25 #ifndef SFML_MUTEX_HPP    26 #define SFML_MUTEX_HPP    31 #include <SFML/System/Export.hpp>    32 #include <SFML/System/NonCopyable.hpp>    88     priv::MutexImpl* m_mutexImpl; 
    94 #endif // SFML_MUTEX_HPP Blocks concurrent access to shared resources from multiple threads. 
Utility class that makes any derived class non-copyable.