83 lines
3.1 KiB
C++
83 lines
3.1 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 <functional>
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#include <string>
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#include <memory>
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namespace spdlog
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{
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namespace details
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{
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class async_log_helper;
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}
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class async_logger SPDLOG_FINAL :public logger
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{
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public:
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template<class It>
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async_logger(const std::string& name,
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const It& begin,
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const It& end,
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size_t queue_size,
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const async_overflow_policy overflow_policy = async_overflow_policy::block_retry,
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const std::function<void()>& worker_warmup_cb = nullptr,
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const std::chrono::milliseconds& flush_interval_ms = std::chrono::milliseconds::zero(),
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const std::function<void()>& worker_teardown_cb = nullptr);
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async_logger(const std::string& logger_name,
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sinks_init_list sinks,
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size_t queue_size,
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const async_overflow_policy overflow_policy = async_overflow_policy::block_retry,
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const std::function<void()>& worker_warmup_cb = nullptr,
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const std::chrono::milliseconds& flush_interval_ms = std::chrono::milliseconds::zero(),
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const std::function<void()>& worker_teardown_cb = nullptr);
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async_logger(const std::string& logger_name,
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sink_ptr single_sink,
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size_t queue_size,
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const async_overflow_policy overflow_policy = async_overflow_policy::block_retry,
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const std::function<void()>& worker_warmup_cb = nullptr,
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const std::chrono::milliseconds& flush_interval_ms = std::chrono::milliseconds::zero(),
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const std::function<void()>& worker_teardown_cb = nullptr);
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//Wait for the queue to be empty, and flush synchronously
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//Warning: this can potentially last forever as we wait it to complete
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void flush() override;
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// Error handler
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virtual void set_error_handler(log_err_handler) override;
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virtual log_err_handler error_handler() override;
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protected:
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void _sink_it(details::log_msg& msg) override;
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void _set_formatter(spdlog::formatter_ptr msg_formatter) override;
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void _set_pattern(const std::string& pattern, pattern_time_type pattern_time) override;
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private:
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std::unique_ptr<details::async_log_helper> _async_log_helper;
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};
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}
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#include "spdlog/details/async_logger_impl.h"
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