Implement filter bytecode support in lttng-session, and parse filter string

[lttng-tools.git] / src / bin / lttng-sessiond / trace-ust.c

diff --git a/src/bin/lttng-sessiond/trace-ust.c b/src/bin/lttng-sessiond/trace-ust.c
index 9c7cfb690221f11778196bb83fa98209162c4091..4001ec87bdd8359f6224a1915e84c62f9c22486a 100644 (file)
--- a/src/bin/lttng-sessiond/trace-ust.c
+++ b/src/bin/lttng-sessiond/trace-ust.c
@@ -1,18 +1,18 @@
 /*
  * 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
@@ -85,8 +85,8 @@ error:
  *
  * 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;
@@ -109,6 +109,26 @@ struct ltt_ust_session *trace_ust_create_session(char *path, int session_id,
        /* Alloc UST global domain channels' HT */
        lus->domain_global.channels = lttng_ht_new(0, LTTNG_HT_TYPE_STRING);
 
+       lus->consumer = consumer_create_output(CONSUMER_DST_LOCAL);
+       if (lus->consumer == NULL) {
+               goto error;
+       }
+
+       /*
+        * 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. */
+       ret = snprintf(lus->consumer->dst.trace_path, PATH_MAX, "%s/ust", path);
+       if (ret < 0) {
+               PERROR("snprintf UST consumer trace path");
+               goto error;
+       }
+
        /* Set session path */
        ret = snprintf(lus->pathname, PATH_MAX, "%s/ust", path);
        if (ret < 0) {
@@ -121,6 +141,9 @@ struct ltt_ust_session *trace_ust_create_session(char *path, int session_id,
        return lus;
 
 error_free_session:
+       lttng_ht_destroy(lus->domain_global.channels);
+       lttng_ht_destroy(lus->domain_exec);
+       lttng_ht_destroy(lus->domain_pid);
        free(lus);
 error:
        return NULL;
@@ -149,7 +172,7 @@ struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan,
        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) {
@@ -180,6 +203,8 @@ struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan,
        return luc;
 
 error_free_channel:
+       lttng_ht_destroy(luc->ctx);
+       lttng_ht_destroy(luc->events);
        free(luc);
 error:
        return NULL;
@@ -245,6 +270,10 @@ struct ltt_ust_event *trace_ust_create_event(struct lttng_event *ev)
        lttng_ht_node_init_str(&lue->node, lue->attr.name);
        /* Alloc context hash tables */
        lue->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
+       if (lue->ctx == NULL) {
+               ERR("Unable to create context hash table for event %s", ev->name);
+               goto error_free_event;
+       }
 
        DBG2("Trace UST event %s, loglevel (%d,%d) created",
                lue->attr.name, lue->attr.loglevel_type,
@@ -381,7 +410,7 @@ 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);
 }
 
@@ -453,8 +482,10 @@ static void destroy_channel_rcu(struct rcu_head *head)
  */
 void trace_ust_destroy_metadata(struct ltt_ust_metadata *metadata)
 {
+       if (!metadata->handle) {
+               return;
+       }
        DBG2("Trace UST destroy metadata %d", metadata->handle);
-
        free(metadata);
 }
 
@@ -536,7 +567,7 @@ void trace_ust_destroy_session(struct ltt_ust_session *session)
 
        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);