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 | ||
18 | #define _GNU_SOURCE | |
19 | #include <stdio.h> | |
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
22 | #include <unistd.h> | |
23 | ||
990570ed DG |
24 | #include <common/common.h> |
25 | #include <common/defaults.h> | |
97ee3a89 DG |
26 | |
27 | #include "trace-ust.h" | |
28 | ||
0177d773 | 29 | /* |
f6a9efaa | 30 | * Find the channel in the hashtable. |
0177d773 | 31 | */ |
bec39940 | 32 | struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht, |
f6a9efaa | 33 | char *name) |
0177d773 | 34 | { |
bec39940 DG |
35 | struct lttng_ht_node_str *node; |
36 | struct lttng_ht_iter iter; | |
0177d773 | 37 | |
f6a9efaa | 38 | rcu_read_lock(); |
bec39940 DG |
39 | lttng_ht_lookup(ht, (void *)name, &iter); |
40 | node = lttng_ht_iter_get_node_str(&iter); | |
f6a9efaa DG |
41 | if (node == NULL) { |
42 | rcu_read_unlock(); | |
44d3bd01 DG |
43 | goto error; |
44 | } | |
f6a9efaa | 45 | rcu_read_unlock(); |
44d3bd01 | 46 | |
f6a9efaa | 47 | DBG2("Trace UST channel %s found by name", name); |
0177d773 | 48 | |
f6a9efaa | 49 | return caa_container_of(node, struct ltt_ust_channel, node); |
97ee3a89 DG |
50 | |
51 | error: | |
f6a9efaa | 52 | DBG2("Trace UST channel %s not found by name", name); |
97ee3a89 DG |
53 | return NULL; |
54 | } | |
55 | ||
56 | /* | |
f6a9efaa | 57 | * Find the event in the hashtable. |
97ee3a89 | 58 | */ |
bec39940 | 59 | struct ltt_ust_event *trace_ust_find_event_by_name(struct lttng_ht *ht, |
f6a9efaa | 60 | char *name) |
97ee3a89 | 61 | { |
bec39940 DG |
62 | struct lttng_ht_node_str *node; |
63 | struct lttng_ht_iter iter; | |
97ee3a89 | 64 | |
f6a9efaa | 65 | rcu_read_lock(); |
bec39940 DG |
66 | lttng_ht_lookup(ht, (void *) name, &iter); |
67 | node = lttng_ht_iter_get_node_str(&iter); | |
f6a9efaa DG |
68 | if (node == NULL) { |
69 | rcu_read_unlock(); | |
97ee3a89 DG |
70 | goto error; |
71 | } | |
f6a9efaa | 72 | rcu_read_unlock(); |
97ee3a89 | 73 | |
284d8f55 | 74 | DBG2("Trace UST event found by name %s", name); |
f6a9efaa DG |
75 | |
76 | return caa_container_of(node, struct ltt_ust_event, node); | |
97ee3a89 DG |
77 | |
78 | error: | |
284d8f55 | 79 | DBG2("Trace UST event NOT found by name %s", name); |
97ee3a89 DG |
80 | return NULL; |
81 | } | |
82 | ||
83 | /* | |
84 | * Allocate and initialize a ust session data structure. | |
85 | * | |
86 | * Return pointer to structure or NULL. | |
87 | */ | |
fc4705fe DG |
88 | struct ltt_ust_session *trace_ust_create_session(char *path, |
89 | unsigned int session_id, struct lttng_domain *domain) | |
97ee3a89 | 90 | { |
0177d773 | 91 | int ret; |
97ee3a89 DG |
92 | struct ltt_ust_session *lus; |
93 | ||
94 | /* Allocate a new ltt ust session */ | |
ba7f0ae5 | 95 | lus = zmalloc(sizeof(struct ltt_ust_session)); |
97ee3a89 | 96 | if (lus == NULL) { |
ba7f0ae5 | 97 | PERROR("create ust session zmalloc"); |
97ee3a89 DG |
98 | goto error; |
99 | } | |
100 | ||
101 | /* Init data structure */ | |
a991f516 | 102 | lus->id = session_id; |
36dc12cc | 103 | lus->start_trace = 0; |
97ee3a89 | 104 | |
f6a9efaa | 105 | /* Alloc UST domain hash tables */ |
bec39940 DG |
106 | lus->domain_pid = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); |
107 | lus->domain_exec = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
f6a9efaa DG |
108 | |
109 | /* Alloc UST global domain channels' HT */ | |
