[Haskell-cafe] Re: Python's big challenges,
Haskell's big advantages?
jonathanccast at fastmail.fm
Thu Sep 18 11:49:33 EDT 2008
On Thu, 2008-09-18 at 10:33 +0100, Simon Marlow wrote:
> Jonathan Cast wrote:
> > An OS thread (Linux/Plan 9) stores:
> > * Stack (definitely a stack pointer and stored registers (> 40 bytes on
> > i686) and includes a special set of page tables on Plan 9)
> > * FD set (even if it's the same as the parent thread, you need to keep a
> > pointer to it
> > * uid/euid/gid/egid (Plan 9 I think omits euid and egid)
> > * Namespace (Plan 9 only; again, you need at least a pointer even if
> > it's the same as the parent process)
> > * Priority
> > * Possibly other things I can't think of right now
> > A Concurrent Haskell thread stores:
> > * Stack
> > * Allocation area (4KB)
> Allocation areas are per-CPU, not per-thread.
Didn't know/didn't think through that. Thanks!
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