// Copyright(c) 2015-present, Gabi Melman & spdlog contributors. // Distributed under the MIT License (http://opensource.org/licenses/MIT) #pragma once #include <spdlog/details/log_msg_buffer.h> #include <spdlog/details/circular_q.h> #include <atomic> #include <mutex> #include <functional> // Store log messages in circular buffer. // Useful for storing debug data in case of error/warning happens. namespace spdlog { namespace details { class SPDLOG_API backtracer { mutable std::mutex mutex_; std::atomic<bool> enabled_{false}; circular_q<log_msg_buffer> messages_; public: backtracer() = default; backtracer(const backtracer &other); backtracer(backtracer &&other) SPDLOG_NOEXCEPT; backtracer &operator=(backtracer other); void enable(size_t size); void disable(); bool enabled() const; void push_back(const log_msg &msg); // pop all items in the q and apply the given fun on each of them. void foreach_pop(std::function<void(const details::log_msg &)> fun); }; } // namespace details } // namespace spdlog #ifdef SPDLOG_HEADER_ONLY #include "backtracer-inl.h" #endif