Commit | Line | Data |
---|---|---|
97ee3a89 | 1 | /* |
ab5be9fa MJ |
2 | * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca> |
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 | |
990570ed DG |
16 | #include <common/common.h> |
17 | #include <common/defaults.h> | |
82b69413 | 18 | #include <common/trace-chunk.h> |
159b042f | 19 | #include <common/utils.h> |
97ee3a89 | 20 | |
c3e68e71 JR |
21 | #include <lttng/map-key-internal.h> |
22 | #include <lttng/map/map-internal.h> | |
23 | ||
7972aab2 | 24 | #include "buffer-registry.h" |
c3e68e71 | 25 | #include "map.h" |
97ee3a89 | 26 | #include "trace-ust.h" |
0b2dc8df | 27 | #include "utils.h" |
a9ad0c8f | 28 | #include "ust-app.h" |
7c1d2758 | 29 | #include "agent.h" |
97ee3a89 | 30 | |
025faf73 DG |
31 | /* |
32 | * Match function for the events hash table lookup. | |
33 | * | |
34 | * Matches by name only. Used by the disable command. | |
35 | */ | |
18eace3b DG |
36 | int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node, |
37 | const void *_key) | |
38 | { | |
39 | struct ltt_ust_event *event; | |
40 | const char *name; | |
41 | ||
42 | assert(node); | |
43 | assert(_key); | |
44 | ||
45 | event = caa_container_of(node, struct ltt_ust_event, node.node); | |
46 | name = _key; | |
47 | ||
48 | /* Event name */ | |
49 | if (strncmp(event->attr.name, name, sizeof(event->attr.name)) != 0) { | |
50 | goto no_match; | |
51 | } | |
52 | ||
025faf73 | 53 | /* Match */ |
18eace3b DG |
54 | return 1; |
55 | ||
56 | no_match: | |
57 | return 0; | |
58 | } | |
59 | ||
025faf73 DG |
60 | /* |
61 | * Match function for the hash table lookup. | |
62 | * | |
63 | * It matches an ust event based on three attributes which are the event name, | |
64 | * the filter bytecode and the loglevel. | |
65 | */ | |
18eace3b DG |
66 | int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key) |
67 | { | |
68 | struct ltt_ust_event *event; | |
69 | const struct ltt_ust_ht_key *key; | |
2106efa0 | 70 | int ev_loglevel_value; |
19a97244 | 71 | int ll_match; |
18eace3b DG |
72 | |
73 | assert(node); | |
74 | assert(_key); | |
75 | ||
76 | event = caa_container_of(node, struct ltt_ust_event, node.node); | |
77 | key = _key; | |
2106efa0 | 78 | ev_loglevel_value = event->attr.loglevel; |
18eace3b | 79 | |
c3e68e71 JR |
80 | /* Match the 6 elements of the key: tracer_token, map_key, name, filter, loglevel, exclusions. */ |
81 | if (event->attr.token != key->tracer_token) { | |
82 | goto no_match; | |
83 | } | |
84 | ||
85 | if (!lttng_map_key_is_equal(event->key, key->key)) { | |
86 | goto no_match; | |
87 | } | |
18eace3b DG |
88 | |
89 | /* Event name */ | |
90 | if (strncmp(event->attr.name, key->name, sizeof(event->attr.name)) != 0) { | |
18eace3b DG |
91 | goto no_match; |
92 | } | |
93 | ||
b953b8cd | 94 | /* Event loglevel value and type. */ |
19a97244 PP |
95 | ll_match = loglevels_match(event->attr.loglevel_type, |
96 | ev_loglevel_value, key->loglevel_type, | |
97 | key->loglevel_value, LTTNG_UST_LOGLEVEL_ALL); | |
98 | ||
99 | if (!ll_match) { | |
b953b8cd | 100 | goto no_match; |
18eace3b DG |
101 | } |
102 | ||
103 | /* Only one of the filters is NULL, fail. */ | |
104 | if ((key->filter && !event->filter) || (!key->filter && event->filter)) { | |
18eace3b DG |
105 | goto no_match; |
106 | } | |
107 | ||
025faf73 DG |
108 | if (key->filter && event->filter) { |
109 | /* Both filters exists, check length followed by the bytecode. */ | |
110 | if (event->filter->len != key->filter->len || | |
111 | memcmp(event->filter->data, key->filter->data, | |
112 | event->filter->len) != 0) { | |
113 | goto no_match; | |
114 | } | |
18eace3b DG |
115 | } |
116 | ||
f19e9f8b JI |
117 | /* If only one of the exclusions is NULL, fail. */ |
118 | if ((key->exclusion && !event->exclusion) || (!key->exclusion && event->exclusion)) { | |
119 | goto no_match; | |
120 | } | |
121 | ||
122 | if (key->exclusion && event->exclusion) { | |
a5b7e00c PP |
123 | size_t i; |
124 | ||
125 | /* Check exclusion counts first. */ | |
126 | if (event->exclusion->count != key->exclusion->count) { | |
f19e9f8b JI |
127 | goto no_match; |
128 | } | |
a5b7e00c PP |
129 | |
130 | /* Compare names individually. */ | |
131 | for (i = 0; i < event->exclusion->count; ++i) { | |
132 | size_t j; | |
133 | bool found = false; | |
134 | const char *name_ev = | |
135 | LTTNG_EVENT_EXCLUSION_NAME_AT( | |
136 | event->exclusion, i); | |
137 | ||
138 | /* | |
139 | * Compare this exclusion name to all the key's | |
140 | * exclusion names. | |
141 | */ | |
142 | for (j = 0; j < key->exclusion->count; ++j) { | |
143 | const char *name_key = | |
144 | LTTNG_EVENT_EXCLUSION_NAME_AT( | |
145 | key->exclusion, j); | |
146 | ||
147 | if (!strncmp(name_ev, name_key, | |
148 | LTTNG_SYMBOL_NAME_LEN)) { | |
149 | /* Names match! */ | |
150 | found = true; | |
151 | break; | |
152 | } | |
153 | } | |
154 | ||
155 | /* | |
156 | * If the current exclusion name was not found amongst | |
157 | * the key's exclusion names, then there's no match. | |
158 | */ | |
159 | if (!found) { | |
160 | goto no_match; | |
161 | } | |
162 | } | |
f19e9f8b | 163 | } |
025faf73 DG |
164 | /* Match. */ |
165 | return 1; | |
18eace3b DG |
166 | |
167 | no_match: | |
168 | return 0; | |
18eace3b DG |
169 | } |
170 | ||
0177d773 | 171 | /* |
2223c96f DG |
172 | * Find the channel in the hashtable and return channel pointer. RCU read side |
173 | * lock MUST be acquired before calling this. | |
0177d773 | 174 | */ |
bec39940 | 175 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, |
df4f5a87 | 176 | const char *name) |
0177d773 | 177 | { |
bec39940 DG |
178 | struct lttng_ht_node_str *node; |
179 | struct lttng_ht_iter iter; | |
0177d773 | 180 | |
85076754 MD |
181 | /* |
182 | * If we receive an empty string for channel name, it means the | |
183 | * default channel name is requested. | |
184 | */ | |
185 | if (name[0] == '\0') | |
186 | name = DEFAULT_CHANNEL_NAME; | |
187 | ||
bec39940 DG |
188 | lttng_ht_lookup(ht, (void *)name, &iter); |
189 | node = lttng_ht_iter_get_node_str(&iter); | |
f6a9efaa | 190 | if (node == NULL) { |
44d3bd01 DG |
191 | goto error; |
192 | } | |
193 | ||
f6a9efaa | 194 | DBG2("Trace UST channel %s found by name", name); |
0177d773 | 195 | |
f6a9efaa | 196 | return caa_container_of(node, struct ltt_ust_channel, node); |
97ee3a89 DG |
197 | |
198 | error: | |
f6a9efaa | 199 | DBG2("Trace UST channel %s not found by name", name); |
97ee3a89 DG |
200 | return NULL; |
201 | } | |
202 | ||
c3e68e71 JR |
203 | /* |
204 | * Find the map in the hashtable and return map pointer. RCU read side | |
205 | * lock MUST be acquired before calling this. | |
206 | */ | |
207 | struct ltt_ust_map *trace_ust_find_map_by_name(struct lttng_ht *ht, | |
208 | const char *name) | |
209 | { | |
210 | struct lttng_ht_node_str *node; | |
211 | struct lttng_ht_iter iter; | |
212 | ||
213 | if (name[0] == '\0') { | |
214 | goto error; | |
215 | } | |
216 | ||
217 | lttng_ht_lookup(ht, (void *)name, &iter); | |
218 | node = lttng_ht_iter_get_node_str(&iter); | |
219 | if (node == NULL) { | |
220 | goto error; | |
221 | } | |
222 | ||
223 | DBG2("Trace UST map %s found by name", name); | |
224 | ||
225 | return caa_container_of(node, struct ltt_ust_map, node); | |
226 | ||
227 | error: | |
228 | DBG2("Trace UST map %s not found by name", name); | |
229 | return NULL; | |
230 | } | |
231 | ||
97ee3a89 | 232 | /* |
2223c96f DG |
233 | * Find the event in the hashtable and return event pointer. RCU read side lock |
234 | * MUST be acquired before calling this. | |
97ee3a89 | 235 | */ |
18eace3b | 236 | struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht, |
