Method SetImpl

util/network/pollerimpl.h:223–267

    }

    inline void SetImpl(void* data, int fd, int what) {
        TEvent e;

        Zero(e);

        if (what & CONT_POLL_EDGE_TRIGGERED) {
            if (what & CONT_POLL_BACKLOG_EMPTY) {
                // When backlog is empty, edge-triggered does not need restart.
                return;
            }
            e.events |= EPOLLET;
        }

        if (what & CONT_POLL_ONE_SHOT) {
            e.events |= EPOLLONESHOT;
        }

        if (what & CONT_POLL_READ) {
            e.events |= EPOLLIN;
        }

        if (what & CONT_POLL_WRITE) {
            e.events |= EPOLLOUT;
        }

        if (what & CONT_POLL_RDHUP) {
            e.events |= EPOLLRDHUP;
        }

        e.data.ptr = data;

        if (what & CONT_POLL_MODIFY) {
            if (epoll_ctl(Fd_, EPOLL_CTL_MOD, fd, &e) == -1) {
                ythrow TSystemError() << "epoll modify failed (fd=" << fd << ", what=" << what << ")";
            }
        } else if (epoll_ctl(Fd_, EPOLL_CTL_ADD, fd, &e) == -1) {
            if (LastSystemError() != EEXIST) {
                ythrow TSystemError() << "epoll add failed (fd=" << fd << ", what=" << what << ")";
            }

            if (epoll_ctl(Fd_, EPOLL_CTL_MOD, fd, &e) == -1) {
                ythrow TSystemError() << "epoll modify failed (fd=" << fd << ", what=" << what << ")";
            }
        }
    }

    inline void Remove(int fd) noexcept {
        TEvent e;