added necessary synchronization for logging statistics (causes deadlock)

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6083 6c8d7289-2bf4-0310-a012-ef5d649a1542

htroot/yacysearch.java

@@ -195,6 +195,7 @@ public class yacysearch {
         	Log.logInfo("LOCAL_SEARCH", "ACCECC CONTROL: WHITELISTED CLIENT FROM " + client + " gets no search restrictions");
         } else if (global || fetchSnippets) {
             // in case that we do a global search or we want to fetch snippets, we check for DoS cases
+            synchronized (trackerHandles) {
                 int accInOneSecond = trackerHandles.tailSet(Long.valueOf(System.currentTimeMillis() - 1000)).size();
                 int accInThreeSeconds = trackerHandles.tailSet(Long.valueOf(System.currentTimeMillis() - 3000)).size();
                 int accInOneMinute = trackerHandles.tailSet(Long.valueOf(System.currentTimeMillis() - 60000)).size();
@@ -219,6 +220,7 @@ public class yacysearch {
                     Log.logWarning("LOCAL_SEARCH", "ACCECC CONTROL: CLIENT FROM " + client + ": " + accInOneSecond + " searches in one second, blocked global search and snippets");
                 }
             }
+        }
         
         if ((!block) && (post == null || post.get("cat", "href").equals("href"))) {
             
@@ -509,9 +511,11 @@ public class yacysearch {
             
             // update the search tracker
             try {
+                synchronized (trackerHandles) {
                 	trackerHandles.add(theQuery.handle);
                 	if (trackerHandles.size() > 1000) trackerHandles.remove(trackerHandles.first());
                 	sb.localSearchTracker.put(client, trackerHandles);
+                }
             	if (sb.localSearchTracker.size() > 1000) sb.localSearchTracker.remove(sb.localSearchTracker.keys().nextElement());
             } catch (Exception e) {
             	e.printStackTrace();