2003/12/30 23:14:09

[org.ibex.core.git] / src / org / xwt / Scheduler.java

diff --git a/src/org/xwt/Scheduler.java b/src/org/xwt/Scheduler.java
index f433858..6867376 100644 (file)
--- a/src/org/xwt/Scheduler.java
+++ b/src/org/xwt/Scheduler.java
@@ -27,10 +27,23 @@ public class Scheduler {
     public static Task current() { return current; }
 
     /** synchronizd so that we can safely call it from an event-delivery thread, in-context */
-    public static synchronized void renderAll() {
-        for(int i=0; i<Surface.allSurfaces.size(); i++) {
-            Surface s = ((Surface)Surface.allSurfaces.elementAt(i));
-            do { s.render(); } while(s.abort);
+    private static volatile boolean rendering = false;
+    private static volatile boolean again = false;
+    public static void renderAll() {
+        if (rendering) { again = true; return; }
+        synchronized(Scheduler.class) {
+            try {
+                rendering = true;
+                do {
+                    again = false;
+                    for(int i=0; i<Surface.allSurfaces.size(); i++) {
+                        Surface s = ((Surface)Surface.allSurfaces.elementAt(i));
+                        do { s.render(); } while(s.abort);
+                    }
+                } while(again);
+            } finally {
+                rendering = false;
+            }
         }
     }