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

From b935b5011a9c2baba9f8e995eef8aca014cd5c5a 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 89708da96..7586168db 100644
--- a/src/main/java/net/minecraft/server/CommandDebug.java
+++ b/src/main/java/net/minecraft/server/CommandDebug.java
@@ -35,12 +35,11 @@ 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]);
@@ -146,7 +145,7 @@ 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 20aa10c14..ebc324ed1 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;
+    }
+}
-- 
2.13.0