What about if the '$tree' is a static variable? 
BEGIN {
  $tree = {};
  sub createTree
  {
      # we create big tree ...
  }
  sub deleteTree
  {
      $tree = undef;  # or $tree = {};
  }
}

createTree();
deleteTree();

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Is this also apply?

In reply to Re: Re: Deallocating HASH pointer by Doraemon
in thread Deallocating HASH pointer by Anonymous Monk

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