papermc/Spigot-Server-Patches/0100-Optimize-UserCache-Thread-Safe.patch
Aikar 014b7f115d
Current non compilable status of all patches - THIS IS NOT READY
THERE IS STILL NO ETA. GOBLINS WILL EAT YOU.
2020-06-26 02:01:05 -04:00

99 lines
4.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 16 May 2016 20:47:41 -0400
Subject: [PATCH] Optimize UserCache / Thread Safe
Because Techable keeps complaining about how this isn't thread safe,
easier to do this than replace the entire thing.
Additionally, move Saving of the User cache to be done async, incase
the user never changed the default setting for Spigot's save on stop only.
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index f020b087599abe370b9da2381be4e6fabf94243a..9c9dc07a3b6dbfc5c4e0abc9a094de7230c34452 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -789,7 +789,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
} catch (java.lang.InterruptedException ignored) {} // Paper
if (org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly) {
LOGGER.info("Saving usercache.json");
- this.getUserCache().c();
+ this.getUserCache().c(false); // Paper
}
// Spigot end
diff --git a/src/main/java/net/minecraft/server/UserCache.java b/src/main/java/net/minecraft/server/UserCache.java
index b211609995b95c26317995f4d776d21ab58d6c0e..4d3cbe3e517a75269d5c9cdd7f3751b81daee1c2 100644
--- a/src/main/java/net/minecraft/server/UserCache.java
+++ b/src/main/java/net/minecraft/server/UserCache.java
@@ -43,8 +43,8 @@ public class UserCache {
public static final SimpleDateFormat a = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z");
private static boolean c;
- private final Map<String, UserCache.UserCacheEntry> d = Maps.newHashMap();
- private final Map<UUID, UserCache.UserCacheEntry> e = Maps.newHashMap();
+ private final Map<String, UserCache.UserCacheEntry> d = new java.util.concurrent.ConcurrentHashMap<>(); // Paper
+ private final Map<UUID, UserCache.UserCacheEntry> e = new java.util.concurrent.ConcurrentHashMap<>(); // Paper
private final Deque<GameProfile> f = new java.util.concurrent.LinkedBlockingDeque<GameProfile>(); // CraftBukkit
private final GameProfileRepository g;
protected final Gson b;
@@ -97,7 +97,7 @@ public class UserCache {
this.a(gameprofile, (Date) null);
}
- private void a(GameProfile gameprofile, Date date) {
+ private synchronized void a(GameProfile gameprofile, Date date) { // Paper - synchronize
UUID uuid = gameprofile.getId();
if (date == null) {
@@ -110,8 +110,9 @@ public class UserCache {
UserCache.UserCacheEntry usercache_usercacheentry = new UserCache.UserCacheEntry(gameprofile, date);
- if (this.e.containsKey(uuid)) {
+ //if (this.e.containsKey(uuid)) { // Paper
UserCache.UserCacheEntry usercache_usercacheentry1 = (UserCache.UserCacheEntry) this.e.get(uuid);
+ if (usercache_usercacheentry1 != null) { // Paper
this.d.remove(usercache_usercacheentry1.a().getName().toLowerCase(Locale.ROOT));
this.f.remove(gameprofile);
@@ -124,7 +125,7 @@ public class UserCache {
}
@Nullable
- public GameProfile getProfile(String s) {
+ public synchronized GameProfile getProfile(String s) { // Paper - synchronize
String s1 = s.toLowerCase(Locale.ROOT);
UserCache.UserCacheEntry usercache_usercacheentry = (UserCache.UserCacheEntry) this.d.get(s1);
@@ -209,8 +210,15 @@ public class UserCache {
}
+ // Paper start
public void c() {
+ c(true);
+ }
+ public void c(boolean asyncSave) {
+ // Paper end
String s = this.b.toJson(this.a(org.spigotmc.SpigotConfig.userCacheCap));
+ Runnable save = () -> {
+
BufferedWriter bufferedwriter = null;
try {
@@ -224,6 +232,14 @@ public class UserCache {
} finally {
IOUtils.closeQuietly(bufferedwriter);
}
+ // Paper start
+ };
+ if (asyncSave) {
+ MCUtil.scheduleAsyncTask(save);
+ } else {
+ save.run();
+ }
+ // Paper end
}