RFC: AccessController merge

[Gary Benson]

Gary Benson wrote:
> Andrew Haley wrote:
> > I'm a bit concerned about efficiency.  For one example: OK, we walk
> > the stack -- we have to do that -- but we create a string for every
> > method name , and the only purpose of doing so AFAICS is to compare
> > it with "doPrivileged".  We then throw away all of those strings we
> > so laboriously constructed...
> 
> I see what you mean.  Another thing is that if there is a doPrivileged
> there then a chunk of the generated stack trace will be ignored.  I
> guess Casey wanted the code he put in stacktrace.cc to be generic.

Ok, so I'm thinking along the lines of the attached patch to solve
these two problems.  I thought I'd throw it out to the list before
I sit down and write the native bits in case there's any obvious
inefficiences that would make it just as bad.  Does it look ok?

Cheers,
Gary