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 |
28ab034a JG |
10 | #include "agent.hpp" |
11 | #include "buffer-registry.hpp" | |
12 | #include "trace-ust.hpp" | |
13 | #include "ust-app.hpp" | |
14 | #include "utils.hpp" | |
97ee3a89 | 15 | |
c9e313bc SM |
16 | #include <common/common.hpp> |
17 | #include <common/defaults.hpp> | |
18 | #include <common/trace-chunk.hpp> | |
56047f5a | 19 | #include <common/urcu.hpp> |
c9e313bc | 20 | #include <common/utils.hpp> |
97ee3a89 | 21 | |
28ab034a JG |
22 | #include <inttypes.h> |
23 | #include <stdio.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | #include <unistd.h> | |
97ee3a89 | 27 | |
b0f2e8db JG |
28 | namespace lsu = lttng::sessiond::ust; |
29 | ||
025faf73 DG |
30 | /* |
31 | * Match function for the events hash table lookup. | |
32 | * | |
33 | * Matches by name only. Used by the disable command. | |
34 | */ | |
28ab034a | 35 | int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node, const void *_key) |
18eace3b DG |
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 | 86 | ll_match = loglevels_match(event->attr.loglevel_type, |
28ab034a JG |
87 | ev_loglevel_value, |
88 | key->loglevel_type, | |
89 | key->loglevel_value, | |
90 | LTTNG_UST_ABI_LOGLEVEL_ALL); | |
19a97244 PP |
91 | |
92 | if (!ll_match) { | |
b953b8cd | 93 | goto no_match; |
18eace3b DG |
94 | } |
95 | ||
96 | /* Only one of the filters is NULL, fail. */ | |
97 | if ((key->filter && !event->filter) || (!key->filter && event->filter)) { | |
18eace3b DG |
98 | goto no_match; |
99 | } | |
100 | ||
025faf73 DG |
101 | if (key->filter && event->filter) { |
102 | /* Both filters exists, check length followed by the bytecode. */ | |
103 | if (event->filter->len != key->filter->len || | |
28ab034a | 104 | memcmp(event->filter->data, key->filter->data, event->filter->len) != 0) { |
025faf73 DG |
105 | goto no_match; |
106 | } | |
18eace3b DG |
107 | } |
108 | ||
f19e9f8b JI |
109 | /* If only one of the exclusions is NULL, fail. */ |
110 | if ((key->exclusion && !event->exclusion) || (!key->exclusion && event->exclusion)) { | |
111 | goto no_match; | |
112 | } | |
113 | ||
114 | if (key->exclusion && event->exclusion) { | |
a5b7e00c PP |
115 | size_t i; |
116 | ||
117 | /* Check exclusion counts first. */ | |
118 | if (event->exclusion->count != key->exclusion->count) { | |
f19e9f8b JI |
119 | goto no_match; |
120 | } | |
a5b7e00c PP |
121 | |
122 | /* Compare names individually. */ | |
123 | for (i = 0; i < event->exclusion->count; ++i) { | |
124 | size_t j; | |
28ab034a JG |
125 | bool found = false; |
126 | const char *name_ev = LTTNG_EVENT_EXCLUSION_NAME_AT(event->exclusion, i); | |
a5b7e00c PP |
127 | |
128 | /* | |
129 | * Compare this exclusion name to all the key's | |
130 | * exclusion names. | |
131 | */ | |
132 | for (j = 0; j < key->exclusion->count; ++j) { | |
133 | const char *name_key = | |
28ab034a | 134 | LTTNG_EVENT_EXCLUSION_NAME_AT(key->exclusion, j); |
a5b7e00c | 135 | |
28ab034a | 136 | if (!strncmp(name_ev, name_key, LTTNG_SYMBOL_NAME_LEN)) { |
a5b7e00c PP |
137 | /* Names match! */ |
138 | found = true; | |
139 | break; | |
140 | } | |
141 | } | |
142 | ||
143 | /* | |
144 | * If the current exclusion name was not found amongst | |
145 | * the key's exclusion names, then there's no match. | |
146 | */ | |
147 | if (!found) { | |
148 | goto no_match; | |
149 | } | |
150 | } | |
f19e9f8b | 151 | } |
025faf73 DG |
152 | /* Match. */ |
153 | return 1; | |
18eace3b DG |
154 | |
155 | no_match: | |
156 | return 0; | |
18eace3b DG |
157 | } |
158 | ||
0177d773 | 159 | /* |
2223c96f DG |
160 | * Find the channel in the hashtable and return channel pointer. RCU read side |
161 | * lock MUST be acquired before calling this. | |
0177d773 | 162 | */ |
28ab034a | 163 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, const char *name) |
0177d773 | 164 | { |
bec39940 DG |
165 | struct lttng_ht_node_str *node; |
166 | struct lttng_ht_iter iter; | |
0177d773 | 167 | |
48b7cdc2 | 168 | ASSERT_RCU_READ_LOCKED(); |
85076754 MD |
169 | /* |
170 | * If we receive an empty string for channel name, it means the | |
171 | * default channel name is requested. | |
172 | */ | |
173 | if (name[0] == '\0') | |
174 | name = DEFAULT_CHANNEL_NAME; | |
175 | ||
28ab034a | 176 | lttng_ht_lookup(ht, (void *) name, &iter); |
00d7d903 | 177 | node = lttng_ht_iter_get_node<lttng_ht_node_str>(&iter); |
cd9adb8b | 178 | if (node == nullptr) { |
44d3bd01 DG |
179 | goto error; |
180 | } | |
181 | ||
f6a9efaa | 182 | DBG2("Trace UST channel %s found by name", name); |
0177d773 | 183 | |
0114db0e | 184 | return lttng::utils::container_of(node, <t_ust_channel::node); |
97ee3a89 DG |
185 | |
186 | error: | |
f6a9efaa | 187 | DBG2("Trace UST channel %s not found by name", name); |
cd9adb8b | 188 | return nullptr; |
97ee3a89 DG |
189 | } |
190 | ||
191 | /* | |
2223c96f DG |
192 | * Find the event in the hashtable and return event pointer. RCU read side lock |
193 | * MUST be acquired before calling this. | |
97ee3a89 | 194 | */ |
18eace3b | 195 | struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht, |
28ab034a JG |
196 | char *name, |
197 | struct lttng_bytecode *filter, | |
198 | enum lttng_ust_abi_loglevel_type loglevel_type, | |
199 | int loglevel_value, | |
200 | struct lttng_event_exclusion *exclusion) | |
97ee3a89 | 201 | { |
bec39940 DG |
202 | struct lttng_ht_node_str *node; |
203 | struct lttng_ht_iter iter; | |
18eace3b | 204 | struct ltt_ust_ht_key key; |
97ee3a89 | 205 | |
a0377dfe FD |
206 | LTTNG_ASSERT(name); |
207 | LTTNG_ASSERT(ht); | |
48b7cdc2 | 208 | ASSERT_RCU_READ_LOCKED(); |
18eace3b DG |
209 | |
210 | key.name = name; | |
211 | key.filter = filter; | |
b953b8cd PP |
212 | key.loglevel_type = loglevel_type; |
213 | key.loglevel_value = loglevel_value; | |
10646003 | 214 | key.exclusion = exclusion; |
18eace3b | 215 | |
28ab034a JG |
216 | cds_lfht_lookup(ht->ht, |
217 | ht->hash_fct((void *) name, lttng_ht_seed), | |
218 | trace_ust_ht_match_event, | |
219 | &key, | |
220 | &iter.iter); | |
00d7d903 | 221 | node = lttng_ht_iter_get_node<lttng_ht_node_str>(&iter); |
cd9adb8b | 222 | if (node == nullptr) { |
97ee3a89 DG |
223 | goto error; |
224 | } | |
225 | ||
18eace3b | 226 | DBG2("Trace UST event %s found", key.name); |
f6a9efaa | 227 | |
0114db0e | 228 | return lttng::utils::container_of(node, <t_ust_event::node); |
97ee3a89 DG |
229 | |
230 | error: | |
18eace3b | 231 | DBG2("Trace UST event %s NOT found", key.name); |
cd9adb8b | 232 | return nullptr; |
97ee3a89 DG |
233 | } |
234 | ||
fefd409b DG |
235 | /* |
236 | * Lookup an agent in the session agents hash table by domain type and return | |
