Re: [C2-devel] NullPointerException in ContextClassLoaderLocator

[Stanislaw O. <sta...@os...>]

> I feel a bit old now after reading your message ..  by still sticking to
> C/C++ (remember the old days? .. the C programming language ...) :-))
>

No worries, I'm old enough to have coded Motorola 68000 assembly and C on an
Amiga :-)


> Regarding your suggestion, Yes, when Apache/PHP is started (like said, PHP5
> runs as a module in my development environment) the JVM is created upon
> module initialization. This is due to the fact, that one process may only
> run _one_ JVM at a time. As I mentioned in my first post, I had to rewrite
> the initialization part of the C Carrot2 Api Core, because of problems
> recreating the JVM all the time (at PHP5 class construction/destruction).
> Even though, it was a waste, why always destroying and re-creating a new
> JVM
> (with all the costs that come with that) and not  using the attach/detach
> thread functionality. With this changed, it is more effective and and way
> faster (still need to do some benchmarking on that). Also, for a stable
> processing of larger document sets, I added 256MB heap at JVM startup (via
> -Xmx256m) option. Well, I need to do heavy testing on all that!
>

Creating a JVM for each clustering call would be a huge overhead. Also, in
such cases, the Just In Time compiler wouldn't have a chance to optimize the
Java code at runtime (this happens for frequently executed areas), slowing
things down even more. -Xmx256m at startup is a good idea too.


> I changed the processing controller to
> "ControllerFactory.createPooling();".
> I can not find the method "getPooling()". Is that new? I am using the API
> 3.4.1 at this time. I will upgrade soon to a more recent version. Before
> that I just wanted to get the complete system running.
>

Oh, sorry, I was writing off the top of my head, it's createPooling(), not
getPooling(). There are two variants actually:

http://download.carrot2.org/stable/javadoc/org/carrot2/core/ControllerFactory.html#createPooling%28%29
(garbage-collected pool, variable pool size)

http://download.carrot2.org/stable/javadoc/org/carrot2/core/ControllerFactory.html#createPooling%28int%29
(fixed pool size)

Cheers,

S.