1/*
2 * Copyright (c) 2000-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Steve Raasch
29 * Nathan Binkert
30 * Steve Reinhardt
31 */
32
33///
34/// @file sim/main.cc
35///
36#include <Python.h> // must be before system headers... see Python docs
37
38#include <sys/types.h>
39#include <sys/stat.h>
40#include <errno.h>
41#include <libgen.h>
42#include <stdlib.h>
43#include <signal.h>
44#include <getopt.h>
45
46#include <list>
47#include <string>
48#include <vector>
49
50#include "base/callback.hh"
51#include "base/inifile.hh"
52#include "base/misc.hh"
53#include "base/output.hh"
54#include "base/pollevent.hh"
55#include "base/statistics.hh"
56#include "base/str.hh"
57#include "base/time.hh"
58#include "config/pythonhome.hh"
59#include "cpu/base.hh"
60#include "cpu/smt.hh"
61#include "mem/mem_object.hh"
62#include "mem/port.hh"
63#include "sim/async.hh"
64#include "sim/builder.hh"
65#include "sim/host.hh"
66#include "sim/serialize.hh"
67#include "sim/sim_events.hh"
68#include "sim/sim_exit.hh"
69#include "sim/sim_object.hh"
70#include "sim/system.hh"
71#include "sim/stat_control.hh"
72#include "sim/stats.hh"
73#include "sim/root.hh"
74
75using namespace std;
76
77// See async.h.
78volatile bool async_event = false;
79volatile bool async_dump = false;
80volatile bool async_dumpreset = false;
81volatile bool async_exit = false;
82volatile bool async_io = false;
83volatile bool async_alarm = false;
84
85/// Stats signal handler.
86void
87dumpStatsHandler(int sigtype)
88{
89 async_event = true;
90 async_dump = true;
91}
92
93void
94dumprstStatsHandler(int sigtype)
95{
96 async_event = true;
97 async_dumpreset = true;
98}
99
100/// Exit signal handler.
101void
102exitNowHandler(int sigtype)
103{
104 async_event = true;
105 async_exit = true;
106}
107
108/// Abort signal handler.
109void
110abortHandler(int sigtype)
111{
112 cerr << "Program aborted at cycle " << curTick << endl;
113
114#if TRACING_ON
115 // dump trace buffer, if there is one
116 Trace::theLog.dump(cerr);
117#endif
118}
119
| 1/*
2 * Copyright (c) 2000-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Steve Raasch
29 * Nathan Binkert
30 * Steve Reinhardt
31 */
32
33///
34/// @file sim/main.cc
35///
36#include <Python.h> // must be before system headers... see Python docs
37
38#include <sys/types.h>
39#include <sys/stat.h>
40#include <errno.h>
41#include <libgen.h>
42#include <stdlib.h>
43#include <signal.h>
44#include <getopt.h>
45
46#include <list>
47#include <string>
48#include <vector>
49
50#include "base/callback.hh"
51#include "base/inifile.hh"
52#include "base/misc.hh"
53#include "base/output.hh"
54#include "base/pollevent.hh"
55#include "base/statistics.hh"
56#include "base/str.hh"
57#include "base/time.hh"
58#include "config/pythonhome.hh"
59#include "cpu/base.hh"
60#include "cpu/smt.hh"
61#include "mem/mem_object.hh"
62#include "mem/port.hh"
63#include "sim/async.hh"
64#include "sim/builder.hh"
65#include "sim/host.hh"
66#include "sim/serialize.hh"
67#include "sim/sim_events.hh"
68#include "sim/sim_exit.hh"
69#include "sim/sim_object.hh"
70#include "sim/system.hh"
71#include "sim/stat_control.hh"
72#include "sim/stats.hh"
73#include "sim/root.hh"
74
75using namespace std;
76
77// See async.h.
78volatile bool async_event = false;
79volatile bool async_dump = false;
80volatile bool async_dumpreset = false;
81volatile bool async_exit = false;
82volatile bool async_io = false;
83volatile bool async_alarm = false;
84
85/// Stats signal handler.
