mirror of https://github.com/PaperMC/Paper.git
78 lines
4.6 KiB
Diff
78 lines
4.6 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 114f4017c4133042178c57d424f10079163835dd..aa52b271bd556a29f774fde375b713d0d187521b 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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@@ -89,6 +89,22 @@ public class Util {
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private static final ExecutorService BACKGROUND_EXECUTOR = makeExecutor("Main");
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private static final ExecutorService IO_POOL = makeIoExecutor("IO-Worker-", false);
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private static final ExecutorService DOWNLOAD_POOL = makeIoExecutor("Download-", true);
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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 DateTimeFormatter FILENAME_DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd_HH.mm.ss", Locale.ROOT);
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private static final int LINEAR_LOOKUP_THRESHOLD = 8;
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public static final long NANOS_PER_MILLI = 1000000L;
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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 09de1ca3802e97442bc090db0cc87fd833ad3a9f..9c500642eb2b59bf9aabd6b5d563e5fb15603056 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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@@ -169,7 +169,7 @@ public class GameProfileCache {
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} else {
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CompletableFuture<Optional<GameProfile>> completablefuture1 = 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);
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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 bffc770105800ba78c6d9bfb56ad9ad425f19910..92b770d10f34596ce52392a0db1ccd825108730b 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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@@ -80,7 +80,7 @@ public class SkullBlockEntity extends BlockEntity {
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} else {
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return Optional.empty();
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}
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- }, Util.backgroundExecutor());
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+ }, Util.PROFILE_EXECUTOR); // Paper - not a good idea to use BLOCKING OPERATIONS on the worldgen executor
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}
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@Override
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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 358af0121ce3d87a9f51da2bae0699034c1560b4..91e913f8652584ffab44c44d10c0e0c47707e261 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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@@ -122,7 +122,7 @@ 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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