trace2: add absolute elapsed time to start event

diff --git a/trace2/tr2_tgt_event.c b/trace2/tr2_tgt_event.c
index 107cb5317d2270ccf8b54727fb55f4526a503c24..89a4d3ae9a56e909d254f1f8df4b577a34c65deb 100644 (file)
--- a/trace2/tr2_tgt_event.c
+++ b/trace2/tr2_tgt_event.c
@@ -122,13 +122,16 @@ static void fn_version_fl(const char *file, int line)
        jw_release(&jw);
 }
 
-static void fn_start_fl(const char *file, int line, const char **argv)
+static void fn_start_fl(const char *file, int line,
+                       uint64_t us_elapsed_absolute, const char **argv)
 {
        const char *event_name = "start";
        struct json_writer jw = JSON_WRITER_INIT;
+       double t_abs = (double)us_elapsed_absolute / 1000000.0;
 
        jw_object_begin(&jw, 0);
        event_fmt_prepare(event_name, file, line, NULL, &jw);
+       jw_object_double(&jw, "t_abs", 6, t_abs);
        jw_object_inline_begin_array(&jw, "argv");
        jw_array_argv(&jw, argv);
        jw_end(&jw);