Subject: Re: persistent/restorable unix procs?
To: Mark W. Eichin <>
From: Perry E. Metzger <>
List: current-users
Date: 11/29/1995 10:58:13
"Mark W. Eichin" writes:
> There was a university project (I forget the name, but I think it
> began with a P, and it was done sometime around 1987-89) which
> modified libc to save away file descriptor state; you could then dump
> the image and have enough to restore later. (At least I think that was
> enough.) At the time, it meant relinking the program -- but these
> days, anything that matters has shared libraries, which simplifies the
> effort. Perhaps someone else will recall the name of the project I'm
> thinking of.

Jon Smith built a checkpoint-restart mechanism for Unix along those
lines around 1986 at Columbia. I played with using it for primitive
process migration. I don't remember what it was called.