53 lines
1.2 KiB
Go
Executable File
53 lines
1.2 KiB
Go
Executable File
// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
|
|
// All rights reserved. Use of this source code is governed by an MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
//+build windows
|
|
|
|
package main
|
|
|
|
import (
|
|
"syscall"
|
|
"time"
|
|
)
|
|
|
|
func init() {
|
|
go trackCPUUsage()
|
|
}
|
|
|
|
func trackCPUUsage() {
|
|
handle, err := syscall.GetCurrentProcess()
|
|
if err != nil {
|
|
l.Warnln("Cannot track CPU usage:", err)
|
|
return
|
|
}
|
|
|
|
var ctime, etime, ktime, utime syscall.Filetime
|
|
err = syscall.GetProcessTimes(handle, &ctime, &etime, &ktime, &utime)
|
|
if err != nil {
|
|
l.Warnln("Cannot track CPU usage:", err)
|
|
return
|
|
}
|
|
|
|
prevTime := ctime.Nanoseconds()
|
|
prevUsage := ktime.Nanoseconds() + utime.Nanoseconds() // Always overflows
|
|
|
|
for _ = range time.NewTicker(time.Second).C {
|
|
err := syscall.GetProcessTimes(handle, &ctime, &etime, &ktime, &utime)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
|
|
curTime := time.Now().UnixNano()
|
|
timeDiff := curTime - prevTime
|
|
curUsage := ktime.Nanoseconds() + utime.Nanoseconds()
|
|
usageDiff := curUsage - prevUsage
|
|
cpuUsageLock.Lock()
|
|
copy(cpuUsagePercent[1:], cpuUsagePercent[0:])
|
|
cpuUsagePercent[0] = 100 * float64(usageDiff) / float64(timeDiff)
|
|
cpuUsageLock.Unlock()
|
|
prevTime = curTime
|
|
prevUsage = curUsage
|
|
}
|
|
}
|