* added Object allocation monitor on performanceMemory page

* added some final statements
* changed shutdown sequence order

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1211 6c8d7289-2bf4-0310-a012-ef5d649a1542

htroot/PerformanceMemory_p.html

@@ -312,6 +312,30 @@ Increasing this cache may speed up crawling, but not much space is needed, so th
 </table>
 </p>
 
+<p>
+<div class=small><b>Write Cache Object Allocation:</b></div>
+<table border="0" cellpadding="2" cellspacing="1">
+<tr class="TableHeader" valign="bottom">
+<td class="small">&nbsp;<br>Chunk Sizes</td>
+#{sizes}#
+<td class="small">#[chunk]#</td>
+#{/sizes}#
+</tr>
+<tr class="TableCellDark">
+<td class="TableHeader" align="left">now alive in write cache</td>
+#{alive}#
+<td class="small">#[count]#</td>
+#{/alive}#
+</tr>
+<tr class="TableCellDark">
+<td class="TableHeader" align="left">currently held in write buffer heap</td>
+#{heap}#
+<td class="small">#[count]#</td>
+#{/heap}#
+</tr>
+</table>
+</p>
+
 #%env/templates/footer.template%#
 </body>
 </html>

htroot/PerformanceMemory_p.java

@@ -43,6 +43,7 @@
 //javac -classpath .:../classes PerformanceMemory_p.java
 //if the shell's current path is HTROOT
 
+import java.util.Iterator;
 import java.util.Map;
 import java.io.File;
 
@@ -52,6 +53,7 @@ import de.anomic.server.serverObjects;
 import de.anomic.server.serverSwitch;
 import de.anomic.server.serverFileUtils;
 import de.anomic.yacy.yacyCore;
+import de.anomic.kelondro.kelondroObjectSpace;
 
 public class PerformanceMemory_p {
     
@@ -196,12 +198,12 @@ public class PerformanceMemory_p {
         req = plasmaSwitchboard.robots.size();
         chk = plasmaSwitchboard.robots.dbCacheChunkSize();
         slt = plasmaSwitchboard.robots.dbCacheFillStatus();
-        putprop(prop, env, "Robots", set);        
+        putprop(prop, env, "Robots", set);
         
         req = sb.profiles.size();
         chk = sb.profiles.dbCacheChunkSize();
         slt = sb.profiles.dbCacheFillStatus();
-        putprop(prop, env, "Profiles", set);        
+        putprop(prop, env, "Profiles", set);
         
         prop.put("usedTotal", usedTotal / MB);
         prop.put("currTotal", currTotal / MB);
@@ -214,6 +216,38 @@ public class PerformanceMemory_p {
         prop.put("Xmx", Xmx.substring(0, Xmx.length() - 1));
         String Xms = env.getConfig("javastart_Xms", "Xms10m").substring(3);
         prop.put("Xms", Xms.substring(0, Xms.length() - 1));
+
+        // create statistics about write cache object space
+        int chunksizes = Math.max(
+                           ((Integer) kelondroObjectSpace.statAlive().lastKey()).intValue(),
+                           ((Integer) kelondroObjectSpace.statHeap().lastKey()).intValue()
+                         );
+        int[] statAlive = new int[chunksizes];
+        int[] statHeap  = new int[chunksizes];
+        for (int i = 0; i < chunksizes; i++) { statAlive[i] = 0; statHeap[i] = 0; }
+        Map.Entry entry;
+        Iterator i = kelondroObjectSpace.statAlive().entrySet().iterator();
+        while (i.hasNext()) {
+            entry = (Map.Entry) i.next();
+            statAlive[((Integer) entry.getKey()).intValue() - 1] = ((Integer) entry.getValue()).intValue();
+        }
+        i = kelondroObjectSpace.statHeap().entrySet().iterator();
+        while (i.hasNext()) {
+            entry = (Map.Entry) i.next();
+            statHeap[((Integer) entry.getKey()).intValue() - 1] = ((Integer) entry.getValue()).intValue();
+        }
+        int c = 0;
+        for (int j = 0; j < chunksizes; j++) {
+            if ((statAlive[j] > 0) || (statHeap[j] > 0)) {
+                prop.put("sizes_" + c + "_chunk", Integer.toString(j + 1));
+                prop.put("alive_" + c + "_count", Integer.toString(statAlive[j]));
+                prop.put("heap_"  + c + "_count", Integer.toString(statHeap[j]));
+                c++;
+            }
+        }
+        prop.put("sizes", Integer.toString(c));
+        prop.put("alive", Integer.toString(c));
+        prop.put("heap" , Integer.toString(c));
         
