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- Subject: Re: PATCH: Fully Resumable VM (yield across pcall/callback/meta/iter)
- From: skaller <skaller@...>
- Date: 16 Feb 2005 12:51:36 +1100
On Wed, 2005-02-16 at 04:15, David Jones wrote:
> On Feb 15, 2005, at 16:48, David Given wrote:
> > On Tuesday 15 February 2005 16:18, David Jones wrote:
> > [...]
> >> In particular when longjmp is
> >> invoked it is allowed to trash any local variable declared in the
> >> function that called setjmp (the one to which we are jumping), unless
> >> that variable is declared volatile.
> 2) only call setjmp from within a wrapper function. It doesn't have
> any locals, so none to trash. This is just a trick to get the compiler
> to emit the necessary stacking and unstacking (which will happen when
> you call the wrapper function).
I was about to post that too .. but it doesn't work,
from the man page:
" The stack context will be invalidated if the function which
called setjmp() returns."
John Skaller, mailto:email@example.com
snail: PO BOX 401 Glebe NSW 2037 Australia
Checkout the Felix programming language http://felix.sf.net