Damien Neil <[EMAIL PROTECTED]> wrote: > The JVM is a stack machine. JVM opcodes operate on the stack, not on > main memory. The stack is thread-local. In order for a thread to operate > on a variable, therefore, it must first copy it from main store to thread- > local store (the stack).
Silly me, yes of course, that's it. > Parrot, so far as I know, operates in exactly the same way, except that > the thread-local store is a set of registers rather than a stack. Except that we don't need this mulit-step variable access, because a P-register can refer to a shared PMC living in a different thread, which is a different threads interpreter->arena_base memory. leo