diff options
Diffstat (limited to 'patches/api/0152-Performance-Concurrency-Improvements-to-Permissions.patch')
-rw-r--r-- | patches/api/0152-Performance-Concurrency-Improvements-to-Permissions.patch | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/patches/api/0152-Performance-Concurrency-Improvements-to-Permissions.patch b/patches/api/0152-Performance-Concurrency-Improvements-to-Permissions.patch new file mode 100644 index 0000000000..6befcec378 --- /dev/null +++ b/patches/api/0152-Performance-Concurrency-Improvements-to-Permissions.patch @@ -0,0 +1,113 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Aikar <[email protected]> +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 728fc46daf7a38f13906353bdd7362133853af92..cd3296fea01648592d2af89b3d80135acb6d0958 100644 +--- a/src/main/java/org/bukkit/permissions/PermissibleBase.java ++++ b/src/main/java/org/bukkit/permissions/PermissibleBase.java +@@ -72,8 +72,11 @@ 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); + +@@ -93,15 +96,18 @@ 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()); + } + + @Override + @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) { +@@ -120,7 +126,7 @@ public class PermissibleBase implements Permissible { + + @Override + @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()) { +@@ -136,7 +142,7 @@ public class PermissibleBase implements Permissible { + } + + @Override +- 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"); + } +@@ -155,7 +161,7 @@ public class PermissibleBase implements Permissible { + } + + @Override +- public void recalculatePermissions() { ++ public synchronized void recalculatePermissions() { // Paper - synchronized + clearPermissions(); + Set<Permission> defaults = Bukkit.getServer().getPluginManager().getDefaultPermissions(isOp()); + Bukkit.getServer().getPluginManager().subscribeToDefaultPerms(isOp(), parent); +@@ -204,7 +210,7 @@ public class PermissibleBase implements Permissible { + + @Override + @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) { +@@ -224,7 +230,7 @@ public class PermissibleBase implements Permissible { + + @Override + @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()) { +@@ -244,7 +250,7 @@ public class PermissibleBase implements Permissible { + + @Override + @NotNull +- public Set<PermissionAttachmentInfo> getEffectivePermissions() { ++ public synchronized Set<PermissionAttachmentInfo> getEffectivePermissions() { // Paper - synchronized + return new HashSet<PermissionAttachmentInfo>(permissions.values()); + } + |