* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _GNU_SOURCE
#define _LGPL_SOURCE
#include <assert.h>
#include <urcu/uatomic.h>
{
struct agent_event *event;
const struct agent_ht_key *key;
+ int ll_match;
assert(node);
assert(_key);
goto no_match;
}
- if (event->loglevel != key->loglevel) {
- if (event->loglevel_type == LTTNG_EVENT_LOGLEVEL_ALL &&
- key->loglevel == 0 && event->loglevel == -1) {
- goto match;
- }
+ /* Event loglevel value and type. */
+ ll_match = loglevels_match(event->loglevel_type,
+ event->loglevel_value, key->loglevel_type,
+ key->loglevel_value, LTTNG_EVENT_LOGLEVEL_ALL);
+
+ if (!ll_match) {
goto no_match;
}
-match:
+
return 1;
no_match:
assert(event);
key.name = event->name;
- key.loglevel = event->loglevel;
+ key.loglevel_value = event->loglevel_value;
+ key.loglevel_type = event->loglevel_type;
node_ptr = cds_lfht_add_unique(ht->ht,
ht->hash_fct(event->node.key, lttng_ht_seed),
struct agent_event *event =
caa_container_of(node, struct agent_event, node);
- free(event);
+ agent_destroy_event(event);
}
/*
}
memset(&msg, 0, sizeof(msg));
- msg.loglevel = event->loglevel;
+ msg.loglevel_value = event->loglevel_value;
msg.loglevel_type = event->loglevel_type;
strncpy(msg.name, event->name, sizeof(msg.name));
ret = send_payload(app->sock, &msg, sizeof(msg));
}
/*
- * Create a newly allocated agent event data structure. If name is valid, it's
- * copied into the created event.
+ * Create a newly allocated agent event data structure.
+ * Ownership of filter_expression is taken.
*
* Return a new object else NULL on error.
*/
struct agent_event *agent_create_event(const char *name,
- struct lttng_filter_bytecode *filter)
+ enum lttng_loglevel_type loglevel_type, int loglevel_value,
+ struct lttng_filter_bytecode *filter, char *filter_expression)
{
- struct agent_event *event;
+ struct agent_event *event = NULL;
- DBG3("Agent create new event with name %s", name);
+ DBG3("Agent create new event with name %s, loglevel type %d and loglevel value %d",
+ name, loglevel_type, loglevel_value);
- event = zmalloc(sizeof(*event));
- if (!event) {
+ if (!name) {
+ ERR("Failed to create agent event; no name provided.");
goto error;
}
- if (name) {
- strncpy(event->name, name, sizeof(event->name));
- event->name[sizeof(event->name) - 1] = '\0';
- lttng_ht_node_init_str(&event->node, event->name);
+ event = zmalloc(sizeof(*event));
+ if (!event) {
+ goto error;
}
- if (filter) {
- event->filter = filter;
- }
+ strncpy(event->name, name, sizeof(event->name));
+ event->name[sizeof(event->name) - 1] = '\0';
+ lttng_ht_node_init_str(&event->node, event->name);
+ event->loglevel_value = loglevel_value;
+ event->loglevel_type = loglevel_type;
+ event->filter = filter;
+ event->filter_expression = filter_expression;
error:
return event;
}
assert(agt->events);
DBG3("Agent adding event %s", event->name);
-
- rcu_read_lock();
add_unique_agent_event(agt->events, event);
- rcu_read_unlock();
agt->being_used = 1;
}
/*
- * Find a agent event in the given agent using name.
+ * Find multiple agent events sharing the given name.
*
- * RCU read side lock MUST be acquired.
+ * RCU read side lock MUST be acquired. It must be held for the
+ * duration of the iteration.
*
- * Return object if found else NULL.
+ * Sets the given iterator.
*/
-struct agent_event *agent_find_event_by_name(const char *name,
- struct agent *agt)
+void agent_find_events_by_name(const char *name, struct agent *agt,
+ struct lttng_ht_iter* iter)
{
- struct lttng_ht_node_str *node;
- struct lttng_ht_iter iter;
struct lttng_ht *ht;
struct agent_ht_key key;
assert(name);
assert(agt);
assert(agt->events);
+ assert(iter);
ht = agt->events;
key.name = name;
cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed),
- ht_match_event_by_name, &key, &iter.iter);
- node = lttng_ht_iter_get_node_str(&iter);
- if (node == NULL) {
- goto error;
- }
+ ht_match_event_by_name, &key, &iter->iter);
+}
- DBG3("Agent event found %s by name.", name);
- return caa_container_of(node, struct agent_event, node);
+/*
+ * Get the next agent event duplicate by name. This should be called
+ * after a call to agent_find_events_by_name() to iterate on events.
+ *
+ * The RCU read lock must be held during the iteration and for as long
+ * as the object the iterator points to remains in use.
+ */
+void agent_event_next_duplicate(const char *name,
+ struct agent *agt, struct lttng_ht_iter* iter)
+{
+ struct agent_ht_key key;
-error:
- DBG3("Agent NOT found by name %s.", name);
- return NULL;
+ key.name = name;
+
+ cds_lfht_next_duplicate(agt->events->ht, ht_match_event_by_name,
+ &key, &iter->iter);
}
/*
* Find a agent event in the given agent using name and loglevel.
*
- * RCU read side lock MUST be acquired.
+ * RCU read side lock MUST be acquired. It must be kept for as long as
+ * the returned agent_event is used.
*
* Return object if found else NULL.
*/
-struct agent_event *agent_find_event(const char *name, int loglevel,
+struct agent_event *agent_find_event(const char *name,
+ enum lttng_loglevel_type loglevel_type, int loglevel_value,
struct agent *agt)
{
struct lttng_ht_node_str *node;
ht = agt->events;
key.name = name;
- key.loglevel = loglevel;
+ key.loglevel_value = loglevel_value;
+ key.loglevel_type = loglevel_type;
cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed),
ht_match_event, &key, &iter.iter);
free(event->filter);
free(event->filter_expression);
+ free(event->exclusion);
free(event);
}
/*
- * Destroy an agent completely. Note that the given pointer is NOT freed
- * thus a reference to static or stack data can be passed to this function.
+ * Destroy an agent completely.
*/
void agent_destroy(struct agent *agt)
{
DBG3("Agent destroy");
- /*
- * Just ignore if no events hash table exists. This is possible if for
- * instance an agent object was allocated but not initialized.
- */
- if (!agt->events) {
- return;
- }
-
rcu_read_lock();
cds_lfht_for_each_entry(agt->events->ht, &iter.iter, node, node) {
int ret;
rcu_read_unlock();
ht_cleanup_push(agt->events);
+ free(agt);
}
/*
projects / lttng-tools.git / blobdiff