Fix RCU-related hangs: incorrect lttng_ht_destroy use
[lttng-tools.git] / src / bin / lttng-sessiond / trace-ust.c
CommitLineData
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1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
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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 *
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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 *
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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.
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16 */
17
18#define _GNU_SOURCE
19#include <stdio.h>
20#include <stdlib.h>
21#include <string.h>
22#include <unistd.h>
23
990570ed
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24#include <common/common.h>
25#include <common/defaults.h>
97ee3a89 26
7972aab2 27#include "buffer-registry.h"
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28#include "trace-ust.h"
29
025faf73
DG
30/*
31 * Match function for the events hash table lookup.
32 *
33 * Matches by name only. Used by the disable command.
34 */
18eace3b
DG
35int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node,
36 const void *_key)
37{
38 struct ltt_ust_event *event;
39 const char *name;
40
41 assert(node);
42 assert(_key);
43
44 event = caa_container_of(node, struct ltt_ust_event, node.node);
45 name = _key;
46
47 /* Event name */
48 if (strncmp(event->attr.name, name, sizeof(event->attr.name)) != 0) {
49 goto no_match;
50 }
51
025faf73 52 /* Match */
18eace3b
DG
53 return 1;
54
55no_match:
56 return 0;
57}
58
025faf73
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59/*
60 * Match function for the hash table lookup.
61 *
62 * It matches an ust event based on three attributes which are the event name,
63 * the filter bytecode and the loglevel.
64 */
18eace3b
DG
65int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key)
66{
67 struct ltt_ust_event *event;
68 const struct ltt_ust_ht_key *key;
69
70 assert(node);
71 assert(_key);
72
73 event = caa_container_of(node, struct ltt_ust_event, node.node);
74 key = _key;
75
76 /* Match the 3 elements of the key: name, filter and loglevel. */
77
78 /* Event name */
79 if (strncmp(event->attr.name, key->name, sizeof(event->attr.name)) != 0) {
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80 goto no_match;
81 }
82
83 /* Event loglevel. */
84 if (event->attr.loglevel != key->loglevel) {
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85 if (event->attr.loglevel_type == LTTNG_UST_LOGLEVEL_ALL
86 && key->loglevel == 0 && event->attr.loglevel == -1) {
18eace3b 87 /*
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88 * Match is accepted. This is because on event creation, the
89 * loglevel is set to -1 if the event loglevel type is ALL so 0 and
90 * -1 are accepted for this loglevel type since 0 is the one set by
91 * the API when receiving an enable event.
18eace3b
DG
92 */
93 } else {
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94 goto no_match;
95 }
96 }
97
98 /* Only one of the filters is NULL, fail. */
99 if ((key->filter && !event->filter) || (!key->filter && event->filter)) {
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100 goto no_match;
101 }
102
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103 if (key->filter && event->filter) {
104 /* Both filters exists, check length followed by the bytecode. */
105 if (event->filter->len != key->filter->len ||
106 memcmp(event->filter->data, key->filter->data,
107 event->filter->len) != 0) {
108 goto no_match;
109 }
18eace3b
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110 }
111
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112 /* Match. */
113 return 1;
18eace3b
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114
115no_match:
116 return 0;
18eace3b
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117}
118
0177d773 119/*
2223c96f
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120 * Find the channel in the hashtable and return channel pointer. RCU read side
121 * lock MUST be acquired before calling this.
0177d773 122 */
bec39940 123struct ltt_ust_channel *trace_ust_find_channel_by_name(struct lttng_ht *ht,
f6a9efaa 124 char *name)
0177d773 125{
bec39940
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126 struct lttng_ht_node_str *node;
127 struct lttng_ht_iter iter;
0177d773 128
bec39940
DG
129 lttng_ht_lookup(ht, (void *)name, &iter);
130 node = lttng_ht_iter_get_node_str(&iter);
f6a9efaa 131 if (node == NULL) {
44d3bd01
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132 goto error;
133 }
134
f6a9efaa 135 DBG2("Trace UST channel %s found by name", name);
0177d773 136
f6a9efaa 137 return caa_container_of(node, struct ltt_ust_channel, node);
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138
139error:
f6a9efaa 140 DBG2("Trace UST channel %s not found by name", name);
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141 return NULL;
142}
143
144/*
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145 * Find the event in the hashtable and return event pointer. RCU read side lock
146 * MUST be acquired before calling this.
