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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 "qqmlabstractprofileradapter_p.h"
QT_BEGIN_NAMESPACE
/*!
* \class QQmlAbstractProfilerAdapter
* Abstract base class for all adapters between profilers and the QQmlProfilerService. Adapters have
* to retrieve profiler-specific data and convert it to the format sent over the wire. Adapters must
* live in the QDebugServer thread but the actual profilers can live in different threads. The
* recommended way to deal with this is passing the profiling data through a signal/slot connection.
*/
/*!
* \fn void QQmlAbstractProfilerAdapter::dataReady(QQmlAbstractProfilerAdapter *)
* Signals that data has been extracted from the profiler and is readily available in the adapter.
* The primary data representation is in satellite's format. It should be transformed and deleted
* on the fly with sendMessages.
*/
/*!
* \fn void QQmlAbstractProfilerAdapter::dataRequested()
* Signals that data has been requested by the \c QQmlProfilerService. This signal should be
* connected to a slot in the profiler and the profiler should then transfer its currently available
* profiling data to the adapter as soon as possible.
*/
/*!
* \fn qint64 QQmlAbstractProfilerAdapter::sendMessages(qint64 until, QList<QByteArray> &messages)
* Append the messages up to the timestamp \a until, chronologically sorted, to \a messages. Keep
* track of the messages already sent and with each subsequent call to this method start with the
* first one not yet sent. Messages that have been sent can be deleted. When new data from the
* profiler arrives the information about the last sent message must be reset. Return the timestamp
* of the next message after \a until or \c -1 if there is no such message.
* The profiler service keeps a list of adapters, sorted by time of next message and keeps querying
* the first one to send messages up to the time of the second one. Like that we get chronologically
* sorted messages and can occasionally post the messages to exploit parallelism and save memory.
*/
/*!
* \fn qint64 QQmlAbstractProfilerAdapter::startProfiling()
* Emits either \c profilingEnabled() or \c profilingEnabledWhileWaiting(), depending on \c waiting.
* If the profiler's thread is waiting for an initial start signal we can emit the signal over a
* \c Qt::DirectConnection to avoid the delay of the event loop.
*/
void QQmlAbstractProfilerAdapter::startProfiling()
{
if (waiting)
emit profilingEnabledWhileWaiting();
else
emit profilingEnabled();
running = true;
}
/*!
* \fn qint64 QQmlAbstractProfilerAdapter::stopProfiling()
* Emits either \c profilingDisabled() or \c profilingDisabledWhileWaiting(), depending on
* \c waiting. If the profiler's thread is waiting for an initial start signal we can emit the
* signal over a \c Qt::DirectConnection to avoid the delay of the event loop.
*/
void QQmlAbstractProfilerAdapter::stopProfiling() {
if (waiting)
emit profilingDisabledWhileWaiting();
else
emit profilingDisabled();
running = false;
}
QT_END_NAMESPACE
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