From: Christian Neukirchen <chneukirchen@...>
Date: 2008-12-24T05:51:28+09:00
Subject: [ruby-core:20842] Re: [Bug #921] autoload is not thread-safe

Dave Thomas <dave@pragprog.com> writes:

> On Dec 22, 2008, at 1:44 PM, Charles Oliver Nutter wrote:
>
>> It probably could use the same lock; the trickier bit is that in
>> between encountering the autoload and requiring the file there's
>> already state changes happening. So I think we still need to ensure
>> the autoload marker is mutated under lock as well.
>>
>> To be honest, I'm not sure autoload is really even possible to make
>> safe in the presence of threads...the design of it may be inherently
>> incompatible. But I'm willing to talk through some possibilities and
>> see what we can come up with.
>
> Yeah--you'd need to make require transactional somehow.
>
> Stupid question: does anyone actually use autoload?

Rack does.  Merb does as well.

-- 
Christian Neukirchen  <chneukirchen@gmail.com>  http://chneukirchen.org