One of the fun aspects of this is that the dark-blue-going-
on-purple book (which I have) describes how global variables
are sometimes shared between threads if they're not declared
shared, while your linked page says "only data that is
explicitly requested to be shared will be shared between
threads".
I think both are correct within their frame of reference,
the latter page is not talking about mod_perl2 nor threads
created by Apache2.
I used to like new subjects to learn about...
cmac
On Dec 29, 2008, at 2:37 PM, André Warnier wrote:
cr...@animalhead.com wrote:
[...]
My own not very reliable 2 cent :
The mod_perl 2 User's Guide (Pub: Onyx Neon, authors: Stas Beckman
and Jim Brandt) has apparently only part of 2 pages (365-366) on
the subject.
Also, the Suse Enterprise Linux 10.x system that I recently
installed for a customer has a worker (threaded) Apache2 +
mod_perl2 installed by default.
None of the above constitute firm recommendations, but in the
absence of forecasts of doom, I would tend to see these as
encouraging signs.
Apart of the usual warnings about the underlying thread-safety of
underlying C libraries, there are apparently a couple of
potentially nasty side-effects, such as if you would be using chdir
() in some of your modules (because a chdir in one thread affects
all the others).
There is a reference in the book to this, which I have not checked
myself :
http://www.perl.com/lpt/2002/06/11/threads.html
