| 1 | package desmoj.core.simulator; |
| 2 | |
| 3 | import java.util.ArrayList; |
| 4 | import java.util.Enumeration; |
| 5 | import java.util.Vector; //TODO: oder dem Anwender �berlassen...? |
| 6 | |
| 7 | import desmoj.core.advancedModellingFeatures.Res; |
| 8 | import desmoj.core.report.ErrorMessage; |
| 9 | |
| 10 | /** |
| 11 | * Sim-process represents entities with an own active lifecycle. Since |
| 12 | * Sim-processes are in fact special entities with extended capabilities (esp. |
| 13 | * the method <tt>lifeCycle()</tt>), they inherit from Entity and thus can also be used |
| 14 | * in conjunction with events. So they can be handled in both ways, event- and |
| 15 | * process-oriented. Clients are supposed to implement the lifeCycle() method to |
| 16 | * specify the individual behaviour of a special SimProcess subclass. Since |
| 17 | * implementing activity- and transaction-oriented synchronization mechanisms |
| 18 | * requires significant changes in this class, methods that have been |
| 19 | * implemented by Soenke Claassen have been marked. |
| 20 | * |
| 21 | * @version DESMO-J, Ver. 2.3.3 copyright (c) 2011 |
| 22 | * @author Tim Lechler. |
| 23 | * @author Methods: canCooperate, clearInterruptCode, cooperate, |
| 24 | * getInterruptCode, getMaster, getSlaveWaitQueue, IsInterrupted, |
| 25 | * resetMaster and setSlaveWaitQueue by Soenke Claassen |
| 26 | * |
| 27 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 28 | * you may not use this file except in compliance with the License. You |
| 29 | * may obtain a copy of the License at |
| 30 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 31 | * |
| 32 | * Unless required by applicable law or agreed to in writing, software |
| 33 | * distributed under the License is distributed on an "AS IS" |
| 34 | * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| 35 | * or implied. See the License for the specific language governing |
| 36 | * permissions and limitations under the License. |
| 37 | * |
| 38 | */ |
| 39 | public abstract class SimProcess extends Entity { |
| 40 | |
| 41 | /** |
| 42 | * The Thread needed for implementing coroutine behaviour. |
| 43 | */ |
| 44 | private Thread _myThread; |
| 45 | |
| 46 | /** |
| 47 | * Displays the current blocked status of this SimProcess. A sim-process is |
| 48 | * blocked whenever it has to wait inside a queue or synchronization object. |
| 49 | */ |
| 50 | private boolean _isBlocked; |
| 51 | |
| 52 | /** |
| 53 | * Displays the current status of this SimProcess. Is <code>true</code> if |
| 54 | * lifeCycle method has finished, <code>false</code> if it is still running |
| 55 | * or has not been started yet |
| 56 | */ |
| 57 | private boolean _isTerminated; |
| 58 | |
| 59 | /** |
| 60 | * Displays if the thread in of control of this SimProcess is already the |
| 61 | * associated simthread. Is <code>true</code> if the simthread is active and |
| 62 | * is carrying on its lifeCycle. Is <code>false</code> if it has not started |
| 63 | * its lifeCycle yet or is terminated already. |
| 64 | */ |
| 65 | private boolean _isRunning; |
| 66 | |
| 67 | /** |
| 68 | * If this SimProcess is cooperating as a slave with a master process, it |
| 69 | * keeps a reference to its master here. Master is set in the |
| 70 | * <code>cooperate()</code> -method, when the slave cooperates with his |
| 71 | * master and deleted every time the slave process is activated. |
| 72 | * |
| 73 | * @author Soenke Claassen |
| 74 | */ |
| 75 | private SimProcess _master; |
| 76 | |
| 77 | /** |
| 78 | * If this SimProcess is cooperating as a slave it has to wait in this |
| 79 | * waitQueue until a master is cooperating with it. |
| 80 | * |
| 81 | * @author Soenke Claassen |
| 82 | */ |
| 83 | private ProcessQueue<? extends SimProcess> _slaveWaitQueue; |
| 84 | |
| 85 | /** |
| 86 | * The <code>InterruptCode</code> with which this SimProcess is interrupted. |
| 87 | * |
| 88 | * @author Soenke Claassen |
| 89 | */ |
| 90 | private InterruptCode _irqCode; |
| 91 | |
| 92 | /** |
| 93 | * The <code>Vector</code> holding all the resources this SimProcess is |
| 94 | * using at the moment. |
| 95 | * |
| 96 | * @author Soenke Claassen |
| 97 | */ |
| 98 | private Vector<Resource> _usedResources; |
| 99 | |
| 100 | /** |
| 101 | * A reference to the container this SimProcess belongs to. Is |
| 102 | * <code>null</code> as long as this SimProcess is not contained in any |
| 103 | * <code>ComplexSimProcess</code>. |
| 104 | * |
| 105 | * @author Soenke Claassen |
| 106 | */ |
| 107 | private ComplexSimProcess _supervisor; |
| 108 | |
| 109 | /** |
| 110 | * The realTime deadline for this SimProcess in nanoseconds. In case of a |
| 111 | * real-time execution (i. e. the execution speed rate is set to a positive |
| 112 | * value) the Scheduler will produce a warning message if a deadline is |
| 113 | * missed. |
| 114 | */ |
| 115 | private long _realTimeConstraint; |
| 116 | |
| 117 | /** |
| 118 | * Constructs a sim-process. |
| 119 | * |
| 120 | * @param name |
| 121 | * java.lang.String : The name of the sim-process |
| 122 | * @param owner |
| 123 | * Model : The model this SimProcess is associated to |
| 124 | * @param showInTrace |
| 125 | * boolean : Flag for showing SimProcess in trace-files. Set it |
| 126 | * to <code>true</code> if SimProcess should show up in trace. |
| 127 | * Set it to <code>false</code> if SimProcess should not be shown |
| 128 | * in trace. |
| 129 | */ |
| 130 | public SimProcess(Model owner, String name, boolean showInTrace) { |
| 131 | |
| 132 | super(owner, name, showInTrace); |
| 133 | |
| 134 | // init variables |
| 135 | _isBlocked = false; // not waiting in queue so far |
| 136 | _isRunning = false; // not running so far |
| 137 | _isTerminated = false; // not terminated either |
| 138 | _master = null; // this SimProcess has no master, so far |
| 139 | _slaveWaitQueue = null; // this SimProcess is not waiting in any queue |
| 140 | _irqCode = null; // this is not interrupted |
| 141 | |
| 142 | // set up simthread |
| 143 | _myThread = new SimThread(getModel().getExperiment().getThreadGroup(), |
| 144 | this); |
| 145 | |
| 146 | // set up the Vector holding the used Resources |
| 147 | _usedResources = new Vector<Resource>(); |
| 148 | |
| 149 | // this SimProcess is not contained in any ComplexSimProcess yet |
| 150 | _supervisor = null; |
| 151 | |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Used to synchronize the change of control between scheduler and |
| 156 | * Sim-processes. This method must only be called by the scheduler resp. the |
| 157 | * experiment's main thread in order to prevent multiple SimProcess' threads |