bec39940 | 110 | lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
44d3bd01 | 111 | |
00e2e675 DG |
112 | lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL); |
113 | if (lus->consumer == NULL) { | |
a4b92340 | 114 | goto error_free_session; |
00e2e675 DG |
115 | } |
116 | ||
117 | /* | |
118 | * The tmp_consumer stays NULL until a set_consumer_uri command is | |
119 | * executed. At this point, the consumer should be nullify until an | |
120 | * enable_consumer command. This assignment is symbolic since we've zmalloc | |
121 | * the struct. | |
122 | */ | |
123 | lus->tmp_consumer = NULL; | |
124 | ||
125 | /* Use the default consumer output which is the tracing session path. */ | |
a4b92340 DG |
126 | if (path && strlen(path) > 0) { |
127 | ret = snprintf(lus->consumer->dst.trace_path, PATH_MAX, | |
128 | "%s" DEFAULT_UST_TRACE_DIR, path); | |
129 | if (ret < 0) { | |
130 | PERROR("snprintf UST consumer trace path"); | |
131 | goto error; | |
132 | } | |
133 | ||
134 | /* Set session path */ | |
135 | ret = snprintf(lus->pathname, PATH_MAX, "%s" DEFAULT_UST_TRACE_DIR, | |
136 | path); | |
137 | if (ret < 0) { | |
138 | PERROR("snprintf kernel traces path"); | |
139 | goto error_free_session; | |
140 | } | |
0177d773 DG |
141 | } |
142 | ||
44d3bd01 DG |
143 | DBG2("UST trace session create successful"); |
144 | ||
97ee3a89 DG |
145 | return lus; |
146 | ||
44844c29 | 147 | error_free_session: |
a2c0da86 MD |
148 | lttng_ht_destroy(lus->domain_global.channels); |
149 | lttng_ht_destroy(lus->domain_exec); | |
150 | lttng_ht_destroy(lus->domain_pid); | |
44844c29 | 151 | free(lus); |
97ee3a89 DG |
152 | error: |
153 | return NULL; | |
154 | } | |
155 | ||
156 | /* | |
157 | * Allocate and initialize a ust channel data structure. | |
158 | * | |
159 | * Return pointer to structure or NULL. | |
160 | */ | |
44d3bd01 DG |
161 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan, |
162 | char *path) | |
97ee3a89 DG |
163 | { |
164 | int ret; | |
165 | struct ltt_ust_channel *luc; | |
166 | ||
37357452 | 167 | luc = zmalloc(sizeof(struct ltt_ust_channel)); |
97ee3a89 | 168 | if (luc == NULL) { |
df0f840b | 169 | PERROR("ltt_ust_channel zmalloc"); |
97ee3a89 DG |
170 | goto error; |
171 | } | |
172 | ||
44d3bd01 | 173 | /* Copy UST channel attributes */ |
48842b30 DG |
174 | luc->attr.overwrite = chan->attr.overwrite; |
175 | luc->attr.subbuf_size = chan->attr.subbuf_size; | |
176 | luc->attr.num_subbuf = chan->attr.num_subbuf; | |
177 | luc->attr.switch_timer_interval = chan->attr.switch_timer_interval; | |
178 | luc->attr.read_timer_interval = chan->attr.read_timer_interval; | |
6775595e | 179 | luc->attr.output = (enum lttng_ust_output) chan->attr.output; |
44d3bd01 DG |
180 | |
181 | /* Translate to UST output enum */ | |
182 | switch (luc->attr.output) { | |
183 | default: | |
184 | luc->attr.output = LTTNG_UST_MMAP; | |
185 | break; | |
97ee3a89 | 186 | } |
97ee3a89 | 187 | |
97ee3a89 | 188 | /* Copy channel name */ |
0a1459bb | 189 | strncpy(luc->name, chan->name, sizeof(luc->name)); |
97ee3a89 DG |
190 | luc->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; |
191 | ||
f6a9efaa | 192 | /* Init node */ |
bec39940 | 193 | lttng_ht_node_init_str(&luc->node, luc->name); |
f6a9efaa | 194 | /* Alloc hash tables */ |
bec39940 DG |
195 | luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
196 | luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
f6a9efaa | 197 | |
