telegraf/plugins/system/ps/cpu/cpu_darwin.go

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2015-04-04 00:22:31 +00:00
// +build darwin
package cpu
import (
"fmt"
"os/exec"
"strconv"
"strings"
common "github.com/shirou/gopsutil/common"
)
// sys/resource.h
const (
CPUser = 0
CPNice = 1
CPSys = 2
CPIntr = 3
CPIdle = 4
CPUStates = 5
)
// time.h
const (
ClocksPerSec = 128
)
func CPUTimes(percpu bool) ([]CPUTimesStat, error) {
var ret []CPUTimesStat
var sysctlCall string
var ncpu int
if percpu {
sysctlCall = "kern.cp_times"
ncpu, _ = CPUCounts(true)
} else {
sysctlCall = "kern.cp_time"
ncpu = 1
}
cpuTimes, err := common.DoSysctrl(sysctlCall)
if err != nil {
return ret, err
}
for i := 0; i < ncpu; i++ {
offset := CPUStates * i
user, err := strconv.ParseFloat(cpuTimes[CPUser+offset], 64)
if err != nil {
return ret, err
}
nice, err := strconv.ParseFloat(cpuTimes[CPNice+offset], 64)
if err != nil {
return ret, err
}
sys, err := strconv.ParseFloat(cpuTimes[CPSys+offset], 64)
if err != nil {
return ret, err
}
idle, err := strconv.ParseFloat(cpuTimes[CPIdle+offset], 64)
if err != nil {
return ret, err
}
intr, err := strconv.ParseFloat(cpuTimes[CPIntr+offset], 64)
if err != nil {
return ret, err
}
c := CPUTimesStat{
User: float64(user / ClocksPerSec),
Nice: float64(nice / ClocksPerSec),
System: float64(sys / ClocksPerSec),
Idle: float64(idle / ClocksPerSec),
Irq: float64(intr / ClocksPerSec),
}
if !percpu {
c.CPU = "cpu-total"
} else {
c.CPU = fmt.Sprintf("cpu%d", i)
}
ret = append(ret, c)
}
return ret, nil
}
// Returns only one CPUInfoStat on FreeBSD
func CPUInfo() ([]CPUInfoStat, error) {
var ret []CPUInfoStat
out, err := exec.Command("/usr/sbin/sysctl", "machdep.cpu").Output()
if err != nil {
return ret, err
}
c := CPUInfoStat{}
for _, line := range strings.Split(string(out), "\n") {
values := strings.Fields(line)
if len(values) < 1 {
continue
}
t, err := strconv.ParseInt(values[1], 10, 64)
// err is not checked here because some value is string.
if strings.HasPrefix(line, "machdep.cpu.brand_string") {
c.ModelName = strings.Join(values[1:], " ")
} else if strings.HasPrefix(line, "machdep.cpu.family") {
c.Family = values[1]
} else if strings.HasPrefix(line, "machdep.cpu.model") {
c.Model = values[1]
} else if strings.HasPrefix(line, "machdep.cpu.stepping") {
if err != nil {
return ret, err
}
c.Stepping = int32(t)
} else if strings.HasPrefix(line, "machdep.cpu.features") {
for _, v := range values[1:] {
c.Flags = append(c.Flags, strings.ToLower(v))
}
} else if strings.HasPrefix(line, "machdep.cpu.leaf7_features") {
for _, v := range values[1:] {
c.Flags = append(c.Flags, strings.ToLower(v))
}
} else if strings.HasPrefix(line, "machdep.cpu.extfeatures") {
for _, v := range values[1:] {
c.Flags = append(c.Flags, strings.ToLower(v))
}
} else if strings.HasPrefix(line, "machdep.cpu.core_count") {
if err != nil {
return ret, err
}
c.Cores = int32(t)
} else if strings.HasPrefix(line, "machdep.cpu.cache.size") {
if err != nil {
return ret, err
}
c.CacheSize = int32(t)
} else if strings.HasPrefix(line, "machdep.cpu.vendor") {
c.VendorID = values[1]
}
// TODO:
// c.Mhz = mustParseFloat64(values[1])
}
return append(ret, c), nil
}