| 158 | * running in parallel which has to be avoided. |
| 159 | */ |
| 160 | synchronized void resume() { |
| 161 | |
| 162 | // check that the SimThread has not finished yet |
| 163 | if (_isTerminated) { |
| 164 | sendWarning( |
| 165 | "Can't activate SimProcess! Command ignored.", |
| 166 | "SimProcess : " + getName() + " Method: void resume()", |
| 167 | "The sim-process' lifeCycle method has already terminated.", |
| 168 | "Be sure to check the sim-process' status before resuming." |
| 169 | + " Use method isTerminated() to check the current status"); |
| 170 | return; |
| 171 | } |
| 172 | |
| 173 | // wake up the SimThread waiting in a block for the sim-process' lock |
| 174 | // to be released |
| 175 | notify(); |
| 176 | |
| 177 | // now go wait until the next notification by the SimThread |
| 178 | // of this SimProcess |
| 179 | try { |
| 180 | wait(); |
| 181 | } catch (InterruptedException irqEx) { // must be caught when using |
| 182 | // wait |
| 183 | // create eror message |
| 184 | ErrorMessage errmsg = new ErrorMessage(getModel(), |
| 185 | "Simulation stopped!", |
| 186 | "InterruptedException thrown by Java VM : " + irqEx, |
| 187 | "Thread conflict assumed.", "Check Java VM.", presentTime()); |
| 188 | // throw it back to Experiment's start routine |
| 189 | throw (new desmoj.core.exception.DESMOJException(errmsg)); |
| 190 | } |
| 191 | |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Schedules the sim-process to be activated at the specified point in |
| 196 | * simulation time. The point of time is given as an offset to the current |
| 197 | * simulation time. This will allow a sim-process to continue executing its |
| 198 | * <code>lifeCycle</code> method. Thus in contrast to the entity, no Event |
| 199 | * is needed for scheduling here. |
| 200 | * |
| 201 | * @param dt |
| 202 | * TimeSpan : The offset to the current simulation time this |
| 203 | * process is to be activated |
| 204 | */ |
| 205 | public void activate(TimeSpan dt) { |
| 206 | if (isBlocked()) { |
| 207 | sendWarning( |
| 208 | "Can't activate SimProcess! Command ignored.", |
| 209 | "SimProcess : " + getName() |
| 210 | + " Method: activate(TimeSpan dt)", |
| 211 | "The sim-process to be activated is blocked inside " |
| 212 | + "a higher level synchronization object.", |
| 213 | "Simprocesses waiting inside higher synchronization " |
| 214 | + "constructs can not be activated by other SimProcesses or " |
| 215 | + "events!"); |
| 216 | return; // is blocked in some synch construction |
| 217 | } |
| 218 | |
| 219 | if (dt == null) { |
| 220 | sendWarning( |
| 221 | "Can't activate SimProcess! Command ignored.", |
| 222 | "SimProcess : " + getName() + " Method: void activate" |
| 223 | + "(TimeSpan dt)", |
| 224 | "The simulation time given as parameter is a null reference", |
| 225 | "Be sure to have a valid simulation time reference before " |
| 226 | + "calling this method"); |
| 227 | return; // no proper parameter |
| 228 | } |
| 229 | // tell in the trace when the sim-process will be activated |
| 230 | if (currentlySendTraceNotes()) { |
| 231 | if (this == currentSimProcess()) { |
| 232 | if (dt == TimeSpan.ZERO) { |
| 233 | sendTraceNote("activates itself immediately (NOW)"); |
| 234 | } else { |
| 235 | if (TimeSpan.isEqual(dt, TimeSpan.ZERO)) { |
| 236 | sendTraceNote("activates itself now"); |
| 237 | } else { |
| 238 | sendTraceNote("activates itself at " |
| 239 | + TimeOperations.add(presentTime(), dt) |
| 240 | .toString()); |
| 241 | } |
| 242 | } |
| 243 | } else { // this is not the currently running SimProcess |
| 244 | |
| 245 | if (dt == TimeSpan.ZERO) { |
| 246 | sendTraceNote("activates " + getQuotedName() |
| 247 | + " immediately (NOW)"); |
| 248 | } else { |
| 249 | if (TimeSpan.isEqual(dt, TimeSpan.ZERO)) { |
| 250 | sendTraceNote("activates " + getQuotedName() + " now"); |
| 251 | } else { |
| 252 | sendTraceNote("activates " |
| 253 | + getQuotedName() |
| 254 | + " at " |
| 255 | + TimeOperations.add(presentTime(), dt) |
| 256 | .toString()); |
| 257 | } |
| 258 | } |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | // schedule this SimProcess |
| 263 | getModel().getExperiment().getScheduler().schedule(this, null, dt); |
| 264 | |
| 265 | // debug output |
| 266 | if (currentlySendDebugNotes()) { |
| 267 | sendDebugNote("is activated on EventList<br>" |
| 268 | + getModel().getExperiment().getScheduler().toString()); |
| 269 | } |
| 270 | |
| 271 | resetMaster(); // if activate(TimeSpan dt) is called for this |
| 272 | // SimProcess, |
| 273 | // there is no Master anymore controlling it. |
| 274 | |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * Schedules the sim-process to be activated at the present point in |
| 279 | * simulation time, yielding the same result as calling |
| 280 | * <code>activate(new TimeSpan(0))</code>. The process will continue executing |
| 281 | * its <code>lifeCycle</code> method. |
| 282 | */ |
| 283 | public void activate() { |
| 284 | if (isBlocked()) { |
| 285 | sendWarning( |
| 286 | "Can't activate SimProcess! Command ignored.", |
| 287 | "SimProcess : " + getName() |
| 288 | + " Method: activate()", |
| 289 | "The sim-process to be activated is blocked inside " |
| 290 | + "a higher level synchronization object.", |
| 291 | "Simprocesses waiting inside higher synchronization " |
| 292 | + "constructs can not be activated by other SimProcesses or " |
| 293 | + "events!"); |
| 294 | return; // is blocked in some synch construction |
| 295 | } |
| 296 | |
| 297 | // tell in the trace when the sim-process will be activated |
| 298 | if (currentlySendTraceNotes()) { |
| 299 | if (this == currentSimProcess()) { |
| 300 | sendTraceNote("activates itself now"); |
| 301 | } else { // this is not the currently running SimProcess |
| 302 | sendTraceNote("activates " + getQuotedName() + " now"); |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | // schedule this SimProcess |
| 307 | getModel().getExperiment().getScheduler().schedule(this, null, new TimeSpan(0)); |
| 308 | |
| 309 | // debug output |
| 310 | if (currentlySendDebugNotes()) { |
| 311 | sendDebugNote("is activated on EventList<br>" |
| 312 | + getModel().getExperiment().getScheduler().toString()); |
| 313 | } |
| 314 | |
| 315 | resetMaster(); // if activate(TimeSpan dt) is called for this |
| 316 | // SimProcess, |
| 317 | // there is no Master anymore controlling it. |
| 318 | } |
| 319 | |
| 320 | /** |
| 321 | * Schedules the sim-process to be activated at the given point in simulation |
| 322 | * time. This will allow a sim-process to continue executing its |
