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 <sstream>
31#include <vector>
32
33#include "base/logging.hh"
34#include "base/types.hh"
35#include "python/pybind11/pybind.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
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 <sstream>
31#include <vector>
32
33#include "base/logging.hh"
34#include "base/types.hh"
35#include "python/pybind11/pybind.hh"
|
| 36#include "sim/core.hh"
|
36#include "systemc/core/python.hh"
37#include "systemc/ext/core/sc_main.hh"
38#include "systemc/ext/core/sc_time.hh"
39#include "systemc/ext/utils/sc_report_handler.hh"
40
41namespace sc_core
42{
43
44namespace
45{
46
47const char *TimeUnitNames[] = {
48 [SC_FS] = "fs",
49 [SC_PS] = "ps",
50 [SC_NS] = "ns",
51 [SC_US] = "us",
52 [SC_MS] = "ms",
53 [SC_SEC] = "s"
54};
55
56double TimeUnitScale[] = {
57 [SC_FS] = 1.0e-15,
58 [SC_PS] = 1.0e-12,
59 [SC_NS] = 1.0e-9,
60 [SC_US] = 1.0e-6,
61 [SC_MS] = 1.0e-3,
62 [SC_SEC] = 1.0
63};
64
| 37#include "systemc/core/python.hh"
38#include "systemc/ext/core/sc_main.hh"
39#include "systemc/ext/core/sc_time.hh"
40#include "systemc/ext/utils/sc_report_handler.hh"
41
42namespace sc_core
43{
44
45namespace
46{
47
48const char *TimeUnitNames[] = {
49 [SC_FS] = "fs",
50 [SC_PS] = "ps",
51 [SC_NS] = "ns",
52 [SC_US] = "us",
53 [SC_MS] = "ms",
54 [SC_SEC] = "s"
55};
56
57double TimeUnitScale[] = {
58 [SC_FS] = 1.0e-15,
59 [SC_PS] = 1.0e-12,
60 [SC_NS] = 1.0e-9,
61 [SC_US] = 1.0e-6,
62 [SC_MS] = 1.0e-3,
63 [SC_SEC] = 1.0
64};
65
|
| 66Tick TimeUnitFrequency[] = {
67 [SC_FS] = 1ULL * 1000 * 1000 * 1000 * 1000 * 1000,
68 [SC_PS] = 1ULL * 1000 * 1000 * 1000 * 1000,
69 [SC_NS] = 1ULL * 1000 * 1000 * 1000,
70 [SC_US] = 1ULL * 1000 * 1000,
71 [SC_MS] = 1ULL * 1000,
72 [SC_SEC] = 1ULL
73};
74
|
65bool timeFixed = false;
66bool pythonReady = false;
67
68struct SetInfo
69{
70 SetInfo(::sc_core::sc_time *time, double d, ::sc_core::sc_time_unit tu) :
71 time(time), d(d), tu(tu)
72 {}
73
74 ::sc_core::sc_time *time;
75 double d;
76 ::sc_core::sc_time_unit tu;
77};
78std::vector<SetInfo> toSet;
79
80void
81setWork(sc_time *time, double d, ::sc_core::sc_time_unit tu)
82{
| 75bool timeFixed = false;
76bool pythonReady = false;
77
78struct SetInfo
79{
80 SetInfo(::sc_core::sc_time *time, double d, ::sc_core::sc_time_unit tu) :
81 time(time), d(d), tu(tu)
82 {}
83
84 ::sc_core::sc_time *time;
85 double d;
86 ::sc_core::sc_time_unit tu;
87};
88std::vector<SetInfo> toSet;
89
90void
91setWork(sc_time *time, double d, ::sc_core::sc_time_unit tu)
92{
|
83 //XXX Assuming the time resolution is 1ps.
84 double scale = TimeUnitScale[tu] / TimeUnitScale[SC_PS];
| 93 double scale = TimeUnitScale[tu] * SimClock::Float::s;
|
85 // Accellera claims there is a linux bug, and that these next two
86 // lines work around them.
87 volatile double tmp = d * scale + 0.5;
88 *time = sc_time::from_value(static_cast<uint64_t>(tmp));
89}
90
91void
92fixTime()
93{
94 auto ticks = pybind11::module::import("m5.ticks");
95 auto fix_global_frequency = ticks.attr("fixGlobalFrequency");
96 fix_global_frequency();
97
98 for (auto &t: toSet)
99 setWork(t.time, t.d, t.tu);
100 toSet.clear();
101}
102
103void
| 94 // Accellera claims there is a linux bug, and that these next two
95 // lines work around them.
