[PATCH 03/22] perf ui tui progress: Implement the ui_progress_ops->finish() method

[Arnaldo Carvalho de Melo]

From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

So that we can erase the progress bar after we're done with it, avoiding
things like:

-------------------------------------------------------------------

          ââError:âââââââââââââââââââââââââââââââââââââââââââââââââââââââ
          âCan't annotate unmapped_area_topdown:                        â
          â                                                             â
          âNo vmlinux file with build id a826726b5ddacfab1f0bade868f1a79â
          âwas found in the path.                                       â
          â                                                             â
          âNote that annotation using /proc/kcore requires CAP_SYS_RAWIOâ
âProcessinâ                                                             ââââ
â         âPlease use:                                                  â  â
âââââââââââ                                                             ââââ
          â  perf buildid-cache -vu vmlinux                             â
          â                                                             â
          âor:                                                          â
          â                                                             â
          â  --vmlinux vmlinux                                          â
          â                                                             â
          â                                                             â
          âPress any key...                                             â
          âââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ

Can't annotate unmapped_area_topdown:
-------------------------------------------------------------------

I.e. that finished progress bar behind the error window. It is not a
problem when we end up redrawing the whole screen, but its ugly when
we present such error windows, provide a TUI method so that code like
the above may avoid this situation, as will be done with the annotation
code in the next cset.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-qvktnojzwwe37pweging058t@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/ui/tui/progress.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/tools/perf/ui/tui/progress.c b/tools/perf/ui/tui/progress.c
index c61d14b101e0..c4b99008e2c9 100644
--- a/tools/perf/ui/tui/progress.c
+++ b/tools/perf/ui/tui/progress.c
@@ -33,9 +33,26 @@ static void tui_progress__update(struct ui_progress *p)
 	pthread_mutex_unlock(&ui__lock);
 }
 
+static void tui_progress__finish(void)
+{
+	int y;
+
+	if (use_browser <= 0)
+		return;
+
+	ui__refresh_dimensions(false);
+	pthread_mutex_lock(&ui__lock);
+	y = SLtt_Screen_Rows / 2 - 2;
+	SLsmg_set_color(0);
+	SLsmg_fill_region(y, 0, 3, SLtt_Screen_Cols, ' ');
+	SLsmg_refresh();
+	pthread_mutex_unlock(&ui__lock);
+}
+
 static struct ui_progress_ops tui_progress__ops =
 {
-	.update		= tui_progress__update,
+	.update = tui_progress__update,
+	.finish = tui_progress__finish,
 };
 
 void tui_progress__init(void)
-- 
2.1.0

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