Commit | Line | Data |
---|---|---|
97ee3a89 DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
d14d33bf AM |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License, version 2 only, | |
6 | * as published by the Free Software Foundation. | |
97ee3a89 | 7 | * |
d14d33bf AM |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
97ee3a89 | 12 | * |
d14d33bf AM |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
97ee3a89 DG |
16 | */ |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
97ee3a89 DG |
19 | #include <stdio.h> |
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
22 | #include <unistd.h> | |
d9bf3ca4 | 23 | #include <inttypes.h> |
97ee3a89 | 24 | |
990570ed DG |
25 | #include <common/common.h> |
26 | #include <common/defaults.h> | |
97ee3a89 | 27 | |
7972aab2 | 28 | #include "buffer-registry.h" |
97ee3a89 | 29 | #include "trace-ust.h" |
0b2dc8df | 30 | #include "utils.h" |
a9ad0c8f | 31 | #include "ust-app.h" |
7c1d2758 | 32 | #include "agent.h" |
97ee3a89 | 33 | |
025faf73 DG |
34 | /* |
35 | * Match function for the events hash table lookup. | |
36 | * | |
37 | * Matches by name only. Used by the disable command. | |
38 | */ | |
18eace3b DG |
39 | int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node, |
40 | const void *_key) | |
41 | { | |
42 | struct ltt_ust_event *event; | |
43 | const char *name; | |
44 | ||
45 | assert(node); | |
46 | assert(_key); | |
47 | ||
48 | event = caa_container_of(node, struct ltt_ust_event, node.node); | |
49 | name = _key; | |
50 | ||
51 | /* Event name */ | |
52 | if (strncmp(event->attr.name, name, sizeof(event->attr.name)) != 0) { | |
53 | goto no_match; | |
54 | } | |
55 | ||
025faf73 | 56 | /* Match */ |
18eace3b DG |
57 | return 1; |
58 | ||
59 | no_match: | |
60 | return 0; | |
61 | } | |
62 | ||
025faf73 DG |
63 | /* |
64 | * Match function for the hash table lookup. | |
65 | * | |
66 | * It matches an ust event based on three attributes which are the event name, | |
67 | * the filter bytecode and the loglevel. | |
68 | */ | |
18eace3b DG |
69 | int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key) |
70 | { | |
71 | struct ltt_ust_event *event; | |
72 | const struct ltt_ust_ht_key *key; | |
2106efa0 | 73 | int ev_loglevel_value; |
19a97244 | 74 | int ll_match; |
18eace3b DG |
75 | |
76 | assert(node); | |
77 | assert(_key); | |
78 | ||
79 | event = caa_container_of(node, struct ltt_ust_event, node.node); | |
80 | key = _key; | |
2106efa0 | 81 | ev_loglevel_value = event->attr.loglevel; |
18eace3b | 82 | |
f19e9f8b | 83 | /* Match the 4 elements of the key: name, filter, loglevel, exclusions. */ |
18eace3b DG |
84 | |
85 | /* Event name */ | |
86 | if (strncmp(event->attr.name, key->name, sizeof(event->attr.name)) != 0) { | |
18eace3b DG |
87 | goto no_match; |
88 | } | |
89 | ||
b953b8cd | 90 | /* Event loglevel value and type. */ |
19a97244 PP |
91 | ll_match = loglevels_match(event->attr.loglevel_type, |
92 | ev_loglevel_value, key->loglevel_type, | |
93 | key->loglevel_value, LTTNG_UST_LOGLEVEL_ALL); | |
94 | ||
95 | if (!ll_match) { | |
b953b8cd | 96 | goto no_match; |
18eace3b DG |
97 | } |
98 | ||
99 | /* Only one of the filters is NULL, fail. */ | |
100 | if ((key->filter && !event->filter) || (!key->filter && event->filter)) { | |
18eace3b DG |
101 | goto no_match; |
102 | } | |
103 | ||
025faf73 DG |
104 | if (key->filter && event->filter) { |
105 | /* Both filters exists, check length followed by the bytecode. */ | |
106 | if (event->filter->len != key->filter->len || | |
107 | memcmp(event->filter->data, key->filter->data, | |
108 | event->filter->len) != 0) { | |
109 | goto no_match; | |
110 | } | |
18eace3b DG |
111 | } |
112 | ||
f19e9f8b JI |
113 | /* If only one of the exclusions is NULL, fail. */ |
114 | if ((key->exclusion && !event->exclusion) || (!key->exclusion && event->exclusion)) { | |
115 | goto no_match; | |
116 | } | |
117 | ||
118 | if (key->exclusion && event->exclusion) { | |
119 | /* Both exclusions exist; check count followed by names. */ | |
120 | if (event->exclusion->count != key->exclusion->count || | |
121 | memcmp(event->exclusion->names, key->exclusion->names, | |
122 | event->exclusion->count * LTTNG_SYMBOL_NAME_LEN) != 0) { | |
123 | goto no_match; | |
124 | } | |
125 | } | |
025faf73 DG |
126 | /* Match. */ |
127 | return 1; | |
18eace3b DG |
128 | |
129 | no_match: | |
130 | return 0; | |
18eace3b DG |
131 | } |
132 | ||
0177d773 | 133 | /* |
2223c96f DG |
134 | * Find the channel in the hashtable and return channel pointer. RCU read side |
135 | * lock MUST be acquired before calling this. | |
0177d773 | 136 | */ |
bec39940 | 137 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, |
f6a9efaa | 138 | char *name) |
0177d773 | 139 | { |
bec39940 DG |
140 | struct lttng_ht_node_str *node; |