96 volatile double tmp = d * scale + 0.5;
97 *time = sc_time::from_value(static_cast<uint64_t>(tmp));
98}
99
100void
101fixTime()
102{
103 auto ticks = pybind11::module::import("m5.ticks");
104 auto fix_global_frequency = ticks.attr("fixGlobalFrequency");
105 fix_global_frequency();
106
107 for (auto &t: toSet)
108 setWork(t.time, t.d, t.tu);
109 toSet.clear();
110}
111
112void
|
| 113attemptToFixTime()
114{
115 // Only fix time once.
116 if (!timeFixed) {
117 timeFixed = true;
118
119 // If we've run, python is working and we haven't fixed time yet.
120 if (pythonReady)
121 fixTime();
122 }
123}
124
125void
|
104setGlobalFrequency(Tick ticks_per_second)
105{
106 auto ticks = pybind11::module::import("m5.ticks");
107 auto set_global_frequency = ticks.attr("setGlobalFrequency");
108 set_global_frequency(ticks_per_second);
109 fixTime();
110}
111
112void
113set(::sc_core::sc_time *time, double d, ::sc_core::sc_time_unit tu)
114{
| 126setGlobalFrequency(Tick ticks_per_second)
127{
128 auto ticks = pybind11::module::import("m5.ticks");
129 auto set_global_frequency = ticks.attr("setGlobalFrequency");
130 set_global_frequency(ticks_per_second);
131 fixTime();
132}
133
134void
135set(::sc_core::sc_time *time, double d, ::sc_core::sc_time_unit tu)
136{
|
115 // Only fix time once.
116 if (!timeFixed) {
117 timeFixed = true;
118
119 // If we've run, python is working and we haven't fixed time yet.
120 if (pythonReady)
121 fixTime();
122 }
| 137 if (d != 0)
138 attemptToFixTime();
|
123 if (pythonReady) {
124 // Time should be working. Set up this sc_time.
125 setWork(time, d, tu);
126 } else {
127 // Time isn't set up yet. Defer setting up this sc_time.
128 toSet.emplace_back(time, d, tu);
129 }
130}
131
132class TimeSetter : public ::sc_gem5::PythonReadyFunc
133{
134 public:
135 TimeSetter() : ::sc_gem5::PythonReadyFunc() {}
136
137 void
138 run() override
139 {
140 // Record that we've run and python/pybind should be usable.
141 pythonReady = true;
142
143 // If time is already fixed, let python know.
144 if (timeFixed)
145 fixTime();
146 }
147} timeSetter;
148
149double defaultUnit = 1.0e-9;
150
151} // anonymous namespace
152
153sc_time::sc_time() : val(0) {}
154
155sc_time::sc_time(double d, sc_time_unit tu)
156{
157 val = 0;
| 139 if (pythonReady) {
140 // Time should be working. Set up this sc_time.
141 setWork(time, d, tu);
142 } else {
143 // Time isn't set up yet. Defer setting up this sc_time.
144 toSet.emplace_back(time, d, tu);
145 }
146}
147
148class TimeSetter : public ::sc_gem5::PythonReadyFunc
149{
150 public:
151 TimeSetter() : ::sc_gem5::PythonReadyFunc() {}
152
153 void
154 run() override
155 {
156 // Record that we've run and python/pybind should be usable.
157 pythonReady = true;
158
159 // If time is already fixed, let python know.
160 if (timeFixed)
161 fixTime();
162 }
163} timeSetter;
164
165double defaultUnit = 1.0e-9;
166
167} // anonymous namespace
168
169sc_time::sc_time() : val(0) {}
170
171sc_time::sc_time(double d, sc_time_unit tu)
172{
173 val = 0;
|
158 if (d != 0)
159 set(this, d, tu);
| 174 set(this, d, tu);
|
160}
161
162sc_time::sc_time(const sc_time &t)
163{
164 val = t.val;
165}
166
167sc_time::sc_time(double d, bool scale)
168{
| 175}
176
177sc_time::sc_time(const sc_time &t)
178{
179 val = t.val;
180}
181
182sc_time::sc_time(double d, bool scale)
183{
|
169 //XXX Assuming the time resolution is 1ps.
