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/event.hh"
31
32#include <algorithm>
33#include <cstring>
34#include <utility>
35
36#include "base/logging.hh"
37#include "sim/core.hh"
38#include "systemc/core/module.hh"
39#include "systemc/core/scheduler.hh"
40#include "systemc/ext/core/sc_main.hh"
41#include "systemc/ext/core/sc_module.hh"
42
43namespace sc_gem5
44{
45
46Event::Event(sc_core::sc_event *_sc_event) : Event(_sc_event, nullptr) {}
47
48Event::Event(sc_core::sc_event *_sc_event, const char *_basename_cstr) :
49 _sc_event(_sc_event), _basename(_basename_cstr ? _basename_cstr : ""),
50 delayedNotify([this]() { this->notify(); }), _triggeredStamp(~0ULL)
51{
52 if (_basename == "" && ::sc_core::sc_is_running())
53 _basename = ::sc_core::sc_gen_unique_name("event");
54
55 parent = pickParentObj();
56
57 std::string original_name = _basename;
58 _basename = pickUniqueName(parent, _basename);
59
60 if (parent) {
61 Object *obj = Object::getFromScObject(parent);
62 obj->addChildEvent(_sc_event);
63 } else {
64 topLevelEvents.emplace(topLevelEvents.end(), _sc_event);
65 }
66
67 std::string path = parent ? (std::string(parent->name()) + ".") : "";
68
69 if (original_name != "" && _basename != original_name) {
70 std::string message = path + original_name +
71 ". Latter declaration will be renamed to " +
72 path + _basename;
73 SC_REPORT_WARNING("(W505) object already exists", message.c_str());
74 }
75
76 _name = path + _basename;
77
78 allEvents.emplace(allEvents.end(), _sc_event);
79
80 // Determine if we're in the hierarchy (created once initialization starts
81 // means no).
82}
83
84Event::~Event()
85{
86 if (parent) {
87 Object *obj = Object::getFromScObject(parent);
88 obj->delChildEvent(_sc_event);
89 } else {
90 EventsIt it = find(topLevelEvents.begin(), topLevelEvents.end(),
91 _sc_event);
92 assert(it != topLevelEvents.end());
93 std::swap(*it, topLevelEvents.back());
94 topLevelEvents.pop_back();
95 }
96
97 EventsIt it = findEvent(_name);
98 std::swap(*it, allEvents.back());
99 allEvents.pop_back();
100
101 if (delayedNotify.scheduled())
102 scheduler.deschedule(&delayedNotify);
103}
104
105const std::string &
106Event::name() const
107{
108 return _name;
109}
110
111const std::string &
112Event::basename() const
113{
114 return _basename;
115}
116
117bool
118Event::inHierarchy() const
119{
120 return _name.length() != 0;
121}
122
123sc_core::sc_object *
124Event::getParentObject() const
125{
126 return parent;
127}
128
129void
130Event::notify(StaticSensitivities &senses)
131{
132 for (auto s: senses)
133 s->notify(this);
134}
135
136void
137Event::notify(DynamicSensitivities &senses)
138{
139 int size = senses.size();
140 int pos = 0;
141 while (pos < size) {
142 if (senses[pos]->notify(this))
143 senses[pos] = senses[--size];
144 else
145 pos++;
146 }
147 senses.resize(size);
148}
149
150void
151Event::notify()
152{
153 if (scheduler.inUpdate()) {
154 SC_REPORT_ERROR("(E521) immediate notification is not allowed "
155 "during update phase or elaboration", "");
156 }
157
158 // An immediate notification overrides any pending delayed notification.