| 323 | * <code>lifeCycle</code> method. |
| 324 | * |
| 325 | * @param when |
| 326 | * TimeInstant : The point in simulation time this process is to |
| 327 | * be activated. |
| 328 | */ |
| 329 | public void activate(TimeInstant when) { |
| 330 | if (isBlocked()) { |
| 331 | sendWarning( |
| 332 | "Can't activate SimProcess! Command ignored.", |
| 333 | "SimProcess : " + getName() |
| 334 | + " Method: activate(TimeInstant when)", |
| 335 | "The sim-process to be activated is blocked inside " |
| 336 | + "a higher level synchronization object.", |
| 337 | "Simprocesses waiting inside higher synchronization " |
| 338 | + "constructs can not be activated by other SimProcesses or " |
| 339 | + "events!"); |
| 340 | return; // is blocked in some synch construction |
| 341 | } |
| 342 | |
| 343 | if (when == null) { |
| 344 | sendWarning( |
| 345 | "Can't activate SimProcess! Command ignored.", |
| 346 | "SimProcess : " + getName() + " Method: void activate" |
| 347 | + "(TimeInstant when)", |
| 348 | "The simulation time given as parameter is a null reference", |
| 349 | "Be sure to have a valid simulation time reference before " |
| 350 | + "calling this method"); |
| 351 | return; // no proper parameter |
| 352 | } |
| 353 | // tell in the trace when the sim-process will be activated |
| 354 | if (currentlySendTraceNotes()) { |
| 355 | if (this == currentSimProcess()) { |
| 356 | if (when == presentTime()) { |
| 357 | sendTraceNote("activates itself immediately (NOW)"); |
| 358 | } else { |
| 359 | if (TimeInstant.isEqual(when, presentTime())) { |
| 360 | sendTraceNote("activates itself now"); |
| 361 | } else { |
| 362 | sendTraceNote("activates itself at " + when.toString()); |
| 363 | |
| 364 | } |
| 365 | } |
| 366 | } else { // this is not the currently running SimProcess |
| 367 | |
| 368 | if (when == presentTime()) { |
| 369 | sendTraceNote("activates " + getQuotedName() |
| 370 | + " immediately (NOW)"); |
| 371 | } else { |
| 372 | // stand auch oben: if (dt.getTimeValue() == 0.0) { |
| 373 | if (TimeInstant.isEqual(when, presentTime())) { |
| 374 | sendTraceNote("activates " + getQuotedName() + " now"); |
| 375 | } else { |
| 376 | sendTraceNote("activates " + getQuotedName() + " at " |
| 377 | + when.toString()); |
| 378 | } |
| 379 | } |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | // schedule this SimProcess |
| 384 | getModel().getExperiment().getScheduler().schedule(this, null, when); |
| 385 | |
| 386 | // debug output |
| 387 | if (currentlySendDebugNotes()) { |
| 388 | sendDebugNote("is activated on EventList<br>" |
| 389 | + getModel().getExperiment().getScheduler().toString()); |
| 390 | } |
| 391 | |
| 392 | resetMaster(); // if activate(TimeInstant when) is called for this |
| 393 | // SimProcess, |
| 394 | // there is no Master anymore controlling it. |
| 395 | } |
| 396 | |
| 397 | /** |
| 398 | * @deprecated Replaced by activate(TimeSpan dt). Schedules the sim-process |
| 399 | * to be activated at the given time offset to the current |
| 400 | * simulation time. This will allow a sim-process to continue |
| 401 | * executing its <code>lifeCycle</code> method. |
| 402 | * |
| 403 | * @param dt |
| 404 | * SimTime : The offset to the current simulation time that this |
| 405 | * SimProcess is due to be activated |
| 406 | */ |
| 407 | @Deprecated |
| 408 | public void activate(SimTime dt) { |
| 409 | activate(SimTime.toTimeSpan(dt)); |
| 410 | |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Schedules this SimProcess to be activated directly after the given |
| 415 | * Schedulable, which itself is already scheduled. Note that this |
| 416 | * Sim-process' point of simulation time will be set to be the same as the |
| 417 | * Schedulable's time. Thus this SimProcess will continue to execute its |
| 418 | * <code>lifeCycle</code> method directly after the given Schedulable but |
| 419 | * the simulation clock will not change. Please make sure that the |
| 420 | * Schedulable given as parameter is actually scheduled. |
| 421 | * |
| 422 | * @param after |
| 423 | * Schedulable : The Schedulable this SimProcess should be |
| 424 | * scheduled after |
| 425 | */ |
| 426 | public void activateAfter(Schedulable after) { |
| 427 | |
| 428 | if (after == null) { |
| 429 | sendWarning( |
| 430 | "Can't activate this SimProcess after the given SimProcess " |
| 431 | + "parameter! Command ignored.", "SimProcess : " |
| 432 | + getName() + " Method: void " |
| 433 | + "activateAfter(Schedulable after)", |
| 434 | "The Schedulable given as parameter is a null reference", |
| 435 | "Be sure to have a valid Schedulable reference before " |
| 436 | + "calling this method"); |
| 437 | return; // no proper parameter |
| 438 | } |
| 439 | |
| 440 | if (isBlocked()) { |
| 441 | sendWarning( |
| 442 | "Can't activate SimProcess! Command ignored.", |
| 443 | "SimProcess : " + getName() |
| 444 | + " Method: void activateAfter(Schedulable after)", |
| 445 | "The sim-process to be activated is blocked inside " |
| 446 | + "a higher level synchronization object.", |
| 447 | "Simprocesses waiting inside higher synchronization " |
| 448 | + "constructs can not be activated by other SimProcesses or " |
| 449 | + "events!"); |
| 450 | return; // is blocked in some synch construction |
| 451 | } |
| 452 | |
| 453 | if (currentlySendTraceNotes()) { |
| 454 | if (this == currentSimProcess()) { |
| 455 | sendTraceNote("activates itself after " + getQuotedName()); |
| 456 | } else { |
| 457 | sendTraceNote("activates " + getQuotedName() + " after " |
| 458 | + after.getQuotedName()); |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | // schedule this SimProcess |
| 463 | getModel().getExperiment().getScheduler().scheduleAfter(after, this, |
| 464 | null); |
| 465 | |
| 466 | if (currentlySendDebugNotes()) { |
| 467 | sendDebugNote("is activated after " + after.getQuotedName() |
| 468 | + " on EventList<br>" |
| 469 | + getModel().getExperiment().getScheduler().toString()); |
| 470 | } |
| 471 | |
| 472 | } |
| 473 | |
| 474 | /** |
| 475 | * Schedules this SimProcess to be activated directly before the given |
| 476 | * Schedulable, which itself is already scheduled. Note that this |
| 477 | * Sim-process' point of simulation time will be set to be the same as the |
| 478 | * Schedulable's time. Thus this SimProcess will continue to execute its |
| 479 | * <code>lifeCycle</code> method directly before the given Schedulable but |
| 480 | * the simulation clock will not change. Please make sure that the |
| 481 | * Schedulable given as parameter is actually scheduled. |
| 482 | * |
| 483 | * @param before |
