. /include/boost/corosio /native /detail /make_err.hpp
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1   // 1   //
2   // Copyright (c) 2025 Vinnie Falco (vinnie.falco@gmail.com) 2   // Copyright (c) 2025 Vinnie Falco (vinnie.falco@gmail.com)
3   // Copyright (c) 2026 Steve Gerbino 3   // Copyright (c) 2026 Steve Gerbino
4   // 4   //
5   // Distributed under the Boost Software License, Version 1.0. (See accompanying 5   // Distributed under the Boost Software License, Version 1.0. (See accompanying
6   // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 6   // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7   // 7   //
8   // Official repository: https://github.com/cppalliance/corosio 8   // Official repository: https://github.com/cppalliance/corosio
9   // 9   //
10   10  
11   #ifndef BOOST_COROSIO_NATIVE_DETAIL_MAKE_ERR_HPP 11   #ifndef BOOST_COROSIO_NATIVE_DETAIL_MAKE_ERR_HPP
12   #define BOOST_COROSIO_NATIVE_DETAIL_MAKE_ERR_HPP 12   #define BOOST_COROSIO_NATIVE_DETAIL_MAKE_ERR_HPP
13   13  
14   #include <boost/corosio/detail/config.hpp> 14   #include <boost/corosio/detail/config.hpp>
15   #include <boost/corosio/detail/platform.hpp> 15   #include <boost/corosio/detail/platform.hpp>
16   #include <boost/capy/error.hpp> 16   #include <boost/capy/error.hpp>
17   #include <system_error> 17   #include <system_error>
18   18  
19   #if BOOST_COROSIO_POSIX 19   #if BOOST_COROSIO_POSIX
20   #include <errno.h> 20   #include <errno.h>
21   #else 21   #else
22   #ifndef WIN32_LEAN_AND_MEAN 22   #ifndef WIN32_LEAN_AND_MEAN
23   #define WIN32_LEAN_AND_MEAN 23   #define WIN32_LEAN_AND_MEAN
24   #endif 24   #endif
25   #include <Windows.h> 25   #include <Windows.h>
26   #endif 26   #endif
27   27  
28   namespace boost::corosio::detail { 28   namespace boost::corosio::detail {
29   29  
30   #if BOOST_COROSIO_POSIX 30   #if BOOST_COROSIO_POSIX
31   31  
32   /** Convert a POSIX errno value to std::error_code. 32   /** Convert a POSIX errno value to std::error_code.
33   33  
34   Maps ECANCELED to capy::error::canceled. 34   Maps ECANCELED to capy::error::canceled.
35   35  
36   @param errn The errno value. 36   @param errn The errno value.
37   @return The corresponding std::error_code. 37   @return The corresponding std::error_code.
38   */ 38   */
39   inline std::error_code 39   inline std::error_code
HITCBC 40   41 make_err(int errn) noexcept 40   40 make_err(int errn) noexcept
41   { 41   {
HITCBC 42   41 if (errn == 0) 42   40 if (errn == 0)
MISUBC 43   ✗ return {}; 43   ✗ return {};
44   44  
HITCBC 45   41 if (errn == ECANCELED) 45   40 if (errn == ECANCELED)
MISUBC 46   ✗ return capy::error::canceled; 46   ✗ return capy::error::canceled;
47   47  
HITCBC 48   41 return std::error_code(errn, std::system_category()); 48   40 return std::error_code(errn, std::system_category());
49   } 49   }
50   50  
51   #else 51   #else
52   52  
53   /** Convert a Windows error code to std::error_code. 53   /** Convert a Windows error code to std::error_code.
54   54  
55   Maps ERROR_OPERATION_ABORTED, ERROR_CANCELLED, and 55   Maps ERROR_OPERATION_ABORTED, ERROR_CANCELLED, and
56   ERROR_NETNAME_DELETED to capy::error::canceled. 56   ERROR_NETNAME_DELETED to capy::error::canceled.
57   Maps ERROR_HANDLE_EOF to capy::error::eof. 57   Maps ERROR_HANDLE_EOF to capy::error::eof.
58   58  
59   ERROR_NETNAME_DELETED (64) is what IOCP actually delivers 59   ERROR_NETNAME_DELETED (64) is what IOCP actually delivers
60   when closesocket() cancels pending overlapped I/O, despite 60   when closesocket() cancels pending overlapped I/O, despite
61   MSDN documenting ERROR_OPERATION_ABORTED for that case. 61   MSDN documenting ERROR_OPERATION_ABORTED for that case.
62   62  
63   @param dwError The Windows error code (DWORD). 63   @param dwError The Windows error code (DWORD).
64   @return The corresponding std::error_code. 64   @return The corresponding std::error_code.
65   */ 65   */
66   inline std::error_code 66   inline std::error_code
67   make_err(unsigned long dwError) noexcept 67   make_err(unsigned long dwError) noexcept
68   { 68   {
69   if (dwError == 0) 69   if (dwError == 0)
70   return {}; 70   return {};
71   71  
72   if (dwError == ERROR_OPERATION_ABORTED || dwError == ERROR_CANCELLED || 72   if (dwError == ERROR_OPERATION_ABORTED || dwError == ERROR_CANCELLED ||
73   dwError == ERROR_NETNAME_DELETED) 73   dwError == ERROR_NETNAME_DELETED)
74   return capy::error::canceled; 74   return capy::error::canceled;
75   75  
76   if (dwError == ERROR_HANDLE_EOF) 76   if (dwError == ERROR_HANDLE_EOF)
77   return capy::error::eof; 77   return capy::error::eof;
78   78  
79   return std::error_code(static_cast<int>(dwError), std::system_category()); 79   return std::error_code(static_cast<int>(dwError), std::system_category());
80   } 80   }
81   81  
82   #endif 82   #endif
83   83  
84   } // namespace boost::corosio::detail 84   } // namespace boost::corosio::detail
85   85  
86   #endif 86   #endif