141 | struct lttng_ht_iter iter; | |
0177d773 | 142 | |
85076754 MD |
143 | /* |
144 | * If we receive an empty string for channel name, it means the | |
145 | * default channel name is requested. | |
146 | */ | |
147 | if (name[0] == '\0') | |
148 | name = DEFAULT_CHANNEL_NAME; | |
149 | ||
bec39940 DG |
150 | lttng_ht_lookup(ht, (void *)name, &iter); |
151 | node = lttng_ht_iter_get_node_str(&iter); | |
f6a9efaa | 152 | if (node == NULL) { |
44d3bd01 DG |
153 | goto error; |
154 | } | |
155 | ||
f6a9efaa | 156 | DBG2("Trace UST channel %s found by name", name); |
0177d773 | 157 | |
f6a9efaa | 158 | return caa_container_of(node, struct ltt_ust_channel, node); |
97ee3a89 DG |
159 | |
160 | error: | |
f6a9efaa | 161 | DBG2("Trace UST channel %s not found by name", name); |
97ee3a89 DG |
162 | return NULL; |
163 | } | |
164 | ||
165 | /* | |
2223c96f DG |
166 | * Find the event in the hashtable and return event pointer. RCU read side lock |
167 | * MUST be acquired before calling this. | |
97ee3a89 | 168 | */ |
18eace3b | 169 | struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht, |
2106efa0 | 170 | char *name, struct lttng_filter_bytecode *filter, |
b953b8cd PP |
171 | enum lttng_ust_loglevel_type loglevel_type, int loglevel_value, |
172 | struct lttng_event_exclusion *exclusion) | |
97ee3a89 | 173 | { |
bec39940 DG |
174 | struct lttng_ht_node_str *node; |
175 | struct lttng_ht_iter iter; | |
18eace3b | 176 | struct ltt_ust_ht_key key; |
97ee3a89 | 177 | |
18eace3b DG |
178 | assert(name); |
179 | assert(ht); | |
180 | ||
181 | key.name = name; | |
182 | key.filter = filter; | |
b953b8cd PP |
183 | key.loglevel_type = loglevel_type; |
184 | key.loglevel_value = loglevel_value; | |
10646003 | 185 | key.exclusion = exclusion; |
18eace3b | 186 | |
18eace3b DG |
187 | cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed), |
188 | trace_ust_ht_match_event, &key, &iter.iter); | |
bec39940 | 189 | node = lttng_ht_iter_get_node_str(&iter); |
f6a9efaa | 190 | if (node == NULL) { |
97ee3a89 DG |
191 | goto error; |
192 | } | |
193 | ||
18eace3b | 194 | DBG2("Trace UST event %s found", key.name); |
f6a9efaa DG |
195 | |
196 | return caa_container_of(node, struct ltt_ust_event, node); | |
97ee3a89 DG |
197 | |
198 | error: | |
18eace3b | 199 | DBG2("Trace UST event %s NOT found", key.name); |
97ee3a89 DG |
200 | return NULL; |
201 | } | |
202 | ||
fefd409b DG |
203 | /* |
204 | * Lookup an agent in the session agents hash table by domain type and return | |
205 | * the object if found else NULL. | |
4da703ad JG |
206 | * |
207 | * RCU read side lock must be acquired before calling and only released | |
208 | * once the agent is no longer in scope or being used. | |
fefd409b DG |
209 | */ |
210 | struct agent *trace_ust_find_agent(struct ltt_ust_session *session, | |
211 | enum lttng_domain_type domain_type) | |
212 | { | |
213 | struct agent *agt = NULL; | |
214 | struct lttng_ht_node_u64 *node; | |
215 | struct lttng_ht_iter iter; | |
216 | uint64_t key; | |
217 | ||
218 | assert(session); | |
219 | ||
220 | DBG3("Trace ust agent lookup for domain %d", domain_type); | |
221 | ||
222 | key = domain_type; | |
223 | ||
224 | lttng_ht_lookup(session->agents, &key, &iter); | |
225 | node = lttng_ht_iter_get_node_u64(&iter); | |
226 | if (!node) { | |
227 | goto end; | |
228 | } | |
229 | agt = caa_container_of(node, struct agent, node); | |
230 | ||
231 | end: | |
232 | return agt; | |
233 | } | |
234 | ||
97ee3a89 DG |
235 | /* |
236 | * Allocate and initialize a ust session data structure. | |
237 | * | |
238 | * Return pointer to structure or NULL. | |
239 | */ | |
d9bf3ca4 | 240 | struct ltt_ust_session *trace_ust_create_session(uint64_t session_id) |
97ee3a89 DG |
241 | { |
242 | struct ltt_ust_session *lus; | |
243 | ||
244 | /* Allocate a new ltt ust session */ | |
ba7f0ae5 | 245 | lus = zmalloc(sizeof(struct ltt_ust_session)); |
97ee3a89 | 246 | if (lus == NULL) { |
ba7f0ae5 | 247 | PERROR("create ust session zmalloc"); |
97ee3a89 DG |
248 | goto error; |
249 | } | |
250 | ||
251 | /* Init data structure */ | |
a991f516 | 252 | lus->id = session_id; |
14fb1ebe | 253 | lus->active = 0; |
97ee3a89 | 254 | |
84ad93e8 DG |
255 | /* Set default metadata channel attribute. */ |
256 | lus->metadata_attr.overwrite = DEFAULT_CHANNEL_OVERWRITE; | |
257 | lus->metadata_attr.subbuf_size = default_get_metadata_subbuf_size(); | |
258 | lus->metadata_attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM; | |
259 | lus->metadata_attr.switch_timer_interval = DEFAULT_METADATA_SWITCH_TIMER; | |
260 | lus->metadata_attr.read_timer_interval = DEFAULT_METADATA_READ_TIMER; | |
261 | lus->metadata_attr.output = LTTNG_UST_MMAP; | |
262 | ||
7972aab2 DG |
263 | /* |
264 | * Default buffer type. This can be changed through an enable channel | |
