Paper/Spigot-Server-Patches/0203-Remove-the-Vanilla-Method-Profiler.patch

From cc3ecd92e74492a59cfe82650919b1217fc5d4c9 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 21 Jan 2017 02:00:33 -0500
Subject: [PATCH] Remove the Vanilla Method Profiler

Spigot rebrought this back after it was removed for years due to the performance hit.

It is unknown if the JIT will optimize it out as effeciently with how it was
added, so we do not want any risk of performance degredation.

Paper has a proper Timings system that makes the Vanilla Method profiler obsolete and inferior.

diff --git a/src/main/java/net/minecraft/server/CommandDebug.java b/src/main/java/net/minecraft/server/CommandDebug.java
index fe58d428f..938f62f83 100644
--- a/src/main/java/net/minecraft/server/CommandDebug.java
+++ b/src/main/java/net/minecraft/server/CommandDebug.java
@@ -33,12 +33,11 @@ public class CommandDebug extends CommandAbstract {
 
     public void execute(MinecraftServer minecraftserver, ICommandListener icommandlistener, String[] astring) throws CommandException {
         // CraftBukkit start - only allow use when enabled (so that no blank profile results occur)
-        if (!minecraftserver.methodProfiler.ENABLED) {
-            icommandlistener.sendMessage(new ChatComponentText("Vanilla debug profiling is disabled."));
-            icommandlistener.sendMessage(new ChatComponentText("To enable, restart the server with `-DenableDebugMethodProfiler=true' before `-jar'."));
-            icommandlistener.sendMessage(new ChatComponentText("Use `/timings' for plugin timings."));
+        if (true) { // Paper
+            icommandlistener.sendMessage(new ChatComponentText("Use `/timings report'")); // Paper
             return;
         }
+        /*
         // CraftBukkit end
         if (astring.length < 1) {
             throw new ExceptionUsage("commands.debug.usage", new Object[0]);
@@ -144,7 +143,7 @@ public class CommandDebug extends CommandAbstract {
             return astring[(int) (System.nanoTime() % (long) astring.length)];
         } catch (Throwable throwable) {
             return "Witty comment unavailable :(";
-        }
+        }*/ // Paper
     }
 
     public List<String> tabComplete(MinecraftServer minecraftserver, ICommandListener icommandlistener, String[] astring, @Nullable BlockPosition blockposition) {
diff --git a/src/main/java/net/minecraft/server/MethodProfiler.java b/src/main/java/net/minecraft/server/MethodProfiler.java
index 654652916..276983485 100644
--- a/src/main/java/net/minecraft/server/MethodProfiler.java
+++ b/src/main/java/net/minecraft/server/MethodProfiler.java
@@ -9,8 +9,9 @@ import java.util.List;
 import java.util.Map;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-
-public class MethodProfiler {
+// Paper - Remove this system - we have a more efficient Timings system
+/*
+class MethodProfiler {
 
     public static final boolean ENABLED = Boolean.getBoolean("enableDebugMethodProfiler"); // CraftBukkit - disable unless specified in JVM arguments
     private static final Logger b = LogManager.getLogger();
@@ -163,3 +164,22 @@ public class MethodProfiler {
         }
     }
 }
+*/
+
+public class MethodProfiler {
+    public boolean a;
+
+    MethodProfiler() {}
+
+    public final void a() {}
+
+    public final void a(String s) {}
+
+    public final void b() {}
+
+    public final void c(String s) {}
+
+    public final String c() {
+        return null;
+    }
+}
-- 
2.12.2