker_inclusion_set_add_value( | |
55c9e7ca | 983 | struct ltt_ust_session *session, |
159b042f JG |
984 | enum lttng_process_attr process_attr, |
985 | const struct process_attr_value *value) | |
a9ad0c8f | 986 | { |
159b042f | 987 | enum lttng_error_code ret_code = LTTNG_OK; |
a5a30920 | 988 | bool should_update_apps = false; |
159b042f JG |
989 | struct ust_id_tracker *id_tracker = |
990 | get_id_tracker(session, process_attr); | |
991 | struct process_attr_tracker *tracker; | |
992 | int integral_value; | |
993 | enum process_attr_tracker_status status; | |
994 | struct ust_app *app; | |
55c9e7ca | 995 | |
159b042f JG |
996 | /* |
997 | * Convert process attribute tracker value to the integral | |
998 | * representation required by the kern-ctl API. | |
999 | */ | |
1000 | switch (process_attr) { | |
1001 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
1002 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1003 | integral_value = (int) value->value.pid; | |
1004 | break; | |
1005 | case LTTNG_PROCESS_ATTR_USER_ID: | |
1006 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
1007 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME) { | |
1008 | uid_t uid; | |
1009 | ||
1010 | ret_code = utils_user_id_from_name( | |
1011 | value->value.user_name, &uid); | |
1012 | if (ret_code != LTTNG_OK) { | |
1013 | goto end; | |
1014 | } | |
1015 | integral_value = (int) uid; | |
1016 | } else { | |
1017 | integral_value = (int) value->value.uid; | |
1018 | } | |
1019 | break; | |
1020 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
1021 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
1022 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME) { | |
1023 | gid_t gid; | |
1024 | ||
1025 | ret_code = utils_group_id_from_name( | |
1026 | value->value.group_name, &gid); | |
1027 | if (ret_code != LTTNG_OK) { | |
1028 | goto end; | |
1029 | } | |
1030 | integral_value = (int) gid; | |
1031 | } else { | |
1032 | integral_value = (int) value->value.gid; | |
1033 | } | |
1034 | break; | |
1035 | default: | |
1036 | ret_code = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
1037 | goto end; |
1038 | } | |
a9ad0c8f | 1039 | |
159b042f JG |
1040 | tracker = _trace_ust_get_process_attr_tracker(session, process_attr); |
1041 | if (!tracker) { | |
1042 | ret_code = LTTNG_ERR_INVALID; | |
74675e31 | 1043 | goto end; |
55c9e7ca JR |
1044 | } |
1045 | ||
159b042f JG |
1046 | status = process_attr_tracker_inclusion_set_add_value(tracker, value); |
1047 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { | |
1048 | switch (status) { | |
1049 | case PROCESS_ATTR_TRACKER_STATUS_EXISTS: | |
1050 | ret_code = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
1051 | break; | |
1052 | case PROCESS_ATTR_TRACKER_STATUS_INVALID_TRACKING_POLICY: | |
1053 | ret_code = LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY; | |
1054 | break; | |
1055 | case PROCESS_ATTR_TRACKER_STATUS_ERROR: | |
1056 | default: | |
1057 | ret_code = LTTNG_ERR_UNK; | |
1058 | break; | |
a9ad0c8f | 1059 | } |
159b042f JG |
1060 | goto end; |
1061 | } | |
