fix for some possible causes of memory leaks

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7741 6c8d7289-2bf4-0310-a012-ef5d649a1542

htroot/yacy/search.java

@@ -52,6 +52,7 @@ import net.yacy.kelondro.order.Bitfield;
 import net.yacy.kelondro.rwi.ReferenceContainer;
 import net.yacy.kelondro.util.EventTracker;
 import net.yacy.kelondro.util.ISO639;
+import net.yacy.kelondro.util.MemoryControl;
 
 import de.anomic.crawler.CrawlProfile;
 import de.anomic.search.AccessTracker;
@@ -422,6 +423,7 @@ public final class search {
             while (trackerHandles.size() > 36) if (!trackerHandles.remove(trackerHandles.first())) break;
         }
         sb.remoteSearchTracker.put(client, trackerHandles);
+        if (MemoryControl.shortStatus()) sb.remoteSearchTracker.clear();
         
         // log
         yacyCore.log.logInfo("EXIT HASH SEARCH: " +

htroot/yacysearch.java

@@ -691,9 +691,10 @@ public class yacysearch {
                     }
                 }
                 sb.localSearchTracker.put(client, trackerHandles);
-            	if (sb.localSearchTracker.size() > 1000) {
+            	if (sb.localSearchTracker.size() > 100) {
                     sb.localSearchTracker.remove(sb.localSearchTracker.keys().nextElement());
                 }
+            	if (MemoryControl.shortStatus()) sb.localSearchTracker.clear();
             } catch (Exception e) {
                 Log.logException(e);
             }

source/de/anomic/search/MetadataRepository.java

@@ -58,6 +58,7 @@ import net.yacy.kelondro.index.RowSpaceExceededException;
 import net.yacy.kelondro.logging.Log;
 import net.yacy.kelondro.order.CloneableIterator;
 import net.yacy.kelondro.table.SplitTable;
+import net.yacy.kelondro.util.MemoryControl;
 import net.yacy.repository.Blacklist;
 
 public final class MetadataRepository implements Iterable<byte[]> {
@@ -176,6 +177,7 @@ public final class MetadataRepository implements Iterable<byte[]> {
             throw new IOException("RowSpaceExceededException in " + this.urlIndexFile.filename() + ": " + e.getMessage());
         }
         statsDump = null;
+        if (MemoryControl.shortStatus()) clearCache() ;
     }
     
     public boolean remove(final byte[] urlHashBytes) {

source/de/anomic/search/SearchEventCache.java

@@ -56,6 +56,7 @@ public class SearchEventCache {
     }
     
     public static void put(String eventID, SearchEvent event) {
+        if (MemoryControl.shortStatus()) cleanupEvents(true);
         lastEventID = eventID;
         SearchEvent oldEvent = lastEvents.put(eventID, event);
         if (oldEvent == null) cacheInsert++;

source/net/yacy/document/parser/html/TransformerWriter.java

@@ -246,7 +246,7 @@ public final class TransformerWriter extends Writer {
 					} catch (IOException e) {
 					    Log.logException(e);
 					}
-                    if (filterCont == null) filterCont = new CharBuffer(); else filterCont.reset();
+                    if (filterCont == null) filterCont = new CharBuffer(Math.max(100, content.length)); else filterCont.reset();
                     return new char[0];
                 } else {
                      // we ignore that thing and return it again

source/net/yacy/kelondro/blob/Compressor.java

@@ -45,6 +45,7 @@ import net.yacy.kelondro.logging.Log;
 import net.yacy.kelondro.order.ByteOrder;
 import net.yacy.kelondro.order.CloneableIterator;
 import net.yacy.kelondro.util.ByteArray;
+import net.yacy.kelondro.util.MemoryControl;
 
 
 public class Compressor implements BLOB {
@@ -333,6 +334,8 @@ public class Compressor implements BLOB {
             this.buffer.put(UTF8.String(key), b);
             this.bufferlength += b.length;
         }
+        
+        if (MemoryControl.shortStatus()) flushAll();
     }
 
     public synchronized void delete(byte[] key) throws IOException {