| 484 | * Schedulable : The Schedulable this SimProcess should be |
| 485 | * scheduled before |
| 486 | */ |
| 487 | public void activateBefore(Schedulable before) { |
| 488 | |
| 489 | if (before == null) { |
| 490 | sendWarning("Can't activate this SimProcess before the given " |
| 491 | + "SimProcess parameter", "SimProcess : " + getName() |
| 492 | + " Method: void activateBefore" + "(Schedulable before)", |
| 493 | "The Schedulable given as parameter is a null reference", |
| 494 | "Be sure to have a valid Schedulable reference before " |
| 495 | + "calling this method"); |
| 496 | return; // no proper parameter |
| 497 | } |
| 498 | |
| 499 | if (isBlocked()) { |
| 500 | sendWarning( |
| 501 | "Can't activate SimProcess! Command ignored.", |
| 502 | "SimProcess : " |
| 503 | + getName() |
| 504 | + " Method: void activateBefore(Schedulable before)", |
| 505 | "The sim-process to be activated is blocked inside " |
| 506 | + "a higher level synchronization object.", |
| 507 | "Simprocesses waiting inside higher synchronization " |
| 508 | + "constructs can not be activated by other SimProcesses or " |
| 509 | + "events!"); |
| 510 | return; // is blocked in some synch construction |
| 511 | } |
| 512 | |
| 513 | if (currentlySendTraceNotes()) { |
| 514 | if (this == currentSimProcess()) { |
| 515 | sendTraceNote("activates itself before " |
| 516 | + before.getQuotedName()); |
| 517 | } else { |
| 518 | sendTraceNote("activates " + getQuotedName() + " before " |
| 519 | + before.getQuotedName()); |
| 520 | } |
| 521 | } |
| 522 | |
| 523 | // schedule this SimProcess |
| 524 | getModel().getExperiment().getScheduler().scheduleBefore(before, this, |
| 525 | null); |
| 526 | |
| 527 | if (currentlySendDebugNotes()) { |
| 528 | sendDebugNote("activateBefore " + before.getQuotedName() |
| 529 | + " on EventList<br>" |
| 530 | + getModel().getExperiment().getScheduler().toString()); |
| 531 | } |
| 532 | |
| 533 | // hand control over to scheduler only if this is |
| 534 | // a running thread of SimProcess |
| 535 | // if ( isRunning ) passivate(); |
| 536 | |
| 537 | resetMaster(); // if activateBefore() is called for this SimProcess, |
| 538 | // there is no Master anymore controlling it. |
| 539 | |
| 540 | } |
| 541 | |
| 542 | /** |
| 543 | * Returns <code>true</code> if this process can cooperate with another |
| 544 | * Sim-process. If this process is already cooperating with a master |
| 545 | * <code>false</code> is returned. |
| 546 | * |
| 547 | * @return boolean : Is this process ready to cooperate with another |
| 548 | * SimProcess? |
| 549 | * @author Soenke Claassen |
| 550 | */ |
| 551 | public boolean canCooperate() { |
| 552 | return _master == null; // if the master is not set yet this SimProcess |
| 553 | // can cooperate with another SimProcess |
| 554 | } |
| 555 | |
| 556 | /** |
| 557 | * Resets the interrupt-status of this SimProcess to not interrupted. Should |
| 558 | * be called every time the sim-process has successfully dealt with the |
| 559 | * interrupt. The internal <code>InterruptCode</code> of this SimProcess |
| 560 | * will be reset to <code>null</code>. |
| 561 | * |
| 562 | * @author Soenke Claassen |
| 563 | */ |
| 564 | public void clearInterruptCode() { |
| 565 | this._irqCode = null; |
| 566 | } |
| 567 | |
| 568 | /** |
| 569 | * The current (master) process is calling this method (within |
| 570 | * <code>WaitQueue.cooperate()</code>) on the slave process to lead him |
| 571 | * through the joint cooperation. After the joint cooperation is finished |
| 572 | * the master is still active and after him the slave will be activated. |
| 573 | * |
| 574 | * @author Soenke Claassen |
| 575 | */ |
| 576 | public void cooperate() { |
| 577 | // this is the slave and current the master |
| 578 | |
| 579 | // check if this slave already has a master |
| 580 | if (this._master != null) { |
| 581 | sendWarning( |
| 582 | "Slaves can not cooperate with more than one master at a " |
| 583 | + "time! The attempted cooperation is ignored.", |
| 584 | "SimProcess : " + getName() + " Method: cooperate () ", |
| 585 | "This slave process is already cooperating with another " |
| 586 | + "master: " + _master.getName(), |
| 587 | "Be sure to have finished one cooperation before starting " |
| 588 | + "the next one."); |
| 589 | return; // this process has a master already |
| 590 | } |
| 591 | |
| 592 | // check if this slave is not terminated yet |
| 593 | if (this._isTerminated) { |
| 594 | sendWarning( |
| 595 | "Attempt to cooperate with a terminated slave process! " |
| 596 | + "The attempted cooperation is ignored.", |
| 597 | "SimProcess : " + getName() + " Method: cooperate () ", |
| 598 | "This slave process is already terminated.", |
| 599 | "Make sure not to cooperate with terminated processes."); |
| 600 | return; // this process is already terminated |
| 601 | } |
| 602 | |
| 603 | // check the master |
| 604 | SimProcess currentMaster = currentSimProcess(); // the current master |
| 605 | // process |
| 606 | if (currentMaster == null) // if currentMaster is only a null pointer |
| 607 | { |
| 608 | sendWarning("A non existing process is trying to cooperate as a " |
| 609 | + "master! The attempted cooperation is ignored!", |
| 610 | "SimProcess : " + getName() + " Method: cooperate ()", |
| 611 | "The master process is only a null pointer.", |
| 612 | "Make sure that only real SimProcesses are cooperating with other " |
| 613 | + "processes. "); |
| 614 | return; // the currentMaster process is only a null pointer |
| 615 | } |
| 616 | |
| 617 | if (!isModelCompatible(currentMaster)) { |
| 618 | sendWarning( |
| 619 | "The given master SimProcess object does not " |
| 620 | + "belong to this model. The attempted cooperation is ignored!", |
| 621 | "SimProcess : " + getName() + " Method: cooperate ()", |
| 622 | "The master SimProcess is not modelcompatible.", |
| 623 | "Make sure that the processes all belong to this model."); |
| 624 | return; // the currentMaster is not modelcompatible |
| 625 | } |
| 626 | |
| 627 | // the slave must be waiting in a WaitQueue |
| 628 | if (_slaveWaitQueue == null) { |
| 629 | sendWarning( |
| 630 | "Attempt to cooperate with a slave process, that is not " |
| 631 | + "waiting in a WaitQueue. The attempted cooperation is ignored!", |
| 632 | "SimProcess : " + getName() + " Method: cooperate ()", |
| 633 | "Slave processes must wait in a WaitQueue before they can get into " |
| 634 | + "a cooperation.", |
| 635 | "Make sure that the slave processes are waiting in a WaitQueue."); |
| 636 | return; // the slave is not waiting in a queue |
| 637 | } |
| 638 | |
| 639 | // now prepare for the real cooperation |
