// Now that we sometimes change the database object, Db object
// creation/returning needs a mutex. You should only hold this if you're
// copying or changing the mDb object.
Mutex mDbMutex;
// Now that we sometimes change the database object, Db object
// creation/returning needs a mutex. You should only hold this if you're
// copying or changing the mDb object.
Mutex mDbMutex;