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author | Thiago Macieira <thiago.macieira@nokia.com> | 2010-02-19 13:10:05 (GMT) |
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committer | Thiago Macieira <thiago.macieira@nokia.com> | 2010-03-17 10:54:16 (GMT) |
commit | ca0def08d1ec2575546f7bfa3759f24288ba8e2a (patch) | |
tree | 8648dcc472b8790fa641caf734c174ed894cea06 /src | |
parent | 3e20aa117f4867aa40e03103fcb4e1a54b42dd1c (diff) | |
download | Qt-ca0def08d1ec2575546f7bfa3759f24288ba8e2a.zip Qt-ca0def08d1ec2575546f7bfa3759f24288ba8e2a.tar.gz Qt-ca0def08d1ec2575546f7bfa3759f24288ba8e2a.tar.bz2 |
Add the Symbian version of QTimestamp.
This code is disabled
Diffstat (limited to 'src')
-rw-r--r-- | src/corelib/tools/qtimestamp_symbian.cpp | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/corelib/tools/qtimestamp_symbian.cpp b/src/corelib/tools/qtimestamp_symbian.cpp new file mode 100644 index 0000000..e78597c --- /dev/null +++ b/src/corelib/tools/qtimestamp_symbian.cpp @@ -0,0 +1,117 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, 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. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qtimestamp.h" +#include <e32std.h> + +QT_BEGIN_NAMESPACE + +// return quint64 to avoid sign-extension +static quint64 getMillisecondFromTick() +{ + static TInt nanokernel_tick_period; + if (!nanokernel_tick_period) + HAL::Get(HAL::ENanoTickPeriod, nanokernel_tick_period); + return nanokernel_tick_period * User::NTickCount(); +} + +static qint64 difference(qint64 a, qint64 b) +{ + qint64 retval = a - b; + // there can be 32-bit rollover + // assume there were rollovers if the difference is negative by more than + // 75% of the 32-bit range + + if (retval < Q_INT64_C(-0xc0000000)) + retval += Q_UINT64_C(0x100000000); + return retval; +} + +bool QTimestamp::isMonotonic() +{ + return true; +} + +void QTimestamp::start() +{ + t1 = getMillisecondFromTick(); + t2 = 0; +} + +qint64 QTimestamp::restart() +{ + qint64 oldt1 = t1; + t1 = getMillisecondFromTick(); + return difference(t1, oldt1); +} + +qint64 QTimestamp::elapsed() const +{ + return difference(getMillisecondFromTick(), t1); +} + +qint64 QTimestamp::msecsTo(const QTimestamp &other) const +{ + return difference(other.t1, t1); +} + +void QTimestamp::addMSecs(int ms) +{ + // simulate a 32-bit rollover + t1 = quint32(t1 + ms); +} + +qint64 QTimestamp::secsTo(const QTimestamp &other) const +{ + return msecsTo(other) / 1000; +} + +void QTimestamp::addSecs(int secs) +{ + addMSecs(secs * 1000); +} + +bool operator<(const QTimestamp &v1, const QTimestamp &v2) +{ + return difference(v1.t1, v2.t1) < 0; +} + +QT_END_NAMESPACE |