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• New Lightweight C++ Logging Framework - 1 Update

New Lightweight C++ Logging Framework

Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk>: Oct 31 11:10PM New lightweight C++ logging framework:   #include <thread> #include <iostream> #include <neolib/app/ostream_logger.hpp>   namespace neolog = neolib::logger;   enum class category : int32_t { Red, Green, Blue, Black, White };   const neolog::category Red{ category::Red }; const neolog::category Green{ category::Green }; const neolog::category Blue{ category::Blue }; const neolog::category Black{ category::Black }; const neolog::category White{ category::White };   void output_log_messages(neolog::i_logger& logger0, neolog::i_logger& logger1) { for (int i = 0; i < 1000; ++i) { logger0 << Red << neolog::severity::Info << "[tid: " << std::this_thread::get_id() << "] [" << std::hex << "0x" << i << "] (Red) Info message 1" << neolog::endl; logger0 << Green << neolog::severity::Debug << "[tid: " << std::this_thread::get_id() << "] [" << std::hex << "0x" << i << "] (Green) Debug message 1" << neolog::endl; logger0 << Blue << neolog::severity::Debug << "[tid: " << std::this_thread::get_id() << "] [" << std::hex << "0x" << i << "] (Blue) Debug message 2" << neolog::endl; logger0 << Black << neolog::severity::Info << "[tid: " << std::this_thread::get_id() << "] [" << std::hex << "0x" << i << "] (Black) Info message 2" << neolog::endl; logger0 << White << neolog::severity::Info << "[tid: " << std::this_thread::get_id() << "] [" << std::hex << "0x" << i << "] (White) Info message 3" << neolog::endl;   logger1 << neolog::severity::Info << "**** LOGGER1 MESSAGE ****" << neolog::endl; } }   int main() { try { neolog::ostream_logger<0> logger0{ std::cout }; logger0.set_filter_severity(neolog::severity::Debug); logger0.create_logging_thread();   neolog::ostream_logger<1> logger1{ std::cerr }; logger1.create_logging_thread();   /* std::ofstream ofs{ "c:\\tmp\\test.log" }; neolog::ostream_logger<2> logger2{ ofs }; logger2.create_logging_thread(); logger0.copy_to(logger2); */   logger0.register_category(category::Red); logger0.register_category(category::Green); logger0.register_category(category::Blue); logger0.register_category(category::Black); logger0.register_category(category::White);   logger0.disable_category(category::White); // logger2.enable_category(category::White);   std::thread thread1{ [&]() { output_log_messages(logger0, logger1); } };   std::thread thread2{ [&]() { output_log_messages(logger0, logger1); } };   std::thread thread3{ [&]() { output_log_messages(logger0, logger1); } };   output_log_messages(logger0, logger1);   thread1.join(); thread2.join(); thread3.join(); } catch (std::exception& e) { std::cerr << e.what() << std::endl; } catch (...) { std::cerr << "unknown exception" << std::endl; } }   https://github.com/i42output/neolib/blob/master/include/neolib/app/i_logger.hpp   /Flibble   -- ¬

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