97ee3a89 147 */
18eace3b
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148struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht,
149 char *name, struct lttng_filter_bytecode *filter, int loglevel)
97ee3a89 150{
bec39940
DG
151 struct lttng_ht_node_str *node;
152 struct lttng_ht_iter iter;
18eace3b 153 struct ltt_ust_ht_key key;
97ee3a89 154
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DG
155 assert(name);
156 assert(ht);
157
158 key.name = name;
159 key.filter = filter;
160 key.loglevel = loglevel;
161
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162 cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed),
163 trace_ust_ht_match_event, &key, &iter.iter);
bec39940 164 node = lttng_ht_iter_get_node_str(&iter);
f6a9efaa 165 if (node == NULL) {
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166 goto error;
167 }
168
18eace3b 169 DBG2("Trace UST event %s found", key.name);
f6a9efaa
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170
171 return caa_container_of(node, struct ltt_ust_event, node);
97ee3a89
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172
173error:
18eace3b 174 DBG2("Trace UST event %s NOT found", key.name);
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175 return NULL;
176}
177
178/*
179 * Allocate and initialize a ust session data structure.
180 *
181 * Return pointer to structure or NULL.
182 */
dec56f6c 183struct ltt_ust_session *trace_ust_create_session(unsigned int session_id)
97ee3a89
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184{
185 struct ltt_ust_session *lus;
186
187 /* Allocate a new ltt ust session */
ba7f0ae5 188 lus = zmalloc(sizeof(struct ltt_ust_session));
97ee3a89 189 if (lus == NULL) {
ba7f0ae5 190 PERROR("create ust session zmalloc");
97ee3a89
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191 goto error;
192 }
193
194 /* Init data structure */
a991f516 195 lus->id = session_id;
36dc12cc 196 lus->start_trace = 0;
97ee3a89 197
7972aab2
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198 /*
199 * Default buffer type. This can be changed through an enable channel
200 * requesting a different type. Note that this can only be changed once
201 * during the session lifetime which is at the first enable channel and
202 * only before start. The flag buffer_type_changed indicates the status.
203 */
204 lus->buffer_type = LTTNG_BUFFER_PER_PID;
205 /* Once set to 1, the buffer_type is immutable for the session. */
206 lus->buffer_type_changed = 0;
207 /* Init it in case it get used after allocation. */
208 CDS_INIT_LIST_HEAD(&lus->buffer_reg_uid_list);
f6a9efaa
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209
210 /* Alloc UST global domain channels' HT */
bec39940 211 lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING);
44d3bd01 212
00e2e675
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213 lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL);
214 if (lus->consumer == NULL) {
09a90bcd 215 goto error_consumer;
00e2e675
DG
216 }
217
218 /*
219 * The tmp_consumer stays NULL until a set_consumer_uri command is
220 * executed. At this point, the consumer should be nullify until an
221 * enable_consumer command. This assignment is symbolic since we've zmalloc
222 * the struct.
223 */
224 lus->tmp_consumer = NULL;
225
44d3bd01
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226 DBG2("UST trace session create successful");
227
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228 return lus;
229
09a90bcd 230error_consumer:
a2c0da86 231 lttng_ht_destroy(lus->domain_global.channels);
44844c29 232 free(lus);
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233error:
234 return NULL;
235}
236
237/*
238 * Allocate and initialize a ust channel data structure.
239 *
240 * Return pointer to structure or NULL.
