Paper/Spigot-Server-Patches/0199-Remove-CraftScheduler-Async-Task-Debugger.patch

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From 06e0c2047f0e86e7ca6f80a588f2698df7e75d22 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
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 bce411288..e47f4cca2 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
--
2.16.1