mirror of
https://github.com/cocos/cocos-engine.git
synced 2026-09-08 00:29:28 +08:00
88 lines
3.2 KiB
C++
88 lines
3.2 KiB
C++
/****************************************************************************
|
|
Copyright (c) 2020-2022 Xiamen Yaji Software Co., Ltd.
|
|
|
|
http://www.cocos.com
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated engine source code (the "Software"), a limited,
|
|
worldwide, royalty-free, non-assignable, revocable and non-exclusive license
|
|
to use Cocos Creator solely to develop games on your target platforms. You shall
|
|
not use Cocos Creator software for developing other software or tools that's
|
|
used for developing games. You are not granted to publish, distribute,
|
|
sublicense, and/or sell copies of Cocos Creator.
|
|
|
|
The software or tools in this License Agreement are licensed, not sold.
|
|
Xiamen Yaji Software Co., Ltd. reserves all rights not expressly granted to you.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
****************************************************************************/
|
|
|
|
#pragma once
|
|
|
|
#include <atomic>
|
|
#include <cassert>
|
|
#include <cstdint>
|
|
#include <functional>
|
|
#include <future>
|
|
#include <list>
|
|
#include <queue>
|
|
#include <thread>
|
|
#include "Event.h"
|
|
#include "concurrentqueue/concurrentqueue.h"
|
|
|
|
namespace cc {
|
|
|
|
class ThreadPool final {
|
|
public:
|
|
using Task = std::function<void()>;
|
|
using TaskQueue = moodycamel::ConcurrentQueue<Task>;
|
|
|
|
static uint8_t const CPU_CORE_COUNT;
|
|
static uint8_t const MAX_THREAD_COUNT;
|
|
|
|
ThreadPool() = default;
|
|
~ThreadPool() = default;
|
|
ThreadPool(ThreadPool const &) = delete;
|
|
ThreadPool(ThreadPool &&) noexcept = delete;
|
|
ThreadPool &operator=(ThreadPool const &) = delete;
|
|
ThreadPool &operator=(ThreadPool &&) noexcept = delete;
|
|
|
|
template <typename Function, typename... Args>
|
|
auto dispatchTask(Function &&func, Args &&...args) -> std::future<decltype(func(std::forward<Args>(args)...))>;
|
|
void start();
|
|
void stop();
|
|
|
|
private:
|
|
using Event = ConditionVariable;
|
|
|
|
void addThread();
|
|
|
|
TaskQueue _tasks{};
|
|
std::list<std::thread> _workers{};
|
|
Event _event{};
|
|
std::atomic<bool> _running{false};
|
|
uint8_t _workerCount{MAX_THREAD_COUNT};
|
|
};
|
|
|
|
template <typename Function, typename... Args>
|
|
auto ThreadPool::dispatchTask(Function &&func, Args &&...args) -> std::future<decltype(func(std::forward<Args>(args)...))> {
|
|
assert(_running);
|
|
|
|
using ReturnType = decltype(func(std::forward<Args>(args)...));
|
|
auto task = std::make_shared<std::packaged_task<ReturnType()>>(std::bind(std::forward<Function>(func), std::forward<Args>(args)...));
|
|
bool const succeed = _tasks.enqueue([task]() {
|
|
(*task)();
|
|
});
|
|
assert(succeed);
|
|
_event.signal();
|
|
return task->get_future();
|
|
}
|
|
|
|
} // namespace cc
|