--- IO-AIO/AIO.xs	2018/01/06 02:11:10	1.252
+++ IO-AIO/AIO.xs	2018/02/20 04:32:59	1.253
@@ -108,6 +108,10 @@
 
 #include "libeio/config.h"
 
+#if HAVE_EVENTFD
+# include <sys/eventfd.h>
+#endif
+
 #if HAVE_RLIMITS
   #include <sys/time.h>
   #include <sys/resource.h>
@@ -1163,6 +1167,10 @@
     const_iv (SPLICE_F_MORE)
     const_iv (SPLICE_F_GIFT)
 
+    const_iv (EFD_CLOEXEC)
+    const_iv (EFD_NONBLOCK)
+    const_iv (EFD_SEMAPHORE)
+
     /* these are libeio constants, and are independent of gendef0 */
     const_eio (SEEK_SET)
     const_eio (SEEK_CUR)
@@ -2158,6 +2166,20 @@
           }
 }
 
+void
+eventfd (unsigned int initval = 0, int flags = 0)
+	PPCODE:
+{
+	int fd;
+#if HAVE_EVENTFD
+        fd = eventfd (initval, flags);
+#else
+        fd = (errno = ENOSYS, -1);
+#endif
+	
+        XPUSHs (newmortalFH (fd, O_RDWR));
+}
+
 UV
 get_fdlimit ()
 	CODE: