forked from qt-creator/qt-creator
1de247c28a
Change-Id: Ic71b73f4a31d86d04e0c346a45b3506d07895ebc Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
494 lines
19 KiB
C++
494 lines
19 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd
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** All rights reserved.
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** For any questions to The Qt Company, please use contact form at http://www.qt.io/contact-us
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**
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** This file is part of the Qt Enterprise Qt Quick Profiler Add-on.
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**
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** Licensees holding valid Qt Enterprise licenses may use this file in
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** accordance with the Qt Enterprise License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://www.qt.io/contact-us
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**
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****************************************************************************/
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#include "pixmapcachemodel.h"
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#include "qmldebug/qmlprofilereventtypes.h"
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#include "qmlprofiler/qmlprofilermodelmanager.h"
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namespace QmlProfilerExtension {
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namespace Internal {
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using namespace QmlProfiler;
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PixmapCacheModel::PixmapCacheModel(QmlProfilerModelManager *manager, QObject *parent) :
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QmlProfilerTimelineModel(manager, QmlDebug::PixmapCacheEvent, QmlDebug::MaximumRangeType,
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QmlDebug::ProfilePixmapCache, parent)
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{
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m_maxCacheSize = 1;
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}
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int PixmapCacheModel::rowMaxValue(int rowNumber) const
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{
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if (rowNumber == 1) {
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return m_maxCacheSize;
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} else {
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return QmlProfilerTimelineModel::rowMaxValue(rowNumber);
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}
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}
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int PixmapCacheModel::expandedRow(int index) const
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{
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return selectionId(index) + 1;
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}
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int PixmapCacheModel::collapsedRow(int index) const
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{
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return m_data[index].rowNumberCollapsed;
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}
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int PixmapCacheModel::typeId(int index) const
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{
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return m_data[index].typeId;
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}
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QColor PixmapCacheModel::color(int index) const
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{
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if (m_data[index].pixmapEventType == PixmapCacheCountChanged)
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return colorByHue(s_pixmapCacheCountHue);
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return colorBySelectionId(index);
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}
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float PixmapCacheModel::relativeHeight(int index) const
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{
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if (m_data[index].pixmapEventType == PixmapCacheCountChanged)
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return (float)m_data[index].cacheSize / (float)m_maxCacheSize;
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else
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return 1.0f;
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}
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QString getFilenameOnly(QString absUrl)
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{
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int characterPos = absUrl.lastIndexOf(QLatin1Char('/'))+1;
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if (characterPos < absUrl.length())
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absUrl = absUrl.mid(characterPos);
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return absUrl;
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}
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QVariantList PixmapCacheModel::labels() const
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{
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QVariantList result;
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// Cache Size
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QVariantMap element;
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element.insert(QLatin1String("description"), QVariant(QLatin1String("Cache Size")));
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element.insert(QLatin1String("id"), QVariant(0));
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result << element;
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for (int i=0; i < m_pixmaps.count(); i++) {
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// Loading
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QVariantMap element;
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element.insert(QLatin1String("displayName"), m_pixmaps[i].url);
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element.insert(QLatin1String("description"),
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QVariant(getFilenameOnly(m_pixmaps[i].url)));
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element.insert(QLatin1String("id"), QVariant(i+1));
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result << element;
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}
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return result;
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}
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QVariantMap PixmapCacheModel::details(int index) const
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{
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QVariantMap result;
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const PixmapCacheEvent *ev = &m_data[index];
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if (ev->pixmapEventType == PixmapCacheCountChanged) {
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result.insert(QLatin1String("displayName"), tr("Image Cached"));
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} else {
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if (ev->pixmapEventType == PixmapLoadingStarted) {
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result.insert(QLatin1String("displayName"), tr("Image Loaded"));
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if (m_pixmaps[ev->urlIndex].sizes[ev->sizeIndex].loadState != Finished)
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result.insert(tr("Result"), tr("Load Error"));
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}
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result.insert(tr("Duration"), QmlProfilerDataModel::formatTime(duration(index)));
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}
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result.insert(tr("Cache Size"), QString::fromLatin1("%1 px").arg(ev->cacheSize));
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result.insert(tr("File"), getFilenameOnly(m_pixmaps[ev->urlIndex].url));
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result.insert(tr("Width"), QString::fromLatin1("%1 px")
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.arg(m_pixmaps[ev->urlIndex].sizes[ev->sizeIndex].size.width()));
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result.insert(tr("Height"), QString::fromLatin1("%1 px")
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.arg(m_pixmaps[ev->urlIndex].sizes[ev->sizeIndex].size.height()));
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return result;
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}
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/* Ultimately there is no way to know which cache entry a given event refers to as long as we only
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* receive the pixmap URL from the application. Multiple copies of different sizes may be cached
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* for each URL. However, we can apply some heuristics to make the result somewhat plausible by
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* using the following assumptions:
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*
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* - PixmapSizeKnown will happen at most once for every cache entry.
