From: ara.t.howard@...
Date: 2006-10-25T07:27:22+09:00
Subject: Re: File#flock as a cross-process mutex

On Wed, 25 Oct 2006 khaines@enigo.com wrote:

> On Wed, 25 Oct 2006 ara.t.howard@noaa.gov wrote:
>
>> note that this is file based, not flock based so, while the performance 
>> isn't
>> that of flock, it's not bad either.  though i'm guessing from your use case
>> you are locking too often...
>
> It works very well, but doesn't work on Windows, though.  Ara, if I sent you 
> my hack that provides flock based locking if a) specifically requested or b) 
> the default file based algorithm fails, would you be interested in 
> integrating it into your current codebase, in a less ugly fashion?
>
> That would render your lockfile.rb very cross-platform capable.
>
> Kirk Haines

i'm interested.  remember though that flock will fail if rpc.statd isn't
running is firewalled (common).  also, flock locks and fcntl (posix) are
incompatible on many *nixes... it's damn ugly if you ask me.  anyhow, it would
be good to have a a cross platform lockfile lib.  send me some or code or just
you thoughts.

cheers.

-a
-- 
my religion is very simple.  my religion is kindness. -- the dalai lama