[PATCH 1/1] perf record: Don't call newt functions when not initialized

[Arnaldo Carvalho de Melo]

From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

When processing events we want to give visual feedback to the user when
using the newt browser, so there are ui_progress calls in
__perf_session__process_events, but those should check if newt is being
used.

Reported-by: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
Tested-by: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
Cc: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
Cc: FrÃdÃric Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>,
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Cc: Tom Zanussi <tzanussi@xxxxxxxxx>
LKML-Reference: <20100609123530.GB9471@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/newt.c |   15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/newt.c b/tools/perf/util/newt.c
index cf182ca..7537ca1 100644
--- a/tools/perf/util/newt.c
+++ b/tools/perf/util/newt.c
@@ -43,6 +43,9 @@ struct ui_progress *ui_progress__new(const char *title, u64 total)
 
 	if (self != NULL) {
 		int cols;
+
+		if (use_browser <= 0)	
+			return self;
 		newtGetScreenSize(&cols, NULL);
 		cols -= 4;
 		newtCenteredWindow(cols, 1, title);
@@ -67,14 +70,22 @@ out_free_self:
 
 void ui_progress__update(struct ui_progress *self, u64 curr)
 {
+	/*
+	 * FIXME: We should have a per UI backend way of showing progress,
+	 * stdio will just show a percentage as NN%, etc.
+	 */
+	if (use_browser <= 0)
+		return;
 	newtScaleSet(self->scale, curr);
 	newtRefresh();
 }
 
 void ui_progress__delete(struct ui_progress *self)
 {
-	newtFormDestroy(self->form);
-	newtPopWindow();
+	if (use_browser > 0) {
+		newtFormDestroy(self->form);
+		newtPopWindow();
+	}
 	free(self);
 }
 
-- 
1.6.2.5

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