237 | * the object if found else NULL. | |
4da703ad JG |
238 | * |
239 | * RCU read side lock must be acquired before calling and only released | |
240 | * once the agent is no longer in scope or being used. | |
fefd409b DG |
241 | */ |
242 | struct agent *trace_ust_find_agent(struct ltt_ust_session *session, | |
28ab034a | 243 | enum lttng_domain_type domain_type) |
fefd409b | 244 | { |
cd9adb8b | 245 | struct agent *agt = nullptr; |
fefd409b DG |
246 | struct lttng_ht_node_u64 *node; |
247 | struct lttng_ht_iter iter; | |
248 | uint64_t key; | |
249 | ||
a0377dfe | 250 | LTTNG_ASSERT(session); |
fefd409b DG |
251 | |
252 | DBG3("Trace ust agent lookup for domain %d", domain_type); | |
253 | ||
254 | key = domain_type; | |
255 | ||
256 | lttng_ht_lookup(session->agents, &key, &iter); | |
00d7d903 | 257 | node = lttng_ht_iter_get_node<lttng_ht_node_u64>(&iter); |
fefd409b DG |
258 | if (!node) { |
259 | goto end; | |
260 | } | |
0114db0e | 261 | agt = lttng::utils::container_of(node, &agent::node); |
fefd409b DG |
262 | |
263 | end: | |
264 | return agt; | |
265 | } | |
266 | ||
97ee3a89 DG |
267 | /* |
268 | * Allocate and initialize a ust session data structure. | |
269 | * | |
270 | * Return pointer to structure or NULL. | |
271 | */ | |
d9bf3ca4 | 272 | struct ltt_ust_session *trace_ust_create_session(uint64_t session_id) |
97ee3a89 DG |
273 | { |
274 | struct ltt_ust_session *lus; | |
275 | ||
276 | /* Allocate a new ltt ust session */ | |
64803277 | 277 | lus = zmalloc<ltt_ust_session>(); |
cd9adb8b | 278 | if (lus == nullptr) { |
ba7f0ae5 | 279 | PERROR("create ust session zmalloc"); |
55c9e7ca | 280 | goto error_alloc; |
97ee3a89 DG |
281 | } |
282 | ||
283 | /* Init data structure */ | |
a991f516 | 284 | lus->id = session_id; |
14fb1ebe | 285 | lus->active = 0; |
97ee3a89 | 286 | |
84ad93e8 DG |
287 | /* Set default metadata channel attribute. */ |
288 | lus->metadata_attr.overwrite = DEFAULT_CHANNEL_OVERWRITE; | |
289 | lus->metadata_attr.subbuf_size = default_get_metadata_subbuf_size(); | |
290 | lus->metadata_attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM; | |
291 | lus->metadata_attr.switch_timer_interval = DEFAULT_METADATA_SWITCH_TIMER; | |
292 | lus->metadata_attr.read_timer_interval = DEFAULT_METADATA_READ_TIMER; | |
fc4b93fa | 293 | lus->metadata_attr.output = LTTNG_UST_ABI_MMAP; |
84ad93e8 | 294 | |
7972aab2 DG |
295 | /* |
296 | * Default buffer type. This can be changed through an enable channel | |
297 | * requesting a different type. Note that this can only be changed once | |
298 | * during the session lifetime which is at the first enable channel and | |
299 | * only before start. The flag buffer_type_changed indicates the status. | |
300 | */ | |
8692d4e5 | 301 | lus->buffer_type = LTTNG_BUFFER_PER_UID; |
7972aab2 DG |
302 | /* Once set to 1, the buffer_type is immutable for the session. */ |
303 | lus->buffer_type_changed = 0; | |
304 | /* Init it in case it get used after allocation. */ | |
305 | CDS_INIT_LIST_HEAD(&lus->buffer_reg_uid_list); | |
f6a9efaa DG |
306 | |
307 | /* Alloc UST global domain channels' HT */ | |
bec39940 | 308 | lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
fefd409b DG |
309 | /* Alloc agent hash table. */ |
310 | lus->agents = lttng_ht_new(0, LTTNG_HT_TYPE_U64); | |
44d3bd01 | 311 | |
159b042f JG |
312 | lus->tracker_vpid = process_attr_tracker_create(); |
313 | if (!lus->tracker_vpid) { | |
55c9e7ca JR |
314 | goto error; |
315 | } | |
159b042f JG |
316 | lus->tracker_vuid = process_attr_tracker_create(); |
317 | if (!lus->tracker_vuid) { | |
55c9e7ca JR |
318 | goto error; |
319 | } | |
159b042f JG |
320 | lus->tracker_vgid = process_attr_tracker_create(); |
321 | if (!lus->tracker_vgid) { | |
55c9e7ca JR |
322 | goto error; |
323 | } | |
00e2e675 | 324 | lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL); |
cd9adb8b | 325 | if (lus->consumer == nullptr) { |
55c9e7ca | 326 | goto error; |
00e2e675 DG |
327 | } |
328 | ||
44d3bd01 DG |
329 | DBG2("UST trace session create successful"); |
330 | ||
97ee3a89 DG |
331 | return lus; |
332 | ||
55c9e7ca | 333 | error: |
159b042f JG |
334 | process_attr_tracker_destroy(lus->tracker_vpid); |
335 | process_attr_tracker_destroy(lus->tracker_vuid); | |
336 | process_attr_tracker_destroy(lus->tracker_vgid); | |
3c339053 FD |
337 | lttng_ht_destroy(lus->domain_global.channels); |
338 | lttng_ht_destroy(lus->agents); | |
44844c29 | 339 | free(lus); |
55c9e7ca | 340 | error_alloc: |
cd9adb8b | 341 | return nullptr; |
97ee3a89 DG |
342 | } |
343 | ||
344 | /* | |
345 | * Allocate and initialize a ust channel data structure. | |
346 | * | |
347 | * Return pointer to structure or NULL. | |
348 | */ | |
51755dc8 | 349 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan, |
28ab034a | 350 | enum lttng_domain_type domain) |
97ee3a89 | 351 | { |
97ee3a89 DG |
352 | struct ltt_ust_channel *luc; |
353 | ||
a0377dfe | 354 | LTTNG_ASSERT(chan); |
0525e9ae | 355 | |
64803277 | 356 | luc = zmalloc<ltt_ust_channel>(); |
cd9adb8b | 357 | if (luc == nullptr) { |
df0f840b | 358 | PERROR("ltt_ust_channel zmalloc"); |
97ee3a89 DG |
359 | goto error; |
360 | } | |
361 | ||
51755dc8 JG |
362 | luc->domain = domain; |
363 | ||
44d3bd01 | 364 | /* Copy UST channel attributes */ |
48842b30 DG |
365 | luc->attr.overwrite = chan->attr.overwrite; |
366 | luc->attr.subbuf_size = chan->attr.subbuf_size; | |
367 | luc->attr.num_subbuf = chan->attr.num_subbuf; | |
368 | luc->attr.switch_timer_interval = chan->attr.switch_timer_interval; | |
369 | luc->attr.read_timer_interval = chan->attr.read_timer_interval; | |
fc4b93fa | 370 | luc->attr.output = (enum lttng_ust_abi_output) chan->attr.output; |
28ab034a JG |
371 | luc->monitor_timer_interval = |
372 | ((struct lttng_channel_extended *) chan->attr.extended.ptr)->monitor_timer_interval; | |
373 | luc->attr.u.s.blocking_timeout = | |
374 | ((struct lttng_channel_extended *) chan->attr.extended.ptr)->blocking_timeout; | |
44d3bd01 DG |
375 | |
376 | /* Translate to UST output enum */ | |
377 | switch (luc->attr.output) { | |
378 | default: | |
fc4b93fa | 379 | luc->attr.output = LTTNG_UST_ABI_MMAP; |
44d3bd01 | 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 | } | |
fc4b93fa | 393 | luc->name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; |
97ee3a89 | 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 | ||
a0377dfe | 423 | LTTNG_ASSERT(exclusion); |
ad11a1d3 PP |
424 | |
425 | for (i = 0; i < exclusion->count; ++i) { | |
426 | size_t j; | |
28ab034a | 427 | const char *name_a = LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, i); |