a9ad0c8f | 1062 | |
159b042f JG |
1063 | DBG("User space track %s %d for session id %" PRIu64, |
1064 | lttng_process_attr_to_string(process_attr), | |
1065 | integral_value, session->id); | |
a9ad0c8f | 1066 | |
7966af57 | 1067 | ret_code = (lttng_error_code) id_tracker_add_id(id_tracker, integral_value); |
159b042f JG |
1068 | if (ret_code != LTTNG_OK) { |
1069 | goto end; | |
1070 | } | |
1071 | /* Add session to application */ | |
1072 | switch (process_attr) { | |
1073 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1074 | app = ust_app_find_by_pid(integral_value); | |
1075 | if (app) { | |
a5a30920 | 1076 | should_update_apps = true; |
a9ad0c8f | 1077 | } |
159b042f JG |
1078 | break; |
1079 | default: | |
1080 | should_update_apps = true; | |
1081 | break; | |
a9ad0c8f | 1082 | } |
a5a30920 JR |
1083 | if (should_update_apps && session->active) { |
1084 | ust_app_global_update_all(session); | |
1085 | } | |
a9ad0c8f | 1086 | end: |
159b042f | 1087 | return ret_code; |
a9ad0c8f MD |
1088 | } |
1089 | ||
159b042f JG |
1090 | /* Called with the session lock held. */ |
1091 | enum lttng_error_code trace_ust_process_attr_tracker_inclusion_set_remove_value( | |
55c9e7ca | 1092 | struct ltt_ust_session *session, |
159b042f JG |
1093 | enum lttng_process_attr process_attr, |
1094 | const struct process_attr_value *value) | |
a5dfbb9d | 1095 | { |
159b042f JG |
1096 | enum lttng_error_code ret_code = LTTNG_OK; |
1097 | bool should_update_apps = false; | |
1098 | struct ust_id_tracker *id_tracker = | |
1099 | get_id_tracker(session, process_attr); | |
1100 | struct process_attr_tracker *tracker; | |
1101 | int integral_value; | |
1102 | enum process_attr_tracker_status status; | |
1103 | struct ust_app *app; | |
a5dfbb9d | 1104 | |
159b042f JG |
1105 | /* |
1106 | * Convert process attribute tracker value to the integral | |
1107 | * representation required by the kern-ctl API. | |
1108 | */ | |
1109 | switch (process_attr) { | |
1110 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
1111 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1112 | integral_value = (int) value->value.pid; | |
1113 | break; | |
1114 | case LTTNG_PROCESS_ATTR_USER_ID: | |
1115 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
1116 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME) { | |
1117 | uid_t uid; | |
1118 | ||
1119 | ret_code = utils_user_id_from_name( | |
1120 | value->value.user_name, &uid); | |
1121 | if (ret_code != LTTNG_OK) { | |
1122 | goto end; | |
1123 | } | |
1124 | integral_value = (int) uid; | |
1125 | } else { | |
1126 | integral_value = (int) value->value.uid; | |
1127 | } | |
1128 | break; | |
1129 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
1130 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
1131 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME) { | |
1132 | gid_t gid; | |
1133 | ||
1134 | ret_code = utils_group_id_from_name( | |
1135 | value->value.group_name, &gid); | |
1136 | if (ret_code != LTTNG_OK) { | |
1137 | goto end; | |
1138 | } | |
1139 | integral_value = (int) gid; | |
