74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
// +build linux
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package gopsutil
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import (
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"errors"
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"strconv"
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"strings"
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)
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func CPUTimes(percpu bool) ([]CPUTimesStat, error) {
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filename := "/proc/stat"
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lines, _ := readLines(filename)
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ret := make([]CPUTimesStat, 0, len(lines))
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for _, line := range lines {
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ct, err := parseStatLine(line)
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if err != nil {
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continue
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}
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ret = append(ret, *ct)
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}
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return ret, nil
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}
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func parseStatLine(line string) (*CPUTimesStat, error) {
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fields := strings.Fields(line)
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if strings.HasPrefix(fields[0], "cpu") == false {
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// return CPUTimesStat{}, e
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return nil, errors.New("not contain cpu")
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}
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cpu := fields[0]
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if cpu == "cpu" {
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cpu = "cpu-total"
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}
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user, _ := strconv.ParseFloat(fields[1], 32)
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nice, _ := strconv.ParseFloat(fields[2], 32)
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system, _ := strconv.ParseFloat(fields[3], 32)
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idle, _ := strconv.ParseFloat(fields[4], 32)
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iowait, _ := strconv.ParseFloat(fields[5], 32)
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irq, _ := strconv.ParseFloat(fields[6], 32)
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softirq, _ := strconv.ParseFloat(fields[7], 32)
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stolen, _ := strconv.ParseFloat(fields[8], 32)
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ct := &CPUTimesStat{
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CPU: cpu,
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User: float32(user),
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Nice: float32(nice),
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System: float32(system),
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Idle: float32(idle),
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Iowait: float32(iowait),
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Irq: float32(irq),
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Softirq: float32(softirq),
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Stolen: float32(stolen),
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}
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if len(fields) > 9 { // Linux >= 2.6.11
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steal, _ := strconv.ParseFloat(fields[9], 32)
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ct.Steal = float32(steal)
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}
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if len(fields) > 10 { // Linux >= 2.6.24
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guest, _ := strconv.ParseFloat(fields[10], 32)
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ct.Guest = float32(guest)
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}
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if len(fields) > 11 { // Linux >= 3.2.0
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guestNice, _ := strconv.ParseFloat(fields[11], 32)
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ct.GuestNice = float32(guestNice)
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}
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return ct, nil
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}
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