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This commit is contained in:
Marc Alexander Lehmann 2007-11-06 18:49:32 +00:00
parent 6d17e341d8
commit e54340417e
4 changed files with 55 additions and 29 deletions
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3
ev.h
View File

@ -158,9 +158,6 @@ struct ev_io
struct ev_signal
{
EV_WATCHER_LIST (ev_signal);
#if EV_MULTIPLICITY
struct ev_loop *loop;
#endif
int signum; /* ro */
};

68
ev_kqueue.c
View File

@ -56,21 +56,20 @@ kqueue_change (EV_P_ int fd, int filter, int flags, int fflags)
static void
kqueue_modify (EV_P_ int fd, int oev, int nev)
{
if ((oev ^ nev) & EV_READ)
{
if (nev & EV_READ)
kqueue_change (EV_A_ fd, EVFILT_READ, EV_ADD, NOTE_EOF);
else
kqueue_change (EV_A_ fd, EVFILT_READ, EV_DELETE, 0);
}
/* to detect close/reopen reliably, we have to remove and re-add */
/* event requests even when oev == nev */
if ((oev ^ nev) & EV_WRITE)
{
if (nev & EV_WRITE)
kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_ADD, NOTE_EOF);
else
kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_DELETE, 0);
}
if (oev & EV_READ)
kqueue_change (EV_A_ fd, EVFILT_READ, EV_DELETE, 0);
if (oev & EV_WRITE)
kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_DELETE, 0);
if (nev & EV_READ)
kqueue_change (EV_A_ fd, EVFILT_READ, EV_ADD, NOTE_EOF);
if (nev & EV_WRITE)
kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_ADD, NOTE_EOF);
}
static void
@ -79,6 +78,14 @@ kqueue_poll (EV_P_ ev_tstamp timeout)
int res, i;
struct timespec ts;
/* need to resize so there is enough space for errors */
if (kqueue_changecnt > kqueue_eventmax)
{
ev_free (kqueue_events);
kqueue_eventmax = array_roundsize (struct kevent, kqueue_changecnt);
kqueue_events = ev_malloc (sizeof (struct kevent) * kqueue_eventmax);
}
ts.tv_sec = (time_t)timeout;
ts.tv_nsec = (long)(timeout - (ev_tstamp)ts.tv_sec) * 1e9;
res = kevent (kqueue_fd, kqueue_changes, kqueue_changecnt, kqueue_events, kqueue_eventmax, &ts);
@ -94,27 +101,42 @@ kqueue_poll (EV_P_ ev_tstamp timeout)
for (i = 0; i < res; ++i)
{
int fd = kqueue_events [i].ident;
if (kqueue_events [i].flags & EV_ERROR)
{
int err = kqueue_events [i].data;
/*
* Error messages that can happen, when a delete fails.
* errors that may happen
* EBADF happens when the file discriptor has been
* closed,
* ENOENT when the file discriptor was closed and
* ENOENT when the file descriptor was closed and
* then reopened.
* EINVAL for some reasons not understood; EINVAL
* should not be returned ever; but FreeBSD does :-\
* An error is also indicated when a callback deletes
* an event we are still processing. In that case
* the data field is set to ENOENT.
*/
if (kqueue_events [i].data == EBADF)
fd_kill (EV_A_ kqueue_events [i].ident);
/* we are only interested in errors for fds that we are interested in :) */
if (anfds [fd].events)
{
if (err == ENOENT) /* resubmit changes on ENOENT */
kqueue_modify (EV_A_ fd, 0, anfds [fd].events);
else if (err == EBADF) /* on EBADF, we re-check the fd */
{
if (fd_valid (fd))
kqueue_modify (EV_A_ fd, 0, anfds [fd].events);
else
fd_kill (EV_A_ fd);
}
else /* on all other errors, we error out on the fd */
fd_kill (EV_A_ fd);
}
}
else
fd_event (
EV_A_
kqueue_events [i].ident,
fd,
kqueue_events [i].filter == EVFILT_READ ? EV_READ
: kqueue_events [i].filter == EVFILT_WRITE ? EV_WRITE
: 0
@ -124,7 +146,7 @@ kqueue_poll (EV_P_ ev_tstamp timeout)
if (expect_false (res == kqueue_eventmax))
{
ev_free (kqueue_events);
kqueue_eventmax = array_roundsize (kqueue_events, kqueue_eventmax << 1);
kqueue_eventmax = array_roundsize (struct kevent, kqueue_eventmax << 1);
kqueue_events = ev_malloc (sizeof (struct kevent) * kqueue_eventmax);
}
}

2
evdns.c
View File

@ -1,4 +1,4 @@
/* $Id: evdns.c,v 1.18 2007-11-06 17:20:42 root Exp $ */
/* $Id: evdns.c,v 1.19 2007-11-06 18:49:32 root Exp $ */
/* The original version of this module was written by Adam Langley; for
* a history of modifications, check out the subversion logs.

11
event.c
View File

@ -144,7 +144,12 @@ x_cb (struct event *ev, int revents)
static void
x_cb_sig (EV_P_ struct ev_signal *w, int revents)
{
x_cb ((struct event *)(((char *)w) - offsetof (struct event, iosig.sig)), revents);
struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.sig));
if (revents & EV_ERROR)
event_del (ev);
x_cb (ev, revents);
}
static void
@ -152,7 +157,9 @@ x_cb_io (EV_P_ struct ev_io *w, int revents)
{
struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io));
if (!(ev->ev_events & EV_PERSIST) && ev_is_active (w))
if (revents & EV_ERROR)
event_del (ev);
else if (!(ev->ev_events & EV_PERSIST) && ev_is_active (w))
ev_io_stop (EV_A_ w);
x_cb (ev, revents);