48 lines
1.4 KiB
Rust
48 lines
1.4 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use core::prelude::*;
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use core::oldcomm;
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use core::task;
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// Just a named container for our op, so it can have impls
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pub struct NominalOp<T> {
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op: T
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}
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impl<T: Copy> NominalOp<T>: Clone {
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fn clone(&self) -> NominalOp<T> { copy *self }
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}
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pub fn spawn_listener<A: Owned>(
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+f: fn~(oldcomm::Port<A>)) -> oldcomm::Chan<A> {
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let setup_po = oldcomm::Port();
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let setup_ch = oldcomm::Chan(&setup_po);
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do task::spawn |move f| {
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let po = oldcomm::Port();
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let ch = oldcomm::Chan(&po);
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oldcomm::send(setup_ch, ch);
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f(move po);
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}
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oldcomm::recv(setup_po)
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}
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pub fn spawn_conversation<A: Owned, B: Owned>
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(+f: fn~(oldcomm::Port<A>, oldcomm::Chan<B>))
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-> (oldcomm::Port<B>, oldcomm::Chan<A>) {
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let from_child = oldcomm::Port();
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let to_parent = oldcomm::Chan(&from_child);
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let to_child = do spawn_listener |move f, from_parent| {
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f(from_parent, to_parent)
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};
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(from_child, to_child)
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}
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