1140 | } else { | |
1141 | integral_value = (int) value->value.gid; | |
1142 | } | |
1143 | break; | |
1144 | default: | |
1145 | ret_code = LTTNG_ERR_INVALID; | |
1146 | goto end; | |
a5dfbb9d MD |
1147 | } |
1148 | ||
159b042f JG |
1149 | tracker = _trace_ust_get_process_attr_tracker(session, process_attr); |
1150 | if (!tracker) { | |
1151 | ret_code = LTTNG_ERR_INVALID; | |
74675e31 | 1152 | goto end; |
159b042f JG |
1153 | } |
1154 | ||
1155 | status = process_attr_tracker_inclusion_set_remove_value( | |
1156 | tracker, value); | |
1157 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { | |
1158 | switch (status) { | |
1159 | case PROCESS_ATTR_TRACKER_STATUS_MISSING: | |
1160 | ret_code = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
1161 | break; | |
1162 | case PROCESS_ATTR_TRACKER_STATUS_INVALID_TRACKING_POLICY: | |
1163 | ret_code = LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY; | |
1164 | break; | |
1165 | case PROCESS_ATTR_TRACKER_STATUS_ERROR: | |
1166 | default: | |
1167 | ret_code = LTTNG_ERR_UNK; | |
1168 | break; | |
1169 | } | |
a7a533cd | 1170 | goto end; |
a5dfbb9d | 1171 | } |
a7a533cd | 1172 | |
159b042f JG |
1173 | DBG("User space untrack %s %d for session id %" PRIu64, |
1174 | lttng_process_attr_to_string(process_attr), | |
1175 | integral_value, session->id); | |
1176 | ||
7966af57 | 1177 | ret_code = (lttng_error_code) id_tracker_del_id(id_tracker, integral_value); |
159b042f | 1178 | if (ret_code != LTTNG_OK) { |
a7a533cd JR |
1179 | goto end; |
1180 | } | |
159b042f JG |
1181 | /* Add session to application */ |
1182 | switch (process_attr) { | |
1183 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1184 | app = ust_app_find_by_pid(integral_value); | |
1185 | if (app) { | |
1186 | should_update_apps = true; | |
1187 | } | |
1188 | break; | |
1189 | default: | |
1190 | should_update_apps = true; | |
1191 | break; | |
1192 | } | |
1193 | if (should_update_apps && session->active) { | |
1194 | ust_app_global_update_all(session); | |
1195 | } | |
a7a533cd | 1196 | end: |
159b042f | 1197 | return ret_code; |
a5dfbb9d MD |
1198 | } |
1199 | ||
f6a9efaa DG |
1200 | /* |
1201 | * RCU safe free context structure. | |
1202 | */ | |
1203 | static void destroy_context_rcu(struct rcu_head *head) | |
1204 | { | |
bec39940 | 1205 | struct lttng_ht_node_ulong *node = |
0114db0e | 1206 | lttng::utils::container_of(head, <tng_ht_node_ulong::head); |
f6a9efaa | 1207 | struct ltt_ust_context *ctx = |
0114db0e | 1208 | lttng::utils::container_of(node, <t_ust_context::node); |
f6a9efaa | 1209 | |
bdf64013 | 1210 | trace_ust_destroy_context(ctx); |
f6a9efaa DG |
1211 | } |
1212 | ||
1213 | /* | |
1214 | * Cleanup UST context hash table. | |
1215 | */ | |
7bd39047 | 1216 | static void destroy_contexts(struct lttng_ht *ht) |
f6a9efaa DG |
1217 | { |
1218 | int ret; | |
bec39940 DG |
1219 | struct lttng_ht_node_ulong *node; |
1220 | struct lttng_ht_iter iter; | |
31746f93 | 1221 | struct ltt_ust_context *ctx; |
f6a9efaa | 1222 | |
a0377dfe | 1223 | LTTNG_ASSERT(ht); |
0525e9ae | 1224 | |
36b588ed | 1225 | rcu_read_lock(); |
