boost/signals2/dummy_mutex.hpp

0001 // A model of the Lockable concept from Boost.Thread which
0002 // does nothing.  It can be passed as the Mutex template parameter
0003 // for a signal, if the user wishes to disable thread-safety
0004 // (presumably for performance reasons).
0005
0006 // Copyright Frank Mori Hess 2008.
0007 // Distributed under the Boost Software License, Version
0008 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
0009 // http://www.boost.org/LICENSE_1_0.txt)
0010
0011 // See http://www.boost.org/libs/signals2 for library home page.
0012
0013 #ifndef BOOST_SIGNALS2_DUMMY_MUTEX_HPP
0014 #define BOOST_SIGNALS2_DUMMY_MUTEX_HPP
0015
0016 namespace boost {
0017   namespace signals2 {
0018     class dummy_mutex
0019     {
0020     public:
0021       void lock() {}
0022       bool try_lock() {return true;}
0023       void unlock() {}
0024     };
0025   } // end namespace signals2
0026 } // end namespace boost
0027
0028 #endif // BOOST_SIGNALS2_DUMMY_MUTEX_HPP