| 17 | constexpr auto time_tick{10ms}; |
| 18 | |
| 19 | unsigned rnd() { |
| 20 | static std::uniform_int_distribution<unsigned> distribution{ |
| 21 | 2U, 9U |
| 22 | }; // [delays] |
| 23 | static std::random_device engine; |
| 24 | static std::mt19937 noise{engine()}; |
| 25 | return distribution(noise); |
| 26 | } |
| 27 | |
| 28 | class alignas(128 /*std::hardware_destructive_interference_size*/) Guide { |
| 29 | inline static std::mutex cout_mutex; |