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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package sysinfo
import (
"syscall"
"time"
)
func filetimeToDuration(ft *syscall.Filetime) time.Duration {
ns := ft.Nanoseconds()
return time.Duration(ns)
}
// GetUsage gathers process times.
func GetUsage() (Usage, error) {
var creationTime syscall.Filetime
var exitTime syscall.Filetime
var kernelTime syscall.Filetime
var userTime syscall.Filetime
handle, err := syscall.GetCurrentProcess()
if err != nil {
return Usage{}, err
}
err = syscall.GetProcessTimes(handle, &creationTime, &exitTime, &kernelTime, &userTime)
if err != nil {
return Usage{}, err
}
return Usage{
System: filetimeToDuration(&kernelTime),
User: filetimeToDuration(&userTime),
}, nil
}
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