ad11a1d3 PP |
428 | |
429 | for (j = 0; j < i; ++j) { | |
28ab034a | 430 | const char *name_b = LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, j); |
ad11a1d3 PP |
431 | |
432 | if (!strncmp(name_a, name_b, LTTNG_SYMBOL_NAME_LEN)) { | |
433 | /* Match! */ | |
434 | ret = -1; | |
435 | goto end; | |
436 | } | |
437 | } | |
438 | } | |
439 | ||
440 | end: | |
441 | return ret; | |
442 | } | |
443 | ||
97ee3a89 DG |
444 | /* |
445 | * Allocate and initialize a ust event. Set name and event type. | |
49d21f93 | 446 | * We own filter_expression, filter, and exclusion. |
97ee3a89 | 447 | * |
39687410 | 448 | * Return an lttng_error_code |
97ee3a89 | 449 | */ |
39687410 | 450 | enum lttng_error_code trace_ust_create_event(struct lttng_event *ev, |
28ab034a JG |
451 | char *filter_expression, |
452 | struct lttng_bytecode *filter, | |
453 | struct lttng_event_exclusion *exclusion, | |
454 | bool internal_event, | |
455 | struct ltt_ust_event **ust_event) | |
97ee3a89 | 456 | { |
39687410 FD |
457 | struct ltt_ust_event *local_ust_event; |
458 | enum lttng_error_code ret = LTTNG_OK; | |
97ee3a89 | 459 | |
a0377dfe | 460 | LTTNG_ASSERT(ev); |
0525e9ae | 461 | |
ad11a1d3 | 462 | if (exclusion && validate_exclusion(exclusion)) { |
39687410 | 463 | ret = LTTNG_ERR_INVALID; |
ad11a1d3 PP |
464 | goto error; |
465 | } | |
466 | ||
64803277 | 467 | local_ust_event = zmalloc<ltt_ust_event>(); |
cd9adb8b | 468 | if (local_ust_event == nullptr) { |
ba7f0ae5 | 469 | PERROR("ust event zmalloc"); |
39687410 | 470 | ret = LTTNG_ERR_NOMEM; |
97ee3a89 DG |
471 | goto error; |
472 | } | |
473 | ||
39687410 | 474 | local_ust_event->internal = internal_event; |
88f06f15 | 475 | |
97ee3a89 DG |
476 | switch (ev->type) { |
477 | case LTTNG_EVENT_PROBE: | |
fc4b93fa | 478 | local_ust_event->attr.instrumentation = LTTNG_UST_ABI_PROBE; |
97ee3a89 DG |
479 | break; |
480 | case LTTNG_EVENT_FUNCTION: | |
fc4b93fa | 481 | local_ust_event->attr.instrumentation = LTTNG_UST_ABI_FUNCTION; |
97ee3a89 DG |
482 | break; |
483 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
fc4b93fa | 484 | local_ust_event->attr.instrumentation = LTTNG_UST_ABI_FUNCTION; |
97ee3a89 DG |
485 | break; |
486 | case LTTNG_EVENT_TRACEPOINT: | |
fc4b93fa | 487 | local_ust_event->attr.instrumentation = LTTNG_UST_ABI_TRACEPOINT; |
97ee3a89 DG |
488 | break; |
489 | default: | |
490 | ERR("Unknown ust instrumentation type (%d)", ev->type); | |
39687410 | 491 | ret = LTTNG_ERR_INVALID; |
44844c29 | 492 | goto error_free_event; |
97ee3a89 DG |
493 | } |
494 | ||
495 | /* Copy event name */ | |
fc4b93fa MD |
496 | strncpy(local_ust_event->attr.name, ev->name, LTTNG_UST_ABI_SYM_NAME_LEN); |
497 | local_ust_event->attr.name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; | |
97ee3a89 | 498 | |
0cda4f28 | 499 | switch (ev->loglevel_type) { |
8005f29a | 500 | case LTTNG_EVENT_LOGLEVEL_ALL: |
fc4b93fa | 501 | local_ust_event->attr.loglevel_type = LTTNG_UST_ABI_LOGLEVEL_ALL; |
28ab034a | 502 | local_ust_event->attr.loglevel = -1; /* Force to -1 */ |
0cda4f28 | 503 | break; |
8005f29a | 504 | case LTTNG_EVENT_LOGLEVEL_RANGE: |
fc4b93fa | 505 | local_ust_event->attr.loglevel_type = LTTNG_UST_ABI_LOGLEVEL_RANGE; |
39687410 | 506 | local_ust_event->attr.loglevel = ev->loglevel; |
8005f29a MD |
507 | break; |
508 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
fc4b93fa | 509 | local_ust_event->attr.loglevel_type = LTTNG_UST_ABI_LOGLEVEL_SINGLE; |
39687410 | 510 | local_ust_event->attr.loglevel = ev->loglevel; |
0cda4f28 MD |
511 | break; |
512 | default: | |
4431494b | 513 | ERR("Unknown ust loglevel type (%d)", ev->loglevel_type); |
39687410 | 514 | ret = LTTNG_ERR_INVALID; |
0cda4f28 MD |
515 | goto error_free_event; |
516 | } | |
517 | ||
025faf73 | 518 | /* Same layout. */ |
39687410 FD |
519 | local_ust_event->filter_expression = filter_expression; |
520 | local_ust_event->filter = filter; | |
521 | local_ust_event->exclusion = exclusion; | |
0cda4f28 | 522 | |
f6a9efaa | 523 | /* Init node */ |
39687410 | 524 | lttng_ht_node_init_str(&local_ust_event->node, local_ust_event->attr.name); |
97ee3a89 | 525 | |
300b8fd5 | 526 | DBG2("Trace UST event %s, loglevel (%d,%d) created", |
28ab034a JG |
527 | local_ust_event->attr.name, |
528 | local_ust_event->attr.loglevel_type, | |
529 | local_ust_event->attr.loglevel); | |
39687410 FD |
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 | ||
28ab034a | 544 | static int trace_ust_context_type_event_to_ust(enum lttng_event_context_type type) |
55cc08a6 | 545 | { |
aa3514e9 | 546 | int utype; |
0525e9ae | 547 | |
aa3514e9 | 548 | switch (type) { |
9197c5c4 | 549 | case LTTNG_EVENT_CONTEXT_VTID: |
fc4b93fa | 550 | utype = LTTNG_UST_ABI_CONTEXT_VTID; |
9197c5c4 MD |
551 | break; |
552 | case LTTNG_EVENT_CONTEXT_VPID: | |
fc4b93fa | 553 | utype = LTTNG_UST_ABI_CONTEXT_VPID; |
9197c5c4 MD |
554 | break; |
555 | case LTTNG_EVENT_CONTEXT_PTHREAD_ID: | |
fc4b93fa | 556 | utype = LTTNG_UST_ABI_CONTEXT_PTHREAD_ID; |
9197c5c4 MD |
557 | break; |
558 | case LTTNG_EVENT_CONTEXT_PROCNAME: | |
fc4b93fa | 559 | utype = LTTNG_UST_ABI_CONTEXT_PROCNAME; |
9197c5c4 | 560 | break; |
7c612c2e | 561 | case LTTNG_EVENT_CONTEXT_IP: |
fc4b93fa | 562 | utype = LTTNG_UST_ABI_CONTEXT_IP; |
7c612c2e | 563 | break; |
aa3514e9 | 564 | case LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER: |
b623cb6a | 565 | if (!lttng_ust_ctl_has_perf_counters()) { |
354e561b MD |
566 | utype = -1; |
567 | WARN("Perf counters not implemented in UST"); | |
568 | } else { | |
fc4b93fa | 569 | utype = LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER; |
354e561b | 570 | } |
aa3514e9 | 571 | break; |
bdf64013 | 572 | case LTTNG_EVENT_CONTEXT_APP_CONTEXT: |
fc4b93fa | 573 | utype = LTTNG_UST_ABI_CONTEXT_APP_CONTEXT; |
bdf64013 | 574 | break; |
f17b8732 | 575 | case LTTNG_EVENT_CONTEXT_CGROUP_NS: |
fc4b93fa | 576 | utype = LTTNG_UST_ABI_CONTEXT_CGROUP_NS; |
f17b8732 MJ |
577 | break; |
578 | case LTTNG_EVENT_CONTEXT_IPC_NS: | |
fc4b93fa | 579 | utype = LTTNG_UST_ABI_CONTEXT_IPC_NS; |
f17b8732 MJ |
580 | break; |
581 | case LTTNG_EVENT_CONTEXT_MNT_NS: | |
fc4b93fa | 582 | utype = LTTNG_UST_ABI_CONTEXT_MNT_NS; |
f17b8732 MJ |
583 | break; |
584 | case LTTNG_EVENT_CONTEXT_NET_NS: | |
fc4b93fa | 585 | utype = LTTNG_UST_ABI_CONTEXT_NET_NS; |
f17b8732 MJ |
586 | break; |
587 | case LTTNG_EVENT_CONTEXT_PID_NS: | |
fc4b93fa | 588 | utype = LTTNG_UST_ABI_CONTEXT_PID_NS; |
f17b8732 | 589 | break; |
d37ac3cd | 590 | case LTTNG_EVENT_CONTEXT_TIME_NS: |
fc4b93fa | 591 | utype = LTTNG_UST_ABI_CONTEXT_TIME_NS; |
d37ac3cd | 592 | break; |
