moby/pkg/pidfile/pidfile_windows.go

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package pidfile
import "syscall"
const (
processQueryLimitedInformation = 0x1000
stillActive = 259
)
func processExists(pid int) bool {
h, err := syscall.OpenProcess(processQueryLimitedInformation, false, uint32(pid))
if err != nil {
return false
}
var c uint32
err = syscall.GetExitCodeProcess(h, &c)
syscall.Close(h)
if err != nil {
return c == stillActive
}
return true
}