Add the Symbian version of QTimestamp.

This code is disabled

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