mirror of
https://github.com/PaperMC/Paper.git
synced 2024-09-12 15:08:27 +02:00
343 lines
15 KiB
Diff
343 lines
15 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Fri, 19 Jul 2019 03:29:14 -0700
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Subject: [PATCH] Reduce sync loads
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This reduces calls to getChunkAt which would load chunks.
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This patch also adds a tool to find calls which are doing this, however
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it must be enabled by setting the startup flag -Dpaper.debug-sync-loads=true
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To get a debug log for sync loads, the command is /paper syncloadinfo
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diff --git a/src/main/java/com/destroystokyo/paper/PaperCommand.java b/src/main/java/com/destroystokyo/paper/PaperCommand.java
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index f657e9b6bb3d24a6c77ef584711a003d1eea0341..eb1e86e8bb0f421e3686ffa02a4015a588107863 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperCommand.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperCommand.java
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@@ -1,6 +1,7 @@
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package com.destroystokyo.paper;
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import com.destroystokyo.paper.io.chunk.ChunkTaskManager;
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+import com.destroystokyo.paper.io.SyncLoadFinder;
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import com.google.common.base.Functions;
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import com.google.common.base.Joiner;
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import com.google.common.collect.ImmutableSet;
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@@ -8,6 +9,10 @@ import com.google.common.collect.Iterables;
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import com.google.common.collect.Lists;
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import com.google.common.collect.Maps;
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import net.minecraft.resources.MinecraftKey;
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+import com.google.gson.JsonObject;
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+import com.google.gson.internal.Streams;
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+import com.google.gson.stream.JsonWriter;
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+import net.minecraft.server.MCUtil;
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import net.minecraft.server.MinecraftServer;
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import net.minecraft.server.level.ChunkProviderServer;
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import net.minecraft.server.level.PlayerChunk;
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@@ -29,6 +34,9 @@ import org.bukkit.craftbukkit.CraftWorld;
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import org.bukkit.entity.Player;
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import java.io.File;
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+import java.io.FileOutputStream;
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+import java.io.PrintStream;
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+import java.io.StringWriter;
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import java.time.LocalDateTime;
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import java.time.format.DateTimeFormatter;
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import java.util.ArrayList;
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@@ -44,7 +52,7 @@ import java.util.stream.Collectors;
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public class PaperCommand extends Command {
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private static final String BASE_PERM = "bukkit.command.paper.";
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- private static final ImmutableSet<String> SUBCOMMANDS = ImmutableSet.<String>builder().add("heap", "entity", "reload", "version", "debug", "chunkinfo", "dumpwaiting").build();
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+ private static final ImmutableSet<String> SUBCOMMANDS = ImmutableSet.<String>builder().add("heap", "entity", "reload", "version", "debug", "chunkinfo", "dumpwaiting", "syncloadinfo").build();
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public PaperCommand(String name) {
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super(name);
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@@ -162,6 +170,9 @@ public class PaperCommand extends Command {
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case "chunkinfo":
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doChunkInfo(sender, args);
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break;
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+ case "syncloadinfo":
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+ this.doSyncLoadInfo(sender, args);
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+ break;
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case "ver":
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if (!testPermission(sender, "version")) break; // "ver" needs a special check because it's an alias. All other commands are checked up before the switch statement (because they are present in the SUBCOMMANDS set)
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case "version":
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@@ -179,6 +190,40 @@ public class PaperCommand extends Command {
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return true;
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}
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+ private void doSyncLoadInfo(CommandSender sender, String[] args) {
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+ if (!SyncLoadFinder.ENABLED) {
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+ sender.sendMessage(ChatColor.RED + "This command requires the server startup flag '-Dpaper.debug-sync-loads=true' to be set.");
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+ return;
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+ }
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+ File file = new File(new File(new File("."), "debug"),
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+ "sync-load-info" + DateTimeFormatter.ofPattern("yyyy-MM-dd_HH.mm.ss").format(LocalDateTime.now()) + ".txt");
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+ file.getParentFile().mkdirs();
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+ sender.sendMessage(ChatColor.GREEN + "Writing sync load info to " + file.toString());
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+
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+
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+ try {
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+ final JsonObject data = SyncLoadFinder.serialize();
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+
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+ StringWriter stringWriter = new StringWriter();
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+ JsonWriter jsonWriter = new JsonWriter(stringWriter);
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+ jsonWriter.setIndent(" ");
