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