On 3/11/10 7:25 PM, Peter Lobsinger wrote:
So when we say something is "compiled down to Lorito" (eg: ops, pmcs, etc), we have access to the high-level op versions of these at runtime?
Yes, the high-level "virtual" ops would be stored as actual ops in both the bytecode and the JITed forms. This is good for more compact bytecode (fewer instructions) and for a faster JIT (JITed execution of large blocks of code, rather than individual invocation of the smaller low-level ops).
Now, when you get to the level of JITing entire subroutines, they may drop some security information about the ops within the subroutine for the sake of speed. It may be possible to propagate the information outward (so the JITed subroutine has the security properties of all the ops it contains, and is accepted/rejected by the sandbox based on those properties). Or, it may be a choice that individual applications have to make between speed and low-level control.
Allison _______________________________________________ http://lists.parrot.org/mailman/listinfo/parrot-dev
