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author | Egor Tensin <Egor.Tensin@gmail.com> | 2020-10-14 01:57:40 +0300 |
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committer | Egor Tensin <Egor.Tensin@gmail.com> | 2020-10-14 01:57:40 +0300 |
commit | 0e439fb2d229808a8d879bfefcf371099b522479 (patch) | |
tree | f2fc08d91f11cfae1dbd618be317b8d041f48903 /include | |
parent | initial commit (diff) | |
download | winapi-common-0e439fb2d229808a8d879bfefcf371099b522479.tar.gz winapi-common-0e439fb2d229808a8d879bfefcf371099b522479.zip |
add Handle class
It's derived from various projects of mine.
Diffstat (limited to 'include')
-rw-r--r-- | include/winapi/handle.hpp | 73 | ||||
-rw-r--r-- | include/winapi/workarounds.hpp | 8 |
2 files changed, 81 insertions, 0 deletions
diff --git a/include/winapi/handle.hpp b/include/winapi/handle.hpp new file mode 100644 index 0000000..9e9661b --- /dev/null +++ b/include/winapi/handle.hpp @@ -0,0 +1,73 @@ +// Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com> +// This file is part of the "winapi-common" project. +// For details, see https://github.com/egor-tensin/winapi-common. +// Distributed under the MIT License. + +#pragma once + +#include "workarounds.hpp" + +#include <boost/config.hpp> + +#include <windows.h> + +#include <cassert> +#include <memory> +#include <utility> + +namespace winapi { + +class Handle { +public: + Handle() = default; + + explicit Handle(HANDLE raw) + : impl{raw} + { } + + Handle(Handle&& other) BOOST_NOEXCEPT_OR_NOTHROW { + swap(other); + } + + Handle& operator=(Handle other) BOOST_NOEXCEPT_OR_NOTHROW { + swap(other); + return *this; + } + + void swap(Handle& other) BOOST_NOEXCEPT_OR_NOTHROW { + using std::swap; + swap(impl, other.impl); + } + + explicit operator HANDLE() const { return impl.get(); } + +private: + struct Close { + void operator()(HANDLE raw) const { + if (raw == NULL || raw == INVALID_HANDLE_VALUE) + return; + const auto ret = ::CloseHandle(raw); + assert(ret); + WINAPI_UNUSED_PARAMETER(ret); + } + }; + + std::unique_ptr<void, Close> impl; + + Handle(const Handle&) = delete; +}; + +inline void swap(Handle& a, Handle& b) BOOST_NOEXCEPT_OR_NOTHROW { + a.swap(b); +} + +} + +namespace std { + +template <> +inline void swap(winapi::Handle& a, winapi::Handle& b) BOOST_NOEXCEPT_OR_NOTHROW { + a.swap(b); +} + +} // namespace std diff --git a/include/winapi/workarounds.hpp b/include/winapi/workarounds.hpp new file mode 100644 index 0000000..a5a3607 --- /dev/null +++ b/include/winapi/workarounds.hpp @@ -0,0 +1,8 @@ +// Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com> +// This file is part of the "winapi-common" project. +// For details, see https://github.com/egor-tensin/winapi-common. +// Distributed under the MIT License. + +#pragma once + +#define WINAPI_UNUSED_PARAMETER(...) (void)(__VA_ARGS__) |