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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#pragma once
#include "perfprofiler_global.h"
#include "perfeventtype.h"
#include <tracing/traceevent.h>
#include <utils/qtcassert.h>
#include <QVariant>
#include <QVector>
#include <QDataStream>
namespace PerfProfiler {
namespace Internal {
class PerfEvent : public Timeline::TraceEvent
{
public:
static const qint32 staticClassId = 0x70657266; // 'perf'
PerfEvent() : TraceEvent(staticClassId) {}
enum SpecialTypeId {
AmbiguousTypeId = 0,
InvalidTypeId = -1,
ThreadStartTypeId = -2,
ThreadEndTypeId = -3,
LostTypeId = -4,
ContextSwitchTypeId = -5,
LastSpecialTypeId = -6
};
int numAttributes() const { return m_values.length() + 1; }
qint32 attributeId(int i) const { return i == 0 ? typeIndex() : m_values[i - 1].first; }
quint64 attributeValue(int i) const { return i == 0 ? m_value : m_values[i - 1].second; }
const QVector<qint32> &origFrames() const { return m_origFrames; }
quint8 origNumGuessedFrames() const { return m_origNumGuessedFrames; }
const QVector<qint32> &frames() const { return m_frames; }
void setFrames(const QVector<qint32> &frames) { m_frames = frames; }
const QHash<qint32, QVariant> &traceData() const { return m_traceData; }
quint32 pid() const { return m_pid; }
quint32 tid() const { return m_tid; }
quint8 numGuessedFrames() const { return m_numGuessedFrames; }
void setNumGuessedFrames(quint8 numGuessedFrames) { m_numGuessedFrames = numGuessedFrames; }
quint8 feature() const { return m_feature; }
quint8 extra() const { return m_extra; }
void setExtra(quint8 extra) { m_extra = extra; }
private:
friend QDataStream &operator>>(QDataStream &stream, PerfEvent &event);
friend QDataStream &operator<<(QDataStream &stream, const PerfEvent &event);
QVector<QPair<qint32, quint64>> m_values;
QVector<qint32> m_origFrames;
QVector<qint32> m_frames;
QHash<qint32, QVariant> m_traceData;
quint32 m_pid = 0;
quint32 m_tid = 0;
quint64 m_value = 0;
quint32 m_cpu = 0;
quint8 m_origNumGuessedFrames = 0;
quint8 m_numGuessedFrames = 0;
quint8 m_feature = PerfEventType::InvalidFeature;
quint8 m_extra = 0;
};
inline QDataStream &operator>>(QDataStream &stream, PerfEvent &event)
{
stream >> event.m_feature;
switch (event.m_feature) {
case PerfEventType::Command:
case PerfEventType::LocationDefinition:
case PerfEventType::SymbolDefinition:
case PerfEventType::AttributesDefinition:
case PerfEventType::StringDefinition:
case PerfEventType::FeaturesDefinition:
case PerfEventType::Error:
case PerfEventType::Progress:
case PerfEventType::TracePointFormat:
return stream; // in fact type data. to be handled elsewhere
case PerfEventType::ThreadStart:
case PerfEventType::ThreadEnd:
case PerfEventType::LostDefinition:
case PerfEventType::Sample:
case PerfEventType::TracePointSample:
case PerfEventType::ContextSwitchDefinition:
break;
default:
qWarning() << "Unrecognized perf event feature" << event.m_feature;
return stream;
}
quint64 timestamp;
stream >> event.m_pid >> event.m_tid >> timestamp >> event.m_cpu;
static const quint64 qint64Max = static_cast<quint64>(std::numeric_limits<qint64>::max());
event.setTimestamp(static_cast<qint64>(qMin(timestamp, qint64Max)));
switch (event.m_feature) {
case PerfEventType::ThreadStart:
event.setTypeIndex(PerfEvent::ThreadStartTypeId);
break;
case PerfEventType::ThreadEnd:
event.setTypeIndex(PerfEvent::ThreadEndTypeId);
break;
case PerfEventType::LostDefinition:
event.setTypeIndex(PerfEvent::LostTypeId);
break;
case PerfEventType::ContextSwitchDefinition:
event.setTypeIndex(PerfEvent::ContextSwitchTypeId);
bool isSwitchOut;
stream >> isSwitchOut;
event.setExtra(isSwitchOut);
break;
default: {
qint32 firstAttributeId;
stream >> event.m_origFrames >> event.m_origNumGuessedFrames;
QVector<QPair<qint32, quint64>> values;
stream >> values;
if (values.isEmpty()) {
firstAttributeId = PerfEvent::LastSpecialTypeId;
} else {
firstAttributeId = PerfEvent::LastSpecialTypeId - values.first().first;
event.m_value = values.first().second;
for (auto it = values.constBegin() + 1, end = values.constEnd(); it != end; ++it) {
event.m_values.push_back({ PerfEvent::LastSpecialTypeId - it->first,
it->second });
}
}
if (event.m_feature == PerfEventType::TracePointSample)
stream >> event.m_traceData;
event.setTypeIndex(firstAttributeId);
}
}
return stream;
}
inline QDataStream &operator<<(QDataStream &stream, const PerfEvent &event)
{
quint8 feature = event.feature();
stream << feature << event.m_pid << event.m_tid
<< (event.timestamp() < 0ll ? 0ull : static_cast<quint64>(event.timestamp()))
<< event.m_cpu;
switch (feature) {
case PerfEventType::ThreadStart:
case PerfEventType::ThreadEnd:
case PerfEventType::LostDefinition:
break;
case PerfEventType::ContextSwitchDefinition:
stream << bool(event.extra());
break;
case PerfEventType::Sample:
case PerfEventType::TracePointSample: {
stream << event.m_origFrames << event.m_origNumGuessedFrames;
QVector<QPair<qint32, quint64>> values;
for (int i = 0, end = event.numAttributes(); i < end; ++i) {
values.push_back({ PerfEvent::LastSpecialTypeId - event.attributeId(i),
event.attributeValue(i) });
}
stream << values;
if (feature == PerfEventType::TracePointSample)
stream << event.m_traceData;
break;
}
default:
QTC_CHECK(false);
}
return stream;
}
} // namespace Internal
} // namespace PerfProfiler
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