Use custom interruption flag for JEI reload thread

Fixes #5

build.gradle

@@ -18,7 +18,7 @@ plugins {
 apply plugin: 'org.spongepowered.mixin'
 
 group = 'org.embeddedt'
-version = '1.4.1'
+version = '1.4.2'
 
 java {
     archivesBaseName = 'modernfix-mc' + minecraft_version

src/main/java/org/embeddedt/modernfix/jei/async/IAsyncJeiStarter.java

@@ -2,7 +2,7 @@ package org.embeddedt.modernfix.jei.async;
 
 public interface IAsyncJeiStarter {
     static void checkForLoadInterruption() {
-        if(Thread.currentThread().isInterrupted())
+        if(((JEIReloadThread)Thread.currentThread()).isStopRequested())
             throw new JEILoadingInterruptedException();
     }
 }

src/main/java/org/embeddedt/modernfix/jei/async/JEIReloadThread.java

@@ -0,0 +1,18 @@
+package org.embeddedt.modernfix.jei.async;
+
+public class JEIReloadThread extends Thread {
+    private volatile boolean stopRequested;
+
+    public JEIReloadThread(Runnable runnable, String s) {
+        super(runnable, s);
+        this.stopRequested = false;
+    }
+
+    public void requestStop() {
+        stopRequested = true;
+    }
+
+    public boolean isStopRequested() {
+        return stopRequested;
+    }
+}

src/main/java/org/embeddedt/modernfix/mixin/perf/async_jei/ClientLifecycleHandlerMixin.java

@@ -15,6 +15,7 @@ import net.minecraft.client.Minecraft;
 import net.minecraftforge.client.event.ClientPlayerNetworkEvent;
 import org.embeddedt.modernfix.ModernFix;
 import org.embeddedt.modernfix.jei.async.JEILoadingInterruptedException;
+import org.embeddedt.modernfix.jei.async.JEIReloadThread;
 import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Overwrite;
@@ -38,7 +39,7 @@ public class ClientLifecycleHandlerMixin {
     @Shadow(remap = false) @Final private IModIdHelper modIdHelper;
     @Shadow(remap = false) @Final private RecipeCategorySortingConfig recipeCategorySortingConfig;
     @Shadow(remap = false) @Final private IIngredientSorter ingredientSorter;
-    private volatile Thread reloadThread = null;
+    private volatile JEIReloadThread reloadThread = null;
     @Inject(method = "setupJEI", at = @At(value = "INVOKE", target = "Lmezz/jei/startup/ClientLifecycleHandler;startJEI()V"), cancellable = true, remap = false)
     private void startAsync(CallbackInfo ci) {
         ci.cancel();
@@ -60,9 +61,9 @@ public class ClientLifecycleHandlerMixin {
     }
 
     private void cancelPreviousStart() {
-        Thread currentReloadThread = reloadThread;
+        JEIReloadThread currentReloadThread = reloadThread;
         if(currentReloadThread != null) {
-            currentReloadThread.interrupt();
+            currentReloadThread.requestStop();
             Minecraft.getInstance().managedBlock(currentReloadThread::isAlive);
             reloadThread = null;
         }
@@ -71,8 +72,10 @@ public class ClientLifecycleHandlerMixin {
     private static int numReloads = 1;
 
     private void startJEIAsync(Runnable whenFinishedCb) {
+        ModernFix.LOGGER.info("JEI restart triggered. Waiting for previous thread to die.");
         cancelPreviousStart();
-        Thread newThread = new Thread(() -> {
+        ModernFix.LOGGER.info("Starting new JEI thread.");
+        JEIReloadThread newThread = new JEIReloadThread(() -> {
             try {
                 starter.start(
                         plugins,