Working

bertos/os/hptime.c

@@ -0,0 +1,78 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief Portable abstraction for high-resolution time handling (implementation)
+ *
+ * \author Bernie Innocenti <bernie@codewiz.org>
+ */
+
+#include "hptime.h"
+
+#if defined(_WIN32)
+
+#include <windows.h>
+
+hptime_t hptime_get(void)
+{
+	FILETIME ft;
+
+	/*
+	 * La precisione dei FileTime sarebbe 100ns, ma il
+	 * valore viene ottenuto convertendo una struttura
+	 * SYSTEMTIME, che ha precisione di 1ms. Il numero
+	 * che otteniamo e' quindi sempre un multiplo di
+	 * 100000.
+	 */
+	GetSystemTimeAsFileTime(&ft);
+
+	/* Copy the upper/lower into a quadword. */
+	return (((hptime_t)ft.dwHighDateTime) << 32) + (hptime_t)ft.dwLowDateTime;
+}
+
+#elif defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
+
+#include <sys/time.h> /* for gettimeofday() */
+#include <stddef.h> /* for NULL */
+
+hptime_t hptime_get(void)
+{
+	struct timeval tv;
+
+	gettimeofday(&tv, NULL);
+	return (hptime_t)tv.tv_sec * HPTIME_TICKS_PER_SECOND
+		+ (hptime_t)tv.tv_usec;
+}
+
+#else /* !__unix__ */
+	#error OS dependent support code missing for this OS
+#endif /* !__unix__ */
+