Add config options

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightGetBlocks.java

@@ -438,7 +438,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         final ServerLevel nmsWorld = serverLevel;
         CompletableFuture<LevelChunk> nmsChunkFuture = ensureLoaded(nmsWorld, chunkX, chunkZ);
         LevelChunk chunk = nmsChunkFuture.getNow(null);
-        if (chunk == null && MemUtil.shouldBeginSlow()) {
+        if ((chunk == null && MemUtil.shouldBeginSlow()) || Settings.settings().QUEUE.ASYNC_CHUNK_LOAD_WRITE) {
             try {
                 chunk = nmsChunkFuture.get(); // "Artificially" slow FAWE down if memory low as performing the
             } catch (InterruptedException | ExecutionException e) {

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightGetBlocks.java

@@ -438,7 +438,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         final ServerLevel nmsWorld = serverLevel;
         CompletableFuture<LevelChunk> nmsChunkFuture = ensureLoaded(nmsWorld, chunkX, chunkZ);
         LevelChunk chunk = nmsChunkFuture.getNow(null);
-        if (chunk == null && MemUtil.shouldBeginSlow()) {
+        if ((chunk == null && MemUtil.shouldBeginSlow()) || Settings.settings().QUEUE.ASYNC_CHUNK_LOAD_WRITE) {
             try {
                 chunk = nmsChunkFuture.get(); // "Artificially" slow FAWE down if memory low as performing the
             } catch (InterruptedException | ExecutionException e) {

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightGetBlocks.java

@@ -439,7 +439,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         final ServerLevel nmsWorld = serverLevel;
         CompletableFuture<LevelChunk> nmsChunkFuture = ensureLoaded(nmsWorld, chunkX, chunkZ);
         LevelChunk chunk = nmsChunkFuture.getNow(null);
-        if (chunk == null && MemUtil.shouldBeginSlow()) {
+        if ((chunk == null && MemUtil.shouldBeginSlow()) || Settings.settings().QUEUE.ASYNC_CHUNK_LOAD_WRITE) {
             try {
                 chunk = nmsChunkFuture.get(); // "Artificially" slow FAWE down if memory low as performing the
             } catch (InterruptedException | ExecutionException e) {

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightGetBlocks.java

@@ -440,7 +440,7 @@ public class PaperweightGetBlocks extends CharGetBlocks implements BukkitGetBloc
         final ServerLevel nmsWorld = serverLevel;
         CompletableFuture<LevelChunk> nmsChunkFuture = ensureLoaded(nmsWorld, chunkX, chunkZ);
         LevelChunk chunk = nmsChunkFuture.getNow(null);
-        if (chunk == null && MemUtil.shouldBeginSlow()) {
+        if ((chunk == null && MemUtil.shouldBeginSlow()) || Settings.settings().QUEUE.ASYNC_CHUNK_LOAD_WRITE) {
             try {
                 chunk = nmsChunkFuture.get(); // "Artificially" slow FAWE down if memory low as performing the
             } catch (InterruptedException | ExecutionException e) {

worldedit-core/src/main/java/com/fastasyncworldedit/core/Fawe.java

@@ -138,7 +138,7 @@ public class Fawe {
             } catch (Throwable ignored) {
             }
         }, 0);
-        TaskManager.taskManager().repeatAsync(() -> MemUtil.checkAndSetApproachingLimit(), 1);
+        TaskManager.taskManager().repeatAsync(MemUtil::checkAndSetApproachingLimit, 1);
 
         TaskManager.taskManager().repeat(timer, 1);
 
@@ -418,16 +418,12 @@ public class Fawe {
             final NotificationEmitter ne = (NotificationEmitter) memBean;
 
             ne.addNotificationListener((notification, handback) -> {
-                LOGGER.info("Notification");
                 final long heapSize = Runtime.getRuntime().totalMemory();
                 final long heapMaxSize = Runtime.getRuntime().maxMemory();
                 if (heapSize < heapMaxSize) {
                     return;
                 }
-                LOGGER.info("NNNNNNNNNNNNNNNNNNNNNNNNNNNN");
+                LOGGER.warn("High memory usage detected, FAWE will attempt to slow operations to prevent a crash.");
-                LOGGER.info("NNNNNNNNNNNNNNNNNNNNNNNNNNNN");
-                LOGGER.info("NNNNNNNNNNNNNNNNNNNNNNNNNNNN");
-                LOGGER.info("JJJJJJJJJJJJJJJJJJJJJJJJJJJJ");
                 MemUtil.memoryLimitedTask();
             }, null, null);
 

worldedit-core/src/main/java/com/fastasyncworldedit/core/configuration/Settings.java

@@ -57,6 +57,12 @@ public class Settings extends Config {
             " - Disable with 100 or -1."
     })
     public int MAX_MEMORY_PERCENT = 95;
+    @Comment({
+            "When percent memory usage reaches this threshold some aspects of editing will be slowed down:",
+            " - FAWE-Asynchronous chunk loading when writing changes (see queue.async-chunk-load-write)"
+    })
+    public int SLOWER_MEMORY_PERCENT = 80;
+
     @Create
     public ENABLED_COMPONENTS ENABLED_COMPONENTS;
     @Create
@@ -599,6 +605,13 @@ public class Settings extends Config {
         })
         public boolean POOL = true;
 
+        @Comment({
+                "If chunk loading for writing edits to the world should be performed asynchronously to to FAWE",
+                " - Enable to improve performance at the expense of memory",
+                " - If experience out of memory crashed, disable this or reduce slower-memory-percent"
+        })
+        public boolean ASYNC_CHUNK_LOAD_WRITE = true;
+
         public static class PROGRESS {
 
             @Comment({"Display constant titles about the progress of a user's edit",

worldedit-core/src/main/java/com/fastasyncworldedit/core/util/MemUtil.java

@@ -1,6 +1,8 @@
 package com.fastasyncworldedit.core.util;
 
 import com.fastasyncworldedit.core.configuration.Settings;
+import com.sk89q.worldedit.internal.util.LogManagerCompat;
+import org.apache.logging.log4j.Logger;
 
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
@@ -8,6 +10,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
 
 public class MemUtil {
 
+    private static final Logger LOGGER = LogManagerCompat.getLogger();
     private static final AtomicBoolean memory = new AtomicBoolean(false);
     private static final AtomicBoolean slower = new AtomicBoolean(false);
 
@@ -60,7 +63,8 @@ public class MemUtil {
         final long heapFreeSize = Runtime.getRuntime().freeMemory();
         final long heapMaxSize = Runtime.getRuntime().maxMemory();
         final int size = (int) ((heapFreeSize * 100) / heapMaxSize);
-        slower.set(size > 80);
+        boolean limited = size >= Settings.settings().SLOWER_MEMORY_PERCENT;
+        slower.set(limited);
     }
 
     private static final Queue<Runnable> memoryLimitedTasks = new ConcurrentLinkedQueue<>();