Command to regenerate the metadata of a session

[lttng-modules.git] / lttng-events.h

diff --git a/lttng-events.h b/lttng-events.h
index 82b88e851769fe5ed813945921311d1ad72244b9..4bf8920f3fc18fe74b24704f7f45e1c4e244ec61 100644 (file)
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -421,6 +421,7 @@ struct lttng_metadata_stream {
        wait_queue_head_t read_wait;    /* Reader buffer-level wait queue */
        struct list_head list;          /* Stream list */
        struct lttng_transport *transport;
+       uint64_t version;               /* Current version of the metadata cache */
 };
 
 
@@ -466,7 +467,8 @@ struct lttng_metadata_cache {
        struct kref refcount;           /* Metadata cache usage */
        struct list_head metadata_stream;       /* Metadata stream list */
        uuid_le uuid;                   /* Trace session unique ID (copy) */
-       struct mutex lock;
+       struct mutex lock;              /* Produce/consume lock */
+       uint64_t version;               /* Current version of the metadata */
 };
 
 void lttng_lock_sessions(void);
@@ -487,6 +489,7 @@ struct lttng_session *lttng_session_create(void);
 int lttng_session_enable(struct lttng_session *session);
 int lttng_session_disable(struct lttng_session *session);
 void lttng_session_destroy(struct lttng_session *session);
+int lttng_session_metadata_regenerate(struct lttng_session *session);
 void metadata_cache_destroy(struct kref *kref);
 
 struct lttng_channel *lttng_channel_create(struct lttng_session *session,