SteamWar/Paper
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Code Issues Pull-Requests 1 Aktivität

Improve MT-Safety of UserCache (#2080)

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We were missing a synchronize on a get if cached method, however
it appears that using a ConcurrentHashMap is a better solution
so readers can avoid locking if they just want a cached value.

Existing synchronization for writers remains untouched, the
ConcurrentHashMap is just so readers can safely read without
synchronization
Dieser Commit ist enthalten in:
Spottedleaf 2019-05-26 23:17:50 -07:00
Ursprung 78a4e64734
Commit 66554efabb
2 geänderte Dateien mit 27 neuen und 19 gelöschten Zeilen
Statistiken anzeigen Patch-Datei herunterladen Vergleichs-Datei herunterladen Alle Dateien ausklappen Alle Dateien einklappen

26
Spigot-Server-Patches/Basic-PlayerProfile-API.patch
Datei anzeigen

@ -7,7 +7,7 @@ Establishes base extension of profile systems for future edits too
diff --git a/src/main/java/com/destroystokyo/paper/profile/CraftPlayerProfile.java b/src/main/java/com/destroystokyo/paper/profile/CraftPlayerProfile.java
new file mode 100644
index 000000000..b151a13c1
index 0000000000..b151a13c1b
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/profile/CraftPlayerProfile.java
@@ -0,0 +0,0 @@
@ -293,7 +293,7 @@ index 000000000..b151a13c1
+}
diff --git a/src/main/java/com/destroystokyo/paper/profile/PaperAuthenticationService.java b/src/main/java/com/destroystokyo/paper/profile/PaperAuthenticationService.java
new file mode 100644
index 000000000..25836b975
index 0000000000..25836b975b
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/profile/PaperAuthenticationService.java
@@ -0,0 +0,0 @@
@ -329,7 +329,7 @@ index 000000000..25836b975
+}
diff --git a/src/main/java/com/destroystokyo/paper/profile/PaperGameProfileRepository.java b/src/main/java/com/destroystokyo/paper/profile/PaperGameProfileRepository.java
new file mode 100644
index 000000000..3bcdb8f93
index 0000000000..3bcdb8f93f
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/profile/PaperGameProfileRepository.java
@@ -0,0 +0,0 @@
@ -352,7 +352,7 @@ index 000000000..3bcdb8f93
+}
diff --git a/src/main/java/com/destroystokyo/paper/profile/PaperMinecraftSessionService.java b/src/main/java/com/destroystokyo/paper/profile/PaperMinecraftSessionService.java
new file mode 100644
index 000000000..4b2a67423
index 0000000000..4b2a67423f
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/profile/PaperMinecraftSessionService.java
@@ -0,0 +0,0 @@
@ -387,7 +387,7 @@ index 000000000..4b2a67423
+}
diff --git a/src/main/java/com/destroystokyo/paper/profile/PaperUserAuthentication.java b/src/main/java/com/destroystokyo/paper/profile/PaperUserAuthentication.java
new file mode 100644
index 000000000..3aceb0ea8
index 0000000000..3aceb0ea8a
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/profile/PaperUserAuthentication.java
@@ -0,0 +0,0 @@
@ -403,7 +403,7 @@ index 000000000..3aceb0ea8
+ }
+}
diff --git a/src/main/java/net/minecraft/server/MCUtil.java b/src/main/java/net/minecraft/server/MCUtil.java
index 1f6a12632..6d278a0da 100644
index 1f6a126329..6d278a0da5 100644
--- a/src/main/java/net/minecraft/server/MCUtil.java
+++ b/src/main/java/net/minecraft/server/MCUtil.java
@@ -0,0 +0,0 @@
@ -429,7 +429,7 @@ index 1f6a12632..6d278a0da 100644
* Calculates distance between 2 entities
* @param e1
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index cdf162a95..d909ad682 100644
index 6b83f9769a..5817e94525 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -0,0 +0,0 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
@ -450,16 +450,16 @@ index cdf162a95..d909ad682 100644
return this.minecraftSessionService;
}
diff --git a/src/main/java/net/minecraft/server/UserCache.java b/src/main/java/net/minecraft/server/UserCache.java
index 409bc6da9..9eaf1539f 100644
index fd17a3e93a..d88a510bd0 100644
--- a/src/main/java/net/minecraft/server/UserCache.java
+++ b/src/main/java/net/minecraft/server/UserCache.java
@@ -0,0 +0,0 @@ public class UserCache {
public static final SimpleDateFormat a = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z");
private static boolean c;
- private final Map<String, UserCache.UserCacheEntry> d = Maps.newHashMap();
+ private final Map<String, UserCache.UserCacheEntry> d = Maps.newHashMap();private final Map<String, UserCache.UserCacheEntry> nameCache = d; // Paper - OBFHELPER
private final Map<UUID, UserCache.UserCacheEntry> e = Maps.newHashMap();
- private final Map<String, UserCache.UserCacheEntry> d = new java.util.concurrent.ConcurrentHashMap<>(); // Paper
+ private final Map<String, UserCache.UserCacheEntry> d = new java.util.concurrent.ConcurrentHashMap<>();private final Map<String, UserCache.UserCacheEntry> nameCache = d; // Paper - OBFHELPER // Paper
private final Map<UUID, UserCache.UserCacheEntry> e = new java.util.concurrent.ConcurrentHashMap<>(); // Paper
private final Deque<GameProfile> f = new java.util.concurrent.LinkedBlockingDeque<GameProfile>(); // CraftBukkit
private final GameProfileRepository g;
@@ -0,0 +0,0 @@ public class UserCache {
@ -475,7 +475,7 @@ index 409bc6da9..9eaf1539f 100644
+
@Nullable public GameProfile getProfile(UUID uuid) { return a(uuid); } // Paper - OBFHELPER
@Nullable
public synchronized GameProfile a(UUID uuid) { // Paper - synchronize
public GameProfile a(UUID uuid) {
@@ -0,0 +0,0 @@ public class UserCache {
class UserCacheEntry {
@ -486,7 +486,7 @@ index 409bc6da9..9eaf1539f 100644
private UserCacheEntry(GameProfile gameprofile, Date date) {
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 44acc6a5f..cdf3b6b6c 100644
index a79403cbce..8f7fd3490f 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -0,0 +0,0 @@ import org.yaml.snakeyaml.error.MarkedYAMLException;

