78 lines
5.2 KiB
Diff
78 lines
5.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Sun, 8 Aug 2021 16:26:46 -0700
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Subject: [PATCH] Do not submit profile lookups to worldgen threads
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They block. On network I/O.
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If enough tasks are submitted the server will eventually stall
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out due to a sync load, as the worldgen threads will be
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stalling on profile lookups.
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diff --git a/src/main/java/net/minecraft/Util.java b/src/main/java/net/minecraft/Util.java
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index 168ab805ecc48dd55db90eb7fe1c56fda3f2776c..336a26733b5bf73455f8ec10347c1e08b8e866f7 100644
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--- a/src/main/java/net/minecraft/Util.java
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+++ b/src/main/java/net/minecraft/Util.java
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@@ -81,6 +81,22 @@ public class Util {
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private static final AtomicInteger WORKER_COUNT = new AtomicInteger(1);
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private static final ExecutorService BOOTSTRAP_EXECUTOR = makeExecutor("Bootstrap");
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private static final ExecutorService BACKGROUND_EXECUTOR = makeExecutor("Main");
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+ // Paper start - don't submit BLOCKING PROFILE LOOKUPS to the world gen thread
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+ public static final ExecutorService PROFILE_EXECUTOR = Executors.newFixedThreadPool(2, new java.util.concurrent.ThreadFactory() {
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+
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+ private final AtomicInteger count = new AtomicInteger();
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+
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+ @Override
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+ public Thread newThread(Runnable run) {
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+ Thread ret = new Thread(run);
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+ ret.setName("Profile Lookup Executor #" + this.count.getAndIncrement());
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+ ret.setUncaughtExceptionHandler((Thread thread, Throwable throwable) -> {
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+ LOGGER.error("Uncaught exception in thread " + thread.getName(), throwable);
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+ });
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+ return ret;
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+ }
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+ });
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+ // Paper end - don't submit BLOCKING PROFILE LOOKUPS to the world gen thread
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private static final ExecutorService IO_POOL = makeIoExecutor();
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private static final DateTimeFormatter FILENAME_DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd_HH.mm.ss", Locale.ROOT);
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public static TimeSource.NanoTimeSource timeSource = System::nanoTime;
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diff --git a/src/main/java/net/minecraft/server/players/GameProfileCache.java b/src/main/java/net/minecraft/server/players/GameProfileCache.java
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index 376845f5a25a348e76193fac5c047b0ba2fb080f..2a0cf0a8a79c09566c598197fc6f8c447d4bbd72 100644
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--- a/src/main/java/net/minecraft/server/players/GameProfileCache.java
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+++ b/src/main/java/net/minecraft/server/players/GameProfileCache.java
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@@ -181,7 +181,7 @@ public class GameProfileCache {
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} else {
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this.requests.put(username, CompletableFuture.supplyAsync(() -> {
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return this.get(username);
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- }, Util.backgroundExecutor()).whenCompleteAsync((optional, throwable) -> {
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+ }, Util.PROFILE_EXECUTOR).whenCompleteAsync((optional, throwable) -> { // Paper - not a good idea to use BLOCKING OPERATIONS on the worldgen executor
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this.requests.remove(username);
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}, this.executor).whenCompleteAsync((optional, throwable) -> {
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consumer.accept(optional);
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diff --git a/src/main/java/net/minecraft/world/level/block/entity/SkullBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/SkullBlockEntity.java
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index 0c7e29b589ab106013d979a20edc415b4b32a677..c5d5d90d10b30f30d1262367b3d75df43fbdb231 100644
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--- a/src/main/java/net/minecraft/world/level/block/entity/SkullBlockEntity.java
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+++ b/src/main/java/net/minecraft/world/level/block/entity/SkullBlockEntity.java
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@@ -120,7 +120,7 @@ public class SkullBlockEntity extends BlockEntity {
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public static void updateGameprofile(@Nullable GameProfile owner, Consumer<GameProfile> callback) {
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if (owner != null && !StringUtil.isNullOrEmpty(owner.getName()) && (!owner.isComplete() || !owner.getProperties().containsKey("textures")) && profileCache != null && sessionService != null) {
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profileCache.getAsync(owner.getName(), (profile) -> {
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- Util.backgroundExecutor().execute(() -> {
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+ Util.PROFILE_EXECUTOR.execute(() -> { // Paper - not a good idea to use BLOCKING OPERATIONS on the worldgen executor
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Util.ifElse(profile, (profilex) -> {
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Property property = Iterables.getFirst(profilex.getProperties().get("textures"), (Property)null);
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if (property == null) {
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diff --git a/src/main/java/org/bukkit/craftbukkit/profile/CraftPlayerProfile.java b/src/main/java/org/bukkit/craftbukkit/profile/CraftPlayerProfile.java
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index 2d49bd6f3f017d43dfaa23cedf35040b64bcdcf8..9edc5e73819e0b55372f77c5e292eece74d837c7 100644
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--- a/src/main/java/org/bukkit/craftbukkit/profile/CraftPlayerProfile.java
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+++ b/src/main/java/org/bukkit/craftbukkit/profile/CraftPlayerProfile.java
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@@ -121,7 +121,7 @@ public final class CraftPlayerProfile implements PlayerProfile {
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@Override
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public CompletableFuture<PlayerProfile> update() {
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- return CompletableFuture.supplyAsync(this::getUpdatedProfile, Util.backgroundExecutor());
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+ return CompletableFuture.supplyAsync(this::getUpdatedProfile, Util.PROFILE_EXECUTOR); // Paper - not a good idea to use BLOCKING OPERATIONS on the worldgen executor
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}
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private CraftPlayerProfile getUpdatedProfile() {
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