| Hristo Hristov | 92e2431 | 2024-01-07 16:01:03 | [diff] [blame] | 1 | //===----------------------------------------------------------------------===// |
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include <__config> |
| 10 | #include <cstdio> |
| 11 | #include <fstream> |
| 12 | |
| 13 | #if defined(_LIBCPP_WIN32API) |
| 14 | # define WIN32_LEAN_AND_MEAN |
| 15 | # define NOMINMAX |
| 16 | # include <io.h> |
| 17 | # include <windows.h> |
| 18 | #endif |
| 19 | |
| 20 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 21 | |
| 22 | #if defined(_LIBCPP_WIN32API) |
| 23 | |
| 24 | // Confirm that `HANDLE` is `void*` as implemented in `basic_filebuf` |
| 25 | static_assert(std::same_as<HANDLE, void*>); |
| 26 | |
| 27 | _LIBCPP_EXPORTED_FROM_ABI void* __filebuf_windows_native_handle(FILE* __file) noexcept { |
| 28 | // https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/get-osfhandle?view=msvc-170 |
| 29 | intptr_t __handle = _get_osfhandle(fileno(__file)); |
| 30 | if (__handle == -1) |
| 31 | return nullptr; |
| 32 | return reinterpret_cast<void*>(__handle); |
| 33 | } |
| 34 | |
| 35 | #endif |
| 36 | |
| 37 | _LIBCPP_END_NAMESPACE_STD |
