| CC: | EvanCarroll <melazyboy [...] gmail.com> |
| Subject: | Cache::FastMmap doesn't support threads |
Cache::FastMmap does not support threads. From 1.15 onwards there's a
CLONE method which just does a die to make this clear. Previously there
would be strange crashes.
I don't consider this a high priority for a couple of reasons
1. If you're using threads, then you can just use shared variables to
communicate between threads anyway
2. If you're using mod_perl2 in apache2, then the standard forking model
is better than the perl threads model anyway. In perl, whenever you
create a new thread, the interpreter has to manually clone all
non-shared perl objects, an expensive operation. In a forking model,
it's up to the OS to do the copying and it can do it in a lazy
"copy-on-write" way which is much more efficient.
I'm not planning on fixing this, but if someone provides a patch that
does, I'll consider including it.