59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
//
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// Copyright(c) 2015 Gabi Melman.
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// Distributed under the MIT License (http://opensource.org/licenses/MIT)
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//
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#pragma once
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// Very fast asynchronous logger (millions of logs per second on an average desktop)
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// Uses pre allocated lockfree queue for maximum throughput even under large number of threads.
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// Creates a single back thread to pop messages from the queue and log them.
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//
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// Upon each log write the logger:
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// 1. Checks if its log level is enough to log the message
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// 2. Push a new copy of the message to a queue (or block the caller until space is available in the queue)
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// 3. will throw spdlog_ex upon log exceptions
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// Upon destruction, logs all remaining messages in the queue before destructing..
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#include "spdlog/common.h"
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#include "spdlog/logger.h"
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#include <chrono>
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#include <memory>
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#include <string>
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namespace spdlog {
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namespace details {
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class thread_pool;
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}
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class async_logger SPDLOG_FINAL : public std::enable_shared_from_this<async_logger>, public logger
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{
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friend class details::thread_pool;
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public:
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template<class It>
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async_logger(const std::string &logger_name, const It &begin, const It &end, std::weak_ptr<details::thread_pool> tp,
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async_overflow_policy overflow_policy = async_overflow_policy::block_retry);
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async_logger(const std::string &logger_name, sinks_init_list sinks, std::weak_ptr<details::thread_pool> tp,
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async_overflow_policy overflow_policy = async_overflow_policy::block_retry);
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async_logger(const std::string &logger_name, sink_ptr single_sink, std::weak_ptr<details::thread_pool> tp,
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async_overflow_policy overflow_policy = async_overflow_policy::block_retry);
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protected:
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void _sink_it(details::log_msg &msg) override;
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void _flush() override;
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void _backend_log(details::log_msg &incoming_log_msg);
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void _backend_flush();
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private:
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std::weak_ptr<details::thread_pool> _thread_pool;
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async_overflow_policy _overflow_policy;
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};
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} // namespace spdlog
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#include "details/async_logger_impl.h"
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