[DeviceDrivers] Add CPU time

components/drivers/include/drivers/cputime.h

@@ -0,0 +1,39 @@
+/*
+ * File      : cputime.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2017, RT-Thread Development Team
+ *
+ *  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.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author            Notes
+ * 2017-12-23     Bernard           first version
+ */
+
+#ifndef CPUTIME_H__
+#define CPUTIME_H__
+
+struct rt_clock_cputime_ops
+{
+    uint32_t (*cputime_getres) (void);
+    uint32_t (*cputime_gettime)(void);
+};
+
+uint32_t clock_cpu_getres(void);
+uint32_t clock_cpu_gettime(void);
+
+int clock_cpu_setops(const struct rt_clock_cputime_ops *ops);
+
+#endif

components/drivers/include/rtdevice.h

@@ -108,6 +108,10 @@ extern "C" {
 #include "drivers/audio.h"
 #endif
 
+#ifdef RT_USING_CPUTIME
+#include "drivers/cputime.h"
+#endif
+
 #ifdef __cplusplus
 }
 #endif