#include <iostream>
#include <thread>
#include <boost/fiber/all.hpp>

class dctor {
public:
	dctor() {if(cnt_++==0)std::cout << "ctor" << std::endl;}
	dctor(const dctor&) {cnt_++;assert(cnt_!=1);}
	~dctor() noexcept {std::cout << "dtor "  << --cnt_ << std::endl;}

	static int cnt_;
};
int dctor::cnt_=0;

int main(int argc, char** argv)
{
	std::cout << "begin" << std::endl;
	dctor dc;
	std::thread([dc](){std::cout << "\tfiber" << std::endl;}).detach();
	std::thread([dc](){std::cout << "\tfiber" << std::endl;}).detach();
	boost::this_fiber::yield();
	std::cout << "ends with: " << dctor::cnt_ << std::endl;

	return 0;
}

begin
ctor
dtor 3
dtor 2
dtor 	fiber4
dtor 3

dtor 2
	fiber
dtor 1
ends with: 1
dtor 0