Method do_elapsed_time_until

src/core/impl/comp_node/cpu/comp_node.cpp:1072–1076

======================== EventImpl ======================== */

/* ======================== EventImpl ========================  */
double CpuCompNode::CpuDispatchableBase::EventImpl::do_elapsed_time_until(
        EventImplHelper& end) {
    auto&& f1 = static_cast<EventImpl&>(end).m_prev_finish_time;
    return m_prev_finish_time.time_until_secs(f1);
}

#if MGB_HAVE_THREAD
void CpuCompNode::CpuDispatchableBase::EventImpl::do_device_wait_by(Impl* cn_impl) {