170 if (scale)
171 set(this, d * defaultUnit, SC_SEC);
172 else
173 set(this, d, SC_PS);
| 184 double scaler = scale ? defaultUnit : SimClock::Float::Hz;
185 set(this, d * scaler, SC_SEC);
|
174}
175
176sc_time::sc_time(sc_dt::uint64 v, bool scale)
177{
| 186}
187
188sc_time::sc_time(sc_dt::uint64 v, bool scale)
189{
|
178 //XXX Assuming the time resolution is 1ps.
179 if (scale)
180 set(this, static_cast<double>(v) * defaultUnit, SC_SEC);
181 else
182 set(this, static_cast<double>(v), SC_PS);
| 190 double scaler = scale ? defaultUnit : SimClock::Float::Hz;
191 set(this, static_cast<double>(v) * scaler, SC_SEC);
|
183}
184
185sc_time &
186sc_time::operator = (const sc_time &t)
187{
188 val = t.val;
189 return *this;
190}
191
192sc_dt::uint64
193sc_time::value() const
194{
195 return val;
196}
197
198double
199sc_time::to_double() const
200{
201 return static_cast<double>(val);
202}
203double
204sc_time::to_seconds() const
205{
| 192}
193
194sc_time &
195sc_time::operator = (const sc_time &t)
196{
197 val = t.val;
198 return *this;
199}
200
201sc_dt::uint64
202sc_time::value() const
203{
204 return val;
205}
206
207double
208sc_time::to_double() const
209{
210 return static_cast<double>(val);
211}
212double
213sc_time::to_seconds() const
214{
|
206 double d = to_double();
207 //XXX Assuming the time resolution is 1ps.
208 double scale = TimeUnitScale[SC_PS] / TimeUnitScale[SC_SEC];
209 return d * scale;
| 215 return to_double() * SimClock::Float::Hz;
|
210}
211
212const std::string
213sc_time::to_string() const
214{
215 std::ostringstream ss;
216 print(ss);
217 return ss.str();
218}
219
220bool
221sc_time::operator == (const sc_time &t) const
222{
223 return val == t.val;
224}
225
226bool
227sc_time::operator != (const sc_time &t) const
228{
229 return val != t.val;
230}
231
232bool
233sc_time::operator < (const sc_time &t) const
234{
235 return val < t.val;
236}
237
238bool
239sc_time::operator <= (const sc_time &t) const
240{
241 return val <= t.val;
242}
243
244bool
245sc_time::operator > (const sc_time &t) const
246{
247 return val > t.val;
248}
249
250bool
251sc_time::operator >= (const sc_time &t) const
252{
253 return val >= t.val;
254}
255
256sc_time &
257sc_time::operator += (const sc_time &t)
258{
259 val += t.val;
260 return *this;
261}
262
263sc_time &
264sc_time::operator -= (const sc_time &t)
265{
266 val -= t.val;
267 return *this;
268}
269
270sc_time &
271sc_time::operator *= (double d)
272{
273 val = static_cast<int64_t>(static_cast<double>(val) * d + 0.5);
274 return *this;
275}
276
277sc_time &
278sc_time::operator /= (double d)
279{
280 val = static_cast<int64_t>(static_cast<double>(val) / d + 0.5);
281 return *this;
282}
283
284void
285sc_time::print(std::ostream &os) const
286{
287 if (val == 0) {
288 os << "0 s";
289 } else {
| 216}
217
218const std::string
219sc_time::to_string() const
220{
221 std::ostringstream ss;
222 print(ss);
223 return ss.str();
224}
225
226bool
227sc_time::operator == (const sc_time &t) const
228{
229 return val == t.val;
230}
231
232bool
233sc_time::operator != (const sc_time &t) const
234{
235 return val != t.val;
236}
237
238bool
239sc_time::operator < (const sc_time &t) const
240{
241 return val < t.val;
242}
243
244bool
245sc_time::operator <= (const sc_time &t) const
246{
247 return val <= t.val;
248}
249
250bool
251sc_time::operator > (const sc_time &t) const
252{
253 return val > t.val;
254}
255
256bool
257sc_time::operator >= (const sc_time &t) const
258{
259 return val >= t.val;
260}
261
262sc_time &
263sc_time::operator += (const sc_time &t)
264{
265 val += t.val;
266 return *this;
267}
268
269sc_time &
270sc_time::operator -= (const sc_time &t)
271{
272 val -= t.val;
273 return *this;
274}
275
276sc_time &
277sc_time::operator *= (double d)
278{
279 val = static_cast<int64_t>(static_cast<double>(val) * d + 0.5);
280 return *this;
281}
282
283sc_time &
284sc_time::operator /= (double d)
285{
286 val = static_cast<int64_t>(static_cast<double>(val) / d + 0.5);
287 return *this;
288}
289
290void
291sc_time::print(std::ostream &os) const
292{
293 if (val == 0) {
294 os << "0 s";
295 } else {
|
290 //XXX Assuming the time resolution is 1ps.