265 | * requesting a different type. Note that this can only be changed once | |
266 | * during the session lifetime which is at the first enable channel and | |
267 | * only before start. The flag buffer_type_changed indicates the status. | |
268 | */ | |
8692d4e5 | 269 | lus->buffer_type = LTTNG_BUFFER_PER_UID; |
7972aab2 DG |
270 | /* Once set to 1, the buffer_type is immutable for the session. */ |
271 | lus->buffer_type_changed = 0; | |
272 | /* Init it in case it get used after allocation. */ | |
273 | CDS_INIT_LIST_HEAD(&lus->buffer_reg_uid_list); | |
f6a9efaa DG |
274 | |
275 | /* Alloc UST global domain channels' HT */ | |
bec39940 | 276 | lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
fefd409b DG |
277 | /* Alloc agent hash table. */ |
278 | lus->agents = lttng_ht_new(0, LTTNG_HT_TYPE_U64); | |
44d3bd01 | 279 | |
00e2e675 DG |
280 | lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL); |
281 | if (lus->consumer == NULL) { | |
09a90bcd | 282 | goto error_consumer; |
00e2e675 DG |
283 | } |
284 | ||
44d3bd01 DG |
285 | DBG2("UST trace session create successful"); |
286 | ||
97ee3a89 DG |
287 | return lus; |
288 | ||
09a90bcd | 289 | error_consumer: |
0b2dc8df | 290 | ht_cleanup_push(lus->domain_global.channels); |
fefd409b | 291 | ht_cleanup_push(lus->agents); |
44844c29 | 292 | free(lus); |
97ee3a89 DG |
293 | error: |
294 | return NULL; | |
295 | } | |
296 | ||
297 | /* | |
298 | * Allocate and initialize a ust channel data structure. | |
299 | * | |
300 | * Return pointer to structure or NULL. | |
301 | */ | |
51755dc8 JG |
302 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan, |
303 | enum lttng_domain_type domain) | |
97ee3a89 | 304 | { |
97ee3a89 DG |
305 | struct ltt_ust_channel *luc; |
306 | ||
0525e9ae | 307 | assert(chan); |
0525e9ae | 308 | |
37357452 | 309 | luc = zmalloc(sizeof(struct ltt_ust_channel)); |
97ee3a89 | 310 | if (luc == NULL) { |
df0f840b | 311 | PERROR("ltt_ust_channel zmalloc"); |
97ee3a89 DG |
312 | goto error; |
313 | } | |
314 | ||
51755dc8 JG |
315 | luc->domain = domain; |
316 | ||
44d3bd01 | 317 | /* Copy UST channel attributes */ |
48842b30 DG |
318 | luc->attr.overwrite = chan->attr.overwrite; |
319 | luc->attr.subbuf_size = chan->attr.subbuf_size; | |
320 | luc->attr.num_subbuf = chan->attr.num_subbuf; | |
321 | luc->attr.switch_timer_interval = chan->attr.switch_timer_interval; | |
322 | luc->attr.read_timer_interval = chan->attr.read_timer_interval; | |
6775595e | 323 | luc->attr.output = (enum lttng_ust_output) chan->attr.output; |
44d3bd01 DG |
324 | |
325 | /* Translate to UST output enum */ | |
326 | switch (luc->attr.output) { | |
327 | default: | |
328 | luc->attr.output = LTTNG_UST_MMAP; | |
329 | break; | |
97ee3a89 | 330 | } |
97ee3a89 | 331 | |
85076754 MD |
332 | /* |
333 | * If we receive an empty string for channel name, it means the | |
334 | * default channel name is requested. | |
335 | */ | |
336 | if (chan->name[0] == '\0') { | |
337 | strncpy(luc->name, DEFAULT_CHANNEL_NAME, sizeof(luc->name)); | |
338 | } else { | |
339 | /* Copy channel name */ | |
340 | strncpy(luc->name, chan->name, sizeof(luc->name)); | |
341 | } | |
97ee3a89 DG |
342 | luc->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; |
343 | ||
f6a9efaa | 344 | /* Init node */ |
bec39940 | 345 | lttng_ht_node_init_str(&luc->node, luc->name); |
31746f93 DG |
346 | CDS_INIT_LIST_HEAD(&luc->ctx_list); |
347 | ||
f6a9efaa | 348 | /* Alloc hash tables */ |
bec39940 DG |
349 | luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
350 | luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
f6a9efaa | 351 | |
1624d5b7 JD |
352 | /* On-disk circular buffer parameters */ |
353 | luc->tracefile_size = chan->attr.tracefile_size; | |
354 | luc->tracefile_count = chan->attr.tracefile_count; | |
355 | ||
f6a9efaa DG |
356 | DBG2("Trace UST channel %s created", luc->name); |
357 | ||
97ee3a89 | 358 | error: |
7972aab2 | 359 | return luc; |
97ee3a89 DG |
360 | } |
361 | ||
ad11a1d3 PP |
362 | /* |
363 | * Validates an exclusion list. | |
364 | * | |
365 | * Returns 0 if valid, negative value if invalid. | |
366 | */ | |
367 | static int validate_exclusion(struct lttng_event_exclusion *exclusion) | |
368 | { | |
369 | size_t i; | |
370 | int ret = 0; | |
371 | ||
372 | assert(exclusion); | |
373 | ||
374 | for (i = 0; i < exclusion->count; ++i) { | |
375 | size_t j; | |
376 | const char *name_a = | |
377 | LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, i); | |
378 | ||
379 | for (j = 0; j < i; ++j) { | |
380 | const char *name_b = | |
381 | LTTNG_EVENT_EXCLUSION_NAME_AT(exclusion, j); | |
382 | ||
383 | if (!strncmp(name_a, name_b, LTTNG_SYMBOL_NAME_LEN)) { | |
384 | /* Match! */ | |
385 | ret = -1; | |
386 | goto end; | |
387 | } | |
388 | } | |
