sync code with last improvements from OpenBSD

xserver/hw/xnest/Handlers.c

@@ -0,0 +1,45 @@
+/*
+
+Copyright 1993 by Davor Matic
+
+Permission to use, copy, modify, distribute, and sell this software
+and its documentation for any purpose is hereby granted without fee,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation.  Davor Matic makes no representations about
+the suitability of this software for any purpose.  It is provided "as
+is" without express or implied warranty.
+
+*/
+
+#ifdef HAVE_XNEST_CONFIG_H
+#include <xnest-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "screenint.h"
+#include "input.h"
+#include "misc.h"
+#include "scrnintstr.h"
+#include "windowstr.h"
+#include "servermd.h"
+
+#include "Xnest.h"
+
+#include "Display.h"
+#include "Events.h"
+#include "Handlers.h"
+
+void
+xnestBlockHandler(void *blockData, void *timeout)
+{
+    xnestCollectExposures();
+    XFlush(xnestDisplay);
+}
+
+void
+xnestWakeupHandler(void *blockData, int result)
+{
+    xnestCollectEvents();
+}