97ee3a89 | 198 | /* Set trace output path */ |
48842b30 | 199 | ret = snprintf(luc->pathname, PATH_MAX, "%s", path); |
97ee3a89 | 200 | if (ret < 0) { |
df0f840b | 201 | PERROR("asprintf ust create channel"); |
44844c29 | 202 | goto error_free_channel; |
97ee3a89 DG |
203 | } |
204 | ||
f6a9efaa DG |
205 | DBG2("Trace UST channel %s created", luc->name); |
206 | ||
97ee3a89 DG |
207 | return luc; |
208 | ||
44844c29 | 209 | error_free_channel: |
a2c0da86 MD |
210 | lttng_ht_destroy(luc->ctx); |
211 | lttng_ht_destroy(luc->events); | |
44844c29 | 212 | free(luc); |
97ee3a89 DG |
213 | error: |
214 | return NULL; | |
215 | } | |
216 | ||
217 | /* | |
218 | * Allocate and initialize a ust event. Set name and event type. | |
219 | * | |
220 | * Return pointer to structure or NULL. | |
221 | */ | |
222 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev) | |
223 | { | |
224 | struct ltt_ust_event *lue; | |
97ee3a89 | 225 | |
37357452 | 226 | lue = zmalloc(sizeof(struct ltt_ust_event)); |
44d3bd01 | 227 | if (lue == NULL) { |
ba7f0ae5 | 228 | PERROR("ust event zmalloc"); |
97ee3a89 DG |
229 | goto error; |
230 | } | |
231 | ||
232 | switch (ev->type) { | |
233 | case LTTNG_EVENT_PROBE: | |
44d3bd01 | 234 | lue->attr.instrumentation = LTTNG_UST_PROBE; |
97ee3a89 DG |
235 | break; |
236 | case LTTNG_EVENT_FUNCTION: | |
44d3bd01 | 237 | lue->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
238 | break; |
239 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
44d3bd01 | 240 | lue->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
241 | break; |
242 | case LTTNG_EVENT_TRACEPOINT: | |
44d3bd01 | 243 | lue->attr.instrumentation = LTTNG_UST_TRACEPOINT; |
97ee3a89 DG |
244 | break; |
245 | default: | |
246 | ERR("Unknown ust instrumentation type (%d)", ev->type); | |
44844c29 | 247 | goto error_free_event; |
97ee3a89 DG |
248 | } |
249 | ||
250 | /* Copy event name */ | |
44d3bd01 DG |
251 | strncpy(lue->attr.name, ev->name, LTTNG_UST_SYM_NAME_LEN); |
252 | lue->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
97ee3a89 | 253 | |
0cda4f28 | 254 | switch (ev->loglevel_type) { |
8005f29a MD |
255 | case LTTNG_EVENT_LOGLEVEL_ALL: |
256 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_ALL; | |
22e25b71 | 257 | lue->attr.loglevel = -1; /* Force to -1 */ |
0cda4f28 | 258 | break; |
8005f29a MD |
259 | case LTTNG_EVENT_LOGLEVEL_RANGE: |
260 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_RANGE; | |
22e25b71 | 261 | lue->attr.loglevel = ev->loglevel; |
8005f29a MD |
262 | break; |
263 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
264 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_SINGLE; | |
22e25b71 | 265 | lue->attr.loglevel = ev->loglevel; |
0cda4f28 MD |
266 | break; |
267 | default: | |
4431494b | 268 | ERR("Unknown ust loglevel type (%d)", ev->loglevel_type); |
0cda4f28 MD |
269 | goto error_free_event; |
270 | } | |
271 | ||
0cda4f28 | 272 | |
f6a9efaa | 273 | /* Init node */ |
bec39940 | 274 | lttng_ht_node_init_str(&lue->node, lue->attr.name); |
f6a9efaa | 275 | /* Alloc context hash tables */ |
bec39940 | 276 | lue->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); |
af061a47 DG |
277 | if (lue->ctx == NULL) { |
278 | ERR("Unable to create context hash table for event %s", ev->name); | |
279 | goto error_free_event; | |
280 | } | |
97ee3a89 | 281 | |
300b8fd5 MD |
282 | DBG2("Trace UST event %s, loglevel (%d,%d) created", |
