Add CPU usage tracker for Windows (fixes #729)

This commit is contained in:
Audrius Butkevicius 2014-09-23 22:39:11 +01:00 committed by Audrius Butkevicius
parent e596a45e9f
commit 83ef2fa84c

52
cmd/syncthing/gui_windows.go Executable file
View File

@ -0,0 +1,52 @@
// 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
}
}