perf ui: Add ui_progress__finish()

Sometimes we need to know when the progress bar should disappear.

Checking curr >= total wasn't enough since there're cases not met that
condition for the last call.

So add a new ->finish callback to identify this explicitly.  Currently
only GTK frontend needs it.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1352813436-14173-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

3 files changed, 17 insertions, 0 deletions

diff --git a/tools/perf/ui/gtk/progress.c b/tools/perf/ui/gtk/progress.c
index 903426fe27c..482bcf3df9b 100644
--- a/tools/perf/ui/gtk/progress.c
+++ b/tools/perf/ui/gtk/progress.c
@@ -40,8 +40,17 @@ static void gtk_progress_update(u64 curr, u64 total, const char *title)
                 gtk_main_iteration();
 }
 
+static void gtk_progress_finish(void)
+{
+        /* this will also destroy all of its children */
+        gtk_widget_destroy(dialog);
+
+        dialog = NULL;
+}
+
 static struct ui_progress gtk_progress_fns = {
         .update         = gtk_progress_update,
+        .finish         = gtk_progress_finish,
 };
 
 void perf_gtk__init_progress(void)
diff --git a/tools/perf/ui/progress.c b/tools/perf/ui/progress.c
index f5e4d1b95c7..3ec695607a4 100644
--- a/tools/perf/ui/progress.c
+++ b/tools/perf/ui/progress.c
@@ -18,3 +18,9 @@ void ui_progress__update(u64 curr, u64 total, const char *title)
 {
         return progress_fns->update(curr, total, title);
 }
+
+void ui_progress__finish(void)
+{
+        if (progress_fns->finish)
+                progress_fns->finish();
+}
diff --git a/tools/perf/ui/progress.h b/tools/perf/ui/progress.h
index 717814b3216..257cc224f9c 100644
--- a/tools/perf/ui/progress.h
+++ b/tools/perf/ui/progress.h
@@ -5,6 +5,7 @@
 
 struct ui_progress {
         void (*update)(u64, u64, const char *);
+        void (*finish)(void);
 };
 
 extern struct ui_progress *progress_fns;
@@ -12,5 +13,6 @@ extern struct ui_progress *progress_fns;
 void ui_progress__init(void);
 
 void ui_progress__update(u64 curr, u64 total, const char *title);
+void ui_progress__finish(void);
 
 #endif