src/test/run-pass/task-comm-7.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54

use std;
import task;
import comm;
import comm::chan;
import comm::recv;
import comm::port;

fn main() { test00(); }

fn test00_start(c: comm::chan<int>, start: int, number_of_messages: int) {
    let i: int = 0;
    while i < number_of_messages { comm::send(c, start + i); i += 1; }
}

fn test00() {
    let r: int = 0;
    let sum: int = 0;
    let p = port();
    let number_of_messages: int = 10;
    let c = chan(p);

    let t0 = task::spawn_joinable {||
        test00_start(c, number_of_messages * 0, number_of_messages);
    };
    let t1 = task::spawn_joinable {||
        test00_start(c, number_of_messages * 1, number_of_messages);
    };
    let t2 = task::spawn_joinable {||
        test00_start(c, number_of_messages * 2, number_of_messages);
    };
    let t3 = task::spawn_joinable {||
        test00_start(c, number_of_messages * 3, number_of_messages);
    };

    let i: int = 0;
    while i < number_of_messages {
        r = recv(p);
        sum += r;
        r = recv(p);
        sum += r;
        r = recv(p);
        sum += r;
        r = recv(p);
        sum += r;
        i += 1;
    }

    task::join(t0);
    task::join(t1);
    task::join(t2);
    task::join(t3);

    assert (sum == number_of_messages * 4 * (number_of_messages * 4 - 1) / 2);
}