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+ jsonWriter.setLenient(false);
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+ Streams.write(data, jsonWriter);
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+
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+ String fileData = stringWriter.toString();
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+
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+ try (
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+ PrintStream out = new PrintStream(new FileOutputStream(file), false, "UTF-8")
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+ ) {
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+ out.print(fileData);
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+ }
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+ sender.sendMessage(ChatColor.GREEN + "Successfully written sync load information!");
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+ } catch (Throwable thr) {
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+ sender.sendMessage(ChatColor.RED + "Failed to write sync load information");
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+ thr.printStackTrace();
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+ }
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+ }
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+
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private void doChunkInfo(CommandSender sender, String[] args) {
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List<org.bukkit.World> worlds;
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if (args.length < 2 || args[1].equals("*")) {
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diff --git a/src/main/java/com/destroystokyo/paper/io/SyncLoadFinder.java b/src/main/java/com/destroystokyo/paper/io/SyncLoadFinder.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..d381f91cf105bfc01846ada90da8971a3618e784
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--- /dev/null
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+++ b/src/main/java/com/destroystokyo/paper/io/SyncLoadFinder.java
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@@ -0,0 +1,171 @@
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+package com.destroystokyo.paper.io;
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+
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+import com.google.gson.JsonArray;
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+import com.google.gson.JsonObject;
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+import com.mojang.datafixers.util.Pair;
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+import it.unimi.dsi.fastutil.longs.Long2IntMap;
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+import it.unimi.dsi.fastutil.longs.Long2IntOpenHashMap;
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+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
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+
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+import java.util.ArrayList;
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+import java.util.List;
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+import java.util.Map;
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+import java.util.WeakHashMap;
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+import net.minecraft.world.level.World;
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+
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+public class SyncLoadFinder {
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+
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+ public static final boolean ENABLED = Boolean.getBoolean("paper.debug-sync-loads");
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+
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+ private static final WeakHashMap<World, Object2ObjectOpenHashMap<ThrowableWithEquals, SyncLoadInformation>> SYNC_LOADS = new WeakHashMap<>();
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+
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+ private static final class SyncLoadInformation {
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+
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+ public int times;
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+
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+ public final Long2IntOpenHashMap coordinateTimes = new Long2IntOpenHashMap();
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+ }
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+
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+ public static void logSyncLoad(final World world, final int chunkX, final int chunkZ) {
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+ if (!ENABLED) {
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+ return;
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+ }
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+
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+ final ThrowableWithEquals stacktrace = new ThrowableWithEquals(Thread.currentThread().getStackTrace());
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+
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+ SYNC_LOADS.compute(world, (final World keyInMap, Object2ObjectOpenHashMap<ThrowableWithEquals, SyncLoadInformation> map) -> {
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+ if (map == null) {
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+ map = new Object2ObjectOpenHashMap<>();
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+ }
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+
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+ map.compute(stacktrace, (ThrowableWithEquals keyInMap0, SyncLoadInformation valueInMap) -> {
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+ if (valueInMap == null) {
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+ valueInMap = new SyncLoadInformation();
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+ }
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+
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+ ++valueInMap.times;
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+
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+ valueInMap.coordinateTimes.compute(IOUtil.getCoordinateKey(chunkX, chunkZ), (Long keyInMap1, Integer valueInMap1) -> {
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+ return valueInMap1 == null ? Integer.valueOf(1) : Integer.valueOf(valueInMap1.intValue() + 1);
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+ });
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+
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+ return valueInMap;
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+ });
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+
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+ return map;
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+ });
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+ }
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+
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+ public static JsonObject serialize() {
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+ final JsonObject ret = new JsonObject();
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+
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+ final JsonArray worldsData = new JsonArray();
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+
