60 lines
2.3 KiB
C++
60 lines
2.3 KiB
C++
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#include "quill/Backend.h"
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#include "quill/Frontend.h"
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#include "quill/LogMacros.h"
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#include "quill/Logger.h"
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#include "quill/sinks/ConsoleSink.h"
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#include <chrono>
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#include <iostream>
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#include <thread>
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#include <utility>
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/**
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* This example demonstrates how to manually wake up the backend thread when configuring
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* it with a longer sleep duration.
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*
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* Note: It's generally advised not to set the sleep duration higher than 1 second.
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* However, it's still possible to do so.
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* The only practical use case for this is when you want to prevent the backend thread
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* from waking up periodically to conserve CPU cycles.
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*/
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int main()
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{
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// Start the backend thread
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quill::BackendOptions backend_options;
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backend_options.sleep_duration = std::chrono::hours{24};
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quill::Backend::start(backend_options);
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// To demonstrate the example we have to wait for the backend thread to start and then
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// go into sleep as there will be nothing to log, so we wait here a bit
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std::this_thread::sleep_for(std::chrono::seconds{1});
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// Frontend
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auto console_sink = quill::Frontend::create_or_get_sink<quill::ConsoleSink>("sink_id_1");
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quill::Logger* logger = quill::Frontend::create_or_get_logger("root", std::move(console_sink));
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LOG_INFO(logger, "This is a log info example {}", 5);
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LOG_WARNING(logger, "This is a log warning example {}", 6);
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LOG_ERROR(logger, "This is a log error example {}", 7);
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// sleep for 5 seconds, the backend thread will also be sleeping so no logs are displayed
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std::cout << "waiting for the backend thread..." << std::endl;
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std::this_thread::sleep_for(std::chrono::seconds{5});
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std::cout << "notifying for the backend thread..." << std::endl;
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quill::Backend::notify();
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std::this_thread::sleep_for(std::chrono::seconds{1}); // let backend sleep again
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LOG_INFO(logger, "This is a log info example {}", 15);
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LOG_WARNING(logger, "This is a log warning example {}", 16);
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LOG_ERROR(logger, "This is a log error example {}", 17);
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std::cout << "waiting for the backend thread..." << std::endl;
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std::this_thread::sleep_for(std::chrono::seconds{5});
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std::cout << "notifying for the backend thread..." << std::endl;
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quill::Backend::notify();
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std::this_thread::sleep_for(std::chrono::seconds{1}); // let backend sleep again
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LOG_INFO(logger, "Done, backend thread will always wake up and log on destruction");
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}
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