Boot charting support.

Select (B)ootchart in advanced options in configure, and logf will record timings for various stages of boot, for performance comparisons. Format logged is:
BC:>function_name,123,80
where 123 is the line number, 80 is the number of ticks since boot. This can be loaded as CSV into a spreadsheet.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25426 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 42 insertions, 0 deletions

diff --git a/firmware/export/bootchart.h b/firmware/export/bootchart.h
new file mode 100644
index 0000000000..cad41ee50c
--- /dev/null
+++ b/firmware/export/bootchart.h
@@ -0,0 +1,42 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 by Torne Wuff
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef BOOTCHART_H
+#define BOOTCHART_H
+#include <config.h>
+#include <stdbool.h>
+#include "../include/_ansi.h"
+#include "logf.h"
+#include "kernel.h"
+
+#ifdef DO_BOOTCHART
+
+/* we call _logf directly to avoid needing LOGF_ENABLE per-file */
+#define CHART2(x,y) _logf("BC:%s%s,%d,%ld", (x), (y), __LINE__, current_tick)
+#define CHART(x) CHART2(x,"")
+
+#else /* !DO_BOOTCHART */
+
+#define CHART2(x,y)
+#define CHART(x)
+
+#endif /* DO_BOOTCHART */
+
+#endif /* BOOTCHART_H */