The short answer is, you can't do that. There is no way to share Perl objects between processes. There are things like IPC::Shareable that make it look like you can, but they all do the stuff you mentioned (serialization, locking, etc.) behind the scenes and just move objects around between processes.

There are two pieces of good news though. The first is that there are ways of sharing data that are very fast, like IPC::MM and Cache::Mmap, despite all the machinery. The second is that you probably don't need to do this at all. If you create things before the fork in startup.pl, each child process will get a copy. If you need to share data, you have the above-mentioned methods and your RDBMS. If you need to coordinate access to some shared resource, you can do locking in various ways.

If you explain why you think you need a singleton, we might be able to offer more specific advice about what to do.

In reply to Re: sharing a complex set of objects between httpd processes by perrin
in thread sharing a complex set of objects between httpd processes by thpfft

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