module.cc revision 13046:3a5e942051db 
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
34#include "base/logging.hh"
35
36namespace sc_gem5
37{
38
39namespace
40{
41
42std::list<Module *> _modules;
43Module *_new_module;
44
45Module *_callbackModule = nullptr;
46
47} // anonymous namespace
48
49Module::Module(const char *name) : _name(name), _sc_mod(nullptr), _obj(nullptr)
50{
51    panic_if(_new_module, "Previous module not finished.\n");
52    _new_module = this;
53}
54
55Module::~Module() { allModules.remove(this); }
56
57void
58Module::finish(Object *this_obj)
59{
60    assert(!_obj);
61    _obj = this_obj;
62    _modules.push_back(this);
63    _new_module = nullptr;
64    // This is called from the constructor of this_obj, so it can't use
65    // dynamic cast.
66    sc_mod(static_cast<::sc_core::sc_module *>(this_obj->sc_obj()));
67    allModules.emplace_back(this);
68}
69
70void
71Module::pop()
72{
73    panic_if(!_modules.size(), "Popping from empty module list.\n");
74    panic_if(_modules.back() != this,
75            "Popping module which isn't at the end of the module list.\n");
76    panic_if(_new_module, "Pop with unfinished module.\n");
77    _modules.pop_back();
78}
79
80Module *
81currentModule()
82{
83    if (_modules.empty())
84        return nullptr;
85    return _modules.back();
86}
87
88Module *
89newModule()
90{
91    return _new_module;
92}
93
94void callbackModule(Module *m) { _callbackModule = m; }
95Module *callbackModule() { return _callbackModule; }
96
97std::list<Module *> allModules;
98
99} // namespace sc_gem5
100