| Serge Bazanski | cc25bdf | 2018-10-25 14:02:58 +0200 | [diff] [blame] | 1 | // +build linux |
| 2 | |
| 3 | package common |
| 4 | |
| 5 | import ( |
| 6 | "os" |
| 7 | "os/exec" |
| 8 | "strings" |
| 9 | ) |
| 10 | |
| 11 | func DoSysctrl(mib string) ([]string, error) { |
| 12 | sysctl, err := exec.LookPath("/sbin/sysctl") |
| 13 | if err != nil { |
| 14 | return []string{}, err |
| 15 | } |
| 16 | cmd := exec.Command(sysctl, "-n", mib) |
| 17 | cmd.Env = getSysctrlEnv(os.Environ()) |
| 18 | out, err := cmd.Output() |
| 19 | if err != nil { |
| 20 | return []string{}, err |
| 21 | } |
| 22 | v := strings.Replace(string(out), "{ ", "", 1) |
| 23 | v = strings.Replace(string(v), " }", "", 1) |
| 24 | values := strings.Fields(string(v)) |
| 25 | |
| 26 | return values, nil |
| 27 | } |
| 28 | |
| 29 | func NumProcs() (uint64, error) { |
| 30 | f, err := os.Open(HostProc()) |
| 31 | if err != nil { |
| 32 | return 0, err |
| 33 | } |
| 34 | defer f.Close() |
| 35 | |
| 36 | list, err := f.Readdirnames(-1) |
| 37 | if err != nil { |
| 38 | return 0, err |
| 39 | } |
| 40 | return uint64(len(list)), err |
| 41 | } |