From 2185a5cfb74ea5666971e1133f001a9f89c6e7cf Mon Sep 17 00:00:00 2001
From: orbiter <orbiter@6c8d7289-2bf4-0310-a012-ef5d649a1542>
Date: Mon, 5 Jun 2006 20:48:48 +0000
Subject: [PATCH] prevention of possible ConcurrentModificationException This
 happend at my peer and created a deadlock.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2179 6c8d7289-2bf4-0310-a012-ef5d649a1542
---
 source/de/anomic/index/indexTreeMapContainer.java | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/source/de/anomic/index/indexTreeMapContainer.java b/source/de/anomic/index/indexTreeMapContainer.java
index 4857be021..390278670 100644
--- a/source/de/anomic/index/indexTreeMapContainer.java
+++ b/source/de/anomic/index/indexTreeMapContainer.java
@@ -108,12 +108,14 @@ public final class indexTreeMapContainer extends indexAbstractContainer implemen
         // returns the number of new elements
         long startTime = System.currentTimeMillis();
         if (c == null) return 0;
-        Iterator i = c.entries();
         int x = 0;
-        while ((i.hasNext()) && ((maxTime < 0) || ((startTime + maxTime) > System.currentTimeMillis()))) {
-            try {
-                if (addi((indexURLEntry) i.next())) x++;
-            } catch (ConcurrentModificationException e) {}
+        synchronized (c) {
+            Iterator i = c.entries();
+            while ((i.hasNext()) && ((maxTime < 0) || ((startTime + maxTime) > System.currentTimeMillis()))) {
+                try {
+                    if (addi((indexURLEntry) i.next())) x++;
+                } catch (ConcurrentModificationException e) {}
+            }
         }
         this.updateTime = java.lang.Math.max(this.updateTime, c.updated());
         return x;