389 | } | |
390 | ||
391 | end: | |
392 | return ret; | |
393 | } | |
394 | ||
97ee3a89 DG |
395 | /* |
396 | * Allocate and initialize a ust event. Set name and event type. | |
49d21f93 | 397 | * We own filter_expression, filter, and exclusion. |
97ee3a89 DG |
398 | * |
399 | * Return pointer to structure or NULL. | |
400 | */ | |
025faf73 | 401 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev, |
6b453b5e | 402 | char *filter_expression, |
561c6897 | 403 | struct lttng_filter_bytecode *filter, |
88f06f15 JG |
404 | struct lttng_event_exclusion *exclusion, |
405 | bool internal_event) | |
97ee3a89 DG |
406 | { |
407 | struct ltt_ust_event *lue; | |
97ee3a89 | 408 | |
0525e9ae DG |
409 | assert(ev); |
410 | ||
ad11a1d3 PP |
411 | if (exclusion && validate_exclusion(exclusion)) { |
412 | goto error; | |
413 | } | |
414 | ||
37357452 | 415 | lue = zmalloc(sizeof(struct ltt_ust_event)); |
44d3bd01 | 416 | if (lue == NULL) { |
ba7f0ae5 | 417 | PERROR("ust event zmalloc"); |
97ee3a89 DG |
418 | goto error; |
419 | } | |
420 | ||
88f06f15 JG |
421 | lue->internal = internal_event; |
422 | ||
97ee3a89 DG |
423 | switch (ev->type) { |
424 | case LTTNG_EVENT_PROBE: | |
44d3bd01 | 425 | lue->attr.instrumentation = LTTNG_UST_PROBE; |
97ee3a89 DG |
426 | break; |
427 | case LTTNG_EVENT_FUNCTION: | |
44d3bd01 | 428 | lue->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
429 | break; |
430 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
44d3bd01 | 431 | lue->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
432 | break; |
433 | case LTTNG_EVENT_TRACEPOINT: | |
44d3bd01 | 434 | lue->attr.instrumentation = LTTNG_UST_TRACEPOINT; |
97ee3a89 DG |
435 | break; |
436 | default: | |
437 | ERR("Unknown ust instrumentation type (%d)", ev->type); | |
44844c29 | 438 | goto error_free_event; |
97ee3a89 DG |
439 | } |
440 | ||
441 | /* Copy event name */ | |
44d3bd01 DG |
442 | strncpy(lue->attr.name, ev->name, LTTNG_UST_SYM_NAME_LEN); |
443 | lue->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
97ee3a89 | 444 | |
0cda4f28 | 445 | switch (ev->loglevel_type) { |
8005f29a MD |
446 | case LTTNG_EVENT_LOGLEVEL_ALL: |
447 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_ALL; | |
22e25b71 | 448 | lue->attr.loglevel = -1; /* Force to -1 */ |
0cda4f28 | 449 | break; |
8005f29a MD |
450 | case LTTNG_EVENT_LOGLEVEL_RANGE: |
451 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_RANGE; | |
22e25b71 | 452 | lue->attr.loglevel = ev->loglevel; |
8005f29a MD |
453 | break; |
454 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
455 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_SINGLE; | |
22e25b71 | 456 | lue->attr.loglevel = ev->loglevel; |
0cda4f28 MD |
457 | break; |
458 | default: | |
4431494b | 459 | ERR("Unknown ust loglevel type (%d)", ev->loglevel_type); |
0cda4f28 MD |
460 | goto error_free_event; |
461 | } | |
462 | ||
025faf73 | 463 | /* Same layout. */ |
6b453b5e | 464 | lue->filter_expression = filter_expression; |
51755dc8 JG |
465 | lue->filter = filter; |
466 | lue->exclusion = exclusion; | |
0cda4f28 | 467 | |
f6a9efaa | 468 | /* Init node */ |
bec39940 | 469 | lttng_ht_node_init_str(&lue->node, lue->attr.name); |
97ee3a89 | 470 | |
300b8fd5 MD |
471 | DBG2("Trace UST event %s, loglevel (%d,%d) created", |
472 | lue->attr.name, lue->attr.loglevel_type, | |
473 | lue->attr.loglevel); | |
284d8f55 | 474 | |
97ee3a89 DG |
475 | return lue; |
476 | ||
44844c29 MD |
477 | error_free_event: |
478 | free(lue); | |
97ee3a89 | 479 | error: |
49d21f93 MD |
480 | free(filter_expression); |
481 | free(filter); | |
482 | free(exclusion); | |
97ee3a89 DG |
483 | return NULL; |
484 | } | |
485 | ||
aa3514e9 MD |
486 | static |
487 | int trace_ust_context_type_event_to_ust(enum lttng_event_context_type type) | |
55cc08a6 | 488 | { |
aa3514e9 | 489 | int utype; |
0525e9ae | 490 | |
aa3514e9 | 491 | switch (type) { |
9197c5c4 MD |
492 | case LTTNG_EVENT_CONTEXT_VTID: |
493 | utype = LTTNG_UST_CONTEXT_VTID; | |
494 | break; | |
495 | case LTTNG_EVENT_CONTEXT_VPID: | |
496 | utype = LTTNG_UST_CONTEXT_VPID; | |
497 | break; | |
498 | case LTTNG_EVENT_CONTEXT_PTHREAD_ID: | |
499 | utype = LTTNG_UST_CONTEXT_PTHREAD_ID; | |
500 | break; | |
501 | case LTTNG_EVENT_CONTEXT_PROCNAME: | |
502 | utype = LTTNG_UST_CONTEXT_PROCNAME; | |
503 | break; | |
7c612c2e WP |
504 | case LTTNG_EVENT_CONTEXT_IP: |
505 | utype = LTTNG_UST_CONTEXT_IP; | |
506 | break; | |
aa3514e9 | 507 | case LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER: |
354e561b MD |
508 | if (!ustctl_has_perf_counters()) { |
509 | utype = -1; | |
510 | WARN("Perf counters not implemented in UST"); | |
511 | } else { | |
512 | utype = LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER; | |
513 | } | |
aa3514e9 | 514 | break; |
9197c5c4 MD |