86void
87dumpStatsHandler(int sigtype)
88{
89 async_event = true;
90 async_dump = true;
91}
92
93void
94dumprstStatsHandler(int sigtype)
95{
96 async_event = true;
97 async_dumpreset = true;
98}
99
100/// Exit signal handler.
101void
102exitNowHandler(int sigtype)
103{
104 async_event = true;
105 async_exit = true;
106}
107
108/// Abort signal handler.
109void
110abortHandler(int sigtype)
111{
112 cerr << "Program aborted at cycle " << curTick << endl;
113
114#if TRACING_ON
115 // dump trace buffer, if there is one
116 Trace::theLog.dump(cerr);
117#endif
118}
119
|
120extern "C" { void init_cc_main(); }
| 120extern "C" {
121void init_main();
122}
|
121
122int
123main(int argc, char **argv)
124{
125 signal(SIGFPE, SIG_IGN); // may occur on misspeculated paths
126 signal(SIGTRAP, SIG_IGN);
127 signal(SIGUSR1, dumpStatsHandler); // dump intermediate stats
128 signal(SIGUSR2, dumprstStatsHandler); // dump and reset stats
129 signal(SIGINT, exitNowHandler); // dump final stats and exit
130 signal(SIGABRT, abortHandler);
131
132 Py_SetProgramName(argv[0]);
133
134 // default path to m5 python code is the currently executing
135 // file... Python ZipImporter will find embedded zip archive.
136 // The M5_ARCHIVE environment variable can be used to override this.
137 char *m5_archive = getenv("M5_ARCHIVE");
138 string pythonpath = m5_archive ? m5_archive : argv[0];
139
140 char *oldpath = getenv("PYTHONPATH");
141 if (oldpath != NULL) {
142 pythonpath += ":";
143 pythonpath += oldpath;
144 }
145
146 if (setenv("PYTHONPATH", pythonpath.c_str(), true) == -1)
147 fatal("setenv: %s\n", strerror(errno));
148
149 char *python_home = getenv("PYTHONHOME");
150 if (!python_home)
151 python_home = PYTHONHOME;
152 Py_SetPythonHome(python_home);
153
154 // initialize embedded Python interpreter
155 Py_Initialize();
156 PySys_SetArgv(argc, argv);
157
| 123
124int
125main(int argc, char **argv)
126{
127 signal(SIGFPE, SIG_IGN); // may occur on misspeculated paths
128 signal(SIGTRAP, SIG_IGN);
129 signal(SIGUSR1, dumpStatsHandler); // dump intermediate stats
130 signal(SIGUSR2, dumprstStatsHandler); // dump and reset stats
131 signal(SIGINT, exitNowHandler); // dump final stats and exit
132 signal(SIGABRT, abortHandler);
133
134 Py_SetProgramName(argv[0]);
135
136 // default path to m5 python code is the currently executing
137 // file... Python ZipImporter will find embedded zip archive.
138 // The M5_ARCHIVE environment variable can be used to override this.
139 char *m5_archive = getenv("M5_ARCHIVE");
140 string pythonpath = m5_archive ? m5_archive : argv[0];
141
142 char *oldpath = getenv("PYTHONPATH");
143 if (oldpath != NULL) {
144 pythonpath += ":";
145 pythonpath += oldpath;
146 }
147
148 if (setenv("PYTHONPATH", pythonpath.c_str(), true) == -1)
149 fatal("setenv: %s\n", strerror(errno));
150
151 char *python_home = getenv("PYTHONHOME");
152 if (!python_home)
153 python_home = PYTHONHOME;
154 Py_SetPythonHome(python_home);
155
156 // initialize embedded Python interpreter
157 Py_Initialize();
158 PySys_SetArgv(argc, argv);
159
|
158 // initialize SWIG 'cc_main' module
159 init_cc_main();
| 160 // initialize SWIG 'm5.internal.main' module
161 init_main();
|
160
161 PyRun_SimpleString("import m5.main");
162 PyRun_SimpleString("m5.main.main()");
163
164 // clean up Python intepreter.
165 Py_Finalize();
166}
167
168
169void
170setOutputDir(const string &dir)
171{
172 simout.setDirectory(dir);
173}
174
175
176IniFile inifile;
177
178SimObject *
179createSimObject(const string &name)
180{
181 return SimObjectClass::createObject(inifile, name);
182}
183
184
185/**
186 * Pointer to the Python function that maps names to SimObjects.
