28 lines
569 B
Rust
28 lines
569 B
Rust
// -*- rust -*-
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use std;
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import task;
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import comm;
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fn sub(parent: comm::Chan<int>, id: int) {
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if id == 0 {
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comm::send(parent, 0);
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} else {
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let p = comm::port();
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let ch = comm::chan(p);
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let child = task::spawn(|| sub(ch, id - 1) );
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let y = comm::recv(p);
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comm::send(parent, y + 1);
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}
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}
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fn main() {
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let p = comm::port();
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let ch = comm::chan(p);
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let child = task::spawn(|| sub(ch, 200) );
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let y = comm::recv(p);
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debug!{"transmission complete"};
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log(debug, y);
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assert (y == 200);
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}
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