283 | lue->attr.name, lue->attr.loglevel_type, | |
284 | lue->attr.loglevel); | |
284d8f55 | 285 | |
97ee3a89 DG |
286 | return lue; |
287 | ||
44844c29 MD |
288 | error_free_event: |
289 | free(lue); | |
97ee3a89 DG |
290 | error: |
291 | return NULL; | |
292 | } | |
293 | ||
294 | /* | |
295 | * Allocate and initialize a ust metadata. | |
296 | * | |
297 | * Return pointer to structure or NULL. | |
298 | */ | |
299 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path) | |
300 | { | |
301 | int ret; | |
302 | struct ltt_ust_metadata *lum; | |
97ee3a89 | 303 | |
3a009adb | 304 | lum = zmalloc(sizeof(struct ltt_ust_metadata)); |
44d3bd01 | 305 | if (lum == NULL) { |
df0f840b | 306 | PERROR("ust metadata zmalloc"); |
97ee3a89 DG |
307 | goto error; |
308 | } | |
309 | ||
310 | /* Set default attributes */ | |
44d3bd01 DG |
311 | lum->attr.overwrite = DEFAULT_CHANNEL_OVERWRITE; |
312 | lum->attr.subbuf_size = DEFAULT_METADATA_SUBBUF_SIZE; | |
313 | lum->attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM; | |
314 | lum->attr.switch_timer_interval = DEFAULT_CHANNEL_SWITCH_TIMER; | |
315 | lum->attr.read_timer_interval = DEFAULT_CHANNEL_READ_TIMER; | |
d41f73b7 | 316 | lum->attr.output = LTTNG_UST_MMAP; |
44d3bd01 | 317 | |
97ee3a89 DG |
318 | lum->handle = -1; |
319 | /* Set metadata trace path */ | |
f6a9efaa | 320 | ret = snprintf(lum->pathname, PATH_MAX, "%s/metadata", path); |
97ee3a89 | 321 | if (ret < 0) { |
df0f840b | 322 | PERROR("asprintf ust metadata"); |
44844c29 | 323 | goto error_free_metadata; |
97ee3a89 DG |
324 | } |
325 | ||
326 | return lum; | |
327 | ||
44844c29 MD |
328 | error_free_metadata: |
329 | free(lum); | |
97ee3a89 DG |
330 | error: |
331 | return NULL; | |
332 | } | |
333 | ||
55cc08a6 DG |
334 | /* |
335 | * Allocate and initialize an UST context. | |
336 | * | |
337 | * Return pointer to structure or NULL. | |
338 | */ | |
339 | struct ltt_ust_context *trace_ust_create_context( | |
340 | struct lttng_event_context *ctx) | |
341 | { | |
342 | struct ltt_ust_context *uctx; | |
9197c5c4 MD |
343 | enum lttng_ust_context_type utype; |
344 | ||
345 | switch (ctx->ctx) { | |
346 | case LTTNG_EVENT_CONTEXT_VTID: | |
347 | utype = LTTNG_UST_CONTEXT_VTID; | |
348 | break; | |
349 | case LTTNG_EVENT_CONTEXT_VPID: | |
350 | utype = LTTNG_UST_CONTEXT_VPID; | |
351 | break; | |
352 | case LTTNG_EVENT_CONTEXT_PTHREAD_ID: | |
353 | utype = LTTNG_UST_CONTEXT_PTHREAD_ID; | |
354 | break; | |
355 | case LTTNG_EVENT_CONTEXT_PROCNAME: | |
356 | utype = LTTNG_UST_CONTEXT_PROCNAME; | |
357 | break; | |
358 | default: | |
359 | ERR("Invalid UST context"); | |
360 | return NULL; | |
361 | } | |
55cc08a6 DG |
362 | |
363 | uctx = zmalloc(sizeof(struct ltt_ust_context)); | |
364 | if (uctx == NULL) { | |
365 | PERROR("zmalloc ltt_ust_context"); | |
366 | goto error; | |
367 | } | |
368 | ||
9197c5c4 | 369 | uctx->ctx.ctx = utype; |
bec39940 | 370 | lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx); |
55cc08a6 DG |
371 | |
372 | return uctx; | |
373 | ||
374 | error: | |
375 | return NULL; | |
376 | } | |
377 | ||
f6a9efaa DG |
378 | /* |
379 | * RCU safe free context structure. | |
380 | */ | |
381 | static void destroy_context_rcu(struct rcu_head *head) | |
382 | { | |
bec39940 DG |
383 | struct lttng_ht_node_ulong *node = |
384 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
f6a9efaa DG |
385 | struct ltt_ust_context *ctx = |
