github.com/linapex/ethereum-go-chinese@v0.0.0-20190316121929-f8b7a73c3fa1/dashboard/cpu.go (about)

     1  
     2  //<developer>
     3  //    <name>linapex 曹一峰</name>
     4  //    <email>linapex@163.com</email>
     5  //    <wx>superexc</wx>
     6  //    <qqgroup>128148617</qqgroup>
     7  //    <url>https://jsq.ink</url>
     8  //    <role>pku engineer</role>
     9  //    <date>2019-03-16 19:16:37</date>
    10  //</624450087212290048>
    11  
    12  
    13  //+建设！窗户
    14  
    15  package dashboard
    16  
    17  import (
    18  	"syscall"
    19  
    20  	"github.com/ethereum/go-ethereum/log"
    21  )
    22  
    23  //GetProcessCPutime检索自程序启动后的进程的CPU时间。
    24  func getProcessCPUTime() float64 {
    25  	var usage syscall.Rusage
    26  	if err := syscall.Getrusage(syscall.RUSAGE_SELF, &usage); err != nil {
    27  		log.Warn("Failed to retrieve CPU time", "err", err)
    28  		return 0
    29  	}
    30  	return float64(usage.Utime.Sec+usage.Stime.Sec) + float64(usage.Utime.Usec+usage.Stime.Usec)/1000000
    31  }
    32