/* Iterate through all the event lists (such as connect_events, read_events,
* timer_events, etc) and take action for those that have completed (due to
* timeout, i/o, etc) */
void iterate_through_event_lists(mspool *nsp, int evcount) {
int n;
struct kqueue_engine_info *kinfo = (struct kqueue_engine_info *)nsp->engine_data;
msiod *nsi;
for (n = 0; n < evcount; n++) {
struct kevent *kev = &kinfo->events[n];
nsi = (msiod *)kev->udata;
/* process all the pending events for this IOD */
process_iod_events(nsp, nsi, get_evmask(nsi, kev));
IOD_PROPSET(nsi, IOD_PROCESSED);
}
for (n = 0; n < evcount; n++) {
struct kevent *kev = &kinfo->events[n];
nsi = (msiod *)kev->udata;
if (nsi->state == NSIOD_STATE_DELETED) {
if (IOD_PROPGET(nsi, IOD_PROCESSED)) {
IOD_PROPCLR(nsi, IOD_PROCESSED);
gh_list_remove(&nsp->active_iods, &nsi->nodeq);
gh_list_prepend(&nsp->free_iods, &nsi->nodeq);
}
}
}
/* iterate through timers and expired events */
process_expired_events(nsp);
}
int select_iod_unregister(mspool *nsp, msiod *iod) {
struct select_engine_info *sinfo = (struct select_engine_info *)nsp->engine_data;
iod->watched_events = EV_NONE;
/* some IODs can be unregistered here if they're associated to an event that was
* immediately completed */
if (IOD_PROPGET(iod, IOD_REGISTERED)) {
#if HAVE_PCAP
if (iod->pcap) {
int sd = ((mspcap *)iod->pcap)->pcap_desc;
if (sd >= 0) {
CHECKED_FD_CLR(sd, &sinfo->fds_master_r);
CHECKED_FD_CLR(sd, &sinfo->fds_results_r);
}
} else
#endif
{
CHECKED_FD_CLR(iod->sd, &sinfo->fds_master_r);
CHECKED_FD_CLR(iod->sd, &sinfo->fds_master_w);
CHECKED_FD_CLR(iod->sd, &sinfo->fds_master_x);
CHECKED_FD_CLR(iod->sd, &sinfo->fds_results_r);
CHECKED_FD_CLR(iod->sd, &sinfo->fds_results_w);
CHECKED_FD_CLR(iod->sd, &sinfo->fds_results_x);
}
if (sinfo->max_sd == iod->sd)
sinfo->max_sd--;
IOD_PROPCLR(iod, IOD_REGISTERED);
}
return 1;
}
/* Iterate through all the event lists (such as connect_events, read_events,
* timer_events, etc) and take action for those that have completed (due to
* timeout, i/o, etc) */
void iterate_through_event_lists(mspool *nsp, int evcount) {
int n;
struct kqueue_engine_info *kinfo = (struct kqueue_engine_info *)nsp->engine_data;
gh_list_elem *current, *next, *last, *timer_last;
msevent *nse;
msiod *nsi;
/* Clear it -- We will find the next event as we go through the list */
nsp->next_ev.tv_sec = 0;
last = GH_LIST_LAST_ELEM(&nsp->active_iods);
timer_last = GH_LIST_LAST_ELEM(&nsp->timer_events);
for (n = 0; n < evcount; n++) {
struct kevent *kev = &kinfo->events[n];
nsi = (msiod *)kev->udata;
/* process all the pending events for this IOD */
process_iod_events(nsp, nsi, get_evmask(nsi, kev));
IOD_PROPSET(nsi, IOD_PROCESSED);
}
current = GH_LIST_FIRST_ELEM(&nsp->active_iods);
/* cull timeouts amongst the non active IODs */
while (current != NULL && GH_LIST_ELEM_PREV(current) != last) {
msiod *nsi = (msiod *)GH_LIST_ELEM_DATA(current);
if (IOD_PROPGET(nsi, IOD_PROCESSED))
IOD_PROPCLR(nsi, IOD_PROCESSED);
else if (nsi->state != NSIOD_STATE_DELETED && nsi->events_pending)
process_iod_events(nsp, nsi, EV_NONE);
next = GH_LIST_ELEM_NEXT(current);
if (nsi->state == NSIOD_STATE_DELETED) {
gh_list_remove_elem(&nsp->active_iods, current);
gh_list_prepend(&nsp->free_iods, nsi);
}
current = next;
}
/* iterate through timers */
for (current = GH_LIST_FIRST_ELEM(&nsp->timer_events);
current != NULL && GH_LIST_ELEM_PREV(current) != timer_last; current = next) {
nse = (msevent *)GH_LIST_ELEM_DATA(current);
process_event(nsp, &nsp->timer_events, nse, EV_NONE);
next = GH_LIST_ELEM_NEXT(current);
if (nse->event_done)
gh_list_remove_elem(&nsp->timer_events, current);
}
}
int kqueue_iod_unregister(mspool *nsp, msiod *iod) {
struct kqueue_engine_info *kinfo = (struct kqueue_engine_info *)nsp->engine_data;
/* some IODs can be unregistered here if they're associated to an event that was
* immediately completed */
if (IOD_PROPGET(iod, IOD_REGISTERED)) {
kqueue_iod_modify(nsp, iod, EV_NONE, EV_READ|EV_WRITE);
IOD_PROPCLR(iod, IOD_REGISTERED);
if (nsi_getsd(iod) == kinfo->maxfd)
kinfo->maxfd--;
}
iod->watched_events = EV_NONE;
return 1;
}
int epoll_iod_unregister(mspool *nsp, msiod *iod) {
iod->watched_events = EV_NONE;
/* some IODs can be unregistered here if they're associated to an event that was
* immediately completed */
if (IOD_PROPGET(iod, IOD_REGISTERED)) {
struct epoll_engine_info *einfo = (struct epoll_engine_info *)nsp->engine_data;
int sd;
sd = nsi_getsd(iod);
epoll_ctl(einfo->epfd, EPOLL_CTL_DEL, sd, NULL);
IOD_PROPCLR(iod, IOD_REGISTERED);
}
return 1;
}
int poll_iod_unregister(struct npool *nsp, struct niod *iod) {
iod->watched_events = EV_NONE;
/* some IODs can be unregistered here if they're associated to an event that was
* immediately completed */
if (IOD_PROPGET(iod, IOD_REGISTERED)) {
struct poll_engine_info *pinfo = (struct poll_engine_info *)nsp->engine_data;
int sd;
sd = nsi_getsd(iod);
pinfo->events[sd].fd = -1;
pinfo->events[sd].events = 0;
pinfo->events[sd].revents = 0;
if (pinfo->max_fd == sd)
lower_max_fd(pinfo);
IOD_PROPCLR(iod, IOD_REGISTERED);
}
return 1;
}
