Handle negative time and offset from Epoch

[babeltrace.git] / formats / ctf / events.c

diff --git a/formats/ctf/events.c b/formats/ctf/events.c
index eff707239af3dbc124ca7b81a6d4aa85eb031ea0..f336dd88b743b7bdbb9bd6e21a78d180dc0a584e 100644 (file)
--- a/formats/ctf/events.c
+++ b/formats/ctf/events.c
@@ -315,18 +315,19 @@ int bt_ctf_event_get_handle_id(const struct bt_ctf_event *ctf_event)
        return ret;
 }
 
-uint64_t bt_ctf_get_timestamp(const struct bt_ctf_event *ctf_event)
+int bt_ctf_get_timestamp(const struct bt_ctf_event *ctf_event, int64_t *timestamp)
 {
        const struct ctf_event_definition *event;
 
-       if (!ctf_event)
-               return -1ULL;
+       if (!ctf_event || !timestamp)
+               return -1;
 
        event = ctf_event->parent;
        if (event && event->stream->has_timestamp)
-               return event->stream->real_timestamp;
+               *timestamp = event->stream->real_timestamp;
        else
-               return -1ULL;
+               return -1;
+       return 0;
 }
 
 uint64_t bt_ctf_get_cycles(const struct bt_ctf_event *ctf_event)