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* - PixmapSizeKnown cannot happen for entries with PixmapLoadingError and vice versa.
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* - PixmapCacheCountChanged can happen for entries with PixmapLoadingError but doesn't have to.
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* - Decreasing PixmapCacheCountChanged events can only happen for entries that have seen an
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* increasing PixmapCacheCountChanged (but that may have happened before the trace).
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* - PixmapCacheCountChanged can happen before or after PixmapSizeKnown.
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* - For every PixmapLoadingFinished or PixmapLoadingError there is exactly one
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* PixmapLoadingStarted event, but it may be before the trace.
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* - For every PixmapLoadingStarted there is exactly one PixmapLoadingFinished or
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* PixmapLoadingError, but it may be after the trace.
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* - Decreasing PixmapCacheCountChanged events in the presence of corrupt cache entries are more
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* likely to clear those entries than other, correctly loaded ones.
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* - Increasing PixmapCacheCountChanged events are more likely to refer to correctly loaded entries
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* than to ones with PixmapLoadingError.
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* - PixmapLoadingFinished and PixmapLoadingError are more likely to refer to cache entries that
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* have seen a PixmapLoadingStarted than to ones that haven't.
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*
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* For each URL we keep an ordered list of pixmaps possibly being loaded and assign new events to
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* the first entry that "fits". If multiple sizes of the same pixmap are being loaded concurrently
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* we generally assume that the PixmapLoadingFinished and PixmapLoadingError events occur in the
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* order we learn about the existence of these sizes, subject to the above constraints. This is not
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* necessarily the order the pixmaps are really loaded but it's the best we can do with the given
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* information. If they're loaded sequentially the representation is correct.
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*/
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void PixmapCacheModel::loadData()
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{
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QmlProfilerDataModel *simpleModel = modelManager()->qmlModel();
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if (simpleModel->isEmpty())
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return;
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int lastCacheSizeEvent = -1;
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int cumulatedCount = 0;
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const QVector<QmlProfilerDataModel::QmlEventTypeData> &types = simpleModel->getEventTypes();
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foreach (const QmlProfilerDataModel::QmlEventData &event, simpleModel->getEvents()) {
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const QmlProfilerDataModel::QmlEventTypeData &type = types[event.typeIndex];
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if (!accepted(type))
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continue;
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PixmapCacheEvent newEvent;
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newEvent.pixmapEventType = static_cast<PixmapEventType>(type.detailType);
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qint64 pixmapStartTime = event.startTime;
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newEvent.urlIndex = -1;
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for (QVector<Pixmap>::const_iterator it(m_pixmaps.cend()); it != m_pixmaps.cbegin();) {
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if ((--it)->url == type.location.filename) {
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newEvent.urlIndex = it - m_pixmaps.cbegin();
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break;
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}
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}
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newEvent.sizeIndex = -1;
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if (newEvent.urlIndex == -1) {
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newEvent.urlIndex = m_pixmaps.count();
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m_pixmaps << Pixmap(type.location.filename);
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}
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Pixmap &pixmap = m_pixmaps[newEvent.urlIndex];
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switch (newEvent.pixmapEventType) {
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case PixmapSizeKnown: {// pixmap size
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// Look for pixmaps for which we don't know the size, yet and which have actually been
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// loaded.
