/*
* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; only version 2 of the License.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2 only,
+ * as published by the Free Software Foundation.
*
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#define _GNU_SOURCE
#include "trace-ust.h"
+/*
+ * Match function for the events hash table lookup.
+ *
+ * Matches by name only. Used by the disable command.
+ */
+int trace_ust_ht_match_event_by_name(struct cds_lfht_node *node,
+ const void *_key)
+{
+ struct ltt_ust_event *event;
+ const char *name;
+
+ assert(node);
+ assert(_key);
+
+ event = caa_container_of(node, struct ltt_ust_event, node.node);
+ name = _key;
+
+ /* Event name */
+ if (strncmp(event->attr.name, name, sizeof(event->attr.name)) != 0) {
+ goto no_match;
+ }
+
+ /* Match */
+ return 1;
+
+no_match:
+ return 0;
+}
+
+/*
+ * Match function for the hash table lookup.
+ *
+ * It matches an ust event based on three attributes which are the event name,
+ * the filter bytecode and the loglevel.
+ */
+int trace_ust_ht_match_event(struct cds_lfht_node *node, const void *_key)
+{
+ struct ltt_ust_event *event;
+ const struct ltt_ust_ht_key *key;
+
+ assert(node);
+ assert(_key);
+
+ event = caa_container_of(node, struct ltt_ust_event, node.node);
+ key = _key;
+
+ /* Match the 3 elements of the key: name, filter and loglevel. */
+
+ /* Event name */
+ if (strncmp(event->attr.name, key->name, sizeof(event->attr.name)) != 0) {
+ goto no_match;
+ }
+
+ /* Event loglevel. */
+ if (event->attr.loglevel != key->loglevel) {
+ if (event->attr.loglevel_type == LTTNG_UST_LOGLEVEL_ALL
+ && key->loglevel == 0 && event->attr.loglevel == -1) {
+ /*
+ * Match is accepted. This is because on event creation, the
+ * loglevel is set to -1 if the event loglevel type is ALL so 0 and
+ * -1 are accepted for this loglevel type since 0 is the one set by
+ * the API when receiving an enable event.
+ */
+ } else {
+ goto no_match;
+ }
+ }
+
+ /* Only one of the filters is NULL, fail. */
+ if ((key->filter && !event->filter) || (!key->filter && event->filter)) {
+ goto no_match;
+ }
+
+ if (key->filter && event->filter) {
+ /* Both filters exists, check length followed by the bytecode. */
+ if (event->filter->len != key->filter->len ||
+ memcmp(event->filter->data, key->filter->data,
+ event->filter->len) != 0) {
+ goto no_match;
+ }
+ }
+
+ /* Match. */
+ return 1;
+
+no_match:
+ return 0;
+}
+
/*
* Find the channel in the hashtable.
*/
/*
* Find the event in the hashtable.
*/
-struct ltt_ust_event *trace_ust_find_event_by_name(struct lttng_ht *ht,
- char *name)
+struct ltt_ust_event *trace_ust_find_event(struct lttng_ht *ht,
+ char *name, struct lttng_filter_bytecode *filter, int loglevel)
{
struct lttng_ht_node_str *node;
struct lttng_ht_iter iter;
+ struct ltt_ust_ht_key key;
- rcu_read_lock();
- lttng_ht_lookup(ht, (void *) name, &iter);
+ assert(name);
+ assert(ht);
+
+ key.name = name;
+ key.filter = filter;
+ key.loglevel = loglevel;
+
+ cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed),
+ trace_ust_ht_match_event, &key, &iter.iter);
node = lttng_ht_iter_get_node_str(&iter);
if (node == NULL) {
- rcu_read_unlock();
goto error;
}
- rcu_read_unlock();
- DBG2("Trace UST event found by name %s", name);
+ DBG2("Trace UST event %s found", key.name);
return caa_container_of(node, struct ltt_ust_event, node);
error:
- DBG2("Trace UST event NOT found by name %s", name);
+ DBG2("Trace UST event %s NOT found", key.name);
return NULL;
}
*
* Return pointer to structure or NULL.
*/
-struct ltt_ust_session *trace_ust_create_session(char *path, int session_id,
- struct lttng_domain *domain)
+struct ltt_ust_session *trace_ust_create_session(char *path,
+ unsigned int session_id, struct lttng_domain *domain)
{
int ret;
struct ltt_ust_session *lus;
/* Alloc UST global domain channels' HT */
lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING);
- /* Set session path */
- ret = snprintf(lus->pathname, PATH_MAX, "%s/ust", path);
- if (ret < 0) {
- PERROR("snprintf kernel traces path");
- goto error_free_session;
+ lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL);
+ if (lus->consumer == NULL) {
+ goto error_consumer;
+ }
+
+ /*
+ * The tmp_consumer stays NULL until a set_consumer_uri command is
+ * executed. At this point, the consumer should be nullify until an
+ * enable_consumer command. This assignment is symbolic since we've zmalloc
+ * the struct.
