static int
evport_del(struct event_base *base, int fd, short old, short events, void *p)
{
struct evport_data *evpd = base->evbase;
struct fd_info *fdi;
int i;
int associated = 1;
(void)p;
check_evportop(evpd);
if (evpd->ed_nevents < fd) {
return (-1);
}
for (i = 0; i < EVENTS_PER_GETN; ++i) {
if (evpd->ed_pending[i] == fd) {
associated = 0;
break;
}
}
fdi = &evpd->ed_fds[fd];
if (events & EV_READ)
fdi->fdi_what &= ~EV_READ;
if (events & EV_WRITE)
fdi->fdi_what &= ~EV_WRITE;
if (associated) {
if (!FDI_HAS_EVENTS(fdi) &&
port_dissociate(evpd->ed_port, PORT_SOURCE_FD, fd) == -1) {
/*
* Ignore EBADFD error the fd could have been closed
* before event_del() was called.
*/
if (errno != EBADFD) {
event_warn("port_dissociate");
return (-1);
}
} else {
if (FDI_HAS_EVENTS(fdi)) {
return (reassociate(evpd, fdi, fd));
}
}
} else {
if ((fdi->fdi_what & (EV_READ|EV_WRITE)) == 0) {
evpd->ed_pending[i] = -1;
}
}
return 0;
}
static int
evport_del(struct event_base *base, int fd, short old, short events, void *p)
{
struct evport_data *evpd = base->evbase;
struct fd_info *fdi = p;
int associated = ! fdi->pending_idx_plus_1;
check_evportop(evpd);
fdi->fdi_what &= ~(events &(EV_READ|EV_WRITE));
if (associated) {
if (!FDI_HAS_EVENTS(fdi) &&
port_dissociate(evpd->ed_port, PORT_SOURCE_FD, fd) == -1) {
/*
* Ignore EBADFD error the fd could have been closed
* before event_del() was called.
*/
if (errno != EBADFD) {
event_warn("port_dissociate");
return (-1);
}
} else {
if (FDI_HAS_EVENTS(fdi)) {
return (reassociate(evpd, fdi, fd));
}
}
} else {
if ((fdi->fdi_what & (EV_READ|EV_WRITE)) == 0) {
const int i = fdi->pending_idx_plus_1 - 1;
EVUTIL_ASSERT(evpd->ed_pending[i] == fd);
evpd->ed_pending[i] = -1;
fdi->pending_idx_plus_1 = 0;
}
}
return 0;
}
static int
evport_dispatch(struct event_base *base, struct timeval *tv)
{
int i, res;
struct evport_data *epdp = base->evbase;
port_event_t pevtlist[EVENTS_PER_GETN];
/*
* port_getn will block until it has at least nevents events. It will
* also return how many it's given us (which may be more than we asked
* for, as long as it's less than our maximum (EVENTS_PER_GETN)) in
* nevents.
*/
int nevents = 1;
/*
* We have to convert a struct timeval to a struct timespec
* (only difference is nanoseconds vs. microseconds). If no time-based
* events are active, we should wait for I/O (and tv == NULL).
*/
struct timespec ts;
struct timespec *ts_p = NULL;
if (tv != NULL) {
ts.tv_sec = tv->tv_sec;
ts.tv_nsec = tv->tv_usec * 1000;
ts_p = &ts;
}
/*
* Before doing anything else, we need to reassociate the events we hit
* last time which need reassociation. See comment at the end of the
* loop below.
*/
for (i = 0; i < EVENTS_PER_GETN; ++i) {
struct fd_info *fdi = NULL;
if (epdp->ed_pending[i] != -1) {
fdi = &(epdp->ed_fds[epdp->ed_pending[i]]);
}
if (fdi != NULL && FDI_HAS_EVENTS(fdi)) {
int fd = epdp->ed_pending[i];
reassociate(epdp, fdi, fd);
epdp->ed_pending[i] = -1;
}
}
EVBASE_RELEASE_LOCK(base, th_base_lock);
res = port_getn(epdp->ed_port, pevtlist, EVENTS_PER_GETN,
(unsigned int *) &nevents, ts_p);
EVBASE_ACQUIRE_LOCK(base, th_base_lock);
if (res == -1) {
if (errno == EINTR || errno == EAGAIN) {
return (0);
} else if (errno == ETIME) {
if (nevents == 0)
return (0);
} else {
event_warn("port_getn");
return (-1);
}
}
event_debug(("%s: port_getn reports %d events", __func__, nevents));
for (i = 0; i < nevents; ++i) {
struct fd_info *fdi;
port_event_t *pevt = &pevtlist[i];
int fd = (int) pevt->portev_object;
check_evportop(epdp);
check_event(pevt);
epdp->ed_pending[i] = fd;
/*
* Figure out what kind of event it was
* (because we have to pass this to the callback)
*/
res = 0;
if (pevt->portev_events & (POLLERR|POLLHUP)) {
res = EV_READ | EV_WRITE;
} else {
if (pevt->portev_events & POLLIN)
res |= EV_READ;
if (pevt->portev_events & POLLOUT)
res |= EV_WRITE;
}
/*
* Check for the error situations or a hangup situation
*/
if (pevt->portev_events & (POLLERR|POLLHUP|POLLNVAL))
res |= EV_READ|EV_WRITE;
EVUTIL_ASSERT(epdp->ed_nevents > fd);
fdi = &(epdp->ed_fds[fd]);
evmap_io_active(base, fd, res);
} /* end of all events gotten */
check_evportop(epdp);
return (0);
}
static int
evport_del (void *arg, struct event *ev)
{
struct evport_data *evpd = arg;
struct fd_info *fdi;
int i;
int associated = 1;
check_evportop (evpd);
/*
* Delegate, if it's not ours to handle
*/
if (ev->ev_events & EV_SIGNAL)
{
return (evsignal_del (ev) );
}
if (evpd->ed_nevents < ev->ev_fd)
{
return (-1);
}
for (i = 0; i < EVENTS_PER_GETN; ++i)
{
if (evpd->ed_pending[i] == ev->ev_fd)
{
associated = 0;
break;
}
}
fdi = &evpd->ed_fds[ev->ev_fd];
if (ev->ev_events & EV_READ)
fdi->fdi_revt = NULL;
if (ev->ev_events & EV_WRITE)
fdi->fdi_wevt = NULL;
if (associated)
{
if (!FDI_HAS_EVENTS (fdi) &&
port_dissociate (evpd->ed_port, PORT_SOURCE_FD,
ev->ev_fd) == -1)
{
/*
* Ignre EBADFD error the fd could have been closed
* before event_del() was called.