291 sc_time_unit tu = SC_PS;
292 uint64_t scaled = val;
| 296 Tick frequency = SimClock::Frequency;
297
298 // Shrink the frequency by scaling down the time period, ie converting
299 // it from cycles per second to cycles per millisecond, etc.
300 sc_time_unit tu = SC_SEC;
301 while (tu > 1 && (frequency % 1000 == 0)) {
302 tu = (sc_time_unit)((int)tu - 1);
303 frequency /= 1000;
304 }
305
306 // Convert the frequency into a period.
307 Tick period;
308 if (frequency > 1) {
309 tu = (sc_time_unit)((int)tu - 1);
310 period = 1000 / frequency;
311 } else {
312 period = frequency;
313 }
314
315 // Scale our integer value by the period.
316 uint64_t scaled = val * period;
317
318 // Shrink the scaled time value by increasing the size of the units
319 // it's measured by, avoiding fractional parts.
|
293 while (tu < SC_SEC && (scaled % 1000) == 0) {
294 tu = (sc_time_unit)((int)tu + 1);
295 scaled /= 1000;
296 }
297
298 os << scaled << ' ' << TimeUnitNames[tu];
299 }
300}
301
302sc_time
303sc_time::from_value(sc_dt::uint64 u)
304{
| 320 while (tu < SC_SEC && (scaled % 1000) == 0) {
321 tu = (sc_time_unit)((int)tu + 1);
322 scaled /= 1000;
323 }
324
325 os << scaled << ' ' << TimeUnitNames[tu];
326 }
327}
328
329sc_time
330sc_time::from_value(sc_dt::uint64 u)
331{
|
| 332 if (u)
333 attemptToFixTime();
|
305 sc_time t;
306 t.val = u;
307 return t;
308}
309
310sc_time
311sc_time::from_seconds(double d)
312{
313 sc_time t;
314 set(&t, d, SC_SEC);
315 return t;
316}
317
318sc_time
319sc_time::from_string(const char *str)
320{
321 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
322 return sc_time();
323}
324
325const sc_time
326operator + (const sc_time &a, const sc_time &b)
327{
328 return sc_time::from_value(a.value() + b.value());
329}
330
331const sc_time
332operator - (const sc_time &a, const sc_time &b)
333{
334 return sc_time::from_value(a.value() - b.value());
335}
336
337const sc_time
338operator * (const sc_time &t, double d)
339{
340 volatile double tmp = static_cast<double>(t.value()) * d + 0.5;
341 return sc_time::from_value(static_cast<int64_t>(tmp));
342}
343
344const sc_time
345operator * (double d, const sc_time &t)
346{
347 volatile double tmp = d * static_cast<double>(t.value()) + 0.5;
348 return sc_time::from_value(static_cast<int64_t>(tmp));
349}
350
351const sc_time
352operator / (const sc_time &t, double d)
353{
354 volatile double tmp = static_cast<double>(t.value()) / d + 0.5;
355 return sc_time::from_value(static_cast<int64_t>(tmp));
356}
357
358double
359operator / (const sc_time &t1, const sc_time &t2)
360{
361 return t1.to_double() / t2.to_double();
362}
363
364std::ostream &
365operator << (std::ostream &os, const sc_time &t)
366{
367 t.print(os);
368 return os;
369}
370
371const sc_time SC_ZERO_TIME;
372
373void
374sc_set_time_resolution(double d, sc_time_unit tu)
375{
376 if (d <= 0.0) {
377 SC_REPORT_ERROR("(E514) set time resolution failed",
378 "value not positive");
379 }
380 double dummy;
381 if (modf(log10(d), &dummy) != 0.0) {
382 SC_REPORT_ERROR("(E514) set time resolution failed",
383 "value not a power of ten");
384 }
385 if (sc_is_running()) {
386 SC_REPORT_ERROR("(E514) set time resolution failed",
387 "simulation running");
388 }
389 static bool specified = false;
390 if (specified) {
391 SC_REPORT_ERROR("(E514) set time resolution failed",
392 "already specified");
393 }
394 // This won't detect the timescale being fixed outside of systemc, but
395 // it's at least some protection.
