GC leaks debugging

[Andrew Haley]

On 04/01/2011 10:02 AM, Erik Groeneveld wrote:
> On Fri, Apr 1, 2011 at 10:45, Andrew Haley <aph@redhat.com> wrote:
>> On 01/04/11 09:39, Erik Groeneveld wrote:
>>> From reading about the
>>> GC, I understand that the GC knows what is a pointer and what not
>>> because there is type information associated with the Java objects.
>>> So I'd expect no black-listing at all.  It that a right observation?
>>
>> No.  Objects are scanned precisely, but the stack is not.
> 
> Thanks.  I think I can rule the stack out by reviewing/adapting my
> test program.  I'll do that first.
> 
>> Also, depending
>> on your compilation options, the data segments of your program may be
>> scanned conservatively.
> 
> I have to think about this one.  Which options are you thinking of?

-findirect-dispatch

With that option, everything except the stack is scanned precisely.  However,
there is some runtime overhead.

Andrew.