| 640 | this._master = currentMaster; // set the master for this slave process |
| 641 | |
| 642 | // leave a note in the trace |
| 643 | if (_master.currentlySendTraceNotes()) { |
| 644 | // trace note for a cooperation without any special conditions |
| 645 | sendTraceNote("cooperates " + this.getQuotedName() + " from " |
| 646 | + _slaveWaitQueue.getQuotedName()); |
| 647 | } |
| 648 | |
| 649 | // get this slave out of his slaveWaitQueue |
| 650 | _slaveWaitQueue.remove(this); |
| 651 | // this slave process is not waiting in any slaveWaitingQueue anymore |
| 652 | _slaveWaitQueue = null; |
| 653 | // and therefore this slave process is not blocked anymore |
| 654 | this._isBlocked = false; |
| 655 | |
| 656 | } |
| 657 | |
| 658 | /** |
| 659 | * Method to release the waiting scheduler when the SimThread finishes. |
| 660 | */ |
| 661 | synchronized void freeThread() { |
| 662 | |
| 663 | notify(); // free the scheduler |
| 664 | |
| 665 | } |
| 666 | |
| 667 | /** |
| 668 | * Returns the InterruptCode from this SimProcess. If this SimProcess is not |
| 669 | * interrupted, the InterruptCode is <code>null</code>. |
| 670 | * |
| 671 | * @return irqCode : The InterruptCode of this SimProcess. |
| 672 | * @author Soenke Claassen |
| 673 | */ |
| 674 | public InterruptCode getInterruptCode() { |
| 675 | return _irqCode; |
| 676 | } |
| 677 | |
| 678 | /** |
| 679 | * Returns the master when two SimProcesses are cooperating. If this method |
| 680 | * is called on a sim-process which is not a slave <code>null</code> is |
| 681 | * returned. |
| 682 | * |
| 683 | * @return SimProcess : The master process during the cooperation or |
| 684 | * <code>null</code> if this process is not a slave process. |
| 685 | * @author Soenke Claassen |
| 686 | */ |
| 687 | public SimProcess getMaster() { |
| 688 | return _master; |
| 689 | } |
| 690 | |
| 691 | |
| 692 | /**Returns the realTime deadline for this SimProcess (in nanoseconds). In case of a |
| 693 | * real-time execution (i. e. the execution speed rate is set to a positive |
| 694 | * value) the Scheduler will produce a warning message if a deadline is |
| 695 | * missed. |
| 696 | * |
| 697 | * @return the realTimeConstraint in nanoseconds |
| 698 | */ |
| 699 | public long getRealTimeConstraint() { |
| 700 | return _realTimeConstraint; |
| 701 | } |
| 702 | |
| 703 | /** |
| 704 | * Returns the waiting-queue in which this SimProcess is waiting as a slave |
| 705 | * to cooperate with a master. If this method is called on a sim-process |
| 706 | * which is not a slave <code>null</code> is returned. |
| 707 | * |
| 708 | * @return ProcessQueue : The waiting-queue in which this SimProcess is |
| 709 | * waiting as a slave or <code>null</code> if this SimProcess is not |
| 710 | * waiting as a slave for cooperation. |
| 711 | * @author Soenke Claassen |
| 712 | */ |
| 713 | public ProcessQueue<? extends SimProcess> getSlaveWaitQueue() { |
| 714 | return _slaveWaitQueue; |
| 715 | } |
| 716 | |
| 717 | /** |
| 718 | * Returns the supervising <code>ComplexSimProcess</code> this SimProcess is |
| 719 | * contained in. |
| 720 | * |
| 721 | * @return desmoj.ComplexSimProcess : The supervising |
| 722 | * <code>ComplexSimProcess</code> this SimProcess is contained in. |
| 723 | * Is <code>null</code> if this SimProcess is not contained in any |
| 724 | * <code>ComplexSimProcess</code>. |
| 725 | * @author Soenke Claassen |
| 726 | */ |
| 727 | public ComplexSimProcess getSupervisor() { |
| 728 | |
| 729 | return _supervisor; |
| 730 | } |
| 731 | |
| 732 | /** |
| 733 | * Returns a clone of the internal <code>Vector</code> containing all the |
| 734 | * <code>Resource</code> objects this SimProcess is using at the moment. |
| 735 | * |
| 736 | * @return java.util.Vector : the internal <code>Vector</code> containing |
| 737 | * all the <code>Resource</code> objects this SimProcess is using at |
| 738 | * the moment. |
| 739 | * @author Soenke Claassen |
| 740 | */ |
| 741 | protected Vector<Resource> getUsedResources() { |
| 742 | |
| 743 | // clone the internal Vector |
| 744 | Vector<Resource> usedRes = (Vector<Resource>) _usedResources.clone(); |
| 745 | |
| 746 | // return the cloned Vector |
| 747 | return usedRes; |
| 748 | } |
| 749 | |
| 750 | /** |
| 751 | * Passivates a sim-process for the given span of time. The simthread of this |
| 752 | * Sim-process is put into a lock and the scheduler, resp. the experiment's |
| 753 | * main thread is released from its block and continues with the next |
| 754 | * EventNote to be processed. |
| 755 | * |
| 756 | * @param dt |
| 757 | * TimeSpan : The duration of the sim-process' passivation |
| 758 | */ |
| 759 | public void hold(TimeSpan dt) { |
| 760 | if ((dt == null)) { |
| 761 | sendWarning("Can't schedule SimProcess! Command ignored.", |
| 762 | "SimProcess : " + getName() |
| 763 | + " Method: void hold(TimeSpan dt)", |
| 764 | "The TimeSpan given as parameter is a null reference.", |
| 765 | "Be sure to have a valid TimeSpan reference before calling this method."); |
| 766 | return; // no proper parameter |
| 767 | } |
| 768 | |
| 769 | if (isBlocked()) { |
| 770 | sendWarning( |
| 771 | "Can't activate SimProcess! Command ignored.", |
| 772 | "SimProcess : " + getName() + " Method: hold(TimeSpan dt)", |
| 773 | "The sim-process to be activated is blocked inside " |
| 774 | + "a higher level synchronization object.", |
| 775 | "Simprocesses waiting inside higher synchronization " |
| 776 | + "constructs can not be set to be activated by other " |
| 777 | + "SimProcesses or events!"); |
| 778 | return; // is blocked in some synch construction |
| 779 | } |
| 780 | |
| 781 | if (isScheduled()) { |
| 782 | sendWarning("Can't schedule SimProcess! Command ignored.", |
| 783 | "SimProcess : " + getName() |
| 784 | + " Method: void hold(TimeSpan dt)", |
| 785 | "The sim-process to be scheduled is already scheduled.", |
| 786 | "Use method reActivate(TimeSpan dt) to shift the sim-process " |
| 787 | + "to be scheduled at some other point of time."); |
| 788 | return; // was already scheduled |
| 789 | } |
| 790 | |
| 791 | if (currentlySendTraceNotes()) { |
| 792 | if (this == currentSimProcess()) { |
| 793 | sendTraceNote("holds for " + dt.toString() + " until " |
| 794 | + TimeOperations.add(presentTime(), dt).toString()); |
| 795 | } else { |
| 796 | sendTraceNote("holds " + getQuotedName() + "for " |
| 797 | + dt.toString() + " until " |
| 798 | + TimeOperations.add(presentTime(), dt).toString()); |
| 799 | } |
| 800 | skipTraceNote(); // skip passivate message |
| 801 | } |
| 802 | |
| 803 | // schedule to be reactivated in dt |
