Re: [9front] Spew's Concurrency Extension

[cinap_lenrek@felloff.net]

the paper states:

"A channel receive operation val = @chan is rewritten as:
recv(c, c->@out); val = c->@out;"

this is wrong, because channels are a shared resoure, and
you share the intermediate values. so if i have two processes,
doing the recive operation, they'll trash each others
c->@out values. the same applies to send of course.

say, the recv() completes on one process, then scheduler
comes it and runs the other processes recv() overriding
the @out member of the struct.

also note, that recv() can take a nil argument if you do
not need the value, but complete the recv() operation.
you do not need dummy value.

--
cinap