7033533: realSync() doesn't work with Xfce

Reviewed-by: anthony, serb, leonidr

src/solaris/classes/sun/awt/X11/XRootWindow.java

 /*
- * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -46,7 +46,8 @@ class XRootWindow extends XBaseWindow {
     }
 
     private XRootWindow() {
-        super(new XCreateWindowParams(new Object[] {DELAYED, Boolean.TRUE}));
+        super(new XCreateWindowParams(new Object[] { DELAYED, Boolean.TRUE,
+                                                     EVENT_MASK, XConstants.StructureNotifyMask }));
     }
 
     public void postInit(XCreateWindowParams params){

src/solaris/classes/sun/awt/X11/XToolkit.java

@@ -2354,9 +2354,7 @@ public final class XToolkit extends UNIXToolkit implements Runnable {
 
     private static XEventDispatcher oops_waiter;
     private static boolean oops_updated;
-    private static boolean oops_failed;
-    private XAtom oops;
-    private static final long WORKAROUND_SLEEP = 100;
+    private static boolean oops_move;
 
     /**
      * @inheritDoc
@@ -2367,52 +2365,33 @@ public final class XToolkit extends UNIXToolkit implements Runnable {
         if (oops_waiter == null) {
             oops_waiter = new XEventDispatcher() {
                     public void dispatchEvent(XEvent e) {
-                        if (e.get_type() == XConstants.SelectionNotify) {
-                            XSelectionEvent pe = e.get_xselection();
-                            if (pe.get_property() == oops.getAtom()) {
-                                oops_updated = true;
-                                awtLockNotifyAll();
-                            } else if (pe.get_selection() == XAtom.get("WM_S0").getAtom() &&
-                                       pe.get_target() == XAtom.get("VERSION").getAtom() &&
-                                       pe.get_property() == 0 &&
-                                       XlibWrapper.XGetSelectionOwner(getDisplay(), XAtom.get("WM_S0").getAtom()) == 0)
-                            {
-                                // WM forgot to acquire selection  or there is no WM
-                                oops_failed = true;
-                                awtLockNotifyAll();
-                            }
-
+                        if (e.get_type() == XConstants.ConfigureNotify) {
+                            // OOPS ConfigureNotify event catched
+                            oops_updated = true;
+                            awtLockNotifyAll();
                         }
                     }
                 };
         }
 
-        if (oops == null) {
-            oops = XAtom.get("OOPS");
-        }
-
         awtLock();
         try {
             addEventDispatcher(win.getWindow(), oops_waiter);
 
             oops_updated = false;
-            oops_failed = false;
-            // Wait for selection notify for oops on win
             long event_number = getEventNumber();
-            XAtom atom = XAtom.get("WM_S0");
-            if (eventLog.isLoggable(PlatformLogger.Level.FINER)) {
-                eventLog.finer("WM_S0 selection owner {0}", XlibWrapper.XGetSelectionOwner(getDisplay(), atom.getAtom()));
-            }
-            XlibWrapper.XConvertSelection(getDisplay(), atom.getAtom(),
-                                          XAtom.get("VERSION").getAtom(), oops.getAtom(),
-                                          win.getWindow(), XConstants.CurrentTime);
+            // Generate OOPS ConfigureNotify event
+            XlibWrapper.XMoveWindow(getDisplay(), win.getWindow(), oops_move ? 0 : 1, 0);
+            // Change win position each time to avoid system optimization
+            oops_move = !oops_move;
             XSync();
 
-            eventLog.finer("Requested OOPS");
+            eventLog.finer("Generated OOPS ConfigureNotify event");
 
             long start = System.currentTimeMillis();
-            while (!oops_updated && !oops_failed) {
+            while (!oops_updated) {
                 try {
+                    // Wait for OOPS ConfigureNotify event
                     awtLockWait(timeout);
                 } catch (InterruptedException e) {
                     throw new RuntimeException(e);
@@ -2423,20 +2402,8 @@ public final class XToolkit extends UNIXToolkit implements Runnable {
                     throw new OperationTimedOut(Long.toString(System.currentTimeMillis() - start));
                 }
             }
-            if (oops_failed && getEventNumber() - event_number == 1) {
-                // If selection update failed we can simply wait some time
-                // hoping some events will arrive
-                awtUnlock();
-                eventLog.finest("Emergency sleep");
-                try {
-                    Thread.sleep(WORKAROUND_SLEEP);
-                } catch (InterruptedException ie) {
-                    throw new RuntimeException(ie);
-                } finally {
-                    awtLock();
-                }
-            }
-            return getEventNumber() - event_number > 2;
+            // Don't take into account OOPS ConfigureNotify event
+            return getEventNumber() - event_number > 1;
         } finally {
             removeEventDispatcher(win.getWindow(), oops_waiter);
             eventLog.finer("Exiting syncNativeQueue");