515 | default: |
516 | ERR("Invalid UST context"); | |
aa3514e9 MD |
517 | utype = -1; |
518 | break; | |
519 | } | |
520 | return utype; | |
521 | } | |
522 | ||
523 | /* | |
524 | * Return 1 if contexts match, 0 otherwise. | |
525 | */ | |
526 | int trace_ust_match_context(struct ltt_ust_context *uctx, | |
527 | struct lttng_event_context *ctx) | |
528 | { | |
529 | int utype; | |
530 | ||
531 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
532 | if (utype < 0) { | |
533 | return 0; | |
534 | } | |
535 | if (uctx->ctx.ctx != utype) { | |
536 | return 0; | |
537 | } | |
538 | switch (utype) { | |
539 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
540 | if (uctx->ctx.u.perf_counter.type | |
541 | != ctx->u.perf_counter.type) { | |
542 | return 0; | |
543 | } | |
544 | if (uctx->ctx.u.perf_counter.config | |
545 | != ctx->u.perf_counter.config) { | |
546 | return 0; | |
547 | } | |
548 | if (strncmp(uctx->ctx.u.perf_counter.name, | |
549 | ctx->u.perf_counter.name, | |
550 | LTTNG_UST_SYM_NAME_LEN)) { | |
551 | return 0; | |
552 | } | |
553 | break; | |
554 | default: | |
555 | break; | |
556 | ||
557 | } | |
558 | return 1; | |
559 | } | |
560 | ||
561 | /* | |
562 | * Allocate and initialize an UST context. | |
563 | * | |
564 | * Return pointer to structure or NULL. | |
565 | */ | |
566 | struct ltt_ust_context *trace_ust_create_context( | |
567 | struct lttng_event_context *ctx) | |
568 | { | |
569 | struct ltt_ust_context *uctx; | |
570 | int utype; | |
571 | ||
572 | assert(ctx); | |
573 | ||
574 | utype = trace_ust_context_type_event_to_ust(ctx->ctx); | |
575 | if (utype < 0) { | |
9197c5c4 MD |
576 | return NULL; |
577 | } | |
55cc08a6 DG |
578 | |
579 | uctx = zmalloc(sizeof(struct ltt_ust_context)); | |
580 | if (uctx == NULL) { | |
581 | PERROR("zmalloc ltt_ust_context"); | |
582 | goto error; | |
583 | } | |
584 | ||
aa3514e9 MD |
585 | uctx->ctx.ctx = (enum lttng_ust_context_type) utype; |
586 | switch (utype) { | |
587 | case LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER: | |
588 | uctx->ctx.u.perf_counter.type = ctx->u.perf_counter.type; | |
589 | uctx->ctx.u.perf_counter.config = ctx->u.perf_counter.config; | |
590 | strncpy(uctx->ctx.u.perf_counter.name, ctx->u.perf_counter.name, | |
591 | LTTNG_UST_SYM_NAME_LEN); | |
592 | uctx->ctx.u.perf_counter.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
593 | break; | |
594 | default: | |
595 | break; | |
596 | } | |
bec39940 | 597 | lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx); |
55cc08a6 DG |
598 | |
599 | return uctx; | |
600 | ||
601 | error: | |
602 | return NULL; | |
603 | } | |
604 | ||
a9ad0c8f MD |
605 | static |
606 | void destroy_pid_tracker_node_rcu(struct rcu_head *head) | |
607 | { | |
608 | struct ust_pid_tracker_node *tracker_node = | |
609 | caa_container_of(head, struct ust_pid_tracker_node, node.head); | |
610 | free(tracker_node); | |
611 | } | |
612 | ||
613 | static | |
614 | void destroy_pid_tracker_node(struct ust_pid_tracker_node *tracker_node) | |
615 | { | |
616 | ||
617 | call_rcu(&tracker_node->node.head, destroy_pid_tracker_node_rcu); | |
618 | } | |
619 | ||
620 | static | |
621 | int init_pid_tracker(struct ust_pid_tracker *pid_tracker) | |
622 | { | |
623 | int ret = 0; | |
624 | ||
625 | pid_tracker->ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
626 | if (!pid_tracker->ht) { | |
627 | ret = -1; | |
628 | goto end; | |
629 | } | |
630 | ||
631 | end: | |
632 | return ret; | |
633 | } | |
634 | ||
635 | /* | |
636 | * Teardown pid tracker content, but don't free pid_tracker object. | |
637 | */ | |
638 | static | |
639 | void fini_pid_tracker(struct ust_pid_tracker *pid_tracker) | |
640 | { | |
641 | struct ust_pid_tracker_node *tracker_node; | |
642 | struct lttng_ht_iter iter; | |
643 | ||
644 | if (!pid_tracker->ht) { | |
645 | return; | |
646 | } | |
647 | rcu_read_lock(); | |
648 | cds_lfht_for_each_entry(pid_tracker->ht->ht, | |
649 | &iter.iter, tracker_node, node.node) { | |
650 | int ret = lttng_ht_del(pid_tracker->ht, &iter); | |
651 | ||
652 | assert(!ret); | |
653 | destroy_pid_tracker_node(tracker_node); | |
654 | } | |
655 | rcu_read_unlock(); | |
656 | ht_cleanup_push(pid_tracker->ht); | |
657 | pid_tracker->ht = NULL; | |
658 | } | |
659 | ||
660 | static | |
661 | struct ust_pid_tracker_node *pid_tracker_lookup( | |
662 | struct ust_pid_tracker *pid_tracker, int pid, | |
663 | struct lttng_ht_iter *iter) | |
664 | { | |
665 | unsigned long _pid = (unsigned long) pid; | |
666 | struct lttng_ht_node_ulong *node; | |
667 | ||
668 | lttng_ht_lookup(pid_tracker->ht, (void *) _pid, iter); | |
669 | node = lttng_ht_iter_get_node_ulong(iter); | |
670 | if (node) { | |
671 | return caa_container_of(node, struct ust_pid_tracker_node, | |
672 | node); | |
