On Tue, Apr 27, 2010 at 1:17 PM, Adrian Lienhard <[email protected]> wrote:
> BTW, Lukas had pointed out that my implementation is incomplete. So before > integrating we should make sure the implementation covers all cases. > > Adrian > > Begin forwarded message: > > > From: "Lukas Renggli" <[email protected]> > > Date: October 21, 2008 6:28:32 PM GMT+02:00 > > To: "Pharo Development" <[email protected]> > > Subject: Re: [Pharo-project] Size of objects > > Reply-To: Pharo Development <[email protected]> > > > >> BTW, I think that would be a meaningful addition. Could somebody quickly > >> check the method to verify that I didn't do any miscalculation? > > > > The only problem I see is that variable objects might also have > > inst-vars. So you need to count the > > > > self class instSize * Smalltalk wordSize > > > I am not sure if I understood. Then the method should be something like this: sizeInMemory "Returns the number of bytes used by this object in memory (including its header)" | headerSize instanceSize | headerSize := (self class indexIfCompact > 0 ifTrue: [ 4 ] ifFalse: [ 8 ]). instanceSize := self class instSize * Smalltalk wordSize. instanceSize := instanceSize + (self class isVariable ifTrue: [ (self basicSize * (self class isBytes ifTrue: [ 1 ] ifFalse: [ Smalltalk wordSize ])) ]). ^ headerSize + instanceSize ? Thanks Mariano > > part in any case. > > > > Lukas > > > > On Apr 27, 2010, at 12:45 , Adrian Lienhard wrote: > > > I once sent some code to the mailing list (search for thread named "Size > of objects"). We should add this to the image. I think I named it > #sizeInMemory. > > > > Adrian > > > > On Apr 27, 2010, at 12:03 , Mariano Martinez Peck wrote: > > > >> Hi. I don't know if "memory occupation" is the better name. I just want > to > >> know the amount of memory that an object is occupying in RAM. I mean, > the > >> amount of bytes. > >> > >> Is this possible ? if true, how ? I would like to do it from both > sides: > >> image and VM. > >> > >> I checked both but I didn't find anything. > >> > >> Thanks in advance > >> > >> Mariano > >> _______________________________________________ > >> Pharo-project mailing list > >> [email protected] > >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > > > > _______________________________________________ > > Pharo-project mailing list > > [email protected] > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > _______________________________________________ > Pharo-project mailing list > [email protected] > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >
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