c3e68e71 | 237 | uint64_t tracer_token, char *name, struct lttng_bytecode *filter, |
b953b8cd | 238 | enum lttng_ust_loglevel_type loglevel_type, int loglevel_value, |
c3e68e71 JR |
239 | struct lttng_event_exclusion *exclusion, |
240 | struct lttng_map_key *map_key) | |
97ee3a89 | 241 | { |
bec39940 DG |
242 | struct lttng_ht_node_str *node; |
243 | struct lttng_ht_iter iter; | |
18eace3b | 244 | struct ltt_ust_ht_key key; |
97ee3a89 | 245 | |
18eace3b DG |
246 | assert(name); |
247 | assert(ht); | |
248 | ||
c3e68e71 | 249 | key.tracer_token = tracer_token; |
18eace3b DG |
250 | key.name = name; |
251 | key.filter = filter; | |
b953b8cd PP |
252 | key.loglevel_type = loglevel_type; |
253 | key.loglevel_value = loglevel_value; | |
10646003 | 254 | key.exclusion = exclusion; |
c3e68e71 | 255 | key.key = map_key; |
18eace3b | 256 | |
18eace3b DG |
257 | cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed), |
258 | trace_ust_ht_match_event, &key, &iter.iter); | |
bec39940 | 259 | node = lttng_ht_iter_get_node_str(&iter); |
f6a9efaa | 260 | if (node == NULL) { |
97ee3a89 DG |
261 | goto error; |
262 | } | |
263 | ||
18eace3b | 264 | DBG2("Trace UST event %s found", key.name); |
f6a9efaa DG |
265 | |
266 | return caa_container_of(node, struct ltt_ust_event, node); | |
97ee3a89 DG |
267 | |
268 | error: | |
18eace3b | 269 | DBG2("Trace UST event %s NOT found", key.name); |
97ee3a89 DG |
270 | return NULL; |
271 | } | |
272 | ||
fefd409b DG |
273 | /* |
274 | * Lookup an agent in the session agents hash table by domain type and return | |
275 | * the object if found else NULL. | |
4da703ad JG |
276 | * |
277 | * RCU read side lock must be acquired before calling and only released | |
278 | * once the agent is no longer in scope or being used. | |
fefd409b DG |
279 | */ |
280 | struct agent *trace_ust_find_agent(struct ltt_ust_session *session, | |
281 | enum lttng_domain_type domain_type) | |
282 | { | |
283 | struct agent *agt = NULL; | |
284 | struct lttng_ht_node_u64 *node; | |
285 | struct lttng_ht_iter iter; | |
286 | uint64_t key; | |
287 | ||
288 | assert(session); | |
289 | ||
290 | DBG3("Trace ust agent lookup for domain %d", domain_type); | |
291 | ||
292 | key = domain_type; | |
293 | ||
294 | lttng_ht_lookup(session->agents, &key, &iter); | |
295 | node = lttng_ht_iter_get_node_u64(&iter); | |
296 | if (!node) { | |
297 | goto end; | |
298 | } | |
299 | agt = caa_container_of(node, struct agent, node); | |
300 | ||
301 | end: | |
302 | return agt; | |
303 | } | |
304 | ||
97ee3a89 DG |
305 | /* |
306 | * Allocate and initialize a ust session data structure. | |
307 | * | |
308 | * Return pointer to structure or NULL. | |
309 | */ | |
d9bf3ca4 | 310 | struct ltt_ust_session *trace_ust_create_session(uint64_t session_id) |
97ee3a89 DG |
311 | { |
312 | struct ltt_ust_session *lus; | |
313 | ||
314 | /* Allocate a new ltt ust session */ | |
ba7f0ae5 | 315 | lus = zmalloc(sizeof(struct ltt_ust_session)); |
97ee3a89 | 316 | if (lus == NULL) { |
ba7f0ae5 | 317 | PERROR("create ust session zmalloc"); |
55c9e7ca | 318 | goto error_alloc; |
97ee3a89 DG |
319 | } |
320 | ||
321 | /* Init data structure */ | |
a991f516 | 322 | lus->id = session_id; |
14fb1ebe | 323 | lus->active = 0; |
97ee3a89 | 324 | |
84ad93e8 DG |
325 | /* Set default metadata channel attribute. */ |
326 | lus->metadata_attr.overwrite = DEFAULT_CHANNEL_OVERWRITE; | |
327 | lus->metadata_attr.subbuf_size = default_get_metadata_subbuf_size(); | |
328 | lus->metadata_attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM; | |
329 | lus->metadata_attr.switch_timer_interval = DEFAULT_METADATA_SWITCH_TIMER; | |
330 | lus->metadata_attr.read_timer_interval = DEFAULT_METADATA_READ_TIMER; | |
331 | lus->metadata_attr.output = LTTNG_UST_MMAP; | |
332 | ||
7972aab2 DG |
333 | /* |
334 | * Default buffer type. This can be changed through an enable channel | |
335 | * requesting a different type. Note that this can only be changed once | |
336 | * during the session lifetime which is at the first enable channel and | |
337 | * only before start. The flag buffer_type_changed indicates the status. | |
338 | */ | |
8692d4e5 | 339 | lus->buffer_type = LTTNG_BUFFER_PER_UID; |
7972aab2 DG |
340 | /* Once set to 1, the buffer_type is immutable for the session. */ |
341 | lus->buffer_type_changed = 0; | |
342 | /* Init it in case it get used after allocation. */ | |
343 | CDS_INIT_LIST_HEAD(&lus->buffer_reg_uid_list); | |
f6a9efaa DG |
344 | |
345 | /* Alloc UST global domain channels' HT */ | |
bec39940 | 346 | lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
c3e68e71 JR |
347 | /* Alloc UST global domain maps' HT */ |
348 | lus->domain_global.maps = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); | |
fefd409b DG |
349 | /* Alloc agent hash table. */ |
350 | lus->agents = lttng_ht_new(0, LTTNG_HT_TYPE_U64); | |
44d3bd01 | 351 | |
159b042f JG |
352 | lus->tracker_vpid = process_attr_tracker_create(); |
353 | if (!lus->tracker_vpid) { | |
55c9e7ca JR |
354 | goto error; |
355 | } | |
159b042f JG |
356 | lus->tracker_vuid = process_attr_tracker_create(); |
357 | if (!lus->tracker_vuid) { | |
55c9e7ca JR |
358 | goto error; |
359 | } | |
159b042f JG |
360 | lus->tracker_vgid = process_attr_tracker_create(); |
361 | if (!lus->tracker_vgid) { | |
55c9e7ca JR |
362 | goto error; |
363 | } | |
00e2e675 DG |
364 | lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL); |
365 | if (lus->consumer == NULL) { | |
55c9e7ca | 366 | goto error; |
00e2e675 DG |
367 | } |
368 | ||
44d3bd01 DG |
369 | DBG2("UST trace session create successful"); |
370 | ||
97ee3a89 DG |
371 | return lus; |
372 | ||
55c9e7ca | 373 | error: |
159b042f JG |
374 | process_attr_tracker_destroy(lus->tracker_vpid); |
375 | process_attr_tracker_destroy(lus->tracker_vuid); | |
376 | process_attr_tracker_destroy(lus->tracker_vgid); | |
0b2dc8df | 377 | ht_cleanup_push(lus->domain_global.channels); |
c3e68e71 | 378 | ht_cleanup_push(lus->domain_global.maps); |
fefd409b | 379 | ht_cleanup_push(lus->agents); |
44844c29 | 380 | free(lus); |
55c9e7ca | 381 | error_alloc: |
97ee3a89 DG |
382 | return NULL; |
383 | } | |
384 | ||
385 | /* | |
386 | * Allocate and initialize a ust channel data structure. | |
387 | * | |
388 | * Return pointer to structure or NULL. | |
389 | */ | |
51755dc8 JG |
390 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan, |
391 | enum lttng_domain_type domain) | |
97ee3a89 | 392 | { |
97ee3a89 DG |
393 | struct ltt_ust_channel *luc; |
394 | ||
0525e9ae | 395 | assert(chan); |
0525e9ae | 396 | |
37357452 | 397 | luc = zmalloc(sizeof(struct ltt_ust_channel)); |
97ee3a89 | 398 | if (luc == NULL) { |
df0f840b | 399 | PERROR("ltt_ust_channel zmalloc"); |
97ee3a89 DG |
400 | goto error; |
401 | } | |
402 | ||
51755dc8 JG |
403 | luc->domain = domain; |
404 | ||
44d3bd01 | 405 | /* Copy UST channel attributes */ |
48842b30 DG |
406 | luc->attr.overwrite = chan->attr.overwrite; |
407 | luc->attr.subbuf_size = chan->attr.subbuf_size; | |
408 | luc->attr.num_subbuf = chan->attr.num_subbuf; | |
409 | luc->attr.switch_timer_interval = chan->attr.switch_timer_interval; | |
410 | luc->attr.read_timer_interval = chan->attr.read_timer_interval; | |
6775595e | 411 | luc->attr.output = (enum lttng_ust_output) chan->attr.output; |
82b4ebce JG |
412 | luc->monitor_timer_interval = ((struct lttng_channel_extended *) |
413 | chan->attr.extended.ptr)->monitor_timer_interval; | |
491d1539 MD |
414 | luc->attr.u.s.blocking_timeout = ((struct lttng_channel_extended *) |
415 | chan->attr.extended.ptr)->blocking_timeout; | |
44d3bd01 DG |
416 | |
417 | /* Translate to UST output enum */ | |
418 | switch (luc->attr.output) { | |
