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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-12-15 19:10:09 +01:00
Paper/patches/server/0097-Async-GameProfileCache-saving.patch
Bjarne Koll c5a10665b8
Remove wall-time / unused skip tick protection (#11412)
Spigot still maintains some partial implementation of "tick skipping", a
practice in which the MinecraftServer.currentTick field is updated not
by an increment of one per actual tick, but instead set to
System.currentTimeMillis() / 50. This behaviour means that the tracked
tick may "skip" a tick value in case a previous tick took more than the
expected 50ms.

To compensate for this in important paths, spigot/craftbukkit
implements "wall-time". Instead of incrementing/decrementing ticks on
block entities/entities by one for each call to their tick() method,
they instead increment/decrement important values, like
an ItemEntity's age or pickupDelay, by the difference of
`currentTick - lastTick`, where `lastTick` is the value of
`currentTick` during the last tick() call.

These "fixes" however do not play nicely with minecraft's simulation
distance as entities/block entities implementing the above behaviour
would "catch up" their values when moving from a non-ticking chunk to a
ticking one as their `lastTick` value remains stuck on the last tick in
a ticking chunk and hence lead to a large "catch up" once ticked again.

Paper completely removes the "tick skipping" behaviour (See patch
"Further-improve-server-tick-loop"), making the above precautions
completely unnecessary, which also rids paper of the previous described
incompatibility with non-ticking chunks.
2024-09-19 16:36:07 +02:00

87 Zeilen
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] Async GameProfileCache saving
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index f16ade2019e58a9374a550f58113313c118c2f2b..10d69b48158460e5739d1e41a83fcaeec819fac6 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -998,7 +998,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
} catch (java.lang.InterruptedException ignored) {} // Paper
if (org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly) {
MinecraftServer.LOGGER.info("Saving usercache.json");
- this.getProfileCache().save();
+ this.getProfileCache().save(false); // Paper - Perf: Async GameProfileCache saving
}
// Spigot end
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
index 48107f8eb50483430053b990496862d71c9f8a3e..c1f41dcf49c75c3d69485c0e1ec821205438ed1e 100644
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
@@ -270,7 +270,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
}
if (this.convertOldUsers()) {
- this.getProfileCache().save();
+ this.getProfileCache().save(false); // Paper - Perf: Async GameProfileCache saving
}
if (!OldUsersConverter.serverReadyAfterUserconversion(this)) {
diff --git a/src/main/java/net/minecraft/server/players/GameProfileCache.java b/src/main/java/net/minecraft/server/players/GameProfileCache.java
index f6e290bf4480da51512f8a166459687dad1f6a07..5b219b5eee0c5958b80093c9223feeed0dec830b 100644
--- a/src/main/java/net/minecraft/server/players/GameProfileCache.java
+++ b/src/main/java/net/minecraft/server/players/GameProfileCache.java
@@ -117,7 +117,7 @@ public class GameProfileCache {
GameProfileCache.GameProfileInfo usercache_usercacheentry = new GameProfileCache.GameProfileInfo(profile, date);
this.safeAdd(usercache_usercacheentry);
- if( !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly ) this.save(); // Spigot - skip saving if disabled
+ if( !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly ) this.save(true); // Spigot - skip saving if disabled // Paper - Perf: Async GameProfileCache saving
}
private long getNextOperation() {
@@ -150,7 +150,7 @@ public class GameProfileCache {
}
if (flag && !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly) { // Spigot - skip saving if disabled
- this.save();
+ this.save(true); // Paper - Perf: Async GameProfileCache saving
}
return optional;
@@ -262,7 +262,7 @@ public class GameProfileCache {
return list;
}
- public void save() {
+ public void save(boolean asyncSave) { // Paper - Perf: Async GameProfileCache saving
JsonArray jsonarray = new JsonArray();
DateFormat dateformat = GameProfileCache.createDateFormat();
@@ -270,6 +270,7 @@ public class GameProfileCache {
jsonarray.add(GameProfileCache.writeGameProfile(usercache_usercacheentry, dateformat));
});
String s = this.gson.toJson(jsonarray);
+ Runnable save = () -> { // Paper - Perf: Async GameProfileCache saving
try {
BufferedWriter bufferedwriter = Files.newWriter(this.file, StandardCharsets.UTF_8);
@@ -294,6 +295,14 @@ public class GameProfileCache {
} catch (IOException ioexception) {
;
}
+ // Paper start - Perf: Async GameProfileCache saving
+ };
+ if (asyncSave) {
+ io.papermc.paper.util.MCUtil.scheduleAsyncTask(save);
+ } else {
+ save.run();
+ }
+ // Paper end - Perf: Async GameProfileCache saving
}