f17b8732 | 593 | case LTTNG_EVENT_CONTEXT_USER_NS: |
fc4b93fa | 594 | utype = LTTNG_UST_ABI_CONTEXT_USER_NS; |
f17b8732 MJ |
595 | break; |
596 | case LTTNG_EVENT_CONTEXT_UTS_NS: | |
fc4b93fa | 597 | utype = LTTNG_UST_ABI_CONTEXT_UTS_NS; |
f17b8732 | 598 | break; |
4fc59cb8 | 599 | case LTTNG_EVENT_CONTEXT_VUID: |
fc4b93fa | 600 | utype = LTTNG_UST_ABI_CONTEXT_VUID; |
4fc59cb8 MJ |
601 | break; |
602 | case LTTNG_EVENT_CONTEXT_VEUID: | |
fc4b93fa | 603 | utype = LTTNG_UST_ABI_CONTEXT_VEUID; |
4fc59cb8 MJ |
604 | break; |
605 | case LTTNG_EVENT_CONTEXT_VSUID: | |
fc4b93fa | 606 | utype = LTTNG_UST_ABI_CONTEXT_VSUID; |
4fc59cb8 MJ |
607 | break; |
608 | case LTTNG_EVENT_CONTEXT_VGID: | |
fc4b93fa | 609 | utype = LTTNG_UST_ABI_CONTEXT_VGID; |
4fc59cb8 MJ |
610 | break; |
611 | case LTTNG_EVENT_CONTEXT_VEGID: | |
fc4b93fa | 612 | utype = LTTNG_UST_ABI_CONTEXT_VEGID; |
4fc59cb8 MJ |
613 | break; |
614 | case LTTNG_EVENT_CONTEXT_VSGID: | |
fc4b93fa | 615 | utype = LTTNG_UST_ABI_CONTEXT_VSGID; |
4fc59cb8 | 616 | break; |
9197c5c4 | 617 | default: |
aa3514e9 MD |
618 | utype = -1; |
619 | break; | |
620 | } | |
621 | return utype; | |
622 | } | |
623 | ||
624 | /* | |
625 | * Return 1 if contexts match, 0 otherwise. | |
626 | */ | |
df4f5a87 | 627 | int trace_ust_match_context(const struct ltt_ust_context *uctx, |
28ab034a | 628 | const struct lttng_event_context *ctx) |
aa3514e9 MD |
629 | { |
630 | int utype; | |
631 | ||
632 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
633 | if (utype < 0) { | |
634 | return 0; | |
635 | } | |
636 | if (uctx->ctx.ctx != utype) { | |
637 | return 0; | |
638 | } | |
639 | switch (utype) { | |
fc4b93fa | 640 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
28ab034a | 641 | if (uctx->ctx.u.perf_counter.type != ctx->u.perf_counter.type) { |
aa3514e9 MD |
642 | return 0; |
643 | } | |
28ab034a | 644 | if (uctx->ctx.u.perf_counter.config != ctx->u.perf_counter.config) { |
aa3514e9 MD |
645 | return 0; |
646 | } | |
647 | if (strncmp(uctx->ctx.u.perf_counter.name, | |
28ab034a | 648 | ctx->u.perf_counter.name, |
5c7248cd | 649 | LTTNG_UST_ABI_SYM_NAME_LEN) != 0) { |
aa3514e9 MD |
650 | return 0; |
651 | } | |
652 | break; | |
fc4b93fa | 653 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
a0377dfe FD |
654 | LTTNG_ASSERT(uctx->ctx.u.app_ctx.provider_name); |
655 | LTTNG_ASSERT(uctx->ctx.u.app_ctx.ctx_name); | |
5c7248cd JG |
656 | if (strcmp(uctx->ctx.u.app_ctx.provider_name, ctx->u.app_ctx.provider_name) != 0 || |
657 | strcmp(uctx->ctx.u.app_ctx.ctx_name, ctx->u.app_ctx.ctx_name) != 0) { | |
54fb33cf JG |
658 | return 0; |
659 | } | |
aa3514e9 MD |
660 | default: |
661 | break; | |
aa3514e9 MD |
662 | } |
663 | return 1; | |
664 | } | |
665 | ||
666 | /* | |
667 | * Allocate and initialize an UST context. | |
668 | * | |
669 | * Return pointer to structure or NULL. | |
670 | */ | |
28ab034a | 671 | struct ltt_ust_context *trace_ust_create_context(const struct lttng_event_context *ctx) |
aa3514e9 | 672 | { |
cd9adb8b | 673 | struct ltt_ust_context *uctx = nullptr; |
aa3514e9 MD |
674 | int utype; |
675 | ||
a0377dfe | 676 | LTTNG_ASSERT(ctx); |
aa3514e9 MD |
677 | |
678 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
679 | if (utype < 0) { | |
1cf992b8 | 680 | ERR("Invalid UST context"); |
bdf64013 | 681 | goto end; |
9197c5c4 | 682 | } |
55cc08a6 | 683 | |
64803277 | 684 | uctx = zmalloc<ltt_ust_context>(); |
bdf64013 | 685 | if (!uctx) { |
55cc08a6 | 686 | PERROR("zmalloc ltt_ust_context"); |
bdf64013 | 687 | goto end; |
55cc08a6 DG |
688 | } |
689 | ||
fc4b93fa | 690 | uctx->ctx.ctx = (enum lttng_ust_abi_context_type) utype; |
aa3514e9 | 691 | switch (utype) { |
fc4b93fa | 692 | case LTTNG_UST_ABI_CONTEXT_PERF_THREAD_COUNTER: |
aa3514e9 MD |
693 | uctx->ctx.u.perf_counter.type = ctx->u.perf_counter.type; |
694 | uctx->ctx.u.perf_counter.config = ctx->u.perf_counter.config; | |
28ab034a JG |
695 | strncpy(uctx->ctx.u.perf_counter.name, |
696 | ctx->u.perf_counter.name, | |
697 | LTTNG_UST_ABI_SYM_NAME_LEN); | |
fc4b93fa | 698 | uctx->ctx.u.perf_counter.name[LTTNG_UST_ABI_SYM_NAME_LEN - 1] = '\0'; |
aa3514e9 | 699 | break; |
fc4b93fa | 700 | case LTTNG_UST_ABI_CONTEXT_APP_CONTEXT: |
bdf64013 | 701 | { |
cd9adb8b | 702 | char *provider_name = nullptr, *ctx_name = nullptr; |
bdf64013 JG |
703 | |
704 | provider_name = strdup(ctx->u.app_ctx.provider_name); | |
705 | if (!provider_name) { | |
706 | goto error; | |
707 | } | |
708 | uctx->ctx.u.app_ctx.provider_name = provider_name; | |
709 | ||
710 | ctx_name = strdup(ctx->u.app_ctx.ctx_name); | |
711 | if (!ctx_name) { | |
712 | goto error; | |
713 | } | |
714 | uctx->ctx.u.app_ctx.ctx_name = ctx_name; | |
715 | break; | |
716 | } | |
aa3514e9 MD |
717 | default: |
718 | break; | |
719 | } | |
bec39940 | 720 | lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx); |
bdf64013 | 721 | end: |
55cc08a6 | 722 | return uctx; |
55cc08a6 | 723 | error: |
bdf64013 | 724 | trace_ust_destroy_context(uctx); |
cd9adb8b | 725 | return nullptr; |
55cc08a6 DG |
726 | } |
727 | ||
55c9e7ca | 728 | static void destroy_id_tracker_node_rcu(struct rcu_head *head) |
a9ad0c8f | 729 | { |
28ab034a JG |
730 | struct ust_id_tracker_node *tracker_node = |
731 | caa_container_of(head, struct ust_id_tracker_node, node.head); | |
a9ad0c8f MD |
732 | free(tracker_node); |
733 | } | |
734 | ||
55c9e7ca | 735 | static void destroy_id_tracker_node(struct ust_id_tracker_node *tracker_node) |
a9ad0c8f | 736 | { |
55c9e7ca | 737 | call_rcu(&tracker_node->node.head, destroy_id_tracker_node_rcu); |
a9ad0c8f MD |
738 | } |
739 | ||
55c9e7ca | 740 | static int init_id_tracker(struct ust_id_tracker *id_tracker) |
a9ad0c8f | 741 | { |
55c9e7ca | 742 | int ret = LTTNG_OK; |
a9ad0c8f | 743 | |
55c9e7ca JR |
744 | id_tracker->ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); |
745 | if (!id_tracker->ht) { | |
746 | ret = LTTNG_ERR_NOMEM; | |
a9ad0c8f MD |
747 | goto end; |
748 | } | |
749 | ||
750 | end: | |
751 | return ret; | |
752 | } | |
753 | ||
754 | /* | |
55c9e7ca | 755 | * Teardown id tracker content, but don't free id_tracker object. |
a9ad0c8f | 756 | */ |
55c9e7ca | 757 | static void fini_id_tracker(struct ust_id_tracker *id_tracker) |
a9ad0c8f | 758 | { |
55c9e7ca | 759 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
760 | struct lttng_ht_iter iter; |
761 | ||
55c9e7ca | 762 | if (!id_tracker->ht) { |
a9ad0c8f MD |
763 | return; |
764 | } | |
a9ad0c8f | 765 | |
56047f5a JG |
766 | { |
767 | lttng::urcu::read_lock_guard read_lock; | |
768 | ||
769 | cds_lfht_for_each_entry (id_tracker->ht->ht, &iter.iter, tracker_node, node.node) { | |
