From: Razvan Becheriu <razvan@isc.org>
Date: Mon, 3 Nov 2025 12:26:31 +0000 (+0200)
Subject: [#4207] fixed mysql lib unload
X-Git-Tag: Kea-3.1.4~8
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b796a974713dc4be3020ea42e887a6df57b1d91c;p=thirdparty%2Fkea.git

[#4207] fixed mysql lib unload
---

diff --git a/src/lib/mysql/mysql_connection.cc b/src/lib/mysql/mysql_connection.cc
index 8874f9503c..7c63257d8d 100644
--- a/src/lib/mysql/mysql_connection.cc
+++ b/src/lib/mysql/mysql_connection.cc
@@ -31,11 +31,9 @@ using namespace std;
 namespace isc {
 namespace db {
 
-std::string MySqlConnection::KEA_ADMIN_ = KEA_ADMIN;
+static MySqlLibraryInit init;
 
-int MySqlHolder::atexit_ = [] {
-    return atexit([] { mysql_library_end(); });
-}();
+std::string MySqlConnection::KEA_ADMIN_ = KEA_ADMIN;
 
 /// @todo: Migrate this default value to src/bin/dhcpX/simple_parserX.cc
 const int MYSQL_DEFAULT_CONNECTION_TIMEOUT = 5; // seconds
diff --git a/src/lib/mysql/mysql_connection.h b/src/lib/mysql/mysql_connection.h
index c7b352a9c0..ea040867de 100644
--- a/src/lib/mysql/mysql_connection.h
+++ b/src/lib/mysql/mysql_connection.h
@@ -161,8 +161,6 @@ public:
     }
 
 private:
-    /// @brief Variable used for its static property to call atexit() once.
-    static int atexit_;
 
     /// @brief Initialization context
     MYSQL* mysql_;
@@ -836,6 +834,19 @@ public:
     static std::string KEA_ADMIN_;
 };
 
+/// @brief Structure used to initialize and clean up after MySQL library.
+struct MySqlLibraryInit {
+    /// @brief Constructor.
+    MySqlLibraryInit() {
+        mysql_library_init(0, 0, 0);
+    }
+
+    /// @brief Destructor.
+    ~MySqlLibraryInit() {
+        mysql_library_end();
+    }
+};
+
 } // end of isc::db namespace
 } // end of isc namespace