--- libev/ev_kqueue.c	2008/10/29 06:32:48	1.35
+++ libev/ev_kqueue.c	2011/06/02 23:34:05	1.49
@@ -1,19 +1,19 @@
 /*
  * libev kqueue backend
  *
- * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
+ * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modifica-
  * tion, are permitted provided that the following conditions are met:
- * 
+ *
  *   1.  Redistributions of source code must retain the above copyright notice,
  *       this list of conditions and the following disclaimer.
- * 
+ *
  *   2.  Redistributions in binary form must reproduce the above copyright
  *       notice, this list of conditions and the following disclaimer in the
  *       documentation and/or other materials provided with the distribution.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
  * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
@@ -39,7 +39,6 @@
 
 #include <sys/types.h>
 #include <sys/time.h>
-#include <sys/queue.h>
 #include <sys/event.h>
 #include <string.h>
 #include <errno.h>
@@ -53,6 +52,10 @@
   EV_SET (&kqueue_changes [kqueue_changecnt - 1], fd, filter, flags, fflags, 0, 0);
 }
 
+/* OS X at least needs this */
+#ifndef EV_ENABLE
+# define EV_ENABLE 0
+#endif
 #ifndef NOTE_EOF
 # define NOTE_EOF 0
 #endif
@@ -73,10 +76,10 @@
   /* event requests even when oev == nev */
 
   if (nev & EV_READ)
-    kqueue_change (EV_A_ fd, EVFILT_READ , EV_ADD, NOTE_EOF);
+    kqueue_change (EV_A_ fd, EVFILT_READ , EV_ADD | EV_ENABLE, NOTE_EOF);
 
   if (nev & EV_WRITE)
-    kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_ADD, NOTE_EOF);
+    kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_ADD | EV_ENABLE, NOTE_EOF);
 }
 
 static void
@@ -93,18 +96,19 @@
       kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax);
     }
 
-  ts.tv_sec  = (time_t)timeout;
-  ts.tv_nsec = (long)((timeout - (ev_tstamp)ts.tv_sec) * 1e9);
+  EV_RELEASE_CB;
+  EV_TS_SET (ts, timeout);
   res = kevent (backend_fd, kqueue_changes, kqueue_changecnt, kqueue_events, kqueue_eventmax, &ts);
+  EV_ACQUIRE_CB;
   kqueue_changecnt = 0;
 
   if (expect_false (res < 0))
-    { 
+    {
       if (errno != EINTR)
         ev_syserr ("(libev) kevent");
 
       return;
-    } 
+    }
 
   for (i = 0; i < res; ++i)
     {
@@ -112,11 +116,11 @@
 
       if (expect_false (kqueue_events [i].flags & EV_ERROR))
         {
-	  int err = kqueue_events [i].data;
+          int err = kqueue_events [i].data;
 
           /* 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 */
@@ -128,7 +132,7 @@
                 }
               else /* on all other errors, we error out on the fd */
                 fd_kill (EV_A_ fd);
-	    }
+            }
         }
       else
         fd_event (
@@ -151,13 +155,13 @@
 int inline_size
 kqueue_init (EV_P_ int flags)
 {
-  /* Initalize the kernel queue */
+  /* Initialize the kernel queue */
   if ((backend_fd = kqueue ()) < 0)
     return 0;
 
   fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */
 
-  backend_fudge  = 0.;
+  backend_fudge  = 1e-9; /* apparently, they did the right thing in freebsd */
   backend_modify = kqueue_modify;
   backend_poll   = kqueue_poll;