5 files changed, 120 insertions, 4 deletions
diff --git a/src/declarative/debugger/qdeclarativedebugtrace.cpp b/src/declarative/debugger/qdeclarativedebugtrace.cpp
index 1c2d440..d4ede07 100644
--- a/src/declarative/debugger/qdeclarativedebugtrace.cpp
+++ b/src/declarative/debugger/qdeclarativedebugtrace.cpp
@@ -44,8 +44,68 @@
 #include <QtCore/qdatastream.h>
 #include <QtCore/qurl.h>
 #include <QtCore/qtimer.h>
+#include <QDebug>
+
+#ifdef CUSTOM_DECLARATIVE_DEBUG_TRACE_INSTANCE
+
+namespace {
+
+    class GlobalInstanceDeleter
+    {
+    private:
+        QBasicAtomicPointer<QDeclarativeDebugTrace> &m_pointer;
+    public:
+        GlobalInstanceDeleter(QBasicAtomicPointer<QDeclarativeDebugTrace> &p)
+        : m_pointer(p)
+        {}
+        ~GlobalInstanceDeleter()
+        {
+            delete m_pointer;
+            m_pointer = 0;
+        }
+    };
+
+    QBasicAtomicPointer<QDeclarativeDebugTrace> s_globalInstance = Q_BASIC_ATOMIC_INITIALIZER(0);
+}
+
+
+static QDeclarativeDebugTrace *traceInstance()
+{
+    return QDeclarativeDebugTrace::globalInstance();
+}
+
+QDeclarativeDebugTrace *QDeclarativeDebugTrace::globalInstance()
+{
+    if (!s_globalInstance) {
+        // create default QDeclarativeDebugTrace instance if it is not explicitly set by setGlobalInstance(QDeclarativeDebugTrace *instance)
+        // thread safe implementation
+        QDeclarativeDebugTrace *x = new QDeclarativeDebugTrace();
+        if (!s_globalInstance.testAndSetOrdered(0, x))
+            delete x;
+        else
+            static GlobalInstanceDeleter cleanup(s_globalInstance);
+    }
+    return s_globalInstance;
+}
+
+/*!
+ *  Set custom QDeclarativeDebugTrace instance \a custom_instance.
+ *  Function fails if QDeclarativeDebugTrace::globalInstance() was called before.
+ *  QDeclarativeDebugTrace framework takes ownership of the custom instance.
+ */
+void QDeclarativeDebugTrace::setGlobalInstance(QDeclarativeDebugTrace *custom_instance)
+{
+    if (!s_globalInstance.testAndSetOrdered(0, custom_instance)) {
+        qWarning() << "QDeclarativeDebugTrace::setGlobalInstance() - instance already set.";
+        delete custom_instance;
+    } else {
+        static GlobalInstanceDeleter cleanup(s_globalInstance);
+    }
+}
 
+#else // CUSTOM_DECLARATIVE_DEBUG_TRACE_INSTANCE
 Q_GLOBAL_STATIC(QDeclarativeDebugTrace, traceInstance);
+#endif
 
 // convert to a QByteArray that can be sent to the debug client
 // use of QDataStream can skew results if m_deferredSend == false
diff --git a/src/declarative/debugger/qdeclarativedebugtrace_p.h b/src/declarative/debugger/qdeclarativedebugtrace_p.h
index 5a077ac..ef5e618 100644
--- a/src/declarative/debugger/qdeclarativedebugtrace_p.h
+++ b/src/declarative/debugger/qdeclarativedebugtrace_p.h
@@ -44,6 +44,7 @@
 
 #include <private/qdeclarativedebugservice_p.h>
 #include <private/qperformancetimer_p.h>
+#include <QtCore/qglobal.h>
 
 QT_BEGIN_HEADER
 
@@ -63,7 +64,7 @@ struct QDeclarativeDebugData
 };
 
 class QUrl;
-class Q_AUTOTEST_EXPORT QDeclarativeDebugTrace : public QDeclarativeDebugService
+class Q_DECLARATIVE_EXPORT QDeclarativeDebugTrace : public QDeclarativeDebugService
 {
 public:
     enum Message {
@@ -105,6 +106,21 @@ public:
     static void endRange(RangeType);
 
     QDeclarativeDebugTrace();
+#ifdef CUSTOM_DECLARATIVE_DEBUG_TRACE_INSTANCE
+public:
+    static QDeclarativeDebugTrace* globalInstance();
+    static void setGlobalInstance(QDeclarativeDebugTrace *custom_instance);
+protected:
+    virtual void messageReceived(const QByteArray &);
+protected:
+    virtual void addEventImpl(EventType);
+    virtual void startRangeImpl(RangeType);
+    virtual void rangeDataImpl(RangeType, const QString &);
+    virtual void rangeDataImpl(RangeType, const QUrl &);
+    virtual void rangeLocationImpl(RangeType, const QString &, int);
+    virtual void rangeLocationImpl(RangeType, const QUrl &, int);
+    virtual void endRangeImpl(RangeType);
+#else
 protected:
     virtual void messageReceived(const QByteArray &);
 private:
@@ -115,6 +131,7 @@ private:
     void rangeLocationImpl(RangeType, const QString &, int);
     void rangeLocationImpl(RangeType, const QUrl &, int);
     void endRangeImpl(RangeType);
+#endif
     void processMessage(const QDeclarativeDebugData &);
     void sendMessages();
     QPerformanceTimer m_timer;
diff --git a/src/declarative/declarative.pro b/src/declarative/declarative.pro
index 055e4b9..5bf4e01 100644
--- a/src/declarative/declarative.pro
+++ b/src/declarative/declarative.pro
@@ -41,3 +41,6 @@ linux-g++-maemo:DEFINES += QDECLARATIVEVIEW_NOBACKGROUND
 DEFINES += QT_NO_OPENTYPE
 INCLUDEPATH += ../3rdparty/harfbuzz/src
 
