linux-kernel - [tip:perf/core] perf ui tui progress: Implement the ui_progress

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Date:	Thu, 27 Aug 2015 23:37:12 -0700
From:	tip-bot for Arnaldo Carvalho de Melo <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	namhyung@...nel.org, dsahern@...il.com, bp@...e.de,
	adrian.hunter@...el.com, linux-kernel@...r.kernel.org,
	mingo@...nel.org, fweisbec@...il.com, eranian@...gle.com,
	tglx@...utronix.de, hpa@...or.com, acme@...hat.com,
	jolsa@...hat.com
Subject: [tip:perf/core] perf ui tui progress:
  Implement the ui_progress_ops->finish() method

Commit-ID:  1e259ad4a25e37eb298bb5772b9a51e70bed7782
Gitweb:     http://git.kernel.org/tip/1e259ad4a25e37eb298bb5772b9a51e70bed7782
Author:     Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Mon, 24 Aug 2015 16:18:26 -0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 24 Aug 2015 16:18:26 -0300

perf ui tui progress: Implement the ui_progress_ops->finish() method

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

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

          ┌─Error:──────────────────────────────────────────────────────┐
          │Can't annotate unmapped_area_topdown:                        │
          │                                                             │
          │No vmlinux file with build id a826726b5ddacfab1f0bade868f1a79│
          │was found in the path.                                       │
          │                                                             │
          │Note that annotation using /proc/kcore requires CAP_SYS_RAWIO│
┌Processin│                                                             │──┐
│         │Please use:                                                  │  │
└─────────│                                                             │──┘
          │  perf buildid-cache -vu vmlinux                             │
          │                                                             │
          │or:                                                          │
          │                                                             │
          │  --vmlinux vmlinux                                          │
          │                                                             │
          │                                                             │
          │Press any key...                                             │
          └─────────────────────────────────────────────────────────────┘

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@...el.com>
Cc: Borislav Petkov <bp@...e.de>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/n/tip-qvktnojzwwe37pweging058t@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 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 c61d14b..c4b9900 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)
--
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