[ceph.git] / ceph / src / boost / libs / context / include / boost / context / detail / exchange.hpp


//          Copyright Oliver Kowalke 2014.
// 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 BOOST_CONTEXT_DETAIL_EXCHANGE_H
#define BOOST_CONTEXT_DETAIL_EXCHANGE_H

#include <algorithm>
#include <utility>

#include <boost/config.hpp>

#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_PREFIX
#endif

namespace boost {
namespace context {
namespace detail {

template< typename T, typename U = T >
T exchange( T & t, U && nv) {
    T ov = std::move( t);
    t = std::forward< U >( nv);
    return ov;
}

}}}

#ifdef BOOST_HAS_ABI_HEADERS
#include BOOST_ABI_SUFFIX
#endif

#endif // BOOST_CONTEXT_DETAIL_EXCHANGE_H
Commit	Line	Data
7c673cae FG	1
	2	// Copyright Oliver Kowalke 2014.
	3	// Distributed under the Boost Software License, Version 1.0.
	4	// (See accompanying file LICENSE_1_0.txt or copy at
	5	// http://www.boost.org/LICENSE_1_0.txt)
	6
	7	#ifndef BOOST_CONTEXT_DETAIL_EXCHANGE_H
	8	#define BOOST_CONTEXT_DETAIL_EXCHANGE_H
	9
	10	#include <algorithm>
	11	#include <utility>
	12
	13	#include <boost/config.hpp>
	14
	15	#ifdef BOOST_HAS_ABI_HEADERS
	16	# include BOOST_ABI_PREFIX
	17	#endif
	18
	19	namespace boost {
	20	namespace context {
	21	namespace detail {
	22
	23	template< typename T, typename U = T >
	24	T exchange( T & t, U && nv) {
	25	T ov = std::move( t);
	26	t = std::forward< U >( nv);
	27	return ov;
	28	}
	29
	30	}}}
	31
	32	#ifdef BOOST_HAS_ABI_HEADERS
	33	#include BOOST_ABI_SUFFIX
	34	#endif
	35
	36	#endif // BOOST_CONTEXT_DETAIL_EXCHANGE_H