X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-relayd%2Fstream.h;h=5e23e7339cf4fcf7495f2ae4825fcdfdd57641d1;hp=ae75dacc3a061e1d77e16445f1f3d0371baf0db9;hb=c6db3843828a8fbf08444a2bc4191291a4807936;hpb=a8f9f353edcfac878ed6977381e3030608bf4e92

diff --git a/src/bin/lttng-relayd/stream.h b/src/bin/lttng-relayd/stream.h
index ae75dacc3..5e23e7339 100644
--- a/src/bin/lttng-relayd/stream.h
+++ b/src/bin/lttng-relayd/stream.h
@@ -65,6 +65,20 @@ struct relay_stream {
 	struct lttng_index_file *index_file;
 
 	char *path_name;
+	/*
+	 * prev_path_name is only used for session rotation support.
+	 * It is essentially used to work around the fact that index
+	 * files are always created from the 'data' connection.
+	 *
+	 * Hence, it is possible to receive a ROTATE_STREAM command
+	 * which affects the stream's path_name before the creation of
+	 * an index file. In this situation, the index file of the
+	 * 'previous' chunk would be created in the new destination folder.
+	 *
+	 * It would then be unlinked when the actual index of the new chunk
+	 * is created.
+	 */
+	char *prev_path_name;
 	char *channel_name;
 
 	/* On-disk circular buffer of tracefiles. */
@@ -152,6 +166,14 @@ struct relay_stream {
 	 * Always access with stream lock held.
 	 */
 	uint64_t rotate_at_seq_num;
+	/*
+	 * When rotate_at_seq_num != -1ULL, meaning that a rotation is ongoing,
+	 * data_rotated and index_rotated respectively indicate if the stream's
+	 * data and index have been rotated. A rotation is considered completed
+	 * when both rotations have occurred.
+	 */
+	bool data_rotated;
+	bool index_rotated;
 	/*
 	 * This is the id of the chunk where we are writing to if no rotation is
 	 * pending (rotate_at_seq_num == -1ULL). If a rotation is pending, this