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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qqmlprofiler_p.h"
#include "qqmlprofilerservice_p.h"
#include "qqmldebugservice_p.h"
QT_BEGIN_NAMESPACE
// convert to QByteArrays that can be sent to the debug client
// use of QDataStream can skew results
// (see tst_qqmldebugtrace::trace() benchmark)
void QQmlProfilerData::toByteArrays(QList<QByteArray> &messages) const
{
QByteArray data;
Q_ASSERT_X(((messageType | detailType) & (1 << 31)) == 0, Q_FUNC_INFO, "You can use at most 31 message types and 31 detail types.");
for (uint decodedMessageType = 0; (messageType >> decodedMessageType) != 0; ++decodedMessageType) {
if ((messageType & (1 << decodedMessageType)) == 0)
continue;
for (uint decodedDetailType = 0; (detailType >> decodedDetailType) != 0; ++decodedDetailType) {
if ((detailType & (1 << decodedDetailType)) == 0)
continue;
//### using QDataStream is relatively expensive
QQmlDebugStream ds(&data, QIODevice::WriteOnly);
ds << time << decodedMessageType << decodedDetailType;
switch (decodedMessageType) {
case QQmlProfilerDefinitions::RangeStart:
if (decodedDetailType == (int)QQmlProfilerDefinitions::Binding)
ds << QQmlProfilerDefinitions::QmlBinding;
break;
case QQmlProfilerDefinitions::RangeData:
ds << detailString;
break;
case QQmlProfilerDefinitions::RangeLocation:
ds << (detailUrl.isEmpty() ? detailString : detailUrl.toString()) << x << y;
break;
case QQmlProfilerDefinitions::RangeEnd: break;
default:
Q_ASSERT_X(false, Q_FUNC_INFO, "Invalid message type.");
break;
}
messages << data;
data.clear();
}
}
}
QQmlProfilerAdapter::QQmlProfilerAdapter(QQmlProfilerService *service, QQmlEnginePrivate *engine) :
QQmlAbstractProfilerAdapter(service)
{
engine->enableProfiler();
connect(this, SIGNAL(profilingEnabled()), engine->profiler, SLOT(startProfiling()));
connect(this, SIGNAL(profilingEnabledWhileWaiting()),
engine->profiler, SLOT(startProfiling()), Qt::DirectConnection);
connect(this, SIGNAL(profilingDisabled()), engine->profiler, SLOT(stopProfiling()));
connect(this, SIGNAL(profilingDisabledWhileWaiting()),
engine->profiler, SLOT(stopProfiling()), Qt::DirectConnection);
connect(this, SIGNAL(dataRequested()), engine->profiler, SLOT(reportData()));
connect(this, SIGNAL(referenceTimeKnown(const QElapsedTimer &)),
engine->profiler, SLOT(setTimer(const QElapsedTimer &)));
connect(engine->profiler, SIGNAL(dataReady(const QList<QQmlProfilerData> &)),
this, SLOT(receiveData(const QList<QQmlProfilerData> &)));
}
qint64 QQmlProfilerAdapter::sendMessages(qint64 until, QList<QByteArray> &messages)
{
while (!data.empty() && data.front().time <= until) {
data.front().toByteArrays(messages);
data.pop_front();
}
return data.empty() ? -1 : data.front().time;
}
void QQmlProfilerAdapter::receiveData(const QList<QQmlProfilerData> &new_data)
{
data = new_data;
service->dataReady(this);
}
QQmlProfiler::QQmlProfiler() : enabled(false)
{
static int metatype = qRegisterMetaType<QList<QQmlProfilerData> >();
Q_UNUSED(metatype);
m_timer.start();
}
void QQmlProfiler::startProfiling()
{
enabled = true;
}
void QQmlProfiler::stopProfiling()
{
enabled = false;
reportData();
m_data.clear();
}
void QQmlProfiler::reportData()
{
QList<QQmlProfilerData> result;
result.reserve(m_data.size());
for (int i = 0; i < m_data.size(); ++i)
result.append(m_data[i]);
emit dataReady(result);
}
/*!
* \fn void QQmlVmeProfiler::Data::clear()
* Resets the profiling data to defaults.
*/
/*!
* \fn bool QQmlVmeProfiler::startBackground(const QString &typeName)
* If profiling is enabled clears the current range data, then stops the
* profiler previously running in the foreground if any, then starts a new one
* in the background, setting the given typeName. \a typeName is the type of
* object being created.
*/
/*!
* \fn bool QQmlVmeProfiler::start(const QString &typeName, const QUrl &url, int line, int column)
* If profiling is enabled clears the current range data, then stops the
* profiler previously running in the foreground if any, then starts a new one
* in the foreground, setting the given location. \a url is the URL of
* file being executed, \line line is the current line in in that file, and
* \a column is the current column in that file.
*/
/*!
* \fn bool QQmlVmeProfiler::pop()
* Stops the currently running profiler, if any, then retrieves an old one from the stack
* of paused profilers and starts that if possible.
*/
/*!
* \fn void QQmlVmeProfiler::push()
* Pushes the currently running profiler on the stack of paused profilers. Note: The profiler
* isn't paused here. That's a separate step. If it's never paused, but pop()'ed later that
* won't do any harm, though.
*/
/*!
* \fn void QQmlVmeProfiler::clear()
* Stops the currently running (foreground and background) profilers and removes all saved
* data about paused profilers.
*/
/*!
* \fn void QQmlVmeProfiler::stop()
* Stop profiler running in the foreground, if any.
*/
/*!
* \fn bool QQmlVmeProfiler::foreground(const QUrl &url, int line, int column)
* Stops the profiler currently running in the foreground, if any and puts the
* next profiler from the background in its place if there are any profilers in
* the background. Additionally the rangeLocation is set. \a url is the URL of
* file being executed, \line line is the current line in in that file, and
* \a column is the current column in that file.
*/
QT_END_NAMESPACE
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