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Re: [Chicken-users] google summer of code
From: |
Graham Fawcett |
Subject: |
Re: [Chicken-users] google summer of code |
Date: |
Fri, 7 Mar 2008 12:01:48 -0500 |
On Thu, Mar 6, 2008 at 6:27 AM, Alaric Snell-Pym
<address@hidden> wrote:
> I wrote an efficient shared-memory lock-free queue system for a
> client once. They own the copyright, but I would happily mentor a
> student to build a somewhat more general and portable (this was
> specific to a few platforms) version of it in C and wrap it in
> chicken for lightweight interprocess goodness :-)
On reflection, I'd much rather see a really efficient IPC system like
this, rather than having a native-threaded Chicken. The overhead of a
trivial Chicken process is quite small, and multiple communicating
processes is much safer than a shared-everything threaded design.
Having a shared-memory version of remote-mailbox would be very useful:
if mailbox, remote-mailbox and sm-mailbox could share an API, we would
have a very powerful IPC abstraction.
Other than for concurrent designs, I think there is a case for native
threads when I/O is involved. I believe that GHC Haskell uses a
separate native thread for handling I/O, but (unless you use forkIO)
runs everything else in lightweight threads. Perhaps we could play a
similar game, and spawn native threads as I/O custodians, managed
under a very strict protocol that avoids GC contention and other
concurrency issues. Perhaps one I/O thread and select/epoll is enough.
> I'm also keen on a proper library/module system, though. I'd like to
> be able to use multiple macro systems in the same source file, for a
> start.
As long as I don't have to give up lowlevel macros, I'm happy. :-)
Graham
- Re: [Chicken-users] google summer of code, (continued)
- Re: [Chicken-users] google summer of code, Shawn Rutledge, 2008/03/05
- Re: [Chicken-users] google summer of code, Ivan Raikov, 2008/03/05
- Re: [Chicken-users] google summer of code, Alex Shinn, 2008/03/05
- Re: [Chicken-users] google summer of code, Ivan Raikov, 2008/03/05
- Re: [Chicken-users] google summer of code, Alaric Snell-Pym, 2008/03/06
- Re: [Chicken-users] google summer of code, Alex Shinn, 2008/03/06
- Re: [Chicken-users] google summer of code, felix winkelmann, 2008/03/07
- Re: [Chicken-users] google summer of code, Alaric Snell-Pym, 2008/03/10
- Re: [Chicken-users] google summer of code,
Graham Fawcett <=
- Re: [Chicken-users] google summer of code, Ivan Raikov, 2008/03/07
- Re: [Chicken-users] google summer of code, Graham Fawcett, 2008/03/07
- [Chicken-users] Re: Chicken MPI, Ivan Raikov, 2008/03/08
- [Chicken-users] Re: Chicken MPI, Graham Fawcett, 2008/03/08
- Re: [Chicken-users] google summer of code, felix winkelmann, 2008/03/10
- Re: [Chicken-users] google summer of code, Ivan Raikov, 2008/03/10
- Re: [Chicken-users] google summer of code, Felix Winkelmann, 2008/03/12
- Re: [Chicken-users] google summer of code, Ivan Raikov, 2008/03/12
- Re: [Chicken-users] google summer of code, Houman Zolfaghari, 2008/03/10
- Re: [Chicken-users] google summer of code, Tobia Conforto, 2008/03/11