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/*
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* Portions Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
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*
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* Copyright (c) 2006
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* Francois Dumont
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*
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* This material is provided "as is", with absolutely no warranty expressed
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* or implied. Any use is at your own risk.
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*
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* Permission to use or copy this software for any purpose is hereby granted
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* without fee, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*
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*/
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#ifndef CPPUNIT_TIMER_H
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#define CPPUNIT_TIMER_H
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#ifndef __SYMBIAN32__
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#if defined (_WIN32)
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# define CPPUNIT_WIN32_TIMER
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# include <windows.h>
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#endif
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#endif
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class Timer {
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public:
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Timer() {
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#if defined (CPPUNIT_WIN32_TIMER)
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m_start.LowPart = m_restart.LowPart = m_stop.LowPart = 0;
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m_start.HighPart = m_restart.HighPart = m_stop.HighPart = 0;
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QueryPerformanceFrequency(&m_frequency);
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#endif
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}
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void start() {
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#if defined (CPPUNIT_WIN32_TIMER)
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QueryPerformanceCounter(&m_start);
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#endif
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}
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void restart() {
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#if defined (CPPUNIT_WIN32_TIMER)
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QueryPerformanceCounter(&m_restart);
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if (m_start.HighPart == 0 && m_start.LowPart == 0) {
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m_start = m_restart;
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}
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#endif
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}
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void stop() {
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#if defined (CPPUNIT_WIN32_TIMER)
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LARGE_INTEGER stop;
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QueryPerformanceCounter(&stop);
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if ((m_stop.HighPart != 0 || m_stop.LowPart != 0) &&
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m_restart.HighPart != 0 && m_restart.LowPart != 0) {
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m_stop.HighPart += (stop.HighPart - m_restart.HighPart);
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if (stop.LowPart < m_restart.LowPart) {
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if (m_restart.LowPart - stop.LowPart > m_stop.LowPart) {
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m_stop.HighPart -= 1;
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}
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m_stop.LowPart -= m_restart.LowPart - stop.LowPart;
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}
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else {
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if (stop.LowPart - m_restart.LowPart > 0xFFFFFFFF - m_stop.LowPart) {
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m_stop.HighPart += 1;
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}
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m_stop.LowPart += stop.LowPart - m_restart.LowPart;
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}
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}
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else {
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m_stop = stop;
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}
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#endif
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}
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double elapsedMilliseconds() const {
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#if defined (CPPUNIT_WIN32_TIMER)
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LARGE_INTEGER elapsed;
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elapsed.HighPart = m_stop.HighPart - m_start.HighPart;
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elapsed.LowPart = m_stop.LowPart - m_start.LowPart;
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return (double)elapsed.QuadPart / (double)m_frequency.QuadPart * 1000;
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#else
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return 0;
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#endif
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}
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static bool supported() {
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#if defined (CPPUNIT_WIN32_TIMER)
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return true;
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#else
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return false;
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#endif
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}
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private:
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#if defined (CPPUNIT_WIN32_TIMER)
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LARGE_INTEGER m_frequency;
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LARGE_INTEGER m_start, m_stop, m_restart;
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#endif
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};
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#endif
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