use interrupts in threads(use even less cpu in idle)

src/main/java/de/bixilon/minosoft/logging/Log.java

@@ -13,8 +13,6 @@
 
 package de.bixilon.minosoft.logging;
 
-import de.bixilon.minosoft.util.Util;
-
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.List;
@@ -23,6 +21,7 @@ public class Log {
     static LogLevel level = LogLevel.PROTOCOL;
     final static SimpleDateFormat timeFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
     final static List<String> queue = new ArrayList<>();
+    static Thread logThread;
 
     public static void log(LogLevel l, String message) {
         if (l.getId() > level.getId()) {
@@ -30,11 +29,11 @@ public class Log {
             return;
         }
         queue.add(String.format("[%s] [%s] %s", timeFormat.format(System.currentTimeMillis()), l.name(), message));
+        logThread.interrupt();
     }
 
     public static void initThread() {
-
+        logThread = new Thread(() -> {
-        Thread logThread = new Thread(() -> {
             while (true) {
                 while (queue.size() > 0) {
                     // something to print
@@ -44,9 +43,13 @@ public class Log {
 
                     queue.remove(0);
                 }
-                Util.sleep(1);
+                try {
-            }
+                    // wait for interupt
+                    Thread.sleep(100);
+                } catch (InterruptedException ignored) {
+                }
 
+            }
         });
         logThread.start();
     }

src/main/java/de/bixilon/minosoft/protocol/network/Connection.java

@@ -25,7 +25,6 @@ import de.bixilon.minosoft.protocol.packets.serverbound.status.PacketStatusReque
 import de.bixilon.minosoft.protocol.protocol.ConnectionState;
 import de.bixilon.minosoft.protocol.protocol.PacketHandler;
 import de.bixilon.minosoft.protocol.protocol.ProtocolVersion;
-import de.bixilon.minosoft.util.Util;
 
 import java.util.ArrayList;
 
@@ -37,6 +36,7 @@ public class Connection {
     private final ArrayList<ClientboundPacket> handlingQueue;
     private Player player;
     private ConnectionState state = ConnectionState.DISCONNECTED;
+    Thread handleThread;
 
     private boolean onlyPing;
 
@@ -115,6 +115,7 @@ public class Connection {
 
     public void handle(ClientboundPacket p) {
         handlingQueue.add(p);
+        handleThread.interrupt();
     }
 
     public boolean isOnlyPing() {
@@ -134,7 +135,7 @@ public class Connection {
     }
 
     private void startHandlingThread() {
-        Thread handleThread = new Thread(() -> {
+        handleThread = new Thread(() -> {
             while (getConnectionState() != ConnectionState.DISCONNECTED) {
                 while (handlingQueue.size() > 0) {
                     try {
@@ -145,7 +146,11 @@ public class Connection {
                     }
                     handlingQueue.remove(0);
                 }
-                Util.sleep(1);
+                try {
+                    // sleep, wait for an interrupt from other thread
+                    Thread.sleep(100);
+                } catch (InterruptedException ignored) {
+                }
             }
         });
         handleThread.start();

src/main/java/de/bixilon/minosoft/protocol/network/Network.java

@@ -40,6 +40,7 @@ public class Network {
     private boolean encryptionEnabled = false;
     private Cipher cipherEncrypt;
     private Cipher cipherDecrypt;
+    private Thread packetThread;
 
     public Network(Connection c) {
         this.connection = c;
@@ -99,6 +100,7 @@ public class Network {
 
                         byte[] raw = dIn.readNBytes(length);
                         binQueueIn.add(raw);
+                        packetThread.interrupt();
                     }
                     Util.sleep(1);
 
@@ -118,7 +120,7 @@ public class Network {
         // read data
         // safety first, but will not occur
         // sleep 1 ms
-        Thread packetThread = new Thread(() -> {
+        packetThread = new Thread(() -> {
             // compressed data, makes packets to binary data
             while (connection.getConnectionState() != ConnectionState.DISCONNECTED) {
 
@@ -181,7 +183,11 @@ public class Network {
 
                     binQueueIn.remove(0);
                 }
-                Util.sleep(1); // sleep 1 ms
+                try {
+                    // sleep, wait for an interrupt from other thread
+                    Thread.sleep(100);
+                } catch (InterruptedException ignored) {
+                }
 
             }
         });
@@ -190,6 +196,7 @@ public class Network {
 
     public void sendPacket(ServerboundPacket p) {
         queue.add(p);
+        packetThread.interrupt();
     }
 
     public void enableEncryption(SecretKey secretKey) {