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*** empty log message ***

master
Marc Alexander Lehmann 11 years ago
parent
commit
743eb19848
  1. 19
      ev_epoll.c

19
ev_epoll.c

@ -170,8 +170,12 @@ epoll_poll (EV_P_ ev_tstamp timeout)
int got = (ev->events & (EPOLLOUT | EPOLLERR | EPOLLHUP) ? EV_WRITE : 0)
| (ev->events & (EPOLLIN | EPOLLERR | EPOLLHUP) ? EV_READ : 0);
/* check for spurious notification */
/* we assume that fd is always in range, as we never shrink the anfds array */
/*
* check for spurious notification.
* this only finds spurious notifications on egen updates
* other spurious notifications will be found by epoll_ctl, below
* we assume that fd is always in range, as we never shrink the anfds array
*/
if (expect_false ((uint32_t)anfds [fd].egen != (uint32_t)(ev->data.u64 >> 32)))
{
/* recreate kernel state */
@ -183,8 +187,15 @@ epoll_poll (EV_P_ ev_tstamp timeout)
{
anfds [fd].emask = want;
/* we received an event but are not interested in it, try mod or del */
/* I don't think we ever need MOD, but let's handle it anyways */
/*
* we received an event but are not interested in it, try mod or del
* this often happens because we optimistically do not unregister fds
* when we are no longer interested in them, but also when we get spurious
* notifications for fds from another process. this is partially handled
* above with the gencounter check (== our fd is not the event fd), and
* partially here, when epoll_ctl returns an error (== a child has the fd
* but we closed it).
*/
ev->events = (want & EV_READ ? EPOLLIN : 0)
| (want & EV_WRITE ? EPOLLOUT : 0);

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