linux-kernel - [PATCH 2/6] perf ui/gtk: Setup browser window early

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Date:	Fri, 21 Dec 2012 17:20:14 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Pekka Enberg <penberg@...nel.org>
Subject: [PATCH 2/6] perf ui/gtk: Setup browser window early

The ui__error/warning functions use gtk infobar or statusbar and
pr_* functions use statusbar too.  But after perf gtk context
created but those infobar and/or statusbar not yet set up,
calling one of those functions will get a segment fault.

Although current code has no problem, move these setting as early
as possible so that it can prevent the segfault from future change.

Cc: Pekka Enberg <penberg@...nel.org>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/ui/gtk/hists.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c
index 26912f86e032..c03da79d524f 100644
--- a/tools/perf/ui/gtk/hists.c
+++ b/tools/perf/ui/gtk/hists.c
@@ -180,6 +180,17 @@ int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist,
 
 	notebook = gtk_notebook_new();
 
+	gtk_box_pack_start(GTK_BOX(vbox), notebook, TRUE, TRUE, 0);
+
+	info_bar = perf_gtk__setup_info_bar();
+	if (info_bar)
+		gtk_box_pack_start(GTK_BOX(vbox), info_bar, FALSE, FALSE, 0);
+
+	statbar = perf_gtk__setup_statusbar();
+	gtk_box_pack_start(GTK_BOX(vbox), statbar, FALSE, FALSE, 0);
+
+	gtk_container_add(GTK_CONTAINER(window), vbox);
+
 	list_for_each_entry(pos, &evlist->entries, node) {
 		struct hists *hists = &pos->hists;
 		const char *evname = perf_evsel__name(pos);
@@ -199,17 +210,6 @@ int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist,
 		gtk_notebook_append_page(GTK_NOTEBOOK(notebook), scrolled_window, tab_label);
 	}
 
-	gtk_box_pack_start(GTK_BOX(vbox), notebook, TRUE, TRUE, 0);
-
-	info_bar = perf_gtk__setup_info_bar();
-	if (info_bar)
-		gtk_box_pack_start(GTK_BOX(vbox), info_bar, FALSE, FALSE, 0);
-
-	statbar = perf_gtk__setup_statusbar();
-	gtk_box_pack_start(GTK_BOX(vbox), statbar, FALSE, FALSE, 0);
-
-	gtk_container_add(GTK_CONTAINER(window), vbox);
-
 	gtk_widget_show_all(window);
 
 	perf_gtk__resize_window(window);
-- 
1.7.11.7

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