| 804 | getModel().getExperiment().getScheduler().schedule(this, null, dt); |
| 805 | |
| 806 | if (currentlySendDebugNotes()) { |
| 807 | sendDebugNote("holds on EventList<br>" |
| 808 | + getModel().getExperiment().getScheduler().toString()); |
| 809 | } |
| 810 | |
| 811 | // hand control over to scheduler only if this is |
| 812 | // a running thread of SimProcess |
| 813 | passivate(); |
| 814 | } |
| 815 | |
| 816 | /** |
| 817 | * Passivates a sim-process until the given point in simulation time. The |
| 818 | * simthread of this SimProcess is put into a lock and the scheduler, resp. |
| 819 | * the experiment's main thread is released from its block and continues |
| 820 | * with the next event-note to be processed. |
| 821 | * |
| 822 | * @param until |
| 823 | * TimeInstant : The point in simulation time when the |
| 824 | * SimProcess' passivation ends. |
| 825 | * |
| 826 | */ |
| 827 | public void hold(TimeInstant until) { |
| 828 | if ((until == null)) { |
| 829 | sendWarning("Can't schedule SimProcess! Command ignored.", |
| 830 | "SimProcess : " + getName() |
| 831 | + " Method: void hold(TimeInstant until)", |
| 832 | "The TimeInstant given as parameter is a null reference.", |
| 833 | "Be sure to have a valid TimeInstant reference before calling this method."); |
| 834 | return; // no proper parameter |
| 835 | } |
| 836 | |
| 837 | if (isBlocked()) { |
| 838 | sendWarning( |
| 839 | "Can't activate SimProcess! Command ignored.", |
| 840 | "SimProcess : " + getName() |
| 841 | + " Method: hold(TimeInstant until)", |
| 842 | "The sim-process to be activated is blocked inside " |
| 843 | + "a higher level synchronization object.", |
| 844 | "Simprocesses waiting inside higher synchronization " |
| 845 | + "constructs can not be set to be activated by other " |
| 846 | + "SimProcesses or events!"); |
| 847 | return; // is blocked in some synch construction |
| 848 | } |
| 849 | |
| 850 | if (isScheduled()) { |
| 851 | sendWarning("Can't schedule SimProcess! Command ignored.", |
| 852 | "SimProcess : " + getName() |
| 853 | + " Method: void hold(TimeInstant until)", |
| 854 | "The sim-process to be scheduled is already scheduled.", |
| 855 | "Use method reActivate(TimeInstant when) to shift the sim-process " |
| 856 | + "to be scheduled at some other point of time."); |
| 857 | return; // was already scheduled |
| 858 | } |
| 859 | |
| 860 | if (TimeInstant.isBefore(until, presentTime())) { |
| 861 | sendWarning("Can't schedule SimProcess! Command ignored.", |
| 862 | "SimProcess : " + getName() |
| 863 | + " Method: void hold(TimeInstant until)", |
| 864 | "The instant given is in the past.", |
| 865 | "To hold a sim-process, use a TimeInstant no earlier than the present time. " |
| 866 | + "The present time can be obtained using the " |
| 867 | + "presentTime() method."); |
| 868 | return; // do not hold |
| 869 | } |
| 870 | |
| 871 | if (currentlySendTraceNotes()) { |
| 872 | if (this == currentSimProcess()) { |
| 873 | sendTraceNote("holds until " + until.toString()); |
| 874 | } else { |
| 875 | sendTraceNote("holds " + getQuotedName() + "until " |
| 876 | + until.toString()); |
| 877 | } |
| 878 | skipTraceNote(); // skip passivate message |
| 879 | } |
| 880 | |
| 881 | // schedule to be reactivated at the point of simulation time "until" |
| 882 | getModel().getExperiment().getScheduler().schedule(this, null, until); |
| 883 | |
| 884 | if (currentlySendDebugNotes()) { |
| 885 | sendDebugNote("holds on EventList<br>" |
| 886 | + getModel().getExperiment().getScheduler().toString()); |
| 887 | } |
| 888 | |
| 889 | // hand control over to scheduler only if this is |
| 890 | // a running thread of SimProcess |
| 891 | passivate(); |
| 892 | } |
| 893 | |
| 894 | /** |
| 895 | * @deprecated Replaced by hold(TimeSpan dt). Passivates a sim-process for |
| 896 | * the time given. The simthread of this SimProcess is put into |
| 897 | * a lock and the scheduler, resp. the experiment's main thread |
| 898 | * is released from its block and continues with the next |
| 899 | * EventNote to be processed. |
| 900 | * |
| 901 | * @param dt |
| 902 | * desmoj.SimTime : The duration of the sim-process' passivation |
| 903 | */ |
| 904 | @Deprecated |
| 905 | public void hold(SimTime dt) { |
| 906 | hold(SimTime.toTimeSpan(dt)); |
| 907 | |
| 908 | } |
| 909 | |
| 910 | /** |
| 911 | * Interrupts the sim-process setting the given InterruptCode as the reason |
| 912 | * for the interruption. Blocked, terminated or already interrupted |
| 913 | * Sim-processes can not be interrupted. In this case a warning message will |
| 914 | * be produced and the interrupt will be ignord. If the sim-process is |
| 915 | * cooperating as a slave the interrupt will be passed to the master. |
| 916 | * |
| 917 | * @param interruptReason |
| 918 | * desmoj.InterruptCode |
| 919 | */ |
| 920 | public void interrupt(InterruptCode interruptReason) { |
| 921 | |
| 922 | if (interruptReason == null) { |
| 923 | sendWarning( |
| 924 | "Can't interrupt SimProcess! Command ignored", |
| 925 | "SimProcess : " + getName() + " Method: void " |
| 926 | + "interrupt(InterruptCode interruptReason)", |
| 927 | "The InterruptCode given as parameter is a null reference.", |
| 928 | "Be sure to have a valid InterruptCode reference before " |
| 929 | + "calling this method."); |
| 930 | return; // no proper parameter |
| 931 | } |
| 932 | |
| 933 | // if the sim-process is cooperating as a slave |
| 934 | if (_master != null) { |
| 935 | if (currentlySendTraceNotes()) { |
| 936 | sendTraceNote("interrupts '" + this.getName() + "' , who ..."); |
| 937 | } |
| 938 | |
| 939 | // interrupt the master, too. (with the same reason/InterruptCode) |
| 940 | _master.interrupt(interruptReason); |
| 941 | } |
| 942 | |
| 943 | if (isBlocked()) { |
| 944 | sendWarning("Can't interrupt SimProcess! Command ignored", |
| 945 | "SimProcess : " + getName() + " Method: void " |
| 946 | + "interrupt(InterruptCode interruptReason)", |
| 947 | "Blocked SimProcesses can not be interrupted.", |
| 948 | "You can check if a sim-process is blocked using method " |
| 949 | + "isBlocked()."); |
| 950 | return; // is Blocked |
| 951 | } |
| 952 | |
| 953 | if (isTerminated()) { |
| 954 | sendWarning("Can't interrupt SimProcess! Command ignored", |
| 955 | "SimProcess : " + getName() + " Method: void " |
| 956 | + "interrupt(InterruptCode interruptReason)", |
| 957 | "Terminated SimProcesses can not be interrupted.", |
| 958 | "You can check if a sim-process is terminated using method " |
| 959 | + "isTerminated()."); |
| 960 | return; // is Terminated |
| 961 | } |
| 962 | |