         // return rewrite values for templates
         return prop;

source/de/anomic/data/messageBoard.java

@@ -94,8 +94,8 @@ public class messageBoard {
         return database.cacheFillStatus();
     }
     
-    public void close() throws IOException {
-        database.close();
+    public void close() {
+        try {database.close();} catch (IOException e) {}
     }
     
     private static String dateString() {

source/de/anomic/data/wikiBoard.java

@@ -116,9 +116,9 @@ public class wikiBoard {
         return new int[]{a[0] + b[0], a[1] + b[1], a[2] + b[2], a[3] + b[3]};
     }
     
-    public void close() throws IOException {
-        datbase.close();
-        bkpbase.close();
+    public void close() {
+        try {datbase.close();} catch (IOException e) {}
+        try {bkpbase.close();} catch (IOException e) {}
     }
     
     private static String dateString() {

source/de/anomic/kelondro/kelondroBufferedIOChunks.java

@@ -107,6 +107,8 @@ public final class kelondroBufferedIOChunks extends kelondroAbstractIOChunks imp
     public void write(long pos, byte[] b, int off, int len) throws IOException {
         assert (b.length >= off + len): "write pos=" + pos + ", b.length=" + b.length + ", b='" + new String(b) + "', off=" + off + ", len=" + len;
 
+        //if (len > 10) System.out.println("WRITE(" + name + ", " + pos + ", " + b.length + ", "  + off + ", "  + len + ")");
+        
         // do the write into buffer
         byte[] bb = kelondroObjectSpace.alloc(len);
         System.arraycopy(b, off, bb, 0, len);

source/de/anomic/kelondro/kelondroObjectSpace.java

@@ -43,18 +43,40 @@ package de.anomic.kelondro;
 
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.Iterator;
+import java.util.TreeMap;
+import java.util.Map;
 
 public class kelondroObjectSpace {
 
     private static final int minSize = 10;
-    private static final int maxSize = 4096;
+    private static final int maxSize = 256;
     
-    private static HashMap objects = new HashMap();
+    private static HashMap objHeap = new HashMap();
+    private static TreeMap aliveNow = new TreeMap();
+    //private static TreeMap aliveMax = new TreeMap();
+    
+    private static void incAlive(int size) {
+        final Integer s = new Integer(size);
+        synchronized (aliveNow) {
+            final Integer x = (Integer) aliveNow.get(s);
+            if (x == null) aliveNow.put(s, new Integer(1)); else aliveNow.put(s, new Integer(x.intValue() + 1));
+        }
+    }
+    
+    private static void decAlive(int size) {
+        final Integer s = new Integer(size);
+        synchronized (aliveNow) {
+            final Integer x = (Integer) aliveNow.get(s);
+            if (x == null) aliveNow.put(s, new Integer(-1)); else aliveNow.put(s, new Integer(x.intValue() - 1));
+        }
+    }
     
     public static byte[] alloc(int len) {
         if ((len < minSize) || (len > maxSize)) return new byte[len];
-        synchronized (objects) {
-            ArrayList buf = (ArrayList) objects.get(new Integer(len));
+        incAlive(len);
+        synchronized (objHeap) {
+            ArrayList buf = (ArrayList) objHeap.get(new Integer(len));
             if ((buf == null) || (buf.size() == 0)) return new byte[len];
             return (byte[]) buf.remove(buf.size() - 1);
         }
@@ -65,13 +87,14 @@ public class kelondroObjectSpace {
             b = null;
             return;
         }
-        synchronized (objects) {
+        decAlive(b.length);
+        synchronized (objHeap) {
             final Integer i = new Integer(b.length);
-            ArrayList buf = (ArrayList) objects.get(i);
+            ArrayList buf = (ArrayList) objHeap.get(i);
             if (buf == null) {
                 buf = new ArrayList();
                 buf.add(b);
-                objects.put(i, buf);
+                objHeap.put(i, buf);
             } else {
                 buf.add(b);
             }
@@ -79,4 +102,24 @@ public class kelondroObjectSpace {
         b = null;
     }
     
