--- libev/ev.c	2012/04/22 10:14:20	1.423
+++ libev/ev.c	2012/05/01 22:01:40	1.424
@@ -1846,6 +1846,8 @@
 inline_speed void
 evpipe_write (EV_P_ EV_ATOMIC_T *flag)
 {
+  ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
+
   if (expect_true (*flag))
     return;
 
@@ -1914,11 +1916,15 @@
 
   pipe_write_skipped = 0;
 
+  ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
+
 #if EV_SIGNAL_ENABLE
   if (sig_pending)
     {
       sig_pending = 0;
 
+      ECB_MEMORY_FENCE_RELEASE;
+
       for (i = EV_NSIG - 1; i--; )
         if (expect_false (signals [i].pending))
           ev_feed_signal_event (EV_A_ i + 1);
@@ -1930,6 +1936,8 @@
     {
       async_pending = 0;
 
+      ECB_MEMORY_FENCE_RELEASE;
+
       for (i = asynccnt; i--; )
         if (asyncs [i]->sent)
           {