shared memory in Erlang
Tue Jan 30 23:35:08 CET 2001
David Gould wrote:
> On Tue, Jan 30, 2001 at 09:12:44PM +0100, Karel Van Oudheusden wrote:
> > Hello,
> > Are there Erlang compilers that support shared memory between processes?
> > I do not really understand how database applications or network
> > applications can be implemented in Erlang efficiently without some kind
> > of form of shared memory. Only providing message passing does not seem
> > to be a good choice for these kind of applications.
> Erlang has a very strong process and communication model. I wonder what
> shared memory support between processes would look like in Erlang?
Karel might be talking about internal sharing memory between processes
which I find hard to picture in Erlang, ets tables maybe?
We've also thought about implementing shared memory for communication
between Erlang and the rest of the world. If the external (non-Erlang)
stuff wrote to the shared memory buffer and Erlang could read from it
when it needed the data. (Or it could go the other way around.)
> I mean,
> what would the language need in terms of syntax and semantics to support it?
Nothing special, some understanding of normal data structures. It
wouldn't have to be too complicated.
> I am having trouble picturing it fitting in without a great deal of
> collateral damage...
> Or do you mean, message passing implemented transparently by means of a
> shared memory?
> > Comparing Java with Erlang, I must conclude that Erlang is my first
> > choice except for this very important memory issue!
> But I certainly would not want to see Erlang become more like Java!
> David Gould
> SuSE, Inc., 580 2cd St. #210, Oakland, CA 94607 510.628.3380
> You left them alone in a room with a penguin?! Mr Gates, your men are
> already dead.
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