erigon-pulse/metrics/cpu_syscall.go
2021-07-29 17:23:23 +07:00

46 lines
1.6 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 metrics
import (
"syscall"
"github.com/ledgerwatch/log/v3"
"github.com/shirou/gopsutil/v3/process"
)
func getRUsage(p *process.Process) (inBlock, outBlocks, nvcsw, nivcsw int64) {
var ru syscall.Rusage
if err := syscall.Getrusage(syscall.RUSAGE_SELF, &ru); err != nil {
log.Warn("Failed to retrieve CPU time", "err", err)
return
}
return ru.Inblock, ru.Oublock, ru.Nvcsw, ru.Nivcsw
}
// getProcessCPUTime retrieves the process' CPU time since program startup.
func getProcessCPUTime() int64 {
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 int64(usage.Utime.Sec+usage.Stime.Sec)*100 + int64(usage.Utime.Usec+usage.Stime.Usec)/10000 //nolint:unconvert
}