| package system |
| |
| import ( |
| "io/ioutil" |
| "path/filepath" |
| "strconv" |
| "strings" |
| ) |
| |
| // look in /proc to find the process start time so that we can verify |
| // that this pid has started after ourself |
| func GetProcessStartTime(pid int) (string, error) { |
| data, err := ioutil.ReadFile(filepath.Join("/proc", strconv.Itoa(pid), "stat")) |
| if err != nil { |
| return "", err |
| } |
| parts := strings.Split(string(data), " ") |
| // the starttime is located at pos 22 |
| // from the man page |
| // |
| // starttime %llu (was %lu before Linux 2.6) |
| // (22) The time the process started after system boot. In kernels before Linux 2.6, this |
| // value was expressed in jiffies. Since Linux 2.6, the value is expressed in clock ticks |
| // (divide by sysconf(_SC_CLK_TCK)). |
| return parts[22-1], nil // starts at 1 |
| } |