Ruby 1.9.2 リファレンスマニュアル > ライブラリ一覧 > objspaceライブラリ > ObjectSpaceモジュール > count_nodes

module function ObjectSpace.#count_nodes

count_nodes(result_hash = nil) -> Hash [added by objspace]

Counts nodes for each node type.

This method is not for ordinary Ruby programmers, but for MRI developers who have interest in MRI performance and memory usage.

It returns a hash as: {:NODE_METHOD=>2027, :NODE_FBODY=>1927, :NODE_CFUNC=>1798, ...}

If the optional argument, result_hash, is given, it is overwritten and returned. This is intended to avoid probe effect.

The contents of the returned hash is implementation defined. It may be changed in future.

This method is not expected to work except C Ruby.