| 963 | if (_irqCode != null) { |
| 964 | sendWarning( |
| 965 | "Can't interrupt SimProcess! Command ignored", |
| 966 | "SimProcess : " + getName() + " Method: void " |
| 967 | + "interrupt(InterruptCode interruptReason)", |
| 968 | "SimProcesses has already a InterruptCode set :" |
| 969 | + _irqCode.getName(), |
| 970 | "SimProcesses may only be interrupted if no other " |
| 971 | + "InterruptCode is set on that SimProcess. You can check " |
| 972 | + "on that using mehtod getInterruptCode, which must return " |
| 973 | + "null if no other InterruptCode is set."); |
| 974 | return; // is Interrupted |
| 975 | } |
| 976 | |
| 977 | if (this == currentSimProcess()) { |
| 978 | sendWarning("Can't interrupt SimProcess! Command ignored", |
| 979 | "SimProcess : " + getName() + " Method: void " |
| 980 | + "interrupt(InterruptCode interruptReason)", |
| 981 | "SimProcess is the currently active SimProcess.", |
| 982 | "Make sure not to interrupt the currently active " |
| 983 | + "SimProcess."); |
| 984 | return; // is currentSimProcess |
| 985 | } |
| 986 | |
| 987 | if (currentlySendTraceNotes()) { |
| 988 | sendTraceNote("interrupts '" + this.getName() + "', with reason " |
| 989 | + interruptReason.getName() + " [" |
| 990 | + interruptReason.getCodeNumber() + "]"); |
| 991 | } |
| 992 | |
| 993 | _irqCode = interruptReason; // set the InterruptCode |
| 994 | |
| 995 | // if on EventList, remove first ... |
| 996 | if (isScheduled()) { |
| 997 | skipTraceNote(2); |
| 998 | cancel(); |
| 999 | } else { |
| 1000 | skipTraceNote(); |
| 1001 | } |
| 1002 | // ... then activate after the one interrupting this SimProcess |
| 1003 | activateAfter(current()); |
| 1004 | } |
| 1005 | |
| 1006 | /** |
| 1007 | * Returns the current block-status of the sim-process. If a sim-process is |
| 1008 | * blocked, it is waiting inside a queue or synchronization block for it's |
| 1009 | * release. |
| 1010 | * |
| 1011 | * @return boolean : Is <code>true</code> if SimProcess is blocked, |
| 1012 | * <code>false</code> otherwise |
| 1013 | */ |
| 1014 | public boolean isBlocked() { |
| 1015 | |
| 1016 | return _isBlocked; |
| 1017 | |
| 1018 | } |
| 1019 | |
| 1020 | /** |
| 1021 | * Returns the current component status of this SimProcess. If a sim-process |
| 1022 | * is a component of a <code>ComplexSimProcess</code> it is blocked and |
| 1023 | * passivated. It exists only within the <code>ComplexSimProcess</code>; |
| 1024 | * it's own lifeCycle is stopped and will only be activated again when it is |
| 1025 | * removed from the <code>ComplexSimProcess</code>. |
| 1026 | * |
| 1027 | * @return boolean :<code>true</code> if and only if this SimProcess is a |
| 1028 | * component (part of) a <code>ComplexSimProcess</code>; |
| 1029 | * <code>false</code> otherwise. |
| 1030 | * @author Soenke Claassen |
| 1031 | */ |
| 1032 | public boolean isComponent() { |
| 1033 | |
| 1034 | return (_supervisor != null); |
| 1035 | } |
| 1036 | |
| 1037 | /** |
| 1038 | * Returns the current interrupt-status of this SimProcess. If a sim-process |
| 1039 | * is interrupted, it should deal with the interrupt and then call the |
| 1040 | * <code>clearInterruptCode()</code> -method. |
| 1041 | * |
| 1042 | * @return boolean : Is <code>true</code> if this SimProcess is interrupted, |
| 1043 | * <code>false</code> otherwise. |
| 1044 | * @author Soenke Claassen |
| 1045 | */ |
| 1046 | public boolean isInterrupted() { |
| 1047 | return (_irqCode != null); |
| 1048 | } |
| 1049 | |
| 1050 | /** |
| 1051 | * Returns the current running status of the sim-process. If a sim-process is |
| 1052 | * not ready, it has already finished its <code>lifeCycle()</code> method |
| 1053 | * and can not further be used as a sim-process. A terminated SimProcess can |
| 1054 | * still be used like any other Entity which it is derived from. |
| 1055 | * |
| 1056 | * @return boolean : Is <code>true</code> if the sim-process is terminated, |
| 1057 | * <code>false</code> otherwise |
| 1058 | * @see Entity |
| 1059 | */ |
| 1060 | boolean isReady() { |
| 1061 | |
| 1062 | return _isRunning; |
| 1063 | |
| 1064 | } |
| 1065 | |
| 1066 | /** |
| 1067 | * Returns the current status of the sim-process. If a sim-process is |
| 1068 | * terminated, it has already finished its <code>lifeCycle()</code> method |
| 1069 | * and can not further be used as a sim-process. A terminated SimProcess can |
| 1070 | * still be used like any other Entity which it is derived from. |
| 1071 | * |
| 1072 | * @return boolean : Is <code>true</code> if the sim-process is terminated, |
| 1073 | * <code>false</code> otherwise |
| 1074 | * @see Entity |
| 1075 | */ |
| 1076 | public boolean isTerminated() { |
| 1077 | |
| 1078 | return _isTerminated; |
| 1079 | |
| 1080 | } |
| 1081 | |
| 1082 | /** |
| 1083 | * Override this method in a subclass of SimProcess to implement that |
| 1084 | * Sim-process' specific behaviour. This method starts after a sim-process has |
| 1085 | * been created and activated by the scheduler. |
| 1086 | */ |
| 1087 | public abstract void lifeCycle(); |
| 1088 | |
| 1089 | /** |
| 1090 | * Makes the sim-process obtain an array of resources and store them for |
| 1091 | * further usage. |
| 1092 | * |
| 1093 | * @param obtainedResources |
| 1094 | * Resource[] : The array of resources obtained. |
| 1095 | * |
| 1096 | * @author Soenke Claassen |
| 1097 | */ |
| 1098 | public void obtainResources(Resource[] obtainedResources) { |
| 1099 | if (obtainedResources.length <= 0) { |
| 1100 | sendWarning("Attempt to obtain resources, but got none! Command " |
| 1101 | + "ignored!", "SimProcess : " + getName() |
| 1102 | + " Method: void obtain" |
| 1103 | + "Resources(Resource[] obtainedResources)", |
| 1104 | "The array of obtained resources is empty.", |
| 1105 | "Make sure to obtain at least one resource. Check if the " |
| 1106 | + "resource pool can provide any resources."); |
| 1107 | return; // parameter contains nothing |
| 1108 | } |
| 1109 | |
| 1110 | // put all the obtained resources in the Vector of used resources |
| 1111 | for (int i = 0; i < obtainedResources.length; i++) { |
| 1112 | _usedResources.addElement(obtainedResources[i]); |
| 1113 | } |
| 1114 | |
| 1115 | // for debugging purposes |
| 1116 | if (currentlySendDebugNotes()) { |
| 1117 | // make a string of all resources used by this SimProcess |
| 1118 | String t = "uses: "; |
| 1119 | |
| 1120 | for (Enumeration<Resource> e = _usedResources.elements(); e.hasMoreElements();) { |
| 1121 | t += "<br>" + (e.nextElement()).getName(); |
| 1122 | } |
| 1123 | |
| 1124 | sendDebugNote(t); |
| 1125 | } |
| 1126 | } |
| 1127 | |
| 1128 | /** |