770 | int ret = lttng_ht_del(id_tracker->ht, &iter); | |
771 | ||
772 | LTTNG_ASSERT(!ret); | |
773 | destroy_id_tracker_node(tracker_node); | |
774 | } | |
a9ad0c8f | 775 | } |
56047f5a | 776 | |
3c339053 | 777 | lttng_ht_destroy(id_tracker->ht); |
cd9adb8b | 778 | id_tracker->ht = nullptr; |
a9ad0c8f MD |
779 | } |
780 | ||
28ab034a JG |
781 | static struct ust_id_tracker_node * |
782 | id_tracker_lookup(struct ust_id_tracker *id_tracker, int id, struct lttng_ht_iter *iter) | |
a9ad0c8f | 783 | { |
55c9e7ca | 784 | unsigned long _id = (unsigned long) id; |
a9ad0c8f MD |
785 | struct lttng_ht_node_ulong *node; |
786 | ||
55c9e7ca | 787 | lttng_ht_lookup(id_tracker->ht, (void *) _id, iter); |
00d7d903 | 788 | node = lttng_ht_iter_get_node<lttng_ht_node_ulong>(iter); |
a9ad0c8f | 789 | if (node) { |
0114db0e | 790 | return lttng::utils::container_of(node, &ust_id_tracker_node::node); |
a9ad0c8f | 791 | } else { |
cd9adb8b | 792 | return nullptr; |
a9ad0c8f MD |
793 | } |
794 | } | |
795 | ||
55c9e7ca | 796 | static int id_tracker_add_id(struct ust_id_tracker *id_tracker, int id) |
a9ad0c8f MD |
797 | { |
798 | int retval = LTTNG_OK; | |
55c9e7ca | 799 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
800 | struct lttng_ht_iter iter; |
801 | ||
55c9e7ca | 802 | if (id < 0) { |
a9ad0c8f MD |
803 | retval = LTTNG_ERR_INVALID; |
804 | goto end; | |
805 | } | |
55c9e7ca | 806 | tracker_node = id_tracker_lookup(id_tracker, id, &iter); |
a9ad0c8f MD |
807 | if (tracker_node) { |
808 | /* Already exists. */ | |
159b042f | 809 | retval = LTTNG_ERR_PROCESS_ATTR_EXISTS; |
a9ad0c8f MD |
810 | goto end; |
811 | } | |
64803277 | 812 | tracker_node = zmalloc<ust_id_tracker_node>(); |
a9ad0c8f MD |
813 | if (!tracker_node) { |
814 | retval = LTTNG_ERR_NOMEM; | |
815 | goto end; | |
816 | } | |
55c9e7ca JR |
817 | lttng_ht_node_init_ulong(&tracker_node->node, (unsigned long) id); |
818 | lttng_ht_add_unique_ulong(id_tracker->ht, &tracker_node->node); | |
a9ad0c8f MD |
819 | end: |
820 | return retval; | |
821 | } | |
822 | ||
55c9e7ca | 823 | static int id_tracker_del_id(struct ust_id_tracker *id_tracker, int id) |
a9ad0c8f MD |
824 | { |
825 | int retval = LTTNG_OK, ret; | |
55c9e7ca | 826 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
827 | struct lttng_ht_iter iter; |
828 | ||
55c9e7ca | 829 | if (id < 0) { |
a9ad0c8f MD |
830 | retval = LTTNG_ERR_INVALID; |
831 | goto end; | |
832 | } | |
55c9e7ca | 833 | tracker_node = id_tracker_lookup(id_tracker, id, &iter); |
a9ad0c8f MD |
834 | if (!tracker_node) { |
835 | /* Not found */ | |
159b042f | 836 | retval = LTTNG_ERR_PROCESS_ATTR_MISSING; |
a9ad0c8f MD |
837 | goto end; |
838 | } | |
55c9e7ca | 839 | ret = lttng_ht_del(id_tracker->ht, &iter); |
a0377dfe | 840 | LTTNG_ASSERT(!ret); |
a9ad0c8f | 841 | |
55c9e7ca | 842 | destroy_id_tracker_node(tracker_node); |
a9ad0c8f MD |
843 | end: |
844 | return retval; | |
845 | } | |
846 | ||
55c9e7ca | 847 | static struct ust_id_tracker *get_id_tracker(struct ltt_ust_session *session, |
28ab034a | 848 | enum lttng_process_attr process_attr) |
55c9e7ca | 849 | { |
159b042f JG |
850 | switch (process_attr) { |
851 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
55c9e7ca | 852 | return &session->vpid_tracker; |
159b042f | 853 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
55c9e7ca | 854 | return &session->vuid_tracker; |
159b042f | 855 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
55c9e7ca JR |
856 | return &session->vgid_tracker; |
857 | default: | |
cd9adb8b | 858 | return nullptr; |
55c9e7ca JR |
859 | } |
860 | } | |
861 | ||
28ab034a JG |
862 | static struct process_attr_tracker * |
863 | _trace_ust_get_process_attr_tracker(struct ltt_ust_session *session, | |
864 | enum lttng_process_attr process_attr) | |
55c9e7ca | 865 | { |
159b042f JG |
866 | switch (process_attr) { |
867 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
868 | return session->tracker_vpid; | |
869 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
870 | return session->tracker_vuid; | |
871 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
872 | return session->tracker_vgid; | |
55c9e7ca | 873 | default: |
cd9adb8b | 874 | return nullptr; |
55c9e7ca JR |
875 | } |
876 | } | |
877 | ||
28ab034a JG |
878 | const struct process_attr_tracker * |
879 | trace_ust_get_process_attr_tracker(struct ltt_ust_session *session, | |
880 | enum lttng_process_attr process_attr) | |
159b042f | 881 | { |
28ab034a JG |
882 | return (const struct process_attr_tracker *) _trace_ust_get_process_attr_tracker( |
883 | session, process_attr); | |
159b042f JG |
884 | } |
885 | ||
a9ad0c8f MD |
886 | /* |
887 | * The session lock is held when calling this function. | |
888 | */ | |
159b042f | 889 | int trace_ust_id_tracker_lookup(enum lttng_process_attr process_attr, |
28ab034a JG |
890 | struct ltt_ust_session *session, |
891 | int id) | |
a9ad0c8f MD |
892 | { |
893 | struct lttng_ht_iter iter; | |
55c9e7ca | 894 | struct ust_id_tracker *id_tracker; |
a9ad0c8f | 895 | |
159b042f | 896 | id_tracker = get_id_tracker(session, process_attr); |
55c9e7ca JR |
897 | if (!id_tracker) { |
898 | abort(); | |
899 | } | |
900 | if (!id_tracker->ht) { | |
a9ad0c8f MD |
901 | return 1; |
902 | } | |
55c9e7ca | 903 | if (id_tracker_lookup(id_tracker, id, &iter)) { |
a9ad0c8f MD |
904 | return 1; |
905 | } | |
906 | return 0; | |
907 | } | |
908 | ||
909 | /* | |
910 | * Called with the session lock held. | |
911 | */ | |
28ab034a JG |
912 | enum lttng_error_code |
913 | trace_ust_process_attr_tracker_set_tracking_policy(struct ltt_ust_session *session, | |
914 | enum lttng_process_attr process_attr, | |
915 | enum lttng_tracking_policy policy) | |
a9ad0c8f | 916 | { |
159b042f JG |
917 | int ret; |
918 | enum lttng_error_code ret_code = LTTNG_OK; | |
28ab034a | 919 | struct ust_id_tracker *id_tracker = get_id_tracker(session, process_attr); |
159b042f | 920 | struct process_attr_tracker *tracker = |
28ab034a | 921 | _trace_ust_get_process_attr_tracker(session, process_attr); |
88e3c2f5 | 922 | bool should_update_apps = false; |
159b042f | 923 | enum lttng_tracking_policy previous_policy; |
55c9e7ca | 924 | |
159b042f JG |
925 | if (!tracker) { |
926 | ret_code = LTTNG_ERR_INVALID; | |
927 | goto end; | |
55c9e7ca | 928 | } |
a9ad0c8f | 929 | |
159b042f JG |
930 | previous_policy = process_attr_tracker_get_tracking_policy(tracker); |
931 | ret = process_attr_tracker_set_tracking_policy(tracker, policy); | |
932 | if (ret) { | |
933 | ret_code = LTTNG_ERR_UNK; | |
55c9e7ca JR |
934 | goto end; |
935 | } | |
936 | ||
159b042f JG |
937 | if (previous_policy == policy) { |