+    public static TreeMap statAlive() {
+        return aliveNow;
+    }
+    
+    public static TreeMap statHeap() {
+        // creates a statistic output of this object space
+        // the result is a mapping from Integer (chunk size) to Integer (number of counts)
+        // and shows how many Objects are held in this space for usage
+        TreeMap result = new TreeMap();
+        synchronized (objHeap) {
+            Iterator i = objHeap.entrySet().iterator();
+            Map.Entry entry;
+            while (i.hasNext()) {
+                entry = (Map.Entry) i.next();
+                result.put(entry.getKey(), new Integer(((ArrayList) entry.getValue()).size()));
+            }
+        }
+        return result;
+    }
+    
 }

source/de/anomic/kelondro/kelondroRecords.java

@@ -419,7 +419,7 @@ public class kelondroRecords {
         return new File(filename);
     }
     
-    protected int cacheChunkSize(boolean cacheControl) {
+    protected final int cacheChunkSize(boolean cacheControl) {
         return this.headchunksize + element_in_cache + ((cacheControl) ? cache_control_entry : 0);
     }
     
@@ -475,7 +475,7 @@ public class kelondroRecords {
         dispose(handle);
     }
 
-    public class Node {
+    public final class Node {
         // an Node holds all information of one row of data. This includes the key to the entry
         // which is stored as entry element at position 0
         // an Node object can be created in two ways:
@@ -732,12 +732,14 @@ public class kelondroRecords {
 
             // save head
             if (this.headChanged) {
+                //System.out.println("WRITEH(" + filename + ", " + seekpos(this.handle) + ", " + this.headChunk.length + ")");
                 entryFile.write(seekpos(this.handle), this.headChunk);
                 update2Cache(cachePriority);
             }
 
             // save tail
             if ((this.tailChunk != null) && (this.tailChanged)) {
+                //System.out.println("WRITET(" + filename + ", " + (seekpos(this.handle) + headchunksize) + ", " + this.tailChunk.length + ")");
                 entryFile.write(seekpos(this.handle) + headchunksize, this.tailChunk);
             }
         }
@@ -954,7 +956,7 @@ public class kelondroRecords {
         return this.COLWIDTHS[column];
     }
 
-    private long seekpos(Handle handle) {
+    private final long seekpos(Handle handle) {
         assert (handle.index >= 0): "handle index too low: " + handle.index;
         assert (handle.index < USAGE.allCount()): "handle index too high:" + handle.index;
         return POS_NODES + ((long) recordsize * handle.index);
@@ -1069,21 +1071,21 @@ public class kelondroRecords {
         return x;
     }
     
-    public static void NUL2bytes(byte[] b, int offset) {
+    public final static void NUL2bytes(byte[] b, int offset) {
         b[offset    ] = (byte) (0XFF & (NUL >> 24));
         b[offset + 1] = (byte) (0XFF & (NUL >> 16));
         b[offset + 2] = (byte) (0XFF & (NUL >>  8));
         b[offset + 3] = (byte) (0XFF & NUL);
     }
     
-    public static void int2bytes(long i, byte[] b, int offset) {
+    public final static void int2bytes(long i, byte[] b, int offset) {
         b[offset    ] = (byte) (0XFF & (i >> 24));
         b[offset + 1] = (byte) (0XFF & (i >> 16));
         b[offset + 2] = (byte) (0XFF & (i >>  8));
         b[offset + 3] = (byte) (0XFF & i);
     }
     
-    public static int bytes2int(byte[] b, int offset) {
+    public final static int bytes2int(byte[] b, int offset) {
         return (
             ((b[offset    ] & 0xff) << 24) |
             ((b[offset + 1] & 0xff) << 16) |

source/de/anomic/plasma/plasmaCrawlNURL.java

@@ -174,14 +174,12 @@ public class plasmaCrawlNURL extends plasmaURL {
     
     public void close() {
         coreStack.close();
-        try {
-            limitStack.close();
-            overhangStack.close();
-            remoteStack.close();
-            imageStack.close();
-            movieStack.close();
-            musicStack.close();
-        } catch (IOException e) {}
+        limitStack.close();
+        overhangStack.close();
+        remoteStack.close();
+        try {imageStack.close();} catch (IOException e) {}
+        try {movieStack.close();} catch (IOException e) {}
+        try {musicStack.close();} catch (IOException e) {}
         try { super.close(); } catch (IOException e) {}
     }
 

source/de/anomic/plasma/plasmaHTCache.java

@@ -291,8 +291,8 @@ public final class plasmaHTCache {
         }
     }
 
-    public void close() throws IOException {
-        this.responseHeaderDB.close();
+    public void close() {
+        try {this.responseHeaderDB.close();} catch (IOException e) {}
     }
 
