🚀 go-pugleaf

Objects are mapped in their reference.

String strLine;
strLine = new String();
^^^^^
    ^------- is now containing the memory-address of this object.

Same counts for classes, I believe.
How to do it with constants, I don't think it is possible with primairy
variable-types.

-Berny



Jordi Guitart <jguitart@ac.upc.es> schreef in berichtnieuws
96trij$4ns$1@defalla.upc.es...
> Hi,
>
> Is there any mechanism or tool to know the memory addresses where objects,
> classes, constants, etc are mapped?
>
> JGF
>
>

for what do you need this???  you cannot access this directly either...

    r.

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"Jordi Guitart" <jguitart@ac.upc.es> schrieb im Newsbeitrag news:96trij$4ns$1@defalla.upc.es...
> Hi,
> 
> Is there any mechanism or tool to know the memory addresses where objects,
> classes, constants, etc are mapped?
> 
> JGF
> 
> 

In article <96trij$4ns$1@defalla.upc.es>,
Jordi Guitart <jguitart@ac.upc.es> wrote:
>Hi,
>
>Is there any mechanism or tool to know the memory addresses where objects,
>classes, constants, etc are mapped?

    You could go native and look at the object from JNI... however,
do note that the GC moves things around at will, so any address will 
be temporary.

    /Mats

Jordi Guitart wrote:
> 
> Is there any mechanism or tool to know the memory addresses where objects,
> classes, constants, etc are mapped?

don't do it.  even if you could get access to this information you couldn't
do anything with it anyway (well, i suppose you could print it to the 
screen which would obviously be really useful!).

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Hi,

I don't want access objects directy. I'm making changes in the JVM and I
have memory problems, so I'd like to understand memory mappings to resolve
these problems.

Thanks

JGF

Jordi Guitart wrote:

> 
> I don't want access objects directy. I'm making changes in the JVM and I
> have memory problems, so I'd like to understand memory mappings to resolve
> these problems.

let me get this straight: you're altering the JVM and don't understand how
it is storing objects in memory!?!!  this worries me slightly.

if you haven't i'd suggest looking for the JVM specs on the sun website to
see if they mention anything about this.  and i guess that you should also
talk to the JVM people (whoever wrote your JVM and gave you the source code,
unless you're writing your own ... then i'd be really worried!) to see if
they can help.
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I'm only modifying a little part of the JVM (in fact, I'm not "modifying"
anything, I'm only replacing threads library with another one, and
unfortunately I have lateral memory problems, so I'm trying to discover
why?)

JGF

Wow. Talk about making life hard for yourself! The Sun crew haven't yet been
able to get Threading 100% right!

Ben

"Jordi Guitart" <jguitart@ac.upc.es> wrote in message
news:970j55$6af$1@defalla.upc.es...
> I'm only modifying a little part of the JVM (in fact, I'm not "modifying"
> anything, I'm only replacing threads library with another one, and
> unfortunately I have lateral memory problems, so I'm trying to discover
> why?)
>
> JGF
>
>