Chunk system patch

patches/server/Further-improve-server-tick-loop.patch

@@ -90,7 +90,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    // Paper End
      // Spigot End
  
-     protected void runServer() {
+     public static volatile RuntimeException chunkSystemCrash; // Paper - rewrite chunk system
 @@ -0,0 +0,0 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
  
              // Spigot start
@@ -99,6 +99,12 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +            long start = System.nanoTime(), curTime, tickSection = start; // Paper - Further improve server tick loop
 +            lastTick = start - TICK_TIME; // Paper
              while (this.running) {
+                 // Paper start - rewrite chunk system
+                 // guarantee that nothing can stop the server from halting if it can at least still tick
+@@ -0,0 +0,0 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+                     throw this.chunkSystemCrash;
+                 }
+                 // Paper end - rewrite chunk system
 -                long i = (curTime = Util.getMillis()) - this.nextTickTime;
 +                long i = ((curTime = System.nanoTime()) / (1000L * 1000L)) - this.nextTickTime; // Paper