This seems similar to having a bookmark 'url' interface into the gui, that
contains enough information to restore state, or has a key to something that
has that extra info about what data are current. And that seems like enough
of a good thing to want in and of itself.
It also seems similar to any undo functionality (restart and run commands to
n-1) , also a good enough thing to want by itself.
Could one solution logging certain calls bring all three benefits? Snapshot
+ command line interface + undo?
On Sun, Mar 20, 2011 at 11:03 PM, Andrey Onymov <anonym...@gmail.com> wrote:
> On Mon, 21 Mar 2011 10:34:21, Slava Pestov wrote:
>
> > The problem with snapshotting the state of the UI with all open
> > windows and gadgets is that it gets really tricky for gadgets with
> > associated native resources, like fonts, vertex buffers, textures, and
> > so on. Squeak doesn't run into this difficulty because it renders to a
> > framebuffer and implements everything itself...
> >
> > Slava
> >
>
> On Mon, 21 Mar 2011 16:46, Joe Groff wrote:
> > Resuming an entire program is tricky. While the Factor VM knows how to
> > freeze the Factor heaps and thaw and revive them, on its own, it doesn't
> > know how to recreate the UI resources, network connections, and other
> > externalities a real program depends on. Programs can register startup
> > hooks to perform these sorts of (re)initialization tasks, but it's not
> > automatic. A program in Factor could potentially support a full resume,
> > if all its libraries properly register startup hooks to recreate their
> > external dependencies, and the program saved a continuation object to be
> > resumed from the saved image.
> >
> > -Joe
>
> So, basically, you'd need ability to set up a hook that fires when
> building a snapshot and saves another hook to restore the state on
> restart (and support for this in all the libs, of course).
>
> Quite a hassle to implement.
>
> And anyways, start-up times for image with all dependencies compiled in is
> quite low, so wouldn't it be easier to implement some common framework for
> state persist/restore on applications level?
>
>
>
>
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--
Jim
"I'm for extending the working Medicare program for our seniors all the way
back to contraception, so Americans can concentrate on living their lives
without fear of changing a job, going bankrupt from deductibles or fighting
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