ecos: crisper implementation of timeval_ms()

A crisper/faster implementation under eCos that makes profiling a
tad easier.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/src/helper/time_support_common.c b/src/helper/time_support_common.c
new file mode 100644
index 00000000..1ad3676c
--- /dev/null
+++ b/src/helper/time_support_common.c
@@ -0,0 +1,42 @@
+/***************************************************************************
+ *   Copyright (C) 2006 by Dominic Rath                                    *
+ *   Dominic.Rath@gmx.de                                                   *
+ *                                                                         *
+ *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
+ *   oyvind.harboe@zylin.com                                               *
+ *                                                                         *
+ *   Copyright (C) 2008 by Spencer Oliver                                  *
+ *   spen@spen-soft.co.uk                                                  *
+ *                                                                         *
+ *   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 program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "time_support.h"
+
+/* simple and low overhead fetching of ms counter. Use only
+ * the difference between ms counters returned from this fn.
+ */
+int64_t timeval_ms()
+{
+	struct timeval now;
+	int retval = gettimeofday(&now, NULL);
+	if (retval < 0)
+		return retval;
+	return (int64_t)now.tv_sec * 1000 + now.tv_usec / 1000;
+}