Skip task manager tasks when working.

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_C6_Interlude/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -36,18 +36,15 @@ public class AttackStanceTaskManager
 {
 	protected static final Logger LOGGER = Logger.getLogger(AttackStanceTaskManager.class.getName());
 	
-	protected Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
+	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
+	
+	public static final long COMBAT_TIME = 15000;
 	
 	private AttackStanceTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(new FightModeScheduler(), 0, 1000);
 	}
 	
-	public static AttackStanceTaskManager getInstance()
-	{
-		return SingletonHolder.INSTANCE;
-	}
-	
 	public void addAttackStanceTask(Creature actor)
 	{
 		if (actor instanceof Summon)
@@ -108,7 +105,7 @@ public class AttackStanceTaskManager
 						for (Entry<Creature, Long> entry : _attackStanceTasks.entrySet())
 						{
 							final Creature actor = entry.getKey();
-							if ((current - entry.getValue()) > 15000)
+							if ((current - entry.getValue()) > COMBAT_TIME)
 							{
 								actor.broadcastPacket(new AutoAttackStop(actor.getObjectId()));
 								if ((actor instanceof PlayerInstance) && (((PlayerInstance) actor).getPet() != null))
@@ -130,6 +127,15 @@ public class AttackStanceTaskManager
 		}
 	}
 	
+	/**
+	 * Gets the single instance of AttackStanceTaskManager.
+	 * @return single instance of AttackStanceTaskManager
+	 */
+	public static AttackStanceTaskManager getInstance()
+	{
+		return SingletonHolder.INSTANCE;
+	}
+	
 	private static class SingletonHolder
 	{
 		protected static final AttackStanceTaskManager INSTANCE = new AttackStanceTaskManager();

L2J_Mobius_C6_Interlude/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.instance.NpcInstance;
 public class RandomAnimationTaskManager
 {
 	private static final Map<NpcInstance, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<NpcInstance, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_C6_Interlude/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.spawn.Spawn;
 public class RespawnTaskManager
 {
 	private static final Map<NpcInstance, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<NpcInstance, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/taskmanager/AttackStanceTaskManager.java

@@ -38,7 +38,7 @@ public class AttackStanceTaskManager
 	
 	protected static final Map<Creature, Long> _attackStanceTasks = new ConcurrentHashMap<>();
 	
-	public static final long COMBAT_TIME = 15_000;
+	public static final long COMBAT_TIME = 15000;
 	
 	/**
 	 * Instantiates a new attack stance task manager.

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/taskmanager/DecayTaskManager.java

@@ -32,11 +32,18 @@ import org.l2jmobius.gameserver.model.actor.templates.NpcTemplate;
 public class DecayTaskManager
 {
 	private static final Map<Creature, Long> DECAY_SCHEDULES = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public DecayTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Creature, Long> entry : DECAY_SCHEDULES.entrySet())
 			{
@@ -47,6 +54,8 @@ public class DecayTaskManager
 					creature.onDecay();
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/taskmanager/RandomAnimationTaskManager.java

@@ -31,11 +31,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RandomAnimationTaskManager
 {
 	private static final Map<Npc, Long> PENDING_ANIMATIONS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RandomAnimationTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_ANIMATIONS.entrySet())
 			{
@@ -49,6 +56,8 @@ public class RandomAnimationTaskManager
 					PENDING_ANIMATIONS.put(npc, time + (Rnd.get((npc.isAttackable() ? Config.MIN_MONSTER_ANIMATION : Config.MIN_NPC_ANIMATION), (npc.isAttackable() ? Config.MAX_MONSTER_ANIMATION : Config.MAX_NPC_ANIMATION)) * 1000));
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}
 	

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/taskmanager/RespawnTaskManager.java

@@ -30,11 +30,18 @@ import org.l2jmobius.gameserver.model.actor.Npc;
 public class RespawnTaskManager
 {
 	private static final Map<Npc, Long> PENDING_RESPAWNS = new ConcurrentHashMap<>();
+	private static boolean _working = false;
 	
 	public RespawnTaskManager()
 	{
 		ThreadPool.scheduleAtFixedRate(() ->
 		{
+			if (_working)
+			{
+				return;
+			}
+			_working = true;
+			
 			final long time = System.currentTimeMillis();
 			for (Entry<Npc, Long> entry : PENDING_RESPAWNS.entrySet())
 			{
@@ -50,6 +57,8 @@ public class RespawnTaskManager
 					}
 				}
 			}
+			
+			_working = false;
 		}, 0, 1000);
 	}