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Subject[PATCH 03/16] perf ui tui progress: Implement the ui_progress_ops->finish() method
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From: Arnaldo Carvalho de Melo <acme@redhat.com>

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@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-qvktnojzwwe37pweging058t@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.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 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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