sensitivity.cc (13206:c944ef4abb48) sensitivity.cc (13207:034ca389a810)
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

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25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * Authors: Gabe Black
28 */
29
30#include "systemc/core/sensitivity.hh"
31
32#include "systemc/core/event.hh"
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

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25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * Authors: Gabe Black
28 */
29
30#include "systemc/core/sensitivity.hh"
31
32#include "systemc/core/event.hh"
33#include "systemc/core/port.hh"
33#include "systemc/core/scheduler.hh"
34#include "systemc/ext/core/sc_export.hh"
35#include "systemc/ext/core/sc_interface.hh"
36#include "systemc/ext/core/sc_port.hh"
37
38namespace sc_gem5
39{
40
34#include "systemc/core/scheduler.hh"
35#include "systemc/ext/core/sc_export.hh"
36#include "systemc/ext/core/sc_interface.hh"
37#include "systemc/ext/core/sc_port.hh"
38
39namespace sc_gem5
40{
41
42/*
43 * Common sensitivity interface.
44 */
45
41void
42Sensitivity::satisfy()
43{
44 process->satisfySensitivity(this);
45}
46
47bool
48Sensitivity::notify(Event *e)
49{
50 if (process->disabled())
51 return false;
52 return notifyWork(e);
53}
54
55
46void
47Sensitivity::satisfy()
48{
49 process->satisfySensitivity(this);
50}
51
52bool
53Sensitivity::notify(Event *e)
54{
55 if (process->disabled())
56 return false;
57 return notifyWork(e);
58}
59
60
61/*
62 * Dynamic vs. static sensitivity.
63 */
64
56void
57DynamicSensitivity::addToEvent(const ::sc_core::sc_event *e)
58{
59 Event::getFromScEvent(e)->addSensitivity(this);
60}
61
62void
63DynamicSensitivity::delFromEvent(const ::sc_core::sc_event *e)

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72}
73
74void
75StaticSensitivity::delFromEvent(const ::sc_core::sc_event *e)
76{
77 Event::getFromScEvent(e)->delSensitivity(this);
78}
79
65void
66DynamicSensitivity::addToEvent(const ::sc_core::sc_event *e)
67{
68 Event::getFromScEvent(e)->addSensitivity(this);
69}
70
71void
72DynamicSensitivity::delFromEvent(const ::sc_core::sc_event *e)

