40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
#ifndef FURVM_DETAIL_HANDLE_HPP
|
|
#define FURVM_DETAIL_HANDLE_HPP
|
|
|
|
#include <functional>
|
|
#include <type_traits>
|
|
|
|
namespace furvm {
|
|
namespace detail {
|
|
|
|
/**
|
|
* @brief Default specialization for header_has_refcount type trait.
|
|
*/
|
|
template <typename Header, typename = void>
|
|
struct header_has_refcount : std::false_type {};
|
|
|
|
/**
|
|
* @brief Specialization for header_has_refcount type trait.
|
|
*/
|
|
template <typename Header>
|
|
struct header_has_refcount<Header,
|
|
std::void_t<decltype(std::declval<Header&>().acquire()),
|
|
decltype(std::declval<Header&>().release()),
|
|
decltype(std::declval<Header&>().reference_count())>> : std::true_type {};
|
|
|
|
/**
|
|
* @brief An alias for header_has_refcount's value.
|
|
*/
|
|
template <typename Header>
|
|
static constexpr auto header_has_refcount_v = header_has_refcount<Header>::value;
|
|
|
|
template <typename Handle, typename IdHash = std::hash<typename Handle::id_type>>
|
|
struct handle_hash {
|
|
std::size_t operator()(const Handle& handle) const { return IdHash{}(handle.id()); }
|
|
};
|
|
|
|
} // namespace detail
|
|
} // namespace furvm
|
|
|
|
#endif // FURVM_DETAIL_HANDLE_HPP
|