projects / ceph.git / blame
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|---|---|---|
| 11fdf7f2 TL |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
| 2 | // vim: ts=8 sw=2 smarttab | |
| 3 | /* | |
| 4 | * Ceph - scalable distributed file system | |
| 5 | * | |
| 6 | * Copyright (C) 2018 Red Hat Inc. | |
| 7 | * | |
| 8 | * This is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU Lesser General Public | |
| 10 | * License version 2.1, as published by the Free Software | |
| 11 | * Foundation. See file COPYING. | |
| 12 | * | |
| 13 | */ | |
| 14 | ||
| 15 | #ifndef CEPH_SUBSYS_TYPES_H | |
| 16 | #define CEPH_SUBSYS_TYPES_H | |
| 17 | ||
| 18 | #include <algorithm> | |
| 19 | #include <array> | |
| 39ae355f | 20 | #include <cstdint> |
| 11fdf7f2 TL |
21 | |
| 22 | enum ceph_subsys_id_t { | |
| 23 | ceph_subsys_, // default | |
| 24 | #define SUBSYS(name, log, gather) \ | |
| 25 | ceph_subsys_##name, | |
| 26 | #define DEFAULT_SUBSYS(log, gather) | |
| 27 | #include "common/subsys.h" | |
| 28 | #undef SUBSYS | |
| 29 | #undef DEFAULT_SUBSYS | |
| 30 | ceph_subsys_max | |
| 31 | }; | |
| 32 | ||
| 33 | constexpr static std::size_t ceph_subsys_get_num() { | |
| 34 | return static_cast<std::size_t>(ceph_subsys_max); | |
| 35 | } | |
| 36 | ||
| 37 | struct ceph_subsys_item_t { | |
| 38 | const char* name; | |
| 39 | uint8_t log_level; | |
| 40 | uint8_t gather_level; | |
| 41 | }; | |
| 42 | ||
| 43 | constexpr static std::array<ceph_subsys_item_t, ceph_subsys_get_num()> | |
| 44 | ceph_subsys_get_as_array() { | |
| 45 | #define SUBSYS(name, log, gather) \ | |
| 46 | ceph_subsys_item_t{ #name, log, gather }, | |
| 47 | #define DEFAULT_SUBSYS(log, gather) \ | |
| 48 | ceph_subsys_item_t{ "none", log, gather }, | |
| 49 | ||
| 50 | return { | |
| 51 | #include "common/subsys.h" | |
| 52 | }; | |
| 53 | #undef SUBSYS | |
| 54 | #undef DEFAULT_SUBSYS | |
| 55 | } | |
| 56 | ||
| 57 | constexpr static std::uint8_t | |
| 58 | ceph_subsys_get_max_default_level(const std::size_t subidx) { | |
| 59 | const auto item = ceph_subsys_get_as_array()[subidx]; | |
| 60 | return std::max(item.log_level, item.gather_level); | |
| 61 | } | |
| 62 | ||
| 63 | // Compile time-capable version of std::strlen. Resorting to own | |
| 64 | // implementation only because C++17 doesn't mandate constexpr | |
| 65 | // on the standard one. | |
| 66 | constexpr static std::size_t strlen_ct(const char* const s) { | |
| 67 | std::size_t l = 0; | |
| 68 | while (s[l] != '\0') { | |
| 69 | ++l; | |
| 70 | } | |
| 71 | return l; | |
| 72 | } | |
| 73 | ||
| 74 | constexpr static std::size_t ceph_subsys_max_name_length() { | |
| 75 | return std::max({ | |
| 76 | #define SUBSYS(name, log, gather) \ | |
| 77 | strlen_ct(#name), | |
| 78 | #define DEFAULT_SUBSYS(log, gather) \ | |
| 79 | strlen_ct("none"), | |
| 80 | #include "common/subsys.h" | |
| 81 | #undef SUBSYS | |
| 82 | #undef DEFAULT_SUBSYS | |
| 83 | }); | |
| 84 | } | |
| 85 | ||
| 86 | #endif // CEPH_SUBSYS_TYPES_H | |
| 87 |