Method executeTask

launcher/minecraft/launch/DirectJavaLaunch.cpp:36–100

}

void DirectJavaLaunch::executeTask()
{
    auto instance = m_parent->instance();
    std::shared_ptr<MinecraftInstance> minecraftInstance = std::dynamic_pointer_cast<MinecraftInstance>(instance);
    QStringList args = minecraftInstance->javaArguments();

    args.append("-Djava.library.path=" + minecraftInstance->getNativePath());

    auto classPathEntries = minecraftInstance->getClassPath();
    args.append("-cp");
    QString classpath;
#ifdef Q_OS_WIN32
    classpath = classPathEntries.join(';');
#else
    classpath = classPathEntries.join(':');
#endif
    args.append(classpath);
    args.append(minecraftInstance->getMainClass());

    QString allArgs = args.join(", ");
    emit logLine("Java Arguments:\n[" + m_parent->censorPrivateInfo(allArgs) + "]\n\n", MessageLevel::Launcher);

    auto javaPath = FS::ResolveExecutable(instance->settings()->get("JavaPath").toString());

    m_process.setProcessEnvironment(instance->createLaunchEnvironment());

    // make detachable - this will keep the process running even if the object is destroyed
    m_process.setDetachable(true);

    auto mcArgs = minecraftInstance->processMinecraftArgs(m_session, m_serverToJoin);
    args.append(mcArgs);

    QString wrapperCommandStr = instance->getWrapperCommand().trimmed();
    if(!wrapperCommandStr.isEmpty())
    {
        auto wrapperArgs = Commandline::splitArgs(wrapperCommandStr);
        auto wrapperCommand = wrapperArgs.takeFirst();
        auto realWrapperCommand = QStandardPaths::findExecutable(wrapperCommand);
        if (realWrapperCommand.isEmpty())
        {
            const char *reason = QT_TR_NOOP("The wrapper command \"%1\" couldn't be found.");
            emit logLine(QString(reason).arg(wrapperCommand), MessageLevel::Fatal);
            emitFailed(tr(reason).arg(wrapperCommand));
            return;
        }
        emit logLine("Wrapper command is:\n" + wrapperCommandStr + "\n\n", MessageLevel::Launcher);
        args.prepend(javaPath);
        m_process.start(wrapperCommand, wrapperArgs + args);
    }
    else
    {
        m_process.start(javaPath, args);
    }

#ifdef Q_OS_LINUX
    if (instance->settings()->get("EnableFeralGamemode").toBool() && APPLICATION->capabilities() & Application::SupportsGameMode)
    {
        auto pid = m_process.processId();