+blackberry: {
+    DEFINES   += CUSTOM_DECLARATIVE_DEBUG_TRACE_INSTANCE
+}
diff --git a/src/declarative/qml/qperformancetimer.cpp b/src/declarative/qml/qperformancetimer.cpp
index fd70472..bee61fa 100644
--- a/src/declarative/qml/qperformancetimer.cpp
+++ b/src/declarative/qml/qperformancetimer.cpp
@@ -81,10 +81,18 @@ void QPerformanceTimer::start()
 
 qint64 QPerformanceTimer::elapsed() const
 {
-    uint64_t cpu_time = mach_absolute_time();
+    qint64 cpu_time = mach_absolute_time();
     return absoluteToNSecs(cpu_time - t1);
 }
 
+// return number of nsecs elapsed from timer start time till absoluteMonotonicTimeNs
+// elapsedToAbsoluteTime(0) returns negative value of absolute time (ns) when the timer was started
+qint64 QPerformanceTimer::elapsedToAbsoluteTime(qint64 absoluteMonotonicTimeNs) const
+{
+    qint64 absolute_t1_ns = absoluteToNSecs(t1);
+    return absoluteMonotonicTimeNs - absolute_t1_ns;
+}
+
 ////////////////////////////// Symbian //////////////////////////////
 #elif defined(Q_OS_SYMBIAN)
 
@@ -108,6 +116,12 @@ qint64 QPerformanceTimer::elapsed() const
 }
 
 
+qint64 QPerformanceTimer::elapsedToAbsoluteTime(qint64 absoluteMonotonicTimeNs) const
+{
+    qint64 absolute_t1_ns = getTimeFromTick(t1);
+    return absoluteMonotonicTimeNs - absolute_t1_ns;
+}
+
 ////////////////////////////// Unix //////////////////////////////
 #elif defined(Q_OS_UNIX)
 
@@ -182,6 +196,16 @@ qint64 QPerformanceTimer::elapsed() const
     return sec * Q_INT64_C(1000000000) + frac;
 }
 
+qint64 QPerformanceTimer::elapsedToAbsoluteTime(qint64 absoluteMonotonicTimeNs) const
+{
+    qint64 sec = absoluteMonotonicTimeNs / Q_INT64_C(1000000000);
+    qint64 frac = absoluteMonotonicTimeNs % Q_INT64_C(1000000000);
+    sec = sec - t1;
+    frac = frac - t2;
+
+    return sec * Q_INT64_C(1000000000) + frac;
+}
+
 ////////////////////////////// Windows //////////////////////////////
 #elif defined(Q_OS_WIN)
 
@@ -207,6 +231,12 @@ qint64 QPerformanceTimer::elapsed() const
     return getTimeFromTick(li.QuadPart - t1);
 }
 
+qint64 QPerformanceTimer::elapsedToAbsoluteTime(qint64 absoluteMonotonicTimeNs) const
+{
+    qint64 absolute_t1_ns = getTimeFromTick(t1);
+    return absoluteMonotonicTimeNs - absolute_t1_ns;
+}
+
 ////////////////////////////// Default //////////////////////////////
 #else
 
@@ -220,6 +250,12 @@ qint64 QPerformanceTimer::elapsed() const
     return 0;
 }
 
+qint64 QPerformanceTimer::elapsedToAbsoluteTime(qint64 absoluteMonotonicTimeNs) const
+{
+    Q_UNUSED(absoluteMonotonicTimeNs);
+    return 0;
+}
+
 #endif
 
 QT_END_NAMESPACE
diff --git a/src/declarative/qml/qperformancetimer_p.h b/src/declarative/qml/qperformancetimer_p.h
index cb39382..badba80 100644
--- a/src/declarative/qml/qperformancetimer_p.h
+++ b/src/declarative/qml/qperformancetimer_p.h
@@ -61,12 +61,12 @@ QT_BEGIN_NAMESPACE
 
 QT_MODULE(Declarative)
 
-class Q_AUTOTEST_EXPORT QPerformanceTimer
+class Q_DECLARATIVE_EXPORT QPerformanceTimer
 {
 public:
     void start();
     qint64 elapsed() const;
-
+    qint64 elapsedToAbsoluteTime(qint64 absoluteMonotonicTimeNs) const;
 private:
     qint64 t1;
     qint64 t2;