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 | |
0177d773 | 112 | /* Set session path */ |
48842b30 | 113 | ret = snprintf(lus->pathname, PATH_MAX, "%s/ust", path); |
0177d773 | 114 | if (ret < 0) { |
44d3bd01 | 115 | PERROR("snprintf kernel traces path"); |
44844c29 | 116 | goto error_free_session; |
0177d773 DG |
117 | } |
118 | ||
44d3bd01 DG |
119 | DBG2("UST trace session create successful"); |
120 | ||
97ee3a89 DG |
121 | return lus; |
122 | ||
44844c29 | 123 | error_free_session: |
a2c0da86 MD |
124 | lttng_ht_destroy(lus->domain_global.channels); |
125 | lttng_ht_destroy(lus->domain_exec); | |
126 | lttng_ht_destroy(lus->domain_pid); | |
44844c29 | 127 | free(lus); |
97ee3a89 DG |
128 | error: |
129 | return NULL; | |
130 | } | |
131 | ||
132 | /* | |
133 | * Allocate and initialize a ust channel data structure. | |
134 | * | |
135 | * Return pointer to structure or NULL. | |
136 | */ | |
44d3bd01 DG |
137 | struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan, |
138 | char *path) | |
97ee3a89 DG |
139 | { |
140 | int ret; | |
141 | struct ltt_ust_channel *luc; | |
142 | ||
37357452 | 143 | luc = zmalloc(sizeof(struct ltt_ust_channel)); |
97ee3a89 | 144 | if (luc == NULL) { |
df0f840b | 145 | PERROR("ltt_ust_channel zmalloc"); |
97ee3a89 DG |
146 | goto error; |
147 | } | |
148 | ||
44d3bd01 | 149 | /* Copy UST channel attributes */ |
48842b30 DG |
150 | luc->attr.overwrite = chan->attr.overwrite; |
151 | luc->attr.subbuf_size = chan->attr.subbuf_size; | |
152 | luc->attr.num_subbuf = chan->attr.num_subbuf; | |
153 | luc->attr.switch_timer_interval = chan->attr.switch_timer_interval; | |
154 | luc->attr.read_timer_interval = chan->attr.read_timer_interval; | |
155 | luc->attr.output = chan->attr.output; | |
44d3bd01 DG |
156 | |
157 | /* Translate to UST output enum */ | |
158 | switch (luc->attr.output) { | |
159 | default: | |
160 | luc->attr.output = LTTNG_UST_MMAP; | |
161 | break; | |
97ee3a89 | 162 | } |
97ee3a89 | 163 | |
97ee3a89 | 164 | /* Copy channel name */ |
0a1459bb | 165 | strncpy(luc->name, chan->name, sizeof(luc->name)); |
97ee3a89 DG |
166 | luc->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; |
167 | ||
f6a9efaa | 168 | /* Init node */ |
bec39940 | 169 | lttng_ht_node_init_str(&luc->node, luc->name); |
f6a9efaa | 170 | /* Alloc hash tables */ |
bec39940 DG |
171 | luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING); |
172 | luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
f6a9efaa | 173 | |
97ee3a89 | 174 | /* Set trace output path */ |
48842b30 | 175 | ret = snprintf(luc->pathname, PATH_MAX, "%s", path); |
97ee3a89 | 176 | if (ret < 0) { |
df0f840b | 177 | PERROR("asprintf ust create channel"); |
44844c29 | 178 | goto error_free_channel; |
97ee3a89 DG |
179 | } |
180 | ||
f6a9efaa DG |
181 | DBG2("Trace UST channel %s created", luc->name); |
182 | ||
97ee3a89 DG |
183 | return luc; |
184 | ||
44844c29 | 185 | error_free_channel: |
a2c0da86 MD |
186 | lttng_ht_destroy(luc->ctx); |
187 | lttng_ht_destroy(luc->events); | |
44844c29 | 188 | free(luc); |
97ee3a89 DG |
189 | error: |
190 | return NULL; | |
191 | } | |
192 | ||
193 | /* | |
194 | * Allocate and initialize a ust event. Set name and event type. | |
