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Restore thread pool names for Bootstrap vs main

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1.16.2 introduced 2 thread pools for Bootstrap vs main we didn't account for.

This also sets Bootstrap priority to be 1 less thread priority too so MC Main threads will always have
more priority specially on servers running multiple instances, since bootstrap tends to use up all CPU.
This commit is contained in:
Aikar 2020-09-12 11:23:34 -04:00
parent ff60225e01
commit 06e816fd71
1 changed files with 27 additions and 19 deletions
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46
Spigot-Server-Patches/Improve-Server-Thread-Pool-and-Thread-Priorities.patch
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@ -31,40 +31,40 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
@@ -0,0 +0,0 @@
+package net.minecraft.server;
+
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class ServerWorkerThread extends Thread {
+ private static final AtomicInteger threadId = new AtomicInteger(1);
+ public ServerWorkerThread(Runnable target) {
+ super(target, "Server-Worker-" + threadId.getAndIncrement());
+ setPriority(Thread.NORM_PRIORITY-1); // Deprioritize over main
+ public ServerWorkerThread(Runnable target, String poolName, int prioritityModifier) {
+ super(target, "Worker-" + poolName + "-" + threadId.getAndIncrement());
+ setPriority(Thread.NORM_PRIORITY+prioritityModifier); // Deprioritize over main
+ this.setDaemon(true);
+ this.setUncaughtExceptionHandler((thread, throwable) -> {
+ thread.setDaemon(true);
+ if (throwable instanceof CompletionException) {
+ throwable = throwable.getCause();
+ }
+
+ if (throwable instanceof ReportedException) {
+ DispenserRegistry.a(((ReportedException) throwable).a().e());
+ System.exit(-1);
+ }
+
+ MinecraftServer.LOGGER.error(String.format("Caught exception in thread %s", thread), throwable);
+ });
+ this.setUncaughtExceptionHandler(SystemUtils::onThreadError);
+ }
+}
diff --git a/src/main/java/net/minecraft/server/SystemUtils.java b/src/main/java/net/minecraft/server/SystemUtils.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/server/SystemUtils.java
+++ b/src/main/java/net/minecraft/server/SystemUtils.java
@@ -0,0 +0,0 @@ import org.apache.logging.log4j.Logger;
public class SystemUtils {
private static final AtomicInteger c = new AtomicInteger(1);
- private static final ExecutorService d = a("Bootstrap");
- private static final ExecutorService e = a("Main");
+ private static final ExecutorService d = a("Bootstrap", -2); // Paper - add -2 priority
+ private static final ExecutorService e = a("Main", -1); // Paper - add -1 priority
private static final ExecutorService f = n();
public static LongSupplier a = System::nanoTime;
public static final UUID b = new UUID(0L, 0L); public static final UUID getNullUUID() {return b;} // Paper OBFHELPER
@@ -0,0 +0,0 @@ public class SystemUtils {
return Instant.now().toEpochMilli();
}
private static ExecutorService a(String s) {
- private static ExecutorService a(String s) {
- int i = MathHelper.clamp(Runtime.getRuntime().availableProcessors() - 1, 1, 7);
- Object object;
+ private static ExecutorService a(String s, int priorityModifier) { // Paper - add priority
+ // Paper start - use simpler thread pool that allows 1 thread
+ int i = Math.min(8, Math.max(Runtime.getRuntime().availableProcessors() - 2, 1));
+ i = Integer.getInteger("Paper.WorkerThreadCount", i);
@ -75,7 +75,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
} else {
- object = new ForkJoinPool(i, (forkjoinpool) -> {
- ForkJoinWorkerThread forkjoinworkerthread = new ForkJoinWorkerThread(forkjoinpool) {
+ object = new java.util.concurrent.ThreadPoolExecutor(i, i,0L, TimeUnit.MILLISECONDS, new java.util.concurrent.LinkedBlockingQueue<Runnable>(), ServerWorkerThread::new);
+ object = new java.util.concurrent.ThreadPoolExecutor(i, i,0L, TimeUnit.MILLISECONDS, new java.util.concurrent.LinkedBlockingQueue<Runnable>(), target -> new ServerWorkerThread(target, s, priorityModifier));
+ }
+ /*
protected void onTermination(Throwable throwable) {
@ -89,3 +89,11 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
return (ExecutorService) object;
}
@@ -0,0 +0,0 @@ public class SystemUtils {
});
}
+ public static void onThreadError(Thread thread, Throwable throwable) { a(thread, throwable); } // Paper - OBFHELPER
private static void a(Thread thread, Throwable throwable) {
c(throwable);
if (throwable instanceof CompletionException) {