386 | caa_container_of(node, struct ltt_ust_context, node); | |
387 | ||
388 | free(ctx); | |
389 | } | |
390 | ||
391 | /* | |
392 | * Cleanup UST context hash table. | |
393 | */ | |
7bd39047 | 394 | static void destroy_contexts(struct lttng_ht *ht) |
f6a9efaa DG |
395 | { |
396 | int ret; | |
bec39940 DG |
397 | struct lttng_ht_node_ulong *node; |
398 | struct lttng_ht_iter iter; | |
f6a9efaa | 399 | |
bec39940 DG |
400 | cds_lfht_for_each_entry(ht->ht, &iter.iter, node, node) { |
401 | ret = lttng_ht_del(ht, &iter); | |
f6a9efaa DG |
402 | if (!ret) { |
403 | call_rcu(&node->head, destroy_context_rcu); | |
404 | } | |
f6a9efaa | 405 | } |
ed52805d | 406 | |
bec39940 | 407 | lttng_ht_destroy(ht); |
f6a9efaa DG |
408 | } |
409 | ||
97ee3a89 DG |
410 | /* |
411 | * Cleanup ust event structure. | |
412 | */ | |
413 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
414 | { | |
f6a9efaa | 415 | DBG2("Trace destroy UST event %s", event->attr.name); |
7bd39047 | 416 | destroy_contexts(event->ctx); |
53a80697 | 417 | free(event->filter); |
97ee3a89 DG |
418 | free(event); |
419 | } | |
420 | ||
f6a9efaa DG |
421 | /* |
422 | * URCU intermediate call to complete destroy event. | |
423 | */ | |
424 | static void destroy_event_rcu(struct rcu_head *head) | |
425 | { | |
bec39940 DG |
426 | struct lttng_ht_node_str *node = |
427 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
428 | struct ltt_ust_event *event = |
429 | caa_container_of(node, struct ltt_ust_event, node); | |
430 | ||
431 | trace_ust_destroy_event(event); | |
432 | } | |
433 | ||
284d8f55 DG |
434 | /* |
435 | * Cleanup UST events hashtable. | |
436 | */ | |
7bd39047 | 437 | static void destroy_events(struct lttng_ht *events) |
ed52805d DG |
438 | { |
439 | int ret; | |
bec39940 DG |
440 | struct lttng_ht_node_str *node; |
441 | struct lttng_ht_iter iter; | |
ed52805d | 442 | |
bec39940 DG |
443 | cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) { |
444 | ret = lttng_ht_del(events, &iter); | |
7bd39047 DG |
445 | assert(!ret); |
446 | call_rcu(&node->head, destroy_event_rcu); | |
ed52805d DG |
447 | } |
448 | ||
bec39940 | 449 | lttng_ht_destroy(events); |
ed52805d DG |
450 | } |
451 | ||
97ee3a89 DG |
452 | /* |
453 | * Cleanup ust channel structure. | |
454 | */ | |
455 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
456 | { | |
f6a9efaa | 457 | DBG2("Trace destroy UST channel %s", channel->name); |
97ee3a89 | 458 | |
f6a9efaa DG |
459 | rcu_read_lock(); |
460 | ||
7bd39047 DG |
461 | /* Destroying all events of the channel */ |
462 | destroy_events(channel->events); | |
463 | /* Destroying all context of the channel */ | |
464 | destroy_contexts(channel->ctx); | |
97ee3a89 | 465 | |
97ee3a89 | 466 | free(channel); |
f6a9efaa DG |
467 | |
468 | rcu_read_unlock(); | |
469 | } | |
470 | ||
471 | /* | |
472 | * URCU intermediate call to complete destroy channel. | |
473 | */ | |
474 | static void destroy_channel_rcu(struct rcu_head *head) | |
475 | { | |
bec39940 DG |
476 | struct lttng_ht_node_str *node = |
477 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
478 | struct ltt_ust_channel *channel = |
479 | caa_container_of(node, struct ltt_ust_channel, node); | |
480 | ||
481 | trace_ust_destroy_channel(channel); | |
97ee3a89 DG |
482 | } |
483 | ||
484 | /* | |
485 | * Cleanup ust metadata structure. | |
486 | */ | |
487 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata) | |