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for (QVector<PixmapState>::iterator i(pixmap.sizes.begin());
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i != pixmap.sizes.end(); ++i) {
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if (i->size.isValid() || i->cacheState == Uncacheable || i->cacheState == Corrupt)
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continue;
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// We can't have cached it before we knew the size
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Q_ASSERT(i->cacheState != Cached);
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i->size.setWidth(event.numericData1);
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i->size.setHeight(event.numericData2);
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newEvent.sizeIndex = i - pixmap.sizes.begin();
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break;
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}
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if (newEvent.sizeIndex == -1) {
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newEvent.sizeIndex = pixmap.sizes.length();
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pixmap.sizes << PixmapState(event.numericData1, event.numericData2);
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}
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PixmapState &state = pixmap.sizes[newEvent.sizeIndex];
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if (state.cacheState == ToBeCached) {
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lastCacheSizeEvent = updateCacheCount(lastCacheSizeEvent, pixmapStartTime,
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state.size.width() * state.size.height(), newEvent,
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event.typeIndex);
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state.cacheState = Cached;
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}
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break;
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}
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case PixmapCacheCountChanged: {// Cache Size Changed Event
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pixmapStartTime = event.startTime + 1; // delay 1 ns for proper sorting
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bool uncache = cumulatedCount > event.numericData3;
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cumulatedCount = event.numericData3;
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qint64 pixSize = 0;
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// First try to find a preferred pixmap, which either is Corrupt and will be uncached
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// or is uncached and will be cached.
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for (QVector<PixmapState>::iterator i(pixmap.sizes.begin());
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i != pixmap.sizes.end(); ++i) {
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if (uncache && i->cacheState == Corrupt) {
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newEvent.sizeIndex = i - pixmap.sizes.begin();
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i->cacheState = Uncacheable;
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break;
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} else if (!uncache && i->cacheState == Uncached) {
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newEvent.sizeIndex = i - pixmap.sizes.begin();
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if (i->size.isValid()) {
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pixSize = i->size.width() * i->size.height();
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i->cacheState = Cached;
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} else {
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i->cacheState = ToBeCached;
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}
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break;
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}
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}
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// If none found, check for cached or ToBeCached pixmaps that shall be uncached or
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// Error pixmaps that become corrupt cache entries. We also accept Initial to be
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// uncached as we may have missed the matching PixmapCacheCountChanged that cached it.
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if (newEvent.sizeIndex == -1) {
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for (QVector<PixmapState>::iterator i(pixmap.sizes.begin());
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i != pixmap.sizes.end(); ++i) {
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if (uncache && (i->cacheState == Cached || i->cacheState == ToBeCached ||
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i->cacheState == Uncached)) {
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newEvent.sizeIndex = i - pixmap.sizes.begin();
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if (i->size.isValid())
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pixSize = -i->size.width() * i->size.height();
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i->cacheState = Uncached;
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break;
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} else if (!uncache && i->cacheState == Uncacheable) {
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newEvent.sizeIndex = i - pixmap.sizes.begin();
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i->cacheState = Corrupt;
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break;
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}
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}
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}
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// If that does't work, create a new entry.
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if (newEvent.sizeIndex == -1) {
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newEvent.sizeIndex = pixmap.sizes.length();
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pixmap.sizes << PixmapState(uncache ? Uncached : ToBeCached);
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}
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lastCacheSizeEvent = updateCacheCount(lastCacheSizeEvent, pixmapStartTime, pixSize,
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newEvent, event.typeIndex);
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break;
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}
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case PixmapLoadingStarted: { // Load
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// Look for a pixmap that hasn't been started, yet. There may have been a refcount
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// event, which we ignore.
