| 1 | //go:build !windows |
| 2 | |
| 3 | package boot |
| 4 | |
| 5 | import ( |
| 6 | "errors" |
| 7 | "syscall" |
| 8 | ) |
| 9 | |
| 10 | // pidAlive reports whether pid still exists (zombies count as alive: the |
| 11 | // process table entry only disappears once the host reaps it). |
| 12 | func pidAlive(pid int) bool { |
| 13 | if pid <= 0 { |
| 14 | return false |
| 15 | } |
| 16 | err := syscall.Kill(pid, 0) |
| 17 | return !errors.Is(err, syscall.ESRCH) |
| 18 | } |
| 19 |