metrics_hub.h

lib\include\srslte\common 2456 4/10/2019 38


/******************************************************************************* File:        metrics_hub.h* Description: Centralizes metrics interfaces to allow different metrics clients*              to get metrics *****************************************************************************/#ifndef SRSLTE_METRICS_HUB_H
#define SRSLTE_METRICS_HUB_H#include <vector>
#include "srslte/common/threads.h"
#include "srslte/srslte.h"namespace srslte {template<typename metrics_t>
class metrics_interface
{
public:virtual bool get_metrics(metrics_t &m) = 0;
}; template<typename metrics_t>
class metrics_listener //指标侦听器
{
public: virtual void set_metrics(metrics_t &m, const uint32_t period_usec) = 0;virtual void stop() = 0;
};template<typename metrics_t>
//metrics hub: 指标中心
class metrics_hub : public periodic_thread //periodic 周期
{//hub: 枢纽;    metrics:指标
/*
度量  measurement, metric, metrics, measuring
量度  measure, measuring, metrics, metric
指标  index, indicators, target, parameters, metrics, criteria, markers
*/
public:metrics_hub() //hub 枢纽:m(NULL){for (int i = 0; i < 3; ++i) {sleep_period_start[i] = (struct timeval){};}}bool init(metrics_interface<metrics_t> *m_, float report_period_secs_=1.0) {m = m_;// Start with user-default prioritystart_periodic(report_period_secs_*1e6, -2);return true;}void stop() {stop_thread();// stop all listenersfor (uint32_t i=0;i<listeners.size();i++) {listeners[i]->stop();}thread_cancel();wait_thread_finish();}void add_listener(metrics_listener<metrics_t> *listener) {listeners.push_back(listener);}private:void run_period(){// get current time and check how long we sleptgettimeofday(&sleep_period_start[2], NULL);get_time_interval(sleep_period_start);uint32_t period = sleep_period_start[0].tv_sec*1e6 + sleep_period_start[0].tv_usec;if (m) {metrics_t metric;m->get_metrics(metric);for (uint32_t i=0;i<listeners.size();i++) {listeners[i]->set_metrics(metric, period);}}// store start of sleep periodgettimeofday(&sleep_period_start[1], NULL);}metrics_interface<metrics_t> *m;std::vector<metrics_listener<metrics_t>*> listeners;struct timeval sleep_period_start[3];
};} // namespace srslte#endif // SRSLTE_METRICS_HUB_H

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srsLTE源码学习：度量中心：metrics_hub.h

metrics_hub.h

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