From b531199eb551e35df458edb600c535e51b84e8aa Mon Sep 17 00:00:00 2001
From: Jakub Valtar <jakub.valtar@gmail.com>
Date: Fri, 20 Jan 2017 12:49:23 +0100
Subject: [PATCH] Allow JAVA2D to terminate when animation thread dies

When Java2D sketch crashes, closing the window does not stop Event
Dispatch Thread. This fix makes PApplet.exit() do the right thing and
not wait for surface to finish when the thread is already dead.

Fixes #4831
---
 core/src/processing/core/PSurfaceNone.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/processing/core/PSurfaceNone.java b/core/src/processing/core/PSurfaceNone.java
index 7b5a17f57..cb9038459 100644
--- a/core/src/processing/core/PSurfaceNone.java
+++ b/core/src/processing/core/PSurfaceNone.java
@@ -207,7 +207,7 @@ public class PSurfaceNone implements PSurface {
 
 
   public boolean isStopped() {
-    return thread == null;
+    return thread == null || !thread.isAlive();
   }