Some performance measurement. Game state copying performance is good.

Mage.Tests/src/test/java/org/mage/test/ai/LevelUpAbilityTest.java

@@ -4,6 +4,7 @@ import junit.framework.Assert;
 import mage.Constants;
 import mage.counters.Counter;
 import mage.counters.CounterType;
+import mage.game.GameImpl;
 import mage.game.permanent.Permanent;
 import org.junit.Test;
 import org.mage.test.serverside.base.CardTestBase;
@@ -36,5 +37,8 @@ public class LevelUpAbilityTest extends CardTestBase {
         Assert.assertNotNull(master.getCounters());
         Assert.assertFalse(master.getCounters().isEmpty());
         Assert.assertEquals(12, master.getCounters().getCount(CounterType.LEVEL));
+
+        System.out.println("Copy count: " + GameImpl.copyCount);
+        System.out.println("Copy time: " + GameImpl.copyTime + " ms");
     }
 }

Mage.Tests/src/test/java/org/mage/test/serverside/performance/CopyGameStatePerformanceTest.java

@@ -0,0 +1,35 @@
+package org.mage.test.serverside.performance;
+
+import mage.game.Game;
+import org.mage.test.serverside.base.CardTestBase;
+
+/**
+ * Test for copying game state.
+ *
+ * @ayratn
+ */
+public class CopyGameStatePerformanceTest extends CardTestBase {
+
+    public void run() throws Exception {
+        init();
+        reset();
+        System.out.println("Started copying...");
+        long t1 = System.currentTimeMillis();
+        for (int i = 0; i < 2000; i++) {
+            Game game = currentGame.copy();
+            Game game2 = game.copy();
+        }
+        long t2 = System.currentTimeMillis();
+        System.out.println("Test took: " + (t2-t1) + " ms");
+    }
+
+    public static void main(String[] args) {
+        CopyGameStatePerformanceTest test = new CopyGameStatePerformanceTest();
+        try {
+            test.run();
+        } catch (Exception e) {
+            e.printStackTrace();
+            throw new RuntimeException(e);
+        }
+    }
+}

Mage/src/mage/game/GameImpl.java

@@ -105,6 +105,9 @@ public abstract class GameImpl<T extends GameImpl<T>> implements Game, Serializa
 	protected MultiplayerAttackOption attackOption;
 	protected GameOptions gameOptions;
 
+    public static volatile int copyCount = 0;
+    public static volatile long copyTime = 0;
+
 	@Override
 	public abstract T copy();
 
@@ -116,6 +119,10 @@ public abstract class GameImpl<T extends GameImpl<T>> implements Game, Serializa
 	}
 
 	public GameImpl(final GameImpl<T> game) {
+        long t1 = 0;
+        if (logger.isDebugEnabled()) {
+            t1 = System.currentTimeMillis();
+        }
 		this.id = game.id;
 		this.ready = game.ready;
 		this.startingPlayerId = game.startingPlayerId;
@@ -131,6 +138,10 @@ public abstract class GameImpl<T extends GameImpl<T>> implements Game, Serializa
 		this.simulation = game.simulation;
         this.gameOptions = game.gameOptions;
         this.lki.putAll(game.lki);
+        if (logger.isDebugEnabled()) {
+            copyCount++;
+            copyTime += (System.currentTimeMillis() - t1);
+        }
 	}
 
 	@Override