673 | } else { | |
674 | return NULL; | |
675 | } | |
676 | } | |
677 | ||
678 | static | |
679 | int pid_tracker_add_pid(struct ust_pid_tracker *pid_tracker, int pid) | |
680 | { | |
681 | int retval = LTTNG_OK; | |
682 | struct ust_pid_tracker_node *tracker_node; | |
683 | struct lttng_ht_iter iter; | |
684 | ||
685 | if (pid < 0) { | |
686 | retval = LTTNG_ERR_INVALID; | |
687 | goto end; | |
688 | } | |
689 | tracker_node = pid_tracker_lookup(pid_tracker, pid, &iter); | |
690 | if (tracker_node) { | |
691 | /* Already exists. */ | |
b93a4a13 | 692 | retval = LTTNG_ERR_PID_TRACKED; |
a9ad0c8f MD |
693 | goto end; |
694 | } | |
695 | tracker_node = zmalloc(sizeof(*tracker_node)); | |
696 | if (!tracker_node) { | |
697 | retval = LTTNG_ERR_NOMEM; | |
698 | goto end; | |
699 | } | |
700 | lttng_ht_node_init_ulong(&tracker_node->node, (unsigned long) pid); | |
701 | lttng_ht_add_unique_ulong(pid_tracker->ht, &tracker_node->node); | |
702 | end: | |
703 | return retval; | |
704 | } | |
705 | ||
706 | static | |
707 | int pid_tracker_del_pid(struct ust_pid_tracker *pid_tracker, int pid) | |
708 | { | |
709 | int retval = LTTNG_OK, ret; | |
710 | struct ust_pid_tracker_node *tracker_node; | |
711 | struct lttng_ht_iter iter; | |
712 | ||
713 | if (pid < 0) { | |
714 | retval = LTTNG_ERR_INVALID; | |
715 | goto end; | |
716 | } | |
717 | tracker_node = pid_tracker_lookup(pid_tracker, pid, &iter); | |
718 | if (!tracker_node) { | |
719 | /* Not found */ | |
b93a4a13 | 720 | retval = LTTNG_ERR_PID_NOT_TRACKED; |
a9ad0c8f MD |
721 | goto end; |
722 | } | |
723 | ret = lttng_ht_del(pid_tracker->ht, &iter); | |
724 | assert(!ret); | |
725 | ||
726 | destroy_pid_tracker_node(tracker_node); | |
727 | end: | |
728 | return retval; | |
729 | } | |
730 | ||
731 | /* | |
732 | * The session lock is held when calling this function. | |
733 | */ | |
734 | int trace_ust_pid_tracker_lookup(struct ltt_ust_session *session, int pid) | |
735 | { | |
736 | struct lttng_ht_iter iter; | |
737 | ||
738 | if (!session->pid_tracker.ht) { | |
739 | return 1; | |
740 | } | |
741 | if (pid_tracker_lookup(&session->pid_tracker, pid, &iter)) { | |
742 | return 1; | |
743 | } | |
744 | return 0; | |
745 | } | |
746 | ||
747 | /* | |
748 | * Called with the session lock held. | |
749 | */ | |
750 | int trace_ust_track_pid(struct ltt_ust_session *session, int pid) | |
751 | { | |
752 | int retval = LTTNG_OK; | |
753 | ||
754 | if (pid == -1) { | |
755 | /* Track all pids: destroy tracker if exists. */ | |
756 | if (session->pid_tracker.ht) { | |
757 | fini_pid_tracker(&session->pid_tracker); | |
758 | /* Ensure all apps have session. */ | |
759 | ust_app_global_update_all(session); | |
760 | } | |
761 | } else { | |
762 | int ret; | |
763 | ||
764 | if (!session->pid_tracker.ht) { | |
765 | /* Create tracker. */ | |
766 | if (init_pid_tracker(&session->pid_tracker)) { | |
767 | ERR("Error initializing PID tracker"); | |
768 | retval = LTTNG_ERR_NOMEM; | |
769 | goto end; | |
770 | } | |
771 | ret = pid_tracker_add_pid(&session->pid_tracker, pid); | |
772 | if (ret != LTTNG_OK) { | |
773 | retval = ret; | |
774 | fini_pid_tracker(&session->pid_tracker); | |
775 | goto end; | |
776 | } | |
777 | /* Remove all apps from session except pid. */ | |
778 | ust_app_global_update_all(session); | |
779 | } else { | |
780 | struct ust_app *app; | |
781 | ||
782 | ret = pid_tracker_add_pid(&session->pid_tracker, pid); | |
783 | if (ret != LTTNG_OK) { | |
784 | retval = ret; | |
785 | goto end; | |
786 | } | |
787 | /* Add session to application */ | |
788 | app = ust_app_find_by_pid(pid); | |
789 | if (app) { | |
790 | ust_app_global_update(session, app); | |
791 | } | |
792 | } | |
793 | } | |
794 | end: | |
795 | return retval; | |
796 | } | |
797 | ||
798 | /* | |
799 | * Called with the session lock held. | |
800 | */ | |
801 | int trace_ust_untrack_pid(struct ltt_ust_session *session, int pid) | |
802 | { | |
803 | int retval = LTTNG_OK; | |
804 | ||
805 | if (pid == -1) { | |
806 | /* Create empty tracker, replace old tracker. */ | |
807 | struct ust_pid_tracker tmp_tracker; | |
808 | ||
809 | tmp_tracker = session->pid_tracker; | |
810 | if (init_pid_tracker(&session->pid_tracker)) { | |
811 | ERR("Error initializing PID tracker"); | |
812 | retval = LTTNG_ERR_NOMEM; | |
813 | /* Rollback operation. */ | |
814 | session->pid_tracker = tmp_tracker; | |
815 | goto end; | |
816 | } | |
817 | fini_pid_tracker(&tmp_tracker); | |
818 | ||
819 | /* Remove session from all applications */ | |
820 | ust_app_global_update_all(session); | |
821 | } else { | |
822 | int ret; | |
823 | struct ust_app *app; | |
824 | ||
825 | if (!session->pid_tracker.ht) { | |
b894343d JG |
826 | /* No PID being tracked. */ |
827 | retval = LTTNG_ERR_PID_NOT_TRACKED; | |
a9ad0c8f MD |