241 */
dec56f6c 242struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan)
97ee3a89 243{
97ee3a89
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244 struct ltt_ust_channel *luc;
245
0525e9ae 246 assert(chan);
0525e9ae 247
37357452 248 luc = zmalloc(sizeof(struct ltt_ust_channel));
97ee3a89 249 if (luc == NULL) {
df0f840b 250 PERROR("ltt_ust_channel zmalloc");
97ee3a89
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251 goto error;
252 }
253
44d3bd01 254 /* Copy UST channel attributes */
48842b30
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255 luc->attr.overwrite = chan->attr.overwrite;
256 luc->attr.subbuf_size = chan->attr.subbuf_size;
257 luc->attr.num_subbuf = chan->attr.num_subbuf;
258 luc->attr.switch_timer_interval = chan->attr.switch_timer_interval;
259 luc->attr.read_timer_interval = chan->attr.read_timer_interval;
6775595e 260 luc->attr.output = (enum lttng_ust_output) chan->attr.output;
44d3bd01
DG
261
262 /* Translate to UST output enum */
263 switch (luc->attr.output) {
264 default:
265 luc->attr.output = LTTNG_UST_MMAP;
266 break;
97ee3a89 267 }
97ee3a89 268
97ee3a89 269 /* Copy channel name */
0a1459bb 270 strncpy(luc->name, chan->name, sizeof(luc->name));
97ee3a89
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271 luc->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
272
f6a9efaa 273 /* Init node */
bec39940 274 lttng_ht_node_init_str(&luc->node, luc->name);
f6a9efaa 275 /* Alloc hash tables */
bec39940
DG
276 luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING);
277 luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
f6a9efaa 278
1624d5b7
JD
279 /* On-disk circular buffer parameters */
280 luc->tracefile_size = chan->attr.tracefile_size;
281 luc->tracefile_count = chan->attr.tracefile_count;
282
f6a9efaa
DG
283 DBG2("Trace UST channel %s created", luc->name);
284
97ee3a89 285error:
7972aab2 286 return luc;
97ee3a89
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287}
288
289/*
290 * Allocate and initialize a ust event. Set name and event type.
291 *
292 * Return pointer to structure or NULL.
293 */
025faf73
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294struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev,
295 struct lttng_filter_bytecode *filter)
97ee3a89
DG
296{
297 struct ltt_ust_event *lue;
97ee3a89 298
0525e9ae
DG
299 assert(ev);
300
37357452 301 lue = zmalloc(sizeof(struct ltt_ust_event));
44d3bd01 302 if (lue == NULL) {
ba7f0ae5 303 PERROR("ust event zmalloc");
97ee3a89
DG
304 goto error;
305 }
306
307 switch (ev->type) {
308 case LTTNG_EVENT_PROBE:
44d3bd01 309 lue->attr.instrumentation = LTTNG_UST_PROBE;
97ee3a89
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310 break;
311 case LTTNG_EVENT_FUNCTION:
44d3bd01 312 lue->attr.instrumentation = LTTNG_UST_FUNCTION;
97ee3a89
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313 break;
314 case LTTNG_EVENT_FUNCTION_ENTRY:
44d3bd01 315 lue->attr.instrumentation = LTTNG_UST_FUNCTION;
97ee3a89
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316 break;
317 case LTTNG_EVENT_TRACEPOINT:
