История изменений

#include <memory>
#include <atomic>
#include <thread>
#include <vector>
using namespace std;


struct ITC_mes {
	atomic_flag f;
	int data;
};
using arg_t = shared_ptr<ITC_mes>;

void thread_fn(arg_t a) {
	a->data = 5;
	a->f.test_and_set(memory_order_release);
}

int main() {
	vector<arg_t> mes{make_shared<ITC_mes>()};
	thread t(thread_fn, mes.back());
	t.detach();
	while (true) {
		if (mes[0]->f.test(memory_order_acquire))
			return mes[0]->data;
	}
}

#include <memory>
#include <atomic>
#include <thread>
#include <vector>
using namespace std;


struct ITC_mes {
	atomic_flag f;
	int data;
};
using arg_t = shared_ptr<ITC_mes>;

void thread_fn(arg_t a)
{
	a->data = 5;
	a->f.test_and_set(memory_order_release);
}

int main() {
	vector<arg_t> mes{make_shared<ITC_mes>()};
	thread t(thread_fn, mes.back());
	t.detach();
	while (true) {
		if (mes[0]->f.test(memory_order_acquire))
			return mes[0]->data;
	}
}