488 | { | |
abc9138a MD |
489 | if (!metadata->handle) { |
490 | return; | |
491 | } | |
f6a9efaa | 492 | DBG2("Trace UST destroy metadata %d", metadata->handle); |
97ee3a89 DG |
493 | free(metadata); |
494 | } | |
495 | ||
496 | /* | |
f6a9efaa | 497 | * Iterate over a hash table containing channels and cleanup safely. |
97ee3a89 | 498 | */ |
bec39940 | 499 | static void destroy_channels(struct lttng_ht *channels) |
f6a9efaa DG |
500 | { |
501 | int ret; | |
bec39940 DG |
502 | struct lttng_ht_node_str *node; |
503 | struct lttng_ht_iter iter; | |
f6a9efaa | 504 | |
24d1723f DG |
505 | rcu_read_lock(); |
506 | ||
bec39940 DG |
507 | cds_lfht_for_each_entry(channels->ht, &iter.iter, node, node) { |
508 | ret = lttng_ht_del(channels, &iter); | |
7bd39047 DG |
509 | assert(!ret); |
510 | call_rcu(&node->head, destroy_channel_rcu); | |
f6a9efaa | 511 | } |
ed52805d | 512 | |
bec39940 | 513 | lttng_ht_destroy(channels); |
24d1723f DG |
514 | |
515 | rcu_read_unlock(); | |
f6a9efaa DG |
516 | } |
517 | ||
518 | /* | |
519 | * Cleanup UST pid domain. | |
520 | */ | |
bec39940 | 521 | static void destroy_domain_pid(struct lttng_ht *ht) |
f6a9efaa DG |
522 | { |
523 | int ret; | |
bec39940 | 524 | struct lttng_ht_iter iter; |
ed52805d | 525 | struct ltt_ust_domain_pid *dpid; |
f6a9efaa | 526 | |
bec39940 DG |
527 | cds_lfht_for_each_entry(ht->ht, &iter.iter, dpid, node.node) { |
528 | ret = lttng_ht_del(ht , &iter); | |
7bd39047 DG |
529 | assert(!ret); |
530 | destroy_channels(dpid->channels); | |
f6a9efaa | 531 | } |
ed52805d | 532 | |
bec39940 | 533 | lttng_ht_destroy(ht); |
f6a9efaa DG |
534 | } |
535 | ||
536 | /* | |
537 | * Cleanup UST exec name domain. | |
538 | */ | |
bec39940 | 539 | static void destroy_domain_exec(struct lttng_ht *ht) |
97ee3a89 | 540 | { |
f6a9efaa | 541 | int ret; |
bec39940 | 542 | struct lttng_ht_iter iter; |
ed52805d | 543 | struct ltt_ust_domain_exec *dexec; |
f6a9efaa | 544 | |
bec39940 DG |
545 | cds_lfht_for_each_entry(ht->ht, &iter.iter, dexec, node.node) { |
546 | ret = lttng_ht_del(ht , &iter); | |
7bd39047 DG |
547 | assert(!ret); |
548 | destroy_channels(dexec->channels); | |
f6a9efaa | 549 | } |
ed52805d | 550 | |
bec39940 | 551 | lttng_ht_destroy(ht); |
f6a9efaa | 552 | } |
97ee3a89 | 553 | |
f6a9efaa DG |
554 | /* |
555 | * Cleanup UST global domain. | |
556 | */ | |
557 | static void destroy_domain_global(struct ltt_ust_domain_global *dom) | |
558 | { | |
559 | destroy_channels(dom->channels); | |
560 | } | |
97ee3a89 | 561 | |
f6a9efaa DG |
562 | /* |
563 | * Cleanup ust session structure | |
564 | */ | |
565 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
566 | { | |
ed52805d | 567 | /* Extra protection */ |
97ee3a89 DG |
568 | if (session == NULL) { |
569 | return; | |
570 | } | |
571 | ||
f6a9efaa DG |
572 | rcu_read_lock(); |
573 | ||
fc4705fe | 574 | DBG2("Trace UST destroy session %u", session->id); |
f6a9efaa | 575 | |
f6a9efaa DG |
576 | /* Cleaning up UST domain */ |
577 | destroy_domain_global(&session->domain_global); | |
578 | destroy_domain_pid(session->domain_pid); | |
579 | destroy_domain_exec(session->domain_exec); | |
44d3bd01 | 580 | |
3f8e211f DG |
581 | consumer_destroy_output(session->consumer); |
582 | consumer_destroy_output(session->tmp_consumer); | |
583 | ||
97ee3a89 | 584 | free(session); |
f6a9efaa DG |
585 | |
586 | rcu_read_unlock(); | |
97ee3a89 | 587 | } |