Simon Rozman
66f8a6c3b7
Visual Studio IDE really needs it on non-UTF-8 PCs. Signed-off-by: Simon Rozman <simon@rozman.si>
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
/*
|
|
SPDX-License-Identifier: MIT
|
|
Copyright © 2023 Amebis
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <memory>
|
|
|
|
namespace stdex
|
|
{
|
|
///
|
|
/// Noop deleter
|
|
///
|
|
template <class T>
|
|
struct no_delete {
|
|
constexpr no_delete() noexcept = default;
|
|
|
|
template <class T2, std::enable_if_t<std::is_convertible_v<T2*, T*>, int> = 0>
|
|
inline no_delete(const no_delete<T2>&) noexcept {}
|
|
|
|
inline void operator()(T* p) const noexcept { _Unreferenced_(p); }
|
|
};
|
|
|
|
///
|
|
/// Noop array deleter
|
|
///
|
|
template <class T>
|
|
struct no_delete<T[]> {
|
|
constexpr no_delete() noexcept = default;
|
|
|
|
template <class _Uty, std::enable_if_t<std::is_convertible_v<_Uty(*)[], T(*)[]>, int> = 0>
|
|
inline no_delete(const no_delete<_Uty[]>&) noexcept {}
|
|
|
|
template <class _Uty, std::enable_if_t<std::is_convertible_v<_Uty(*)[], T(*)[]>, int> = 0>
|
|
inline void operator()(_Uty* p) const noexcept { p; }
|
|
};
|
|
|
|
///
|
|
/// Create shared_ptr with noop deleter.
|
|
///
|
|
/// This may be used to wrap data on stack in a shared_ptr. However, be extra careful
|
|
/// that shared_ptr is completely dereferenced _before_ stack data goes out of scope.
|
|
///
|
|
/// \param[in] p Pointer to assign to shared_ptr
|
|
///
|
|
template <class T>
|
|
inline std::shared_ptr<T> make_shared_no_delete(_In_ T* p)
|
|
{
|
|
return std::shared_ptr<T>(p, no_delete<T>{});
|
|
}
|
|
}
|