sc_process_handle.cc revision 12960 
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 "base/logging.hh"
31#include "systemc/core/process.hh"
32#include "systemc/core/scheduler.hh"
33#include "systemc/ext/core/sc_main.hh"
34#include "systemc/ext/core/sc_process_handle.hh"
35
36namespace sc_core
37{
38
39const char *
40sc_unwind_exception::what() const throw()
41{
42    panic("%s for base class called.\n", __PRETTY_FUNCTION__);
43}
44
45bool
46sc_unwind_exception::is_reset() const
47{
48    panic("%s for base class called.\n", __PRETTY_FUNCTION__);
49}
50
51sc_unwind_exception::sc_unwind_exception() {}
52sc_unwind_exception::sc_unwind_exception(const sc_unwind_exception &) {}
53sc_unwind_exception::~sc_unwind_exception() throw() {}
54
55
56const char *
57sc_process_b::name()
58{
59    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
60    return "";
61}
62
63const char *
64sc_process_b::kind()
65{
66    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
67    return "";
68}
69
70
71sc_process_b *
72sc_get_curr_process_handle()
73{
74    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
75    return nullptr;
76}
77
78
79sc_process_handle::sc_process_handle() : _gem5_process(nullptr) {}
80
81sc_process_handle::sc_process_handle(const sc_process_handle &handle) :
82    _gem5_process(handle._gem5_process)
83{
84    if (_gem5_process)
85        _gem5_process->incref();
86}
87
88sc_process_handle::sc_process_handle(sc_object *obj) :
89    _gem5_process(dynamic_cast<::sc_gem5::Process *>(obj))
90{
91    if (_gem5_process)
92        _gem5_process->incref();
93}
94
95sc_process_handle::~sc_process_handle()
96{
97    if (_gem5_process)
98        _gem5_process->decref();
99}
100
101
102bool
103sc_process_handle::valid() const
104{
105    return _gem5_process != nullptr;
106}
107
108
109sc_process_handle &
110sc_process_handle::operator = (const sc_process_handle &handle)
111{
112    if (_gem5_process)
113        _gem5_process->decref();
114    _gem5_process = handle._gem5_process;
115    if (_gem5_process)
116        _gem5_process->incref();
117    return *this;
118}
119
120bool
121sc_process_handle::operator == (const sc_process_handle &handle) const
122{
123    return _gem5_process && handle._gem5_process &&
124        (_gem5_process == handle._gem5_process);
125}
126
127bool
128sc_process_handle::operator != (const sc_process_handle &handle) const
129{
130    return !(handle == *this);
131}
132
133bool
134sc_process_handle::operator < (const sc_process_handle &other) const
135{
136    return _gem5_process < other._gem5_process;
137}
138
139void
140sc_process_handle::swap(sc_process_handle &handle)
141{
142    ::sc_gem5::Process *temp = handle._gem5_process;
143    handle._gem5_process = _gem5_process;
144    _gem5_process = temp;
145}
146
147
148const char *
149sc_process_handle::name() const
150{
151    return _gem5_process ? _gem5_process->name() : "";
152}
153
154sc_curr_proc_kind
155sc_process_handle::proc_kind() const
156{
157    return _gem5_process ? _gem5_process->procKind() : SC_NO_PROC_;
158}
159
160const std::vector<sc_object *> &
161sc_process_handle::get_child_objects() const
162{
163    static const std::vector<sc_object *> empty;
164    return _gem5_process ? _gem5_process->get_child_objects() : empty;
165}
166
167const std::vector<sc_event *> &
168sc_process_handle::get_child_events() const
169{
170    static const std::vector<sc_event *> empty;
171    return _gem5_process ? _gem5_process->get_child_events() : empty;
172}
173
174sc_object *
175sc_process_handle::get_parent_object() const
176{
177    return _gem5_process ? _gem5_process->get_parent_object() : nullptr;
178}
179
180sc_object *
181sc_process_handle::get_process_object() const
182{
183    return _gem5_process;
184}
185
186bool
187sc_process_handle::dynamic() const
188{
189    return _gem5_process ? _gem5_process->dynamic() : false;
190}
191
192bool
193sc_process_handle::terminated() const
194{
195    return _gem5_process ? _gem5_process->terminated() : false;
196}
197
198const sc_event &
199sc_process_handle::terminated_event() const
200{
201    static sc_event non_event;
202    return _gem5_process ? _gem5_process->terminatedEvent() : non_event;
203}
204
205
206void
207sc_process_handle::suspend(sc_descendent_inclusion_info include_descendants)
208{
209    if (!_gem5_process)
210        return;
211    _gem5_process->suspend(include_descendants == SC_INCLUDE_DESCENDANTS);
212}
213
214void
215sc_process_handle::resume(sc_descendent_inclusion_info include_descendants)
216{
217    if (!_gem5_process)
218        return;
219    _gem5_process->resume(include_descendants == SC_INCLUDE_DESCENDANTS);
220}
221
222void
223sc_process_handle::disable(sc_descendent_inclusion_info include_descendants)
224{
225    if (!_gem5_process)
226        return;
227    _gem5_process->disable(include_descendants == SC_INCLUDE_DESCENDANTS);
228}
229
230void
231sc_process_handle::enable(sc_descendent_inclusion_info include_descendants)
232{
233    if (!_gem5_process)
234        return;
235    _gem5_process->enable(include_descendants == SC_INCLUDE_DESCENDANTS);
236}
237
238void
239sc_process_handle::kill(sc_descendent_inclusion_info include_descendants)
240{
241    if (!_gem5_process)
242        return;
243    _gem5_process->kill(include_descendants == SC_INCLUDE_DESCENDANTS);
244}
245
246void
247sc_process_handle::reset(sc_descendent_inclusion_info include_descendants)
248{
249    if (!_gem5_process)
250        return;
251    _gem5_process->reset(include_descendants == SC_INCLUDE_DESCENDANTS);
252}
253
254bool
255sc_process_handle::is_unwinding()
256{
257    if (!_gem5_process) {
258        //TODO This should generate a systemc style warning if the handle is
259        //invalid.
260        return false;
261    } else {
262        return _gem5_process->isUnwinding();
263    }
264}
265
266const sc_event &
267sc_process_handle::reset_event() const
268{
269    static sc_event non_event;
270    return _gem5_process ? _gem5_process->resetEvent() : non_event;
271}
272
273
274void
275sc_process_handle::sync_reset_on(
276        sc_descendent_inclusion_info include_descendants)
277{
278    if (!_gem5_process)
279        return;
280    _gem5_process->syncResetOn(include_descendants == SC_INCLUDE_DESCENDANTS);
281}
282
283void
284sc_process_handle::sync_reset_off(
285        sc_descendent_inclusion_info include_descendants)
286{
287    if (!_gem5_process)
288        return;
289    _gem5_process->syncResetOff(include_descendants == SC_INCLUDE_DESCENDANTS);
290}
291
292
293sc_process_handle
294sc_get_current_process_handle()
295{
296    if (sc_is_running())
297        return sc_process_handle(::sc_gem5::scheduler.current());
298    else
299        return sc_process_handle(::sc_gem5::Process::newest());
300}
301
302bool
303sc_is_unwinding()
304{
305    return sc_get_current_process_handle().is_unwinding();
306}
307
308bool sc_allow_process_control_corners;
309
310} // namespace sc_core
311