419 | default: | |
420 | luc->attr.output = LTTNG_UST_MMAP; | |
421 | break; | |
97ee3a89 | 422 | } |
97ee3a89 | 423 | |
85076754 MD |
424 | /* |
425 | * If we receive an empty string for channel name, it means the | |
426 | * default channel name is requested. | |
427 | */ | |
428 | if (chan->name[0] == '\0') { | |
429 | strncpy(luc->name, DEFAULT_CHANNEL_NAME, sizeof(luc->name)); | |
430 | } else { | |
431 | /* Copy channel name */ | |
432 | strncpy(luc->name, chan->name, sizeof(luc->name)); | |
433 | } | |
97ee3a89 DG |
434 | luc->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; |
435 | ||
f6a9efaa | 436 | /* Init node */ |
bec39940 | 437 | lttng_ht_node_init_str(&luc->node, luc->name); |
31746f93 DG |
438 | CDS_INIT_LIST_HEAD(&luc->ctx_list); |
439 | ||
f6a9efaa | 440 | /* Alloc hash tables */ |
bec39940 DG |
441 | luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
442 | luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
f6a9efaa | 443 | |
1624d5b7 JD |
444 | /* On-disk circular buffer parameters */ |
445 | luc->tracefile_size = chan->attr.tracefile_size; | |
446 | luc->tracefile_count = chan->attr.tracefile_count; | |
447 | ||
f6a9efaa DG |
448 | DBG2("Trace UST channel %s created", luc->name); |
449 | ||
97ee3a89 | 450 | error: |
7972aab2 | 451 | return luc; |
97ee3a89 DG |
452 | } |
453 | ||
c3e68e71 JR |
454 | /* |
455 | * Allocate and initialize a ust map data structure. | |
456 | * | |
457 | * Return pointer to structure or NULL. | |
458 | */ | |
459 | struct ltt_ust_map *trace_ust_create_map(const struct lttng_map *map) | |
460 | { | |
461 | struct ltt_ust_map *umap = NULL; | |
462 | enum lttng_map_status map_status; | |
463 | const char *map_name = NULL; | |
464 | unsigned int dimension_count; | |
465 | uint64_t dimension_len; | |
466 | ||
467 | umap = zmalloc(sizeof(*umap)); | |
468 | if (!umap) { | |
469 | PERROR("ltt_ust_map zmalloc"); | |
470 | goto end; | |
471 | } | |
472 | ||
473 | map_status = lttng_map_get_name(map, &map_name); | |
474 | if (map_status != LTTNG_MAP_STATUS_OK) { | |
475 | ERR("Can't get map name"); | |
476 | umap = NULL; | |
477 | goto end; | |
478 | } | |
479 | ||
480 | dimension_count = lttng_map_get_dimension_count(map); | |
481 | assert(dimension_count == 1); | |
482 | ||
483 | map_status = lttng_map_get_dimension_length(map, 0, &dimension_len); | |
484 | if (map_status != LTTNG_MAP_STATUS_OK) { | |
485 | ERR("Can't get map first dimension length"); | |
486 | umap = NULL; | |
487 | goto end; | |
488 | } | |
489 | assert(dimension_len > 0); | |
490 | ||
491 | strncpy(umap->name, map_name, sizeof(umap->name)); | |
492 | ||
493 | umap->enabled = 1; | |
494 | umap->bucket_count = dimension_len; | |
495 | umap->coalesce_hits = lttng_map_get_coalesce_hits(map); | |
496 | umap->bitness = lttng_map_get_bitness(map); | |
497 | umap->nr_cpu = ustctl_get_nr_cpu_per_counter(); | |
498 | ||
499 | umap->dead_app_kv_values.dead_app_kv_values_32bits = lttng_ht_new(0, | |
500 | LTTNG_HT_TYPE_STRING); | |
501 | umap->dead_app_kv_values.dead_app_kv_values_64bits = lttng_ht_new(0, | |
502 | LTTNG_HT_TYPE_STRING); | |
503 | pthread_mutex_init(&umap->dead_app_kv_values.lock, NULL); | |
504 | ||
505 | umap->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); | |
506 | ||
507 | /* Init node */ | |
508 | lttng_ht_node_init_str(&umap->node, umap->name); | |
509 | ||
510 | DBG2("Trace UST map %s created", umap->name); | |
511 | end: | |
512 | return umap; | |
513 | } | |
514 | ||
ad11a1d3 PP |
515 | /* |
516 | * Validates an exclusion list. | |
517 | * | |
518 | * Returns 0 if valid, negative value if invalid. | |
519 | */ | |
520 | static int validate_exclusion(struct lttng_event_exclusion *exclusion) | |
521 | { | |
522 | size_t i; | |
523 | int ret = 0; | |
524 | ||
525 | assert(exclusion); | |
526 | ||
527 | for (i = 0; i < exclusion->count; ++i) { | |
528 | size_t j; | |
529 | const char *name_a = | |
530 | LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, i); | |
531 | ||
532 | for (j = 0; j < i; ++j) { | |
533 | const char *name_b = | |
534 | LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, j); | |
535 | ||
536 | if (!strncmp(name_a, name_b, LTTNG_SYMBOL_NAME_LEN)) { | |
537 | /* Match! */ | |
538 | ret = -1; | |
539 | goto end; | |
540 | } | |
541 | } | |
542 | } | |
543 | ||
544 | end: | |
545 | return ret; | |
546 | } | |
547 | ||
97ee3a89 DG |
548 | /* |
549 | * Allocate and initialize a ust event. Set name and event type. | |
49d21f93 | 550 | * We own filter_expression, filter, and exclusion. |
97ee3a89 | 551 | * |
39687410 | 552 | * Return an lttng_error_code |
97ee3a89 | 553 | */ |
c3e68e71 JR |
554 | enum lttng_error_code trace_ust_create_event(uint64_t tracer_token, |
555 | const char *ev_name, | |
556 | struct lttng_map_key *key, | |
557 | enum lttng_event_type ev_type, | |
558 | enum lttng_loglevel_type ev_loglevel_type, | |
559 | enum lttng_loglevel ev_loglevel, | |
6b453b5e | 560 | char *filter_expression, |
2b00d462 | 561 | struct lttng_bytecode *filter, |
88f06f15 | 562 | struct lttng_event_exclusion *exclusion, |
39687410 FD |
563 | bool internal_event, |
564 | struct ltt_ust_event **ust_event) | |
97ee3a89 | 565 | { |
39687410 FD |
566 | struct ltt_ust_event *local_ust_event; |
567 | enum lttng_error_code ret = LTTNG_OK; | |
97ee3a89 | 568 | |
ad11a1d3 | 569 | if (exclusion && validate_exclusion(exclusion)) { |
39687410 | 570 | ret = LTTNG_ERR_INVALID; |
ad11a1d3 PP |
571 | goto error; |
572 | } | |
573 | ||
39687410 FD |
574 | local_ust_event = zmalloc(sizeof(struct ltt_ust_event)); |
575 | if (local_ust_event == NULL) { | |
ba7f0ae5 | 576 | PERROR("ust event zmalloc"); |
39687410 | 577 | ret = LTTNG_ERR_NOMEM; |
97ee3a89 DG |
578 | goto error; |
579 | } | |
580 | ||
39687410 | 581 | local_ust_event->internal = internal_event; |
c3e68e71 | 582 | local_ust_event->attr.token = tracer_token; |
88f06f15 | 583 | |
c3e68e71 | 584 | switch (ev_type) { |
97ee3a89 | 585 | case LTTNG_EVENT_PROBE: |
39687410 | 586 | local_ust_event->attr.instrumentation = LTTNG_UST_PROBE; |
97ee3a89 DG |
587 | break; |
588 | case LTTNG_EVENT_FUNCTION: | |
39687410 | 589 | local_ust_event->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
590 | break; |
591 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
39687410 | 592 | local_ust_event->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
593 | break; |
594 | case LTTNG_EVENT_TRACEPOINT: | |
39687410 | 595 | local_ust_event->attr.instrumentation = LTTNG_UST_TRACEPOINT; |
97ee3a89 DG |
596 | break; |
597 | default: | |
c3e68e71 | 598 | ERR("Unknown ust instrumentation type (%d)", ev_type); |
39687410 | 599 | ret = LTTNG_ERR_INVALID; |
44844c29 | 600 | goto error_free_event; |
97ee3a89 DG |
601 | } |
602 | ||
603 | /* Copy event name */ | |
c3e68e71 | 604 | strncpy(local_ust_event->attr.name, ev_name, LTTNG_UST_SYM_NAME_LEN); |
39687410 | 605 | local_ust_event->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; |
97ee3a89 | 606 | |
c3e68e71 | 607 | switch (ev_loglevel_type) { |
8005f29a | 608 | case LTTNG_EVENT_LOGLEVEL_ALL: |
39687410 FD |
609 | local_ust_event->attr.loglevel_type = LTTNG_UST_LOGLEVEL_ALL; |
610 | local_ust_event->attr.loglevel = -1; /* Force to -1 */ | |
0cda4f28 | 611 | break; |
8005f29a | 612 | case LTTNG_EVENT_LOGLEVEL_RANGE: |
39687410 | 613 | local_ust_event->attr.loglevel_type = LTTNG_UST_LOGLEVEL_RANGE; |
c3e68e71 | 614 | local_ust_event->attr.loglevel = ev_loglevel; |
8005f29a MD |
615 | break; |
616 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
39687410 | 617 | local_ust_event->attr.loglevel_type = LTTNG_UST_LOGLEVEL_SINGLE; |
c3e68e71 | 618 | local_ust_event->attr.loglevel = ev_loglevel; |
0cda4f28 MD |
