File: t_mailbox_concurrent.v

package info (click to toggle)
verilator 5.038-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 162,552 kB
  • sloc: cpp: 139,204; python: 20,931; ansic: 10,222; yacc: 6,000; lex: 1,925; makefile: 1,260; sh: 494; perl: 282; fortran: 22
file content (49 lines) | stat: -rw-r--r-- 1,037 bytes parent folder | download | duplicates (2)
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
// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2024 by Liam Braun.
// SPDX-License-Identifier: CC0-1.0

module t();
    mailbox #(int) m;

    task automatic test_get;
        int v;
        m.get(v);
        // Only one thread should be here at a time (mailbox empty)
        $display("mailbox read %0t", $time);
        #1;
        m.put(v);
    endtask

    task automatic test_put;
        int v;
        m.put(42);
        // Only one thread should be here at a time (mailbox full)
        $display("mailbox write %0t", $time);
        #1;
        m.get(v);
    endtask

    initial begin
        m = new(1);
        m.put(42);

        fork
            test_get();
            test_get();
            test_get();
        join

        m = new(1);

        fork
            test_put();
            test_put();
            test_put();
        join

        $write("*-* All Finished *-*\n");
        $finish;
    end
endmodule