1*1db9f3b2SDimitry Andric //===----------------------------------------------------------------------===// 2*1db9f3b2SDimitry Andric // 3*1db9f3b2SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*1db9f3b2SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*1db9f3b2SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*1db9f3b2SDimitry Andric // 7*1db9f3b2SDimitry Andric //===----------------------------------------------------------------------===// 8*1db9f3b2SDimitry Andric 9*1db9f3b2SDimitry Andric #include <__config> 10*1db9f3b2SDimitry Andric #include <cstdio> 11*1db9f3b2SDimitry Andric #include <fstream> 12*1db9f3b2SDimitry Andric 13*1db9f3b2SDimitry Andric #if defined(_LIBCPP_WIN32API) 14*1db9f3b2SDimitry Andric # define WIN32_LEAN_AND_MEAN 15*1db9f3b2SDimitry Andric # define NOMINMAX 16*1db9f3b2SDimitry Andric # include <io.h> 17*1db9f3b2SDimitry Andric # include <windows.h> 18*1db9f3b2SDimitry Andric #endif 19*1db9f3b2SDimitry Andric 20*1db9f3b2SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 21*1db9f3b2SDimitry Andric 22*1db9f3b2SDimitry Andric #if defined(_LIBCPP_WIN32API) 23*1db9f3b2SDimitry Andric 24*1db9f3b2SDimitry Andric // Confirm that `HANDLE` is `void*` as implemented in `basic_filebuf` 25*1db9f3b2SDimitry Andric static_assert(std::same_as<HANDLE, void*>); 26*1db9f3b2SDimitry Andric __filebuf_windows_native_handle(FILE * __file)27*1db9f3b2SDimitry Andric_LIBCPP_EXPORTED_FROM_ABI void* __filebuf_windows_native_handle(FILE* __file) noexcept { 28*1db9f3b2SDimitry Andric // https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/get-osfhandle?view=msvc-170 29*1db9f3b2SDimitry Andric intptr_t __handle = _get_osfhandle(fileno(__file)); 30*1db9f3b2SDimitry Andric if (__handle == -1) 31*1db9f3b2SDimitry Andric return nullptr; 32*1db9f3b2SDimitry Andric return reinterpret_cast<void*>(__handle); 33*1db9f3b2SDimitry Andric } 34*1db9f3b2SDimitry Andric 35*1db9f3b2SDimitry Andric #endif 36*1db9f3b2SDimitry Andric 37*1db9f3b2SDimitry Andric _LIBCPP_END_NAMESPACE_STD 38