619 | break; |
620 | default: | |
c3e68e71 | 621 | ERR("Unknown ust loglevel type (%d)", ev_loglevel_type); |
39687410 | 622 | ret = LTTNG_ERR_INVALID; |
0cda4f28 MD |
623 | goto error_free_event; |
624 | } | |
625 | ||
025faf73 | 626 | /* Same layout. */ |
c3e68e71 | 627 | local_ust_event->key = key; |
39687410 FD |
628 | local_ust_event->filter_expression = filter_expression; |
629 | local_ust_event->filter = filter; | |
630 | local_ust_event->exclusion = exclusion; | |
0cda4f28 | 631 | |
c3e68e71 JR |
632 | /* Take a reference on the lttng_map_key to bounds its lifetime to the |
633 | * ust_event. | |
634 | */ | |
635 | if (key) { | |
636 | lttng_map_key_get(key); | |
637 | } | |
638 | ||
f6a9efaa | 639 | /* Init node */ |
39687410 | 640 | lttng_ht_node_init_str(&local_ust_event->node, local_ust_event->attr.name); |
97ee3a89 | 641 | |
c3e68e71 JR |
642 | DBG2("Trace UST event %s, tracer token %"PRIu64", loglevel (%d,%d) created", |
643 | local_ust_event->attr.name, local_ust_event->attr.token, | |
644 | local_ust_event->attr.loglevel_type, | |
39687410 FD |
645 | local_ust_event->attr.loglevel); |
646 | ||
647 | *ust_event = local_ust_event; | |
284d8f55 | 648 | |
39687410 | 649 | return ret; |
97ee3a89 | 650 | |
44844c29 | 651 | error_free_event: |
39687410 | 652 | free(local_ust_event); |
97ee3a89 | 653 | error: |
49d21f93 MD |
654 | free(filter_expression); |
655 | free(filter); | |
656 | free(exclusion); | |
39687410 | 657 | return ret; |
97ee3a89 DG |
658 | } |
659 | ||
aa3514e9 | 660 | static |
bdf64013 JG |
661 | int trace_ust_context_type_event_to_ust( |
662 | enum lttng_event_context_type type) | |
55cc08a6 | 663 | { |
aa3514e9 | 664 | int utype; |
0525e9ae | 665 | |
aa3514e9 | 666 | switch (type) { |
9197c5c4 MD |
667 | case LTTNG_EVENT_CONTEXT_VTID: |
668 | utype = LTTNG_UST_CONTEXT_VTID; | |
669 | break; | |
670 | case LTTNG_EVENT_CONTEXT_VPID: | |
671 | utype = LTTNG_UST_CONTEXT_VPID; | |
672 | break; | |
673 | case LTTNG_EVENT_CONTEXT_PTHREAD_ID: | |
674 | utype = LTTNG_UST_CONTEXT_PTHREAD_ID; | |
675 | break; | |
676 | case LTTNG_EVENT_CONTEXT_PROCNAME: | |
677 | utype = LTTNG_UST_CONTEXT_PROCNAME; | |
678 | break; | |
7c612c2e WP |
679 | case LTTNG_EVENT_CONTEXT_IP: |
680 | utype = LTTNG_UST_CONTEXT_IP; | |
681 | break; | |
aa3514e9 | 682 | case LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER: |
354e561b MD |
683 | if (!ustctl_has_perf_counters()) { |
684 | utype = -1; | |
685 | WARN("Perf counters not implemented in UST"); | |
686 | } else { | |
687 | utype = LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER; | |
688 | } | |
aa3514e9 | 689 | break; |
bdf64013 JG |
690 | case LTTNG_EVENT_CONTEXT_APP_CONTEXT: |
691 | utype = LTTNG_UST_CONTEXT_APP_CONTEXT; | |
692 | break; | |
f17b8732 MJ |
693 | case LTTNG_EVENT_CONTEXT_CGROUP_NS: |
694 | utype = LTTNG_UST_CONTEXT_CGROUP_NS; | |
695 | break; | |
696 | case LTTNG_EVENT_CONTEXT_IPC_NS: | |
697 | utype = LTTNG_UST_CONTEXT_IPC_NS; | |
698 | break; | |
699 | case LTTNG_EVENT_CONTEXT_MNT_NS: | |
700 | utype = LTTNG_UST_CONTEXT_MNT_NS; | |
701 | break; | |
702 | case LTTNG_EVENT_CONTEXT_NET_NS: | |
703 | utype = LTTNG_UST_CONTEXT_NET_NS; | |
704 | break; | |
705 | case LTTNG_EVENT_CONTEXT_PID_NS: | |
706 | utype = LTTNG_UST_CONTEXT_PID_NS; | |
707 | break; | |
d37ac3cd MJ |
708 | case LTTNG_EVENT_CONTEXT_TIME_NS: |
709 | utype = LTTNG_UST_CONTEXT_TIME_NS; | |
710 | break; | |
f17b8732 MJ |
711 | case LTTNG_EVENT_CONTEXT_USER_NS: |
712 | utype = LTTNG_UST_CONTEXT_USER_NS; | |
713 | break; | |
714 | case LTTNG_EVENT_CONTEXT_UTS_NS: | |
715 | utype = LTTNG_UST_CONTEXT_UTS_NS; | |
716 | break; | |
4fc59cb8 MJ |
717 | case LTTNG_EVENT_CONTEXT_VUID: |
718 | utype = LTTNG_UST_CONTEXT_VUID; | |
719 | break; | |
720 | case LTTNG_EVENT_CONTEXT_VEUID: | |
721 | utype = LTTNG_UST_CONTEXT_VEUID; | |
722 | break; | |
723 | case LTTNG_EVENT_CONTEXT_VSUID: | |
724 | utype = LTTNG_UST_CONTEXT_VSUID; | |
725 | break; | |
726 | case LTTNG_EVENT_CONTEXT_VGID: | |
727 | utype = LTTNG_UST_CONTEXT_VGID; | |
728 | break; | |
729 | case LTTNG_EVENT_CONTEXT_VEGID: | |
730 | utype = LTTNG_UST_CONTEXT_VEGID; | |
731 | break; | |
732 | case LTTNG_EVENT_CONTEXT_VSGID: | |
733 | utype = LTTNG_UST_CONTEXT_VSGID; | |
734 | break; | |
9197c5c4 | 735 | default: |
aa3514e9 MD |
736 | utype = -1; |
737 | break; | |
738 | } | |
739 | return utype; | |
740 | } | |
741 | ||
742 | /* | |
743 | * Return 1 if contexts match, 0 otherwise. | |
744 | */ | |
df4f5a87 JG |
745 | int trace_ust_match_context(const struct ltt_ust_context *uctx, |
746 | const struct lttng_event_context *ctx) | |
aa3514e9 MD |
747 | { |
748 | int utype; | |
749 | ||
750 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
751 | if (utype < 0) { | |
752 | return 0; | |
753 | } | |
754 | if (uctx->ctx.ctx != utype) { | |
755 | return 0; | |
756 | } | |
757 | switch (utype) { | |
758 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
759 | if (uctx->ctx.u.perf_counter.type | |
760 | != ctx->u.perf_counter.type) { | |
761 | return 0; | |
762 | } | |
763 | if (uctx->ctx.u.perf_counter.config | |
764 | != ctx->u.perf_counter.config) { | |
765 | return 0; | |
766 | } | |
767 | if (strncmp(uctx->ctx.u.perf_counter.name, | |
768 | ctx->u.perf_counter.name, | |
769 | LTTNG_UST_SYM_NAME_LEN)) { | |
770 | return 0; | |
771 | } | |
772 | break; | |
54fb33cf JG |
773 | case LTTNG_UST_CONTEXT_APP_CONTEXT: |
774 | assert(uctx->ctx.u.app_ctx.provider_name); | |
775 | assert(uctx->ctx.u.app_ctx.ctx_name); | |
776 | if (strcmp(uctx->ctx.u.app_ctx.provider_name, | |
777 | ctx->u.app_ctx.provider_name) || | |
778 | strcmp(uctx->ctx.u.app_ctx.ctx_name, | |
779 | ctx->u.app_ctx.ctx_name)) { | |
780 | return 0; | |
781 | } | |
aa3514e9 MD |
782 | default: |
783 | break; | |
784 | ||
785 | } | |
786 | return 1; | |
787 | } | |
788 | ||
789 | /* | |
790 | * Allocate and initialize an UST context. | |
791 | * | |
792 | * Return pointer to structure or NULL. | |
793 | */ | |
794 | struct ltt_ust_context *trace_ust_create_context( | |
df4f5a87 | 795 | const struct lttng_event_context *ctx) |
aa3514e9 | 796 | { |
bdf64013 | 797 | struct ltt_ust_context *uctx = NULL; |
aa3514e9 MD |
798 | int utype; |
799 | ||
800 | assert(ctx); | |
801 | ||
802 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
803 | if (utype < 0) { | |
1cf992b8 | 804 | ERR("Invalid UST context"); |
bdf64013 | 805 | goto end; |
9197c5c4 | 806 | } |
55cc08a6 DG |
807 | |
808 | uctx = zmalloc(sizeof(struct ltt_ust_context)); | |
bdf64013 | 809 | if (!uctx) { |
55cc08a6 | 810 | PERROR("zmalloc ltt_ust_context"); |
bdf64013 | 811 | goto end; |
55cc08a6 DG |
812 | } |
813 | ||
aa3514e9 MD |
814 | uctx->ctx.ctx = (enum lttng_ust_context_type) utype; |
815 | switch (utype) { | |
816 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
817 | uctx->ctx.u.perf_counter.type = ctx->u.perf_counter.type; | |
818 | uctx->ctx.u.perf_counter.config = ctx->u.perf_counter.config; | |
819 | strncpy(uctx->ctx.u.perf_counter.name, ctx->u.perf_counter.name, | |
820 | LTTNG_UST_SYM_NAME_LEN); | |
821 | uctx->ctx.u.perf_counter.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
822 | break; | |
bdf64013 JG |
823 | case LTTNG_UST_CONTEXT_APP_CONTEXT: |
824 | { | |
825 | char *provider_name = NULL, *ctx_name = NULL; | |
826 | ||
827 | provider_name = strdup(ctx->u.app_ctx.provider_name); | |
828 | if (!provider_name) { | |
829 | goto error; | |
830 | } | |
831 | uctx->ctx.u.app_ctx.provider_name = provider_name; | |
832 | ||
833 | ctx_name = strdup(ctx->u.app_ctx.ctx_name); | |
834 | if (!ctx_name) { | |
835 | goto error; | |
836 | } | |
837 | uctx->ctx.u.app_ctx.ctx_name = ctx_name; | |
838 | break; | |
