Function do_thread_usleep

thread/thread.cpp:1420–1426

#pragma GCC diagnostic pop

    __attribute__((noinline))
    static int do_thread_usleep(Timeout timeout, RunQ rq) {
        auto r = prepare_usleep(timeout, nullptr, rq);
        switch_context(r.from, r.to);
        assert(r.from->waitq == nullptr);
        return r.from->set_error_number();
    }
    static int do_shutdown_usleep(Timeout timeout, RunQ rq) {
        timeout.timeout_at_most(10 * 1000);
        int ret = do_thread_usleep(timeout, rq);