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