TLA  Line data    Source code

       1                 : //
       2                 : // Copyright (c) 2025 Vinnie Falco (vinnie.falco@gmail.com)
       3                 : // Copyright (c) 2026 Steve Gerbino
       4                 : // Copyright (c) 2026 Michael Vandeberg
       5                 : //
       6                 : // Distributed under the Boost Software License, Version 1.0. (See accompanying
       7                 : // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
       8                 : //
       9                 : // Official repository: https://github.com/cppalliance/corosio
      10                 : //
      11                 : 
      12                 : #ifndef BOOST_COROSIO_NATIVE_DETAIL_MAKE_ERR_HPP
      13                 : #define BOOST_COROSIO_NATIVE_DETAIL_MAKE_ERR_HPP
      14                 : 
      15                 : #include <boost/corosio/detail/config.hpp>
      16                 : #include <boost/corosio/detail/platform.hpp>
      17                 : #include <boost/capy/error.hpp>
      18                 : #include <system_error>
      19                 : 
      20                 : #if BOOST_COROSIO_POSIX
      21                 : #include <errno.h>
      22                 : #else
      23                 : #ifndef WIN32_LEAN_AND_MEAN
      24                 : #define WIN32_LEAN_AND_MEAN
      25                 : #endif
      26                 : #include <Windows.h>
      27                 : #endif
      28                 : 
      29                 : namespace boost::corosio::detail {
      30                 : 
      31                 : #if BOOST_COROSIO_POSIX
      32                 : 
      33                 : /** Convert a POSIX errno value to std::error_code.
      34                 : 
      35                 :     Maps ECANCELED to capy::error::canceled.
      36                 : 
      37                 :     @param errn The errno value.
      38                 :     @return The corresponding std::error_code.
      39                 : */
      40                 : inline std::error_code
      41 HIT          88 : make_err(int errn) noexcept
      42                 : {
      43              88 :     if (errn == 0)
      44 MIS           0 :         return {};
      45                 : 
      46 HIT          88 :     if (errn == ECANCELED)
      47 MIS           0 :         return capy::error::canceled;
      48                 : 
      49 HIT          88 :     return std::error_code(errn, std::system_category());
      50                 : }
      51                 : 
      52                 : #else
      53                 : 
      54                 : /** Convert a Windows error code to std::error_code.
      55                 : 
      56                 :     Maps ERROR_OPERATION_ABORTED and ERROR_CANCELLED to
      57                 :     capy::error::canceled, and ERROR_HANDLE_EOF to capy::error::eof.
      58                 :     Every other code passes through std::system_category().
      59                 : 
      60                 :     ERROR_NETNAME_DELETED (64) is deliberately not mapped here: IOCP
      61                 :     delivers it both for a local closesocket() that cancels pending I/O
      62                 :     and for a remote RST, so it can only be disambiguated per operation
      63                 :     kind at the IOCP decode sites (see iocp_make_err in win_overlapped_op).
      64                 : 
      65                 :     @param dwError The Windows error code (DWORD).
      66                 :     @return The corresponding std::error_code.
      67                 : */
      68                 : inline std::error_code
      69                 : make_err(unsigned long dwError) noexcept
      70                 : {
      71                 :     if (dwError == 0)
      72                 :         return {};
      73                 : 
      74                 :     if (dwError == ERROR_OPERATION_ABORTED || dwError == ERROR_CANCELLED)
      75                 :         return capy::error::canceled;
      76                 : 
      77                 :     if (dwError == ERROR_HANDLE_EOF)
      78                 :         return capy::error::eof;
      79                 : 
      80                 :     return std::error_code(static_cast<int>(dwError), std::system_category());
      81                 : }
      82                 : 
      83                 : #endif
      84                 : 
      85                 : } // namespace boost::corosio::detail
      86                 : 
      87                 : #endif