int kqueue_iod_modify(struct npool *nsp, struct niod *iod, struct nevent *nse, int ev_set, int ev_clr) {
struct kevent kev[2];
int new_events, i;
struct kqueue_engine_info *kinfo = (struct kqueue_engine_info *)nsp->engine_data;
assert((ev_set & ev_clr) == 0);
assert(IOD_PROPGET(iod, IOD_REGISTERED));
new_events = iod->watched_events;
new_events |= ev_set;
new_events &= ~ev_clr;
if (new_events == iod->watched_events)
return 1; /* nothing to do */
i = 0;
if ((ev_set ^ ev_clr) & EV_READ) {
EV_SET(&kev[i], nsock_iod_get_sd(iod), EVFILT_READ, EV_SETFLAG(ev_set, EV_READ), 0, 0, (void *)iod);
i++;
}
if ((ev_set ^ ev_clr) & EV_WRITE) {
EV_SET(&kev[i], nsock_iod_get_sd(iod), EVFILT_WRITE, EV_SETFLAG(ev_set, EV_WRITE), 0, 0, (void *)iod);
i++;
}
if (i > 0 && kevent(kinfo->kqfd, kev, i, NULL, 0, NULL) < 0)
fatal("Unable to update events for IOD #%lu: %s", iod->id, strerror(errno));
iod->watched_events = new_events;
return 1;
}
int kqueue_iod_register(struct npool *nsp, struct niod *iod, struct nevent *nse, int ev) {
struct kqueue_engine_info *kinfo = (struct kqueue_engine_info *)nsp->engine_data;
assert(!IOD_PROPGET(iod, IOD_REGISTERED));
IOD_PROPSET(iod, IOD_REGISTERED);
iod->watched_events = EV_NONE;
kqueue_iod_modify(nsp, iod, nse, ev, EV_NONE);
if (nsock_iod_get_sd(iod) > kinfo->maxfd)
kinfo->maxfd = nsock_iod_get_sd(iod);
return 1;
}
int epoll_iod_register(struct npool *nsp, struct niod *iod, int ev) {
int sd;
struct epoll_event epev;
struct epoll_engine_info *einfo = (struct epoll_engine_info *)nsp->engine_data;
assert(!IOD_PROPGET(iod, IOD_REGISTERED));
iod->watched_events = ev;
memset(&epev, 0x00, sizeof(struct epoll_event));
epev.events = EPOLLET;
epev.data.ptr = (void *)iod;
if (ev & EV_READ)
epev.events |= EPOLL_R_FLAGS;
if (ev & EV_WRITE)
epev.events |= EPOLL_W_FLAGS;
if (ev & EV_EXCEPT)
epev.events |= EPOLL_X_FLAGS;
sd = nsock_iod_get_sd(iod);
if (epoll_ctl(einfo->epfd, EPOLL_CTL_ADD, sd, &epev) < 0)
fatal("Unable to register IOD #%lu: %s", iod->id, strerror(errno));
IOD_PROPSET(iod, IOD_REGISTERED);
return 1;
}
int poll_iod_modify(struct npool *nsp, struct niod *iod, struct nevent *nse, int ev_set, int ev_clr) {
int sd;
int new_events;
struct poll_engine_info *pinfo = (struct poll_engine_info *)nsp->engine_data;
assert((ev_set & ev_clr) == 0);
assert(IOD_PROPGET(iod, IOD_REGISTERED));
new_events = iod->watched_events;
new_events |= ev_set;
new_events &= ~ev_clr;
if (new_events == iod->watched_events)
return 1; /* nothing to do */
iod->watched_events = new_events;
sd = nsock_iod_get_sd(iod);
pinfo->events[sd].fd = sd;
pinfo->events[sd].events = 0;
/* regenerate the current set of events for this IOD */
if (iod->watched_events & EV_READ)
pinfo->events[sd].events |= POLL_R_FLAGS;
if (iod->watched_events & EV_WRITE)
pinfo->events[sd].events |= POLL_W_FLAGS;
#ifndef WIN32
if (iod->watched_events & EV_EXCEPT)
pinfo->events[sd].events |= POLL_X_FLAGS;
#endif
return 1;
}
int poll_iod_register(struct npool *nsp, struct niod *iod, struct nevent *nse, int ev) {
struct poll_engine_info *pinfo = (struct poll_engine_info *)nsp->engine_data;
int sd;
assert(!IOD_PROPGET(iod, IOD_REGISTERED));
iod->watched_events = ev;
sd = nsock_iod_get_sd(iod);
while (pinfo->capacity < sd + 1)
evlist_grow(pinfo);
pinfo->events[sd].fd = sd;
pinfo->events[sd].events = 0;
pinfo->events[sd].revents = 0;
pinfo->max_fd = MAX(pinfo->max_fd, sd);
if (ev & EV_READ)
pinfo->events[sd].events |= POLL_R_FLAGS;
if (ev & EV_WRITE)
pinfo->events[sd].events |= POLL_W_FLAGS;
#ifndef WIN32
if (ev & EV_EXCEPT)
pinfo->events[sd].events |= POLL_X_FLAGS;
#endif
IOD_PROPSET(iod, IOD_REGISTERED);
return 1;
}
int kqueue_iod_unregister(struct npool *nsp, struct niod *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, NULL, EV_NONE, EV_READ|EV_WRITE);
IOD_PROPCLR(iod, IOD_REGISTERED);
if (nsock_iod_get_sd(iod) == kinfo->maxfd)
kinfo->maxfd--;
}
iod->watched_events = EV_NONE;
return 1;
}
int epoll_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 epoll_engine_info *einfo = (struct epoll_engine_info *)nsp->engine_data;
int sd;
sd = nsock_iod_get_sd(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 = nsock_iod_get_sd(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;
}
int epoll_iod_modify(struct npool *nsp, struct niod *iod, int ev_set, int ev_clr) {
int sd;
struct epoll_event epev;
int new_events;
struct epoll_engine_info *einfo = (struct epoll_engine_info *)nsp->engine_data;
assert((ev_set & ev_clr) == 0);
assert(IOD_PROPGET(iod, IOD_REGISTERED));
memset(&epev, 0x00, sizeof(struct epoll_event));
epev.events = EPOLLET;
epev.data.ptr = (void *)iod;
new_events = iod->watched_events;
new_events |= ev_set;
new_events &= ~ev_clr;
if (new_events == iod->watched_events)
return 1; /* nothing to do */
iod->watched_events = new_events;
/* regenerate the current set of events for this IOD */
if (iod->watched_events & EV_READ)
epev.events |= EPOLL_R_FLAGS;
if (iod->watched_events & EV_WRITE)
epev.events |= EPOLL_W_FLAGS;
if (iod->watched_events & EV_EXCEPT)
epev.events |= EPOLL_X_FLAGS;
sd = nsock_iod_get_sd(iod);
if (epoll_ctl(einfo->epfd, EPOLL_CTL_MOD, sd, &epev) < 0)
fatal("Unable to update events for IOD #%lu: %s", iod->id, strerror(errno));
return 1;
}