yeet most of tick

src/main/java/carpet/mixins/ServerChunkCache_profilerMixin.java

@@ -0,0 +1,73 @@
+package carpet.mixins;
+
+import carpet.utils.CarpetProfiler;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import net.minecraft.server.level.ServerChunkCache;
+import net.minecraft.server.level.ServerLevel;
+
+@Mixin(ServerChunkCache.class)
+public abstract class ServerChunkCache_profilerMixin
+{
+
+    @Shadow @Final ServerLevel level;
+
+    CarpetProfiler.ProfilerToken currentSection;
+
+    @Inject(method = "tickChunks", at = @At("HEAD"))
+    private void startSpawningSection(CallbackInfo ci)
+    {
+        currentSection = CarpetProfiler.start_section(level, "Spawning", CarpetProfiler.TYPE.GENERAL);
+    }
+
+    @Inject(method = "tickChunks", at = @At(
+            value = "FIELD",
+            target = "net/minecraft/server/level/ServerChunkCache.level:Lnet/minecraft/server/level/ServerLevel;",
+            ordinal = 10
+    ))
+    private void skipChunkTicking(CallbackInfo ci)
+    {
+        if (currentSection != null)
+        {
+            CarpetProfiler.end_current_section(currentSection);
+        }
+    }
+
+    @Inject(method = "tickChunks", at = @At(
+            value = "INVOKE",
+            target = "net/minecraft/server/level/ServerLevel.tickChunk(Lnet/minecraft/world/level/chunk/LevelChunk;I)V",
+            shift = At.Shift.AFTER
+    ))
+    private void resumeSpawningSection(CallbackInfo ci)
+    {
+        currentSection = CarpetProfiler.start_section(level, "Spawning", CarpetProfiler.TYPE.GENERAL);
+    }
+
+    @Inject(method = "tickChunks", at = @At("RETURN"))
+    private void stopSpawningSection(CallbackInfo ci)
+    {
+        if (currentSection != null)
+        {
+            CarpetProfiler.end_current_section(currentSection);
+        }
+    }
+
+    //@Redirect(method = "tick", at = @At(
+    //        value = "INVOKE",
+    //        target = "Lnet/minecraft/server/level/DistanceManager;purgeStaleTickets()V"
+    //))
+    //private void pauseTicketSystem(DistanceManager distanceManager)
+    //{
+        // pausing expiry of tickets
+        // that will prevent also chunks from unloading, so require a deep frozen state
+        //ServerTickRateManager trm = ((MinecraftServerInterface) level.getServer()).getTickRateManager();
+        //if (!trm.runsNormally() && trm.deeplyFrozen()) return;
+        //distanceManager.purgeStaleTickets();
+    //}
+
+}