82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
/*
|
|
* This file is part of the Colobot: Gold Edition source code
|
|
* Copyright (C) 2001-2023, Daniel Roux, EPSITEC SA & TerranovaTeam
|
|
* http://epsitec.ch; http://colobot.info; http://github.com/colobot
|
|
*
|
|
* 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, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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 http://gnu.org/licenses
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <condition_variable>
|
|
#include <functional>
|
|
#include <mutex>
|
|
#include <queue>
|
|
#include <string>
|
|
#include <thread>
|
|
|
|
/**
|
|
* \class CWorkerThread
|
|
* \brief Thread that runs functions, one at a time
|
|
*/
|
|
class CWorkerThread
|
|
{
|
|
public:
|
|
using ThreadFunctionPtr = std::function<void()>;
|
|
|
|
public:
|
|
CWorkerThread() : m_thread{&CWorkerThread::Run, this} {}
|
|
|
|
~CWorkerThread()
|
|
{
|
|
{
|
|
std::lock_guard<std::mutex> lock{m_mutex};
|
|
m_running = false;
|
|
m_cond.notify_one();
|
|
}
|
|
m_thread.join();
|
|
}
|
|
|
|
void Start(ThreadFunctionPtr&& func)
|
|
{
|
|
std::lock_guard<std::mutex> lock{m_mutex};
|
|
m_queue.push(func);
|
|
m_cond.notify_one();
|
|
}
|
|
|
|
CWorkerThread(const CWorkerThread&) = delete;
|
|
CWorkerThread& operator=(const CWorkerThread&) = delete;
|
|
|
|
private:
|
|
void Run()
|
|
{
|
|
auto lock = std::unique_lock<std::mutex>(m_mutex);
|
|
while (true)
|
|
{
|
|
m_cond.wait(lock, [&]() { return !m_running || !m_queue.empty(); });
|
|
if (!m_running) break;
|
|
|
|
ThreadFunctionPtr func = std::move(m_queue.front());
|
|
m_queue.pop();
|
|
func();
|
|
}
|
|
}
|
|
|
|
std::thread m_thread;
|
|
std::mutex m_mutex;
|
|
std::condition_variable m_cond;
|
|
bool m_running = true;
|
|
std::queue<ThreadFunctionPtr> m_queue;
|
|
};
|