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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.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 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 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.
**
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QV4PROFILING_H
#define QV4PROFILING_H
#include "qv4global_p.h"
#include "qv4engine_p.h"
#include "qv4function_p.h"
#include <QElapsedTimer>
QT_BEGIN_NAMESPACE
namespace QV4 {
namespace Profiling {
enum MemoryType {
HeapPage,
LargeItem,
SmallItem
};
struct FunctionCallProperties {
qint64 start;
qint64 end;
QString name;
QString file;
int line;
int column;
};
struct MemoryAllocationProperties {
qint64 timestamp;
qint64 size;
MemoryType type;
};
class FunctionCall {
public:
FunctionCall() : m_function(0), m_start(0), m_end(0)
{ Q_ASSERT_X(false, Q_FUNC_INFO, "Cannot construct a function call without function"); }
FunctionCall(Function *function, qint64 start, qint64 end) :
m_function(function), m_start(start), m_end(end)
{ m_function->compilationUnit->ref(); }
FunctionCall(const FunctionCall &other) :
m_function(other.m_function), m_start(other.m_start), m_end(other.m_end)
{ m_function->compilationUnit->ref(); }
~FunctionCall()
{ m_function->compilationUnit->deref(); }
FunctionCall &operator=(const FunctionCall &other) {
if (&other != this) {
if (m_function)
m_function->compilationUnit->deref();
m_function = other.m_function;
m_start = other.m_start;
m_end = other.m_end;
m_function->compilationUnit->ref();
}
return *this;
}
FunctionCallProperties resolve() const;
private:
Function *m_function;
qint64 m_start;
qint64 m_end;
};
#define Q_V4_PROFILE_ALLOC(engine, size, type)\
(engine->profiler && engine->profiler->enabled ?\
engine->profiler->trackAlloc(size, type) : size)
#define Q_V4_PROFILE_DEALLOC(engine, pointer, size, type) \
(engine->profiler && engine->profiler->enabled ?\
engine->profiler->trackDealloc(pointer, size, type) : pointer)
#define Q_V4_PROFILE(engine, ctx, function)\
((engine->profiler && engine->profiler->enabled) ?\
Profiling::FunctionCallProfiler::profileCall(engine->profiler, ctx, function) :\
function->code(ctx, function->codeData))
class Q_QML_EXPORT Profiler : public QObject {
Q_OBJECT
Q_DISABLE_COPY(Profiler)
public:
Profiler(QV4::ExecutionEngine *engine);
size_t trackAlloc(size_t size, MemoryType type)
{
MemoryAllocationProperties allocation = {m_timer.nsecsElapsed(), (qint64)size, type};
m_memory_data.append(allocation);
return size;
}
void *trackDealloc(void *pointer, size_t size, MemoryType type)
{
MemoryAllocationProperties allocation = {m_timer.nsecsElapsed(), -(qint64)size, type};
m_memory_data.append(allocation);
return pointer;
}
bool enabled;
public slots:
void stopProfiling();
void startProfiling();
void reportData();
void setTimer(const QElapsedTimer &timer) { m_timer = timer; }
signals:
void dataReady(const QList<QV4::Profiling::FunctionCallProperties> &,
const QList<QV4::Profiling::MemoryAllocationProperties> &);
private:
QV4::ExecutionEngine *m_engine;
QElapsedTimer m_timer;
QVector<FunctionCall> m_data;
QList<MemoryAllocationProperties> m_memory_data;
friend class FunctionCallProfiler;
};
class FunctionCallProfiler {
Q_DISABLE_COPY(FunctionCallProfiler)
public:
// It's enough to ref() the function in the destructor as it will probably not disappear while
// it's executing ...
FunctionCallProfiler(Profiler *profiler, Function *function) :
profiler(profiler), function(function), startTime(profiler->m_timer.nsecsElapsed())
{}
~FunctionCallProfiler()
{
profiler->m_data.append(FunctionCall(function, startTime, profiler->m_timer.nsecsElapsed()));
}
static ReturnedValue profileCall(Profiler *profiler, ExecutionContext *ctx, Function *function)
{
FunctionCallProfiler callProfiler(profiler, function);
return function->code(ctx, function->codeData);
}
Profiler *profiler;
Function *function;
qint64 startTime;
};
} // namespace Profiling
} // namespace QV4
Q_DECLARE_TYPEINFO(QV4::Profiling::MemoryAllocationProperties, Q_MOVABLE_TYPE);
Q_DECLARE_TYPEINFO(QV4::Profiling::FunctionCallProperties, Q_MOVABLE_TYPE);
Q_DECLARE_TYPEINFO(QV4::Profiling::FunctionCall, Q_MOVABLE_TYPE);
QT_END_NAMESPACE
Q_DECLARE_METATYPE(QList<QV4::Profiling::FunctionCallProperties>)
Q_DECLARE_METATYPE(QList<QV4::Profiling::MemoryAllocationProperties>)
#endif // QV4PROFILING_H
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