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for (QVector<PixmapState>::const_iterator i(pixmap.sizes.cbegin());
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i != pixmap.sizes.cend(); ++i) {
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if (i->loadState == Initial) {
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newEvent.sizeIndex = i - pixmap.sizes.cbegin();
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break;
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}
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}
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if (newEvent.sizeIndex == -1) {
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newEvent.sizeIndex = pixmap.sizes.length();
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pixmap.sizes << PixmapState();
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}
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PixmapState &state = pixmap.sizes[newEvent.sizeIndex];
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state.loadState = Loading;
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newEvent.typeId = event.typeIndex;
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state.started = insertStart(pixmapStartTime, newEvent.urlIndex + 1);
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m_data.insert(state.started, newEvent);
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break;
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}
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case PixmapLoadingFinished:
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case PixmapLoadingError: {
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// First try to find one that has already started
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for (QVector<PixmapState>::const_iterator i(pixmap.sizes.cbegin());
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i != pixmap.sizes.cend(); ++i) {
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if (i->loadState != Loading)
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continue;
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// Pixmaps with known size cannot be errors and vice versa
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if (newEvent.pixmapEventType == PixmapLoadingError && i->size.isValid())
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continue;
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newEvent.sizeIndex = i - pixmap.sizes.cbegin();
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break;
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}
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// If none was found use any other compatible one
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if (newEvent.sizeIndex == -1) {
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for (QVector<PixmapState>::const_iterator i(pixmap.sizes.cbegin());
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i != pixmap.sizes.cend(); ++i) {
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if (i->loadState != Initial)
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continue;
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// Pixmaps with known size cannot be errors and vice versa
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if (newEvent.pixmapEventType == PixmapLoadingError && i->size.isValid())
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continue;
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newEvent.sizeIndex = i - pixmap.sizes.cbegin();
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break;
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}
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}
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// If again none was found, create one.
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if (newEvent.sizeIndex == -1) {
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newEvent.sizeIndex = pixmap.sizes.length();
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pixmap.sizes << PixmapState();
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}
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PixmapState &state = pixmap.sizes[newEvent.sizeIndex];
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// If the pixmap loading wasn't started, start it at traceStartTime()
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if (state.loadState == Initial) {
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newEvent.pixmapEventType = PixmapLoadingStarted;
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newEvent.typeId = event.typeIndex;
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qint64 traceStart = modelManager()->traceTime()->startTime();
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state.started = insert(traceStart, pixmapStartTime - traceStart,
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newEvent.urlIndex + 1);
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m_data.insert(state.started, newEvent);
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// All other indices are wrong now as we've prepended. Fix them ...
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if (lastCacheSizeEvent >= state.started)
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++lastCacheSizeEvent;
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for (int pixmapIndex = 0; pixmapIndex < m_pixmaps.count(); ++pixmapIndex) {
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Pixmap &brokenPixmap = m_pixmaps[pixmapIndex];
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for (int sizeIndex = 0; sizeIndex < brokenPixmap.sizes.count(); ++sizeIndex) {
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PixmapState &brokenSize = brokenPixmap.sizes[sizeIndex];
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if ((pixmapIndex != newEvent.urlIndex || sizeIndex != newEvent.sizeIndex) &&
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brokenSize.started >= state.started) {
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++brokenSize.started;
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}
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}
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}
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}
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insertEnd(state.started, pixmapStartTime - startTime(state.started));
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if (newEvent.pixmapEventType == PixmapLoadingError) {
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state.loadState = Error;
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switch (state.cacheState) {
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case Uncached:
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state.cacheState = Uncacheable;
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break;
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case ToBeCached:
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state.cacheState = Corrupt;
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break;
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default:
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// Cached cannot happen as size would have to be known and Corrupt or
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// Uncacheable cannot happen as we only accept one finish or error event per
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// pixmap.
