> Followup to: <Pine.LNX.3.95.961028193059.22451A-100000@xeo.net>
> By author: psychos@xeo.net
> In newsgroup: linux.dev.kernel
> >
> > On Mon, 28 Oct 1996, Eduardo Diaz Comellas wrote:
> >
> > > Hi!
> > >
> > > I was wandering how to stop a process, reboot the machine, and
> > > restart that process. Is there a way to provoke a program to dump
> > > itself, and restart it after the reboot?
> > >
> > > Maybe we can define a new executable format for it to work ;-)
> > >
> > > Cheers!
> >
> > This would be practically impossible as you'd have to load the program
> > into the exact same memory space or all of its pointers would be bad...
> > Memory fragmentation issues would make it very hard to get any program to
> > occupy the exact same space it did before.
> >
>
> Not at all. All the pointers are referring to virtual memory, which
> is customized for each process anyway. You can force a process to
> dump core by sending it a SIGQUIT; you can then use gdb to restart it,
> or use a program called "undump" to turn it into an executable.
> However, the program will have lost all file descriptors, so it needs
> to be written to accommodate that.
>
> -hpa
> --
> Not speaking for Transmeta in any shape, way, or form.
>
Wouldn't it be possible to just adjust all the pointers based on the new
memory location?
Simply compute the difference between the old and new... then adjust them
all.
-Chuck
s253343@gettysburg.edu
(717)-337-8212