938 | goto end; | |
55c9e7ca | 939 | } |
159b042f JG |
940 | |
941 | switch (policy) { | |
942 | case LTTNG_TRACKING_POLICY_INCLUDE_ALL: | |
943 | /* Track all values: destroy tracker if exists. */ | |
55c9e7ca JR |
944 | if (id_tracker->ht) { |
945 | fini_id_tracker(id_tracker); | |
a9ad0c8f | 946 | /* Ensure all apps have session. */ |
88e3c2f5 | 947 | should_update_apps = true; |
a9ad0c8f | 948 | } |
159b042f JG |
949 | break; |
950 | case LTTNG_TRACKING_POLICY_EXCLUDE_ALL: | |
951 | case LTTNG_TRACKING_POLICY_INCLUDE_SET: | |
952 | /* fall-through. */ | |
953 | fini_id_tracker(id_tracker); | |
7966af57 | 954 | ret_code = (lttng_error_code) init_id_tracker(id_tracker); |
159b042f JG |
955 | if (ret_code != LTTNG_OK) { |
956 | ERR("Error initializing ID tracker"); | |
957 | goto end; | |
a9ad0c8f | 958 | } |
159b042f JG |
959 | /* Remove all apps from session. */ |
960 | should_update_apps = true; | |
961 | break; | |
962 | default: | |
963 | abort(); | |
a9ad0c8f | 964 | } |
88e3c2f5 JG |
965 | if (should_update_apps && session->active) { |
966 | ust_app_global_update_all(session); | |
967 | } | |
a9ad0c8f | 968 | end: |
159b042f | 969 | return ret_code; |
a9ad0c8f MD |
970 | } |
971 | ||
159b042f | 972 | /* Called with the session lock held. */ |
28ab034a JG |
973 | enum lttng_error_code |
974 | trace_ust_process_attr_tracker_inclusion_set_add_value(struct ltt_ust_session *session, | |
975 | enum lttng_process_attr process_attr, | |
976 | const struct process_attr_value *value) | |
a9ad0c8f | 977 | { |
159b042f | 978 | enum lttng_error_code ret_code = LTTNG_OK; |
a5a30920 | 979 | bool should_update_apps = false; |
28ab034a | 980 | struct ust_id_tracker *id_tracker = get_id_tracker(session, process_attr); |
159b042f JG |
981 | struct process_attr_tracker *tracker; |
982 | int integral_value; | |
983 | enum process_attr_tracker_status status; | |
984 | struct ust_app *app; | |
55c9e7ca | 985 | |
159b042f JG |
986 | /* |
987 | * Convert process attribute tracker value to the integral | |
988 | * representation required by the kern-ctl API. | |
989 | */ | |
990 | switch (process_attr) { | |
991 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
992 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
993 | integral_value = (int) value->value.pid; | |
994 | break; | |
995 | case LTTNG_PROCESS_ATTR_USER_ID: | |
996 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
997 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME) { | |
998 | uid_t uid; | |
999 | ||
28ab034a | 1000 | ret_code = utils_user_id_from_name(value->value.user_name, &uid); |
159b042f JG |
1001 | if (ret_code != LTTNG_OK) { |
1002 | goto end; | |
1003 | } | |
1004 | integral_value = (int) uid; | |
1005 | } else { | |
1006 | integral_value = (int) value->value.uid; | |
1007 | } | |
1008 | break; | |
1009 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
1010 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
1011 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME) { | |
1012 | gid_t gid; | |
1013 | ||
28ab034a | 1014 | ret_code = utils_group_id_from_name(value->value.group_name, &gid); |
159b042f JG |
1015 | if (ret_code != LTTNG_OK) { |
1016 | goto end; | |
1017 | } | |
1018 | integral_value = (int) gid; | |
1019 | } else { | |
1020 | integral_value = (int) value->value.gid; | |
1021 | } | |
1022 | break; | |
1023 | default: | |
1024 | ret_code = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
1025 | goto end; |
1026 | } | |
a9ad0c8f | 1027 | |
159b042f JG |
1028 | tracker = _trace_ust_get_process_attr_tracker(session, process_attr); |
1029 | if (!tracker) { | |
1030 | ret_code = LTTNG_ERR_INVALID; | |
74675e31 | 1031 | goto end; |
55c9e7ca JR |
1032 | } |
1033 | ||
159b042f JG |
1034 | status = process_attr_tracker_inclusion_set_add_value(tracker, value); |
1035 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { | |
1036 | switch (status) { | |
1037 | case PROCESS_ATTR_TRACKER_STATUS_EXISTS: | |
1038 | ret_code = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
1039 | break; | |
1040 | case PROCESS_ATTR_TRACKER_STATUS_INVALID_TRACKING_POLICY: | |
1041 | ret_code = LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY; | |
1042 | break; | |
1043 | case PROCESS_ATTR_TRACKER_STATUS_ERROR: | |
1044 | default: | |
1045 | ret_code = LTTNG_ERR_UNK; | |
1046 | break; | |
a9ad0c8f | 1047 | } |
159b042f JG |
1048 | goto end; |
1049 | } | |
a9ad0c8f | 1050 | |
159b042f | 1051 | DBG("User space track %s %d for session id %" PRIu64, |
28ab034a JG |
1052 | lttng_process_attr_to_string(process_attr), |
1053 | integral_value, | |
1054 | session->id); | |
a9ad0c8f | 1055 | |
7966af57 | 1056 | ret_code = (lttng_error_code) id_tracker_add_id(id_tracker, integral_value); |
159b042f JG |
1057 | if (ret_code != LTTNG_OK) { |
1058 | goto end; | |
1059 | } | |
1060 | /* Add session to application */ | |
1061 | switch (process_attr) { | |
1062 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1063 | app = ust_app_find_by_pid(integral_value); | |
1064 | if (app) { | |
a5a30920 | 1065 | should_update_apps = true; |
a9ad0c8f | 1066 | } |
159b042f JG |
1067 | break; |
1068 | default: | |
1069 | should_update_apps = true; | |
1070 | break; | |
a9ad0c8f | 1071 | } |
a5a30920 JR |
1072 | if (should_update_apps && session->active) { |
1073 | ust_app_global_update_all(session); | |
1074 | } | |
a9ad0c8f | 1075 | end: |
159b042f | 1076 | return ret_code; |
a9ad0c8f MD |
1077 | } |
1078 | ||
159b042f | 1079 | /* Called with the session lock held. */ |
28ab034a JG |
1080 | enum lttng_error_code |
1081 | trace_ust_process_attr_tracker_inclusion_set_remove_value(struct ltt_ust_session *session, | |
1082 | enum lttng_process_attr process_attr, | |
1083 | const struct process_attr_value *value) | |
a5dfbb9d | 1084 | { |
159b042f JG |
1085 | enum lttng_error_code ret_code = LTTNG_OK; |
1086 | bool should_update_apps = false; | |
28ab034a | 1087 | struct ust_id_tracker *id_tracker = get_id_tracker(session, process_attr); |
159b042f JG |
1088 | struct process_attr_tracker *tracker; |
1089 | int integral_value; | |
1090 | enum process_attr_tracker_status status; | |
1091 | struct ust_app *app; | |
a5dfbb9d | 1092 | |
159b042f JG |
1093 | /* |
1094 | * Convert process attribute tracker value to the integral | |
1095 | * representation required by the kern-ctl API. | |
1096 | */ | |
1097 | switch (process_attr) { | |
1098 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
1099 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1100 | integral_value = (int) value->value.pid; | |
1101 | break; | |
1102 | case LTTNG_PROCESS_ATTR_USER_ID: | |
