57dd397155
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 Bukkit Changes: b999860d SPIGOT-2304: Add LootGenerateEvent CraftBukkit Changes: 77fd87e4 SPIGOT-2304: Implement LootGenerateEvent a1a705ee SPIGOT-5566: Doused campfires & fires should call EntityChangeBlockEvent 41712edd SPIGOT-5707: PersistentDataHolder not Persistent on API dropped Item
94 lines
4.3 KiB
Diff
94 lines
4.3 KiB
Diff
From da9edaf6bd9b18c3772b3fda4d338ffbc4453cad Mon Sep 17 00:00:00 2001
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From: crast <contact@jamescrasta.com>
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Date: Sat, 1 Jun 2013 13:52:30 -0600
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Subject: [PATCH] Reduce thread synchronization in MetadataStoreBase
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Use ConcurrentHashMap to allow thread-safe access methods and very
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limited synchronized portions to allow much higher concurrency in
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MetadataStore as well as far less locking, especially on reads
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diff --git a/src/main/java/org/bukkit/metadata/MetadataStoreBase.java b/src/main/java/org/bukkit/metadata/MetadataStoreBase.java
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index baf850226..d363d517c 100644
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--- a/src/main/java/org/bukkit/metadata/MetadataStoreBase.java
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+++ b/src/main/java/org/bukkit/metadata/MetadataStoreBase.java
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@@ -12,7 +12,7 @@ import org.bukkit.plugin.Plugin;
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import org.jetbrains.annotations.NotNull;
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public abstract class MetadataStoreBase<T> {
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- private Map<String, Map<Plugin, MetadataValue>> metadataMap = new HashMap<String, Map<Plugin, MetadataValue>>();
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+ private Map<String, Map<Plugin, MetadataValue>> metadataMap = new java.util.concurrent.ConcurrentHashMap<String, Map<Plugin, MetadataValue>>(); // Paper
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/**
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* Adds a metadata value to an object. Each metadata value is owned by a
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@@ -46,7 +46,9 @@ public abstract class MetadataStoreBase<T> {
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entry = new WeakHashMap<Plugin, MetadataValue>(1);
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metadataMap.put(key, entry);
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}
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- entry.put(owningPlugin, newMetadataValue);
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+ synchronized (entry) {
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+ entry.put(owningPlugin, newMetadataValue);
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+ }
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}
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/**
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@@ -60,10 +62,11 @@ public abstract class MetadataStoreBase<T> {
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* @see MetadataStore#getMetadata(Object, String)
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*/
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@NotNull
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- public synchronized List<MetadataValue> getMetadata(@NotNull T subject, @NotNull String metadataKey) {
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+ public List<MetadataValue> getMetadata(@NotNull T subject, @NotNull String metadataKey) { // Paper
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String key = disambiguate(subject, metadataKey);
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- if (metadataMap.containsKey(key)) {
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- Collection<MetadataValue> values = metadataMap.get(key).values();
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+ Map<Plugin, MetadataValue> entry = metadataMap.get(key);
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+ if (entry != null) {
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+ Collection<MetadataValue> values = entry.values();
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return Collections.unmodifiableList(new ArrayList<MetadataValue>(values));
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} else {
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return Collections.emptyList();
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@@ -78,7 +81,7 @@ public abstract class MetadataStoreBase<T> {
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* @param metadataKey the unique metadata key being queried.
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* @return the existence of the metadataKey within subject.
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*/
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- public synchronized boolean hasMetadata(@NotNull T subject, @NotNull String metadataKey) {
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+ public boolean hasMetadata(@NotNull T subject, @NotNull String metadataKey) { // Paper
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String key = disambiguate(subject, metadataKey);
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return metadataMap.containsKey(key);
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}
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@@ -94,17 +97,18 @@ public abstract class MetadataStoreBase<T> {
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* @see MetadataStore#removeMetadata(Object, String,
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* org.bukkit.plugin.Plugin)
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*/
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- public synchronized void removeMetadata(@NotNull T subject, @NotNull String metadataKey, @NotNull Plugin owningPlugin) {
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+ public void removeMetadata(@NotNull T subject, @NotNull String metadataKey, @NotNull Plugin owningPlugin) { // Paper
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Validate.notNull(owningPlugin, "Plugin cannot be null");
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String key = disambiguate(subject, metadataKey);
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Map<Plugin, MetadataValue> entry = metadataMap.get(key);
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if (entry == null) {
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return;
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}
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-
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- entry.remove(owningPlugin);
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- if (entry.isEmpty()) {
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- metadataMap.remove(key);
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+ synchronized (entry) {
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+ entry.remove(owningPlugin);
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+ if (entry.isEmpty()) {
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+ metadataMap.remove(key);
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+ }
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}
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}
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@@ -117,7 +121,7 @@ public abstract class MetadataStoreBase<T> {
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* @throws IllegalArgumentException If plugin is null
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* @see MetadataStore#invalidateAll(org.bukkit.plugin.Plugin)
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*/
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- public synchronized void invalidateAll(@NotNull Plugin owningPlugin) {
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+ public void invalidateAll(@NotNull Plugin owningPlugin) { // Paper
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Validate.notNull(owningPlugin, "Plugin cannot be null");
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for (Map<Plugin, MetadataValue> values : metadataMap.values()) {
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if (values.containsKey(owningPlugin)) {
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--
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2.26.2
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