20
Spigot-Server-Patches/Optimize-UserCache-Thread-Safe.patch
Datei anzeigen

@ -10,7 +10,7 @@ Additionally, move Saving of the User cache to be done async, incase
the user never changed the default setting for Spigot's save on stop only.
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index a3c53d9dbf..3b745b2b75 100644
index d3d8fffeb0..f142ed9a3b 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -0,0 +0,0 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
@ -23,9 +23,20 @@ index a3c53d9dbf..3b745b2b75 100644
// Spigot end
}
diff --git a/src/main/java/net/minecraft/server/UserCache.java b/src/main/java/net/minecraft/server/UserCache.java
index 41be5bf64e..cd8a652eb6 100644
index 41be5bf64e..dc5c0afab4 100644
--- a/src/main/java/net/minecraft/server/UserCache.java
+++ b/src/main/java/net/minecraft/server/UserCache.java
@@ -0,0 +0,0 @@ public class UserCache {
public static final SimpleDateFormat a = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z");
private static boolean c;
- private final Map<String, UserCache.UserCacheEntry> d = Maps.newHashMap();
- private final Map<UUID, UserCache.UserCacheEntry> e = Maps.newHashMap();
+ private final Map<String, UserCache.UserCacheEntry> d = new java.util.concurrent.ConcurrentHashMap<>(); // Paper
+ private final Map<UUID, UserCache.UserCacheEntry> e = new java.util.concurrent.ConcurrentHashMap<>(); // Paper
private final Deque<GameProfile> f = new java.util.concurrent.LinkedBlockingDeque<GameProfile>(); // CraftBukkit
private final GameProfileRepository g;
protected final Gson b;
@@ -0,0 +0,0 @@ public class UserCache {
this.a(gameprofile, (Date) null);
}
@ -61,11 +72,8 @@ index 41be5bf64e..cd8a652eb6 100644
+ @Nullable public GameProfile getProfile(UUID uuid) { return a(uuid); } // Paper - OBFHELPER
@Nullable
- public GameProfile a(UUID uuid) {
+ public synchronized GameProfile a(UUID uuid) { // Paper - synchronize
public GameProfile a(UUID uuid) {
UserCache.UserCacheEntry usercache_usercacheentry = (UserCache.UserCacheEntry) this.e.get(uuid);
return usercache_usercacheentry == null ? null : usercache_usercacheentry.a();
@@ -0,0 +0,0 @@ public class UserCache {
}