+ */
+ lus->tmp_consumer = NULL;
+
+ /* Use the default consumer output which is the tracing session path. */
+ if (path && strlen(path) > 0) {
+ ret = snprintf(lus->consumer->dst.trace_path, PATH_MAX,
+ "%s" DEFAULT_UST_TRACE_DIR, path);
+ if (ret < 0) {
+ PERROR("snprintf UST consumer trace path");
+ goto error_path;
+ }
+
+ /* Set session path */
+ ret = snprintf(lus->pathname, PATH_MAX, "%s" DEFAULT_UST_TRACE_DIR,
+ path);
+ if (ret < 0) {
+ PERROR("snprintf kernel traces path");
+ goto error_path;
+ }
}
DBG2("UST trace session create successful");
return lus;
-error_free_session:
+error_path:
+ consumer_destroy_output(lus->consumer);
+error_consumer:
+ lttng_ht_destroy(lus->domain_global.channels);
+ lttng_ht_destroy(lus->domain_exec);
+ lttng_ht_destroy(lus->domain_pid);
free(lus);
error:
return NULL;
luc = zmalloc(sizeof(struct ltt_ust_channel));
if (luc == NULL) {
- perror("ltt_ust_channel zmalloc");
+ PERROR("ltt_ust_channel zmalloc");
goto error;
}
luc->attr.num_subbuf = chan->attr.num_subbuf;
luc->attr.switch_timer_interval = chan->attr.switch_timer_interval;
luc->attr.read_timer_interval = chan->attr.read_timer_interval;
- luc->attr.output = chan->attr.output;
+ luc->attr.output = (enum lttng_ust_output) chan->attr.output;
/* Translate to UST output enum */
switch (luc->attr.output) {
/* Set trace output path */
ret = snprintf(luc->pathname, PATH_MAX, "%s", path);
if (ret < 0) {
- perror("asprintf ust create channel");
+ PERROR("asprintf ust create channel");
goto error_free_channel;
}
return luc;
error_free_channel:
+ lttng_ht_destroy(luc->ctx);
+ lttng_ht_destroy(luc->events);
free(luc);
error:
return NULL;
*
* Return pointer to structure or NULL.
*/
-struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev)
+struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev,
+ struct lttng_filter_bytecode *filter)
{
struct ltt_ust_event *lue;
goto error_free_event;
}
+ /* Same layout. */
+ lue->filter = (struct lttng_ust_filter_bytecode *) filter;
/* Init node */
lttng_ht_node_init_str(&lue->node, lue->attr.name);
- /* Alloc context hash tables */
- lue->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
DBG2("Trace UST event %s, loglevel (%d,%d) created",
lue->attr.name, lue->attr.loglevel_type,
lum = zmalloc(sizeof(struct ltt_ust_metadata));
if (lum == NULL) {
- perror("ust metadata zmalloc");
+ PERROR("ust metadata zmalloc");
goto error;
}
/* Set default attributes */
lum->attr.overwrite = DEFAULT_CHANNEL_OVERWRITE;
- lum->attr.subbuf_size = DEFAULT_METADATA_SUBBUF_SIZE;
+ lum->attr.subbuf_size = default_get_metadata_subbuf_size();
lum->attr.num_subbuf = DEFAULT_METADATA_SUBBUF_NUM;
lum->attr.switch_timer_interval = DEFAULT_CHANNEL_SWITCH_TIMER;
lum->attr.read_timer_interval = DEFAULT_CHANNEL_READ_TIMER;
/* Set metadata trace path */
ret = snprintf(lum->pathname, PATH_MAX, "%s/metadata", path);
if (ret < 0) {
- perror("asprintf ust metadata");
+ PERROR("asprintf ust metadata");
goto error_free_metadata;
}
void trace_ust_destroy_event(struct ltt_ust_event *event)
{
DBG2("Trace destroy UST event %s", event->attr.name);
- destroy_contexts(event->ctx);
-
+ free(event->filter);
free(event);
}
*/
void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata)
{
+ if (!metadata->handle) {
+ return;
+ }
DBG2("Trace UST destroy metadata %d", metadata->handle);
-
free(metadata);
}
rcu_read_lock();
- DBG2("Trace UST destroy session %d", session->id);
+ DBG2("Trace UST destroy session %u", session->id);
/* Cleaning up UST domain */
destroy_domain_global(&session->domain_global);
destroy_domain_pid(session->domain_pid);
destroy_domain_exec(session->domain_exec);
+ consumer_destroy_output(session->consumer);
+ consumer_destroy_output(session->tmp_consumer);
+
free(session);
rcu_read_unlock();
projects / lttng-tools.git / blobdiff