116 lines
2.7 KiB
Go
116 lines
2.7 KiB
Go
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// +build darwin
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package cpu
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import (
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"context"
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"os/exec"
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"strconv"
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"strings"
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)
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// sys/resource.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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// default value. from time.h
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var ClocksPerSec = float64(128)
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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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if percpu {
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return perCPUTimes()
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}
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return allCPUTimes()
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}
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// Returns only one CPUInfoStat on FreeBSD
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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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sysctl, err := exec.LookPath("/usr/sbin/sysctl")
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if err != nil {
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return ret, err
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}
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out, err := invoke.Command(sysctl, "machdep.cpu")
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if err != nil {
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return ret, err
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}
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c := InfoStat{}
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for _, line := range strings.Split(string(out), "\n") {
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values := strings.Fields(line)
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if len(values) < 1 {
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continue
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}
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t, err := strconv.ParseInt(values[1], 10, 64)
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// err is not checked here because some value is string.
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if strings.HasPrefix(line, "machdep.cpu.brand_string") {
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c.ModelName = strings.Join(values[1:], " ")
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} else if strings.HasPrefix(line, "machdep.cpu.family") {
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c.Family = values[1]
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} else if strings.HasPrefix(line, "machdep.cpu.model") {
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c.Model = values[1]
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} else if strings.HasPrefix(line, "machdep.cpu.stepping") {
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if err != nil {
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return ret, err
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}
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c.Stepping = int32(t)
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} else if strings.HasPrefix(line, "machdep.cpu.features") {
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for _, v := range values[1:] {
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c.Flags = append(c.Flags, strings.ToLower(v))
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}
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} else if strings.HasPrefix(line, "machdep.cpu.leaf7_features") {
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for _, v := range values[1:] {
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c.Flags = append(c.Flags, strings.ToLower(v))
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}
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} else if strings.HasPrefix(line, "machdep.cpu.extfeatures") {
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for _, v := range values[1:] {
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c.Flags = append(c.Flags, strings.ToLower(v))
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}
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} else if strings.HasPrefix(line, "machdep.cpu.core_count") {
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if err != nil {
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return ret, err
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}
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c.Cores = int32(t)
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} else if strings.HasPrefix(line, "machdep.cpu.cache.size") {
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if err != nil {
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return ret, err
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}
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c.CacheSize = int32(t)
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} else if strings.HasPrefix(line, "machdep.cpu.vendor") {
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c.VendorID = values[1]
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}
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}
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// Use the rated frequency of the CPU. This is a static value and does not
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// account for low power or Turbo Boost modes.
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out, err = invoke.Command(sysctl, "hw.cpufrequency")
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if err != nil {
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return ret, err
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}
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values := strings.Fields(string(out))
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hz, err := strconv.ParseFloat(values[1], 64)
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if err != nil {
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return ret, err
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}
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c.Mhz = hz / 1000000.0
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return append(ret, c), nil
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}
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