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102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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/******************************************************************************
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* File: metrics_hub.h
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* Description: Centralizes metrics interfaces to allow different metrics clients
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* to get metrics
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*****************************************************************************/
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#ifndef SRSLTE_METRICS_HUB_H
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#define SRSLTE_METRICS_HUB_H
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#include "srslte/common/threads.h"
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#include <chrono>
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#include <mutex>
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#include <thread>
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#include <vector>
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namespace srslte {
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template <typename metrics_t>
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class metrics_interface
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{
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public:
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virtual bool get_metrics(metrics_t* m) = 0;
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};
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template <typename metrics_t>
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class metrics_listener
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{
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public:
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virtual void set_metrics(const metrics_t& m, const uint32_t period_usec) = 0;
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virtual void stop() = 0;
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};
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template <typename metrics_t>
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class metrics_hub : public periodic_thread
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{
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public:
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metrics_hub() : sleep_start(std::chrono::steady_clock::now()), periodic_thread("METRICS_HUB") {}
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bool init(metrics_interface<metrics_t>* m_, float report_period_secs_ = 1.0)
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{
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m = m_;
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// Start with user-default priority
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start_periodic(report_period_secs_ * 1e6, -2);
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return true;
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}
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void stop()
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{
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stop_thread();
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// stop all listeners
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for (uint32_t i = 0; i < listeners.size(); i++) {
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listeners[i]->stop();
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}
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thread_cancel();
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wait_thread_finish();
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}
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void add_listener(metrics_listener<metrics_t>* listener)
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{
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std::unique_lock<std::mutex> lock(mutex);
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listeners.push_back(listener);
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}
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private:
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void run_period()
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{
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std::unique_lock<std::mutex> lock(mutex);
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// get current time and check how long we slept
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auto period_usec =
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std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::steady_clock::now() - sleep_start);
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if (m) {
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metrics_t metric;
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m->get_metrics(&metric);
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for (uint32_t i = 0; i < listeners.size(); i++) {
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listeners[i]->set_metrics(metric, period_usec.count());
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}
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}
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// store start of sleep period
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sleep_start = std::chrono::steady_clock::now();
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}
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metrics_interface<metrics_t>* m = nullptr;
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std::vector<metrics_listener<metrics_t>*> listeners;
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std::chrono::steady_clock::time_point sleep_start;
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std::mutex mutex;
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};
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} // namespace srslte
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#endif // SRSLTE_METRICS_HUB_H
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