From afcc9e6c55d58da7b8234625b6257c8edcf78bc6 Mon Sep 17 00:00:00 2001 From: md_5 Date: Sun, 3 Feb 2013 12:28:17 +1100 Subject: [PATCH] Highly Optimized Tick Loop diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java index c78e47b..ce2aaf4 100644 --- a/src/main/java/net/minecraft/server/MinecraftServer.java +++ b/src/main/java/net/minecraft/server/MinecraftServer.java @@ -101,6 +101,12 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IMo public java.util.Queue processQueue = new java.util.concurrent.ConcurrentLinkedQueue(); public int autosavePeriod; // CraftBukkit end + // Spigot start + private static final int TPS = 20; + private static final int TICK_TIME = 1000000000 / TPS; + public static double currentTPS = 0; + private static long catchupTime = 0; + // Spigot end public MinecraftServer(OptionSet options, Proxy proxy) { // CraftBukkit - signature file -> OptionSet i = this; @@ -422,45 +428,23 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IMo public void run() { try { if (this.init()) { - long i = ap(); - long j = 0L; - - this.p.setMOTD(new ChatComponentText(this.motd)); - this.p.setServerInfo(new ServerPingServerData("1.7.2", 4)); - this.a(this.p); - - while (this.isRunning) { - long k = ap(); - long l = k - i; - - if (l > 2000L && i - this.O >= 15000L) { - if (this.server.getWarnOnOverload()) // CraftBukkit - Added option to suppress warning messages - h.warn("Can\'t keep up! Did the system time change, or is the server overloaded? Running {}ms behind, skipping {} tick(s)", new Object[] { Long.valueOf(l), Long.valueOf(l / 50L)}); - l = 2000L; - this.O = i; - } - - if (l < 0L) { - h.warn("Time ran backwards! Did the system time change?"); - l = 0L; - } - - j += l; - i = k; - if (this.worlds.get(0).everyoneDeeplySleeping()) { // CraftBukkit - this.t(); - j = 0L; + // Spigot start + for (long lastTick = 0L; this.isRunning;) { + long curTime = System.nanoTime(); + long wait = TICK_TIME - (curTime - lastTick) - catchupTime; + if (wait > 0) { + Thread.sleep(wait / 1000000); + catchupTime = 0; + continue; } else { - while (j > 50L) { - MinecraftServer.currentTick = (int) (System.currentTimeMillis() / 50); // CraftBukkit - j -= 50L; - this.t(); - } + catchupTime = Math.min(TICK_TIME * TPS, Math.abs(wait)); } - - Thread.sleep(1L); - this.N = true; + currentTPS = (currentTPS * 0.95) + (1E9 / (curTime - lastTick) * 0.05); + lastTick = curTime; + MinecraftServer.currentTick++; + this.t(); } + // Spigot end } else { this.a((CrashReport) null); } diff --git a/src/main/java/org/bukkit/craftbukkit/command/TicksPerSecondCommand.java b/src/main/java/org/bukkit/craftbukkit/command/TicksPerSecondCommand.java new file mode 100644 index 0000000..f114a31 --- /dev/null +++ b/src/main/java/org/bukkit/craftbukkit/command/TicksPerSecondCommand.java @@ -0,0 +1,35 @@ +package org.bukkit.craftbukkit.command; + +import net.minecraft.server.MinecraftServer; +import org.bukkit.ChatColor; +import org.bukkit.command.Command; +import org.bukkit.command.CommandSender; + +public class TicksPerSecondCommand extends Command { + + public TicksPerSecondCommand(String name) { + super(name); + this.description = "Gets the current ticks per second for the server"; + this.usageMessage = "/tps"; + this.setPermission("bukkit.command.tps"); + } + + @Override + public boolean execute(CommandSender sender, String currentAlias, String[] args) { + if (!testPermission(sender)) return true; + + double tps = Math.min(20, Math.round(MinecraftServer.currentTPS * 10) / 10.0); + ChatColor color; + if (tps > 19.2D) { + color = ChatColor.GREEN; + } else if (tps > 17.4D) { + color = ChatColor.YELLOW; + } else { + color = ChatColor.RED; + } + + sender.sendMessage(ChatColor.GOLD + "[TPS] " + color + tps); + + return true; + } +} diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java index 3dfe4ed..1b0e1bf 100644 --- a/src/main/java/org/spigotmc/SpigotConfig.java +++ b/src/main/java/org/spigotmc/SpigotConfig.java @@ -14,6 +14,7 @@ import net.minecraft.server.MinecraftServer; import org.bukkit.Bukkit; import org.bukkit.command.Command; import org.bukkit.configuration.file.YamlConfiguration; +import org.bukkit.craftbukkit.command.TicksPerSecondCommand; public class SpigotConfig { @@ -117,4 +118,9 @@ public class SpigotConfig config.addDefault( path, def ); return config.getString( path, config.getString( path ) ); } + + private static void tpsCommand() + { + commands.put( "tps", new TicksPerSecondCommand( "tps" ) ); + } } -- 1.8.3.2