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From Foo Ji-Haw <>
Subject Re: No image creation in mod_perl (was RE: Apache2/MP2 Segfaults ...)
Date Tue, 28 Mar 2006 03:18:02 GMT
Hey Carl,

> The only place where forking is useful is where you want something to
> continue processing after sending the response back to the client.
> You can achieve the same effective result by calling 
> $r->child_terminate()
> (assuming your using pre-fork). The currently running child exits at 
> the end
> of the request freeing any memory it's allocated, and the main apache 
> server
> process will fork a new child to replace it if needed. 
This revelation of how Perl does not free up memory it allocates is 
worrying, especially as I do process large documents regularly.

If I read you right, you are saying that $r->child_terminate will force 
the current thread to terminate, causing Apache to create a new thread. 
Is that right? I use 'threads' in place of 'processes' as I refer to the 
Windows implementation of Apache.


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