89 lines
4.1 KiB
Diff
89 lines
4.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 23 Oct 2018 23:14:38 -0400
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Subject: [PATCH] Improve Server Thread Pool and Thread Priorities
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Use a simple executor since Fork join is a much more complex pool
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type and we are not using its capabilities.
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Set thread priorities so main thread has above normal priority over
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server threads
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Allow usage of a single thread executor by not using ForkJoin so single core CPU's.
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index a7be2875faa968d2e3939974f62c977ca03e9c5b..29f7e78fc21ccca1a080055fe616996d1ede666f 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -176,6 +176,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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S s0 = function.apply(thread); // CraftBukkit - decompile error
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atomicreference.set(s0);
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+ thread.setPriority(Thread.NORM_PRIORITY+2); // Paper - boost priority
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thread.start();
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return s0;
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}
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diff --git a/src/main/java/net/minecraft/server/ServerWorkerThread.java b/src/main/java/net/minecraft/server/ServerWorkerThread.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..59cfb76d737f923c7e424743ef370c969ae14c26
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--- /dev/null
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+++ b/src/main/java/net/minecraft/server/ServerWorkerThread.java
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@@ -0,0 +1,24 @@
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+package net.minecraft.server;
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+
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+import java.util.concurrent.CompletionException;
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+import java.util.concurrent.atomic.AtomicInteger;
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+
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+public class ServerWorkerThread extends Thread {
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+ private static final AtomicInteger threadId = new AtomicInteger(1);
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+ public ServerWorkerThread(Runnable target) {
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+ super(target, "Server-Worker-" + threadId.getAndIncrement());
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+ setPriority(Thread.NORM_PRIORITY-1); // Deprioritize over main
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+ this.setUncaughtExceptionHandler((thread, throwable) -> {
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+ if (throwable instanceof CompletionException) {
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+ throwable = throwable.getCause();
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+ }
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+
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+ if (throwable instanceof ReportedException) {
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+ DispenserRegistry.a(((ReportedException) throwable).a().e());
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+ System.exit(-1);
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+ }
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+
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+ MinecraftServer.LOGGER.error(String.format("Caught exception in thread %s", thread), throwable);
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+ });
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+ }
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+}
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diff --git a/src/main/java/net/minecraft/server/SystemUtils.java b/src/main/java/net/minecraft/server/SystemUtils.java
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index 275c1d2d1eb2649de9a9b5aece6e88c21362efba..3299ac0b0115cb1166c1ee449bd49292e553b7af 100644
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--- a/src/main/java/net/minecraft/server/SystemUtils.java
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+++ b/src/main/java/net/minecraft/server/SystemUtils.java
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@@ -76,14 +76,17 @@ public class SystemUtils {
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}
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private static ExecutorService a(String s) {
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- int i = MathHelper.clamp(Runtime.getRuntime().availableProcessors() - 1, 1, 7);
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- Object object;
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+ // Paper start - use simpler thread pool that allows 1 thread
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+ int i = Math.min(8, Math.max(Runtime.getRuntime().availableProcessors() - 2, 1));
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+ i = Integer.getInteger("Paper.WorkerThreadCount", i);
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+ ExecutorService object;
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if (i <= 0) {
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object = MoreExecutors.newDirectExecutorService();
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} else {
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- object = new ForkJoinPool(i, (forkjoinpool) -> {
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- ForkJoinWorkerThread forkjoinworkerthread = new ForkJoinWorkerThread(forkjoinpool) {
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+ object = new java.util.concurrent.ThreadPoolExecutor(i, i,0L, TimeUnit.MILLISECONDS, new java.util.concurrent.LinkedBlockingQueue<Runnable>(), ServerWorkerThread::new);
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+ }
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+ /*
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protected void onTermination(Throwable throwable) {
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if (throwable != null) {
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SystemUtils.LOGGER.warn("{} died", this.getName(), throwable);
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@@ -99,6 +102,7 @@ public class SystemUtils {
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return forkjoinworkerthread;
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}, SystemUtils::a, true);
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}
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+ }*/ // Paper end
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return (ExecutorService) object;
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}
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