avoid backend_modify call unless ev_io_set was used

[software/libev.git] / ev_kqueue.c

diff --git a/ev_kqueue.c b/ev_kqueue.c
index afd3f9c402d248e71218d89c88ba2d5e23cc23ac..149455d609fd2f1ad320257f2743aef51cf76291 100644 (file)
--- a/ev_kqueue.c
+++ b/ev_kqueue.c
@@ -83,7 +83,7 @@ kqueue_poll (EV_P_ ev_tstamp timeout)
   if (kqueue_changecnt > kqueue_eventmax)
     {
       ev_free (kqueue_events);
-      kqueue_eventmax = array_roundsize (struct kevent, kqueue_changecnt);
+      kqueue_eventmax = array_nextsize (sizeof (struct kevent), kqueue_eventmax, kqueue_changecnt);
       kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax);
     }
 
@@ -92,7 +92,7 @@ kqueue_poll (EV_P_ ev_tstamp timeout)
   res = kevent (backend_fd, kqueue_changes, kqueue_changecnt, kqueue_events, kqueue_eventmax, &ts);
   kqueue_changecnt = 0;
 
-  if (res < 0)
+  if (expect_false (res < 0))
     { 
       if (errno != EINTR)
         syserr ("(libev) kevent");
@@ -137,7 +137,7 @@ kqueue_poll (EV_P_ ev_tstamp timeout)
   if (expect_false (res == kqueue_eventmax))
     {
       ev_free (kqueue_events);
-      kqueue_eventmax = array_roundsize (struct kevent, kqueue_eventmax << 1);
+      kqueue_eventmax = array_nextsize (sizeof (struct kevent), kqueue_eventmax, kqueue_eventmax + 1);
       kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax);
     }
 }
@@ -153,8 +153,7 @@ kqueue_init (EV_P_ int flags)
 
   fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */
 
-  /* fudge *might* be zero from the documentation, but bsd docs are notoriously wrong */
-  backend_fudge  = 1e-3; /* needed to compensate for kevent returning early */
+  backend_fudge  = 0.;
   backend_modify = kqueue_modify;
   backend_poll   = kqueue_poll;