diff options
Diffstat (limited to 'src/plugins/qmltooling/qmldbg_profiler/qv4profileradapter.cpp')
| -rw-r--r-- | src/plugins/qmltooling/qmldbg_profiler/qv4profileradapter.cpp | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/plugins/qmltooling/qmldbg_profiler/qv4profileradapter.cpp b/src/plugins/qmltooling/qmldbg_profiler/qv4profileradapter.cpp new file mode 100644 index 0000000000..24e01f4c68 --- /dev/null +++ b/src/plugins/qmltooling/qmldbg_profiler/qv4profileradapter.cpp @@ -0,0 +1,153 @@ +/**************************************************************************** +** +** 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 |