44d3bd01 318 lue->attr.instrumentation = LTTNG_UST_TRACEPOINT;
97ee3a89
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319 break;
320 default:
321 ERR("Unknown ust instrumentation type (%d)", ev->type);
44844c29 322 goto error_free_event;
97ee3a89
DG
323 }
324
325 /* Copy event name */
44d3bd01
DG
326 strncpy(lue->attr.name, ev->name, LTTNG_UST_SYM_NAME_LEN);
327 lue->attr.name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
97ee3a89 328
0cda4f28 329 switch (ev->loglevel_type) {
8005f29a
MD
330 case LTTNG_EVENT_LOGLEVEL_ALL:
331 lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_ALL;
22e25b71 332 lue->attr.loglevel = -1; /* Force to -1 */
0cda4f28 333 break;
8005f29a
MD
334 case LTTNG_EVENT_LOGLEVEL_RANGE:
335 lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_RANGE;
22e25b71 336 lue->attr.loglevel = ev->loglevel;
8005f29a
MD
337 break;
338 case LTTNG_EVENT_LOGLEVEL_SINGLE:
339 lue->attr.loglevel_type = LTTNG_UST_LOGLEVEL_SINGLE;
22e25b71 340 lue->attr.loglevel = ev->loglevel;
0cda4f28
MD
341 break;
342 default:
4431494b 343 ERR("Unknown ust loglevel type (%d)", ev->loglevel_type);
0cda4f28
MD
344 goto error_free_event;
345 }
346
025faf73
DG
347 /* Same layout. */
348 lue->filter = (struct lttng_ust_filter_bytecode *) filter;
0cda4f28 349
f6a9efaa 350 /* Init node */
bec39940 351 lttng_ht_node_init_str(&lue->node, lue->attr.name);
97ee3a89 352
300b8fd5
MD
353 DBG2("Trace UST event %s, loglevel (%d,%d) created",
354 lue->attr.name, lue->attr.loglevel_type,
355 lue->attr.loglevel);
284d8f55 356
97ee3a89
DG
357 return lue;
358
44844c29
MD
359error_free_event:
360 free(lue);
97ee3a89
DG
361error:
362 return NULL;
363}
364
365/*
366 * Allocate and initialize a ust metadata.
367 *
368 * Return pointer to structure or NULL.
369 */
370struct ltt_ust_metadata *trace_ust_create_metadata(char *path)
371{
372 int ret;
373 struct ltt_ust_metadata *lum;
97ee3a89 374
0525e9ae
DG
375 assert(path);
376
3a009adb 377 lum = zmalloc(sizeof(struct ltt_ust_metadata));
44d3bd01 378 if (lum == NULL) {
df0f840b 379 PERROR("ust metadata zmalloc");
97ee3a89
DG
380 goto error;
381 }
382
383 /* Set default attributes */
44d3bd01 384 lum->attr.overwrite = DEFAULT_CHANNEL_OVERWRITE;
3e230f92 385 lum->attr.subbuf_size = default_get_metadata_subbuf_size();
44d3bd01 386 lum->attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM;
6bb9e85f
MD
387 lum->attr.switch_timer_interval = DEFAULT_UST_CHANNEL_SWITCH_TIMER;
388 lum->attr.read_timer_interval = DEFAULT_UST_CHANNEL_READ_TIMER;
d41f73b7 389 lum->attr.output = LTTNG_UST_MMAP;
44d3bd01 390
97ee3a89
DG
391 lum->handle = -1;
392 /* Set metadata trace path */
30079b6b 393 ret = snprintf(lum->pathname, PATH_MAX, "%s/" DEFAULT_METADATA_NAME, path);
97ee3a89 394 if (ret < 0) {
df0f840b 395 PERROR("asprintf ust metadata");
44844c29 396 goto error_free_metadata;
97ee3a89
DG
397 }
398
399 return lum;
400
44844c29
MD
401error_free_metadata:
402 free(lum);
97ee3a89
DG
403error:
404 return NULL;
405}
406
55cc08a6
DG
407/*
408 * Allocate and initialize an UST context.
409 *
410 * Return pointer to structure or NULL.
