From 44cfbebedb7def15bc599cfbd5e1e5238e97a9c2 Mon Sep 17 00:00:00 2001
From: John Rommel Estropia <rommel.estropia@gmail.com>
Date: Fri, 1 Apr 2016 01:28:39 +0900
Subject: [PATCH] prevent deadlock on when DataStack gets deallocated

---
 CoreStore/Setting Up/DataStack.swift | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/CoreStore/Setting Up/DataStack.swift b/CoreStore/Setting Up/DataStack.swift
index 551ba4e..0b1ba57 100644
--- a/CoreStore/Setting Up/DataStack.swift	
+++ b/CoreStore/Setting Up/DataStack.swift	
@@ -399,9 +399,16 @@ public final class DataStack {
     
     deinit {
         
-        for store in self.coordinator.persistentStores {
+        let coordinator = self.coordinator
+        coordinator.performAsynchronously {
             
-            _ = try? self.coordinator.removePersistentStore(store)
+            withExtendedLifetime(coordinator) { coordinator in
+                
+                coordinator.persistentStores.forEach {
+                    
+                    _ = try? coordinator.removePersistentStore($0)
+                }
+            }
         }
     }
 }