papermc/Spigot-API-Patches/0148-Performance-Concurrency-Improvements-to-Permissions.patch
Shane Freeder 0976d52bbd Updated Upstream (Bukkit/CraftBukkit/Spigot)
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

Please note that this build includes changes to meet upstreams
requirements for nullability annotations. While we aim for a level of
accuracy, these might not be 100% correct, if there are any issues,
please speak to us on discord, or open an issue on the tracker to
discuss.

Bukkit Changes:
9a6a1de3 Remove nullability annotations from enum constructors
3f0591ea SPIGOT-2540: Add nullability annotations to entire Bukkit API

CraftBukkit Changes:
8d8475fc SPIGOT-4666: Force parameter in HumanEntity#sleep
8b1588e2 Fix ExplosionPrimeEvent#setFire not working with EnderCrystals
39a287b7 Don't ignore newlines in PlayerListHeader/Footer

Spigot Changes:
cf694d87 Add nullability annotations
2019-03-20 00:31:18 +00:00

115 lines
5 KiB
Diff

From 70bd0d4e37da61457d7cf5e738c86df89660c2c7 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 13 Sep 2018 20:51:50 -0400
Subject: [PATCH] Performance & Concurrency Improvements to Permissions
Modifying of permissions was only half protected, enabling concurrency
issues to occur if permissions were modified async.
While no plugin really should be doing that, modifying operations
are not heavily called, so they are safe to add synchronization to.
Now, all modification API's will be synchronized ensuring safety.
Additionally, hasPermission was victim to a common java newbie mistake
of calling if (containsKey(k)) return get(k), resulting in 2 map lookups.
Optimized it to simply be a single get call cutting permission map
lookups in half.
diff --git a/src/main/java/org/bukkit/permissions/PermissibleBase.java b/src/main/java/org/bukkit/permissions/PermissibleBase.java
index 27c14c0f5..72fff64e0 100644
--- a/src/main/java/org/bukkit/permissions/PermissibleBase.java
+++ b/src/main/java/org/bukkit/permissions/PermissibleBase.java
@@ -70,8 +70,11 @@ public class PermissibleBase implements Permissible {
String name = inName.toLowerCase(java.util.Locale.ENGLISH);
- if (isPermissionSet(name)) {
- return permissions.get(name).getValue();
+ // Paper start
+ PermissionAttachmentInfo info = permissions.get(name);
+ if (info != null) {
+ return info.getValue();
+ // Paper end
} else {
Permission perm = Bukkit.getServer().getPluginManager().getPermission(name);
@@ -90,14 +93,17 @@ public class PermissibleBase implements Permissible {
String name = perm.getName().toLowerCase(java.util.Locale.ENGLISH);
- if (isPermissionSet(name)) {
- return permissions.get(name).getValue();
+ // Paper start
+ PermissionAttachmentInfo info = permissions.get(name);
+ if (info != null) {
+ return info.getValue();
}
+ // Paper end
return perm.getDefault().getValue(isOp());
}
@NotNull
- public PermissionAttachment addAttachment(@NotNull Plugin plugin, @NotNull String name, boolean value) {
+ public synchronized PermissionAttachment addAttachment(@NotNull Plugin plugin, @NotNull String name, boolean value) { // Paper - synchronized
if (name == null) {
throw new IllegalArgumentException("Permission name cannot be null");
} else if (plugin == null) {
@@ -115,7 +121,7 @@ public class PermissibleBase implements Permissible {
}
@NotNull
- public PermissionAttachment addAttachment(@NotNull Plugin plugin) {
+ public synchronized PermissionAttachment addAttachment(@NotNull Plugin plugin) { // Paper - synchronized
if (plugin == null) {
throw new IllegalArgumentException("Plugin cannot be null");
} else if (!plugin.isEnabled()) {
@@ -130,7 +136,7 @@ public class PermissibleBase implements Permissible {
return result;
}
- public void removeAttachment(@NotNull PermissionAttachment attachment) {
+ public synchronized void removeAttachment(@NotNull PermissionAttachment attachment) { // Paper - synchronized
if (attachment == null) {
throw new IllegalArgumentException("Attachment cannot be null");
}
@@ -149,7 +155,7 @@ public class PermissibleBase implements Permissible {
}
}
- public void recalculatePermissions() {
+ public synchronized void recalculatePermissions() { // Paper - synchronized
clearPermissions();
Set<Permission> defaults = Bukkit.getServer().getPluginManager().getDefaultPermissions(isOp());
Bukkit.getServer().getPluginManager().subscribeToDefaultPerms(isOp(), parent);
@@ -197,7 +203,7 @@ public class PermissibleBase implements Permissible {
}
@Nullable
- public PermissionAttachment addAttachment(@NotNull Plugin plugin, @NotNull String name, boolean value, int ticks) {
+ public synchronized PermissionAttachment addAttachment(@NotNull Plugin plugin, @NotNull String name, boolean value, int ticks) { // Paper
if (name == null) {
throw new IllegalArgumentException("Permission name cannot be null");
} else if (plugin == null) {
@@ -216,7 +222,7 @@ public class PermissibleBase implements Permissible {
}
@Nullable
- public PermissionAttachment addAttachment(@NotNull Plugin plugin, int ticks) {
+ public synchronized PermissionAttachment addAttachment(@NotNull Plugin plugin, int ticks) { // Paper - synchronized
if (plugin == null) {
throw new IllegalArgumentException("Plugin cannot be null");
} else if (!plugin.isEnabled()) {
@@ -235,7 +241,7 @@ public class PermissibleBase implements Permissible {
}
@NotNull
- public Set<PermissionAttachmentInfo> getEffectivePermissions() {
+ public synchronized Set<PermissionAttachmentInfo> getEffectivePermissions() { // Paper - synchronized
return new HashSet<PermissionAttachmentInfo>(permissions.values());
}
--
2.21.0