Fix: sessiond: rotation thread: fatal error when not finding a session

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

diff --git a/src/bin/lttng-sessiond/notification-thread-commands.h b/src/bin/lttng-sessiond/notification-thread-commands.h
index 0f76ee5a60f520bccb4c6b699b1be89a396e35fc..643b0e6020913432b47e763790cbf3421080e2cc 100644 (file)
--- a/src/bin/lttng-sessiond/notification-thread-commands.h
+++ b/src/bin/lttng-sessiond/notification-thread-commands.h
@@ -32,6 +32,7 @@ enum notification_thread_command_type {
        NOTIFICATION_COMMAND_TYPE_LIST_TRIGGERS,
        NOTIFICATION_COMMAND_TYPE_QUIT,
        NOTIFICATION_COMMAND_TYPE_CLIENT_COMMUNICATION_UPDATE,
+       NOTIFICATION_COMMAND_TYPE_GET_TRIGGER,
 };
 
 struct notification_thread_command {
@@ -39,8 +40,15 @@ struct notification_thread_command {
 
        enum notification_thread_command_type type;
        union {
-               /* Register/Unregister trigger. */
-               struct lttng_trigger *trigger;
+               /* Register trigger. */
+               struct {
+                       struct lttng_trigger *trigger;
+                       bool is_trigger_anonymous;
+               } register_trigger;
+               /* Unregister trigger. */
+               struct {
+                       const struct lttng_trigger *trigger;
+               } unregister_trigger;
                /* Add channel. */
                struct {
                        struct {
@@ -65,6 +73,7 @@ struct notification_thread_command {
                        uid_t uid;
                        gid_t gid;
                        uint64_t trace_archive_chunk_id;
+                       /* Weak reference. */
                        struct lttng_trace_archive_location *location;
                } session_rotation;
                /* Add/Remove tracer event source fd. */
@@ -83,12 +92,19 @@ struct notification_thread_command {
                        enum client_transmission_status status;
                } client_communication_update;
 
+               struct {
+                       const struct lttng_trigger *trigger;
+               } get_trigger;
+
        } parameters;
 
        union {
                struct {
                        struct lttng_triggers *triggers;
                } list_triggers;
+               struct {
+                       struct lttng_trigger *trigger;
+               } get_trigger;
        } reply;
        /* lttng_waiter on which to wait for command reply (optional). */
        struct lttng_waiter reply_waiter;
@@ -98,11 +114,12 @@ struct notification_thread_command {
 
 enum lttng_error_code notification_thread_command_register_trigger(
                struct notification_thread_handle *handle,
-               struct lttng_trigger *trigger);
+               struct lttng_trigger *trigger,
+               bool is_anonymous_trigger);
 
 enum lttng_error_code notification_thread_command_unregister_trigger(
                struct notification_thread_handle *handle,
-               struct lttng_trigger *trigger);
+               const struct lttng_trigger *trigger);
 
 enum lttng_error_code notification_thread_command_add_channel(
                struct notification_thread_handle *handle,
@@ -160,4 +177,9 @@ enum lttng_error_code notification_thread_command_remove_tracer_event_source(
 void notification_thread_command_quit(
                struct notification_thread_handle *handle);
 
+enum lttng_error_code notification_thread_command_get_trigger(
+               struct notification_thread_handle *handle,
+               const struct lttng_trigger *trigger,
+               struct lttng_trigger **real_trigger);
+
 #endif /* NOTIFICATION_THREAD_COMMANDS_H */