187 */
188PyObject *resolveFunc = NULL;
189
190/**
191 * Convert a pointer to the Python object that SWIG wraps around a C++
192 * SimObject pointer back to the actual C++ pointer. See main.i.
193 */
194extern "C" SimObject *convertSwigSimObjectPtr(PyObject *);
195
196
197SimObject *
198resolveSimObject(const string &name)
199{
200 PyObject *pyPtr = PyEval_CallFunction(resolveFunc, "(s)", name.c_str());
201 if (pyPtr == NULL) {
202 PyErr_Print();
203 panic("resolveSimObject: failure on call to Python for %s", name);
204 }
205
206 SimObject *simObj = convertSwigSimObjectPtr(pyPtr);
207 if (simObj == NULL)
208 panic("resolveSimObject: failure on pointer conversion for %s", name);
209
210 return simObj;
211}
212
213
214/**
215 * Load config.ini into C++ database. Exported to Python via SWIG;
216 * invoked from m5.instantiate().
217 */
218void
219loadIniFile(PyObject *_resolveFunc)
220{
221 resolveFunc = _resolveFunc;
222 configStream = simout.find("config.out");
223
224 // The configuration database is now complete; start processing it.
225 inifile.load(simout.resolve("config.ini"));
226
227 // Initialize statistics database
228 Stats::InitSimStats();
229}
230
231
232/**
233 * Look up a MemObject port. Helper function for connectPorts().
234 */
235Port *
236lookupPort(SimObject *so, const std::string &name, int i)
237{
238 MemObject *mo = dynamic_cast<MemObject *>(so);
239 if (mo == NULL) {
240 warn("error casting SimObject %s to MemObject", so->name());
241 return NULL;
242 }
243
244 Port *p = mo->getPort(name, i);
245 if (p == NULL)
246 warn("error looking up port %s on object %s", name, so->name());
247 return p;
248}
249
250
251/**
252 * Connect the described MemObject ports. Called from Python via SWIG.
253 */
254int
255connectPorts(SimObject *o1, const std::string &name1, int i1,
256 SimObject *o2, const std::string &name2, int i2)
257{
258 Port *p1 = lookupPort(o1, name1, i1);
259 Port *p2 = lookupPort(o2, name2, i2);
260
261 if (p1 == NULL || p2 == NULL) {
262 warn("connectPorts: port lookup error");
263 return 0;
264 }
265
266 p1->setPeer(p2);
267 p2->setPeer(p1);
268
269 return 1;
270}
271
272/**
273 * Do final initialization steps after object construction but before
274 * start of simulation.
275 */
276void
277finalInit()
278{
279 // Parse and check all non-config-hierarchy parameters.
280 ParamContext::parseAllContexts(inifile);
281 ParamContext::checkAllContexts();
282
283 // Echo all parameter settings to stats file as well.
284 ParamContext::showAllContexts(*configStream);
285
286 // Do a second pass to finish initializing the sim objects
287 SimObject::initAll();
288
289 // Restore checkpointed state, if any.
290#if 0
291 configHierarchy.unserializeSimObjects();
292#endif
293
294 SimObject::regAllStats();
295
296 // Check to make sure that the stats package is properly initialized
297 Stats::check();
298
299 // Reset to put the stats in a consistent state.
300 Stats::reset();
301
302 SimStartup();
303}
304
305
306/** Simulate for num_cycles additional cycles. If num_cycles is -1
307 * (the default), do not limit simulation; some other event must
308 * terminate the loop. Exported to Python via SWIG.
309 * @return The SimLoopExitEvent that caused the loop to exit.
