vendor/github.com/hashicorp/go-plugin/process_windows.go

   1 package plugin
   2
   3 import (
   4         "syscall"
   5 )
   6
   7 const (
   8         // Weird name but matches the MSDN docs
   9         exit_STILL_ACTIVE = 259
  10
  11         processDesiredAccess = syscall.STANDARD_RIGHTS_READ |
  12                 syscall.PROCESS_QUERY_INFORMATION |
  13                 syscall.SYNCHRONIZE
  14 )
  15
  16 // _pidAlive tests whether a process is alive or not
  17 func _pidAlive(pid int) bool {
  18         h, err := syscall.OpenProcess(processDesiredAccess, false, uint32(pid))
  19         if err != nil {
  20                 return false
  21         }
  22
  23         var ec uint32
  24         if e := syscall.GetExitCodeProcess(h, &ec); e != nil {
  25                 return false
  26         }
  27
  28         return ec == exit_STILL_ACTIVE
  29 }