Add timestamp to log -- #7877

This adds the time when a log message is displayed.
ARDOUR_UI::display_message() parses the prefix,
so the timestamp cannot be prefixed in the beforehand.

Still, UI::process_error_message() is called directly in
the same thread, so this makes no significant difference.

1 files changed, 8 insertions, 0 deletions

diff --git a/libs/gtkmm2ext/gtk_ui.cc b/libs/gtkmm2ext/gtk_ui.cc
index 34a6d1f53e..d1e834d892 100644
--- a/libs/gtkmm2ext/gtk_ui.cc
+++ b/libs/gtkmm2ext/gtk_ui.cc
@@ -36,6 +36,7 @@
 #include "pbd/error.h"
 #include "pbd/touchable.h"
 #include "pbd/failed_constructor.h"
+#include "pbd/localtime_r.h"
 #include "pbd/pthread_utils.h"
 #include "pbd/replace_all.h"
 
@@ -643,6 +644,13 @@ UI::display_message (const char *prefix, gint /*prefix_len*/, RefPtr<TextBuffer:
 {
 	RefPtr<TextBuffer> buffer (errors->text().get_buffer());
 
+	char timebuf[128];
+	time_t n = time (NULL);
+	struct tm local_time;
+	localtime_r (&n, &local_time);
+	strftime (timebuf, sizeof(timebuf), "%FT%H.%M.%S ", &local_time);
+
+	buffer->insert_with_tag(buffer->end(), timebuf, ptag);
 	buffer->insert_with_tag(buffer->end(), prefix, ptag);
 	buffer->insert_with_tag(buffer->end(), msg, mtag);
 	buffer->insert_with_tag(buffer->end(), "\n", mtag);