static void iv_fd_kqueue_poll(struct iv_state *st,
struct iv_list_head *active,
const struct timespec *abs)
{
struct kevent kev[UPLOAD_BATCH];
int num;
struct kevent batch[st->numfds ? 2 * st->numfds : 1];
struct timespec rel;
int ret;
int run_events;
int i;
iv_fd_kqueue_upload(st, kev, UPLOAD_BATCH, &num);
ret = kevent(st->u.kqueue.kqueue_fd, kev, num,
batch, ARRAY_SIZE(batch), to_relative(st, &rel, abs));
__iv_invalidate_now(st);
if (ret < 0) {
if (errno == EINTR)
return;
iv_fatal("iv_fd_kqueue_poll: got error %d[%s]", errno,
strerror(errno));
}
run_events = 0;
for (i = 0; i < ret; i++) {
struct iv_fd_ *fd;
if (batch[i].filter == EVFILT_USER) {
run_events = 1;
continue;
}
if (batch[i].flags & EV_ERROR) {
int err = batch[i].data;
int fd = batch[i].ident;
iv_fatal("iv_fd_kqueue_poll: got error %d[%s] "
"polling fd %d", err, strerror(err), fd);
}
fd = (void *)batch[i].udata;
if (batch[i].filter == EVFILT_READ) {
iv_fd_make_ready(active, fd, MASKIN);
} else if (batch[i].filter == EVFILT_WRITE) {
iv_fd_make_ready(active, fd, MASKOUT);
} else {
iv_fatal("iv_fd_kqueue_poll: got message from "
"filter %d", batch[i].filter);
}
}
if (run_events)
iv_event_run_pending_events();
}
static int iv_fd_port_poll(struct iv_state *st,
struct iv_list_head *active,
const struct timespec *abs)
{
struct timespec _rel;
struct timespec *rel;
int run_timers;
int run_events;
unsigned int nget;
port_event_t pe[PORTEV_NUM];
int ret;
int i;
iv_fd_port_upload(st);
rel = to_relative(st, &_rel, abs);
run_timers = 0;
if (rel != NULL && rel->tv_sec == 0 && rel->tv_nsec == 0)
run_timers = 1;
run_events = 0;
poll_more:
nget = 1;
/*
* If we get EINTR from port_getn(), no events are returned
* and nget will not have been updated, but if we get ETIME,
* events may be returned, and nget will be set to the number
* of events in the array, and we need to process those
* events as usual.
*/
ret = port_getn(st->u.port.port_fd, pe, PORTEV_NUM, &nget, rel);
__iv_invalidate_now(st);
if (ret < 0 && errno != ETIME) {
if (errno == EINTR)
return run_timers;
iv_fatal("iv_fd_port_poll: got error %d[%s]", errno,
strerror(errno));
}
if (ret < 0 && errno == ETIME)
run_timers = 1;
for (i = 0; i < nget; i++) {
int source;
source = pe[i].portev_source;
if (source == PORT_SOURCE_FD) {
int revents;
struct iv_fd_ *fd;
revents = pe[i].portev_events;
fd = pe[i].portev_user;
if (revents & (POLLIN | POLLERR | POLLHUP))
iv_fd_make_ready(active, fd, MASKIN);
if (revents & (POLLOUT | POLLERR | POLLHUP))
iv_fd_make_ready(active, fd, MASKOUT);
if (revents & (POLLERR | POLLHUP))
iv_fd_make_ready(active, fd, MASKERR);
fd->registered_bands = 0;
iv_list_del_init(&fd->list_notify);
if (fd->wanted_bands) {
iv_list_add_tail(&fd->list_notify,
&st->u.port.notify);
}
} else if (source == PORT_SOURCE_TIMER) {
run_timers = 1;
} else if (source == PORT_SOURCE_USER) {
run_events = 1;
} else {
iv_fatal("iv_fd_port_poll: received event "
"from unknown source %d", source);
}
}
if (nget == PORTEV_NUM) {
run_timers = 1;
rel = &_rel;
rel->tv_sec = 0;
rel->tv_nsec = 0;
goto poll_more;
}
if (run_events)
iv_event_run_pending_events();
return run_timers;
}