process_unix.go RawHistoryFolder

1//go:build !windows
2
3package bot
4
5import (
6	"errors"
7	"os"
8	"syscall"
9	"time"
10)
11
12func processAlive(pid int) (bool, error) {
13	proc, err := os.FindProcess(pid)
14	if err != nil {
15		return false, err
16	}
17	if err := proc.Signal(syscall.Signal(0)); err != nil {
18		if errors.Is(err, os.ErrProcessDone) || errors.Is(err, syscall.ESRCH) {
19			return false, nil
20		}
21		// Other errors (EPERM) mean the process exists but we can't inspect it.
22		return true, nil
23	}
24	return true, nil
25}
26
27func stopProcess(pid int, graceful time.Duration) error {
28	proc, err := os.FindProcess(pid)
29	if err != nil {
30		return err
31	}
32	_ = proc.Signal(syscall.SIGTERM)
33
34	deadline := time.Now().Add(graceful)
35	for time.Now().Before(deadline) {
36		alive, err := processAlive(pid)
37		if err != nil || !alive {
38			return nil
39		}
40		time.Sleep(100 * time.Millisecond)
41	}
42	_ = proc.Kill()
43	return nil
44}