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spawn_listener2 #2471
Description
Seeing how there is a comm::select2 I think that it would be useful to have a spawn_listener2. Fwiw the use case I have in mind is a task that allows other tasks to get copies of and mutate state shared by the tasks:
fn manage_state(get_state_port: comm::port<comm::chan<str>>, set_state_port: comm::port<str>)
{
let mut state = "default";
loop
{
alt comm::select2(get_state_port, set_state_port)
{
either::left(channel)
{
comm::send(channel, copy(state));
}
either::right(new_state)
{
state = new_state;
}
}
}
}
Activity
nikomatsakis commentedon May 31, 2012
why would you use two ports in place of a port with an enum message like:
?
jesse99 commentedon Jun 1, 2012
I was trying to leverage the type system so that reader tasks could only read state and writer tasks could only write state. It's probably not that big of a deal though and the code is simpler with an enum like the above.
catamorphism commentedon Jun 7, 2012
Closing since it sounds like there's a good workaround for this.
Auto merge of rust-lang#2471 - RalfJung:term, r=RalfJung
Add jq to deps (rust-lang#2471)
Merge pull request rust-lang#2471 from Darksonn/patch-1
Merge rust-lang#2471