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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qv4profileradapter.h"
#include "qqmlprofilerservice.h"
QT_BEGIN_NAMESPACE
QV4ProfilerAdapter::QV4ProfilerAdapter(QQmlProfilerService *service, QV4::ExecutionEngine *engine) :
QQmlAbstractProfilerAdapter(service), dataPos(0), memoryPos(0)
{
engine->enableProfiler();
connect(this, SIGNAL(profilingEnabled(quint64)),
engine->profiler, SLOT(startProfiling(quint64)));
connect(this, SIGNAL(profilingEnabledWhileWaiting(quint64)),
engine->profiler, SLOT(startProfiling(quint64)), 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(QElapsedTimer)),
engine->profiler, SLOT(setTimer(QElapsedTimer)));
connect(engine->profiler, SIGNAL(dataReady(QVector<QV4::Profiling::FunctionCallProperties>,
QVector<QV4::Profiling::MemoryAllocationProperties>)),
this, SLOT(receiveData(QVector<QV4::Profiling::FunctionCallProperties>,
QVector<QV4::Profiling::MemoryAllocationProperties>)));
}
qint64 QV4ProfilerAdapter::appendMemoryEvents(qint64 until, QList<QByteArray> &messages)
{
QByteArray message;
while (memory_data.length() > memoryPos && memory_data[memoryPos].timestamp <= until) {
QQmlDebugStream d(&message, QIODevice::WriteOnly);
QV4::Profiling::MemoryAllocationProperties &props = memory_data[memoryPos];
d << props.timestamp << MemoryAllocation << props.type << props.size;
++memoryPos;
messages.append(message);
}
return memory_data.length() == memoryPos ? -1 : memory_data[memoryPos].timestamp;
}
qint64 QV4ProfilerAdapter::finalizeMessages(qint64 until, QList<QByteArray> &messages,
qint64 callNext)
{
if (callNext == -1) {
data.clear();
dataPos = 0;
}
qint64 memoryNext = appendMemoryEvents(until, messages);
if (memoryNext == -1) {
memory_data.clear();
memoryPos = 0;
return callNext;
}
return callNext == -1 ? memoryNext : qMin(callNext, memoryNext);
}
qint64 QV4ProfilerAdapter::sendMessages(qint64 until, QList<QByteArray> &messages)
{
QByteArray message;
while (true) {
while (!stack.isEmpty() && (dataPos == data.length() ||
stack.top() <= data[dataPos].start)) {
if (stack.top() > until)
return finalizeMessages(until, messages, stack.top());
appendMemoryEvents(stack.top(), messages);
QQmlDebugStream d(&message, QIODevice::WriteOnly);
d << stack.pop() << RangeEnd << Javascript;
messages.append(message);
}
while (dataPos != data.length() && (stack.empty() || data[dataPos].start < stack.top())) {
const QV4::Profiling::FunctionCallProperties &props = data[dataPos];
if (props.start > until)
return finalizeMessages(until, messages, props.start);
appendMemoryEvents(props.start, messages);
QQmlDebugStream d_start(&message, QIODevice::WriteOnly);
d_start << props.start << RangeStart << Javascript;
messages.push_back(message);
message.clear();
QQmlDebugStream d_location(&message, QIODevice::WriteOnly);
d_location << props.start << RangeLocation << Javascript << props.file << props.line
<< props.column;
messages.push_back(message);
message.clear();
QQmlDebugStream d_data(&message, QIODevice::WriteOnly);
d_data << props.start << RangeData << Javascript << props.name;
messages.push_back(message);
message.clear();
stack.push(props.end);
++dataPos;
}
if (stack.empty() && dataPos == data.length())
return finalizeMessages(until, messages, -1);
}
}
void QV4ProfilerAdapter::receiveData(
const QVector<QV4::Profiling::FunctionCallProperties> &new_data,
const QVector<QV4::Profiling::MemoryAllocationProperties> &new_memory_data)
{
// In rare cases it could be that another flush or stop event is processed while data from
// the previous one is still pending. In that case we just append the data.
if (data.isEmpty())
data = new_data;
else
data.append(new_data);
if (memory_data.isEmpty())
memory_data = new_memory_data;
else
memory_data.append(new_memory_data);
service->dataReady(this);
}
QT_END_NAMESPACE
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