310 */
311SimLoopExitEvent *
312simulate(Tick num_cycles = MaxTick)
313{
314 warn("Entering event queue @ %d. Starting simulation...\n", curTick);
315
316 if (num_cycles < 0)
317 fatal("simulate: num_cycles must be >= 0 (was %d)\n", num_cycles);
318 else if (curTick + num_cycles < 0) //Overflow
319 num_cycles = MaxTick;
320 else
321 num_cycles = curTick + num_cycles;
322
323 Event *limit_event = schedExitSimLoop("simulate() limit reached",
324 num_cycles);
325
326 while (1) {
327 // there should always be at least one event (the SimLoopExitEvent
328 // we just scheduled) in the queue
329 assert(!mainEventQueue.empty());
330 assert(curTick <= mainEventQueue.nextTick() &&
331 "event scheduled in the past");
332
333 // forward current cycle to the time of the first event on the
334 // queue
335 curTick = mainEventQueue.nextTick();
336 Event *exit_event = mainEventQueue.serviceOne();
337 if (exit_event != NULL) {
338 // hit some kind of exit event; return to Python
339 // event must be subclass of SimLoopExitEvent...
340 SimLoopExitEvent *se_event = dynamic_cast<SimLoopExitEvent *>(exit_event);
341 if (se_event == NULL)
342 panic("Bogus exit event class!");
343
344 // if we didn't hit limit_event, delete it
345 if (se_event != limit_event) {
346 assert(limit_event->scheduled());
347 limit_event->deschedule();
348 delete limit_event;
349 }
350
351 return se_event;
352 }
353
354 if (async_event) {
355 async_event = false;
356 if (async_dump) {
357 async_dump = false;
358
359 using namespace Stats;
360 SetupEvent(Dump, curTick);
361 }
362
363 if (async_dumpreset) {
364 async_dumpreset = false;
365
366 using namespace Stats;
367 SetupEvent(Dump | Reset, curTick);
368 }
369
370 if (async_exit) {
371 async_exit = false;
372 exitSimLoop("user interrupt received");
373 }
374
375 if (async_io || async_alarm) {
376 async_io = false;
377 async_alarm = false;
378 pollQueue.service();
379 }
380 }
381 }
382
383 // not reached... only exit is return on SimLoopExitEvent
384}
385
386Event *
387createCountedDrain()
388{
389 return new CountedDrainEvent();
390}
391
392void
393cleanupCountedDrain(Event *counted_drain)
394{
395 CountedDrainEvent *event =
396 dynamic_cast<CountedDrainEvent *>(counted_drain);
397 if (event == NULL) {
398 fatal("Called cleanupCountedDrain() on an event that was not "
399 "a CountedDrainEvent.");
400 }
401 assert(event->getCount() == 0);
402 delete event;
403}
404
405void
406serializeAll(const std::string &cpt_dir)
407{
408 Serializable::serializeAll(cpt_dir);
409}
410
411void
412unserializeAll(const std::string &cpt_dir)
413{
414 Serializable::unserializeAll(cpt_dir);
415}
416
417/**
418 * Queue of C++ callbacks to invoke on simulator exit.
419 */
420CallbackQueue&
421exitCallbacks()
422{
423 static CallbackQueue theQueue;
424 return theQueue;
425}
426
427/**
428 * Register an exit callback.
429 */
430void
431registerExitCallback(Callback *callback)
432{
433 exitCallbacks().add(callback);
434}
435
436BaseCPU *
437convertToBaseCPUPtr(SimObject *obj)
438{
439 BaseCPU *ptr = dynamic_cast<BaseCPU *>(obj);
440
441 if (ptr == NULL)
442 warn("Casting to BaseCPU pointer failed");
443 return ptr;
444}
445
446System *
447convertToSystemPtr(SimObject *obj)
448{
449 System *ptr = dynamic_cast<System *>(obj);
450
451 if (ptr == NULL)
452 warn("Casting to System pointer failed");
453 return ptr;
454}
455
456
457/**
458 * Do C++ simulator exit processing. Exported to SWIG to be invoked
459 * when simulator terminates via Python's atexit mechanism.
460 */
461void
462doExitCleanup()
463{
464 exitCallbacks().process();
465 exitCallbacks().clear();
466
467 cout.flush();
468
469 ParamContext::cleanupAllContexts();
470
471 // print simulation stats
472 Stats::DumpNow();
473}
| 162
163 PyRun_SimpleString("import m5.main");
164 PyRun_SimpleString("m5.main.main()");
165
166 // clean up Python intepreter.
