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// +build darwin
package cpu
import (
"context"
"os/exec"
"strconv"
"strings"
)
// sys/resource.h
const (
CPUser = 0
CPNice = 1
CPSys = 2
CPIntr = 3
CPIdle = 4
CPUStates = 5
)
// default value. from time.h
var ClocksPerSec = float64(128)
func Times(percpu bool) ([]TimesStat, error) {
return TimesWithContext(context.Background(), percpu)
}
func TimesWithContext(ctx context.Context, percpu bool) ([]TimesStat, error) {
if percpu {
return perCPUTimes()
}
return allCPUTimes()
}
// Returns only one CPUInfoStat on FreeBSD
func Info() ([]InfoStat, error) {
return InfoWithContext(context.Background())
}
func InfoWithContext(ctx context.Context) ([]InfoStat, error) {
var ret []InfoStat
sysctl, err := exec.LookPath("/usr/sbin/sysctl")
if err != nil {
return ret, err
}
out, err := invoke.CommandWithContext(ctx, sysctl, "machdep.cpu")
if err != nil {
return ret, err
}
c := InfoStat{}
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]
}
}
// Use the rated frequency of the CPU. This is a static value and does not
// account for low power or Turbo Boost modes.
out, err = invoke.CommandWithContext(ctx, sysctl, "hw.cpufrequency")
if err != nil {
return ret, err
}
values := strings.Fields(string(out))
hz, err := strconv.ParseFloat(values[1], 64)
if err != nil {
return ret, err
}
c.Mhz = hz / 1000000.0
return append(ret, c), nil
}
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