Get post meta on delete_post hook

I need to clear some files created for each post when post deleted.
Links to files and other data are stored in post meta.

In callback function, registered with hook delete_post – post meta in db table wp_postmeta is allready deleted.
Tried to set different priority in add_action.

Is there a way to hook when post is being deleted and get post meta?

add_action('admin_init', 'my_admin_init');

function my_admin_init(){
  add_action('delete_post', 'my_delete_post_action', 10);
}

function my_delete_post_action($pid){
  $meta = get_post_meta($pid, 'my_post_meta', true);
}