167 Py_Finalize();
168}
169
170
171void
172setOutputDir(const string &dir)
173{
174 simout.setDirectory(dir);
175}
176
177
178IniFile inifile;
179
180SimObject *
181createSimObject(const string &name)
182{
183 return SimObjectClass::createObject(inifile, name);
184}
185
186
187/**
188 * Pointer to the Python function that maps names to SimObjects.
189 */
190PyObject *resolveFunc = NULL;
191
192/**
193 * Convert a pointer to the Python object that SWIG wraps around a C++
194 * SimObject pointer back to the actual C++ pointer. See main.i.
195 */
196extern "C" SimObject *convertSwigSimObjectPtr(PyObject *);
197
198
199SimObject *
200resolveSimObject(const string &name)
201{
202 PyObject *pyPtr = PyEval_CallFunction(resolveFunc, "(s)", name.c_str());
203 if (pyPtr == NULL) {
204 PyErr_Print();
205 panic("resolveSimObject: failure on call to Python for %s", name);
206 }
207
208 SimObject *simObj = convertSwigSimObjectPtr(pyPtr);
209 if (simObj == NULL)
210 panic("resolveSimObject: failure on pointer conversion for %s", name);
211
212 return simObj;
213}
214
215
216/**
217 * Load config.ini into C++ database. Exported to Python via SWIG;
218 * invoked from m5.instantiate().
219 */
220void
221loadIniFile(PyObject *_resolveFunc)
222{
223 resolveFunc = _resolveFunc;
224 configStream = simout.find("config.out");
225
226 // The configuration database is now complete; start processing it.
227 inifile.load(simout.resolve("config.ini"));
228
229 // Initialize statistics database
230 Stats::InitSimStats();
231}
232
233
234/**
235 * Look up a MemObject port. Helper function for connectPorts().
236 */
237Port *
238lookupPort(SimObject *so, const std::string &name, int i)
239{
240 MemObject *mo = dynamic_cast<MemObject *>(so);
241 if (mo == NULL) {
242 warn("error casting SimObject %s to MemObject", so->name());
243 return NULL;
244 }
245
246 Port *p = mo->getPort(name, i);
247 if (p == NULL)
248 warn("error looking up port %s on object %s", name, so->name());
249 return p;
250}
251
252
253/**
254 * Connect the described MemObject ports. Called from Python via SWIG.
255 */
256int
257connectPorts(SimObject *o1, const std::string &name1, int i1,
258 SimObject *o2, const std::string &name2, int i2)
259{
260 Port *p1 = lookupPort(o1, name1, i1);
261 Port *p2 = lookupPort(o2, name2, i2);
262
263 if (p1 == NULL || p2 == NULL) {
264 warn("connectPorts: port lookup error");
265 return 0;
266 }
267
268 p1->setPeer(p2);
269 p2->setPeer(p1);
270
271 return 1;
272}
273
274/**
275 * Do final initialization steps after object construction but before
276 * start of simulation.
277 */
278void
279finalInit()
280{
281 // Parse and check all non-config-hierarchy parameters.
282 ParamContext::parseAllContexts(inifile);
283 ParamContext::checkAllContexts();
284
285 // Echo all parameter settings to stats file as well.
286 ParamContext::showAllContexts(*configStream);
287
288 // Do a second pass to finish initializing the sim objects
289 SimObject::initAll();
290
291 // Restore checkpointed state, if any.
292#if 0
293 configHierarchy.unserializeSimObjects();
294#endif
295
296 SimObject::regAllStats();
297
298 // Check to make sure that the stats package is properly initialized
299 Stats::check();
300
301 // Reset to put the stats in a consistent state.
302 Stats::reset();
303
304 SimStartup();
305}
306
307
308/** Simulate for num_cycles additional cycles. If num_cycles is -1
309 * (the default), do not limit simulation; some other event must
310 * terminate the loop. Exported to Python via SWIG.
311 * @return The SimLoopExitEvent that caused the loop to exit.