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+ for (final Map.Entry<World, Object2ObjectOpenHashMap<ThrowableWithEquals, SyncLoadInformation>> entry : SYNC_LOADS.entrySet()) {
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+ final World world = entry.getKey();
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+
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+ final JsonObject worldData = new JsonObject();
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+
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+ worldData.addProperty("name", world.getWorld().getName());
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+
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+ final List<Pair<ThrowableWithEquals, SyncLoadInformation>> data = new ArrayList<>();
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+
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+ entry.getValue().forEach((ThrowableWithEquals stacktrace, SyncLoadInformation times) -> {
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+ data.add(new Pair<>(stacktrace, times));
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+ });
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+
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+ data.sort((Pair<ThrowableWithEquals, SyncLoadInformation> pair1, Pair<ThrowableWithEquals, SyncLoadInformation> pair2) -> {
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+ return Integer.compare(pair2.getSecond().times, pair1.getSecond().times); // reverse order
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+ });
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+
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+ final JsonArray stacktraces = new JsonArray();
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+
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+ for (Pair<ThrowableWithEquals, SyncLoadInformation> pair : data) {
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+ final JsonObject stacktrace = new JsonObject();
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+
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+ stacktrace.addProperty("times", pair.getSecond().times);
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+
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+ final JsonArray traces = new JsonArray();
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+
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+ for (StackTraceElement element : pair.getFirst().stacktrace) {
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+ traces.add(String.valueOf(element));
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+ }
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+
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+ stacktrace.add("stacktrace", traces);
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+
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+ final JsonArray coordinates = new JsonArray();
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+
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+ for (Long2IntMap.Entry coordinate : pair.getSecond().coordinateTimes.long2IntEntrySet()) {
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+ final long key = coordinate.getLongKey();
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+ final int times = coordinate.getIntValue();
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+ coordinates.add("(" + IOUtil.getCoordinateX(key) + "," + IOUtil.getCoordinateZ(key) + "): " + times);
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+ }
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+
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+ stacktrace.add("coordinates", coordinates);
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+
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+ stacktraces.add(stacktrace);
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+ }
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+
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+
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+ worldData.add("stacktraces", stacktraces);
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+ worldsData.add(worldData);
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+ }
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+
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+ ret.add("worlds", worldsData);
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+
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+ return ret;
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+ }
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+
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+ static final class ThrowableWithEquals {
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+
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+ private final StackTraceElement[] stacktrace;
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+ private final int hash;
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+
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+ public ThrowableWithEquals(final StackTraceElement[] stacktrace) {
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+ this.stacktrace = stacktrace;
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+ this.hash = ThrowableWithEquals.hash(stacktrace);
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+ }
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+
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+ public static int hash(final StackTraceElement[] stacktrace) {
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+ int hash = 0;
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+
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+ for (int i = 0; i < stacktrace.length; ++i) {
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+ hash *= 31;
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+ hash += stacktrace[i].hashCode();
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+ }
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+
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+ return hash;
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+ }
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+
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+ @Override
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+ public int hashCode() {
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+ return this.hash;
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+ }
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+
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+ @Override
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+ public boolean equals(final Object obj) {
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+ if (obj == null || obj.getClass() != this.getClass()) {
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+ return false;
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+ }
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+
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+ final ThrowableWithEquals other = (ThrowableWithEquals)obj;
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+ final StackTraceElement[] otherStackTrace = other.stacktrace;
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+
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+ if (this.stacktrace.length != otherStackTrace.length || this.hash != other.hash) {
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+ return false;
