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c5a10665b8
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.
86 lines
4.1 KiB
Diff
86 lines
4.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Mon, 16 May 2016 20:47:41 -0400
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Subject: [PATCH] Async GameProfileCache saving
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index f16ade2019e58a9374a550f58113313c118c2f2b..10d69b48158460e5739d1e41a83fcaeec819fac6 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -998,7 +998,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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} catch (java.lang.InterruptedException ignored) {} // Paper
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if (org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly) {
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MinecraftServer.LOGGER.info("Saving usercache.json");
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- this.getProfileCache().save();
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+ this.getProfileCache().save(false); // Paper - Perf: Async GameProfileCache saving
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}
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// Spigot end
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diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
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index 48107f8eb50483430053b990496862d71c9f8a3e..c1f41dcf49c75c3d69485c0e1ec821205438ed1e 100644
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--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
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+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
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@@ -270,7 +270,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
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}
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if (this.convertOldUsers()) {
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- this.getProfileCache().save();
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+ this.getProfileCache().save(false); // Paper - Perf: Async GameProfileCache saving
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}
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if (!OldUsersConverter.serverReadyAfterUserconversion(this)) {
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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 f6e290bf4480da51512f8a166459687dad1f6a07..5b219b5eee0c5958b80093c9223feeed0dec830b 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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@@ -117,7 +117,7 @@ public class GameProfileCache {
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GameProfileCache.GameProfileInfo usercache_usercacheentry = new GameProfileCache.GameProfileInfo(profile, date);
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this.safeAdd(usercache_usercacheentry);
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- if( !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly ) this.save(); // Spigot - skip saving if disabled
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+ if( !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly ) this.save(true); // Spigot - skip saving if disabled // Paper - Perf: Async GameProfileCache saving
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}
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private long getNextOperation() {
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@@ -150,7 +150,7 @@ public class GameProfileCache {
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}
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if (flag && !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly) { // Spigot - skip saving if disabled
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- this.save();
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+ this.save(true); // Paper - Perf: Async GameProfileCache saving
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}
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return optional;
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@@ -262,7 +262,7 @@ public class GameProfileCache {
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return list;
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}
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- public void save() {
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+ public void save(boolean asyncSave) { // Paper - Perf: Async GameProfileCache saving
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JsonArray jsonarray = new JsonArray();
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DateFormat dateformat = GameProfileCache.createDateFormat();
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@@ -270,6 +270,7 @@ public class GameProfileCache {
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jsonarray.add(GameProfileCache.writeGameProfile(usercache_usercacheentry, dateformat));
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});
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String s = this.gson.toJson(jsonarray);
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+ Runnable save = () -> { // Paper - Perf: Async GameProfileCache saving
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try {
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BufferedWriter bufferedwriter = Files.newWriter(this.file, StandardCharsets.UTF_8);
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@@ -294,6 +295,14 @@ public class GameProfileCache {
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} catch (IOException ioexception) {
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;
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}
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+ // Paper start - Perf: Async GameProfileCache saving
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+ };
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+ if (asyncSave) {
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+ io.papermc.paper.util.MCUtil.scheduleAsyncTask(save);
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+ } else {
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+ save.run();
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+ }
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+ // Paper end - Perf: Async GameProfileCache saving
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}
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