APR_DECLARE(apr_status_t) apr_pollset_poll(apr_pollset_t *pollset,
apr_interval_time_t timeout,
apr_int32_t *num,
const apr_pollfd_t **descriptors)
{
apr_os_sock_t fd;
int ret, i;
unsigned int nget;
pfd_elem_t *ep;
struct timespec tv, *tvptr;
apr_status_t rv = APR_SUCCESS;
if (timeout < 0) {
tvptr = NULL;
}
else {
tv.tv_sec = (long) apr_time_sec(timeout);
tv.tv_nsec = (long) apr_time_usec(timeout) * 1000;
tvptr = &tv;
}
nget = 1;
pollset_lock_rings();
while (!APR_RING_EMPTY(&(pollset->add_ring), pfd_elem_t, link)) {
ep = APR_RING_FIRST(&(pollset->add_ring));
APR_RING_REMOVE(ep, link);
if (ep->pfd.desc_type == APR_POLL_SOCKET) {
fd = ep->pfd.desc.s->socketdes;
}
else {
fd = ep->pfd.desc.f->filedes;
}
port_associate(pollset->port_fd, PORT_SOURCE_FD,
fd, get_event(ep->pfd.reqevents), ep);
APR_RING_INSERT_TAIL(&(pollset->query_ring), ep, pfd_elem_t, link);
}
pollset_unlock_rings();
ret = port_getn(pollset->port_fd, pollset->port_set, pollset->nalloc,
&nget, tvptr);
(*num) = nget;
if (ret == -1) {
(*num) = 0;
if (errno == ETIME || errno == EINTR) {
rv = APR_TIMEUP;
}
else {
rv = APR_EGENERAL;
}
}
else if (nget == 0) {
rv = APR_TIMEUP;
}
else {
pollset_lock_rings();
for (i = 0; i < nget; i++) {
pollset->result_set[i] =
(((pfd_elem_t*)(pollset->port_set[i].portev_user))->pfd);
pollset->result_set[i].rtnevents =
get_revent(pollset->port_set[i].portev_events);
APR_RING_REMOVE((pfd_elem_t*)pollset->port_set[i].portev_user, link);
APR_RING_INSERT_TAIL(&(pollset->add_ring),
(pfd_elem_t*)pollset->port_set[i].portev_user,
pfd_elem_t, link);
}
pollset_unlock_rings();
if (descriptors) {
*descriptors = pollset->result_set;
}
}
pollset_lock_rings();
/* Shift all PFDs in the Dead Ring to be Free Ring */
APR_RING_CONCAT(&(pollset->free_ring), &(pollset->dead_ring), pfd_elem_t, link);
pollset_unlock_rings();
return rv;
}
static apr_status_t impl_pollset_poll(apr_pollset_t *pollset,
apr_interval_time_t timeout,
apr_int32_t *num,
const apr_pollfd_t **descriptors)
{
int ret, i, j;
apr_status_t rv = APR_SUCCESS;
apr_pollfd_t *fdptr;
if (timeout > 0) {
timeout /= 1000;
}
ret = epoll_wait(pollset->p->epoll_fd, pollset->p->pollset, pollset->nalloc,
timeout);
(*num) = ret;
if (ret < 0) {
rv = apr_get_netos_error();
}
else if (ret == 0) {
rv = APR_TIMEUP;
}
else {
for (i = 0, j = 0; i < ret; i++) {
if (pollset->flags & APR_POLLSET_NOCOPY) {
fdptr = (apr_pollfd_t *)(pollset->p->pollset[i].data.ptr);
}
else {
fdptr = &(((pfd_elem_t *) (pollset->p->pollset[i].data.ptr))->pfd);
}
/* Check if the polled descriptor is our
* wakeup pipe. In that case do not put it result set.
