1/*
2 * Copyright 2018 Google, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met: redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer;
8 * redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the
10 * documentation and/or other materials provided with the distribution;
11 * neither the name of the copyright holders nor the names of its
12 * contributors may be used to endorse or promote products derived from
13 * this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * Authors: Gabe Black
28 */
29
30#include <vector>
31
32#include "base/trace.hh"
33
34#include "systemc/ext/systemc"
35
36class Printer : public sc_core::sc_module
37{
38  public:
39    sc_core::sc_in<const char *> input;
40
41    SC_CTOR(Printer)
42    {
43        SC_THREAD(print);
44    }
45
46    using sc_core::sc_object::print;
47    void
48    print()
49    {
50        int i = 0;
51        while (true) {
52            wait(input.value_changed_event());
53            DPRINTFN("Word %d: %s\n", i++, input.read());
54        }
55    }
56};
57
58class Feeder : public sc_core::sc_module
59{
60  public:
61    sc_core::sc_in<bool> clk;
62    sc_core::sc_out<const char *> output;
63
64    std::vector<const char *> strings;
65
66    SC_HAS_PROCESS(Feeder);
67    Feeder(sc_core::sc_module_name, std::vector<const char *> _strings) :
68        strings(_strings)
69    {
70        SC_THREAD(feed);
71        sensitive << clk.pos();
72    }
73
74    void
75    feed()
76    {
77        int i = 0;
78        while (true) {
79            wait();
80            if (i >= strings.size())
81                sc_core::sc_stop();
82            else
83                output = strings[i];
84            i++;
85        }
86    }
87};
88
89int
90sc_main(int argc, char *argv[])
91{
92    std::vector<const char *> strings;
93    for (int i = 0; i < argc; i++)
94        strings.push_back(argv[i]);
95
96    sc_core::sc_clock clk;
97    sc_core::sc_buffer<const char *> buf;
98
99    Feeder feeder("feeder", strings);
100    feeder.clk(clk);
101    feeder.output(buf);
102
103    Printer printer("printer");
104    printer.input(buf);
105
106    sc_core::sc_start();
107
108    return 0;
109}
110