PaperMC/patches/server/0680-Fix-GameProfileCache-concurrency.patch
Nassim Jahnke 275173e538
Updated Upstream (Bukkit/CraftBukkit)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
0c5d8709 SPIGOT-7400: Downgrade maven-resolver due to issues resolving certain depends
255c4fdb SPIGOT-7380: Add PlayerInteractEvent#getClickedPosition and ChiseledBookshelf#getSlot

CraftBukkit Changes:
b6b514b7e SPIGOT-7400: Downgrade maven-resolver due to issues resolving certain depends
fcff84de9 SPIGOT-7399: Revert null check in CraftMetaItem#safelyAdd
44a4b5649 SPIGOT-7380: Add PlayerInteractEvent#getClickedPosition and ChiseledBookshelf#getSlot
676969d01 SPIGOT-7389: Handle setting null items in ChiseledBookshelf Inventory
2023-06-18 13:18:11 +02:00

128 lines
6.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sat, 11 Jul 2020 05:09:28 -0700
Subject: [PATCH] Fix GameProfileCache concurrency
Separate lookup and state access locks prevent lookups
from stalling simple state access/write calls
diff --git a/src/main/java/net/minecraft/server/players/GameProfileCache.java b/src/main/java/net/minecraft/server/players/GameProfileCache.java
index 2456edc11b29a92b1648937cd3dd6a9a05706803..b48650c38751a925b83fb4c19ac02f87cb1bef6e 100644
--- a/src/main/java/net/minecraft/server/players/GameProfileCache.java
+++ b/src/main/java/net/minecraft/server/players/GameProfileCache.java
@@ -62,6 +62,11 @@ public class GameProfileCache {
@Nullable
private Executor executor;
+ // Paper start
+ protected final java.util.concurrent.locks.ReentrantLock stateLock = new java.util.concurrent.locks.ReentrantLock();
+ protected final java.util.concurrent.locks.ReentrantLock lookupLock = new java.util.concurrent.locks.ReentrantLock();
+ // Paper end
+
public GameProfileCache(GameProfileRepository profileRepository, File cacheFile) {
this.profileRepository = profileRepository;
this.file = cacheFile;
@@ -69,6 +74,7 @@ public class GameProfileCache {
}
private void safeAdd(GameProfileCache.GameProfileInfo entry) {
+ try { this.stateLock.lock(); // Paper - allow better concurrency
GameProfile gameprofile = entry.getProfile();
entry.setLastAccess(this.getNextOperation());
@@ -83,6 +89,7 @@ public class GameProfileCache {
if (uuid != null) {
this.profilesByUUID.put(uuid, entry);
}
+ } finally { this.stateLock.unlock(); } // Paper - allow better concurrency
}
@@ -138,17 +145,20 @@ public class GameProfileCache {
// Paper start
public @Nullable GameProfile getProfileIfCached(String name) {
+ try { this.stateLock.lock(); // Paper - allow better concurrency
GameProfileCache.GameProfileInfo entry = this.profilesByName.get(name.toLowerCase(Locale.ROOT));
if (entry == null) {
return null;
}
entry.setLastAccess(this.getNextOperation());
return entry.getProfile();
+ } finally { this.stateLock.unlock(); } // Paper - allow better concurrency
}
// Paper end
public Optional<GameProfile> get(String name) {
String s1 = name.toLowerCase(Locale.ROOT);
+ boolean stateLocked = true; try { this.stateLock.lock(); // Paper - allow better concurrency
GameProfileCache.GameProfileInfo usercache_usercacheentry = (GameProfileCache.GameProfileInfo) this.profilesByName.get(s1);
boolean flag = false;
@@ -164,8 +174,12 @@ public class GameProfileCache {
if (usercache_usercacheentry != null) {
usercache_usercacheentry.setLastAccess(this.getNextOperation());
optional = Optional.of(usercache_usercacheentry.getProfile());
+ stateLocked = false; this.stateLock.unlock(); // Paper - allow better concurrency
} else {
+ stateLocked = false; this.stateLock.unlock(); // Paper - allow better concurrency
+ try { this.lookupLock.lock(); // Paper - allow better concurrency
optional = GameProfileCache.lookupGameProfile(this.profileRepository, name); // Spigot - use correct case for offline players
+ } finally { this.lookupLock.unlock(); } // Paper - allow better concurrency
if (optional.isPresent()) {
this.add((GameProfile) optional.get());
flag = false;
@@ -177,6 +191,7 @@ public class GameProfileCache {
}
return optional;
+ } finally { if (stateLocked) { this.stateLock.unlock(); } } // Paper - allow better concurrency
}
public void getAsync(String username, Consumer<Optional<GameProfile>> consumer) {
@@ -203,6 +218,7 @@ public class GameProfileCache {
}
public Optional<GameProfile> get(UUID uuid) {
+ try { this.stateLock.lock(); // Paper - allow better concurrency
GameProfileCache.GameProfileInfo usercache_usercacheentry = (GameProfileCache.GameProfileInfo) this.profilesByUUID.get(uuid);
if (usercache_usercacheentry == null) {
@@ -211,6 +227,7 @@ public class GameProfileCache {
usercache_usercacheentry.setLastAccess(this.getNextOperation());
return Optional.of(usercache_usercacheentry.getProfile());
}
+ } finally { this.stateLock.unlock(); } // Paper - allow better concurrency
}
public void setExecutor(Executor executor) {
@@ -291,7 +308,7 @@ public class GameProfileCache {
JsonArray jsonarray = new JsonArray();
DateFormat dateformat = GameProfileCache.createDateFormat();
- this.getTopMRUProfiles(org.spigotmc.SpigotConfig.userCacheCap).forEach((usercache_usercacheentry) -> { // Spigot
+ this.listTopMRUProfiles(org.spigotmc.SpigotConfig.userCacheCap).forEach((usercache_usercacheentry) -> { // Spigot // Paper - allow better concurrency
jsonarray.add(GameProfileCache.writeGameProfile(usercache_usercacheentry, dateformat));
});
String s = this.gson.toJson(jsonarray);
@@ -332,8 +349,19 @@ public class GameProfileCache {
}
private Stream<GameProfileCache.GameProfileInfo> getTopMRUProfiles(int limit) {
- return ImmutableList.copyOf(this.profilesByUUID.values()).stream().sorted(Comparator.comparing(GameProfileCache.GameProfileInfo::getLastAccess).reversed()).limit((long) limit);
+ // Paper start - allow better concurrency
+ return this.listTopMRUProfiles(limit).stream();
+ }
+
+ private List<GameProfileCache.GameProfileInfo> listTopMRUProfiles(int limit) {
+ try {
+ this.stateLock.lock();
+ return this.profilesByUUID.values().stream().sorted(Comparator.comparing(GameProfileCache.GameProfileInfo::getLastAccess).reversed()).limit(limit).toList();
+ } finally {
+ this.stateLock.unlock();
+ }
}
+ // Paper end
private static JsonElement writeGameProfile(GameProfileCache.GameProfileInfo entry, DateFormat dateFormat) {
JsonObject jsonobject = new JsonObject();