312 */
313SimLoopExitEvent *
314simulate(Tick num_cycles = MaxTick)
315{
316 warn("Entering event queue @ %d. Starting simulation...\n", curTick);
317
318 if (num_cycles < 0)
319 fatal("simulate: num_cycles must be >= 0 (was %d)\n", num_cycles);
320 else if (curTick + num_cycles < 0) //Overflow
321 num_cycles = MaxTick;
322 else
323 num_cycles = curTick + num_cycles;
324
325 Event *limit_event = schedExitSimLoop("simulate() limit reached",
326 num_cycles);
327
328 while (1) {
329 // there should always be at least one event (the SimLoopExitEvent
330 // we just scheduled) in the queue
331 assert(!mainEventQueue.empty());
332 assert(curTick <= mainEventQueue.nextTick() &&
333 "event scheduled in the past");
334
335 // forward current cycle to the time of the first event on the
336 // queue
337 curTick = mainEventQueue.nextTick();
338 Event *exit_event = mainEventQueue.serviceOne();
339 if (exit_event != NULL) {
340 // hit some kind of exit event; return to Python
341 // event must be subclass of SimLoopExitEvent...
342 SimLoopExitEvent *se_event = dynamic_cast<SimLoopExitEvent *>(exit_event);
343 if (se_event == NULL)
344 panic("Bogus exit event class!");
345
346 // if we didn't hit limit_event, delete it
347 if (se_event != limit_event) {
348 assert(limit_event->scheduled());
349 limit_event->deschedule();
350 delete limit_event;
351 }
352
353 return se_event;
354 }
355
356 if (async_event) {
357 async_event = false;
358 if (async_dump) {
359 async_dump = false;
360
361 using namespace Stats;
362 SetupEvent(Dump, curTick);
363 }
364
365 if (async_dumpreset) {
366 async_dumpreset = false;
367
368 using namespace Stats;
369 SetupEvent(Dump | Reset, curTick);
370 }
371
372 if (async_exit) {
373 async_exit = false;
374 exitSimLoop("user interrupt received");
375 }
376
377 if (async_io || async_alarm) {
378 async_io = false;
379 async_alarm = false;
380 pollQueue.service();
381 }
382 }
383 }
384
385 // not reached... only exit is return on SimLoopExitEvent
386}
387
388Event *
389createCountedDrain()
390{
391 return new CountedDrainEvent();
392}
393
394void
395cleanupCountedDrain(Event *counted_drain)
396{
397 CountedDrainEvent *event =
398 dynamic_cast<CountedDrainEvent *>(counted_drain);
399 if (event == NULL) {
400 fatal("Called cleanupCountedDrain() on an event that was not "
401 "a CountedDrainEvent.");
402 }
403 assert(event->getCount() == 0);
404 delete event;
405}
406
407void
408serializeAll(const std::string &cpt_dir)
409{
410 Serializable::serializeAll(cpt_dir);
411}
412
413void
414unserializeAll(const std::string &cpt_dir)
415{
416 Serializable::unserializeAll(cpt_dir);
417}
418
419/**
420 * Queue of C++ callbacks to invoke on simulator exit.
421 */
422CallbackQueue&
423exitCallbacks()
424{
425 static CallbackQueue theQueue;
426 return theQueue;
427}
428
429/**
430 * Register an exit callback.
431 */
432void
433registerExitCallback(Callback *callback)
434{
435 exitCallbacks().add(callback);
436}
437
438BaseCPU *
439convertToBaseCPUPtr(SimObject *obj)
440{
441 BaseCPU *ptr = dynamic_cast<BaseCPU *>(obj);
442
443 if (ptr == NULL)
444 warn("Casting to BaseCPU pointer failed");
445 return ptr;
446}
447
448System *
449convertToSystemPtr(SimObject *obj)
450{
451 System *ptr = dynamic_cast<System *>(obj);
452
453 if (ptr == NULL)
454 warn("Casting to System pointer failed");
455 return ptr;
456}
457
458
459/**
460 * Do C++ simulator exit processing. Exported to SWIG to be invoked
461 * when simulator terminates via Python's atexit mechanism.
462 */
463void
464doExitCleanup()
465{
466 exitCallbacks().process();
467 exitCallbacks().clear();
468
469 cout.flush();
470
471 ParamContext::cleanupAllContexts();
472
473 // print simulation stats
474 Stats::DumpNow();
475}
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