From cac65ef755f6ed941932e41da34de428ab9cd943 Mon Sep 17 00:00:00 2001
From: SquidDev <bonzoweb@hotmail.co.uk>
Date: Tue, 24 Apr 2018 11:07:33 +0100
Subject: [PATCH] Print a useful debug log if we cannot safely terminate a task

---
 .../core/computer/ComputerThread.java           | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/main/java/dan200/computercraft/core/computer/ComputerThread.java b/src/main/java/dan200/computercraft/core/computer/ComputerThread.java
index d97166ce5..43be5fa4e 100644
--- a/src/main/java/dan200/computercraft/core/computer/ComputerThread.java
+++ b/src/main/java/dan200/computercraft/core/computer/ComputerThread.java
@@ -224,6 +224,23 @@ private void execute( BlockingQueue<ITask> queue ) throws InterruptedException
                     // Interrupt the thread
                     if( !done )
                     {
+                        StringBuilder builder = new StringBuilder( "Terminating " );
+                        if( computer != null )
+                        {
+                            builder.append( "computer " ).append( computer.getID() );
+                        }
+                        else
+                        {
+                            builder.append( "unknown computer" );
+                        }
+
+                        builder.append( ". Thread is currently running" );
+                        for( StackTraceElement element : thread.getStackTrace() )
+                        {
+                            builder.append( "\n  at " ).append( element );
+                        }
+                        ComputerCraft.log.error( builder.toString() );
+
                         thread.interrupt();
                         thread = null;
                         runner = null;