Beginnings of the DG-ID Gateway

DGIdGateway/StopWatch.cpp

@@ -0,0 +1,105 @@
+/*
+ *   Copyright (C) 2015,2016,2018 by Jonathan Naylor G4KLX
+ *
+ *   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "StopWatch.h"
+
+#if defined(_WIN32) || defined(_WIN64)
+
+CStopWatch::CStopWatch() :
+m_frequencyS(),
+m_frequencyMS(),
+m_start()
+{
+	::QueryPerformanceFrequency(&m_frequencyS);
+
+	m_frequencyMS.QuadPart = m_frequencyS.QuadPart / 1000ULL;
+}
+
+CStopWatch::~CStopWatch()
+{
+}
+
+unsigned long long CStopWatch::time() const
+{
+	LARGE_INTEGER now;
+	::QueryPerformanceCounter(&now);
+
+	return (unsigned long long)(now.QuadPart / m_frequencyMS.QuadPart);
+}
+
+unsigned long long CStopWatch::start()
+{
+	::QueryPerformanceCounter(&m_start);
+
+	return (unsigned long long)(m_start.QuadPart / m_frequencyS.QuadPart);
+}
+
+unsigned int CStopWatch::elapsed()
+{
+	LARGE_INTEGER now;
+	::QueryPerformanceCounter(&now);
+
+	LARGE_INTEGER temp;
+	temp.QuadPart = (now.QuadPart - m_start.QuadPart) * 1000;
+
+	return (unsigned int)(temp.QuadPart / m_frequencyS.QuadPart);
+}
+
+#else
+
+#include <cstdio>
+#include <ctime>
+
+CStopWatch::CStopWatch() :
+m_startMS(0ULL)
+{
+}
+
+CStopWatch::~CStopWatch()
+{
+}
+
+unsigned long long CStopWatch::time() const
+{
+	struct timeval now;
+	::gettimeofday(&now, NULL);
+
+	return now.tv_sec * 1000ULL + now.tv_usec / 1000ULL;
+}
+
+unsigned long long CStopWatch::start()
+{
+	struct timespec now;
+	::clock_gettime(CLOCK_MONOTONIC, &now);
+
+	m_startMS = now.tv_sec * 1000ULL + now.tv_nsec / 1000000ULL;
+
+	return m_startMS;
+}
+
+unsigned int CStopWatch::elapsed()
+{
+	struct timespec now;
+	::clock_gettime(CLOCK_MONOTONIC, &now);
+
+	unsigned long long nowMS = now.tv_sec * 1000ULL + now.tv_nsec / 1000000ULL;
+
+	return nowMS - m_startMS;
+}
+
+#endif