839 | } | |
aa3514e9 MD |
840 | default: |
841 | break; | |
842 | } | |
bec39940 | 843 | lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx); |
bdf64013 | 844 | end: |
55cc08a6 | 845 | return uctx; |
55cc08a6 | 846 | error: |
bdf64013 | 847 | trace_ust_destroy_context(uctx); |
55cc08a6 DG |
848 | return NULL; |
849 | } | |
850 | ||
55c9e7ca | 851 | static void destroy_id_tracker_node_rcu(struct rcu_head *head) |
a9ad0c8f | 852 | { |
55c9e7ca JR |
853 | struct ust_id_tracker_node *tracker_node = caa_container_of( |
854 | head, struct ust_id_tracker_node, node.head); | |
a9ad0c8f MD |
855 | free(tracker_node); |
856 | } | |
857 | ||
55c9e7ca | 858 | static void destroy_id_tracker_node(struct ust_id_tracker_node *tracker_node) |
a9ad0c8f | 859 | { |
55c9e7ca | 860 | call_rcu(&tracker_node->node.head, destroy_id_tracker_node_rcu); |
a9ad0c8f MD |
861 | } |
862 | ||
55c9e7ca | 863 | static int init_id_tracker(struct ust_id_tracker *id_tracker) |
a9ad0c8f | 864 | { |
55c9e7ca | 865 | int ret = LTTNG_OK; |
a9ad0c8f | 866 | |
55c9e7ca JR |
867 | id_tracker->ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); |
868 | if (!id_tracker->ht) { | |
869 | ret = LTTNG_ERR_NOMEM; | |
a9ad0c8f MD |
870 | goto end; |
871 | } | |
872 | ||
873 | end: | |
874 | return ret; | |
875 | } | |
876 | ||
877 | /* | |
55c9e7ca | 878 | * Teardown id tracker content, but don't free id_tracker object. |
a9ad0c8f | 879 | */ |
55c9e7ca | 880 | static void fini_id_tracker(struct ust_id_tracker *id_tracker) |
a9ad0c8f | 881 | { |
55c9e7ca | 882 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
883 | struct lttng_ht_iter iter; |
884 | ||
55c9e7ca | 885 | if (!id_tracker->ht) { |
a9ad0c8f MD |
886 | return; |
887 | } | |
888 | rcu_read_lock(); | |
55c9e7ca JR |
889 | cds_lfht_for_each_entry (id_tracker->ht->ht, &iter.iter, tracker_node, |
890 | node.node) { | |
891 | int ret = lttng_ht_del(id_tracker->ht, &iter); | |
a9ad0c8f MD |
892 | |
893 | assert(!ret); | |
55c9e7ca | 894 | destroy_id_tracker_node(tracker_node); |
a9ad0c8f MD |
895 | } |
896 | rcu_read_unlock(); | |
55c9e7ca JR |
897 | ht_cleanup_push(id_tracker->ht); |
898 | id_tracker->ht = NULL; | |
a9ad0c8f MD |
899 | } |
900 | ||
55c9e7ca JR |
901 | static struct ust_id_tracker_node *id_tracker_lookup( |
902 | struct ust_id_tracker *id_tracker, | |
903 | int id, | |
a9ad0c8f MD |
904 | struct lttng_ht_iter *iter) |
905 | { | |
55c9e7ca | 906 | unsigned long _id = (unsigned long) id; |
a9ad0c8f MD |
907 | struct lttng_ht_node_ulong *node; |
908 | ||
55c9e7ca | 909 | lttng_ht_lookup(id_tracker->ht, (void *) _id, iter); |
a9ad0c8f MD |
910 | node = lttng_ht_iter_get_node_ulong(iter); |
911 | if (node) { | |
55c9e7ca | 912 | return caa_container_of(node, struct ust_id_tracker_node, node); |
a9ad0c8f MD |
913 | } else { |
914 | return NULL; | |
915 | } | |
916 | } | |
917 | ||
55c9e7ca | 918 | static int id_tracker_add_id(struct ust_id_tracker *id_tracker, int id) |
a9ad0c8f MD |
919 | { |
920 | int retval = LTTNG_OK; | |
55c9e7ca | 921 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
922 | struct lttng_ht_iter iter; |
923 | ||
55c9e7ca | 924 | if (id < 0) { |
a9ad0c8f MD |
925 | retval = LTTNG_ERR_INVALID; |
926 | goto end; | |
927 | } | |
55c9e7ca | 928 | tracker_node = id_tracker_lookup(id_tracker, id, &iter); |
a9ad0c8f MD |
929 | if (tracker_node) { |
930 | /* Already exists. */ | |
159b042f | 931 | retval = LTTNG_ERR_PROCESS_ATTR_EXISTS; |
a9ad0c8f MD |
932 | goto end; |
933 | } | |
934 | tracker_node = zmalloc(sizeof(*tracker_node)); | |
935 | if (!tracker_node) { | |
936 | retval = LTTNG_ERR_NOMEM; | |
937 | goto end; | |
938 | } | |
55c9e7ca JR |
939 | lttng_ht_node_init_ulong(&tracker_node->node, (unsigned long) id); |
940 | lttng_ht_add_unique_ulong(id_tracker->ht, &tracker_node->node); | |
a9ad0c8f MD |
941 | end: |
942 | return retval; | |
943 | } | |
944 | ||
55c9e7ca | 945 | static int id_tracker_del_id(struct ust_id_tracker *id_tracker, int id) |
a9ad0c8f MD |
946 | { |
947 | int retval = LTTNG_OK, ret; | |
55c9e7ca | 948 | struct ust_id_tracker_node *tracker_node; |
a9ad0c8f MD |
949 | struct lttng_ht_iter iter; |
950 | ||
55c9e7ca | 951 | if (id < 0) { |
a9ad0c8f MD |
952 | retval = LTTNG_ERR_INVALID; |
953 | goto end; | |
954 | } | |
55c9e7ca | 955 | tracker_node = id_tracker_lookup(id_tracker, id, &iter); |
a9ad0c8f MD |
956 | if (!tracker_node) { |
957 | /* Not found */ | |
159b042f | 958 | retval = LTTNG_ERR_PROCESS_ATTR_MISSING; |
a9ad0c8f MD |
959 | goto end; |
960 | } | |
55c9e7ca | 961 | ret = lttng_ht_del(id_tracker->ht, &iter); |
a9ad0c8f MD |
962 | assert(!ret); |
963 | ||
55c9e7ca | 964 | destroy_id_tracker_node(tracker_node); |
a9ad0c8f MD |
965 | end: |
966 | return retval; | |
967 | } | |
968 | ||
55c9e7ca | 969 | static struct ust_id_tracker *get_id_tracker(struct ltt_ust_session *session, |
159b042f | 970 | enum lttng_process_attr process_attr) |
55c9e7ca | 971 | { |
159b042f JG |
972 | switch (process_attr) { |
973 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
55c9e7ca | 974 | return &session->vpid_tracker; |
159b042f | 975 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
55c9e7ca | 976 | return &session->vuid_tracker; |
159b042f | 977 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
55c9e7ca JR |
978 | return &session->vgid_tracker; |
979 | default: | |
980 | return NULL; | |
981 | } | |
982 | } | |
983 | ||
159b042f | 984 | static struct process_attr_tracker *_trace_ust_get_process_attr_tracker( |
55c9e7ca | 985 | struct ltt_ust_session *session, |
159b042f | 986 | enum lttng_process_attr process_attr) |
55c9e7ca | 987 | { |
159b042f JG |
988 | switch (process_attr) { |
989 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
990 | return session->tracker_vpid; | |
991 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
992 | return session->tracker_vuid; | |
993 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
994 | return session->tracker_vgid; | |
55c9e7ca JR |
995 | default: |
996 | return NULL; | |
997 | } | |
998 | } | |
999 | ||
159b042f JG |
1000 | const struct process_attr_tracker *trace_ust_get_process_attr_tracker( |
1001 | struct ltt_ust_session *session, | |
1002 | enum lttng_process_attr process_attr) | |
1003 | { | |
1004 | return (const struct process_attr_tracker *) | |
1005 | _trace_ust_get_process_attr_tracker( | |
1006 | session, process_attr); | |
1007 | } | |
1008 | ||
a9ad0c8f MD |
1009 | /* |
1010 | * The session lock is held when calling this function. | |
1011 | */ | |
159b042f | 1012 | int trace_ust_id_tracker_lookup(enum lttng_process_attr process_attr, |
55c9e7ca JR |
1013 | struct ltt_ust_session *session, |
1014 | int id) | |
a9ad0c8f MD |
1015 | { |
1016 | struct lttng_ht_iter iter; | |
55c9e7ca | 1017 | struct ust_id_tracker *id_tracker; |
a9ad0c8f | 1018 | |
159b042f | 1019 | id_tracker = get_id_tracker(session, process_attr); |
55c9e7ca JR |
1020 | if (!id_tracker) { |
1021 | abort(); | |
1022 | } | |
1023 | if (!id_tracker->ht) { | |
a9ad0c8f MD |
1024 | return 1; |
1025 | } | |
55c9e7ca | 1026 | if (id_tracker_lookup(id_tracker, id, &iter)) { |
a9ad0c8f MD |
1027 | return 1; |
1028 | } | |
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | /* | |
1033 | * Called with the session lock held. | |
1034 | */ | |
159b042f | 1035 | enum lttng_error_code trace_ust_process_attr_tracker_set_tracking_policy( |
55c9e7ca | 1036 | struct ltt_ust_session *session, |
159b042f JG |
1037 | enum lttng_process_attr process_attr, |
1038 | enum lttng_tracking_policy policy) | |
a9ad0c8f | 1039 | { |
159b042f JG |
1040 | int ret; |
1041 | enum lttng_error_code ret_code = LTTNG_OK; | |
1042 | struct ust_id_tracker *id_tracker = | |
