sneedmc/launcher/tasks/Task.cpp
flow 2d63c86022
feat: make Task a QRunnable
This makes it possible to run a task in another thread.

I added a variable to toggle debug prints because they seem to trigger
an assertion on Qt internals when the task in on another thread. Of
course, this isn't awesome, but can wait until we improve our logging.

Signed-off-by: flow <flowlnlnln@gmail.com>
2022-08-20 10:41:59 -03:00

197 lines
4.9 KiB
C++

// SPDX-License-Identifier: GPL-3.0-only
/*
* PolyMC - Minecraft Launcher
* Copyright (c) 2022 flowln <flowlnlnln@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright 2013-2021 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "Task.h"
#include <QDebug>
Task::Task(QObject *parent, bool show_debug) : QObject(parent), m_show_debug(show_debug)
{
setAutoDelete(false);
}
void Task::setStatus(const QString &new_status)
{
if(m_status != new_status)
{
m_status = new_status;
emit status(m_status);
}
}
void Task::setProgress(qint64 current, qint64 total)
{
m_progress = current;
m_progressTotal = total;
emit progress(m_progress, m_progressTotal);
}
void Task::start()
{
switch(m_state)
{
case State::Inactive:
{
if (m_show_debug)
qDebug() << "Task" << describe() << "starting for the first time";
break;
}
case State::AbortedByUser:
{
if (m_show_debug)
qDebug() << "Task" << describe() << "restarting for after being aborted by user";
break;
}
case State::Failed:
{
if (m_show_debug)
qDebug() << "Task" << describe() << "restarting for after failing at first";
break;
}
case State::Succeeded:
{
if (m_show_debug)
qDebug() << "Task" << describe() << "restarting for after succeeding at first";
break;
}
case State::Running:
{
if (m_show_debug)
qWarning() << "The launcher tried to start task" << describe() << "while it was already running!";
return;
}
}
// NOTE: only fall thorugh to here in end states
m_state = State::Running;
emit started();
executeTask();
}
void Task::emitFailed(QString reason)
{
// Don't fail twice.
if (!isRunning())
{
qCritical() << "Task" << describe() << "failed while not running!!!!: " << reason;
return;
}
m_state = State::Failed;
m_failReason = reason;
qCritical() << "Task" << describe() << "failed: " << reason;
emit failed(reason);
emit finished();
}
void Task::emitAborted()
{
// Don't abort twice.
if (!isRunning())
{
qCritical() << "Task" << describe() << "aborted while not running!!!!";
return;
}
m_state = State::AbortedByUser;
m_failReason = "Aborted.";
if (m_show_debug)
qDebug() << "Task" << describe() << "aborted.";
emit aborted();
emit finished();
}
void Task::emitSucceeded()
{
// Don't succeed twice.
if (!isRunning())
{
qCritical() << "Task" << describe() << "succeeded while not running!!!!";
return;
}
m_state = State::Succeeded;
if (m_show_debug)
qDebug() << "Task" << describe() << "succeeded";
emit succeeded();
emit finished();
}
QString Task::describe()
{
QString outStr;
QTextStream out(&outStr);
out << metaObject()->className() << QChar('(');
auto name = objectName();
if(name.isEmpty())
{
out << QString("0x%1").arg((quintptr)this, 0, 16);
}
else
{
out << name;
}
out << QChar(')');
out.flush();
return outStr;
}
bool Task::isRunning() const
{
return m_state == State::Running;
}
bool Task::isFinished() const
{
return m_state != State::Running && m_state != State::Inactive;
}
bool Task::wasSuccessful() const
{
return m_state == State::Succeeded;
}
QString Task::failReason() const
{
return m_failReason;
}
void Task::logWarning(const QString& line)
{
qWarning() << line;
m_Warnings.append(line);
}
QStringList Task::warnings() const
{
return m_Warnings;
}