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-rw-r--r--thirdparty/spdlog/sinks/ringbuffer_sink.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/thirdparty/spdlog/sinks/ringbuffer_sink.h b/thirdparty/spdlog/sinks/ringbuffer_sink.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/sinks/base_sink.h"
+#include "spdlog/details/circular_q.h"
+#include "spdlog/details/log_msg_buffer.h"
+#include "spdlog/details/null_mutex.h"
+
+#include <mutex>
+#include <string>
+#include <vector>
+
+namespace spdlog {
+namespace sinks {
+/*
+ * Ring buffer sink
+ */
+template<typename Mutex>
+class ringbuffer_sink final : public base_sink<Mutex>
+{
+public:
+ explicit ringbuffer_sink(size_t n_items)
+ : q_{n_items}
+ {}
+
+ std::vector<details::log_msg_buffer> last_raw(size_t lim = 0)
+ {
+ std::lock_guard<Mutex> lock(base_sink<Mutex>::mutex_);
+ auto items_available = q_.size();
+ auto n_items = lim > 0 ? (std::min)(lim, items_available) : items_available;
+ std::vector<details::log_msg_buffer> ret;
+ ret.reserve(n_items);
+ for (size_t i = (items_available - n_items); i < items_available; i++)
+ {
+ ret.push_back(q_.at(i));
+ }
+ return ret;
+ }
+
+ std::vector<std::string> last_formatted(size_t lim = 0)
+ {
+ std::lock_guard<Mutex> lock(base_sink<Mutex>::mutex_);
+ auto items_available = q_.size();
+ auto n_items = lim > 0 ? (std::min)(lim, items_available) : items_available;
+ std::vector<std::string> ret;
+ ret.reserve(n_items);
+ for (size_t i = (items_available - n_items); i < items_available; i++)
+ {
+ memory_buf_t formatted;
+ base_sink<Mutex>::formatter_->format(q_.at(i), formatted);
+ ret.push_back(fmt::to_string(formatted));
+ }
+ return ret;
+ }
+
+protected:
+ void sink_it_(const details::log_msg &msg) override
+ {
+ q_.push_back(details::log_msg_buffer{msg});
+ }
+ void flush_() override {}
+
+private:
+ details::circular_q<details::log_msg_buffer> q_;
+};
+
+using ringbuffer_sink_mt = ringbuffer_sink<std::mutex>;
+using ringbuffer_sink_st = ringbuffer_sink<details::null_mutex>;
+
+} // namespace sinks
+
+} // namespace spdlog