*/
if (errno != EBADFD)
{
event_warn ("port_dissociate");
return (-1);
}
}
else
{
if (FDI_HAS_EVENTS (fdi) )
{
return (reassociate (evpd, fdi, ev->ev_fd) );
}
}
}
else
{
if (fdi->fdi_revt == NULL && fdi->fdi_wevt == NULL)
{
evpd->ed_pending[i] = -1;
}
}
return 0;
}
static int
evport_dispatch (struct event_base *base, void *arg, struct timeval *tv)
{
int i, res;
struct evport_data *epdp = arg;
port_event_t pevtlist[EVENTS_PER_GETN];
/*
* port_getn will block until it has at least nevents events. It will
* also return how many it's given us (which may be more than we asked
* for, as long as it's less than our maximum (EVENTS_PER_GETN)) in
* nevents.
*/
int nevents = 1;
/*
* We have to convert a struct timeval to a struct timespec
* (only difference is nanoseconds vs. microseconds). If no time-based
* events are active, we should wait for I/O (and tv == NULL).
*/
struct timespec ts;
struct timespec *ts_p = NULL;
if (tv != NULL)
{
ts.tv_sec = tv->tv_sec;
ts.tv_nsec = tv->tv_usec * 1000;
ts_p = &ts;
}
/*
* Before doing anything else, we need to reassociate the events we hit
* last time which need reassociation. See comment at the end of the
* loop below.
*/
for (i = 0; i < EVENTS_PER_GETN; ++i)
{
struct fd_info *fdi = NULL;
if (epdp->ed_pending[i] != -1)
{
fdi = & (epdp->ed_fds[epdp->ed_pending[i]]);
}
if (fdi != NULL && FDI_HAS_EVENTS (fdi) )
{
int fd = FDI_HAS_READ (fdi) ? fdi->fdi_revt->ev_fd :
fdi->fdi_wevt->ev_fd;
reassociate (epdp, fdi, fd);
epdp->ed_pending[i] = -1;
}
}
if ( (res = port_getn (epdp->ed_port, pevtlist, EVENTS_PER_GETN,
(unsigned int *) & nevents, ts_p) ) == -1)
{
if (errno == EINTR || errno == EAGAIN)
{
evsignal_process (base);
return (0);
}
else if (errno == ETIME)
{
if (nevents == 0)
return (0);
}
else
{
event_warn ("port_getn");
return (-1);
}
}
else if (base->sig.evsignal_caught)
{
evsignal_process (base);
}
event_debug ( ("%s: port_getn reports %d events", __func__, nevents) );
for (i = 0; i < nevents; ++i)
{
struct event *ev;
struct fd_info *fdi;
port_event_t *pevt = &pevtlist[i];
int fd = (int) pevt->portev_object;
check_evportop (epdp);
check_event (pevt);
epdp->ed_pending[i] = fd;
/*
* Figure out what kind of event it was
* (because we have to pass this to the callback)
*/
res = 0;
if (pevt->portev_events & POLLIN)
res |= EV_READ;
if (pevt->portev_events & POLLOUT)
res |= EV_WRITE;
assert (epdp->ed_nevents > fd);
fdi = & (epdp->ed_fds[fd]);
/*
* We now check for each of the possible events (READ
* or WRITE). Then, we activate the event (which will
* cause its callback to be executed).
*/
if ( (res & EV_READ) && ( (ev = fdi->fdi_revt) != NULL) )
{
event_active (ev, res, 1);
}
if ( (res & EV_WRITE) && ( (ev = fdi->fdi_wevt) != NULL) )
{
event_active (ev, res, 1);
}
} /* end of all events gotten */
check_evportop (epdp);
return (0);
}
