diff options
Diffstat (limited to 'boost/thread/lockable_traits.hpp')
| -rw-r--r-- | boost/thread/lockable_traits.hpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/boost/thread/lockable_traits.hpp b/boost/thread/lockable_traits.hpp index 8a17ae72d3..f46c886629 100644 --- a/boost/thread/lockable_traits.hpp +++ b/boost/thread/lockable_traits.hpp @@ -11,7 +11,12 @@ #include <boost/assert.hpp> #include <boost/detail/workaround.hpp> +#include <boost/type_traits/integral_constant.hpp> +#ifdef BOOST_NO_CXX11_SFINAE_EXPR #include <boost/type_traits/is_class.hpp> +#else +#include <boost/type_traits/declval.hpp> +#endif #include <boost/config/abi_prefix.hpp> @@ -33,6 +38,7 @@ namespace boost #ifndef BOOST_THREAD_NO_AUTO_DETECT_MUTEX_TYPES namespace detail { +#ifdef BOOST_NO_CXX11_SFINAE_EXPR #define BOOST_THREAD_DEFINE_HAS_MEMBER_CALLED(member_name) \ template<typename T, bool=boost::is_class<T>::value> \ struct has_member_called_##member_name \ @@ -142,6 +148,31 @@ namespace boost BOOST_STATIC_CONSTANT( bool,value=sizeof(has_member_try_lock<T>::has_member(&T::try_lock))==sizeof(true_type)); }; +#else + template<typename T,typename Enabled=void> + struct has_member_lock : false_type {}; + + template<typename T> + struct has_member_lock<T, + decltype(void(boost::declval<T&>().lock())) + > : true_type {}; + + template<typename T,typename Enabled=void> + struct has_member_unlock : false_type {}; + + template<typename T> + struct has_member_unlock<T, + decltype(void(boost::declval<T&>().unlock())) + > : true_type {}; + + template<typename T,typename Enabled=bool> + struct has_member_try_lock : false_type {}; + + template<typename T> + struct has_member_try_lock<T, + decltype(bool(boost::declval<T&>().try_lock())) + > : true_type {}; +#endif } |