195 | * | |
196 | * Return pointer to structure or NULL. | |
197 | */ | |
198 | struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev) | |
199 | { | |
200 | struct ltt_ust_event *lue; | |
97ee3a89 | 201 | |
37357452 | 202 | lue = zmalloc(sizeof(struct ltt_ust_event)); |
44d3bd01 | 203 | if (lue == NULL) { |
ba7f0ae5 | 204 | PERROR("ust event zmalloc"); |
97ee3a89 DG |
205 | goto error; |
206 | } | |
207 | ||
208 | switch (ev->type) { | |
209 | case LTTNG_EVENT_PROBE: | |
44d3bd01 | 210 | lue->attr.instrumentation = LTTNG_UST_PROBE; |
97ee3a89 DG |
211 | break; |
212 | case LTTNG_EVENT_FUNCTION: | |
44d3bd01 | 213 | lue->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
214 | break; |
215 | case LTTNG_EVENT_FUNCTION_ENTRY: | |
44d3bd01 | 216 | lue->attr.instrumentation = LTTNG_UST_FUNCTION; |
97ee3a89 DG |
217 | break; |
218 | case LTTNG_EVENT_TRACEPOINT: | |
44d3bd01 | 219 | lue->attr.instrumentation = LTTNG_UST_TRACEPOINT; |
97ee3a89 DG |
220 | break; |
221 | default: | |
222 | ERR("Unknown ust instrumentation type (%d)", ev->type); | |
44844c29 | 223 | goto error_free_event; |
97ee3a89 DG |
224 | } |
225 | ||
226 | /* Copy event name */ | |
44d3bd01 DG |
227 | strncpy(lue->attr.name, ev->name, LTTNG_UST_SYM_NAME_LEN); |
228 | lue->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0'; | |
97ee3a89 | 229 | |
0cda4f28 | 230 | switch (ev->loglevel_type) { |
8005f29a MD |
231 | case LTTNG_EVENT_LOGLEVEL_ALL: |
232 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_ALL; | |
22e25b71 | 233 | lue->attr.loglevel = -1; /* Force to -1 */ |
0cda4f28 | 234 | break; |
8005f29a MD |
235 | case LTTNG_EVENT_LOGLEVEL_RANGE: |
236 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_RANGE; | |
22e25b71 | 237 | lue->attr.loglevel = ev->loglevel; |
8005f29a MD |
238 | break; |
239 | case LTTNG_EVENT_LOGLEVEL_SINGLE: | |
240 | lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_SINGLE; | |
22e25b71 | 241 | lue->attr.loglevel = ev->loglevel; |
0cda4f28 MD |
242 | break; |
243 | default: | |
4431494b | 244 | ERR("Unknown ust loglevel type (%d)", ev->loglevel_type); |
0cda4f28 MD |
245 | goto error_free_event; |
246 | } | |
247 | ||
0cda4f28 | 248 | |
f6a9efaa | 249 | /* Init node */ |
bec39940 | 250 | lttng_ht_node_init_str(&lue->node, lue->attr.name); |
f6a9efaa | 251 | /* Alloc context hash tables */ |
bec39940 | 252 | lue->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); |
af061a47 DG |
253 | if (lue->ctx == NULL) { |
254 | ERR("Unable to create context hash table for event %s", ev->name); | |
255 | goto error_free_event; | |
256 | } | |
97ee3a89 | 257 | |
300b8fd5 MD |
258 | DBG2("Trace UST event %s, loglevel (%d,%d) created", |
259 | lue->attr.name, lue->attr.loglevel_type, | |
260 | lue->attr.loglevel); | |
284d8f55 | 261 | |
97ee3a89 DG |
262 | return lue; |
263 | ||
44844c29 MD |
264 | error_free_event: |
265 | free(lue); | |
97ee3a89 DG |
266 | error: |
267 | return NULL; | |
268 | } | |
269 | ||
270 | /* | |
271 | * Allocate and initialize a ust metadata. | |
272 | * | |
273 | * Return pointer to structure or NULL. | |
274 | */ | |
275 | struct ltt_ust_metadata *trace_ust_create_metadata(char *path) | |
276 | { | |
277 | int ret; | |
