51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
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// Distributed under the MIT License (http://opensource.org/licenses/MIT)
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#pragma once
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#include "spdlog/common.h"
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#include "spdlog/details/log_msg_buffer.h"
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#include "spdlog/details/circular_q.h"
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#include "spdlog/sinks/sink.h"
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#include <mutex>
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// Store log messages in circular buffer.
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// Useful for storing debug data in case of error/warning happens.
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namespace spdlog {
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namespace details {
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class backtracer
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{
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std::mutex mutex_;
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size_t n_messages_;
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circular_q<log_msg_buffer> messages_;
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public:
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explicit backtracer(size_t n_messages) : n_messages_{n_messages}, messages_{n_messages}
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{}
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size_t n_messages() const
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{
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return n_messages_;
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}
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void add(const log_msg &msg)
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{
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std::lock_guard<std::mutex> lock{mutex_};
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messages_.push_back(log_msg_buffer{msg});
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}
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// pop all items in the q and apply the given fun on each of them.
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void foreach_pop(std::function<void(const details::log_msg &)> fun)
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{
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std::lock_guard<std::mutex> lock{mutex_};
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while (!messages_.empty())
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{
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log_msg_buffer popped;
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messages_.pop_front(popped);
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fun(popped);
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}
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}
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};
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} // namespace details
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} // namespace spdlog
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