projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 92f5a8d4 | 1 | /* Proposed SG14 status_code |
| f67539c2 | 2 | (C) 2018-2020 Niall Douglas <http://www.nedproductions.biz/> (5 commits) |
| 92f5a8d4 TL |
3 | File Created: Feb 2018 |
| 4 | ||
| 5 | ||
| 6 | Boost Software License - Version 1.0 - August 17th, 2003 | |
| 7 | ||
| 8 | Permission is hereby granted, free of charge, to any person or organization | |
| 9 | obtaining a copy of the software and accompanying documentation covered by | |
| 10 | this license (the "Software") to use, reproduce, display, distribute, | |
| 11 | execute, and transmit the Software, and to prepare derivative works of the | |
| 12 | Software, and to permit third-parties to whom the Software is furnished to | |
| 13 | do so, all subject to the following: | |
| 14 | ||
| 15 | The copyright notices in the Software and this entire statement, including | |
| 16 | the above license grant, this restriction and the following disclaimer, | |
| 17 | must be included in all copies of the Software, in whole or in part, and | |
| 18 | all derivative works of the Software, unless such copies or derivative | |
| 19 | works are solely in the form of machine-executable object code generated by | |
| 20 | a source language processor. | |
| 21 | ||
| 22 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 23 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 24 | FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT | |
| 25 | SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE | |
| 26 | FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, | |
| 27 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
| 28 | DEALINGS IN THE SOFTWARE. | |
| 29 | */ | |
| 30 | ||
| 31 | #ifndef BOOST_OUTCOME_SYSTEM_ERROR2_SYSTEM_CODE_HPP | |
| 32 | #define BOOST_OUTCOME_SYSTEM_ERROR2_SYSTEM_CODE_HPP | |
| 33 | ||
| f67539c2 | 34 | #ifndef BOOST_OUTCOME_SYSTEM_ERROR2_NOT_POSIX |
| 92f5a8d4 | 35 | #include "posix_code.hpp" |
| 20effc67 TL |
36 | #else |
| 37 | #include "quick_status_code_from_enum.hpp" | |
| f67539c2 | 38 | #endif |
| 92f5a8d4 TL |
39 | |
| 40 | #if defined(_WIN32) || defined(BOOST_OUTCOME_STANDARDESE_IS_IN_THE_HOUSE) | |
| 41 | #include "nt_code.hpp" | |
| 42 | #include "win32_code.hpp" | |
| 43 | // NOT "com_code.hpp" | |
| 44 | #endif | |
| 45 | ||
| 46 | BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE_BEGIN | |
| 47 | /*! An erased-mutable status code suitably large for all the system codes | |
| 48 | which can be returned on this system. | |
| 49 | ||
| 50 | For Windows, these might be: | |
| 51 | ||
| 52 | - `com_code` (`HRESULT`) [you need to include "com_code.hpp" explicitly for this] | |
| 53 | - `nt_code` (`LONG`) | |
| 54 | - `win32_code` (`DWORD`) | |
| 55 | ||
| 56 | For POSIX, `posix_code` is possible. | |
| 57 | ||
| 58 | You are guaranteed that `system_code` can be transported by the compiler | |
| 59 | in exactly two CPU registers. | |
| 60 | */ | |
| 61 | using system_code = status_code<erased<intptr_t>>; | |
| 62 | ||
| 63 | #ifndef NDEBUG | |
| 64 | static_assert(sizeof(system_code) == 2 * sizeof(void *), "system_code is not exactly two pointers in size!"); | |
| f67539c2 | 65 | static_assert(traits::is_move_bitcopying<system_code>::value, "system_code is not move bitcopying!"); |
| 92f5a8d4 TL |
66 | #endif |
| 67 | ||
| 68 | BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE_END | |
| 69 | ||
| 70 | #endif |