bec39940 | 1226 | cds_lfht_for_each_entry(ht->ht, &iter.iter, node, node) { |
31746f93 | 1227 | /* Remove from ordered list. */ |
0114db0e | 1228 | ctx = lttng::utils::container_of(node, <t_ust_context::node); |
31746f93 DG |
1229 | cds_list_del(&ctx->list); |
1230 | /* Remove from channel's hash table. */ | |
bec39940 | 1231 | ret = lttng_ht_del(ht, &iter); |
f6a9efaa DG |
1232 | if (!ret) { |
1233 | call_rcu(&node->head, destroy_context_rcu); | |
1234 | } | |
f6a9efaa | 1235 | } |
36b588ed | 1236 | rcu_read_unlock(); |
ed52805d | 1237 | |
3c339053 | 1238 | lttng_ht_destroy(ht); |
f6a9efaa DG |
1239 | } |
1240 | ||
97ee3a89 DG |
1241 | /* |
1242 | * Cleanup ust event structure. | |
1243 | */ | |
1244 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
1245 | { | |
a0377dfe | 1246 | LTTNG_ASSERT(event); |
0525e9ae | 1247 | |
f6a9efaa | 1248 | DBG2("Trace destroy UST event %s", event->attr.name); |
6b453b5e | 1249 | free(event->filter_expression); |
53a80697 | 1250 | free(event->filter); |
40024f8a | 1251 | free(event->exclusion); |
97ee3a89 DG |
1252 | free(event); |
1253 | } | |
1254 | ||
bdf64013 JG |
1255 | /* |
1256 | * Cleanup ust context structure. | |
1257 | */ | |
1258 | void trace_ust_destroy_context(struct ltt_ust_context *ctx) | |
1259 | { | |
a0377dfe | 1260 | LTTNG_ASSERT(ctx); |
bdf64013 | 1261 | |
fc4b93fa | 1262 | if (ctx->ctx.ctx == LTTNG_UST_ABI_CONTEXT_APP_CONTEXT) { |
bdf64013 JG |
1263 | free(ctx->ctx.u.app_ctx.provider_name); |
1264 | free(ctx->ctx.u.app_ctx.ctx_name); | |
1265 | } | |
1266 | free(ctx); | |
1267 | } | |
1268 | ||
f6a9efaa DG |
1269 | /* |
1270 | * URCU intermediate call to complete destroy event. | |
1271 | */ | |
1272 | static void destroy_event_rcu(struct rcu_head *head) | |
1273 | { | |
bec39940 | 1274 | struct lttng_ht_node_str *node = |
0114db0e | 1275 | lttng::utils::container_of(head, <tng_ht_node_str::head); |
f6a9efaa | 1276 | struct ltt_ust_event *event = |
0114db0e | 1277 | lttng::utils::container_of(node, <t_ust_event::node); |
f6a9efaa DG |
1278 | |
1279 | trace_ust_destroy_event(event); | |
1280 | } | |
1281 | ||
284d8f55 DG |
1282 | /* |
1283 | * Cleanup UST events hashtable. | |
1284 | */ | |
7bd39047 | 1285 | static void destroy_events(struct lttng_ht *events) |
ed52805d DG |
1286 | { |
1287 | int ret; | |
bec39940 DG |
1288 | struct lttng_ht_node_str *node; |
1289 | struct lttng_ht_iter iter; | |
ed52805d | 1290 | |
a0377dfe | 1291 | LTTNG_ASSERT(events); |
0525e9ae | 1292 | |
36b588ed | 1293 | rcu_read_lock(); |
bec39940 DG |
1294 | cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) { |
1295 | ret = lttng_ht_del(events, &iter); | |
a0377dfe | 1296 | LTTNG_ASSERT(!ret); |
7bd39047 | 1297 | call_rcu(&node->head, destroy_event_rcu); |
ed52805d | 1298 | } |
36b588ed | 1299 | rcu_read_unlock(); |
ed52805d | 1300 | |
3c339053 | 1301 | lttng_ht_destroy(events); |
ed52805d DG |
1302 | } |
1303 | ||
97ee3a89 DG |
1304 | /* |
1305 | * Cleanup ust channel structure. | |
36b588ed MD |
1306 | * |
1307 | * Should _NOT_ be called with RCU read lock held. | |
97ee3a89 | 1308 | */ |
