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71 lines
2.6 KiB
C
71 lines
2.6 KiB
C
4 years ago
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/**
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSLTE_SYS_METRICS_PROCESSOR_H
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#define SRSLTE_SYS_METRICS_PROCESSOR_H
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#include "srslte/system/sys_metrics.h"
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#include <chrono>
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#include <string>
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namespace srslte {
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/// Process the data from the proc_stats_info.
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class sys_metrics_processor
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{
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/// Contains the information of a process.
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struct proc_stats_info {
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proc_stats_info();
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/// Parsed every field in /proc/[pid]/stats file.
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int pid, ppid, pgrp, session, tty_nr, tpgid, exit_signal, processor, exit_code;
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unsigned flags, rt_priority, policy;
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unsigned long minflt, cminflt, majflt, cmajflt, utime, stime, vsize, rsslim, startcode, endcode, startstack,
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kstkesp, kstkeip, signal, blocked, sigignore, sigcatch, wchan, nswap, cnswap, guest_time, start_data, end_data,
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start_brk, arg_start, arg_end, env_start, env_end;
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int long cutime, cstime, priority, nice, num_threads, itrealvalue, rss, cguest_time;
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unsigned long long starttime, delaycct_blkio_ticks;
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char state;
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std::string comm;
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};
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public:
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/// Performs a new measure and returns the values.
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sys_metrics_t get_metrics();
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private:
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/// Returns the cpu usage in %. current_query is the most recent proc_stats_info, and delta_time_in_seconds is the
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/// elapsed time between the last measure and current in seconds.
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/// NOTE: Returns -1.0f on error.
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float cpu_usage(const proc_stats_info& current_query, float delta_time_in_seconds) const;
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/// Returns the memory usage in kB. First element is the real mem whereas the second is the virtual mem.
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void mem_usage(sys_metrics_t& metrics) const;
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private:
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proc_stats_info last_query;
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std::chrono::time_point<std::chrono::steady_clock> last_query_time = std::chrono::steady_clock::now();
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};
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} // namespace srslte
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#endif // SRSLTE_SYS_METRICS_PROCESSOR_H
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