1043 | get_id_tracker(session, process_attr); | |
1044 | struct process_attr_tracker *tracker = | |
1045 | _trace_ust_get_process_attr_tracker( | |
1046 | session, process_attr); | |
88e3c2f5 | 1047 | bool should_update_apps = false; |
159b042f | 1048 | enum lttng_tracking_policy previous_policy; |
55c9e7ca | 1049 | |
159b042f JG |
1050 | if (!tracker) { |
1051 | ret_code = LTTNG_ERR_INVALID; | |
1052 | goto end; | |
55c9e7ca | 1053 | } |
a9ad0c8f | 1054 | |
159b042f JG |
1055 | previous_policy = process_attr_tracker_get_tracking_policy(tracker); |
1056 | ret = process_attr_tracker_set_tracking_policy(tracker, policy); | |
1057 | if (ret) { | |
1058 | ret_code = LTTNG_ERR_UNK; | |
55c9e7ca JR |
1059 | goto end; |
1060 | } | |
1061 | ||
159b042f JG |
1062 | if (previous_policy == policy) { |
1063 | goto end; | |
55c9e7ca | 1064 | } |
159b042f JG |
1065 | |
1066 | switch (policy) { | |
1067 | case LTTNG_TRACKING_POLICY_INCLUDE_ALL: | |
1068 | /* Track all values: destroy tracker if exists. */ | |
55c9e7ca JR |
1069 | if (id_tracker->ht) { |
1070 | fini_id_tracker(id_tracker); | |
a9ad0c8f | 1071 | /* Ensure all apps have session. */ |
88e3c2f5 | 1072 | should_update_apps = true; |
a9ad0c8f | 1073 | } |
159b042f JG |
1074 | break; |
1075 | case LTTNG_TRACKING_POLICY_EXCLUDE_ALL: | |
1076 | case LTTNG_TRACKING_POLICY_INCLUDE_SET: | |
1077 | /* fall-through. */ | |
1078 | fini_id_tracker(id_tracker); | |
1079 | ret_code = init_id_tracker(id_tracker); | |
1080 | if (ret_code != LTTNG_OK) { | |
1081 | ERR("Error initializing ID tracker"); | |
1082 | goto end; | |
a9ad0c8f | 1083 | } |
159b042f JG |
1084 | /* Remove all apps from session. */ |
1085 | should_update_apps = true; | |
1086 | break; | |
1087 | default: | |
1088 | abort(); | |
a9ad0c8f | 1089 | } |
88e3c2f5 JG |
1090 | if (should_update_apps && session->active) { |
1091 | ust_app_global_update_all(session); | |
1092 | } | |
a9ad0c8f | 1093 | end: |
159b042f | 1094 | return ret_code; |
a9ad0c8f MD |
1095 | } |
1096 | ||
159b042f JG |
1097 | /* Called with the session lock held. */ |
1098 | enum lttng_error_code trace_ust_process_attr_tracker_inclusion_set_add_value( | |
55c9e7ca | 1099 | struct ltt_ust_session *session, |
159b042f JG |
1100 | enum lttng_process_attr process_attr, |
1101 | const struct process_attr_value *value) | |
a9ad0c8f | 1102 | { |
159b042f | 1103 | enum lttng_error_code ret_code = LTTNG_OK; |
a5a30920 | 1104 | bool should_update_apps = false; |
159b042f JG |
1105 | struct ust_id_tracker *id_tracker = |
1106 | get_id_tracker(session, process_attr); | |
1107 | struct process_attr_tracker *tracker; | |
1108 | int integral_value; | |
1109 | enum process_attr_tracker_status status; | |
1110 | struct ust_app *app; | |
55c9e7ca | 1111 | |
159b042f JG |
1112 | /* |
1113 | * Convert process attribute tracker value to the integral | |
1114 | * representation required by the kern-ctl API. | |
1115 | */ | |
1116 | switch (process_attr) { | |
1117 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
1118 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1119 | integral_value = (int) value->value.pid; | |
1120 | break; | |
1121 | case LTTNG_PROCESS_ATTR_USER_ID: | |
1122 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
1123 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME) { | |
1124 | uid_t uid; | |
1125 | ||
1126 | ret_code = utils_user_id_from_name( | |
1127 | value->value.user_name, &uid); | |
1128 | if (ret_code != LTTNG_OK) { | |
1129 | goto end; | |
1130 | } | |
1131 | integral_value = (int) uid; | |
1132 | } else { | |
1133 | integral_value = (int) value->value.uid; | |
1134 | } | |
1135 | break; | |
1136 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
1137 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
1138 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME) { | |
1139 | gid_t gid; | |
1140 | ||
1141 | ret_code = utils_group_id_from_name( | |
1142 | value->value.group_name, &gid); | |
1143 | if (ret_code != LTTNG_OK) { | |
1144 | goto end; | |
1145 | } | |
1146 | integral_value = (int) gid; | |
1147 | } else { | |
1148 | integral_value = (int) value->value.gid; | |
1149 | } | |
1150 | break; | |
1151 | default: | |
1152 | ret_code = LTTNG_ERR_INVALID; | |
55c9e7ca JR |
1153 | goto end; |
1154 | } | |
a9ad0c8f | 1155 | |
159b042f JG |
1156 | tracker = _trace_ust_get_process_attr_tracker(session, process_attr); |
1157 | if (!tracker) { | |
1158 | ret_code = LTTNG_ERR_INVALID; | |
74675e31 | 1159 | goto end; |
55c9e7ca JR |
1160 | } |
1161 | ||
159b042f JG |
1162 | status = process_attr_tracker_inclusion_set_add_value(tracker, value); |
1163 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { | |
1164 | switch (status) { | |
1165 | case PROCESS_ATTR_TRACKER_STATUS_EXISTS: | |
1166 | ret_code = LTTNG_ERR_PROCESS_ATTR_EXISTS; | |
1167 | break; | |
1168 | case PROCESS_ATTR_TRACKER_STATUS_INVALID_TRACKING_POLICY: | |
1169 | ret_code = LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY; | |
1170 | break; | |
1171 | case PROCESS_ATTR_TRACKER_STATUS_ERROR: | |
1172 | default: | |
1173 | ret_code = LTTNG_ERR_UNK; | |
1174 | break; | |
a9ad0c8f | 1175 | } |
159b042f JG |
1176 | goto end; |
1177 | } | |
a9ad0c8f | 1178 | |
159b042f JG |
1179 | DBG("User space track %s %d for session id %" PRIu64, |
1180 | lttng_process_attr_to_string(process_attr), | |
1181 | integral_value, session->id); | |
a9ad0c8f | 1182 | |
159b042f JG |
1183 | ret_code = id_tracker_add_id(id_tracker, integral_value); |
1184 | if (ret_code != LTTNG_OK) { | |
1185 | goto end; | |
1186 | } | |
1187 | /* Add session to application */ | |
1188 | switch (process_attr) { | |
1189 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1190 | app = ust_app_find_by_pid(integral_value); | |
1191 | if (app) { | |
a5a30920 | 1192 | should_update_apps = true; |
a9ad0c8f | 1193 | } |
159b042f JG |
1194 | break; |
1195 | default: | |
1196 | should_update_apps = true; | |
1197 | break; | |
a9ad0c8f | 1198 | } |
a5a30920 JR |
1199 | if (should_update_apps && session->active) { |
1200 | ust_app_global_update_all(session); | |
1201 | } | |
a9ad0c8f | 1202 | end: |
159b042f | 1203 | return ret_code; |
a9ad0c8f MD |
1204 | } |
1205 | ||
159b042f JG |
1206 | /* Called with the session lock held. */ |
1207 | enum lttng_error_code trace_ust_process_attr_tracker_inclusion_set_remove_value( | |
55c9e7ca | 1208 | struct ltt_ust_session *session, |
159b042f JG |
1209 | enum lttng_process_attr process_attr, |
1210 | const struct process_attr_value *value) | |
a5dfbb9d | 1211 | { |
159b042f JG |
1212 | enum lttng_error_code ret_code = LTTNG_OK; |
1213 | bool should_update_apps = false; | |
1214 | struct ust_id_tracker *id_tracker = | |
1215 | get_id_tracker(session, process_attr); | |
1216 | struct process_attr_tracker *tracker; | |
1217 | int integral_value; | |
1218 | enum process_attr_tracker_status status; | |
1219 | struct ust_app *app; | |
a5dfbb9d | 1220 | |
159b042f JG |
1221 | /* |
1222 | * Convert process attribute tracker value to the integral | |
1223 | * representation required by the kern-ctl API. | |
1224 | */ | |
1225 | switch (process_attr) { | |
1226 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
1227 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1228 | integral_value = (int) value->value.pid; | |
1229 | break; | |
1230 | case LTTNG_PROCESS_ATTR_USER_ID: | |
1231 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: | |
1232 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_USER_NAME) { | |
1233 | uid_t uid; | |
1234 | ||
1235 | ret_code = utils_user_id_from_name( | |
1236 | value->value.user_name, &uid); | |
1237 | if (ret_code != LTTNG_OK) { | |
1238 | goto end; | |
