Re: need to focus on java performance?

[Andrew Haley <aph at redhat dot com>]

Per Bothner writes:
 > David Daney wrote:
 > > I imagine that most of the stack traces are needed for security checks, 
 > > and not exceptions.
 > 
 > Excuse me for asking probably a dumb question, since my knowledge of
 > Java security is pretty thin:
 > 
 > Why do we need to walk the stack for security checks, in the normal
 > case of code not using deprecated methods?
 > 
 > It seems to me we need a per-thread local (which of course aren't
 > free either) for the current AccessControlContext.

How would the context be set?  You could do this if every method
invocation set the AccessControlContext appropriate for its class
loader.  That would be expensive.

Andrew.