Function main

example/mutex.cpp:18–29

}

int main() {
    io_context ctx[10];
    for (int i = 0; i < 1000; ++i) {
        ctx[i % 10].co_spawn(add());
    }
    for (auto &c : ctx) {
        c.start();
    }

    ctx[0].join(); // never stop
    return 0;
}