Synchronized isExhausted()

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/FOP_0-20-0_Alt-Design@197205 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/src/java/org/apache/fop/datastructs/SyncedCircularBuffer.java b/src/java/org/apache/fop/datastructs/SyncedCircularBuffer.java
index 370af72acade49dd0ed9a5eadec8738bde315b09..97c87280acfb12eb30f8c4f14b8524574a97fa19 100644 (file)
--- a/src/java/org/apache/fop/datastructs/SyncedCircularBuffer.java
+++ b/src/java/org/apache/fop/datastructs/SyncedCircularBuffer.java
@@ -250,7 +250,9 @@ public class SyncedCircularBuffer {
      * has been processed, and the buffer is empty.
      */
     public boolean isExhausted() {
-        return producerFinished && isEmpty(); 
+        synchronized (this) {
+            return producerFinished && isEmpty(); 
+        }
     }
 
 }