From 0821e823ed473b385a581ff20ae309278254aff5 Mon Sep 17 00:00:00 2001
From: Hussein Kasem <huss@pep-project.org>
Date: Tue, 28 Feb 2017 14:31:20 +0100
Subject: [PATCH] synchronize pEpEngine close to avoid race condition

---
 src/org/pEp/jniadapter/AbstractEngine.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/org/pEp/jniadapter/AbstractEngine.java b/src/org/pEp/jniadapter/AbstractEngine.java
index 57ef25e..5754886 100644
--- a/src/org/pEp/jniadapter/AbstractEngine.java
+++ b/src/org/pEp/jniadapter/AbstractEngine.java
@@ -30,7 +30,9 @@ abstract class AbstractEngine implements AutoCloseable {
     }
 
     final public void close() {
-        release();
+        synchronized (AbstractEngine.class){
+            release();
+        }
     }
 
     private long keyserverThread;