Merge pull request 'Use OpenJ9' (#260) from openj9 into master

Reviewed-on: SteamWar/BungeeCore#260
Reviewed-by: Chaoscaot <chaoscaot444@gmail.com>

src/de/steamwar/bungeecore/Node.java

@@ -32,8 +32,7 @@ import java.util.logging.Level;
 
 public abstract class Node {
 
-    private static final List<String> JVM_ARGS = Arrays.asList("-Dlog4j.configurationFile=log4j2.xml", "-server", "-Xms128M", "-XX:+UseCompressedOops", "-XX:+TieredCompilation", "-XX:TargetSurvivorRatio=90", "-XX:SurvivorRatio=8", "-XX:MaxTenuringThreshold=15", "-XX:+UnlockExperimentalVMOptions", "-XX:+UseBiasedLocking", "-XX:UseSSE=3", "-XX:+UseCodeCacheFlushing", "-XX:+UseThreadPriorities", "-XX:+AggressiveOpts", "-XX:+ReduceSignalUsage", "-XX:+UseInterpreter", "-XX:+UseSharedSpaces", "-XX:AllocatePrefetchStyle=1", "-XX:+AlwaysCompileLoopMethods", "-XX:+UseConcMarkSweepGC", "-XX:+RewriteFrequentPairs", "-XX:+OptimizeStringConcat", "-XX:+CMSCleanOnEnter", "-XX:+UseInlineCaches");
-    private static final List<String> JVM8_ARGS = Arrays.asList("-XX:ThreadPriorityPolicy=42", "-XX:SharedReadOnlySize=30m", "-XX:+UseFastEmptyMethods", "-XX:+UseFastAccessorMethods");
+    private static final List<String> OPENJ9_ARGS = Arrays.asList("-Xsyslog:none", "-Xtrace:none", "-Xdisableexplicitgc", "-XX:+AlwaysPreTouch", "-XX:+CompactStrings");
     private static final double MIN_FREE_MEM = 4.0 * 1024 * 1024; // 4 GiB
 
     private static final List<Node> nodes = new ArrayList<>();
@@ -74,21 +73,15 @@ public abstract class Node {
     public abstract String getName();
     public abstract double getLoad();
 
-    protected void constructServerstart(List<String> cmd, String serverJar, String worldDir, String levelName, int port, String xmx, String... dParams) {
-        boolean jdk11 = serverJar.contains("1.15.2");
-
-        if(jdk11)
-            cmd.add("/usr/lib/jvm/java-11-openjdk-amd64/bin/java");
-        else
-            cmd.add("java");
+    protected void constructServerstart(File directory, List<String> cmd, String serverJar, String worldDir, String levelName, int port, String xmx, String... dParams) {
+        cmd.add("/usr/lib/jvm/java-16-openj9-amd64/bin/java");
 
         for(String param : dParams){
             cmd.add("-D" + param);
         }
         cmd.add("-Xmx" + xmx);
-        cmd.addAll(JVM_ARGS);
-        if(!jdk11)
-            cmd.addAll(JVM8_ARGS);
+        cmd.add("-Xshareclasses:nonfatal,name=" + directory.getName());
+        cmd.addAll(OPENJ9_ARGS);
         cmd.add("-jar");
         cmd.add("/binarys/" + serverJar);
         cmd.add("--log-strip-color");
@@ -126,7 +119,7 @@ public abstract class Node {
         @Override
         public ProcessBuilder startServer(String serverJar, File directory, String worldDir, String levelName, int port, String xmx, String... dParams) {
             List<String> cmd = new ArrayList<>();
-            constructServerstart(cmd, serverJar, worldDir, levelName, port, xmx, dParams);
+            constructServerstart(directory, cmd, serverJar, worldDir, levelName, port, xmx, dParams);
             ProcessBuilder builder = new ProcessBuilder(cmd);
             builder.directory(directory);
             return builder;
@@ -172,7 +165,7 @@ public abstract class Node {
         public RemoteNode(String remote) {
             this.remote = remote;
 
-            //Determin core count
+            //Determine core count
             Process process;
             try {
                 process = new ProcessBuilder("ssh", remote, "nproc").start();
@@ -213,7 +206,7 @@ public abstract class Node {
             cmd.add("cd");
             cmd.add(directory.getPath());
             cmd.add(";");
-            constructServerstart(cmd, serverJar, worldDir, levelName, port, xmx, dParams);
+            constructServerstart(directory, cmd, serverJar, worldDir, levelName, port, xmx, dParams);
             return new ProcessBuilder(cmd);
         }
 

src/de/steamwar/bungeecore/SubserverSystem.java

@@ -107,7 +107,7 @@ public class SubserverSystem {
 
         File directory = new File(SERVER_PATH, modus.getFolder());
         ProcessBuilder builder = node.startServer(
-                modus.serverJar(), directory, worldDir, mapName, port, "2G",
+                modus.serverJar(), directory, worldDir, mapName, port, "512M",
                 "logPath=" + mapName, "config=" + modus.getConfig(),
                 "fightID=" + eventFightID, "ranked=" + ranked,
                 "checkSchemID=" + checkSchemID, "prepareSchemID=" + prepareSchemID,