1*cdc20ff6SDimitry Andric //===----------------------------------------------------------------------===// 2*cdc20ff6SDimitry Andric // 3*cdc20ff6SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*cdc20ff6SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*cdc20ff6SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*cdc20ff6SDimitry Andric // 7*cdc20ff6SDimitry Andric //===----------------------------------------------------------------------===// 8*cdc20ff6SDimitry Andric 9*cdc20ff6SDimitry Andric #include <__config> 10*cdc20ff6SDimitry Andric #include <cstdio> 11*cdc20ff6SDimitry Andric #include <fstream> 12*cdc20ff6SDimitry Andric 13*cdc20ff6SDimitry Andric #if defined(_LIBCPP_WIN32API) 14*cdc20ff6SDimitry Andric # define WIN32_LEAN_AND_MEAN 15*cdc20ff6SDimitry Andric # define NOMINMAX 16*cdc20ff6SDimitry Andric # include <io.h> 17*cdc20ff6SDimitry Andric # include <windows.h> 18*cdc20ff6SDimitry Andric #endif 19*cdc20ff6SDimitry Andric 20*cdc20ff6SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 21*cdc20ff6SDimitry Andric 22*cdc20ff6SDimitry Andric #if defined(_LIBCPP_WIN32API) 23*cdc20ff6SDimitry Andric 24*cdc20ff6SDimitry Andric // Confirm that `HANDLE` is `void*` as implemented in `basic_filebuf` 25*cdc20ff6SDimitry Andric static_assert(std::same_as<HANDLE, void*>); 26*cdc20ff6SDimitry Andric __filebuf_windows_native_handle(FILE * __file)27*cdc20ff6SDimitry Andric_LIBCPP_EXPORTED_FROM_ABI void* __filebuf_windows_native_handle(FILE* __file) noexcept { 28*cdc20ff6SDimitry Andric // https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/get-osfhandle?view=msvc-170 29*cdc20ff6SDimitry Andric intptr_t __handle = _get_osfhandle(fileno(__file)); 30*cdc20ff6SDimitry Andric if (__handle == -1) 31*cdc20ff6SDimitry Andric return nullptr; 32*cdc20ff6SDimitry Andric return reinterpret_cast<void*>(__handle); 33*cdc20ff6SDimitry Andric } 34*cdc20ff6SDimitry Andric 35*cdc20ff6SDimitry Andric #endif 36*cdc20ff6SDimitry Andric 37*cdc20ff6SDimitry Andric _LIBCPP_END_NAMESPACE_STD 38