diff --git a/smmapdfw/rateconn_worker/Mutex.H b/smmapdfw/rateconn_worker/Mutex.H
new file mode 100644
index 0000000..6921347
--- /dev/null
+++ b/smmapdfw/rateconn_worker/Mutex.H
@@ -0,0 +1,16 @@
+#ifndef _MUTEX_H_
+#define _MUTEX_H_
+
+#include <pthread.h>
+
+
+class Mutex {
+public:
+   Mutex(pthread_mutex_t *mutex) : m_mutex(mutex) { pthread_mutex_lock(m_mutex); };
+   ~Mutex() { pthread_mutex_unlock(m_mutex); }
+private:
+	pthread_mutex_t *m_mutex;
+};
+
+
+#endif // _MUTEX_H_
\ No newline at end of file