commit 0985a94891c73740dea1e2697f9d598a4a7810ab
author Namhyung Kim <namhyung@kernel.org> Thu Aug 16 17:14:54 2012 +0900
committer Arnaldo Carvalho de Melo <acme@redhat.com> Fri Aug 17 12:37:56 2012 -0300
tree 6cf8ceff2dad3e1f36415885c0aaf2e00f4a20cb
parent ed70c609ae92e0cb03b746ab566c3cf8f2aaede4

perf ui gtk: Add perf_gtk__show_helpline() for pr_*

Use helpline for printing error/debug messages. The code resembles a TUI
counter part and only print the first line of the message.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1345104894-14205-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/ui/gtk/helpline.c

diff --git a/tools/perf/ui/gtk/helpline.c b/tools/perf/ui/gtk/helpline.c
index 2511b37..5db4432 100644
--- a/tools/perf/ui/gtk/helpline.c
+++ b/tools/perf/ui/gtk/helpline.c
@@ -1,5 +1,10 @@
+#include <stdio.h>
+#include <string.h>
+
 #include "gtk.h"
+#include "../ui.h"
 #include "../helpline.h"
+#include "../../util/debug.h"
 
 static void gtk_helpline_pop(void)
 {
@@ -28,3 +33,24 @@
 {
 	helpline_fns = &gtk_helpline_fns;
 }
+
+int perf_gtk__show_helpline(const char *fmt, va_list ap)
+{
+	int ret;
+	char *ptr;
+	static int backlog;
+
+	ret = vscnprintf(ui_helpline__current + backlog,
+			 sizeof(ui_helpline__current) - backlog, fmt, ap);
+	backlog += ret;
+
+	/* only first line can be displayed */
+	ptr = strchr(ui_helpline__current, '\n');
+	if (ptr && (ptr - ui_helpline__current) <= backlog) {
+		*ptr = '\0';
+		ui_helpline__puts(ui_helpline__current);
+		backlog = 0;
+	}
+
+	return ret;
+}