     private String ageString(long date, File f) {

source/de/anomic/plasma/plasmaSwitchboard.java

@@ -737,30 +737,26 @@ public final class plasmaSwitchboard extends serverAbstractSwitch implements ser
     public void close() {
         log.logConfig("SWITCHBOARD SHUTDOWN STEP 1: sending termination signal to managed threads:");
         terminateAllThreads(true);
-        log.logConfig("SWITCHBOARD SHUTDOWN STEP 2: sending termination signal to threaded indexing (stand by...)");
+        log.logConfig("SWITCHBOARD SHUTDOWN STEP 2: sending termination signal to database manager");
+        // closing all still running db importer jobs
+        plasmaDbImporter.close();
+        indexDistribution.close();
+        cacheLoader.close();
+        wikiDB.close();
+        userDB.close();
+        messageDB.close();
+        if (facilityDB != null) try {facilityDB.close();} catch (IOException e) {}
+        sbStackCrawlThread.close();
+        urlPool.close();
+        profiles.close();
+        robots.close();
+        parser.close();
+        cacheManager.close();
+        sbQueue.close();
+        flushCitationReference(crg, "crg");
+        log.logConfig("SWITCHBOARD SHUTDOWN STEP 3: sending termination signal to threaded indexing (stand by...)");
         int waitingBoundSeconds = Integer.parseInt(getConfig("maxWaitingWordFlush", "120"));
         wordIndex.close(waitingBoundSeconds);
-        log.logConfig("SWITCHBOARD SHUTDOWN STEP 3: sending termination signal to database manager");
-        try {
-            // closing all still running db importer jobs
-            plasmaDbImporter.close();
-            
-            indexDistribution.close();
-            cacheLoader.close();
-            wikiDB.close();
-            userDB.close();
-            messageDB.close();
-            if (facilityDB != null) facilityDB.close();
-            sbStackCrawlThread.close();
-            urlPool.close();
-            profiles.close();
-            robots.close();
-            parser.close();
-            cacheManager.close();
-            sbQueue.close();
-            //flushCitationReference(crl, "crl");
-            flushCitationReference(crg, "crg");
-        } catch (IOException e) {}
         log.logConfig("SWITCHBOARD SHUTDOWN TERMINATED");
     }
     

source/de/anomic/plasma/plasmaURLPool.java

@@ -82,9 +82,9 @@ public class plasmaURLPool {
         return null;
     }
     
-    public void close() throws IOException {
-        loadedURL.close();
+    public void close() {
+        try {loadedURL.close();} catch (IOException e) {}
         noticeURL.close();
-        errorURL.close();
+        try {errorURL.close();} catch (IOException e) {}
     }
 }

source/de/anomic/plasma/plasmaWordIndexAssortmentCluster.java

@@ -167,17 +167,16 @@ public final class plasmaWordIndexAssortmentCluster {
         int [] spaces = new int[testsize];
         for (int i = testsize - 1; i >= 0; i--) spaces[i] = 0;
         int need = newContainer.size();
-        int s = testsize - 1;
-        while (s >= 0) {
-            spaces[s] = (assortments[s].get(wordHash) == null) ? (s + 1) : 0;
-            need -= spaces[s];
+        int selectedAssortment = testsize - 1;
+        while (selectedAssortment >= 0) {
+            spaces[selectedAssortment] = (assortments[selectedAssortment].get(wordHash) == null) ? (selectedAssortment + 1) : 0;
+            need -= spaces[selectedAssortment];
             assert (need >= 0);
             if (need == 0) break;
-            s = (need < s) ? need : s - 1;
+            selectedAssortment = (need < selectedAssortment) ? need : selectedAssortment - 1;
         }
         if (need == 0) {
             // we found spaces so that we can put in the newContainer into these spaces
-            
             plasmaWordIndexEntryContainer c;
             Iterator i = newContainer.entries();
             for (int j = testsize - 1; j >= 0; j--) {
@@ -189,7 +188,6 @@ public final class plasmaWordIndexAssortmentCluster {
                 }
                 storeForced(wordHash, c);
             }
-
             return null;
         }
         

source/de/anomic/plasma/plasmaWordIndexCache.java

@@ -464,7 +464,7 @@ public final class plasmaWordIndexCache implements plasmaWordIndexInterface {
             entries = null;
             
             // force flush (sometimes)
-            if (System.currentTimeMillis() % 5 == 0) flushFromMem();
+            if (System.currentTimeMillis() % 7 == 4) flushFromMem();
         }
         return added;
     }