1package process
 2
 3import (
 4	"os"
 5	"syscall"
 6)
 7
 8// IsRunning tell is a process is running
 9func IsRunning(pid int) bool {
10	// never return no error in a unix system
11	process, err := os.FindProcess(pid)
12
13	if err != nil {
14		return false
15	}
16
17	// Signal 0 doesn't do anything but allow testing the process
18	err = process.Signal(syscall.Signal(0))
19
20	// Todo: distinguish "you don't have access" and "process doesn't exist"
21
22	return err == nil
23}