From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Aikar Date: Tue, 9 Jun 2020 03:33:03 -0400 Subject: [PATCH] Add Plugin Tickets to API Chunk Methods Like previous versions, plugins loading chunks kept them loaded until they garbage collected to avoid constant spamming of chunk loads This adds tickets to a few more places so that they can be unloaded. Additionally, this drops their ticket level to BORDER so they wont be ticking so they will just sit inactive instead. Using .loadChunk to keep a chunk ticking was a horrible idea for upstream when we have TWO methods that are able to do that already in the API. Also reduce their collection count down to a maximum of 1 second. Barely anyone knows what chunk-gc is in bukkit.yml as its less relevant now, and since this wasn't spigot behavior, this is safe to mostly ignore (unless someone wants it to collect even faster, they can restore that setting back to 1 instead of 20+) Not adding it to .getType() though to keep behavior consistent with vanilla for performance reasons. diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java index 55416f187c9e35c810162c5ead1375421d6b3d4b..0fa7ec60b30bfc3c3f858aa2a5a7f0fc73d3b6a5 100644 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java @@ -354,7 +354,7 @@ public final class CraftServer implements Server { this.overrideSpawnLimits(); console.autosavePeriod = this.configuration.getInt("ticks-per.autosave"); this.warningState = WarningState.value(this.configuration.getString("settings.deprecated-verbose")); - TicketType.PLUGIN.timeout = this.configuration.getInt("chunk-gc.period-in-ticks"); + TicketType.PLUGIN.timeout = Math.min(20, this.configuration.getInt("chunk-gc.period-in-ticks")); // Paper - cap plugin loads to 1 second this.minimumAPI = this.configuration.getString("settings.minimum-api"); this.loadIcon(); } @@ -920,7 +920,7 @@ public final class CraftServer implements Server { this.console.setMotd(config.motd); this.overrideSpawnLimits(); this.warningState = WarningState.value(this.configuration.getString("settings.deprecated-verbose")); - TicketType.PLUGIN.timeout = this.configuration.getInt("chunk-gc.period-in-ticks"); + TicketType.PLUGIN.timeout = Math.min(20, configuration.getInt("chunk-gc.period-in-ticks")); // Paper - cap plugin loads to 1 second this.minimumAPI = this.configuration.getString("settings.minimum-api"); this.printSaveWarning = false; console.autosavePeriod = this.configuration.getInt("ticks-per.autosave"); diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java index 759370eff9dd53f41d7b00b8372154acf43908e6..daa6f460d6a1006f91ea5fe63ce86625796801f4 100644 --- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java @@ -277,8 +277,21 @@ public class CraftWorld extends CraftRegionAccessor implements World { @Override public Chunk getChunkAt(int x, int z) { - return this.world.getChunkSource().getChunk(x, z, true).bukkitChunk; + // Paper start - add ticket to hold chunk for a little while longer if plugin accesses it + net.minecraft.world.level.chunk.LevelChunk chunk = world.getChunkSource().getChunkAtIfLoadedImmediately(x, z); + if (chunk == null) { + addTicket(x, z); + chunk = this.world.getChunkSource().getChunk(x, z, true); + } + return chunk.bukkitChunk; + // Paper end + } + + // Paper start + private void addTicket(int x, int z) { + net.minecraft.server.MCUtil.MAIN_EXECUTOR.execute(() -> world.getChunkSource().addRegionTicket(TicketType.PLUGIN, new ChunkPos(x, z), 0, Unit.INSTANCE)); // Paper } + // Paper end @Override public Chunk getChunkAt(Block block) { @@ -345,7 +358,7 @@ public class CraftWorld extends CraftRegionAccessor implements World { public boolean unloadChunkRequest(int x, int z) { org.spigotmc.AsyncCatcher.catchOp("chunk unload"); // Spigot if (this.isChunkLoaded(x, z)) { - this.world.getChunkSource().removeRegionTicket(TicketType.PLUGIN, new ChunkPos(x, z), 1, Unit.INSTANCE); + this.world.getChunkSource().removeRegionTicket(TicketType.PLUGIN, new ChunkPos(x, z), 0, Unit.INSTANCE); // Paper } return true; @@ -428,9 +441,12 @@ public class CraftWorld extends CraftRegionAccessor implements World { org.spigotmc.AsyncCatcher.catchOp("chunk load"); // Spigot // Paper start - Optimize this method ChunkPos chunkPos = new ChunkPos(x, z); + ChunkAccess immediate = world.getChunkSource().getChunkAtIfLoadedImmediately(x, z); // Paper + if (immediate != null) return true; // Paper if (!generate) { - ChunkAccess immediate = world.getChunkSource().getChunkAtImmediately(x, z); + + //IChunkAccess immediate = world.getChunkProvider().getChunkAtImmediately(x, z); // Paper if (immediate == null) { immediate = world.getChunkSource().chunkMap.getUnloadingChunk(x, z); } @@ -438,7 +454,7 @@ public class CraftWorld extends CraftRegionAccessor implements World { if (!(immediate instanceof ImposterProtoChunk) && !(immediate instanceof net.minecraft.world.level.chunk.LevelChunk)) { return false; // not full status } - world.getChunkSource().addRegionTicket(TicketType.PLUGIN, chunkPos, 1, Unit.INSTANCE); + world.getChunkSource().addRegionTicket(TicketType.PLUGIN, chunkPos, 0, Unit.INSTANCE); // Paper world.getChunk(x, z); // make sure we're at ticket level 32 or lower return true; } @@ -464,7 +480,7 @@ public class CraftWorld extends CraftRegionAccessor implements World { // we do this so we do not re-read the chunk data on disk } - world.getChunkSource().addRegionTicket(TicketType.PLUGIN, chunkPos, 1, Unit.INSTANCE); + world.getChunkSource().addRegionTicket(TicketType.PLUGIN, chunkPos, 0, Unit.INSTANCE); // Paper world.getChunkSource().getChunk(x, z, ChunkStatus.FULL, true); return true; // Paper end @@ -1984,6 +2000,7 @@ public class CraftWorld extends CraftRegionAccessor implements World { return this.world.getChunkSource().getChunkAtAsynchronously(x, z, gen, urgent).thenComposeAsync((either) -> { net.minecraft.world.level.chunk.LevelChunk chunk = (net.minecraft.world.level.chunk.LevelChunk) either.left().orElse(null); + if (chunk != null) addTicket(x, z); // Paper return java.util.concurrent.CompletableFuture.completedFuture(chunk == null ? null : chunk.getBukkitChunk()); }, net.minecraft.server.MinecraftServer.getServer()); }