X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-relayd%2Fviewer-stream.h;h=e7d733b9e60ecb10479992b5e74042089e824cdb;hp=64e9e0abe1731019417949ccf4dc19c47e9e196a;hb=80516611b6f19201b1e173fb448935aca7a9e668;hpb=7bd95aee4660c6419a4a65429fc27754481e7e90

diff --git a/src/bin/lttng-relayd/viewer-stream.h b/src/bin/lttng-relayd/viewer-stream.h
index 64e9e0abe..e7d733b9e 100644
--- a/src/bin/lttng-relayd/viewer-stream.h
+++ b/src/bin/lttng-relayd/viewer-stream.h
@@ -45,6 +45,14 @@ struct relay_viewer_stream {
 	} stream_file;
 	/* index file from which to read the index data. */
 	struct lttng_index_file *index_file;
+	/*
+	 * Last seen rotation count in stream.
+	 *
+	 * Sampled on every change to the viewer stream trace chunk,
+	 * this allows the live server to determine if it saw the latest
+	 * rotation that occurred on the receiving end.
+	 */
+	uint64_t last_seen_rotation_count;
 
 	char *path_name;
 	char *channel_name;