Add the sessiond notification-handling subsystem

[lttng-tools.git] / src / bin / lttng-sessiond / ust-registry.h

diff --git a/src/bin/lttng-sessiond/ust-registry.h b/src/bin/lttng-sessiond/ust-registry.h
index a8466ebf58c64c9260968e77a8e0573925f9b959..2697cf2ecc7e85bad6579a0ca8c1757a7f8d37aa 100644 (file)
--- a/src/bin/lttng-sessiond/ust-registry.h
+++ b/src/bin/lttng-sessiond/ust-registry.h
@@ -68,6 +68,8 @@ struct ust_registry_session {
        size_t metadata_len, metadata_alloc_len;
        /* Length of bytes sent to the consumer. */
        size_t metadata_len_sent;
+       /* Current version of the metadata. */
+       uint64_t metadata_version;
 
        char root_shm_path[PATH_MAX];
        char shm_path[PATH_MAX];
@@ -96,6 +98,13 @@ struct ust_registry_session {
 
        /* Enumerations table. */
        struct lttng_ht *enums;
+
+       /*
+        * Copy of the tracer version when the first app is registered.
+        * It is used if we need to regenerate the metadata.
+        */
+       uint32_t major;
+       uint32_t minor;
 };
 
 struct ust_registry_channel {
@@ -345,7 +354,7 @@ void ust_registry_destroy_event(struct ust_registry_channel *chan,
 /* The app object can be NULL for registry shared across applications. */
 static inline
 int ust_metadata_session_statedump(struct ust_registry_session *session,
-               struct ust_app *app)
+               struct ust_app *app, uint32_t major, uint32_t minor)
 {
        return 0;
 }