X-Git-Url: https://git.llucax.com/software/libev.git/blobdiff_plain/590184764c24027d601abb040776a5b5f7314dd5..c56a8061de2b5b4b9760ed49d4600bf40991b797:/ev.c?ds=inline

diff --git a/ev.c b/ev.c
index c9ff2f1..1d0a5bf 100644
--- a/ev.c
+++ b/ev.c
@@ -535,10 +535,10 @@ fd_reify (EV_P)
       ANFD *anfd = anfds + fd;
       ev_io *w;
 
-      int events = 0;
+      unsigned char events = 0;
 
       for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
-        events |= w->events;
+        events |= (unsigned char)w->events;
 
 #if EV_SELECT_IS_WINSOCKET
       if (events)
@@ -549,26 +549,33 @@ fd_reify (EV_P)
         }
 #endif
 
-      anfd->reify = 0;
+      {
+        unsigned char o_events = anfd->events;
+        unsigned char o_reify  = anfd->reify;
+
+        anfd->reify  = 0;
+        anfd->events = events;
 
-      backend_modify (EV_A_ fd, anfd->events, events);
-      anfd->events = events;
+        if (o_events != events || o_reify & EV_IOFDSET)
+          backend_modify (EV_A_ fd, o_events, events);
+      }
     }
 
   fdchangecnt = 0;
 }
 
 void inline_size
-fd_change (EV_P_ int fd)
+fd_change (EV_P_ int fd, int flags)
 {
-  if (expect_false (anfds [fd].reify))
-    return;
+  unsigned char reify = anfds [fd].reify;
+  anfds [fd].reify |= flags;
 
-  anfds [fd].reify = 1;
-
-  ++fdchangecnt;
-  array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
-  fdchanges [fdchangecnt - 1] = fd;
+  if (expect_true (!reify))
+    {
+      ++fdchangecnt;
+      array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
+      fdchanges [fdchangecnt - 1] = fd;
+    }
 }
 
 void inline_speed
@@ -629,7 +636,7 @@ fd_rearm_all (EV_P)
     if (anfds [fd].events)
       {
         anfds [fd].events = 0;
-        fd_change (EV_A_ fd);
+        fd_change (EV_A_ fd, EV_IOFDSET | 1);
       }
 }
 
@@ -1601,7 +1608,8 @@ ev_io_start (EV_P_ ev_io *w)
   array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
   wlist_add (&anfds[fd].head, (WL)w);
 
-  fd_change (EV_A_ fd);
+  fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
+  w->events &= ~EV_IOFDSET;
 }
 
 void noinline
@@ -1616,7 +1624,7 @@ ev_io_stop (EV_P_ ev_io *w)
   wlist_del (&anfds[w->fd].head, (WL)w);
   ev_stop (EV_A_ (W)w);
 
-  fd_change (EV_A_ w->fd);
+  fd_change (EV_A_ w->fd, 1);
 }
 
 void noinline