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81}
82
83void
84StaticSensitivity::delFromEvent(const ::sc_core::sc_event *e)
85{
86 Event::getFromScEvent(e)->delSensitivity(this);
87}
88
89
90/*
91 * Static sensitivities.
92 */
93
80void
94void
81StaticSensitivityInterface::finalize()
95newStaticSensitivityEvent(Process *p, const sc_core::sc_event *e)
82{
96{
83 event = &interface->default_event();
84 SensitivityEvent::finalize();
97 auto s = new StaticSensitivityEvent(p, e);
98 s->addToEvent(s->event);
99 p->addStatic(s);
85}
86
87void
100}
101
102void
88StaticSensitivityPort::finalize()
103newStaticSensitivityInterface(Process *p, const sc_core::sc_interface *i)
89{
104{
90 for (int i = 0; i < port->size(); i++) {
91 const ::sc_core::sc_event *event =
92 &port->_gem5Interface(i)->default_event();
93 events.insert(event);
94 addToEvent(event);
95 }
105 auto s = new StaticSensitivityInterface(p, i);
106 s->addToEvent(s->event);
107 p->addStatic(s);
96}
97
98void
108}
109
110void
99StaticSensitivityExport::finalize()
111newStaticSensitivityPort(Process *p, const sc_core::sc_port_base *pb)
100{
112{
101 event = &exp->get_interface()->default_event();
102 SensitivityEvent::finalize();
113 auto s = new StaticSensitivityPort(p);
114 Port *port = Port::fromPort(pb);
115 port->sensitive(s);
116 p->addStatic(s);
103}
104
105void
117}
118
119void
106StaticSensitivityFinder::finalize()
120newStaticSensitivityExport(Process *p, const sc_core::sc_export_base *exp)
107{
121{
108 const ::sc_core::sc_port_base *port = finder->port();
109 int size = port->size();
110 for (int i = 0; i < size; i++) {
111 ::sc_core::sc_interface *interface = port->_gem5Interface(i);
112 const ::sc_core::sc_event *event = &finder->find_event(interface);
113 events.insert(event);
114 addToEvent(event);
115 }
122 auto s = new StaticSensitivityExport(p, exp);
123 s->addToEvent(s->event);
124 p->addStatic(s);
116}
117
125}
126
118bool
119DynamicSensitivityEventOrList::notifyWork(Event *e)
127void
128newStaticSensitivityFinder(Process *p, const sc_core::sc_event_finder *f)
120{
129{
121 events.erase(e->sc_event());
130 auto s = new StaticSensitivityFinder(p, f);
131 Port *port = Port::fromPort(f->port());
132 port->sensitive(s);
133 p->addStatic(s);
134}
122
135
123 // All the other events need this deleted from their lists since this
124 // sensitivity has been satisfied without them triggering.
125 for (auto le: events)
126 delFromEvent(le);
127
136
128 satisfy();
129 return true;
130}
137StaticSensitivityInterface::StaticSensitivityInterface(
138 Process *p, const sc_core::sc_interface *i) :
139 Sensitivity(p), StaticSensitivity(p),
140 SensitivityEvent(p, &i->default_event())
141{}
131
142
132DynamicSensitivityEventOrList::DynamicSensitivityEventOrList(
133 Process *p, const sc_core::sc_event_or_list *eol) :
134 Sensitivity(p), DynamicSensitivity(p), events(eol->events)
143StaticSensitivityExport::StaticSensitivityExport(
144 Process *p, const sc_core::sc_export_base *exp) :
145 Sensitivity(p), StaticSensitivity(p),
146 SensitivityEvent(p, &exp->get_interface()->default_event())
135{}
136
147{}
148
149const ::sc_core::sc_event &
150StaticSensitivityFinder::find(::sc_core::sc_interface *i)
151{
152 return finder->find_event(i);
153}
154
155
156/*
157 * Dynamic sensitivities.
158 */
159
137void
160void
138DynamicSensitivityEventOrList::finalize()
161newDynamicSensitivityEvent(Process *p, const sc_core::sc_event *e)
139{
162{
140 for (auto e: events)
141 addToEvent(e);
163 auto s = new DynamicSensitivityEvent(p, e);
164 s->addToEvent(s->event);
165 p->setDynamic(s);
142}
143
144void
166}
167
168void
145DynamicSensitivityEventOrList::clear()
169newDynamicSensitivityEventOrList(
170 Process *p, const sc_core::sc_event_or_list *eol)
146{
171{
147 for (auto e: events)
148 delFromEvent(e);
172 auto s = new DynamicSensitivityEventOrList(p, eol);
173 for (auto event: s->events)
174 s->addToEvent(event);
175 p->setDynamic(s);
149}
150
176}
177
178void newDynamicSensitivityEventAndList(
179 Process *p, const sc_core::sc_event_and_list *eal)
180{
181 auto s = new DynamicSensitivityEventAndList(p, eal);
182 for (auto event: s->events)
183 s->addToEvent(event);
184 p->setDynamic(s);
185}
186
187
188DynamicSensitivityEventOrList::DynamicSensitivityEventOrList(
189 Process *p, const sc_core::sc_event_or_list *eol) :
190 Sensitivity(p), DynamicSensitivity(p), SensitivityEvents(p, eol->events)
191{}
192
151bool
193bool
152DynamicSensitivityEventAndList::notifyWork(Event *e)
194DynamicSensitivityEventOrList::notifyWork(Event *e)
153{
154 events.erase(e->sc_event());
155
195{
196 events.erase(e->sc_event());
197
156 // This sensitivity is satisfied if all events have triggered.
157 if (events.empty())
158 satisfy();
198 // All the other events need this deleted from their lists since this
199 // sensitivity has been satisfied without them triggering.
200 for (auto le: events)
201 delFromEvent(le);
159
202
203 satisfy();
160 return true;
161}
162
163DynamicSensitivityEventAndList::DynamicSensitivityEventAndList(
164 Process *p, const sc_core::sc_event_and_list *eal) :
204 return true;
205}
206
207DynamicSensitivityEventAndList::DynamicSensitivityEventAndList(
208 Process *p, const sc_core::sc_event_and_list *eal) :
165 Sensitivity(p), DynamicSensitivity(p), events(eal->events)
209 Sensitivity(p), DynamicSensitivity(p), SensitivityEvents(p, eal->events)
166{}
167
210{}
211
168void
169DynamicSensitivityEventAndList::finalize()
212bool
213DynamicSensitivityEventAndList::notifyWork(Event *e)
170{
214{
171 for (auto e: events)
172 addToEvent(e);
173}
215 events.erase(e->sc_event());
174
216
175void
176DynamicSensitivityEventAndList::clear()
177{
178 for (auto e: events)
179 delFromEvent(e);
217 // This sensitivity is satisfied if all events have triggered.
218 if (events.empty())
219 satisfy();
220
221 return true;
180}
181
182} // namespace sc_gem5
222}
223
224} // namespace sc_gem5