828 | goto end; |
829 | } | |
830 | /* Remove PID from tracker */ | |
831 | ret = pid_tracker_del_pid(&session->pid_tracker, pid); | |
832 | if (ret != LTTNG_OK) { | |
833 | retval = ret; | |
834 | goto end; | |
835 | } | |
836 | /* Remove session from application. */ | |
837 | app = ust_app_find_by_pid(pid); | |
838 | if (app) { | |
839 | ust_app_global_update(session, app); | |
840 | } | |
841 | } | |
842 | end: | |
843 | return retval; | |
844 | } | |
845 | ||
a5dfbb9d MD |
846 | /* |
847 | * Called with session lock held. | |
848 | */ | |
849 | ssize_t trace_ust_list_tracker_pids(struct ltt_ust_session *session, | |
850 | int32_t **_pids) | |
851 | { | |
852 | struct ust_pid_tracker_node *tracker_node; | |
853 | struct lttng_ht_iter iter; | |
854 | unsigned long count, i = 0; | |
855 | long approx[2]; | |
856 | int32_t *pids; | |
857 | int ret = 0; | |
858 | ||
859 | if (!session->pid_tracker.ht) { | |
860 | /* Tracker disabled. Set first entry to -1. */ | |
861 | pids = zmalloc(sizeof(*pids)); | |
862 | if (!pids) { | |
863 | ret = -1; | |
864 | goto end; | |
865 | } | |
866 | pids[0] = -1; | |
867 | *_pids = pids; | |
868 | return 1; | |
869 | } | |
870 | ||
871 | rcu_read_lock(); | |
872 | cds_lfht_count_nodes(session->pid_tracker.ht->ht, | |
873 | &approx[0], &count, &approx[1]); | |
874 | pids = zmalloc(sizeof(*pids) * count); | |
875 | if (!pids) { | |
876 | ret = -1; | |
877 | goto end; | |
878 | } | |
879 | cds_lfht_for_each_entry(session->pid_tracker.ht->ht, | |
880 | &iter.iter, tracker_node, node.node) { | |
881 | pids[i++] = tracker_node->node.key; | |
882 | } | |
883 | *_pids = pids; | |
884 | ret = count; | |
885 | end: | |
886 | rcu_read_unlock(); | |
887 | return ret; | |
888 | } | |
889 | ||
f6a9efaa DG |
890 | /* |
891 | * RCU safe free context structure. | |
892 | */ | |
893 | static void destroy_context_rcu(struct rcu_head *head) | |
894 | { | |
bec39940 DG |
895 | struct lttng_ht_node_ulong *node = |
896 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
f6a9efaa DG |
897 | struct ltt_ust_context *ctx = |
898 | caa_container_of(node, struct ltt_ust_context, node); | |
899 | ||
900 | free(ctx); | |
901 | } | |
902 | ||
903 | /* | |
904 | * Cleanup UST context hash table. | |
905 | */ | |
7bd39047 | 906 | static void destroy_contexts(struct lttng_ht *ht) |
f6a9efaa DG |
907 | { |
908 | int ret; | |
bec39940 DG |
909 | struct lttng_ht_node_ulong *node; |
910 | struct lttng_ht_iter iter; | |
31746f93 | 911 | struct ltt_ust_context *ctx; |
f6a9efaa | 912 | |
0525e9ae DG |
913 | assert(ht); |
914 | ||
36b588ed | 915 | rcu_read_lock(); |
bec39940 | 916 | cds_lfht_for_each_entry(ht->ht, &iter.iter, node, node) { |
31746f93 DG |
917 | /* Remove from ordered list. */ |
918 | ctx = caa_container_of(node, struct ltt_ust_context, node); | |
919 | cds_list_del(&ctx->list); | |
920 | /* Remove from channel's hash table. */ | |
bec39940 | 921 | ret = lttng_ht_del(ht, &iter); |
f6a9efaa DG |
922 | if (!ret) { |
923 | call_rcu(&node->head, destroy_context_rcu); | |
924 | } | |
f6a9efaa | 925 | } |
36b588ed | 926 | rcu_read_unlock(); |
ed52805d | 927 | |
0b2dc8df | 928 | ht_cleanup_push(ht); |
f6a9efaa DG |
929 | } |
930 | ||
97ee3a89 DG |
931 | /* |
932 | * Cleanup ust event structure. | |
933 | */ | |
934 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
935 | { | |
0525e9ae DG |
936 | assert(event); |
937 | ||
f6a9efaa | 938 | DBG2("Trace destroy UST event %s", event->attr.name); |
6b453b5e | 939 | free(event->filter_expression); |
53a80697 | 940 | free(event->filter); |
40024f8a | 941 | free(event->exclusion); |
97ee3a89 DG |
942 | free(event); |
943 | } | |
944 | ||
f6a9efaa DG |
945 | /* |
946 | * URCU intermediate call to complete destroy event. | |
947 | */ | |
948 | static void destroy_event_rcu(struct rcu_head *head) | |
949 | { | |
bec39940 DG |
950 | struct lttng_ht_node_str *node = |
951 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
952 | struct ltt_ust_event *event = |
953 | caa_container_of(node, struct ltt_ust_event, node); | |
954 | ||
955 | trace_ust_destroy_event(event); | |
956 | } | |
957 | ||
284d8f55 DG |
958 | /* |
959 | * Cleanup UST events hashtable. | |
960 | */ | |
7bd39047 | 961 | static void destroy_events(struct lttng_ht *events) |
ed52805d DG |
962 | { |
963 | int ret; | |
bec39940 DG |
964 | struct lttng_ht_node_str *node; |
965 | struct lttng_ht_iter iter; | |
ed52805d | 966 | |
0525e9ae DG |
967 | assert(events); |
968 | ||
36b588ed | 969 | rcu_read_lock(); |
bec39940 DG |
970 | cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) { |
971 | ret = lttng_ht_del(events, &iter); | |
7bd39047 DG |
972 | assert(!ret); |
973 | call_rcu(&node->head, destroy_event_rcu); | |
ed52805d | 974 | } |
36b588ed | 975 | rcu_read_unlock(); |
ed52805d | 976 | |
