Function ws_scan_runq

thread/thread.cpp:1979–1984

        return stolen.eject_whole();
    }
    inline __attribute__((always_inline))
    thread* ws_scan_runq(vcpu_t* v, vcpu_t* u) {
        if (!u->runq_lock.background_try_lock()) return 0;
        DEFER(u->runq_lock.background_unlock());
        return ws_scan_q(v, u->idle_worker, true);
    }
    static bool try_work_stealing(vcpu_t* vcpu) {
        assert(CURRENT->get_vcpu() == vcpu);
        assert(CURRENT == vcpu->idle_worker);