36b588ed | 1309 | static void _trace_ust_destroy_channel(struct ltt_ust_channel *channel) |
97ee3a89 | 1310 | { |
a0377dfe | 1311 | LTTNG_ASSERT(channel); |
0525e9ae | 1312 | |
f6a9efaa | 1313 | DBG2("Trace destroy UST channel %s", channel->name); |
97ee3a89 | 1314 | |
97ee3a89 | 1315 | free(channel); |
f6a9efaa DG |
1316 | } |
1317 | ||
1318 | /* | |
1319 | * URCU intermediate call to complete destroy channel. | |
1320 | */ | |
1321 | static void destroy_channel_rcu(struct rcu_head *head) | |
1322 | { | |
bec39940 | 1323 | struct lttng_ht_node_str *node = |
0114db0e | 1324 | lttng::utils::container_of(head, <tng_ht_node_str::head); |
f6a9efaa | 1325 | struct ltt_ust_channel *channel = |
0114db0e | 1326 | lttng::utils::container_of(node, <t_ust_channel::node); |
f6a9efaa | 1327 | |
36b588ed MD |
1328 | _trace_ust_destroy_channel(channel); |
1329 | } | |
1330 | ||
1331 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
1332 | { | |
627cbbe7 MD |
1333 | /* Destroying all events of the channel */ |
1334 | destroy_events(channel->events); | |
1335 | /* Destroying all context of the channel */ | |
1336 | destroy_contexts(channel->ctx); | |
1337 | ||
36b588ed | 1338 | call_rcu(&channel->node.head, destroy_channel_rcu); |
97ee3a89 DG |
1339 | } |
1340 | ||
d5979e4a DG |
1341 | /* |
1342 | * Remove an UST channel from a channel HT. | |
1343 | */ | |
1344 | void trace_ust_delete_channel(struct lttng_ht *ht, | |
1345 | struct ltt_ust_channel *channel) | |
1346 | { | |
1347 | int ret; | |
1348 | struct lttng_ht_iter iter; | |
1349 | ||
a0377dfe FD |
1350 | LTTNG_ASSERT(ht); |
1351 | LTTNG_ASSERT(channel); | |
d5979e4a DG |
1352 | |
1353 | iter.iter.node = &channel->node.node; | |
1354 | ret = lttng_ht_del(ht, &iter); | |
a0377dfe | 1355 | LTTNG_ASSERT(!ret); |
d5979e4a DG |
1356 | } |
1357 | ||
d7bfb9b0 JG |
1358 | int trace_ust_regenerate_metadata(struct ltt_ust_session *usess) |
1359 | { | |
1360 | int ret = 0; | |
1361 | struct buffer_reg_uid *uid_reg = NULL; | |
1362 | struct buffer_reg_session *session_reg = NULL; | |
1363 | ||
1364 | rcu_read_lock(); | |
1365 | cds_list_for_each_entry(uid_reg, &usess->buffer_reg_uid_list, lnode) { | |
b0f2e8db | 1366 | lsu::registry_session *registry; |
d7bfb9b0 JG |
1367 | |
1368 | session_reg = uid_reg->registry; | |
1369 | registry = session_reg->reg.ust; | |
1370 | ||
1371 | try { | |
1372 | registry->regenerate_metadata(); | |
1373 | } catch (const std::exception& ex) { | |
1374 | ERR("Failed to regenerate user space session metadata: %s", ex.what()); | |
1375 | ret = -1; | |
1376 | goto end; | |
1377 | } | |
1378 | } | |
1379 | ||
1380 | end: | |
1381 | rcu_read_unlock(); | |
1382 | return ret; | |
1383 | } | |
1384 | ||
97ee3a89 | 1385 | /* |
f6a9efaa | 1386 | * Iterate over a hash table containing channels and cleanup safely. |
97ee3a89 | 1387 | */ |
bec39940 | 1388 | static void destroy_channels(struct lttng_ht *channels) |
f6a9efaa | 1389 | { |
bec39940 DG |
1390 | struct lttng_ht_node_str *node; |
1391 | struct lttng_ht_iter iter; | |
f6a9efaa | 1392 | |
a0377dfe | 1393 | LTTNG_ASSERT(channels); |