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Q_ASSERT(false);
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}
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} else {
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state.loadState = Finished;
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}
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break;
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}
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default:
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break;
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}
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updateProgress(count(), 2 * simpleModel->getEvents().count());
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}
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if (lastCacheSizeEvent != -1)
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insertEnd(lastCacheSizeEvent, modelManager()->traceTime()->endTime() -
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startTime(lastCacheSizeEvent));
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resizeUnfinishedLoads();
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computeMaxCacheSize();
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flattenLoads();
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computeNesting();
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updateProgress(1, 1);
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}
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void PixmapCacheModel::clear()
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{
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m_pixmaps.clear();
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m_maxCacheSize = 1;
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m_data.clear();
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QmlProfilerTimelineModel::clear();
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}
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void PixmapCacheModel::computeMaxCacheSize()
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{
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m_maxCacheSize = 1;
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foreach (const PixmapCacheModel::PixmapCacheEvent &event, m_data) {
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if (event.pixmapEventType == PixmapCacheModel::PixmapCacheCountChanged) {
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if (event.cacheSize > m_maxCacheSize)
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m_maxCacheSize = event.cacheSize;
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}
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}
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}
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void PixmapCacheModel::resizeUnfinishedLoads()
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{
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// all the "load start" events with duration 0 continue till the end of the trace
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for (int i = 0; i < count(); i++) {
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if (m_data[i].pixmapEventType == PixmapCacheModel::PixmapLoadingStarted &&
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duration(i) == 0) {
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insertEnd(i, modelManager()->traceTime()->endTime() - startTime(i));
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}
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}
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}
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void PixmapCacheModel::flattenLoads()
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{
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int collapsedRowCount = 0;
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// computes "compressed row"
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QVector <qint64> eventEndTimes;
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for (int i = 0; i < count(); i++) {
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PixmapCacheModel::PixmapCacheEvent &event = m_data[i];
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if (event.pixmapEventType == PixmapCacheModel::PixmapLoadingStarted) {
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event.rowNumberCollapsed = 0;
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while (eventEndTimes.count() > event.rowNumberCollapsed &&
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eventEndTimes[event.rowNumberCollapsed] > startTime(i))
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event.rowNumberCollapsed++;
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if (eventEndTimes.count() == event.rowNumberCollapsed)
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eventEndTimes << 0; // increase stack length, proper value added below
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eventEndTimes[event.rowNumberCollapsed] = endTime(i);
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// readjust to account for category empty row and bargraph
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event.rowNumberCollapsed += 2;
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}
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if (event.rowNumberCollapsed > collapsedRowCount)
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collapsedRowCount = event.rowNumberCollapsed;
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}
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// Starting from 0, count is maxIndex+1
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setCollapsedRowCount(collapsedRowCount + 1);
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setExpandedRowCount(m_pixmaps.count() + 2);
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}
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int PixmapCacheModel::updateCacheCount(int lastCacheSizeEvent,
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qint64 pixmapStartTime, qint64 pixSize, PixmapCacheEvent &newEvent, int typeId)
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{
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newEvent.pixmapEventType = PixmapCacheCountChanged;
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newEvent.rowNumberCollapsed = 1;
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qint64 prevSize = 0;
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if (lastCacheSizeEvent != -1) {
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prevSize = m_data[lastCacheSizeEvent].cacheSize;
|
|
insertEnd(lastCacheSizeEvent, pixmapStartTime - startTime(lastCacheSizeEvent));
|
|
}
|
|
|
|
newEvent.cacheSize = prevSize + pixSize;
|
|
newEvent.typeId = typeId;
|
|
int index = insertStart(pixmapStartTime, 0);
|
|
m_data.insert(index, newEvent);
|
|
return index;
|
|
}
|
|
|
|
|
|
} // namespace Internal
|
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} // namespace QmlProfilerExtension
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