ruby-dev

まつもと ゆきひろです

In message "[ruby-dev:24106] return value of Process.daemon"
    on 04/08/18, Tanaka Akira <akr@m17n.org> writes:

|えぇと、めでたく Process.daemon が実装されて嬉しいのですが、返値に意味
|のない場合には、返値は 0 よりも nil のほうが意外でないように思うのです
|が、0 のほうが適切な理由はあるでしょうか?

システムコールやライブラリ関数と直接対応しているメソッドは、
原則的に戻り値をそのまま戻しています。daemon(3)はゼロ以外の
値を返す時には例外になりますから、結果的にいつもゼロを返すこ
とになります。

|あと、ChangeLog は?

Sat Aug  7 03:08:21 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>

	* process.c (proc_daemon): new method.  should be modified for
	  platforms without /dev/null.

です。"should be modified for platforms without /dev/null."
はコードを書いた時の感想ですが、実は不要かもしれません。fork
があって/dev/nullがない環境は思いつきませんし。

                                まつもと ゆきひろ /:|)

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[ruby-dev:24108] Re: return value of Process.daemon

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