Method update

launcher/minecraft/mod/ResourceFolderModel.cpp:223–254

static QMutex s_update_task_mutex;
bool ResourceFolderModel::update()
{
    // We hold a lock here to prevent race conditions on the m_current_update_task reset.
    QMutexLocker lock(&s_update_task_mutex);

    // Already updating, so we schedule a future update and return.
    if (m_current_update_task) {
        m_scheduled_update = true;
        return false;
    }

    m_current_update_task.reset(createUpdateTask());
    if (!m_current_update_task)
        return false;

    connect(m_current_update_task.get(), &Task::succeeded, this, &ResourceFolderModel::onUpdateSucceeded,
            Qt::ConnectionType::QueuedConnection);
    connect(m_current_update_task.get(), &Task::failed, this, &ResourceFolderModel::onUpdateFailed, Qt::ConnectionType::QueuedConnection);
    connect(m_current_update_task.get(), &Task::finished, this, [=] {
        m_current_update_task.reset();
        if (m_scheduled_update) {
            m_scheduled_update = false;
            update();
        } else {
            emit updateFinished();
        }
    }, Qt::ConnectionType::QueuedConnection);

    QThreadPool::globalInstance()->start(m_current_update_task.get());

    return true;
}

void ResourceFolderModel::resolveResource(Resource* res)
{