1239 | } | |
1240 | integral_value = (int) uid; | |
1241 | } else { | |
1242 | integral_value = (int) value->value.uid; | |
1243 | } | |
1244 | break; | |
1245 | case LTTNG_PROCESS_ATTR_GROUP_ID: | |
1246 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: | |
1247 | if (value->type == LTTNG_PROCESS_ATTR_VALUE_TYPE_GROUP_NAME) { | |
1248 | gid_t gid; | |
1249 | ||
1250 | ret_code = utils_group_id_from_name( | |
1251 | value->value.group_name, &gid); | |
1252 | if (ret_code != LTTNG_OK) { | |
1253 | goto end; | |
1254 | } | |
1255 | integral_value = (int) gid; | |
1256 | } else { | |
1257 | integral_value = (int) value->value.gid; | |
1258 | } | |
1259 | break; | |
1260 | default: | |
1261 | ret_code = LTTNG_ERR_INVALID; | |
1262 | goto end; | |
a5dfbb9d MD |
1263 | } |
1264 | ||
159b042f JG |
1265 | tracker = _trace_ust_get_process_attr_tracker(session, process_attr); |
1266 | if (!tracker) { | |
1267 | ret_code = LTTNG_ERR_INVALID; | |
74675e31 | 1268 | goto end; |
159b042f JG |
1269 | } |
1270 | ||
1271 | status = process_attr_tracker_inclusion_set_remove_value( | |
1272 | tracker, value); | |
1273 | if (status != PROCESS_ATTR_TRACKER_STATUS_OK) { | |
1274 | switch (status) { | |
1275 | case PROCESS_ATTR_TRACKER_STATUS_MISSING: | |
1276 | ret_code = LTTNG_ERR_PROCESS_ATTR_MISSING; | |
1277 | break; | |
1278 | case PROCESS_ATTR_TRACKER_STATUS_INVALID_TRACKING_POLICY: | |
1279 | ret_code = LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY; | |
1280 | break; | |
1281 | case PROCESS_ATTR_TRACKER_STATUS_ERROR: | |
1282 | default: | |
1283 | ret_code = LTTNG_ERR_UNK; | |
1284 | break; | |
1285 | } | |
a7a533cd | 1286 | goto end; |
a5dfbb9d | 1287 | } |
a7a533cd | 1288 | |
159b042f JG |
1289 | DBG("User space untrack %s %d for session id %" PRIu64, |
1290 | lttng_process_attr_to_string(process_attr), | |
1291 | integral_value, session->id); | |
1292 | ||
1293 | ret_code = id_tracker_del_id(id_tracker, integral_value); | |
1294 | if (ret_code != LTTNG_OK) { | |
a7a533cd JR |
1295 | goto end; |
1296 | } | |
159b042f JG |
1297 | /* Add session to application */ |
1298 | switch (process_attr) { | |
1299 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: | |
1300 | app = ust_app_find_by_pid(integral_value); | |
1301 | if (app) { | |
1302 | should_update_apps = true; | |
1303 | } | |
1304 | break; | |
1305 | default: | |
1306 | should_update_apps = true; | |
1307 | break; | |
1308 | } | |
1309 | if (should_update_apps && session->active) { | |
1310 | ust_app_global_update_all(session); | |
1311 | } | |
a7a533cd | 1312 | end: |
159b042f | 1313 | return ret_code; |
a5dfbb9d MD |
1314 | } |
1315 | ||
f6a9efaa DG |
1316 | /* |
1317 | * RCU safe free context structure. | |
1318 | */ | |
1319 | static void destroy_context_rcu(struct rcu_head *head) | |
1320 | { | |
bec39940 DG |
1321 | struct lttng_ht_node_ulong *node = |
1322 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
f6a9efaa DG |
1323 | struct ltt_ust_context *ctx = |
1324 | caa_container_of(node, struct ltt_ust_context, node); | |
1325 | ||
bdf64013 | 1326 | trace_ust_destroy_context(ctx); |
f6a9efaa DG |
1327 | } |
1328 | ||
1329 | /* | |
1330 | * Cleanup UST context hash table. | |
1331 | */ | |
7bd39047 | 1332 | static void destroy_contexts(struct lttng_ht *ht) |
f6a9efaa DG |
1333 | { |
1334 | int ret; | |
bec39940 DG |
1335 | struct lttng_ht_node_ulong *node; |
1336 | struct lttng_ht_iter iter; | |
31746f93 | 1337 | struct ltt_ust_context *ctx; |
f6a9efaa | 1338 | |
0525e9ae DG |
1339 | assert(ht); |
1340 | ||
36b588ed | 1341 | rcu_read_lock(); |
bec39940 | 1342 | cds_lfht_for_each_entry(ht->ht, &iter.iter, node, node) { |
31746f93 DG |
1343 | /* Remove from ordered list. */ |
1344 | ctx = caa_container_of(node, struct ltt_ust_context, node); | |
1345 | cds_list_del(&ctx->list); | |
1346 | /* Remove from channel's hash table. */ | |
bec39940 | 1347 | ret = lttng_ht_del(ht, &iter); |
f6a9efaa DG |
1348 | if (!ret) { |
1349 | call_rcu(&node->head, destroy_context_rcu); | |
1350 | } | |
f6a9efaa | 1351 | } |
36b588ed | 1352 | rcu_read_unlock(); |
ed52805d | 1353 | |
0b2dc8df | 1354 | ht_cleanup_push(ht); |
f6a9efaa DG |
1355 | } |
1356 | ||
97ee3a89 DG |
1357 | /* |
1358 | * Cleanup ust event structure. | |
1359 | */ | |
1360 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
1361 | { | |
0525e9ae DG |
1362 | assert(event); |
1363 | ||
f6a9efaa | 1364 | DBG2("Trace destroy UST event %s", event->attr.name); |
c3e68e71 | 1365 | lttng_map_key_put(event->key); |
6b453b5e | 1366 | free(event->filter_expression); |
53a80697 | 1367 | free(event->filter); |
40024f8a | 1368 | free(event->exclusion); |
97ee3a89 DG |
1369 | free(event); |
1370 | } | |
1371 | ||
bdf64013 JG |
1372 | /* |
1373 | * Cleanup ust context structure. | |
1374 | */ | |
1375 | void trace_ust_destroy_context(struct ltt_ust_context *ctx) | |
1376 | { | |
1377 | assert(ctx); | |
1378 | ||
1379 | if (ctx->ctx.ctx == LTTNG_UST_CONTEXT_APP_CONTEXT) { | |
1380 | free(ctx->ctx.u.app_ctx.provider_name); | |
1381 | free(ctx->ctx.u.app_ctx.ctx_name); | |
1382 | } | |
1383 | free(ctx); | |
1384 | } | |
1385 | ||
f6a9efaa DG |
1386 | /* |
1387 | * URCU intermediate call to complete destroy event. | |
1388 | */ | |
1389 | static void destroy_event_rcu(struct rcu_head *head) | |
1390 | { | |
bec39940 DG |
1391 | struct lttng_ht_node_str *node = |
1392 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
1393 | struct ltt_ust_event *event = |
1394 | caa_container_of(node, struct ltt_ust_event, node); | |
1395 | ||
1396 | trace_ust_destroy_event(event); | |
1397 | } | |
1398 | ||
284d8f55 DG |
1399 | /* |
1400 | * Cleanup UST events hashtable. | |
1401 | */ | |
7bd39047 | 1402 | static void destroy_events(struct lttng_ht *events) |
ed52805d DG |
1403 | { |
1404 | int ret; | |
bec39940 DG |
1405 | struct lttng_ht_node_str *node; |
1406 | struct lttng_ht_iter iter; | |
ed52805d | 1407 | |
0525e9ae DG |
1408 | assert(events); |
1409 | ||
36b588ed | 1410 | rcu_read_lock(); |
bec39940 DG |
1411 | cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) { |
1412 | ret = lttng_ht_del(events, &iter); | |
7bd39047 DG |
1413 | assert(!ret); |
1414 | call_rcu(&node->head, destroy_event_rcu); | |
ed52805d | 1415 | } |
36b588ed | 1416 | rcu_read_unlock(); |
ed52805d | 1417 | |
0b2dc8df | 1418 | ht_cleanup_push(events); |
ed52805d DG |
1419 | } |
1420 | ||
97ee3a89 DG |
1421 | /* |
1422 | * Cleanup ust channel structure. | |
36b588ed MD |
1423 | * |
1424 | * Should _NOT_ be called with RCU read lock held. | |
97ee3a89 | 1425 | */ |
36b588ed | 1426 | static void _trace_ust_destroy_channel(struct ltt_ust_channel *channel) |
97ee3a89 | 1427 | { |
0525e9ae DG |
1428 | assert(channel); |
1429 | ||
f6a9efaa | 1430 | DBG2("Trace destroy UST channel %s", channel->name); |
97ee3a89 | 1431 | |
97ee3a89 | 1432 | free(channel); |
f6a9efaa DG |
1433 | } |
1434 | ||
c3e68e71 JR |
1435 | /* |
1436 | * Cleanup ust map structure. | |
1437 | * | |
1438 | * Should _NOT_ be called with RCU read lock held. | |
1439 | */ | |
1440 | static void _trace_ust_destroy_map(struct ltt_ust_map *map) | |
1441 | { | |
1442 | struct map_kv_ht_entry *kv_entry; | |
1443 | struct lttng_ht_iter ht_iter; | |
1444 | struct lttng_ht *dead_app_kv_ht; | |
1445 | ||
1446 | assert(map); | |
1447 | ||
1448 | DBG2("Trace destroy UST map %s", map->name); | |
1449 | ||
1450 | /* | |
1451 | * Remove all the keys before destroying the hashtables. | |
1452 | */ | |
1453 | dead_app_kv_ht = map->dead_app_kv_values.dead_app_kv_values_32bits; | |
1454 | cds_lfht_for_each_entry(dead_app_kv_ht->ht, &ht_iter.iter, kv_entry, node.node) { | |
1455 | struct lttng_ht_iter entry_iter; | |
1456 | ||