0b2dc8df | 977 | ht_cleanup_push(events); |
ed52805d DG |
978 | } |
979 | ||
97ee3a89 DG |
980 | /* |
981 | * Cleanup ust channel structure. | |
36b588ed MD |
982 | * |
983 | * Should _NOT_ be called with RCU read lock held. | |
97ee3a89 | 984 | */ |
36b588ed | 985 | static void _trace_ust_destroy_channel(struct ltt_ust_channel *channel) |
97ee3a89 | 986 | { |
0525e9ae DG |
987 | assert(channel); |
988 | ||
f6a9efaa | 989 | DBG2("Trace destroy UST channel %s", channel->name); |
97ee3a89 | 990 | |
97ee3a89 | 991 | free(channel); |
f6a9efaa DG |
992 | } |
993 | ||
994 | /* | |
995 | * URCU intermediate call to complete destroy channel. | |
996 | */ | |
997 | static void destroy_channel_rcu(struct rcu_head *head) | |
998 | { | |
bec39940 DG |
999 | struct lttng_ht_node_str *node = |
1000 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
1001 | struct ltt_ust_channel *channel = |
1002 | caa_container_of(node, struct ltt_ust_channel, node); | |
1003 | ||
36b588ed MD |
1004 | _trace_ust_destroy_channel(channel); |
1005 | } | |
1006 | ||
1007 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
1008 | { | |
627cbbe7 MD |
1009 | /* Destroying all events of the channel */ |
1010 | destroy_events(channel->events); | |
1011 | /* Destroying all context of the channel */ | |
1012 | destroy_contexts(channel->ctx); | |
1013 | ||
36b588ed | 1014 | call_rcu(&channel->node.head, destroy_channel_rcu); |
97ee3a89 DG |
1015 | } |
1016 | ||
d5979e4a DG |
1017 | /* |
1018 | * Remove an UST channel from a channel HT. | |
1019 | */ | |
1020 | void trace_ust_delete_channel(struct lttng_ht *ht, | |
1021 | struct ltt_ust_channel *channel) | |
1022 | { | |
1023 | int ret; | |
1024 | struct lttng_ht_iter iter; | |
1025 | ||
1026 | assert(ht); | |
1027 | assert(channel); | |
1028 | ||
1029 | iter.iter.node = &channel->node.node; | |
1030 | ret = lttng_ht_del(ht, &iter); | |
1031 | assert(!ret); | |
1032 | } | |
1033 | ||
97ee3a89 | 1034 | /* |
f6a9efaa | 1035 | * Iterate over a hash table containing channels and cleanup safely. |
97ee3a89 | 1036 | */ |
bec39940 | 1037 | static void destroy_channels(struct lttng_ht *channels) |
f6a9efaa | 1038 | { |
bec39940 DG |
1039 | struct lttng_ht_node_str *node; |
1040 | struct lttng_ht_iter iter; | |
f6a9efaa | 1041 | |
0525e9ae DG |
1042 | assert(channels); |
1043 | ||
24d1723f | 1044 | rcu_read_lock(); |
bec39940 | 1045 | cds_lfht_for_each_entry(channels->ht, &iter.iter, node, node) { |
627cbbe7 MD |
1046 | struct ltt_ust_channel *chan = |
1047 | caa_container_of(node, struct ltt_ust_channel, node); | |
1048 | ||
1049 | trace_ust_delete_channel(channels, chan); | |
1050 | trace_ust_destroy_channel(chan); | |
f6a9efaa | 1051 | } |
36b588ed | 1052 | rcu_read_unlock(); |
ed52805d | 1053 | |
0b2dc8df | 1054 | ht_cleanup_push(channels); |
f6a9efaa DG |
1055 | } |
1056 | ||
f6a9efaa DG |
1057 | /* |
1058 | * Cleanup UST global domain. | |
1059 | */ | |
1060 | static void destroy_domain_global(struct ltt_ust_domain_global *dom) | |
1061 | { | |
0525e9ae DG |
1062 | assert(dom); |
1063 | ||
f6a9efaa DG |
1064 | destroy_channels(dom->channels); |
1065 | } | |
97ee3a89 | 1066 | |
f6a9efaa DG |
1067 | /* |
1068 | * Cleanup ust session structure | |
36b588ed MD |
1069 | * |
1070 | * Should *NOT* be called with RCU read-side lock held. | |
f6a9efaa DG |
1071 | */ |
1072 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
1073 | { | |
fefd409b | 1074 | struct agent *agt; |
7972aab2 | 1075 | struct buffer_reg_uid *reg, *sreg; |
fefd409b | 1076 | struct lttng_ht_iter iter; |
7972aab2 | 1077 | |
0525e9ae | 1078 | assert(session); |
97ee3a89 | 1079 | |
d9bf3ca4 | 1080 | DBG2("Trace UST destroy session %" PRIu64, session->id); |
f6a9efaa | 1081 | |
f6a9efaa DG |
1082 | /* Cleaning up UST domain */ |
1083 | destroy_domain_global(&session->domain_global); | |
fefd409b | 1084 | |
0c0fcd77 | 1085 | rcu_read_lock(); |
fefd409b | 1086 | cds_lfht_for_each_entry(session->agents->ht, &iter.iter, agt, node.node) { |
d0edf546 JG |
1087 | int ret = lttng_ht_del(session->agents, &iter); |
1088 | ||
1089 | assert(!ret); | |
fefd409b DG |
1090 | agent_destroy(agt); |
1091 | } | |
0c0fcd77 | 1092 | rcu_read_unlock(); |
7972aab2 | 1093 | |
8ada2175 MD |
1094 | ht_cleanup_push(session->agents); |
1095 | ||
7972aab2 DG |
1096 | /* Cleanup UID buffer registry object(s). */ |
1097 | cds_list_for_each_entry_safe(reg, sreg, &session->buffer_reg_uid_list, | |
1098 | lnode) { | |
1099 | cds_list_del(®->lnode); | |
1100 | buffer_reg_uid_remove(reg); | |
1101 | buffer_reg_uid_destroy(reg, session->consumer); | |
1102 | } | |
44d3bd01 | 1103 | |
6addfa37 | 1104 | consumer_output_put(session->consumer); |
3f8e211f | 1105 | |
a9ad0c8f MD |
1106 | fini_pid_tracker(&session->pid_tracker); |
1107 | ||
97ee3a89 DG |
1108 | free(session); |
1109 | } |