From b18fb8a82c16ecb7ee7dd2aa6575efbb3e9b275d Mon Sep 17 00:00:00 2001
From: Krista Bennett <krista@pep-project.org>
Date: Sun, 1 Oct 2017 18:14:00 +0200
Subject: [PATCH] mutex on init() and release()

---
 src/pEpmodule.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/pEpmodule.cc b/src/pEpmodule.cc
index 738e388..ceabced 100644
--- a/src/pEpmodule.cc
+++ b/src/pEpmodule.cc
@@ -7,6 +7,8 @@
 #include "message_api.hh"
 #include "sync_mixin.hh"
 
+#include <mutex>
+
 #include <pEp/message_api.h>
 #include <pEp/sync.h>
 
@@ -22,10 +24,13 @@ namespace pEp {
             return version;
         }
 
+        std::mutex init_mutex;
+        
         PEP_SESSION session = NULL;
 
         static void free_module(void *)
         {
+            std::lock_guard<std::mutex> lock(init_mutex);
             release(session);
         }
 
@@ -428,6 +433,7 @@ BOOST_PYTHON_MODULE(pEp)
     PyModuleDef * _def = PyModule_GetDef(scope().ptr());
     _def->m_free = free_module;
 
+    std::lock_guard<std::mutex> lock(init_mutex);
     PEP_STATUS status = ::init(&session);
     if (status != PEP_STATUS_OK) {
         stringstream ss;
@@ -437,4 +443,3 @@ BOOST_PYTHON_MODULE(pEp)
         throw runtime_error(s);
     }
 }
-