boost/winapi/handles.hpp

0001 /*
0002  * Copyright 2010 Vicente J. Botet Escriba
0003  * Copyright 2015 Andrey Semashev
0004  *
0005  * Distributed under the Boost Software License, Version 1.0.
0006  * See http://www.boost.org/LICENSE_1_0.txt
0007  */
0008
0009 #ifndef BOOST_WINAPI_HANDLES_HPP_INCLUDED_
0010 #define BOOST_WINAPI_HANDLES_HPP_INCLUDED_
0011
0012 #include <boost/winapi/basic_types.hpp>
0013 #include <boost/winapi/detail/header.hpp>
0014
0015 #ifdef BOOST_HAS_PRAGMA_ONCE
0016 #pragma once
0017 #endif
0018
0019 #if !defined(BOOST_USE_WINDOWS_H)
0020 extern "C" {
0021 BOOST_WINAPI_IMPORT_EXCEPT_WM boost::winapi::BOOL_ BOOST_WINAPI_WINAPI_CC
0022 CloseHandle(boost::winapi::HANDLE_ handle);
0023
0024 BOOST_WINAPI_IMPORT_EXCEPT_WM boost::winapi::BOOL_ BOOST_WINAPI_WINAPI_CC
0025 DuplicateHandle(
0026     boost::winapi::HANDLE_ hSourceProcessHandle,
0027     boost::winapi::HANDLE_ hSourceHandle,
0028     boost::winapi::HANDLE_ hTargetProcessHandle,
0029     boost::winapi::HANDLE_* lpTargetHandle,
0030     boost::winapi::DWORD_ dwDesiredAccess,
0031     boost::winapi::BOOL_ bInheritHandle,
0032     boost::winapi::DWORD_ dwOptions);
0033 } // extern "C"
0034 #endif
0035
0036 #if (!defined(BOOST_USE_WINDOWS_H) || (defined(BOOST_WINAPI_IS_MINGW_W64) && (__MINGW64_VERSION_MAJOR >= 6) && (__MINGW64_VERSION_MAJOR < 9))) && \
0037     (BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN10 && (BOOST_WINAPI_PARTITION_APP || BOOST_WINAPI_PARTITION_SYSTEM))
0038 extern "C" {
0039 // Older MinGW-w64 do not have this declaration. It is present when __MINGW64_VERSION_MAJOR is 9 or greater, which is the case
0040 // in 8.0.1 (specifically, not earlier or later 8.x) and 9.0.0 and onwards. Library exports seem to be present since 6.0.0.
0041 BOOST_WINAPI_IMPORT boost::winapi::BOOL_ BOOST_WINAPI_WINAPI_CC
0042 CompareObjectHandles(
0043     boost::winapi::HANDLE_ hFirstObjectHandle,
0044     boost::winapi::HANDLE_ hSecondObjectHandle);
0045 } // extern "C"
0046 #endif
0047
0048 namespace boost {
0049 namespace winapi {
0050
0051 using ::CloseHandle;
0052 using ::DuplicateHandle;
0053
0054 #if (!defined(BOOST_WINAPI_IS_MINGW_W64) || (__MINGW64_VERSION_MAJOR >= 6)) && \
0055     (BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN10 && (BOOST_WINAPI_PARTITION_APP || BOOST_WINAPI_PARTITION_SYSTEM))
0056 using ::CompareObjectHandles;
0057 #endif
0058
0059 // Note: MSVC-14.1 does not interpret INVALID_HANDLE_VALUE_ initializer as a constant expression
0060 #if defined(BOOST_USE_WINDOWS_H)
0061 BOOST_CONSTEXPR_OR_CONST DWORD_ DUPLICATE_CLOSE_SOURCE_ = DUPLICATE_CLOSE_SOURCE;
0062 BOOST_CONSTEXPR_OR_CONST DWORD_ DUPLICATE_SAME_ACCESS_ = DUPLICATE_SAME_ACCESS;
0063 const HANDLE_ INVALID_HANDLE_VALUE_ = INVALID_HANDLE_VALUE;
0064 #else
0065 BOOST_CONSTEXPR_OR_CONST DWORD_ DUPLICATE_CLOSE_SOURCE_ = 1;
0066 BOOST_CONSTEXPR_OR_CONST DWORD_ DUPLICATE_SAME_ACCESS_ = 2;
0067 const HANDLE_ INVALID_HANDLE_VALUE_ = (HANDLE_)(-1);
0068 #endif
0069
0070 BOOST_CONSTEXPR_OR_CONST DWORD_ duplicate_close_source = DUPLICATE_CLOSE_SOURCE_;
0071 BOOST_CONSTEXPR_OR_CONST DWORD_ duplicate_same_access = DUPLICATE_SAME_ACCESS_;
0072 // Note: The "unused" attribute here should not be necessary because the variable is a constant.
0073 //       However, MinGW gcc 5.3 spams warnings about this particular constant.
0074 const HANDLE_ invalid_handle_value BOOST_ATTRIBUTE_UNUSED = INVALID_HANDLE_VALUE_;
0075
0076 }
0077 }
0078
0079 #include <boost/winapi/detail/footer.hpp>
0080
0081 #endif // BOOST_WINAPI_HANDLES_HPP_INCLUDED_