s->flags |= VCL_SESSION_F_IS_VEP_SESSION;
vep_session->vep.next_sh = session_handle;
- if (event->events & EPOLLOUT)
- vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
-
- /* Generate EPOLLOUT if tx fifo not full */
- if ((event->events & EPOLLOUT) && (vcl_session_write_ready (s) > 0))
+ if ((event->events & EPOLLOUT))
{
- vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET,
- SESSION_IO_EVT_TX);
- add_evt = 1;
+ int write_ready = vcl_session_write_ready (s);
+
+ vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
+ if (write_ready > 0)
+ {
+ /* Generate EPOLLOUT if tx fifo not full */
+ vcl_epoll_ctl_add_unhandled_event (
+ wrk, s, event->events & EPOLLET, SESSION_IO_EVT_TX);
+ add_evt = 1;
+ }
+ else
+ {
+ vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF);
+ }
}
/* Generate EPOLLIN if rx fifo has data */
if ((event->events & EPOLLIN) && (vcl_session_read_ready (s) > 0))
goto done;
}
- if (event->events & EPOLLOUT)
- vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
- else
- vcl_session_del_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
-
- /* Generate EPOLLOUT if session write ready nd event was not on */
- if ((event->events & EPOLLOUT) && !(s->vep.ev.events & EPOLLOUT) &&
- (vcl_session_write_ready (s) > 0))
+ /* Generate EPOLLOUT if session write ready and event was not on */
+ if ((event->events & EPOLLOUT) && !(s->vep.ev.events & EPOLLOUT))
{
- vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET,
- SESSION_IO_EVT_TX);
+ /* Fifo size load acq synchronized with update store rel */
+ int write_ready = vcl_session_write_ready (s);
+
+ vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
+ if (write_ready > 0)
+ vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET,
+ SESSION_IO_EVT_TX);
+ else
+ /* Request deq ntf in case dequeue happened while updating flag */
+ vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF);
}
+ else if (!(event->events & EPOLLOUT))
+ vcl_session_del_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
+
/* Generate EPOLLIN if session read ready and event was not on */
if ((event->events & EPOLLIN) && !(s->vep.ev.events & EPOLLIN) &&
(vcl_session_read_ready (s) > 0))