[rvm-research] How to record objects' read/write times

Hi,every one

  I want to record objects' read and write times. As far as I know,
the Write Barrier is inserted before every Pointer update( object
assignment ), so I can modify the Write Barrier to record the
reference  times of the source object. But I know the reference times
is not equal to the write times of the   source object. Such as:

class a{
  ........
}

class b{

a test =new a();

double array_double[ ];
int   array_int[];

....
}


and the write barrier will only be inserted before the: (Is this right ?)

b.test=a ; //pointer update

but these assignment below will be ignored. But I think these
assignments will contribute the main read/write times.

for(i=0;i<Const;i++)
   array[i]=...
   array_int[i]===


I have no idea how to get the objects' read/write times information
without bring in too much performance cost.

Any response will be appreciated. Thank you vey much.


-- 
ChenXi Wang
ICT.CAS China

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