396 if (timeFixed) {
397 SC_REPORT_ERROR("(E514) set time resolution failed",
398 "sc_time object(s) constructed");
399 }
400
| 334 sc_time t;
335 t.val = u;
336 return t;
337}
338
339sc_time
340sc_time::from_seconds(double d)
341{
342 sc_time t;
343 set(&t, d, SC_SEC);
344 return t;
345}
346
347sc_time
348sc_time::from_string(const char *str)
349{
350 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
351 return sc_time();
352}
353
354const sc_time
355operator + (const sc_time &a, const sc_time &b)
356{
357 return sc_time::from_value(a.value() + b.value());
358}
359
360const sc_time
361operator - (const sc_time &a, const sc_time &b)
362{
363 return sc_time::from_value(a.value() - b.value());
364}
365
366const sc_time
367operator * (const sc_time &t, double d)
368{
369 volatile double tmp = static_cast<double>(t.value()) * d + 0.5;
370 return sc_time::from_value(static_cast<int64_t>(tmp));
371}
372
373const sc_time
374operator * (double d, const sc_time &t)
375{
376 volatile double tmp = d * static_cast<double>(t.value()) + 0.5;
377 return sc_time::from_value(static_cast<int64_t>(tmp));
378}
379
380const sc_time
381operator / (const sc_time &t, double d)
382{
383 volatile double tmp = static_cast<double>(t.value()) / d + 0.5;
384 return sc_time::from_value(static_cast<int64_t>(tmp));
385}
386
387double
388operator / (const sc_time &t1, const sc_time &t2)
389{
390 return t1.to_double() / t2.to_double();
391}
392
393std::ostream &
394operator << (std::ostream &os, const sc_time &t)
395{
396 t.print(os);
397 return os;
398}
399
400const sc_time SC_ZERO_TIME;
401
402void
403sc_set_time_resolution(double d, sc_time_unit tu)
404{
405 if (d <= 0.0) {
406 SC_REPORT_ERROR("(E514) set time resolution failed",
407 "value not positive");
408 }
409 double dummy;
410 if (modf(log10(d), &dummy) != 0.0) {
411 SC_REPORT_ERROR("(E514) set time resolution failed",
412 "value not a power of ten");
413 }
414 if (sc_is_running()) {
415 SC_REPORT_ERROR("(E514) set time resolution failed",
416 "simulation running");
417 }
418 static bool specified = false;
419 if (specified) {
420 SC_REPORT_ERROR("(E514) set time resolution failed",
421 "already specified");
422 }
423 // This won't detect the timescale being fixed outside of systemc, but
424 // it's at least some protection.
425 if (timeFixed) {
426 SC_REPORT_ERROR("(E514) set time resolution failed",
427 "sc_time object(s) constructed");
428 }
429
|
401 // Normalize d to seconds.
402 d *= TimeUnitScale[tu];
403 if (d < TimeUnitScale[SC_FS]) {
| 430 double seconds = d * TimeUnitScale[tu];
431 if (seconds < TimeUnitScale[SC_FS]) {
|
404 SC_REPORT_ERROR("(E514) set time resolution failed",
405 "value smaller than 1 fs");
406 }
| 432 SC_REPORT_ERROR("(E514) set time resolution failed",
433 "value smaller than 1 fs");
434 }
|
407 // Change d from a period to a frequency.
408 d = 1 / d;
409 // Convert to integer ticks.
410 Tick ticks_per_second = static_cast<Tick>(d);
| 435
436 if (seconds > defaultUnit) {
437 SC_REPORT_WARNING(
438 "(W516) default time unit changed to time resolution", "");
439 defaultUnit = seconds;
440 }
441
442 // Get rid of fractional parts of d.