411 */
412struct ltt_ust_context *trace_ust_create_context(
413 struct lttng_event_context *ctx)
414{
415 struct ltt_ust_context *uctx;
9197c5c4
MD
416 enum lttng_ust_context_type utype;
417
0525e9ae
DG
418 assert(ctx);
419
9197c5c4
MD
420 switch (ctx->ctx) {
421 case LTTNG_EVENT_CONTEXT_VTID:
422 utype = LTTNG_UST_CONTEXT_VTID;
423 break;
424 case LTTNG_EVENT_CONTEXT_VPID:
425 utype = LTTNG_UST_CONTEXT_VPID;
426 break;
427 case LTTNG_EVENT_CONTEXT_PTHREAD_ID:
428 utype = LTTNG_UST_CONTEXT_PTHREAD_ID;
429 break;
430 case LTTNG_EVENT_CONTEXT_PROCNAME:
431 utype = LTTNG_UST_CONTEXT_PROCNAME;
432 break;
433 default:
434 ERR("Invalid UST context");
435 return NULL;
436 }
55cc08a6
DG
437
438 uctx = zmalloc(sizeof(struct ltt_ust_context));
439 if (uctx == NULL) {
440 PERROR("zmalloc ltt_ust_context");
441 goto error;
442 }
443
9197c5c4 444 uctx->ctx.ctx = utype;
bec39940 445 lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx);
55cc08a6
DG
446
447 return uctx;
448
449error:
450 return NULL;
451}
452
f6a9efaa
DG
453/*
454 * RCU safe free context structure.
455 */
456static void destroy_context_rcu(struct rcu_head *head)
457{
bec39940
DG
458 struct lttng_ht_node_ulong *node =
459 caa_container_of(head, struct lttng_ht_node_ulong, head);
f6a9efaa
DG
460 struct ltt_ust_context *ctx =
461 caa_container_of(node, struct ltt_ust_context, node);
462
463 free(ctx);
464}
465
466/*
467 * Cleanup UST context hash table.
468 */
7bd39047 469static void destroy_contexts(struct lttng_ht *ht)
f6a9efaa
DG
470{
471 int ret;
bec39940
DG
472 struct lttng_ht_node_ulong *node;
473 struct lttng_ht_iter iter;
f6a9efaa 474
0525e9ae
DG
475 assert(ht);
476
36b588ed 477 rcu_read_lock();
bec39940
DG
478 cds_lfht_for_each_entry(ht->ht, &iter.iter, node, node) {
479 ret = lttng_ht_del(ht, &iter);
f6a9efaa
DG
480 if (!ret) {
481 call_rcu(&node->head, destroy_context_rcu);
482 }
f6a9efaa 483 }
36b588ed 484 rcu_read_unlock();
ed52805d 485
bec39940 486 lttng_ht_destroy(ht);
f6a9efaa
DG
487}
488
97ee3a89
DG
489/*
490 * Cleanup ust event structure.
491 */
492void trace_ust_destroy_event(struct ltt_ust_event *event)
493{
0525e9ae
DG
494 assert(event);
495
f6a9efaa 496 DBG2("Trace destroy UST event %s", event->attr.name);
53a80697 497 free(event->filter);
97ee3a89
DG
498 free(event);
499}
500
f6a9efaa
DG
501/*
502 * URCU intermediate call to complete destroy event.
503 */
504static void destroy_event_rcu(struct rcu_head *head)
505{
bec39940
DG
506 struct lttng_ht_node_str *node =
507 caa_container_of(head, struct lttng_ht_node_str, head);
f6a9efaa
DG
508 struct ltt_ust_event *event =
509 caa_container_of(node, struct ltt_ust_event, node);
510
511 trace_ust_destroy_event(event);
512}
513
284d8f55
DG
514/*
515 * Cleanup UST events hashtable.
516 */
7bd39047 517static void destroy_events(struct lttng_ht *events)
ed52805d
DG
518{
519 int ret;
bec39940
DG
520 struct lttng_ht_node_str *node;
521 struct lttng_ht_iter iter;
ed52805d 522
0525e9ae
DG
523 assert(events);
524
36b588ed 525 rcu_read_lock();
bec39940
DG
526 cds_lfht_for_each_entry(events->ht, &iter.iter, node, node) {
527 ret = lttng_ht_del(events, &iter);
7bd39047
DG
528 assert(!ret);
529 call_rcu(&node->head, destroy_event_rcu);
ed52805d 530 }
36b588ed 531 rcu_read_unlock();
ed52805d 532
bec39940 533 lttng_ht_destroy(events);
ed52805d
DG
534}
535
97ee3a89
DG
536/*
537 * Cleanup ust channel structure.