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+ }
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+
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+ if (this == obj) {
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+ return true;
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+ }
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+
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+ for (int i = 0; i < this.stacktrace.length; ++i) {
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+ if (!this.stacktrace[i].equals(otherStackTrace[i])) {
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+ return false;
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+ }
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+ }
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+
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+ return true;
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+ }
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+ }
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+}
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diff --git a/src/main/java/net/minecraft/server/level/ChunkProviderServer.java b/src/main/java/net/minecraft/server/level/ChunkProviderServer.java
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index 1e74299bb3a368dcbc813408804d25cf58a75b0b..662d7f418e8acc9503ebf43e09410e7bd50f6bb3 100644
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--- a/src/main/java/net/minecraft/server/level/ChunkProviderServer.java
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+++ b/src/main/java/net/minecraft/server/level/ChunkProviderServer.java
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@@ -494,6 +494,7 @@ public class ChunkProviderServer extends IChunkProvider {
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this.world.asyncChunkTaskManager.raisePriority(x, z, com.destroystokyo.paper.io.PrioritizedTaskQueue.HIGHEST_PRIORITY);
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com.destroystokyo.paper.io.chunk.ChunkTaskManager.pushChunkWait(this.world, x, z);
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// Paper end
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+ com.destroystokyo.paper.io.SyncLoadFinder.logSyncLoad(this.world, x, z); // Paper - sync load info
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this.world.timings.syncChunkLoad.startTiming(); // Paper
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this.serverThreadQueue.awaitTasks(completablefuture::isDone);
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com.destroystokyo.paper.io.chunk.ChunkTaskManager.popChunkWait(); // Paper - async chunk debug
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diff --git a/src/main/java/net/minecraft/server/level/WorldServer.java b/src/main/java/net/minecraft/server/level/WorldServer.java
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index 96723cac5723ea97780dd3b8697c4ba598788afc..02a64a132502fff19a41d4fa5ffafd61992865a4 100644
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--- a/src/main/java/net/minecraft/server/level/WorldServer.java
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+++ b/src/main/java/net/minecraft/server/level/WorldServer.java
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@@ -282,6 +282,12 @@ public class WorldServer extends World implements GeneratorAccessSeed {
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};
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public final com.destroystokyo.paper.io.chunk.ChunkTaskManager asyncChunkTaskManager;
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// Paper end
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+ // Paper start
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+ @Override
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+ public boolean isChunkLoaded(int x, int z) {
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+ return this.getChunkProvider().getChunkAtIfLoadedImmediately(x, z) != null;
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+ }
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+ // Paper end
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// Add env and gen to constructor, WorldData -> WorldDataServer
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public WorldServer(MinecraftServer minecraftserver, Executor executor, Convertable.ConversionSession convertable_conversionsession, IWorldDataServer iworlddataserver, ResourceKey<World> resourcekey, DimensionManager dimensionmanager, WorldLoadListener worldloadlistener, ChunkGenerator chunkgenerator, boolean flag, long i, List<MobSpawner> list, boolean flag1, org.bukkit.World.Environment env, org.bukkit.generator.ChunkGenerator gen) {
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diff --git a/src/main/java/net/minecraft/world/level/World.java b/src/main/java/net/minecraft/world/level/World.java
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index b620d7e0d824c8d0758a66a8fbe872c3e45103d2..6781b25cc8e15be2556bb1bb8dc8c18c106b40ec 100644
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--- a/src/main/java/net/minecraft/world/level/World.java
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+++ b/src/main/java/net/minecraft/world/level/World.java
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@@ -1130,7 +1130,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
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for (int i1 = i; i1 <= j; ++i1) {
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for (int j1 = k; j1 <= l; ++j1) {
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- Chunk chunk = ichunkprovider.getChunkAt(i1, j1, false);
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+ Chunk chunk = (Chunk)this.getChunkIfLoadedImmediately(i1, j1); // Paper
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if (chunk != null) {
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chunk.a(entity, axisalignedbb, list, predicate);
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@@ -1151,7 +1151,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
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for (int i1 = i; i1 < j; ++i1) {
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for (int j1 = k; j1 < l; ++j1) {
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- Chunk chunk = this.getChunkProvider().getChunkAt(i1, j1, false);
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+ Chunk chunk = (Chunk)this.getChunkIfLoadedImmediately(i1, j1); // Paper
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if (chunk != null) {
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chunk.a(entitytypes, axisalignedbb, list, predicate);
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@@ -1174,7 +1174,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
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for (int i1 = i; i1 < j; ++i1) {
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for (int j1 = k; j1 < l; ++j1) {
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- Chunk chunk = ichunkprovider.getChunkAt(i1, j1, false);
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+ Chunk chunk = (Chunk)this.getChunkIfLoadedImmediately(i1, j1); // Paper
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if (chunk != null) {
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chunk.a(oclass, axisalignedbb, list, predicate);
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