| 1 | //go:build windows |
| 2 | |
| 3 | package boot |
| 4 | |
| 5 | import ( |
| 6 | "errors" |
| 7 | |
| 8 | "golang.org/x/sys/windows" |
| 9 | ) |
| 10 | |
| 11 | // pidAlive reports whether pid still exists. ERROR_ACCESS_DENIED means the |
| 12 | // process exists but we lack query rights, so it counts as alive; every |
| 13 | // other OpenProcess failure (including ERROR_INVALID_PARAMETER for a dead |
| 14 | // pid) means gone. |
| 15 | func pidAlive(pid int) bool { |
| 16 | if pid <= 0 { |
| 17 | return false |
| 18 | } |
| 19 | h, err := windows.OpenProcess(windows.PROCESS_QUERY_LIMITED_INFORMATION, false, uint32(pid)) |
| 20 | if err != nil { |
| 21 | return errors.Is(err, windows.ERROR_ACCESS_DENIED) |
| 22 | } |
| 23 | defer func() { _ = windows.CloseHandle(h) }() |
| 24 | var code uint32 |
| 25 | if err := windows.GetExitCodeProcess(h, &code); err != nil { |
| 26 | return true |
| 27 | } |
| 28 | const stillActive = 259 |
| 29 | return code == stillActive |
| 30 | } |
| 31 |