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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of the Qt Build Suite.
**
** 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.
**
** In addition, 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.
**
****************************************************************************/
#include "benchmarker.h"
#include "exception.h"
#include "runsupport.h"
#include "valgrindrunner.h"
#include <QtConcurrent>
#include <iostream>
namespace qbsBenchmarker {
Benchmarker::Benchmarker(Activities activities, const QString &oldCommit, const QString &newCommit,
const QString &testProject, const QString &qbsRepo)
: m_activities(activities)
, m_oldCommit(oldCommit)
, m_newCommit(newCommit)
, m_testProject(testProject)
, m_qbsRepo(qbsRepo)
{
}
Benchmarker::~Benchmarker()
{
if (!m_commitToRestore.isEmpty()) {
try {
runProcess(QStringList() << "git" << "checkout" << m_commitToRestore, m_qbsRepo);
} catch (const Exception &e) {
qDebug("Failed to restore original commit %s: %s", qPrintable(m_commitToRestore),
qPrintable(e.description()));
}
}
}
void Benchmarker::benchmark()
{
rememberCurrentRepoState();
runProcess(QStringList() << "git" << "checkout" << m_oldCommit, m_qbsRepo);
const QString oldQbsBuildDir = m_baseOutputDir.path() + "/old-qbs-build";
std::cout << "Building from old repo state..." << std::endl;
buildQbs(oldQbsBuildDir);
runProcess(QStringList() << "git" << "checkout" << m_newCommit, m_qbsRepo);
const QString newQbsBuildDir = m_baseOutputDir.path() + "/new-qbs-build";
std::cout << "Building from new repo state..." << std::endl;
buildQbs(newQbsBuildDir);
std::cout << "Now running valgrind. This can take a while." << std::endl;
ValgrindRunner oldDataRetriever(m_activities, m_testProject, oldQbsBuildDir,
m_baseOutputDir.path() + "/old-stuff");
ValgrindRunner newDataRetriever(m_activities, m_testProject, newQbsBuildDir,
m_baseOutputDir.path() + "/new-stuff");
QFuture<void> oldFuture = QtConcurrent::run(&oldDataRetriever, &ValgrindRunner::run);
QFuture<void> newFuture = QtConcurrent::run(&newDataRetriever, &ValgrindRunner::run);
oldFuture.waitForFinished();
foreach (const ValgrindResult &valgrindResult, oldDataRetriever.results()) {
BenchmarkResult &benchmarkResult = m_results[valgrindResult.activity];
benchmarkResult.oldInstructionCount = valgrindResult.instructionCount;
benchmarkResult.oldPeakMemoryUsage = valgrindResult.peakMemoryUsage;
}
newFuture.waitForFinished();
foreach (const ValgrindResult &valgrindResult, newDataRetriever.results()) {
BenchmarkResult &benchmarkResult = m_results[valgrindResult.activity];
benchmarkResult.newInstructionCount = valgrindResult.instructionCount;
benchmarkResult.newPeakMemoryUsage = valgrindResult.peakMemoryUsage;
}
std::cout << "Done!" << std::endl;
}
void Benchmarker::rememberCurrentRepoState()
{
QByteArray commit;
runProcess(QStringList() << "git" << "describe" << "HEAD", m_qbsRepo, &commit);
m_commitToRestore = QString::fromLatin1(commit);
}
void Benchmarker::buildQbs(const QString &buildDir) const
{
if (!QDir::root().mkpath(buildDir))
throw Exception(QString::fromLatin1("Failed to create directory '%1'.").arg(buildDir));
runProcess(QStringList() << "qmake" << m_qbsRepo + "/qbs.pro", buildDir);
runProcess(QStringList() << "make" << "-s", buildDir);
}
} // namespace qbsBenchmarker
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