Messages in this thread | | | Date | Wed, 11 Jul 2001 18:07:58 -0700 | From | "H. Peter Anvin" <> | Subject | Re: new IPC mechanism ideas |
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Rajeev Bector wrote: > > The point is that you can do IPC using > this scheme which is > 1) protected (as compared to a shared > memory (shm) scheme in which any process > can write anywhere and corrupt > everything) > > 2) involves only 1 copy. >
You can still do it in user space, by having individual r/w shm mappings to the controlling process, and ro mappings to the other processes; it's still only one copy.
Introducing new forms of IPC adds to the complexity of the programming model which is already too complex. It therefore requires substandial justification (unless you're doing it as a homework project in which case you shouldn't be posting here), including presenting real-world applications which cannot be properly served by current forms of IPC.
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