1103 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
1104 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME) { | |
1105 | uid_t uid; | |
1106 | ||
28ab034a | 1107 | ret_code = utils_user_id_from_name(value->value.user_name, &uid); |
159b042f JG |
1108 | if (ret_code != LTTNG_OK) { |
1109 | goto end; | |
1110 | } | |
1111 | integral_value = (int) uid; | |
1112 | } else { | |
1113 | integral_value = (int) value->value.uid; | |
1114 | } | |
1115 | break; | |
1116 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
1117 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
1118 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME) { | |
1119 | gid_t gid; | |
1120 | ||
28ab034a | 1121 | ret_code = utils_group_id_from_name(value->value.group_name, &gid); |
159b042f JG |
1122 | if (ret_code != LTTNG_OK) { |
1123 | goto end; | |
1124 | } | |
1125 | integral_value = (int) gid; | |
1126 | } else { | |
1127 | integral_value = (int) value->value.gid; | |
1128 | } | |
1129 | break; | |
1130 | default: | |
1131 | ret_code = LTTNG_ERR_INVALID; | |
1132 | goto end; | |
a5dfbb9d MD |
1133 | } |
1134 | ||
159b042f JG |
1135 | tracker = _trace_ust_get_process_attr_tracker(session, process_attr); |
1136 | if (!tracker) { | |
1137 | ret_code = LTTNG_ERR_INVALID; | |
74675e31 | 1138 | goto end; |
159b042f JG |
1139 | } |
1140 | ||
28ab034a | 1141 | status = process_attr_tracker_inclusion_set_remove_value(tracker, value); |
159b042f JG |
1142 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { |
1143 | switch (status) { | |
1144 | case PROCESS_ATTR_TRACKER_STATUS_MISSING: | |
1145 | ret_code = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
1146 | break; | |
1147 | case PROCESS_ATTR_TRACKER_STATUS_INVALID_TRACKING_POLICY: | |
1148 | ret_code = LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY; | |
1149 | break; | |
1150 | case PROCESS_ATTR_TRACKER_STATUS_ERROR: | |
1151 | default: | |
1152 | ret_code = LTTNG_ERR_UNK; | |
1153 | break; | |
1154 | } | |
a7a533cd | 1155 | goto end; |
a5dfbb9d | 1156 | } |
a7a533cd | 1157 | |
159b042f | 1158 | DBG("User space untrack %s %d for session id %" PRIu64, |
28ab034a JG |
1159 | lttng_process_attr_to_string(process_attr), |
1160 | integral_value, | |
1161 | session->id); | |
159b042f | 1162 | |
7966af57 | 1163 | ret_code = (lttng_error_code) id_tracker_del_id(id_tracker, integral_value); |
159b042f | 1164 | if (ret_code != LTTNG_OK) { |
a7a533cd JR |
1165 | goto end; |
1166 | } | |
159b042f JG |
1167 | /* Add session to application */ |
1168 | switch (process_attr) { | |
1169 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1170 | app = ust_app_find_by_pid(integral_value); | |
1171 | if (app) { | |
1172 | should_update_apps = true; | |
1173 | } | |
1174 | break; | |
1175 | default: | |
1176 | should_update_apps = true; | |
1177 | break; | |
1178 | } | |
1179 | if (should_update_apps && session->active) { | |
1180 | ust_app_global_update_all(session); | |
1181 | } | |
a7a533cd | 1182 | end: |
159b042f | 1183 | return ret_code; |
a5dfbb9d MD |
1184 | } |
1185 | ||
f6a9efaa DG |
1186 | /* |
1187 | * RCU safe free context structure. | |
1188 | */ | |
1189 | static void destroy_context_rcu(struct rcu_head *head) | |
1190 | { | |
bec39940 | 1191 | struct lttng_ht_node_ulong *node = |
0114db0e | 1192 | lttng::utils::container_of(head, <tng_ht_node_ulong::head); |
28ab034a | 1193 | struct ltt_ust_context *ctx = lttng::utils::container_of(node, <t_ust_context::node); |
f6a9efaa | 1194 | |
bdf64013 | 1195 | trace_ust_destroy_context(ctx); |
f6a9efaa DG |
1196 | } |
1197 | ||
1198 | /* | |
1199 | * Cleanup UST context hash table. | |
1200 | */ | |
7bd39047 | 1201 | static void destroy_contexts(struct lttng_ht *ht) |
f6a9efaa DG |
1202 | { |
1203 | int ret; | |
bec39940 DG |
1204 | struct lttng_ht_node_ulong *node; |
1205 | struct lttng_ht_iter iter; | |
31746f93 | 1206 | struct ltt_ust_context *ctx; |
f6a9efaa | 1207 | |
a0377dfe | 1208 | LTTNG_ASSERT(ht); |
0525e9ae | 1209 | |
56047f5a JG |
1210 | { |
1211 | lttng::urcu::read_lock_guard read_lock; | |
1212 | ||
1213 | cds_lfht_for_each_entry (ht->ht, &iter.iter, node, node) { | |
1214 | /* Remove from ordered list. */ | |
1215 | ctx = lttng::utils::container_of(node, <t_ust_context::node); | |
1216 | cds_list_del(&ctx->list); | |
1217 | /* Remove from channel's hash table. */ | |
1218 | ret = lttng_ht_del(ht, &iter); | |
1219 | if (!ret) { | |
1220 | call_rcu(&node->head, destroy_context_rcu); | |
1221 | } | |
f6a9efaa | 1222 | } |
f6a9efaa | 1223 | } |
ed52805d | 1224 | |
3c339053 | 1225 | lttng_ht_destroy(ht); |
f6a9efaa DG |
1226 | } |
1227 | ||
97ee3a89 DG |
1228 | /* |
1229 | * Cleanup ust event structure. | |
1230 | */ | |
1231 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
1232 | { | |
a0377dfe | 1233 | LTTNG_ASSERT(event); |
0525e9ae | 1234 | |
f6a9efaa | 1235 | DBG2("Trace destroy UST event %s", event->attr.name); |
6b453b5e | 1236 | free(event->filter_expression); |
53a80697 | 1237 | free(event->filter); |
40024f8a | 1238 | free(event->exclusion); |
97ee3a89 DG |
1239 | free(event); |
1240 | } | |
1241 | ||
bdf64013 JG |
1242 | /* |
1243 | * Cleanup ust context structure. | |
1244 | */ | |
1245 | void trace_ust_destroy_context(struct ltt_ust_context *ctx) | |
1246 | { | |
a0377dfe | 1247 | LTTNG_ASSERT(ctx); |
bdf64013 | 1248 | |
fc4b93fa | 1249 | if (ctx->ctx.ctx == LTTNG_UST_ABI_CONTEXT_APP_CONTEXT) { |
bdf64013 JG |
1250 | free(ctx->ctx.u.app_ctx.provider_name); |
1251 | free(ctx->ctx.u.app_ctx.ctx_name); | |
1252 | } | |
1253 | free(ctx); | |
1254 | } | |
1255 | ||
f6a9efaa DG |
1256 | /* |
1257 | * URCU intermediate call to complete destroy event. | |
1258 | */ | |
1259 | static void destroy_event_rcu(struct rcu_head *head) | |
1260 | { | |
28ab034a JG |
1261 | struct lttng_ht_node_str *node = lttng::utils::container_of(head, <tng_ht_node_str::head); |
1262 | struct ltt_ust_event *event = lttng::utils::container_of(node, <t_ust_event::node); | |
f6a9efaa DG |
1263 | |
1264 | trace_ust_destroy_event(event); | |
1265 | } | |
1266 | ||
284d8f55 DG |
1267 | /* |
1268 | * Cleanup UST events hashtable. | |
1269 | */ | |
7bd39047 | 1270 | static void destroy_events(struct lttng_ht *events) |
ed52805d DG |
1271 | { |
1272 | int ret; | |
bec39940 DG |
1273 | struct lttng_ht_node_str *node; |
1274 | struct lttng_ht_iter iter; | |
ed52805d | 1275 | |
a0377dfe | 1276 | LTTNG_ASSERT(events); |
0525e9ae | 1277 | |
56047f5a JG |
1278 | { |
1279 | lttng::urcu::read_lock_guard read_lock; | |
1280 | ||
1281 | cds_lfht_for_each_entry (events->ht, &iter.iter, node, node) { | |
1282 | ret = lttng_ht_del(events, &iter); | |
