--- libev/ev_poll.c	2008/04/09 22:33:55	1.22
+++ libev/ev_poll.c	2016/02/18 04:48:05	1.40
@@ -1,19 +1,19 @@
 /*
  * libev poll fd activity backend
  *
- * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
+ * Copyright (c) 2007,2008,2009,2010,2011 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
@@ -39,9 +39,12 @@
 
 #include <poll.h>
 
-void inline_size
+inline_size
+void
 pollidx_init (int *base, int count)
 {
+  /* consider using memset (.., -1, ...), which is practically guaranteed
+   * to work on all systems implementing poll */
   while (count--)
     *base++ = -1;
 }
@@ -86,8 +89,12 @@
 static void
 poll_poll (EV_P_ ev_tstamp timeout)
 {
-  int i;
-  int res = poll (polls, pollcnt, (int)ceil (timeout * 1000.));
+  struct pollfd *p;
+  int res;
+  
+  EV_RELEASE_CB;
+  res = poll (polls, pollcnt, timeout * 1e3);
+  EV_ACQUIRE_CB;
 
   if (expect_false (res < 0))
     {
@@ -96,27 +103,37 @@
       else if (errno == ENOMEM && !syserr_cb)
         fd_enomem (EV_A);
       else if (errno != EINTR)
-        syserr ("(libev) poll");
+        ev_syserr ("(libev) poll");
     }
-  else if (res > 0)
-    for (i = 0; i < pollcnt; ++i)
-      if (expect_false (polls [i].revents & POLLNVAL))
-        fd_kill (EV_A_ polls [i].fd);
-      else
-        fd_event (
-          EV_A_
-          polls [i].fd,
-          (polls [i].revents & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0)
-          | (polls [i].revents & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0)
-        );
+  else
+    for (p = polls; res; ++p)
+      {
+        assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt));
+
+        if (expect_false (p->revents)) /* this expect is debatable */
+          {
+            --res;
+
+            if (expect_false (p->revents & POLLNVAL))
+              fd_kill (EV_A_ p->fd);
+            else
+              fd_event (
+                EV_A_
+                p->fd,
+                (p->revents & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0)
+                | (p->revents & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0)
+              );
+          }
+      }
 }
 
-int inline_size
+inline_size
+int
 poll_init (EV_P_ int flags)
 {
-  backend_fudge  = 0.; /* posix says this is zero */
-  backend_modify = poll_modify;
-  backend_poll   = poll_poll;
+  backend_mintime = 1e-3;
+  backend_modify  = poll_modify;
+  backend_poll    = poll_poll;
 
   pollidxs = 0; pollidxmax = 0;
   polls    = 0; pollmax    = 0; pollcnt = 0;
@@ -124,7 +141,8 @@
   return EVBACKEND_POLL;
 }
 
-void inline_size
+inline_size
+void
 poll_destroy (EV_P)
 {
   ev_free (pollidxs);