278 | struct ltt_ust_metadata *lum; | |
97ee3a89 | 279 | |
3a009adb | 280 | lum = zmalloc(sizeof(struct ltt_ust_metadata)); |
44d3bd01 | 281 | if (lum == NULL) { |
df0f840b | 282 | PERROR("ust metadata zmalloc"); |
97ee3a89 DG |
283 | goto error; |
284 | } | |
285 | ||
286 | /* Set default attributes */ | |
44d3bd01 DG |
287 | lum->attr.overwrite = DEFAULT_CHANNEL_OVERWRITE; |
288 | lum->attr.subbuf_size = DEFAULT_METADATA_SUBBUF_SIZE; | |
289 | lum->attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM; | |
290 | lum->attr.switch_timer_interval = DEFAULT_CHANNEL_SWITCH_TIMER; | |
291 | lum->attr.read_timer_interval = DEFAULT_CHANNEL_READ_TIMER; | |
d41f73b7 | 292 | lum->attr.output = LTTNG_UST_MMAP; |
44d3bd01 | 293 | |
97ee3a89 DG |
294 | lum->handle = -1; |
295 | /* Set metadata trace path */ | |
f6a9efaa | 296 | ret = snprintf(lum->pathname, PATH_MAX, "%s/metadata", path); |
97ee3a89 | 297 | if (ret < 0) { |
df0f840b | 298 | PERROR("asprintf ust metadata"); |
44844c29 | 299 | goto error_free_metadata; |
97ee3a89 DG |
300 | } |
301 | ||
302 | return lum; | |
303 | ||
44844c29 MD |
304 | error_free_metadata: |
305 | free(lum); | |
97ee3a89 DG |
306 | error: |
307 | return NULL; | |
308 | } | |
309 | ||
55cc08a6 DG |
310 | /* |
311 | * Allocate and initialize an UST context. | |
312 | * | |
313 | * Return pointer to structure or NULL. | |
314 | */ | |
315 | struct ltt_ust_context *trace_ust_create_context( | |
316 | struct lttng_event_context *ctx) | |
317 | { | |
318 | struct ltt_ust_context *uctx; | |
9197c5c4 MD |
319 | enum lttng_ust_context_type utype; |
320 | ||
321 | switch (ctx->ctx) { | |
322 | case LTTNG_EVENT_CONTEXT_VTID: | |
323 | utype = LTTNG_UST_CONTEXT_VTID; | |
324 | break; | |
325 | case LTTNG_EVENT_CONTEXT_VPID: | |
326 | utype = LTTNG_UST_CONTEXT_VPID; | |
327 | break; | |
328 | case LTTNG_EVENT_CONTEXT_PTHREAD_ID: | |
329 | utype = LTTNG_UST_CONTEXT_PTHREAD_ID; | |
330 | break; | |
331 | case LTTNG_EVENT_CONTEXT_PROCNAME: | |
332 | utype = LTTNG_UST_CONTEXT_PROCNAME; | |
333 | break; | |
334 | default: | |
335 | ERR("Invalid UST context"); | |
336 | return NULL; | |
337 | } | |
55cc08a6 DG |
338 | |
339 | uctx = zmalloc(sizeof(struct ltt_ust_context)); | |
340 | if (uctx == NULL) { | |
341 | PERROR("zmalloc ltt_ust_context"); | |
342 | goto error; | |
343 | } | |
344 | ||
9197c5c4 | 345 | uctx->ctx.ctx = utype; |
bec39940 | 346 | lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx); |
55cc08a6 DG |
347 | |
348 | return uctx; | |
349 | ||
350 | error: | |
351 | return NULL; | |
352 | } | |
353 | ||
f6a9efaa DG |
354 | /* |
355 | * RCU safe free context structure. | |
356 | */ | |
357 | static void destroy_context_rcu(struct rcu_head *head) | |
358 | { | |
bec39940 DG |
359 | struct lttng_ht_node_ulong *node = |
360 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
f6a9efaa DG |
361 | struct ltt_ust_context *ctx = |
362 | caa_container_of(node, struct ltt_ust_context, node); | |
363 | ||
364 | free(ctx); | |
365 | } | |
366 | ||
367 | /* | |
368 | * Cleanup UST context hash table. | |
369 | */ | |
7bd39047 | 370 | static void destroy_contexts(struct lttng_ht *ht) |
f6a9efaa DG |
371 | { |
372 | int ret; | |
bec39940 DG |