1283 | LTTNG_ASSERT(!ret); | |
1284 | call_rcu(&node->head, destroy_event_rcu); | |
1285 | } | |
ed52805d DG |
1286 | } |
1287 | ||
3c339053 | 1288 | lttng_ht_destroy(events); |
ed52805d DG |
1289 | } |
1290 | ||
97ee3a89 DG |
1291 | /* |
1292 | * Cleanup ust channel structure. | |
36b588ed MD |
1293 | * |
1294 | * Should _NOT_ be called with RCU read lock held. | |
97ee3a89 | 1295 | */ |
36b588ed | 1296 | static void _trace_ust_destroy_channel(struct ltt_ust_channel *channel) |
97ee3a89 | 1297 | { |
a0377dfe | 1298 | LTTNG_ASSERT(channel); |
0525e9ae | 1299 | |
f6a9efaa | 1300 | DBG2("Trace destroy UST channel %s", channel->name); |
97ee3a89 | 1301 | |
97ee3a89 | 1302 | free(channel); |
f6a9efaa DG |
1303 | } |
1304 | ||
1305 | /* | |
1306 | * URCU intermediate call to complete destroy channel. | |
1307 | */ | |
1308 | static void destroy_channel_rcu(struct rcu_head *head) | |
1309 | { | |
28ab034a JG |
1310 | struct lttng_ht_node_str *node = lttng::utils::container_of(head, <tng_ht_node_str::head); |
1311 | struct ltt_ust_channel *channel = lttng::utils::container_of(node, <t_ust_channel::node); | |
f6a9efaa | 1312 | |
36b588ed MD |
1313 | _trace_ust_destroy_channel(channel); |
1314 | } | |
1315 | ||
1316 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
1317 | { | |
627cbbe7 MD |
1318 | /* Destroying all events of the channel */ |
1319 | destroy_events(channel->events); | |
1320 | /* Destroying all context of the channel */ | |
1321 | destroy_contexts(channel->ctx); | |
1322 | ||
36b588ed | 1323 | call_rcu(&channel->node.head, destroy_channel_rcu); |
97ee3a89 DG |
1324 | } |
1325 | ||
d5979e4a DG |
1326 | /* |
1327 | * Remove an UST channel from a channel HT. | |
1328 | */ | |
28ab034a | 1329 | void trace_ust_delete_channel(struct lttng_ht *ht, struct ltt_ust_channel *channel) |
d5979e4a DG |
1330 | { |
1331 | int ret; | |
1332 | struct lttng_ht_iter iter; | |
1333 | ||
a0377dfe FD |
1334 | LTTNG_ASSERT(ht); |
1335 | LTTNG_ASSERT(channel); | |
d5979e4a DG |
1336 | |
1337 | iter.iter.node = &channel->node.node; | |
1338 | ret = lttng_ht_del(ht, &iter); | |
a0377dfe | 1339 | LTTNG_ASSERT(!ret); |
d5979e4a DG |
1340 | } |
1341 | ||
d7bfb9b0 JG |
1342 | int trace_ust_regenerate_metadata(struct ltt_ust_session *usess) |
1343 | { | |
1344 | int ret = 0; | |
cd9adb8b JG |
1345 | struct buffer_reg_uid *uid_reg = nullptr; |
1346 | struct buffer_reg_session *session_reg = nullptr; | |
d7bfb9b0 | 1347 | |
56047f5a | 1348 | lttng::urcu::read_lock_guard read_lock; |
28ab034a | 1349 | cds_list_for_each_entry (uid_reg, &usess->buffer_reg_uid_list, lnode) { |
b0f2e8db | 1350 | lsu::registry_session *registry; |
d7bfb9b0 JG |
1351 | |
1352 | session_reg = uid_reg->registry; | |
1353 | registry = session_reg->reg.ust; | |
1354 | ||
1355 | try { | |
1356 | registry->regenerate_metadata(); | |
1357 | } catch (const std::exception& ex) { | |
1358 | ERR("Failed to regenerate user space session metadata: %s", ex.what()); | |
1359 | ret = -1; | |
1360 | goto end; | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | end: | |
d7bfb9b0 JG |
1365 | return ret; |
1366 | } | |
1367 | ||
97ee3a89 | 1368 | /* |
f6a9efaa | 1369 | * Iterate over a hash table containing channels and cleanup safely. |
97ee3a89 | 1370 | */ |
bec39940 | 1371 | static void destroy_channels(struct lttng_ht *channels) |
f6a9efaa | 1372 | { |
bec39940 DG |
1373 | struct lttng_ht_node_str *node; |
1374 | struct lttng_ht_iter iter; | |
f6a9efaa | 1375 | |
a0377dfe | 1376 | LTTNG_ASSERT(channels); |
0525e9ae | 1377 | |
56047f5a JG |
1378 | { |
1379 | lttng::urcu::read_lock_guard read_lock; | |
1380 | ||
1381 | cds_lfht_for_each_entry (channels->ht, &iter.iter, node, node) { | |
1382 | struct ltt_ust_channel *chan = | |
1383 | lttng::utils::container_of(node, <t_ust_channel::node); | |
627cbbe7 | 1384 | |
56047f5a JG |
1385 | trace_ust_delete_channel(channels, chan); |
1386 | trace_ust_destroy_channel(chan); | |
1387 | } | |
f6a9efaa | 1388 | } |
ed52805d | 1389 | |
3c339053 | 1390 | lttng_ht_destroy(channels); |
f6a9efaa DG |
1391 | } |
1392 | ||
f6a9efaa DG |
1393 | /* |
1394 | * Cleanup UST global domain. | |
1395 | */ | |
1396 | static void destroy_domain_global(struct ltt_ust_domain_global *dom) | |
1397 | { | |
a0377dfe | 1398 | LTTNG_ASSERT(dom); |
0525e9ae | 1399 | |
f6a9efaa DG |
1400 | destroy_channels(dom->channels); |
1401 | } | |
97ee3a89 | 1402 | |
f6a9efaa | 1403 | /* |
d070c424 MD |
1404 | * Cleanup ust session structure, keeping data required by |
1405 | * destroy notifier. | |
f6a9efaa DG |
1406 | */ |
1407 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
1408 | { | |
fefd409b | 1409 | struct agent *agt; |
7972aab2 | 1410 | struct buffer_reg_uid *reg, *sreg; |
fefd409b | 1411 | struct lttng_ht_iter iter; |
7972aab2 | 1412 | |
a0377dfe | 1413 | LTTNG_ASSERT(session); |
97ee3a89 | 1414 | |
d9bf3ca4 | 1415 | DBG2("Trace UST destroy session %" PRIu64, session->id); |
f6a9efaa | 1416 | |
f6a9efaa DG |
1417 | /* Cleaning up UST domain */ |
1418 | destroy_domain_global(&session->domain_global); | |
fefd409b | 1419 | |
56047f5a JG |
1420 | { |
1421 | lttng::urcu::read_lock_guard read_lock; | |
1422 | ||
1423 | cds_lfht_for_each_entry (session->agents->ht, &iter.iter, agt, node.node) { | |
1424 | int ret = lttng_ht_del(session->agents, &iter); | |
d0edf546 | 1425 | |
56047f5a JG |
1426 | LTTNG_ASSERT(!ret); |
1427 | agent_destroy(agt); | |
1428 | } | |
fefd409b | 1429 | } |
7972aab2 | 1430 | |
3c339053 | 1431 | lttng_ht_destroy(session->agents); |
8ada2175 | 1432 | |
7972aab2 | 1433 | /* Cleanup UID buffer registry object(s). */ |
28ab034a | 1434 | cds_list_for_each_entry_safe (reg, sreg, &session->buffer_reg_uid_list, lnode) { |
7972aab2 DG |
1435 | cds_list_del(®->lnode); |
1436 | buffer_reg_uid_remove(reg); | |
1437 | buffer_reg_uid_destroy(reg, session->consumer); | |
1438 | } | |
44d3bd01 | 1439 | |
159b042f JG |
1440 | process_attr_tracker_destroy(session->tracker_vpid); |
1441 | process_attr_tracker_destroy(session->tracker_vuid); | |
1442 | process_attr_tracker_destroy(session->tracker_vgid); | |
55c9e7ca JR |
1443 | |
1444 | fini_id_tracker(&session->vpid_tracker); | |
1445 | fini_id_tracker(&session->vuid_tracker); | |
1446 | fini_id_tracker(&session->vgid_tracker); | |
82b69413 | 1447 | lttng_trace_chunk_put(session->current_trace_chunk); |
d070c424 MD |
1448 | } |
1449 | ||
1450 | /* Free elements needed by destroy notifiers. */ | |
1451 | void trace_ust_free_session(struct ltt_ust_session *session) | |
1452 | { | |
1453 | consumer_output_put(session->consumer); | |
97ee3a89 DG |
1454 | free(session); |
1455 | } |