[lttng-dev] [PATCH babeltrace-1.5] lttng-live: print discarded event and packet lost warnings on stderr

[Mathieu Desnoyers]

Reported-by: Liguang Li <liguang.lee6 at gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>
---
 formats/ctf/ctf.c                    |  1 -
 formats/lttng-live/lttng-live-comm.c | 10 ++++++++++
 include/babeltrace/ctf/types.h       |  1 +
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/formats/ctf/ctf.c b/formats/ctf/ctf.c
index d6d078f5..36424de5 100644
--- a/formats/ctf/ctf.c
+++ b/formats/ctf/ctf.c
@@ -434,7 +434,6 @@ void print_uuid(FILE *fp, unsigned char *uuid)
  * consumer had time to extract them. We keep track of those gaps with the
  * packet sequence number in each packet.
  */
-static
 void ctf_print_discarded_lost(FILE *fp, struct ctf_stream_definition *stream)
 {
 	if ((!stream->events_discarded && !stream->packets_lost) ||
diff --git a/formats/lttng-live/lttng-live-comm.c b/formats/lttng-live/lttng-live-comm.c
index a1c95bbc..77bf34ac 100644
--- a/formats/lttng-live/lttng-live-comm.c
+++ b/formats/lttng-live/lttng-live-comm.c
@@ -1297,6 +1297,16 @@ retry:
 		ctf_update_current_packet_index(&file_stream->parent,
 				prev_index, cur_index);
 
+		/*
+		 * We need to check if we are in trace read or called
+		 * from packet indexing.  In this last case, the
+		 * collection is not there, so we cannot print the
+		 * timestamps.
+		 */
+		if ((&file_stream->parent)->stream_class->trace->parent.collection) {
+			ctf_print_discarded_lost(stderr, &file_stream->parent);
+		}
+
 		file_stream->parent.cycles_timestamp =
 				cur_index->ts_cycles.timestamp_begin;
 		file_stream->parent.real_timestamp =
diff --git a/include/babeltrace/ctf/types.h b/include/babeltrace/ctf/types.h
index cc8acbf5..574f97b3 100644
--- a/include/babeltrace/ctf/types.h
+++ b/include/babeltrace/ctf/types.h
@@ -249,5 +249,6 @@ void ctf_print_timestamp(FILE *fp, struct ctf_stream_definition *stream,
 			uint64_t timestamp);
 int ctf_append_trace_metadata(struct bt_trace_descriptor *tdp,
 			FILE *metadata_fp);
+void ctf_print_discarded_lost(FILE *fp, struct ctf_stream_definition *stream);
 
 #endif /* _BABELTRACE_CTF_TYPES_H */
-- 
2.11.0