373 | struct lttng_ht_node_ulong *node; |
374 | struct lttng_ht_iter iter; | |
f6a9efaa | 375 | |
bec39940 DG |
376 | cds_lfht_for_each_entry(ht->ht, &iter.iter, node, node) { |
377 | ret = lttng_ht_del(ht, &iter); | |
f6a9efaa DG |
378 | if (!ret) { |
379 | call_rcu(&node->head, destroy_context_rcu); | |
380 | } | |
f6a9efaa | 381 | } |
ed52805d | 382 | |
bec39940 | 383 | lttng_ht_destroy(ht); |
f6a9efaa DG |
384 | } |
385 | ||
97ee3a89 DG |
386 | /* |
387 | * Cleanup ust event structure. | |
388 | */ | |
389 | void trace_ust_destroy_event(struct ltt_ust_event *event) | |
390 | { | |
f6a9efaa | 391 | DBG2("Trace destroy UST event %s", event->attr.name); |
7bd39047 | 392 | destroy_contexts(event->ctx); |
ed52805d | 393 | |
97ee3a89 DG |
394 | free(event); |
395 | } | |
396 | ||
f6a9efaa DG |
397 | /* |
398 | * URCU intermediate call to complete destroy event. | |
399 | */ | |
400 | static void destroy_event_rcu(struct rcu_head *head) | |
401 | { | |
bec39940 DG |
402 | struct lttng_ht_node_str *node = |
403 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
404 | struct ltt_ust_event *event = |
405 | caa_container_of(node, struct ltt_ust_event, node); | |
406 | ||
407 | trace_ust_destroy_event(event); | |
408 | } | |
409 | ||
284d8f55 DG |
410 | /* |
411 | * Cleanup UST events hashtable. | |
412 | */ | |
7bd39047 | 413 | static void destroy_events(struct lttng_ht *events) |
ed52805d DG |
414 | { |
415 | int ret; | |
bec39940 DG |
416 | struct lttng_ht_node_str *node; |
417 | struct lttng_ht_iter iter; | |
ed52805d | 418 | |
bec39940 DG |
419 | cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) { |
420 | ret = lttng_ht_del(events, &iter); | |
7bd39047 DG |
421 | assert(!ret); |
422 | call_rcu(&node->head, destroy_event_rcu); | |
ed52805d DG |
423 | } |
424 | ||
bec39940 | 425 | lttng_ht_destroy(events); |
ed52805d DG |
426 | } |
427 | ||
97ee3a89 DG |
428 | /* |
429 | * Cleanup ust channel structure. | |
430 | */ | |
431 | void trace_ust_destroy_channel(struct ltt_ust_channel *channel) | |
432 | { | |
f6a9efaa | 433 | DBG2("Trace destroy UST channel %s", channel->name); |
97ee3a89 | 434 | |
f6a9efaa DG |
435 | rcu_read_lock(); |
436 | ||
7bd39047 DG |
437 | /* Destroying all events of the channel */ |
438 | destroy_events(channel->events); | |
439 | /* Destroying all context of the channel */ | |
440 | destroy_contexts(channel->ctx); | |
97ee3a89 | 441 | |
97ee3a89 | 442 | free(channel); |
f6a9efaa DG |
443 | |
444 | rcu_read_unlock(); | |
445 | } | |
446 | ||
447 | /* | |
448 | * URCU intermediate call to complete destroy channel. | |
449 | */ | |
450 | static void destroy_channel_rcu(struct rcu_head *head) | |
451 | { | |
bec39940 DG |
452 | struct lttng_ht_node_str *node = |
453 | caa_container_of(head, struct lttng_ht_node_str, head); | |
f6a9efaa DG |
454 | struct ltt_ust_channel *channel = |
455 | caa_container_of(node, struct ltt_ust_channel, node); | |
456 | ||
457 | trace_ust_destroy_channel(channel); | |
97ee3a89 DG |
458 | } |
459 | ||
460 | /* | |
461 | * Cleanup ust metadata structure. | |
462 | */ | |
463 | void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata) | |
464 | { | |
abc9138a MD |
465 | if (!metadata->handle) { |
