clear profiles out of memory on shutdown

router/java/src/net/i2p/router/peermanager/PeerManager.java

@@ -99,6 +99,11 @@ class PeerManager {
         }
     }
 
+    /** @since 0.8.8 */
+    void clearProfiles() {
+        _organizer.clearProfiles();
+    }
+
     Set selectPeers() {
         return _organizer.selectAllPeers();
     }

router/java/src/net/i2p/router/peermanager/PeerManagerFacadeImpl.java

@@ -47,8 +47,10 @@ public class PeerManagerFacadeImpl implements PeerManagerFacade {
     public void shutdown() {
         _log.info("Shutting down the peer manager");
         _testJob.stopTesting();
-        if (_manager != null)
+        if (_manager != null) {
             _manager.storeProfiles();
+            _manager.clearProfiles();
+        }
     }
     
     public void restart() {

router/java/src/net/i2p/router/peermanager/ProfileOrganizer.java

@@ -227,6 +227,19 @@ public class ProfileOrganizer {
     public boolean isWellIntegrated(Hash peer) { return isX(_wellIntegratedPeers, peer); }
     public boolean isFailing(Hash peer) { return isX(_failingPeers, peer); }
         
+    /** @since 0.8.8 */
+    void clearProfiles() {
+        getReadLock();
+        try {
+            _failingPeers.clear();
+            _fastPeers.clear();
+            _highCapacityPeers.clear();
+            _notFailingPeers.clear();
+            _notFailingPeersList.clear();
+            _wellIntegratedPeers.clear();
+        } finally { releaseReadLock(); }
+    }
+
     /** 
      * if a peer sends us more than 5 replies in a searchReply that we cannot
      * fetch, stop listening to them.