0525e9ae | 1394 | |
24d1723f | 1395 | rcu_read_lock(); |
bec39940 | 1396 | cds_lfht_for_each_entry(channels->ht, &iter.iter, node, node) { |
627cbbe7 | 1397 | struct ltt_ust_channel *chan = |
0114db0e | 1398 | lttng::utils::container_of(node, <t_ust_channel::node); |
627cbbe7 MD |
1399 | |
1400 | trace_ust_delete_channel(channels, chan); | |
1401 | trace_ust_destroy_channel(chan); | |
f6a9efaa | 1402 | } |
36b588ed | 1403 | rcu_read_unlock(); |
ed52805d | 1404 | |
3c339053 | 1405 | lttng_ht_destroy(channels); |
f6a9efaa DG |
1406 | } |
1407 | ||
f6a9efaa DG |
1408 | /* |
1409 | * Cleanup UST global domain. | |
1410 | */ | |
1411 | static void destroy_domain_global(struct ltt_ust_domain_global *dom) | |
1412 | { | |
a0377dfe | 1413 | LTTNG_ASSERT(dom); |
0525e9ae | 1414 | |
f6a9efaa DG |
1415 | destroy_channels(dom->channels); |
1416 | } | |
97ee3a89 | 1417 | |
f6a9efaa | 1418 | /* |
d070c424 MD |
1419 | * Cleanup ust session structure, keeping data required by |
1420 | * destroy notifier. | |
f6a9efaa DG |
1421 | */ |
1422 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
1423 | { | |
fefd409b | 1424 | struct agent *agt; |
7972aab2 | 1425 | struct buffer_reg_uid *reg, *sreg; |
fefd409b | 1426 | struct lttng_ht_iter iter; |
7972aab2 | 1427 | |
a0377dfe | 1428 | LTTNG_ASSERT(session); |
97ee3a89 | 1429 | |
d9bf3ca4 | 1430 | DBG2("Trace UST destroy session %" PRIu64, session->id); |
f6a9efaa | 1431 | |
f6a9efaa DG |
1432 | /* Cleaning up UST domain */ |
1433 | destroy_domain_global(&session->domain_global); | |
fefd409b | 1434 | |
0c0fcd77 | 1435 | rcu_read_lock(); |
fefd409b | 1436 | cds_lfht_for_each_entry(session->agents->ht, &iter.iter, agt, node.node) { |
d0edf546 JG |
1437 | int ret = lttng_ht_del(session->agents, &iter); |
1438 | ||
a0377dfe | 1439 | LTTNG_ASSERT(!ret); |
fefd409b DG |
1440 | agent_destroy(agt); |
1441 | } | |
0c0fcd77 | 1442 | rcu_read_unlock(); |
7972aab2 | 1443 | |
3c339053 | 1444 | lttng_ht_destroy(session->agents); |
8ada2175 | 1445 | |
7972aab2 DG |
1446 | /* Cleanup UID buffer registry object(s). */ |
1447 | cds_list_for_each_entry_safe(reg, sreg, &session->buffer_reg_uid_list, | |
1448 | lnode) { | |
1449 | cds_list_del(®->lnode); | |
1450 | buffer_reg_uid_remove(reg); | |
1451 | buffer_reg_uid_destroy(reg, session->consumer); | |
1452 | } | |
44d3bd01 | 1453 | |
159b042f JG |
1454 | process_attr_tracker_destroy(session->tracker_vpid); |
1455 | process_attr_tracker_destroy(session->tracker_vuid); | |
1456 | process_attr_tracker_destroy(session->tracker_vgid); | |
55c9e7ca JR |
1457 | |
1458 | fini_id_tracker(&session->vpid_tracker); | |
1459 | fini_id_tracker(&session->vuid_tracker); | |
1460 | fini_id_tracker(&session->vgid_tracker); | |
82b69413 | 1461 | lttng_trace_chunk_put(session->current_trace_chunk); |
d070c424 MD |
1462 | } |
1463 | ||
1464 | /* Free elements needed by destroy notifiers. */ | |
1465 | void trace_ust_free_session(struct ltt_ust_session *session) | |
1466 | { | |
1467 | consumer_output_put(session->consumer); | |
97ee3a89 DG |
1468 | free(session); |
1469 | } |