Function kevent

adapter/syscall/ff_hook_syscall.c:2423–2608

}

int
kevent(int kq, const struct kevent *changelist, int nchanges,
    struct kevent *eventlist, int nevents,
    const struct timespec *timeout)
{
    int i;
    int maxevents = nevents;
    struct kevent *kev;

    DEBUG_LOG("kq:%d, nchanges:%d, nevents:%d\n", kq, nchanges, nevents);

    if (unlikely(inited == 0 && ff_adapter_init() < 0)) {
        errno = ENOSYS;
        return -1;
    }

    kq = restore_fstack_fd(kq);

    DEFINE_REQ_ARGS_STATIC(kevent);
    static __thread struct kevent *sh_changelist = NULL;
    static __thread int sh_changelist_len = 0;
    static __thread struct kevent *sh_eventlist = NULL;
    static __thread int sh_eventlist_len = 0;

    if (changelist != NULL && nchanges > 0) {
        if (sh_changelist == NULL || sh_changelist_len < nchanges) {
            if (sh_changelist) {
                share_mem_free(sh_changelist);
            }

            sh_changelist_len = nchanges;
            sh_changelist = share_mem_alloc(sizeof(struct kevent) * sh_changelist_len);
            if (sh_changelist == NULL) {
                RETURN_ERROR_NOFREE(ENOMEM);
            }
        }
        rte_memcpy(sh_changelist, changelist, sizeof(struct kevent) * nchanges);

        for(i = 0; i < nchanges; i++) {
            kev = (struct kevent *)&sh_changelist[i];
            switch (kev->filter) {
                case EVFILT_READ:
                case EVFILT_WRITE:
                case EVFILT_VNODE:
                    kev->ident = restore_fstack_fd(kev->ident);
                    break;
                default:
                    break;
            }
        }
        args->changelist = sh_changelist;
        args->nchanges = nchanges;
    } else {
        args->changelist = NULL;
        args->nchanges = 0;
    }

    if (eventlist != NULL && nevents > 0) {