*/
if ((pollset->flags & APR_POLLSET_WAKEABLE) &&
fdptr->desc_type == APR_POLL_FILE &&
fdptr->desc.f == pollset->wakeup_pipe[0]) {
apr_pollset_drain_wakeup_pipe(pollset);
rv = APR_EINTR;
}
else {
pollset->p->result_set[j] = *fdptr;
pollset->p->result_set[j].rtnevents =
get_epoll_revent(pollset->p->pollset[i].events);
j++;
}
}
if (((*num) = j)) { /* any event besides wakeup pipe? */
rv = APR_SUCCESS;
if (descriptors) {
*descriptors = pollset->p->result_set;
}
}
}
if (!(pollset->flags & APR_POLLSET_NOCOPY)) {
pollset_lock_rings();
/* Shift all PFDs in the Dead Ring to the Free Ring */
APR_RING_CONCAT(&(pollset->p->free_ring), &(pollset->p->dead_ring), pfd_elem_t, link);
pollset_unlock_rings();
}
return rv;
}
static apr_status_t impl_pollset_poll(apr_pollset_t *pollset,
apr_interval_time_t timeout,
apr_int32_t *num,
const apr_pollfd_t **descriptors)
{
int ret, i, j;
struct timespec tv, *tvptr;
apr_status_t rv = APR_SUCCESS;
apr_pollfd_t fd;
if (timeout < 0) {
tvptr = NULL;
}
else {
tv.tv_sec = (long) apr_time_sec(timeout);
tv.tv_nsec = (long) apr_time_usec(timeout) * 1000;
tvptr = &tv;
}
ret = kevent(pollset->p->kqueue_fd, NULL, 0, pollset->p->ke_set,
pollset->p->setsize, tvptr);
(*num) = ret;
if (ret < 0) {
rv = apr_get_netos_error();
}
else if (ret == 0) {
rv = APR_TIMEUP;
}
else {
for (i = 0, j = 0; i < ret; i++) {
fd = (((pfd_elem_t*)(pollset->p->ke_set[i].udata))->pfd);
if ((pollset->flags & APR_POLLSET_WAKEABLE) &&
fd.desc_type == APR_POLL_FILE &&
fd.desc.f == pollset->wakeup_pipe[0]) {
apr_pollset_drain_wakeup_pipe(pollset);
rv = APR_EINTR;
}
else {
pollset->p->result_set[j] = fd;
pollset->p->result_set[j].rtnevents =
get_kqueue_revent(pollset->p->ke_set[i].filter,
pollset->p->ke_set[i].flags);
j++;
}
}
if ((*num = j)) { /* any event besides wakeup pipe? */
rv = APR_SUCCESS;
if (descriptors) {
*descriptors = pollset->p->result_set;
}
}
}
pollset_lock_rings();
/* Shift all PFDs in the Dead Ring to the Free Ring */
APR_RING_CONCAT(&(pollset->p->free_ring), &(pollset->p->dead_ring),
pfd_elem_t, link);
pollset_unlock_rings();
return rv;
}
static apr_status_t impl_pollset_poll(apr_pollset_t *pollset,
apr_interval_time_t timeout,
apr_int32_t *num,
const apr_pollfd_t **descriptors)
{
apr_os_sock_t fd;
int ret, i, j;
unsigned int nget;
pfd_elem_t *ep;
apr_status_t rv = APR_SUCCESS;
apr_pollfd_t fp;
nget = 1;
pollset_lock_rings();
apr_atomic_inc32(&pollset->p->waiting);
while (!APR_RING_EMPTY(&(pollset->p->add_ring), pfd_elem_t, link)) {
ep = APR_RING_FIRST(&(pollset->p->add_ring));
APR_RING_REMOVE(ep, link);
if (ep->pfd.desc_type == APR_POLL_SOCKET) {
fd = ep->pfd.desc.s->socketdes;
}
else {
fd = ep->pfd.desc.f->filedes;
}
ret = port_associate(pollset->p->port_fd, PORT_SOURCE_FD,
fd, get_event(ep->pfd.reqevents), ep);
if (ret < 0) {
rv = apr_get_netos_error();
APR_RING_INSERT_TAIL(&(pollset->p->free_ring), ep, pfd_elem_t, link);
break;
}
ep->on_query_ring = 1;
APR_RING_INSERT_TAIL(&(pollset->p->query_ring), ep, pfd_elem_t, link);
}
pollset_unlock_rings();
if (rv != APR_SUCCESS) {
apr_atomic_dec32(&pollset->p->waiting);
return rv;
}
rv = call_port_getn(pollset->p->port_fd, pollset->p->port_set,
pollset->nalloc, &nget, timeout);
/* decrease the waiting ASAP to reduce the window for calling
port_associate within apr_pollset_add() */
apr_atomic_dec32(&pollset->p->waiting);
(*num) = nget;
if (nget) {
pollset_lock_rings();
for (i = 0, j = 0; i < nget; i++) {
fp = (((pfd_elem_t*)(pollset->p->port_set[i].portev_user))->pfd);
if ((pollset->flags & APR_POLLSET_WAKEABLE) &&
fp.desc_type == APR_POLL_FILE &&
fp.desc.f == pollset->wakeup_pipe[0]) {
apr_pollset_drain_wakeup_pipe(pollset);
rv = APR_EINTR;
}
else {
pollset->p->result_set[j] = fp;
pollset->p->result_set[j].rtnevents =
get_revent(pollset->p->port_set[i].portev_events);
/* If the ring element is still on the query ring, move it
* to the add ring for re-association with the event port
* later. (It may have already been moved to the dead ring
* by a call to pollset_remove on another thread.)
*/
ep = (pfd_elem_t *)pollset->p->port_set[i].portev_user;
if (ep->on_query_ring) {
APR_RING_REMOVE(ep, link);
ep->on_query_ring = 0;
APR_RING_INSERT_TAIL(&(pollset->p->add_ring), ep,
pfd_elem_t, link);
}
j++;
}
}
pollset_unlock_rings();
if ((*num = j)) { /* any event besides wakeup pipe? */
rv = APR_SUCCESS;
if (descriptors) {
*descriptors = pollset->p->result_set;
}
}
}
pollset_lock_rings();
/* Shift all PFDs in the Dead Ring to the Free Ring */
APR_RING_CONCAT(&(pollset->p->free_ring), &(pollset->p->dead_ring), pfd_elem_t, link);
pollset_unlock_rings();
return rv;
}