Function _make_vref

src/bthread/execution_queue_inl.h:224–227

    }

    static inline int64_t _make_vref(uint32_t version, int32_t ref) {
        // 1: Intended conversion to uint32_t, nref=-1 is 00000000FFFFFFFF
        return (((uint64_t)version) << 32) | (uint32_t/*1*/)ref;
    }

    // Don't change the order of _head, _versioned_ref and _stopped unless you 
    // see improvement of performance in test