From: Nobuyoshi Nakada <nobu@...>
Date: 2010-12-18T14:26:45+09:00
Subject: [ruby-core:33765] Re: unnecessary mkdir(lock) in tempfile.rb

Hi,

At Fri, 10 Dec 2010 06:13:52 +0900
Eric Wong wrote in [ruby-core:33657]:
> Since tempfile.rb uses the O_EXCL flag as of r816 (July 2000), there is
> no reason for the use of a temporary directory as a (broken) locking
> mechanism.  From what I can tell, the mkdir "lock" was introduced in
> introduced in July 1998 at r280, so it precedes the addition of O_EXCL
> by 2 years and it's a leftover remnant.

Because O_EXCL doesn't work on NFS.

-- 
Nobu Nakada