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Posted by Jason Barnett on 01/07/05 03:41
>
> Does "not up to date" mean the code isn't working with current releases
> of php 4 or 5? I'd be interested in giving it a try.
>
I believe this is the case. AFAIK the APC library doesn't support PHP5
or at least it didn't when I looked at it. If you want to pitch in
support for APC you should just download it (or PEAR INSTALL it from the
command line to try it :) )
> Forgive my ignorance of Apache and PHP internals, but I'm not
> understanding the concept of your implementation. I'm not enivisioning
> allowing a PHP script to be able to meddle with the Apache request
> process.
>
> I'm picturing an extension that would simply not allow an uncautious or
> unknowing scripter to ruin the server, but would only allow him to store
> all his app defs and data model startup stuff in a one-shot performance
> booster. It could even do it in a separate (CLI?) interpreter and copy
> the data over (but only once!) to the Apache-embedded interpreter using
> a shared memory resource... hmmm.
So your process is something like (correct me if I misunderstand):
<php_script>
- have a PHP script with all global variables and class definitions that
will be available to *all* scripts
- parse the PHP file to generate default values for variables
- as a side note: would this include any autoglobals such as
$_SERVER, $_ENV, etc. ? I would think not at least for our first version.
- have a function translate all object definitions into the binary
version of the definition and return that definition as a string.
- have a function translate each PHP variable into the binary value and
return these as a string as well.
- write all of these strings to some file (test.static)
</php_script>
Restart server. Here is where I get really fuzzy, mostly because I have
never written an extension. ;)
<extension>
- During MINIT
- Lock file (test.static) for reading
- We read from the source file (test.static)
- We initialize the non-object variables in a PHP-usable form
- We *try* to initialize objects. Likely to be some issues here, for
example, when a class definition changes.
- As a side note, should we create a superglobal array to store
these global variables similar to $_SESSION? Maybe $_SHARED? It is
likely a pain to implement, but would be cool. :)
- Module needs a fetch function to get the value in shared memory.
- It needs to get a "lock" to read to that part of shared memory
(forgive me but I don't know the right term here)
- For objects, this needs to check access level (private, protected,
public) and return appropriate errors
- Module needs a write function to write to shared memory.
- It needs to get a "lock" to write to that part of shared memory
- For objects, this needs to return appropriate errors for modifying
properties (i.e. private, protected, public) and return appropriate errors
- During shutdown (I think it's called MSHUTDOWN)
- Lock file (test.static) for writing
- Recreate the test.static file
</extension>
The above suggestion is quite messy and probably not thread-safe, but
it's a start. ;)
--
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