466 | return; | |
467 | } | |
f6a9efaa | 468 | DBG2("Trace UST destroy metadata %d", metadata->handle); |
97ee3a89 DG |
469 | free(metadata); |
470 | } | |
471 | ||
472 | /* | |
f6a9efaa | 473 | * Iterate over a hash table containing channels and cleanup safely. |
97ee3a89 | 474 | */ |
bec39940 | 475 | static void destroy_channels(struct lttng_ht *channels) |
f6a9efaa DG |
476 | { |
477 | int ret; | |
bec39940 DG |
478 | struct lttng_ht_node_str *node; |
479 | struct lttng_ht_iter iter; | |
f6a9efaa | 480 | |
24d1723f DG |
481 | rcu_read_lock(); |
482 | ||
bec39940 DG |
483 | cds_lfht_for_each_entry(channels->ht, &iter.iter, node, node) { |
484 | ret = lttng_ht_del(channels, &iter); | |
7bd39047 DG |
485 | assert(!ret); |
486 | call_rcu(&node->head, destroy_channel_rcu); | |
f6a9efaa | 487 | } |
ed52805d | 488 | |
bec39940 | 489 | lttng_ht_destroy(channels); |
24d1723f DG |
490 | |
491 | rcu_read_unlock(); | |
f6a9efaa DG |
492 | } |
493 | ||
494 | /* | |
495 | * Cleanup UST pid domain. | |
496 | */ | |
bec39940 | 497 | static void destroy_domain_pid(struct lttng_ht *ht) |
f6a9efaa DG |
498 | { |
499 | int ret; | |
bec39940 | 500 | struct lttng_ht_iter iter; |
ed52805d | 501 | struct ltt_ust_domain_pid *dpid; |
f6a9efaa | 502 | |
bec39940 DG |
503 | cds_lfht_for_each_entry(ht->ht, &iter.iter, dpid, node.node) { |
504 | ret = lttng_ht_del(ht , &iter); | |
7bd39047 DG |
505 | assert(!ret); |
506 | destroy_channels(dpid->channels); | |
f6a9efaa | 507 | } |
ed52805d | 508 | |
bec39940 | 509 | lttng_ht_destroy(ht); |
f6a9efaa DG |
510 | } |
511 | ||
512 | /* | |
513 | * Cleanup UST exec name domain. | |
514 | */ | |
bec39940 | 515 | static void destroy_domain_exec(struct lttng_ht *ht) |
97ee3a89 | 516 | { |
f6a9efaa | 517 | int ret; |
bec39940 | 518 | struct lttng_ht_iter iter; |
ed52805d | 519 | struct ltt_ust_domain_exec *dexec; |
f6a9efaa | 520 | |
bec39940 DG |
521 | cds_lfht_for_each_entry(ht->ht, &iter.iter, dexec, node.node) { |
522 | ret = lttng_ht_del(ht , &iter); | |
7bd39047 DG |
523 | assert(!ret); |
524 | destroy_channels(dexec->channels); | |
f6a9efaa | 525 | } |
ed52805d | 526 | |
bec39940 | 527 | lttng_ht_destroy(ht); |
f6a9efaa | 528 | } |
97ee3a89 | 529 | |
f6a9efaa DG |
530 | /* |
531 | * Cleanup UST global domain. | |
532 | */ | |
533 | static void destroy_domain_global(struct ltt_ust_domain_global *dom) | |
534 | { | |
535 | destroy_channels(dom->channels); | |
536 | } | |
97ee3a89 | 537 | |
f6a9efaa DG |
538 | /* |
539 | * Cleanup ust session structure | |
540 | */ | |
541 | void trace_ust_destroy_session(struct ltt_ust_session *session) | |
542 | { | |
ed52805d | 543 | /* Extra protection */ |
97ee3a89 DG |
544 | if (session == NULL) { |
545 | return; | |
546 | } | |
547 | ||
f6a9efaa DG |
548 | rcu_read_lock(); |
549 | ||
fc4705fe | 550 | DBG2("Trace UST destroy session %u", session->id); |
f6a9efaa | 551 | |
f6a9efaa DG |
552 | /* Cleaning up UST domain */ |
553 | destroy_domain_global(&session->domain_global); | |
554 | destroy_domain_pid(session->domain_pid); | |
555 | destroy_domain_exec(session->domain_exec); | |
44d3bd01 | 556 | |
97ee3a89 | 557 | free(session); |
f6a9efaa DG |
558 | |
559 | rcu_read_unlock(); | |
97ee3a89 | 560 | } |