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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 218 insertions, 0 deletions

diff --git a/src/declarative/debugger/qdeclarativedebugtrace.cpp b/src/declarative/debugger/qdeclarativedebugtrace.cpp
new file mode 100644
index 0000000000..6f28736f52
--- /dev/null
+++ b/src/declarative/debugger/qdeclarativedebugtrace.cpp
@@ -0,0 +1,218 @@
+/****************************************************************************
+**
+** 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 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 "qdeclarativedebugtrace_p.h"
+
+#include <QtCore/qdatastream.h>
+#include <QtCore/qurl.h>
+#include <QtCore/qtimer.h>
+
+Q_GLOBAL_STATIC(QDeclarativeDebugTrace, traceInstance);
+
+// convert to a QByteArray that can be sent to the debug client
+// use of QDataStream can skew results if m_deferredSend == false
+//     (see tst_qperformancetimer::trace() benchmark)
+QByteArray QDeclarativeDebugData::toByteArray() const
+{
+    QByteArray data;
+    //### using QDataStream is relatively expensive
+    QDataStream ds(&data, QIODevice::WriteOnly);
+    ds << time << messageType << detailType;
+    if (messageType == (int)QDeclarativeDebugTrace::RangeData)
+        ds << detailData;
+    if (messageType == (int)QDeclarativeDebugTrace::RangeLocation)
+        ds << detailData << line;
+    return data;
+}
+
+QDeclarativeDebugTrace::QDeclarativeDebugTrace()
+: QDeclarativeDebugService(QLatin1String("CanvasFrameRate")),
+  m_enabled(false), m_deferredSend(true)
+{
+    m_timer.start();
+}
+
+void QDeclarativeDebugTrace::addEvent(EventType t)
+{
+    if (QDeclarativeDebugService::isDebuggingEnabled()) 
+        traceInstance()->addEventImpl(t);
+}
+
+void QDeclarativeDebugTrace::startRange(RangeType t)
+{
+    if (QDeclarativeDebugService::isDebuggingEnabled()) 
+        traceInstance()->startRangeImpl(t);
+}
+
+void QDeclarativeDebugTrace::rangeData(RangeType t, const QString &data)
+{
+    if (QDeclarativeDebugService::isDebuggingEnabled()) 
+        traceInstance()->rangeDataImpl(t, data);
+}
+
+void QDeclarativeDebugTrace::rangeData(RangeType t, const QUrl &data)
+{
+    if (QDeclarativeDebugService::isDebuggingEnabled())
+        traceInstance()->rangeDataImpl(t, data);
+}
+
+void QDeclarativeDebugTrace::rangeLocation(RangeType t, const QString &fileName, int line)
+{
+    if (QDeclarativeDebugService::isDebuggingEnabled())
+        traceInstance()->rangeLocationImpl(t, fileName, line);
+}
+
+void QDeclarativeDebugTrace::rangeLocation(RangeType t, const QUrl &fileName, int line)
+{
+    if (QDeclarativeDebugService::isDebuggingEnabled())
+        traceInstance()->rangeLocationImpl(t, fileName, line);
+}
+
+void QDeclarativeDebugTrace::endRange(RangeType t)
+{
+    if (QDeclarativeDebugService::isDebuggingEnabled()) 
+        traceInstance()->endRangeImpl(t);
+}
+
+void QDeclarativeDebugTrace::addEventImpl(EventType event)
+{
+    if (status() != Enabled || !m_enabled)
+        return;
+
+    QDeclarativeDebugData ed = {m_timer.elapsed(), (int)Event, (int)event, QString(), -1};
+    processMessage(ed);
+}
+
+void QDeclarativeDebugTrace::startRangeImpl(RangeType range)
+{
+    if (status() != Enabled || !m_enabled)
+        return;
+
+    QDeclarativeDebugData rd = {m_timer.elapsed(), (int)RangeStart, (int)range, QString(), -1};
+    processMessage(rd);
+}
+
+void QDeclarativeDebugTrace::rangeDataImpl(RangeType range, const QString &rData)
+{
+    if (status() != Enabled || !m_enabled)
+        return;
+
+    QDeclarativeDebugData rd = {m_timer.elapsed(), (int)RangeData, (int)range, rData, -1};
+    processMessage(rd);
+}
+
+void QDeclarativeDebugTrace::rangeDataImpl(RangeType range, const QUrl &rData)
+{
+    if (status() != Enabled || !m_enabled)
+        return;
+
+    QDeclarativeDebugData rd = {m_timer.elapsed(), (int)RangeData, (int)range, rData.toString(QUrl::FormattingOption(0x100)), -1};
+    processMessage(rd);
+}
+
+void QDeclarativeDebugTrace::rangeLocationImpl(RangeType range, const QString &fileName, int line)
+{
+    if (status() != Enabled || !m_enabled)
+        return;
+
+    QDeclarativeDebugData rd = {m_timer.elapsed(), (int)RangeLocation, (int)range, fileName, line};
+    processMessage(rd);
+}
+
+void QDeclarativeDebugTrace::rangeLocationImpl(RangeType range, const QUrl &fileName, int line)
+{
+    if (status() != Enabled || !m_enabled)
+        return;
+
+    QDeclarativeDebugData rd = {m_timer.elapsed(), (int)RangeLocation, (int)range, fileName.toString(QUrl::FormattingOption(0x100)), line};
+    processMessage(rd);
+}
+
+void QDeclarativeDebugTrace::endRangeImpl(RangeType range)
+{
+    if (status() != Enabled || !m_enabled)
+        return;
+
+    QDeclarativeDebugData rd = {m_timer.elapsed(), (int)RangeEnd, (int)range, QString(), -1};
+    processMessage(rd);
+}
+
+/*
+    Either send the message directly, or queue up
+    a list of messages to send later (via sendMessages)
+*/
+void QDeclarativeDebugTrace::processMessage(const QDeclarativeDebugData &message)
+{
+    if (m_deferredSend)
+        m_data.append(message);
+    else
+        sendMessage(message.toByteArray());
+}
+
+/*
+    Send the messages queued up by processMessage
+*/
+void QDeclarativeDebugTrace::sendMessages()
+{
+    if (m_deferredSend) {
+        //### this is a suboptimal way to send batched messages
+        for (int i = 0; i < m_data.count(); ++i)
+            sendMessage(m_data.at(i).toByteArray());
+        m_data.clear();
+
+        //indicate completion
+        QByteArray data;
+        QDataStream ds(&data, QIODevice::WriteOnly);
+        ds << (qint64)-1 << (int)Complete;
+        sendMessage(data);
+    }
+}
+
+void QDeclarativeDebugTrace::messageReceived(const QByteArray &message)
+{
+    QByteArray rwData = message;
+    QDataStream stream(&rwData, QIODevice::ReadOnly);
+
+    stream >> m_enabled;
+
+    if (!m_enabled)
+        sendMessages();
+}