| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2025 Vinnie Falco (vinnie dot falco at gmail dot com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/cppalliance/beast2 | ||
| 8 | // | ||
| 9 | |||
| 10 | #include <boost/beast2/logger.hpp> | ||
| 11 | #include <iostream> | ||
| 12 | #include <mutex> | ||
| 13 | #include <unordered_map> | ||
| 14 | #include <vector> | ||
| 15 | |||
| 16 | namespace boost { | ||
| 17 | namespace beast2 { | ||
| 18 | |||
| 19 | ✗ | section:: | |
| 20 | section() noexcept = default; | ||
| 21 | |||
| 22 | void | ||
| 23 | ✗ | section:: | |
| 24 | write( | ||
| 25 | int level, | ||
| 26 | std::string s) | ||
| 27 | { | ||
| 28 | (void)level; | ||
| 29 | // VFALCO NO! This is just for demo purposes | ||
| 30 | static std::mutex m; | ||
| 31 | ✗ | std::lock_guard<std::mutex> lock(m); | |
| 32 | ✗ | std::cerr << s << std::endl; | |
| 33 | ✗ | } | |
| 34 | |||
| 35 | ✗ | section:: | |
| 36 | ✗ | section(core::string_view name) | |
| 37 | ✗ | : impl_(std::make_shared<impl>()) | |
| 38 | { | ||
| 39 | ✗ | impl_->name = name; | |
| 40 | ✗ | } | |
| 41 | |||
| 42 | //------------------------------------------------ | ||
| 43 | |||
| 44 | struct log_sections::impl | ||
| 45 | { | ||
| 46 | struct hash | ||
| 47 | { | ||
| 48 | std::size_t | ||
| 49 | ✗ | operator()(core::string_view const& s) const noexcept | |
| 50 | { | ||
| 51 | #if SIZE_MAX == 4294967295U | ||
| 52 | std::size_t hash = 2166136261; // FNV offset basis | ||
| 53 | for (unsigned char c : s) | ||
| 54 | hash ^= c, hash *= 16777619; // FNV prime | ||
| 55 | #else | ||
| 56 | ✗ | std::size_t hash = 1469598103934665603; // FNV offset basis | |
| 57 | ✗ | for (unsigned char c : s) | |
| 58 | ✗ | hash ^= c, hash *= 1099511628211; // FNV prime | |
| 59 | #endif | ||
| 60 | ✗ | return hash; | |
| 61 | } | ||
| 62 | }; | ||
| 63 | |||
| 64 | std::mutex m; | ||
| 65 | std::unordered_map<core::string_view, section, hash> map; | ||
| 66 | std::vector<section> vec; | ||
| 67 | }; | ||
| 68 | |||
| 69 | ✗ | log_sections:: | |
| 70 | ~log_sections() | ||
| 71 | { | ||
| 72 | ✗ | delete impl_; | |
| 73 | ✗ | } | |
| 74 | |||
| 75 | ✗ | log_sections:: | |
| 76 | ✗ | log_sections() | |
| 77 | ✗ | : impl_(new impl) | |
| 78 | { | ||
| 79 | ✗ | } | |
| 80 | |||
| 81 | section | ||
| 82 | ✗ | log_sections:: | |
| 83 | get(core::string_view name) | ||
| 84 | { | ||
| 85 | // contention for this lock should be minimal, | ||
| 86 | // as most sections are created at startup. | ||
| 87 | ✗ | std::lock_guard<std::mutex> lock(impl_->m); | |
| 88 | ✗ | auto it = impl_->map.find(name); | |
| 89 | ✗ | if(it != impl_->map.end()) | |
| 90 | ✗ | return it->second; | |
| 91 | // the map stores a string_view; make sure | ||
| 92 | // the string data it references does not | ||
| 93 | // move after creation. | ||
| 94 | ✗ | auto v = section(name); | |
| 95 | ✗ | impl_->map.emplace( | |
| 96 | ✗ | core::string_view(v.impl_->name), v); | |
| 97 | ✗ | impl_->vec.push_back(v); | |
| 98 | ✗ | return v; | |
| 99 | ✗ | } | |
| 100 | |||
| 101 | auto | ||
| 102 | ✗ | log_sections:: | |
| 103 | get_sections() const noexcept -> | ||
| 104 | std::vector<section> | ||
| 105 | { | ||
| 106 | ✗ | std::lock_guard<std::mutex> lock(impl_->m); | |
| 107 | ✗ | return impl_->vec; | |
| 108 | ✗ | } | |
| 109 | |||
| 110 | } // beast2 | ||
| 111 | } // boost | ||
| 112 |