36b588ed
MD
538 *
539 * Should _NOT_ be called with RCU read lock held.
97ee3a89 540 */
36b588ed 541static void _trace_ust_destroy_channel(struct ltt_ust_channel *channel)
97ee3a89 542{
0525e9ae
DG
543 assert(channel);
544
f6a9efaa 545 DBG2("Trace destroy UST channel %s", channel->name);
97ee3a89 546
7bd39047
DG
547 /* Destroying all events of the channel */
548 destroy_events(channel->events);
549 /* Destroying all context of the channel */
550 destroy_contexts(channel->ctx);
97ee3a89 551
97ee3a89 552 free(channel);
f6a9efaa
DG
553}
554
555/*
556 * URCU intermediate call to complete destroy channel.
557 */
558static void destroy_channel_rcu(struct rcu_head *head)
559{
bec39940
DG
560 struct lttng_ht_node_str *node =
561 caa_container_of(head, struct lttng_ht_node_str, head);
f6a9efaa
DG
562 struct ltt_ust_channel *channel =
563 caa_container_of(node, struct ltt_ust_channel, node);
564
36b588ed
MD
565 _trace_ust_destroy_channel(channel);
566}
567
568void trace_ust_destroy_channel(struct ltt_ust_channel *channel)
569{
570 call_rcu(&channel->node.head, destroy_channel_rcu);
97ee3a89
DG
571}
572
573/*
574 * Cleanup ust metadata structure.
575 */
576void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata)
577{
0525e9ae
DG
578 assert(metadata);
579
abc9138a
MD
580 if (!metadata->handle) {
581 return;
582 }
f6a9efaa 583 DBG2("Trace UST destroy metadata %d", metadata->handle);
97ee3a89
DG
584 free(metadata);
585}
586
587/*
f6a9efaa 588 * Iterate over a hash table containing channels and cleanup safely.
97ee3a89 589 */
bec39940 590static void destroy_channels(struct lttng_ht *channels)
f6a9efaa
DG
591{
592 int ret;
bec39940
DG
593 struct lttng_ht_node_str *node;
594 struct lttng_ht_iter iter;
f6a9efaa 595
0525e9ae
DG
596 assert(channels);
597
24d1723f
DG
598 rcu_read_lock();
599
bec39940
DG
600 cds_lfht_for_each_entry(channels->ht, &iter.iter, node, node) {
601 ret = lttng_ht_del(channels, &iter);
7bd39047
DG
602 assert(!ret);
603 call_rcu(&node->head, destroy_channel_rcu);
f6a9efaa 604 }
36b588ed 605 rcu_read_unlock();
ed52805d 606
bec39940 607 lttng_ht_destroy(channels);
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608}
609
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610/*
611 * Cleanup UST global domain.
612 */
613static void destroy_domain_global(struct ltt_ust_domain_global *dom)
614{
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615 assert(dom);
616
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617 destroy_channels(dom->channels);
618}
97ee3a89 619
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620/*
621 * Cleanup ust session structure
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622 *
623 * Should *NOT* be called with RCU read-side lock held.
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624 */
625void trace_ust_destroy_session(struct ltt_ust_session *session)
626{
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627 struct buffer_reg_uid *reg, *sreg;
628
0525e9ae 629 assert(session);
97ee3a89 630
fc4705fe 631 DBG2("Trace UST destroy session %u", session->id);
f6a9efaa 632
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633 /* Cleaning up UST domain */
634 destroy_domain_global(&session->domain_global);
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635
636 /* Cleanup UID buffer registry object(s). */
637 cds_list_for_each_entry_safe(reg, sreg, &session->buffer_reg_uid_list,
638 lnode) {
639 cds_list_del(&reg->lnode);
640 buffer_reg_uid_remove(reg);
641 buffer_reg_uid_destroy(reg, session->consumer);
642 }
44d3bd01 643
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644 consumer_destroy_output(session->consumer);
645 consumer_destroy_output(session->tmp_consumer);
646
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647 free(session);
648}
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