443 while (d < 1.0 && tu > SC_FS) {
444 d *= 1000;
445 tu = (sc_time_unit)(tu - 1);
446 }
447
448 Tick ticks_per_second = TimeUnitFrequency[tu] / static_cast<Tick>(d);
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411 setGlobalFrequency(ticks_per_second);
412 specified = true;
413}
414
415sc_time
416sc_get_time_resolution()
417{
418 return sc_time::from_value(1);
419}
420
421const sc_time &
422sc_max_time()
423{
424 static const sc_time MaxScTime = sc_time::from_value(MaxTick);
425 return MaxScTime;
426}
427
428void
429sc_set_default_time_unit(double d, sc_time_unit tu)
430{
431 if (d < 0.0) {
432 SC_REPORT_ERROR("(E515) set default time unit failed",
433 "value not positive");
434 }
435 double dummy;
436 if (modf(log10(d), &dummy) != 0.0) {
437 SC_REPORT_ERROR("(E515) set default time unit failed",
438 "value not a power of ten");
439 }
440 if (sc_is_running()) {
441 SC_REPORT_ERROR("(E515) set default time unit failed",
442 "simulation running");
443 }
444 static bool specified = false;
445 if (specified) {
446 SC_REPORT_ERROR("(E515) set default time unit failed",
447 "already specified");
448 }
449 // This won't detect the timescale being fixed outside of systemc, but
450 // it's at least some protection.
451 if (timeFixed) {
452 SC_REPORT_ERROR("(E515) set default time unit failed",
453 "sc_time object(s) constructed");
454 }
455
456 // Normalize d to seconds.
457 defaultUnit = d * TimeUnitScale[tu];
458 specified = true;
459}
460
461sc_time
462sc_get_default_time_unit()
463{
464 return sc_time(defaultUnit, SC_SEC);
465}
466
467sc_time_tuple::sc_time_tuple(const sc_time &)
468{
469 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
470}
471
472bool
473sc_time_tuple::has_value() const
474{
475 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
476 return false;
477}
478
479sc_dt::uint64
480sc_time_tuple::value() const
481{
482 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
483 return 0;
484}
485
486const char *
487sc_time_tuple::unit_symbol() const
488{
489 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
490 return "";
491}
492
493double
494sc_time_tuple::to_double() const
495{
496 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
497 return 0.0;
498}
499
500std::string
501sc_time_tuple::to_string() const
502{
503 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
504 return "";
505}
506
507} // namespace sc_core
| 449 setGlobalFrequency(ticks_per_second);
450 specified = true;
451}
452
453sc_time
454sc_get_time_resolution()
455{
456 return sc_time::from_value(1);
457}
458
459const sc_time &
460sc_max_time()
461{
462 static const sc_time MaxScTime = sc_time::from_value(MaxTick);
463 return MaxScTime;
464}
465
466void
467sc_set_default_time_unit(double d, sc_time_unit tu)
468{
469 if (d < 0.0) {
470 SC_REPORT_ERROR("(E515) set default time unit failed",
471 "value not positive");
472 }
473 double dummy;
474 if (modf(log10(d), &dummy) != 0.0) {
475 SC_REPORT_ERROR("(E515) set default time unit failed",
476 "value not a power of ten");
477 }
478 if (sc_is_running()) {
479 SC_REPORT_ERROR("(E515) set default time unit failed",
480 "simulation running");
481 }
482 static bool specified = false;
483 if (specified) {
484 SC_REPORT_ERROR("(E515) set default time unit failed",
485 "already specified");
486 }
487 // This won't detect the timescale being fixed outside of systemc, but
488 // it's at least some protection.
489 if (timeFixed) {
490 SC_REPORT_ERROR("(E515) set default time unit failed",
491 "sc_time object(s) constructed");
492 }
493
494 // Normalize d to seconds.
495 defaultUnit = d * TimeUnitScale[tu];
496 specified = true;
497}
498
499sc_time
500sc_get_default_time_unit()
501{
502 return sc_time(defaultUnit, SC_SEC);
503}
504
505sc_time_tuple::sc_time_tuple(const sc_time &)
506{
507 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
508}
509
510bool
511sc_time_tuple::has_value() const
512{
513 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
514 return false;
515}
516
517sc_dt::uint64
518sc_time_tuple::value() const
519{
520 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
521 return 0;
522}
523
524const char *
525sc_time_tuple::unit_symbol() const
526{
527 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
528 return "";
529}
530
531double
532sc_time_tuple::to_double() const
533{
534 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
535 return 0.0;
536}
537
538std::string
539sc_time_tuple::to_string() const
540{
541 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
542 return "";
543}
544
545} // namespace sc_core
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