github.com/kisexp/xdchain@v0.0.0-20211206025815-490d6b732aa7/metrics/cpu_enabled.go (about)

     1  // Copyright 2020 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // +build !ios
    18  
    19  package metrics
    20  
    21  import (
    22  	"github.com/kisexp/xdchain/log"
    23  	"github.com/shirou/gopsutil/cpu"
    24  )
    25  
    26  // ReadCPUStats retrieves the current CPU stats.
    27  func ReadCPUStats(stats *CPUStats) {
    28  	// passing false to request all cpu times
    29  	timeStats, err := cpu.Times(false)
    30  	if err != nil {
    31  		log.Error("Could not read cpu stats", "err", err)
    32  		return
    33  	}
    34  	if len(timeStats) == 0 {
    35  		log.Error("Empty cpu stats")
    36  		return
    37  	}
    38  	// requesting all cpu times will always return an array with only one time stats entry
    39  	timeStat := timeStats[0]
    40  	stats.GlobalTime = int64((timeStat.User + timeStat.Nice + timeStat.System) * cpu.ClocksPerSec)
    41  	stats.GlobalWait = int64((timeStat.Iowait) * cpu.ClocksPerSec)
    42  	stats.LocalTime = getProcessCPUTime()
    43  }