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From Gregory Shimansky <gshiman...@apache.org>
Subject Re: [drlvm]Help understanding string literal creation
Date Thu, 10 Apr 2008 07:58:24 GMT
On 10 April 2008 Aleksey Shipilev wrote:
> Hi Megha!
>
> Probably you're on the right way. Modifying the String class is tough
> task since it is kernel class and should be provided with appropriate

Actually it is formally not a kernel class. It is not included with other 
kernel classes in DRLVM. But VM uses the knowledge of field names in String 
that hold the data (they are count, offset and value).

> support from the VM. vm_strings.cpp is the part of DRLVM that provides
> such the support. You must be able to recompile it during the normal
> build process of DRLVM then, and particularly this thing would reside
> in libharmonyvm.so or harmonyvm.dll.
>
> Thanks,
> Aleksey.
>
> On Thu, Apr 10, 2008 at 6:18 AM, Megha Chauhan <megchau@gmail.com> wrote:
> > > Hello,
> > >
> >  > I am a graduate student at the university of Illinois at chicago,USA.
> >  > As part of my research I have modified the String class of harmony
> >  > JDK. I have added another character array(value_sample) to the class
> >  > which keeps a copy of the value array. Now the problem I am facing is
> >  > in the case of a string literal since no constructor for the string
> >  > class is called explicitly , the value of value_sample array(which was
> >  > added by me) is set to null. I have tried to look into creation of
> >  > string constants but have not found much except that it is
> >  > instantiated by the native code at compile time. I have looked in to
> >  > the vm_strings.cpp class and have seen that the VM initialises the
> >  > fields for String object in the init_fields method.
> >  > I was thinking of adding the new filed I have crested here and
> >  > recompiling the code.
> >  > Am I on the right track?
> >  > Also I would like to know which DLL file holds the code for
> >  > vm_string.cpp class and how can I recompile the DLL ?
> >  > Your help will be greatly appreciated as I have been struggling with
> >  > this issue for more than a month now.
> >  > Thanks and Regards
> >  > Megha Chauhan



-- 
Gregory

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