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da9d110d5b
This patch does not appear to be doing anything useful, and may hide errors. Currently, the save logic does not run through this path either so it did not do anything. Additionally, properly implement support for handling RegionFileSizeException in Moonrise.
108 lines
5.8 KiB
Diff
108 lines
5.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: egg82 <phantom_zero@ymail.com>
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Date: Tue, 7 Aug 2018 01:24:23 -0600
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Subject: [PATCH] Use ConcurrentHashMap in JsonList
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This is specifically aimed at fixing #471
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Using a ConcurrentHashMap because thread safety
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The performance benefit of Map over ConcurrentMap is negligabe at best in this scenaio, as most operations will be get and not add or remove
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Even without considering the use-case the benefits are still negligable
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Original ideas for the system included an expiration policy and/or handler
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The simpler solution was to use a computeIfPresent in the get method
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This will simultaneously have an O(1) lookup time and automatically expire any values
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Since the get method (nor other similar methods) don't seem to have a critical need to flush the map to disk at any of these points further processing is simply wasteful
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Meaning the original function expired values unrelated to the current value without actually having any explicit need to
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The h method was heavily modified to be much more efficient in its processing
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Also instead of being called on every get, it's now called just before a save
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This will eliminate stale values being flushed to disk
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Modified isEmpty to use the isEmpty() method instead of the slightly confusing size() < 1
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The point of this is readability, but does have a side-benefit of a small microptimization
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diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
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index 06338f5fa552a390db05a90b5cc796a70104ada0..8bb2749f751839f7dfd8fb62f676bd54ec8b1b09 100644
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--- a/src/main/java/net/minecraft/server/players/PlayerList.java
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+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
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@@ -593,7 +593,7 @@ public abstract class PlayerList {
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} else if (!this.isWhiteListed(gameprofile, event)) { // Paper - ProfileWhitelistVerifyEvent
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//ichatmutablecomponent = Component.translatable("multiplayer.disconnect.not_whitelisted"); // Paper
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//event.disallow(PlayerLoginEvent.Result.KICK_WHITELIST, net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer.legacySection().deserialize(org.spigotmc.SpigotConfig.whitelistMessage)); // Spigot // Paper - Adventure - moved to isWhitelisted
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- } else if (this.getIpBans().isBanned(socketaddress) && !this.getIpBans().get(socketaddress).hasExpired()) {
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+ } else if (this.getIpBans().isBanned(socketaddress) && getIpBans().get(socketaddress) != null && !this.getIpBans().get(socketaddress).hasExpired()) { // Paper - fix NPE with temp ip bans
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IpBanListEntry ipbanentry = this.ipBans.get(socketaddress);
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ichatmutablecomponent = Component.translatable("multiplayer.disconnect.banned_ip.reason", ipbanentry.getReason());
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diff --git a/src/main/java/net/minecraft/server/players/StoredUserList.java b/src/main/java/net/minecraft/server/players/StoredUserList.java
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index 7e81907bfdca225413e8191e37969990e6f4cf2c..c038da20b76c0b7b1c18471b20be01e849d29f3a 100644
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--- a/src/main/java/net/minecraft/server/players/StoredUserList.java
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+++ b/src/main/java/net/minecraft/server/players/StoredUserList.java
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@@ -30,7 +30,7 @@ public abstract class StoredUserList<K, V extends StoredUserEntry<K>> {
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private static final Logger LOGGER = LogUtils.getLogger();
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private static final Gson GSON = (new GsonBuilder()).setPrettyPrinting().create();
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private final File file;
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- private final Map<String, V> map = Maps.newHashMap();
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+ private final Map<String, V> map = Maps.newConcurrentMap(); // Paper - Use ConcurrentHashMap in JsonList
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public StoredUserList(File file) {
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this.file = file;
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@@ -53,8 +53,11 @@ public abstract class StoredUserList<K, V extends StoredUserEntry<K>> {
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@Nullable
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public V get(K key) {
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- this.removeExpired();
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- return (V) this.map.get(this.getKeyForUser(key)); // CraftBukkit - fix decompile error
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+ // Paper start - Use ConcurrentHashMap in JsonList
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+ return (V) this.map.computeIfPresent(this.getKeyForUser(key), (k, v) -> {
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+ return v.hasExpired() ? null : v;
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+ });
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+ // Paper end - Use ConcurrentHashMap in JsonList
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}
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public void remove(K key) {
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@@ -77,7 +80,7 @@ public abstract class StoredUserList<K, V extends StoredUserEntry<K>> {
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}
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public boolean isEmpty() {
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- return this.map.size() < 1;
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+ return this.map.isEmpty(); // Paper - Use ConcurrentHashMap in JsonList
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}
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protected String getKeyForUser(K profile) {
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@@ -90,25 +93,7 @@ public abstract class StoredUserList<K, V extends StoredUserEntry<K>> {
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}
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private void removeExpired() {
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- List<K> list = Lists.newArrayList();
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- Iterator iterator = this.map.values().iterator();
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-
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- while (iterator.hasNext()) {
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- V v0 = (V) iterator.next(); // CraftBukkit - decompile error
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-
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- if (v0.hasExpired()) {
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- list.add(v0.getUser());
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- }
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- }
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-
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- iterator = list.iterator();
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-
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- while (iterator.hasNext()) {
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- K k0 = (K) iterator.next(); // CraftBukkit - decompile error
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-
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- this.map.remove(this.getKeyForUser(k0));
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- }
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-
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+ this.map.values().removeIf(StoredUserEntry::hasExpired); // Paper - Use ConcurrentHashMap in JsonList
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}
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protected abstract StoredUserEntry<K> createEntry(JsonObject json);
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@@ -118,6 +103,7 @@ public abstract class StoredUserList<K, V extends StoredUserEntry<K>> {
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}
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public void save() throws IOException {
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+ this.removeExpired(); // Paper - remove expired values before saving
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JsonArray jsonarray = new JsonArray();
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Stream<JsonObject> stream = this.map.values().stream().map((jsonlistentry) -> { // CraftBukkit - decompile error
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JsonObject jsonobject = new JsonObject();
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