1 files changed, 62 insertions, 0 deletions
diff --git a/Spigot-Server-Patches/0206-Remove-CraftScheduler-Async-Task-Debugger.patch b/Spigot-Server-Patches/0206-Remove-CraftScheduler-Async-Task-Debugger.patch
new file mode 100644
index 0000000000..552213109d
--- /dev/null
+++ b/Spigot-Server-Patches/0206-Remove-CraftScheduler-Async-Task-Debugger.patch
@@ -0,0 +1,62 @@
+From 54c4e8f381c1ff582e949fabafbdec7a9dc9498f Mon Sep 17 00:00:00 2001
+From: Aikar <[email protected]>
+Date: Sun, 5 Feb 2017 00:04:04 -0500
+Subject: [PATCH] Remove CraftScheduler Async Task Debugger
+
+I have not once ever seen this system help debug a crash.
+One report of a suspected memory leak with the system.
+
+This adds additional overhead to asynchronous task dispatching
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+index e30cfb7b7..448c27cc7 100644
+--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
++++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+@@ -80,8 +80,8 @@ public class CraftScheduler implements BukkitScheduler {
+     private final ConcurrentHashMap<Integer, CraftTask> runners = new ConcurrentHashMap<Integer, CraftTask>();
+     private volatile int currentTick = -1;
+     private final Executor executor = Executors.newCachedThreadPool(new com.google.common.util.concurrent.ThreadFactoryBuilder().setNameFormat("Craft Scheduler Thread - %1$d").build()); // Spigot
+-    private CraftAsyncDebugger debugHead = new CraftAsyncDebugger(-1, null, null) {@Override StringBuilder debugTo(StringBuilder string) {return string;}};
+-    private CraftAsyncDebugger debugTail = debugHead;
++    //private CraftAsyncDebugger debugHead = new CraftAsyncDebugger(-1, null, null) {@Override StringBuilder debugTo(StringBuilder string) {return string;}}; // Paper
++    //private CraftAsyncDebugger debugTail = debugHead; // Paper
+     private static final int RECENT_TICKS;
+ 
+     static {
+@@ -371,7 +371,7 @@ public class CraftScheduler implements BukkitScheduler {
+                 }
+                 parsePending();
+             } else {
+-                debugTail = debugTail.setNext(new CraftAsyncDebugger(currentTick + RECENT_TICKS, task.getOwner(), task.getTaskClass()));
++                //debugTail = debugTail.setNext(new CraftAsyncDebugger(currentTick + RECENT_TICKS, task.getOwner(), task.getTaskClass())); // Paper
+                 executor.execute(new ServerSchedulerReportingWrapper(task)); // Paper
+                 // We don't need to parse pending
+                 // (async tasks must live with race-conditions if they attempt to cancel between these few lines of code)
+@@ -388,7 +388,7 @@ public class CraftScheduler implements BukkitScheduler {
+         pending.addAll(temp);
+         temp.clear();
+         MinecraftTimings.bukkitSchedulerFinishTimer.stopTiming();
+-        debugHead = debugHead.getNextHead(currentTick);
++        //debugHead = debugHead.getNextHead(currentTick); // Paper
+     }
+ 
+     private void addTask(final CraftTask task) {
+@@ -447,10 +447,15 @@ public class CraftScheduler implements BukkitScheduler {
+ 
+     @Override
+     public String toString() {
++        // Paper start
++        return "";
++        /*
+         int debugTick = currentTick;
+         StringBuilder string = new StringBuilder("Recent tasks from ").append(debugTick - RECENT_TICKS).append('-').append(debugTick).append('{');
+         debugHead.debugTo(string);
+         return string.append('}').toString();
++        */
++        // Paper end
+     }
+ 
+     @Deprecated
+-- 
+2.12.2
+