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Posted to modules-dev@httpd.apache.org by ed <ed...@s5h.net> on 2007/09/28 22:33:16 UTC
Loading permanenly memory area.
> Hello,
> How to load memory permanently between request?
>
> Server handles ap_hook_handler when request is made, but when request
> finish memory should be free ().
>
> Any method to load memory when module start with apache, and unload
> when apache shut down ?
Hi,
I've just joined this list, and was looking through the archives to find
a FAQ or something.
Apologies if this is already answered.
I think what you're looking for is something that can allocate global
memory, which is generally a bad idea - unless you're going to instate
your own locking mechanism, to prevent requests clobbering each other
with the memory.
void *global_pointer = NULL;
int module_handler( ... ) {
if( global_pointer == NULL ) {
global_pointer = malloc( BUFFER*20 );
/**
* uh oh, no free memory
*/
if( global_pointer == NULL ) {
return( EXIT_FAILURE );
}
}
}
Now, obviously the problem here, is that every request will try and
access the same block of memory, generally a bad idea. You will have to
put your own method of synchronisation into the module.
Generally, getting a memory from the kernel is no problem, and happens
very quickly, so it's not a big concern to call malloc once or twice per
request.
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