159 if (delayedNotify.scheduled())
160 scheduler.deschedule(&delayedNotify);
161
162 _triggeredStamp = scheduler.changeStamp();
163 notify(staticSenseMethod);
164 notify(dynamicSenseMethod);
165 notify(staticSenseThread);
166 notify(dynamicSenseThread);
167}
168
169void
170Event::notify(const sc_core::sc_time &t)
171{
172 if (delayedNotify.scheduled()) {
173 if (scheduler.delayed(t) >= delayedNotify.when())
174 return;
175
176 scheduler.deschedule(&delayedNotify);
177 }
178 scheduler.schedule(&delayedNotify, t);
179}
180
181void
182Event::cancel()
183{
184 if (delayedNotify.scheduled())
185 scheduler.deschedule(&delayedNotify);
186}
187
188bool
189Event::triggered() const
190{
191 return _triggeredStamp == scheduler.changeStamp();
192}
193
| 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/event.hh"
31
32#include <algorithm>
33#include <cstring>
34#include <utility>
35
36#include "base/logging.hh"
37#include "sim/core.hh"
38#include "systemc/core/module.hh"
39#include "systemc/core/scheduler.hh"
40#include "systemc/ext/core/sc_main.hh"
41#include "systemc/ext/core/sc_module.hh"
42
43namespace sc_gem5
44{
45
46Event::Event(sc_core::sc_event *_sc_event) : Event(_sc_event, nullptr) {}
47
48Event::Event(sc_core::sc_event *_sc_event, const char *_basename_cstr) :
49 _sc_event(_sc_event), _basename(_basename_cstr ? _basename_cstr : ""),
50 delayedNotify([this]() { this->notify(); }), _triggeredStamp(~0ULL)
51{
52 if (_basename == "" && ::sc_core::sc_is_running())
53 _basename = ::sc_core::sc_gen_unique_name("event");
54
55 parent = pickParentObj();
56
57 std::string original_name = _basename;
58 _basename = pickUniqueName(parent, _basename);
59
60 if (parent) {
61 Object *obj = Object::getFromScObject(parent);
62 obj->addChildEvent(_sc_event);
63 } else {
64 topLevelEvents.emplace(topLevelEvents.end(), _sc_event);
65 }
66
67 std::string path = parent ? (std::string(parent->name()) + ".") : "";
68
69 if (original_name != "" && _basename != original_name) {
70 std::string message = path + original_name +
71 ". Latter declaration will be renamed to " +
72 path + _basename;
73 SC_REPORT_WARNING("(W505) object already exists", message.c_str());
74 }
75
76 _name = path + _basename;
77
78 allEvents.emplace(allEvents.end(), _sc_event);
79
80 // Determine if we're in the hierarchy (created once initialization starts
81 // means no).
82}
83
84Event::~Event()
85{
86 if (parent) {
87 Object *obj = Object::getFromScObject(parent);
88 obj->delChildEvent(_sc_event);
89 } else {
90 EventsIt it = find(topLevelEvents.begin(), topLevelEvents.end(),
91 _sc_event);
92 assert(it != topLevelEvents.end());
93 std::swap(*it, topLevelEvents.back());
94 topLevelEvents.pop_back();
95 }
96
97 EventsIt it = findEvent(_name);
98 std::swap(*it, allEvents.back());
99 allEvents.pop_back();
100
101 if (delayedNotify.scheduled())
102 scheduler.deschedule(&delayedNotify);
103}
104
105const std::string &
106Event::name() const
107{
108 return _name;
109}
110
111const std::string &
112Event::basename() const
113{
114 return _basename;
115}
116
117bool
118Event::inHierarchy() const
119{
120 return _name.length() != 0;
121}
122
123sc_core::sc_object *
124Event::getParentObject() const
125{
126 return parent;
127}
128
129void
130Event::notify(StaticSensitivities &senses)
131{
132 for (auto s: senses)
133 s->notify(this);
134}
135
136void
137Event::notify(DynamicSensitivities &senses)
138{
139 int size = senses.size();
140 int pos = 0;
141 while (pos < size) {
142 if (senses[pos]->notify(this))
143 senses[pos] = senses[--size];
144 else
145 pos++;
146 }
147 senses.resize(size);
148}
149
150void
151Event::notify()
152{
153 if (scheduler.inUpdate()) {
154 SC_REPORT_ERROR("(E521) immediate notification is not allowed "
155 "during update phase or elaboration", "");
156 }
157
158 // An immediate notification overrides any pending delayed notification.
159 if (delayedNotify.scheduled())
160 scheduler.deschedule(&delayedNotify);
161
162 _triggeredStamp = scheduler.changeStamp();
163 notify(staticSenseMethod);
164 notify(dynamicSenseMethod);
165 notify(staticSenseThread);
166 notify(dynamicSenseThread);
167}
168
169void
170Event::notify(const sc_core::sc_time &t)
171{
172 if (delayedNotify.scheduled()) {
173 if (scheduler.delayed(t) >= delayedNotify.when())
174 return;
175
176 scheduler.deschedule(&delayedNotify);
177 }
178 scheduler.schedule(&delayedNotify, t);
179}
180
181void
182Event::cancel()
183{
184 if (delayedNotify.scheduled())
185 scheduler.deschedule(&delayedNotify);
186}
187
188bool
189Event::triggered() const
190{
191 return _triggeredStamp == scheduler.changeStamp();
192}
193
|