open-consul/vendor/github.com/shirou/gopsutil/cpu/cpu_openbsd.go

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// +build openbsd
package cpu
import (
"bytes"
"context"
"encoding/binary"
"fmt"
"os/exec"
"strconv"
"strings"
"github.com/shirou/gopsutil/internal/common"
"golang.org/x/sys/unix"
)
// sys/sched.h
const (
CPUser = 0
CPNice = 1
CPSys = 2
CPIntr = 3
CPIdle = 4
CPUStates = 5
)
// sys/sysctl.h
const (
CTLKern = 1 // "high kernel": proc, limits
KernCptime = 40 // KERN_CPTIME
KernCptime2 = 71 // KERN_CPTIME2
)
var ClocksPerSec = float64(128)
func init() {
getconf, err := exec.LookPath("/usr/bin/getconf")
if err != nil {
return
}
out, err := invoke.Command(getconf, "CLK_TCK")
// ignore errors
if err == nil {
i, err := strconv.ParseFloat(strings.TrimSpace(string(out)), 64)
if err == nil {
ClocksPerSec = float64(i)
}
}
}
func Times(percpu bool) ([]TimesStat, error) {
return TimesWithContext(context.Background(), percpu)
}
func TimesWithContext(ctx context.Context, percpu bool) ([]TimesStat, error) {
var ret []TimesStat
var ncpu int
if percpu {
ncpu, _ = Counts(true)
} else {
ncpu = 1
}
for i := 0; i < ncpu; i++ {
var cpuTimes [CPUStates]int64
var mib []int32
if percpu {
mib = []int32{CTLKern, KernCptime}
} else {
mib = []int32{CTLKern, KernCptime2, int32(i)}
}
buf, _, err := common.CallSyscall(mib)
if err != nil {
return ret, err
}
br := bytes.NewReader(buf)
err = binary.Read(br, binary.LittleEndian, &cpuTimes)
if err != nil {
return ret, err
}
c := TimesStat{
User: float64(cpuTimes[CPUser]) / ClocksPerSec,
Nice: float64(cpuTimes[CPNice]) / ClocksPerSec,
System: float64(cpuTimes[CPSys]) / ClocksPerSec,
Idle: float64(cpuTimes[CPIdle]) / ClocksPerSec,
Irq: float64(cpuTimes[CPIntr]) / 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 (minimal) CPUInfoStat on OpenBSD
func Info() ([]InfoStat, error) {
return InfoWithContext(context.Background())
}
func InfoWithContext(ctx context.Context) ([]InfoStat, error) {
var ret []InfoStat
c := InfoStat{}
v, err := unix.Sysctl("hw.model")
if err != nil {
return nil, err
}
c.ModelName = v
return append(ret, c), nil
}