geforkt von Mirrors/Paper
654b792caf
Upstream has released updates that appears to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing CraftBukkit Changes:a339310c
#755: Fix NPE when calling getInventory() for virtual EnderChests2577f9bf
Increase outdated build delay1dabfdc8
#754: Fix pre-1.16 serialized SkullMeta being broken on 1.16+, losing textures
137 Zeilen
6.4 KiB
Diff
137 Zeilen
6.4 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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Finally, added a couple obfhelpers for the modified code
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diff --git a/src/main/java/net/minecraft/server/JsonList.java b/src/main/java/net/minecraft/server/JsonList.java
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index 5b01e4edb3c0f8bc785b70128cbe31b14356e4fb..9213bfb78e92b838189161045e3945588251b486 100644
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--- a/src/main/java/net/minecraft/server/JsonList.java
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+++ b/src/main/java/net/minecraft/server/JsonList.java
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@@ -12,6 +12,8 @@ import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.IOException;
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+import java.lang.reflect.ParameterizedType; // Paper
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+import java.lang.reflect.Type; // Paper
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import java.nio.charset.StandardCharsets;
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import java.util.Collection;
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import java.util.Iterator;
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@@ -26,7 +28,22 @@ public abstract class JsonList<K, V extends JsonListEntry<K>> {
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protected static final Logger LOGGER = LogManager.getLogger();
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private static final Gson b = (new GsonBuilder()).setPrettyPrinting().create();
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private final File c;
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- private final Map<String, V> d = Maps.newHashMap();
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+ // Paper - replace HashMap is ConcurrentHashMap
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+ private final Map<String, V> d = Maps.newConcurrentMap(); private final Map<String, V> getBackingMap() { return this.d; } // Paper - OBFHELPER
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+ private boolean e = true;
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+ private static final ParameterizedType f = new ParameterizedType() {
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+ public Type[] getActualTypeArguments() {
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+ return new Type[]{JsonListEntry.class};
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+ }
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+
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+ public Type getRawType() {
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+ return List.class;
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+ }
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+
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+ public Type getOwnerType() {
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+ return null;
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+ }
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+ };
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public JsonList(File file) {
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this.c = file;
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@@ -49,8 +66,13 @@ public abstract class JsonList<K, V extends JsonListEntry<K>> {
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@Nullable
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public V get(K k0) {
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- this.g();
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- return (V) this.d.get(this.a(k0)); // CraftBukkit - fix decompile error
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+ // Paper start
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+ // this.g();
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+ // return (V) this.d.get(this.a(k0)); // CraftBukkit - fix decompile error
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+ return (V) this.getBackingMap().computeIfPresent(this.getMappingKey(k0), (k, v) -> {
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+ return v.hasExpired() ? null : v;
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+ });
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+ // Paper end
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}
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public void remove(K k0) {
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@@ -79,9 +101,11 @@ public abstract class JsonList<K, V extends JsonListEntry<K>> {
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// CraftBukkit end
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public boolean isEmpty() {
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- return this.d.size() < 1;
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+ // return this.d.size() < 1; // Paper
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+ return this.getBackingMap().isEmpty(); // Paper - readability is the goal. As an aside, isEmpty() uses only sumCount() and a comparison. size() uses sumCount(), casts, and boolean logic
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}
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+ protected final String getMappingKey(K k0) { return a(k0); } // Paper - OBFHELPER
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protected String a(K k0) {
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return k0.toString();
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}
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@@ -90,8 +114,9 @@ public abstract class JsonList<K, V extends JsonListEntry<K>> {
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return this.d.containsKey(this.a(k0));
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}
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+ private void removeStaleEntries() { g(); } // Paper - OBFHELPER
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private void g() {
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- List<K> list = Lists.newArrayList();
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+ /*List<K> list = Lists.newArrayList();
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Iterator iterator = this.d.values().iterator();
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while (iterator.hasNext()) {
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@@ -108,8 +133,10 @@ public abstract class JsonList<K, V extends JsonListEntry<K>> {
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K k0 = (K) iterator.next(); // CraftBukkit - decompile error
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this.d.remove(this.a(k0));
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- }
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+ }*/
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+ this.getBackingMap().values().removeIf(JsonListEntry::hasExpired);
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+ // Paper end
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}
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protected abstract JsonListEntry<K> a(JsonObject jsonobject);
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@@ -119,6 +146,7 @@ public abstract class JsonList<K, V extends JsonListEntry<K>> {
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}
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public void save() throws IOException {
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+ this.removeStaleEntries(); // Paper - remove expired values before saving
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JsonArray jsonarray = new JsonArray();
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this.d.values().stream().map((jsonlistentry) -> {
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diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
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index df8a92b082139c84afc32cf02541faa82c914d4f..bc31e882e77f5b8657107db1e3a830df4cf561e1 100644
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--- a/src/main/java/net/minecraft/server/PlayerList.java
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+++ b/src/main/java/net/minecraft/server/PlayerList.java
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@@ -543,7 +543,7 @@ public abstract class PlayerList {
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} else if (!this.isWhitelisted(gameprofile, event)) { // Paper
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chatmessage = new ChatMessage("multiplayer.disconnect.not_whitelisted");
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//event.disallow(PlayerLoginEvent.Result.KICK_WHITELIST, org.spigotmc.SpigotConfig.whitelistMessage); // Spigot // Paper - moved to isWhitelisted
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- } else if (getIPBans().isBanned(socketaddress) && !getIPBans().get(socketaddress).hasExpired()) {
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+ } else if (getIPBans().isBanned(socketaddress) && getIPBans().get(socketaddress) != null && !getIPBans().get(socketaddress).hasExpired()) { // Paper - fix NPE with temp ip bans
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IpBanEntry ipbanentry = this.l.get(socketaddress);
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chatmessage = new ChatMessage("multiplayer.disconnect.banned_ip.reason", new Object[]{ipbanentry.getReason()});
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