[rvm-research] Call-Site Information

Hi All,

Hello from PerformanceLab @ Ghent University in Belgium. I want to ask if
there is support in JikesRVM to identify the call-site of an allocation.
Suppose I have the code below:

1  public IntersectionState() {
2       stack = new StackNode[MAX_STACK_SIZE * 2];
3      for (int i = 0; i < stack.length; i++)
4            stack[i] = new StackNode();
5        rstack = new float[53 * 256];
6    }

Each time a new object is allocated (line no. 4 above), I want to store the
call-site information (line 4) in the header of the object. Is it possible
to get the unique identity of the method and index within the method, where
a new object is being allocated from?

There are some routines in runtime/Magic.java that let you get the current
frame pointer or the id of the compiled method, but I am not sure if they
usable from within MMTk(?) Does anyone know an an easy way to get the site
information at allocation time?

Thanks in advance!

-- 
*Shoaib Akram*
*ELIS - Gent University*
*Belgium*

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