trigger: generate and add tracer token on registration

[lttng-tools.git] / src / bin / lttng-sessiond / notification-thread.h

diff --git a/src/bin/lttng-sessiond/notification-thread.h b/src/bin/lttng-sessiond/notification-thread.h
index 21cc086c6ee8ec9c2db4b7b9c0daceee28ab1b99..c80bb691db52263c9075a31e21f968037811f51b 100644 (file)
--- a/src/bin/lttng-sessiond/notification-thread.h
+++ b/src/bin/lttng-sessiond/notification-thread.h
@@ -8,16 +8,17 @@
 #ifndef NOTIFICATION_THREAD_H
 #define NOTIFICATION_THREAD_H
 
-#include <urcu/list.h>
-#include <urcu.h>
-#include <urcu/rculfhash.h>
-#include <lttng/trigger/trigger.h>
-#include <common/pipe.h>
+#include "action-executor.h"
+#include "thread.h"
 #include <common/compat/poll.h>
 #include <common/hashtable/hashtable.h>
+#include <common/pipe.h>
+#include <lttng/trigger/trigger.h>
 #include <pthread.h>
 #include <semaphore.h>
-#include "thread.h"
+#include <urcu.h>
+#include <urcu/list.h>
+#include <urcu/rculfhash.h>
 
 
 typedef uint64_t notification_client_id;
@@ -107,9 +108,14 @@ struct notification_thread_handle {
  *             channels through their struct channel_info (ref-counting is used).
  *
  *   - triggers_ht:
- *             associates a condition to a struct lttng_trigger_ht_element.
+ *             associates a trigger to a struct lttng_trigger_ht_element.
  *             The hash table holds the ownership of the
  *             lttng_trigger_ht_elements along with the triggers themselves.
+ *   - triggers_by_name_uid_ht:
+ *             associates a trigger (name, uid) tuple to
+ *             a struct lttng_trigger_ht_element.
+ *             The hash table does not hold any ownership and is used strictly
+ *             for lookup on registration.
  *
  * The thread reacts to the following internal events:
  *   1) creation of a tracing channel,
@@ -153,6 +159,7 @@ struct notification_thread_handle {
  *          notification_trigger_clients_ht,
  *    - add trigger to channel_triggers_ht (if applicable),
  *    - add trigger to session_triggers_ht (if applicable),
+ *    - add trigger to triggers_by_name_uid_ht
  *    - add trigger to triggers_ht
  *    - evaluate the trigger's condition right away to react if that condition
  *      is true from the beginning.
@@ -162,6 +169,7 @@ struct notification_thread_handle {
  *      - remove the trigger from the notification_trigger_clients_ht,
  *    - remove trigger from channel_triggers_ht (if applicable),
  *    - remove trigger from session_triggers_ht (if applicable),
+ *    - remove trigger from triggers_by_name_uid_ht
  *    - remove trigger from triggers_ht
  *
  * 5) Reception of a channel monitor sample from the consumer daemon
@@ -209,7 +217,13 @@ struct notification_thread_state {
        struct cds_lfht *channels_ht;
        struct cds_lfht *sessions_ht;
        struct cds_lfht *triggers_ht;
+       struct cds_lfht *triggers_by_name_uid_ht;
+       struct {
+               uint64_t next_tracer_token;
+               uint64_t name_offset;
+       } trigger_id;
        notification_client_id next_notification_client_id;
+       struct action_executor *executor;
 };
 
 /* notification_thread_data takes ownership of the channel monitor pipes. */