l3.cpp

#pragma once
#include <thread>
#include <future>
#include <iostream>
#include <functional>
class SuspendThread {
private:
	std::thread task;
	std::promise<void> Psuspend;
public:

	template<typename FN_, typename ... Arguments>
	SuspendThread(FN_ func, Arguments&& ... args)
	{
		std::function<void()> b = std::bind(func, std::forward<Arguments>(args)...);

		auto l = [this](std::function<void()> f)
		{
			auto fut = this->Psuspend.get_future();
			fut.wait();
			f();
		};

		std::thread it(l, b);
		task.swap(it);
	}

	~SuspendThread()
	{
		task.join();
	}
	void run()
	{
		Psuspend.set_value();
	}
};