Index/include / boost / corosio / native / detail / make_err.hpp

include/boost/corosio/native/detail/make_err.hpp

77.8% Lines (7/9) 100.0% List of functions (1/1) 66.7% Branches (4/6)
[ ] prev/next file n p prev/next uncovered line
make_err.hpp
f(x) Functions (1)
Function Calls Lines Branches Blocks
boost::corosio::detail::make_err(int) :41 350x 77.8% 66.7% 75.0%
Line Branch TLA Hits Source Code
1 //
2 // Copyright (c) 2025 Vinnie Falco ([email protected])
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 350x make_err(int errn) noexcept
42 {
43
1/2
✓ Branch 0 taken 350 times.
✗ Branch 1 not taken.
 350x if (errn == 0)
44 ✗ return {};
45
46
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 350 times.
 350x if (errn == ECANCELED)
47 ✗ return capy::error::canceled;
48
49 // Part of the portable wait contract; system_category's condition
50 // mapping varies by C++ runtime.
51
2/2
✓ Branch 0 taken 14 times.
✓ Branch 1 taken 336 times.
 350x if (errn == ENOTSUP)
52 14x return std::make_error_code(std::errc::operation_not_supported);
53
54 336x return std::error_code(errn, std::system_category());
55 350x }
56
57 #else
58
59 /** Convert a Windows error code to std::error_code.
60
61 Maps ERROR_OPERATION_ABORTED and ERROR_CANCELLED to
62 capy::error::canceled, and ERROR_HANDLE_EOF to capy::error::eof.
63 Every other code passes through std::system_category().
64
65 ERROR_NETNAME_DELETED (64) is deliberately not mapped here: IOCP
66 delivers it both for a local closesocket() that cancels pending I/O
67 and for a remote RST, so it can only be disambiguated per operation
68 kind at the IOCP decode sites (see iocp_make_err in win_overlapped_op).
69
70 @param dwError The Windows error code (DWORD).
71 @return The corresponding std::error_code.
72 */
73 inline std::error_code
74 make_err(unsigned long dwError) noexcept
75 {
76 if (dwError == 0)
77 return {};
78
79 if (dwError == ERROR_OPERATION_ABORTED || dwError == ERROR_CANCELLED)
80 return capy::error::canceled;
81
82 if (dwError == ERROR_HANDLE_EOF)
83 return capy::error::eof;
84
85 // Part of the portable wait, adoption, bind, and seek contracts;
86 // system_category's condition mapping for WSA codes varies by
87 // toolchain.
88 if (dwError == WSAEOPNOTSUPP)
89 return std::make_error_code(std::errc::operation_not_supported);
90 if (dwError == WSAENOTSOCK)
91 return std::make_error_code(std::errc::not_a_socket);
92 if (dwError == WSAEAFNOSUPPORT)
93 return std::make_error_code(
94 std::errc::address_family_not_supported);
95 if (dwError == WSAEPROTOTYPE)
96 return std::make_error_code(std::errc::wrong_protocol_type);
97 if (dwError == WSAEADDRINUSE)
98 return std::make_error_code(std::errc::address_in_use);
99 if (dwError == WSAEADDRNOTAVAIL)
100 return std::make_error_code(std::errc::address_not_available);
101 if (dwError == ERROR_NEGATIVE_SEEK)
102 return std::make_error_code(std::errc::invalid_argument);
103
104 return std::error_code(static_cast<int>(dwError), std::system_category());
105 }
106
107 #endif
108
109 } // namespace boost::corosio::detail
110
111 #endif
112