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From "William A. Rowe, Jr." <wr...@rowe-clan.net>
Subject Re: How to identify apache memory
Date Mon, 05 Mar 2007 19:42:20 GMT
Joachim Zobel wrote:
> Am Montag, den 05.03.2007, 17:23 +0000 schrieb Nick Kew:
>> On Mon, 05 Mar 2007 07:55:06 +0100
>> Joachim Zobel <jzobel@heute-morgen.de> wrote:
>>
>>> I can however provide my own memmory allocation functions to libxml2,
>>> so if I can identify apache memory, I can work around this.
>> Have you looked at wrapping apr_palloc and [do nothing] as malloc
>> and free respectively?
>>
>> I have some recollection of contemplating that with libxml2,
>> but I haven't pursued it.
> 
> Yes, that is possible, see
> http://xmlsoft.org/html/libxml-xmlmemory.html#xmlMemSetup. The problem
> is that I don' want to wrap [do nothing] as free, because malloc and
> free are global functions and because I am inside a filter. So I am
> looking for a way to do
> 
> if (!allocated_by_apache(ptr) {
>   free(ptr);
> }

Just register one of two free functions as cleanups of the pool, based
on the origin of the data.

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