| // |
| // Copyright(c) 2015 Gabi Melman. |
| // Distributed under the MIT License (http://opensource.org/licenses/MIT) |
| // |
| |
| #pragma once |
| |
| // Very fast asynchronous logger (millions of logs per second on an average desktop) |
| // Uses pre allocated lockfree queue for maximum throughput even under large number of threads. |
| // Creates a single back thread to pop messages from the queue and log them. |
| // |
| // Upon each log write the logger: |
| // 1. Checks if its log level is enough to log the message |
| // 2. Push a new copy of the message to a queue (or block the caller until space is available in the queue) |
| // 3. will throw spdlog_ex upon log exceptions |
| // Upon destruction, logs all remaining messages in the queue before destructing.. |
| |
| #include <spdlog/common.h> |
| #include <spdlog/logger.h> |
| |
| #include <chrono> |
| #include <functional> |
| #include <string> |
| #include <memory> |
| |
| namespace spdlog |
| { |
| |
| namespace details |
| { |
| class async_log_helper; |
| } |
| |
| class async_logger :public logger |
| { |
| public: |
| template<class It> |
| async_logger(const std::string& name, |
| const It& begin, |
| const It& end, |
| size_t queue_size, |
| const async_overflow_policy overflow_policy = async_overflow_policy::block_retry, |
| const std::function<void()>& worker_warmup_cb = nullptr, |
| const std::chrono::milliseconds& flush_interval_ms = std::chrono::milliseconds::zero(), |
| const std::function<void()>& worker_teardown_cb = nullptr); |
| |
| async_logger(const std::string& logger_name, |
| sinks_init_list sinks, |
| size_t queue_size, |
| const async_overflow_policy overflow_policy = async_overflow_policy::block_retry, |
| const std::function<void()>& worker_warmup_cb = nullptr, |
| const std::chrono::milliseconds& flush_interval_ms = std::chrono::milliseconds::zero(), |
| const std::function<void()>& worker_teardown_cb = nullptr); |
| |
| async_logger(const std::string& logger_name, |
| sink_ptr single_sink, |
| size_t queue_size, |
| const async_overflow_policy overflow_policy = async_overflow_policy::block_retry, |
| const std::function<void()>& worker_warmup_cb = nullptr, |
| const std::chrono::milliseconds& flush_interval_ms = std::chrono::milliseconds::zero(), |
| const std::function<void()>& worker_teardown_cb = nullptr); |
| |
| //Wait for the queue to be empty, and flush synchronously |
| //Warning: this can potentialy last forever as we wait it to complete |
| void flush() override; |
| protected: |
| void _sink_it(details::log_msg& msg) override; |
| void _set_formatter(spdlog::formatter_ptr msg_formatter) override; |
| void _set_pattern(const std::string& pattern) override; |
| |
| private: |
| std::unique_ptr<details::async_log_helper> _async_log_helper; |
| }; |
| } |
| |
| |
| #include <spdlog/details/async_logger_impl.h> |