spdlog/include/spdlog/details/backtracer.h

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// 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"
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#include <atomic>
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#include <mutex>
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#include <functional>
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// Store log messages in circular buffer.
// Useful for storing debug data in case of error/warning happens.
namespace spdlog {
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namespace details {
class backtracer
{
mutable std::mutex mutex_;
std::atomic<bool> enabled_{false};
circular_q<log_msg_buffer> messages_;
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public:
backtracer() = default;
backtracer(const backtracer &other);
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backtracer(backtracer &&other) SPDLOG_NOEXCEPT;
backtracer &operator=(backtracer other);
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void enable(size_t size);
void disable();
bool enabled() const;
explicit operator bool() const;
void push_back(const log_msg &msg);
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// 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);
};
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} // namespace details
} // namespace spdlog
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#ifdef SPDLOG_HEADER_ONLY
#include "backtracer-inl.h"
#endif