status-go/vendor/github.com/ethereum/go-ethereum/dashboard/cpu.go

36 lines
1.2 KiB
Go

// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// +build !windows
package dashboard
import (
"syscall"
"github.com/ethereum/go-ethereum/log"
)
// getProcessCPUTime retrieves the process' CPU time since program startup.
func getProcessCPUTime() float64 {
var usage syscall.Rusage
if err := syscall.Getrusage(syscall.RUSAGE_SELF, &usage); err != nil {
log.Warn("Failed to retrieve CPU time", "err", err)
return 0
}
return float64(usage.Utime.Sec+usage.Stime.Sec) + float64(usage.Utime.Usec+usage.Stime.Usec)/1000000
}