Re: custom background thread and module sharing a data structure

Hi Sorin, Sorin Manolache wrote: On Wed, Mar 11, 2009 at 02:08, Andrej van der Zee andrejvander...@gmail.com wrote: Hi, I need to modify Apache and run one custom background thread. In addition, my custom modules have to be able to share a data structure with this background thread.

Re: custom background thread and module sharing a data structure

Hi Saju, For the worker mpm, both cross thread and cross process protection will be needed. apr_proc_mutex.h family supplies cross-process protection, apr_thread_mutex.h provides cross thread protection. You locking method would be a wrapper method that first obtains a process level lock,

Re: custom background thread and module sharing a data structure

Hi, Thanks for your comments. See below... Worker mpm is a multithreaded, multiprocess mpm. Multiple child processes host multiple worker threads that run your module code. If your module services 2 concurrent requests in 2 different threads in the same process and both the threads need to

Re: custom background thread and module sharing a data structure

Andrej van der Zee wrote: Hi, Thanks for your comments. See below... Worker mpm is a multithreaded, multiprocess mpm. Multiple child processes host multiple worker threads that run your module code. If your module services 2 concurrent requests in 2 different threads in the same process and

Re: custom background thread and module sharing a data structure

Hi, My point is that within a single process, multiple threads can service requests that can end up firing your module code. If you only do process locking you can still have more than 1 thread executing your module code at the same time. Just a process level lock will *not* guarantee

Re: custom background thread and module sharing a data structure

Hi, Thanks for the info. For the worker mpm, both cross thread and cross process protection will be needed. apr_proc_mutex.h family supplies cross-process protection, apr_thread_mutex.h provides cross thread protection. You locking method would be a wrapper method that first obtains a

Re: custom background thread and module sharing a data structure

Sorin Manolache wrote: On Wed, Mar 11, 2009 at 02:08, Andrej van der Zee andrejvander...@gmail.com wrote: Hi, I need to modify Apache and run one custom background thread. In addition, my custom modules have to be able to share a data structure with this background thread. Did anybody do this

Re: custom background thread and module sharing a data structure

Hi, Yes, I did this. I will send you a commented source file sometimes today or early tomorrow (Central European Time), I don't really have time now. Great, I will be waiting for that! Thanks, Andrej

custom background thread and module sharing a data structure

Hi, I need to modify Apache and run one custom background thread. In addition, my custom modules have to be able to share a data structure with this background thread. Did anybody do this before? Is there an example I can use as a starting point? Thank you, Andrej -- Andrej van der Zee