Performance Fish

2022-10-24 18:24:02 +02:00
parent 594b32b4ef
commit 2efa8e466c
69 changed files with 9147 additions and 3 deletions
@@ -0,0 +1,96 @@
+// Copyright (c) 2022 bradson
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+using System.Linq;
+using System.Reflection.Emit;
+
+namespace PerformanceFish;
+
+public class GenLocalDateCaching : ClassWithFishPatches
+{
+	public class DayTickByThing_Patch : FishPatch
+	{
+		public override string? Description => "Caches results of GenLocalDate.DayTick for the first map. This is similar to Rim73's mind state optimization, but yields accurate results instead of a placeholder value to avoid issues.";
+		public override Delegate? TargetMethodGroup => (Func<Thing, int>)GenLocalDate.DayTick;
+		public override int TranspilerMethodPriority => Priority.First;
+
+		public static CodeInstructions Transpiler(CodeInstructions codes, MethodBase method, ILGenerator generator)
+		//=> Reflection.GetCodeInstructions(Replacement);
+		{
+			var labelToStartOfMethod = generator.DefineLabel();
+			codes.First().labels.Add(labelToStartOfMethod);
+
+			yield return FishTranspiler.Argument(method, "thing");
+			yield return FishTranspiler.Field(typeof(Thing), nameof(Thing.mapIndexOrState));
+			yield return FishTranspiler.Constant(0);
+			yield return FishTranspiler.IfLessThan(labelToStartOfMethod);
+
+			yield return FishTranspiler.Field(typeof(Current), nameof(Current.gameInt));
+			yield return FishTranspiler.Field(typeof(Game), nameof(Game.maps));
+			yield return FishTranspiler.Argument(method, "thing");
+			yield return FishTranspiler.Field(typeof(Thing), nameof(Thing.mapIndexOrState));
+			yield return FishTranspiler.Call(typeof(List<Map>), "get_Item");
+			yield return FishTranspiler.Call<Func<Map, int>>(GenLocalDate.DayTick);
+			yield return FishTranspiler.Return;
+
+			foreach (var code in codes)
+				yield return code;
+
+		}
+
+		//[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		//public static int Replacement(Thing thing)
+		//	=> thing.mapIndexOrState < 0 ? GenDate.DayTick(GenTicks.TicksAbs, GenLocalDate.LongitudeForDate(thing))
+		//	: GenLocalDate.DayTick(Current.gameInt.maps[thing.mapIndexOrState]);
+
+		//[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		//public static bool Prefix(Thing thing, ref int __result)
+		//{
+		//	if (thing.mapIndexOrState < 0)
+		//		return true;
+
+		//	__result = GenLocalDate.DayTick(Current.gameInt.maps[thing.mapIndexOrState]);
+		//	return false;
+		//}
+	}
+
+	public class DayTickByMap_Patch : FishPatch
+	{
+		public override string? Description => "Caches results of GenLocalDate.DayTick for the first map. This is similar to Rim73's mind state optimization, but yields accurate results instead of a placeholder value to avoid issues.";
+		public override Delegate? TargetMethodGroup => (Func<Map, int>)GenLocalDate.DayTick;
+
+		[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		public static bool Prefix(Map map, ref int __result, out bool __state)
+		{
+			if (map != SavedMap)
+			{
+				if (SavedMap is null && Find.Maps?.Count > 0 && Find.Maps[0] == map)
+					SavedMap = map;
+
+				return __state = true;
+			}
+
+			if (SavedTick != GenTicks.TicksGame)
+				return __state = true;
+
+			__result = DayTick;
+			return __state = false;
+		}
+
+		[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		public static void Postfix(Map map, int __result, bool __state)
+		{
+			if (!__state || SavedMap != map)
+				return;
+
+			SavedTick = GenTicks.TicksGame;
+			DayTick = __result;
+		}
+	}
+
+	public static Map? SavedMap;
+	public static int SavedTick;
+	public static int DayTick;
+}