From 81faa98f21234466ed0faf5fb919c9345cb2f935 Mon Sep 17 00:00:00 2001
From: Dario <dario.rekowski@gmx.de>
Date: Tue, 14 Jul 2020 21:03:25 +0200
Subject: [PATCH] add mutex for connection manager, maybe there is where the
 mysql error are coming from, if two threads call getConnection at the same
 time

---
 src/cpp/SingletonManager/ConnectionManager.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/cpp/SingletonManager/ConnectionManager.h b/src/cpp/SingletonManager/ConnectionManager.h
index 9f7057d5c..90ad7cd93 100644
--- a/src/cpp/SingletonManager/ConnectionManager.h
+++ b/src/cpp/SingletonManager/ConnectionManager.h
@@ -36,6 +36,8 @@ public:
 	}
 
 	inline Poco::Data::Session getConnection(ConnectionType type) {
+		Poco::ScopedLock<Poco::FastMutex> _lock(mWorkingMutex);
+
 		switch (type)
 		{
 		case CONNECTION_MYSQL_LOGIN_SERVER: 
@@ -55,6 +57,7 @@ protected:
 private:
 	std::string mSessionPoolNames[CONNECTION_MAX];
 	Poco::Data::SessionPoolContainer mSessionPools;
+	Poco::FastMutex  mWorkingMutex;
 };
 
 #endif //GRADIDO_LOGIN_SERVER_SINGLETON_MANAGER_CONNECTION_MANAGER_INCLUDE
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