module.cc revision 12950 
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 "systemc/core/module.hh"
31
32#include <cassert>
33#include <list>
34
35#include "base/logging.hh"
36
37namespace sc_gem5
38{
39
40namespace
41{
42
43std::list<Module *> _modules;
44Module *_new_module;
45
46} // anonymous namespace
47
48Module::Module(const char *name) : _name(name), _sc_mod(nullptr), _obj(nullptr)
49{
50    panic_if(_new_module, "Previous module not finished.\n");
51    _new_module = this;
52}
53
54void
55Module::finish(Object *this_obj)
56{
57    assert(!_obj);
58    _obj = this_obj;
59    _modules.push_back(this);
60    _new_module = nullptr;
61}
62
63void
64Module::pop()
65{
66    panic_if(!_modules.size(), "Popping from empty module list.\n");
67    panic_if(_modules.back() != this,
68            "Popping module which isn't at the end of the module list.\n");
69    panic_if(_new_module, "Pop with unfinished module.\n");
70    _modules.pop_back();
71}
72
73Module *
74currentModule()
75{
76    if (_modules.empty())
77        return nullptr;
78    return _modules.back();
79}
80
81Module *
82newModule()
83{
84    return _new_module;
85}
86
87} // namespace sc_gem5
88