| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the QtCore module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** This file may be used under the terms of the GNU Lesser General Public |
| ** License version 2.1 as published by the Free Software Foundation and |
| ** appearing in the file LICENSE.LGPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU Lesser |
| ** General Public License version 2.1 requirements will be met: |
| ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
| ** |
| ** In addition, as a special exception, Nokia gives you certain additional |
| ** rights. These rights are described in the Nokia Qt LGPL Exception |
| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU General |
| ** Public License version 3.0 as published by the Free Software Foundation |
| ** and appearing in the file LICENSE.GPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU General |
| ** Public License version 3.0 requirements will be met: |
| ** http://www.gnu.org/copyleft/gpl.html. |
| ** |
| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qelapsedtimer.h" |
| #include "qpair.h" |
| #include <e32std.h> |
| #include <sys/time.h> |
| #include <hal.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| // return quint64 to avoid sign-extension |
| static quint64 getMicrosecondFromTick() |
| { |
| static TInt nanokernel_tick_period; |
| if (!nanokernel_tick_period) |
| HAL::Get(HAL::ENanoTickPeriod, nanokernel_tick_period); |
| |
| static quint32 highdword = 0; |
| static quint32 lastval = 0; |
| quint32 val = User::NTickCount(); |
| if (val < lastval) |
| ++highdword; |
| lastval = val; |
| |
| return nanokernel_tick_period * (val | (quint64(highdword) << 32)); |
| } |
| |
| static quint64 getMillisecondFromTick() |
| { |
| return getMicrosecondFromTick() / 1000; |
| } |
| |
| timeval qt_gettime() |
| { |
| timeval tv; |
| quint64 now = getMicrosecondFromTick(); |
| tv.tv_sec = now / 1000000; |
| tv.tv_usec = now % 1000000; |
| |
| return tv; |
| } |
| |
| QElapsedTimer::ClockType QElapsedTimer::clockType() |
| { |
| return TickCounter; |
| } |
| |
| bool QElapsedTimer::isMonotonic() |
| { |
| return true; |
| } |
| |
| void QElapsedTimer::start() |
| { |
| t1 = getMillisecondFromTick(); |
| t2 = 0; |
| } |
| |
| qint64 QElapsedTimer::restart() |
| { |
| qint64 oldt1 = t1; |
| t1 = getMillisecondFromTick(); |
| t2 = 0; |
| return t1 - oldt1; |
| } |
| |
| qint64 QElapsedTimer::elapsed() const |
| { |
| return getMillisecondFromTick() - t1; |
| } |
| |
| qint64 QElapsedTimer::msecsSinceReference() const |
| { |
| return t1; |
| } |
| |
| qint64 QElapsedTimer::msecsTo(const QElapsedTimer &other) const |
| { |
| return other.t1 - t1; |
| } |
| |
| qint64 QElapsedTimer::secsTo(const QElapsedTimer &other) const |
| { |
| return msecsTo(other) / 1000; |
| } |
| |
| bool operator<(const QElapsedTimer &v1, const QElapsedTimer &v2) |
| { |
| return (v1.t1 - v2.t1) < 0; |
| } |
| |
| QT_END_NAMESPACE |