Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-qml into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/qt-qml: (151 commits)
  expect fail for some PinchArea tests on mac
  Allow functions to be passed in as values for grouped properties
  Fix lineHeight autotests.
  Update Docs, Examples and Demos for new CreateObject overloadable
  Adding support for group properties in Component::CreateObject()
  Update test, versioning is fixed so expect-fail no longer needed
  Test failure fixed - remove XFAIL
  photoviewer needs QtQuick 1.1 for Image::cache
  disable some pincharea tests on mac temporarily
  Fix failing test on mac for Qt.application
  Fix test breakage for qdeclarativeworkerscript
  Fix typo in error message.
  Doc fix for lineHeight.
  Add support for line spacing in Text element.
  Fixing right-to-left text in Text and TextInput
  Fix MaximumLineCount in Text and add tests
  Ensure simple objects also get the appropriate property cache
  Add test for Loader implicitWidth/implicitHeight
  Don't crash when appending a null item
  Test for passing functions to createObject() for property bindings
  ...

1 files changed, 226 insertions, 0 deletions

diff --git a/src/declarative/qml/qperformancetimer.cpp b/src/declarative/qml/qperformancetimer.cpp
new file mode 100644
index 0000000..1d7ca80
--- /dev/null
+++ b/src/declarative/qml/qperformancetimer.cpp
@@ -0,0 +1,226 @@
+/****************************************************************************
+**
+** 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 QtDeclarative 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 "qperformancetimer_p.h"
+
+#if defined(Q_OS_MAC)
+#include <sys/time.h>
+#include <unistd.h>
+#include <mach/mach_time.h>
+#elif defined(Q_OS_UNIX)
+#include <sys/time.h>
+#include <time.h>
+#include <unistd.h>
+#elif defined(Q_OS_SYMBIAN)
+#include <e32std.h>
+#include <sys/time.h>
+#include <hal.h>
+#elif defined(Q_OS_WIN)
+#include <windows.h>
+#endif
+
+// mac/unix code heavily copied from QElapsedTimer
+
+QT_BEGIN_NAMESPACE
+
+////////////////////////////// Mac //////////////////////////////
+#if defined(Q_OS_MAC)
+
+static mach_timebase_info_data_t info = {0,0};
+static qint64 absoluteToNSecs(qint64 cpuTime)
+{
+    if (info.denom == 0)
+        mach_timebase_info(&info);
+    qint64 nsecs = cpuTime * info.numer / info.denom;
+    return nsecs;
+}
+
+void QPerformanceTimer::start()
+{
+    t1 = mach_absolute_time();
+}
+
+qint64 QPerformanceTimer::elapsed() const
+{
+    uint64_t cpu_time = mach_absolute_time();
+    return absoluteToNSecs(cpu_time - t1);
+}
+
+////////////////////////////// Unix //////////////////////////////
+#elif defined(Q_OS_UNIX)
+
+#if defined(QT_NO_CLOCK_MONOTONIC) || defined(QT_BOOTSTRAPPED)
+// turn off the monotonic clock
+# ifdef _POSIX_MONOTONIC_CLOCK
+#  undef _POSIX_MONOTONIC_CLOCK
+# endif
+# define _POSIX_MONOTONIC_CLOCK -1
+#endif
+
+#if (_POSIX_MONOTONIC_CLOCK-0 != 0)
+static const bool monotonicClockChecked = true;
+static const bool monotonicClockAvailable = _POSIX_MONOTONIC_CLOCK > 0;
+#else
+static int monotonicClockChecked = false;
+static int monotonicClockAvailable = false;
+#endif
+
+#ifdef Q_CC_GNU
+# define is_likely(x) __builtin_expect((x), 1)
+#else
+# define is_likely(x) (x)
+#endif
+#define load_acquire(x) ((volatile const int&)(x))
+#define store_release(x,v) ((volatile int&)(x) = (v))
+
+static void unixCheckClockType()
+{
+#if (_POSIX_MONOTONIC_CLOCK-0 == 0)
+    if (is_likely(load_acquire(monotonicClockChecked)))
+        return;
+
+# if defined(_SC_MONOTONIC_CLOCK)
+    // detect if the system support monotonic timers
+    long x = sysconf(_SC_MONOTONIC_CLOCK);
+    store_release(monotonicClockAvailable, x >= 200112L);
+# endif
+
+    store_release(monotonicClockChecked, true);
+#endif
+}
+
+static inline void do_gettime(qint64 *sec, qint64 *frac)
+{
+#if (_POSIX_MONOTONIC_CLOCK-0 >= 0)
+    unixCheckClockType();
+    if (is_likely(monotonicClockAvailable)) {
+        timespec ts;
+        clock_gettime(CLOCK_MONOTONIC, &ts);
+        *sec = ts.tv_sec;
+        *frac = ts.tv_nsec;
+        return;
+    }
+#endif
+    *sec = 0;
+    *frac = 0;
+}
+
+void QPerformanceTimer::start()
+{
+    do_gettime(&t1, &t2);
+}
+
+qint64 QPerformanceTimer::elapsed() const
+{
+    qint64 sec, frac;
+    do_gettime(&sec, &frac);
+    sec = sec - t1;
+    frac = frac - t2;
+
+    return sec * Q_INT64_C(1000000000) + frac;
+}
+
+////////////////////////////// Symbian //////////////////////////////
+#elif defined(Q_OS_SYMBIAN)
+
+static qint64 getTimeFromTick(quint64 elapsed)
+{
+    static TInt freq;
+    if (!freq)
+        HAL::Get(HALData::EFastCounterFrequency, freq);
+
+    // ### not sure on units
+    return elapsed / freq;
+}
+
+void QPerformanceTimer::start()
+{
+    t1 = User::FastCounter();
+}
+
+qint64 QPerformanceTimer::elapsed() const
+{
+    return getTimeFromTick(User::FastCounter() - t1);
+}
+
+////////////////////////////// Windows //////////////////////////////
+#elif defined(Q_OS_WIN)
+
+static qint64 getTimeFromTick(quint64 elapsed)
+{
+    static LARGE_INTEGER freq;
+    if (!freq.QuadPart)
+        QueryPerformanceFrequency(&freq);
+    return 1000000000 * elapsed / freq.QuadPart;
+}
+
+void QPerformanceTimer::start()
+{
+    LARGE_INTEGER li;
+    QueryPerformanceCounter(&li);
+    t1 = li.QuadPart;
+}
+
+qint64 QPerformanceTimer::elapsed() const
+{
+    LARGE_INTEGER li;
+    QueryPerformanceCounter(&li);
+    return getTimeFromTick(li.QuadPart - t1);
+}
+
+////////////////////////////// Default //////////////////////////////
+#else
+
+// default implementation (no hi-perf timer) does nothing
+void QPerformanceTimer::start()
+{
+}
+
+qint64 QPerformanceTimer::elapsed() const
+{
+    return 0;
+}
+
+#endif
+
+QT_END_NAMESPACE
+
+