turtle/include/turtle/detail/functor.hpp
Alexander Grund 72e0daae5c Implement and use simple singleton
Based on old boost::unit_test::singleton
2018-11-22 14:41:11 +01:00

52 lines
1.1 KiB
C++

// http://turtle.sourceforge.net
//
// Copyright Mathieu Champlon 2012
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef MOCK_FUNCTOR_HPP_INCLUDED
#define MOCK_FUNCTOR_HPP_INCLUDED
#include "../config.hpp"
#include "function.hpp"
#include "mutex.hpp"
#include "singleton.hpp"
namespace mock
{
namespace detail
{
class functor_mutex_t :
public singleton< functor_mutex_t >,
public mutex
{
MOCK_SINGLETON_CONS( functor_mutex_t );
};
MOCK_SINGLETON_INST( functor_mutex )
template< typename Signature >
struct functor : function< Signature >
{
functor()
{
scoped_lock _( functor_mutex );
static functor* f = 0;
if( f )
{
*this = *f;
f = 0;
functor_mutex.unlock();
}
else
{
functor_mutex.lock();
f = this;
}
}
};
}
} // mock
#endif // MOCK_FUNCTOR_HPP_INCLUDED