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/*
SPDX-FileCopyrightText: 2010 Andreas Pakulat <apaku@gmx.de>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "projectmodelperformancetest.h"
#include <QApplication>
#include <QDebug>
#include <QElapsedTimer>
#include <QGridLayout>
#include <QPushButton>
#include <QTimer>
#include <QTreeView>
#include <projectmodel.h>
#include <path.h>
#include <tests/testcore.h>
#include <tests/autotestshell.h>
#include <tests/testplugincontroller.h>
// Knobs to increase/decrease the amount of items being generated
#define SMALL_DEPTH 2
#define SMALL_WIDTH 10
#define BIG_DEPTH 3
#define BIG_WIDTH 10
#define INIT_WIDTH 10
#define INIT_DEPTH 3
using KDevelop::ProjectModel;
using KDevelop::ProjectFolderItem;
using KDevelop::ProjectBaseItem;
using KDevelop::ProjectFileItem;
using KDevelop::Path;
void generateChilds( ProjectBaseItem* parent, int count, int depth )
{
for( int i = 0; i < 10; i++ ) {
if( depth > 0 ) {
auto* item = new ProjectFolderItem( QStringLiteral( "f%1" ).arg( i ), parent );
generateChilds( item, count, depth - 1 );
} else {
new ProjectFileItem( QStringLiteral( "f%1" ).arg( i ), parent );
}
}
}
ProjectModelPerformanceTest::ProjectModelPerformanceTest(QWidget* parent )
: QWidget(parent)
{
auto * l = new QGridLayout( this );
setLayout( l );
view = new QTreeView( this );
// This is used so the treeview layout performance is not influencing the test
view->setUniformRowHeights( true );
auto* b = new QPushButton(QStringLiteral("Expand All"), this);
connect( b, &QPushButton::clicked, view, &QTreeView::expandAll );
l->addWidget( b, 0, 0 );
b = new QPushButton( QStringLiteral("Collapse All"), this );
connect( b, &QPushButton::clicked, view, &QTreeView::collapseAll );
l->addWidget( b, 0, 1 );
b = new QPushButton( QStringLiteral("Add Small Subtree"), this );
connect( b, &QPushButton::clicked, this, &ProjectModelPerformanceTest::addSmallTree );
l->addWidget( b, 0, 2 );
b = new QPushButton( QStringLiteral("Add Big Subtree"), this );
connect( b, &QPushButton::clicked, this, &ProjectModelPerformanceTest::addBigTree );
l->addWidget( b, 0, 3 );
b = new QPushButton( QStringLiteral("Add Big Subtree in Chunks"), this );
connect( b, &QPushButton::clicked, this, &ProjectModelPerformanceTest::addBigTreeDelayed );
l->addWidget( b, 0, 4 );
l->addWidget( view, 1, 0, 1, 6 );
}
void ProjectModelPerformanceTest::init()
{
QElapsedTimer timer;
timer.start();
KDevelop::AutoTestShell::init();
auto* core = new KDevelop::TestCore;
core->setPluginController(new KDevelop::TestPluginController(core));
core->initialize();
qDebug() << "init core" << timer.elapsed();
timer.start();
model = new KDevelop::ProjectModel( this );
qDebug() << "create model" << timer.elapsed();
timer.start();
for( int i = 0; i < INIT_WIDTH; i++ ) {
auto* item = new ProjectFolderItem( nullptr, Path( QUrl::fromLocalFile( QStringLiteral( "/f%1" ).arg( i ) ) ) );
generateChilds( item, INIT_WIDTH, INIT_DEPTH );
model->appendRow( item );
}
qDebug() << "init model" << timer.elapsed();
timer.start();
view->setModel( model );
qDebug() << "set model" << timer.elapsed();
timer.start();
}
ProjectModelPerformanceTest::~ProjectModelPerformanceTest()
{
KDevelop::TestCore::shutdown();
QApplication::quit();
}
void ProjectModelPerformanceTest::addBigTree()
{
QElapsedTimer timer;
timer.start();
for( int i = 0; i < BIG_WIDTH; i++ ) {
auto* item = new ProjectFolderItem( nullptr, Path( QUrl::fromLocalFile( QStringLiteral( "/f%1" ).arg( i ) ) ) );
generateChilds( item, BIG_WIDTH, BIG_DEPTH );
model->appendRow( item );
}
qDebug() << "addBigTree" << timer.elapsed();
}
void ProjectModelPerformanceTest::addBigTreeDelayed()
{
originalWidth = model->rowCount();
QTimer::singleShot( 0, this, &ProjectModelPerformanceTest::addItemDelayed );
}
void ProjectModelPerformanceTest::addItemDelayed()
{
QElapsedTimer timer;
timer.start();
ProjectBaseItem* parent = nullptr;
Path path;
if( !currentParent.isEmpty() ) {
parent = currentParent.top();
path = Path(parent->path(), QStringLiteral("f%1").arg(parent->rowCount()));
} else {
path = Path(QUrl::fromLocalFile(QStringLiteral("/f%1").arg(model->rowCount())));
}
ProjectBaseItem* item = nullptr;
if( currentParent.size() < BIG_DEPTH ) {
item = new ProjectFolderItem(nullptr, path, parent);
} else {
item = new ProjectFileItem( nullptr, path, parent );
}
if( currentParent.isEmpty() ) {
model->appendRow( item );
}
// Abort/Continue conditions are:
// Go one level deeper (by pushing item on stack) as long as we haven't reached the max depth or the max width
// else if we've reached the max width then pop, i.e go one level up
// else the next run will add a sibling to the just-generated item
if( currentParent.size() < BIG_DEPTH && ( currentParent.isEmpty() || currentParent.top()->rowCount() < BIG_WIDTH ) ) {
currentParent.push( item );
} else if( !currentParent.isEmpty() && currentParent.top()->rowCount() >= BIG_WIDTH ) {
currentParent.pop();
}
if( ( currentParent.isEmpty() && ( model->rowCount() - originalWidth ) < BIG_WIDTH ) || !currentParent.isEmpty() ) {
QTimer::singleShot( 0, this, &ProjectModelPerformanceTest::addItemDelayed );
}
qDebug() << "addBigTreeDelayed" << timer.elapsed();
}
void ProjectModelPerformanceTest::addSmallTree()
{
QElapsedTimer timer;
timer.start();
for( int i = 0; i < SMALL_WIDTH; i++ ) {
auto* item = new ProjectFolderItem( nullptr, Path(QUrl::fromLocalFile( QStringLiteral( "/f%1" ).arg( i ) )) );
generateChilds( item, SMALL_WIDTH, SMALL_DEPTH );
model->appendRow( item );
}
qDebug() << "addSmallTree" << timer.elapsed();
}
int main( int argc, char** argv )
{
QApplication a( argc, argv );
auto* w = new ProjectModelPerformanceTest;
w->show();
w->setAttribute(Qt::WA_DeleteOnClose);
QMetaObject::invokeMethod(w, "init");
return a.exec();
}
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