1457 | entry_iter.iter.node = &kv_entry->node.node; | |
1458 | lttng_ht_del(dead_app_kv_ht, &entry_iter); | |
1459 | ||
1460 | free(kv_entry->key); | |
1461 | free(kv_entry); | |
1462 | } | |
1463 | lttng_ht_destroy(map->dead_app_kv_values.dead_app_kv_values_32bits); | |
1464 | ||
1465 | dead_app_kv_ht = map->dead_app_kv_values.dead_app_kv_values_64bits; | |
1466 | cds_lfht_for_each_entry(dead_app_kv_ht->ht, &ht_iter.iter, kv_entry, node.node) { | |
1467 | struct lttng_ht_iter entry_iter; | |
1468 | ||
1469 | entry_iter.iter.node = &kv_entry->node.node; | |
1470 | lttng_ht_del(dead_app_kv_ht, &entry_iter); | |
1471 | ||
1472 | free(kv_entry->key); | |
1473 | free(kv_entry); | |
1474 | } | |
1475 | ||
1476 | lttng_ht_destroy(map->dead_app_kv_values.dead_app_kv_values_64bits); | |
1477 | ||
1478 | lttng_map_put(map->map); | |
1479 | free(map); | |
1480 | } | |
1481 | ||
f6a9efaa DG |
1482 | /* |
1483 | * URCU intermediate call to complete destroy channel. | |
1484 | */ | |
1485 | static void destroy_channel_rcu(struct rcu_head *head) | |
1486 | { | |
bec39940 DG |
1487 | struct lttng_ht_node_str *node = |
1488 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
1489 | struct ltt_ust_channel *channel = |
1490 | caa_container_of(node, struct ltt_ust_channel, node); | |
1491 | ||
36b588ed MD |
1492 | _trace_ust_destroy_channel(channel); |
1493 | } | |
1494 | ||
c3e68e71 JR |
1495 | /* |
1496 | * URCU intermediate call to complete destroy map. | |
1497 | */ | |
1498 | static void destroy_map_rcu(struct rcu_head *head) | |
1499 | { | |
1500 | struct lttng_ht_node_str *node = | |
1501 | caa_container_of(head, struct lttng_ht_node_str, head); | |
1502 | struct ltt_ust_map *map = | |
1503 | caa_container_of(node, struct ltt_ust_map, node); | |
1504 | ||
1505 | _trace_ust_destroy_map(map); | |
1506 | } | |
1507 | ||
36b588ed MD |
1508 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) |
1509 | { | |
627cbbe7 MD |
1510 | /* Destroying all events of the channel */ |
1511 | destroy_events(channel->events); | |
1512 | /* Destroying all context of the channel */ | |
1513 | destroy_contexts(channel->ctx); | |
1514 | ||
36b588ed | 1515 | call_rcu(&channel->node.head, destroy_channel_rcu); |
97ee3a89 DG |
1516 | } |
1517 | ||
c3e68e71 JR |
1518 | void trace_ust_destroy_map(struct ltt_ust_map *map) |
1519 | { | |
1520 | /* Destroying all events of the map */ | |
1521 | destroy_events(map->events); | |
1522 | ||
1523 | call_rcu(&map->node.head, destroy_map_rcu); | |
1524 | } | |
1525 | ||
d5979e4a DG |
1526 | /* |
1527 | * Remove an UST channel from a channel HT. | |
1528 | */ | |
1529 | void trace_ust_delete_channel(struct lttng_ht *ht, | |
1530 | struct ltt_ust_channel *channel) | |
1531 | { | |
1532 | int ret; | |
1533 | struct lttng_ht_iter iter; | |
1534 | ||
1535 | assert(ht); | |
1536 | assert(channel); | |
1537 | ||
1538 | iter.iter.node = &channel->node.node; | |
1539 | ret = lttng_ht_del(ht, &iter); | |
1540 | assert(!ret); | |
1541 | } | |
1542 | ||
c3e68e71 JR |
1543 | /* |
1544 | * Remove an UST map from a map HT. | |
1545 | */ | |
1546 | void trace_ust_delete_map(struct lttng_ht *ht, | |
1547 | struct ltt_ust_map *map) | |
1548 | { | |
1549 | int ret; | |
1550 | struct lttng_ht_iter iter; | |
1551 | ||
1552 | assert(ht); | |
1553 | assert(map); | |
1554 | ||
1555 | iter.iter.node = &map->node.node; | |
1556 | ret = lttng_ht_del(ht, &iter); | |
1557 | assert(!ret); | |
1558 | } | |
1559 | ||
97ee3a89 | 1560 | /* |
f6a9efaa | 1561 | * Iterate over a hash table containing channels and cleanup safely. |
97ee3a89 | 1562 | */ |
bec39940 | 1563 | static void destroy_channels(struct lttng_ht *channels) |
f6a9efaa | 1564 | { |
bec39940 DG |
1565 | struct lttng_ht_node_str *node; |
1566 | struct lttng_ht_iter iter; | |
f6a9efaa | 1567 | |
0525e9ae DG |
1568 | assert(channels); |
1569 | ||
24d1723f | 1570 | rcu_read_lock(); |
bec39940 | 1571 | cds_lfht_for_each_entry(channels->ht, &iter.iter, node, node) { |
627cbbe7 MD |
1572 | struct ltt_ust_channel *chan = |
1573 | caa_container_of(node, struct ltt_ust_channel, node); | |
1574 | ||
1575 | trace_ust_delete_channel(channels, chan); | |
1576 | trace_ust_destroy_channel(chan); | |
f6a9efaa | 1577 | } |
36b588ed | 1578 | rcu_read_unlock(); |
ed52805d | 1579 | |
0b2dc8df | 1580 | ht_cleanup_push(channels); |
f6a9efaa DG |
1581 | } |
1582 | ||
c3e68e71 JR |
1583 | /* |
1584 | * Iterate over a hash table containing maps and cleanup safely. | |
1585 | */ | |
1586 | static void destroy_maps(struct lttng_ht *maps) | |
1587 | { | |
1588 | struct lttng_ht_node_str *node; | |
1589 | struct lttng_ht_iter iter; | |
1590 | ||
1591 | assert(maps); | |
1592 | ||
1593 | rcu_read_lock(); | |
1594 | cds_lfht_for_each_entry(maps->ht, &iter.iter, node, node) { | |
1595 | struct ltt_ust_map *map = | |
1596 | caa_container_of(node, struct ltt_ust_map, node); | |
1597 | ||
1598 | trace_ust_delete_map(maps, map); | |
1599 | trace_ust_destroy_map(map); | |
1600 | } | |
1601 | rcu_read_unlock(); | |
1602 | ||
1603 | ht_cleanup_push(maps); | |
1604 | } | |
f6a9efaa DG |
1605 | /* |
1606 | * Cleanup UST global domain. | |
1607 | */ | |
1608 | static void destroy_domain_global(struct ltt_ust_domain_global *dom) | |
1609 | { | |
0525e9ae DG |
1610 | assert(dom); |
1611 | ||
f6a9efaa | 1612 | destroy_channels(dom->channels); |
c3e68e71 | 1613 | destroy_maps(dom->maps); |
f6a9efaa | 1614 | } |
97ee3a89 | 1615 | |
f6a9efaa | 1616 | /* |
d070c424 MD |
1617 | * Cleanup ust session structure, keeping data required by |
1618 | * destroy notifier. | |
36b588ed MD |
1619 | * |
1620 | * Should *NOT* be called with RCU read-side lock held. | |
f6a9efaa DG |
1621 | */ |
1622 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
1623 | { | |
fefd409b | 1624 | struct agent *agt; |
7972aab2 | 1625 | struct buffer_reg_uid *reg, *sreg; |
fefd409b | 1626 | struct lttng_ht_iter iter; |
7972aab2 | 1627 | |
0525e9ae | 1628 | assert(session); |
97ee3a89 | 1629 | |
d9bf3ca4 | 1630 | DBG2("Trace UST destroy session %" PRIu64, session->id); |
f6a9efaa | 1631 | |
f6a9efaa DG |
1632 | /* Cleaning up UST domain */ |
1633 | destroy_domain_global(&session->domain_global); | |
fefd409b | 1634 | |
0c0fcd77 | 1635 | rcu_read_lock(); |
fefd409b | 1636 | cds_lfht_for_each_entry(session->agents->ht, &iter.iter, agt, node.node) { |
d0edf546 JG |
1637 | int ret = lttng_ht_del(session->agents, &iter); |
1638 | ||
1639 | assert(!ret); | |
fefd409b DG |
1640 | agent_destroy(agt); |
1641 | } | |
0c0fcd77 | 1642 | rcu_read_unlock(); |
7972aab2 | 1643 | |
8ada2175 MD |
1644 | ht_cleanup_push(session->agents); |
1645 | ||
7972aab2 DG |
1646 | /* Cleanup UID buffer registry object(s). */ |
1647 | cds_list_for_each_entry_safe(reg, sreg, &session->buffer_reg_uid_list, | |
1648 | lnode) { | |
1649 | cds_list_del(®->lnode); | |
1650 | buffer_reg_uid_remove(reg); | |
1651 | buffer_reg_uid_destroy(reg, session->consumer); | |
1652 | } | |
44d3bd01 | 1653 | |
159b042f JG |
1654 | process_attr_tracker_destroy(session->tracker_vpid); |
1655 | process_attr_tracker_destroy(session->tracker_vuid); | |
1656 | process_attr_tracker_destroy(session->tracker_vgid); | |
55c9e7ca JR |
1657 | |
1658 | fini_id_tracker(&session->vpid_tracker); | |
1659 | fini_id_tracker(&session->vuid_tracker); | |
1660 | fini_id_tracker(&session->vgid_tracker); | |
82b69413 | 1661 | lttng_trace_chunk_put(session->current_trace_chunk); |
d070c424 MD |
1662 | } |
1663 | ||
1664 | /* Free elements needed by destroy notifiers. */ | |
1665 | void trace_ust_free_session(struct ltt_ust_session *session) | |
1666 | { | |
1667 | consumer_output_put(session->consumer); | |
97ee3a89 DG |
1668 | free(session); |
1669 | } |