[erlang-questions] Re: Shared/Hybrid Heap
Thu Oct 14 10:22:52 CEST 2010
> You are missing the point -- or at least the point which I think
> Richard is making. In the scheme you propose, T2's execution will be
> influenced by a piece of data that _in principle_ is not shared. For
> example, T2 needs to be stopped executing or synchronized with T1 by
> garbage collection which might take place when process T1 allocates
> some big D2.
> How is that different than the two processes sharing everything?
I don't understand you. Are you saying that it is impossible to
implement multithreading unless the threads share everything, and
garbage collection will be slow?
What about two erlang processes that share a binary. Isn't that how it
What about two erlang processes that share a nif resource?
What about other languages and virtual machines. They have multithreading.
We must be talking past each other here.
By the way, I am not advocating such a change to erlang. I think you can
get around shared memory by choosing the right processes, partition data
It is only the most computationally intensive cases where you can't, and
there one can use a nif resource or some external way of sharing data.
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