| 1129 | * Passivates the sim-process for an indefinite time. This method must be |
| 1130 | * called by the sim-process' own Thread only. The sim-process can only be |
| 1131 | * reactivated by another SimProcess or Entity. |
| 1132 | */ |
| 1133 | public synchronized void passivate() { |
| 1134 | |
| 1135 | if (currentlySendTraceNotes()) { |
| 1136 | if (this == currentSimProcess()) { |
| 1137 | sendTraceNote("passivates"); |
| 1138 | } else { |
| 1139 | sendTraceNote("passivates " + getQuotedName()); |
| 1140 | } |
| 1141 | } |
| 1142 | |
| 1143 | notify(); // frees the scheduler after wait() |
| 1144 | |
| 1145 | try { |
| 1146 | wait(); |
| 1147 | } catch (InterruptedException ioEx) { |
| 1148 | // create eror message |
| 1149 | ErrorMessage errmsg = new ErrorMessage(getModel(), |
| 1150 | "Simulation stopped!", |
| 1151 | "Exception thrown by Java VM" + ioEx, |
| 1152 | "Thread conflict assumed.", "Check Java VM.", presentTime()); |
| 1153 | // throw it back to Experiment's start routine |
| 1154 | throw (new desmoj.core.exception.DESMOJException(errmsg)); |
| 1155 | } |
| 1156 | |
| 1157 | // if simulation is not running, throw SimFinishedException to stop |
| 1158 | // thread |
| 1159 | if (getModel().getExperiment().isAborted()) { |
| 1160 | throw (new desmoj.core.exception.SimFinishedException(getModel(), |
| 1161 | getName(), presentTime())); |
| 1162 | } |
| 1163 | |
| 1164 | } |
| 1165 | |
| 1166 | /** |
| 1167 | * The current (master) process is calling this method (within |
| 1168 | * <code>TransportJunction.cooperate()</code>) on the slave process to make |
| 1169 | * him prepare for the transportation. After the transport is finished the |
| 1170 | * master is still active and after him the slave will be activated. |
| 1171 | * |
| 1172 | * @author Soenke Claassen |
| 1173 | */ |
| 1174 | public void prepareTransport() { |
| 1175 | // this is the slave and current the master |
| 1176 | |
| 1177 | // check if this slave already has a master |
| 1178 | if (this._master != null) { |
| 1179 | sendWarning( |
| 1180 | "Slaves can not be transported from more than one master at " |
| 1181 | + "a time! The attempted transport is ignored.", |
| 1182 | "SimProcess : " + getName() |
| 1183 | + " Method: prepareTransport () ", |
| 1184 | "This slave process is already transported by another " |
| 1185 | + "master: " + _master.getName(), |
| 1186 | "Be sure to have finished one transportation before starting " |
| 1187 | + "the next one."); |
| 1188 | return; // this process has a master already |
| 1189 | } |
| 1190 | |
| 1191 | // check if this slave is not terminated yet |
| 1192 | if (this._isTerminated) { |
| 1193 | sendWarning("Attempt to transport a terminated slave process! " |
| 1194 | + "The attempted transport is ignored.", "SimProcess : " |
| 1195 | + getName() + " Method: prepareTransport () ", |
| 1196 | "This slave process is already terminated.", |
| 1197 | "Make sure not to transport terminated processes."); |
| 1198 | return; // this process is already terminated |
| 1199 | } |
| 1200 | |
| 1201 | // check the master |
| 1202 | SimProcess currentMaster = currentSimProcess(); // the current master |
| 1203 | // process |
| 1204 | if (currentMaster == null) // if currentMaster is only a null pointer |
| 1205 | { |
| 1206 | sendWarning( |
| 1207 | "A non existing process is trying to transport other " |
| 1208 | + "processes as a master! The attempted transport is ignored!", |
| 1209 | "SimProcess : " + getName() |
| 1210 | + " Method: prepareTransport ()", |
| 1211 | "The master process is only a null pointer.", |
| 1212 | "Make sure that only real SimProcesses are transporting other " |
| 1213 | + "processes. "); |
| 1214 | return; // the currentMaster process is only a null pointer |
| 1215 | } |
| 1216 | |
| 1217 | if (!isModelCompatible(currentMaster)) { |
| 1218 | sendWarning( |
| 1219 | "The given master SimProcess object does not " |
| 1220 | + "belong to this model. The attempted transport is ignored!", |
| 1221 | "SimProcess : " + getName() |
| 1222 | + " Method: prepareTransport ()", |
| 1223 | "The master SimProcess is not modelcompatible.", |
| 1224 | "Make sure that the processes all belong to this model."); |
| 1225 | return; // the currentMaster is not modelcompatible |
| 1226 | } |
| 1227 | |
| 1228 | // the slave must be waiting in a WaitQueue |
| 1229 | if (_slaveWaitQueue == null) { |
| 1230 | sendWarning( |
| 1231 | "Attempt to transport a slave process, that is not " |
| 1232 | + "waiting in a TransportJunction. The attempted transport is ignored!", |
| 1233 | "SimProcess : " + getName() |
| 1234 | + " Method: prepareTransport ()", |
| 1235 | "Slave processes must wait in a TransportJunction before they can be " |
| 1236 | + "transported.", |
| 1237 | "Make sure that the slave processes are waiting in a " |
| 1238 | + "TransportJunction."); |
| 1239 | return; // the slave is not waiting in a queue |
| 1240 | } |
| 1241 | |
| 1242 | // now prepare for the real cooperation |
| 1243 | this._master = currentMaster; // set the master for this slave process |
| 1244 | |
| 1245 | // leave a note in the trace |
| 1246 | if (_master.currentlySendTraceNotes()) { |
| 1247 | // trace note for a transport without any special conditions |
| 1248 | sendTraceNote("transports " + this.getQuotedName() + " from " |
| 1249 | + _slaveWaitQueue.getQuotedName()); |
| 1250 | } |
| 1251 | |
| 1252 | // get this slave out of his slaveWaitQueue |
| 1253 | _slaveWaitQueue.remove(this); |
| 1254 | // this slave process is not waiting in any slaveWaitingQueue anymore |
| 1255 | _slaveWaitQueue = null; |
| 1256 | // and therefore this slave process is not blocked anymore |
| 1257 | this._isBlocked = false; |
| 1258 | |
| 1259 | } |
| 1260 | |
| 1261 | /** |
| 1262 | * Re-schedules the sim-process to be activated at the given TimeSpan offset |
| 1263 | * to the current simulation time. The Simprocess has already been scheduled |
| 1264 | * but is now supposed to be reactivated at some other point of simulation |
| 1265 | * time. |
| 1266 | * |
| 1267 | * @param dt |
| 1268 | * TimeSpan : The offset to the current simulation time that this |
| 1269 | * SimProcess is due to be re-activated |
| 1270 | */ |
| 1271 | public void reActivate(TimeSpan dt) { |
| 1272 | if (isBlocked()) { |
| 1273 | sendWarning( |
| 1274 | "Can't reactivate SimProcess! Command ignored.", |
| 1275 | "SimProcess : " + getName() |
| 1276 | + " Method: reActivate(TimeSpan dt)", |
| 1277 | "The sim-process to be activated is blocked inside " |
| 1278 | + "a higher level synchronization object.", |
| 1279 | "Simprocesses waiting inside higher synchronization " |
| 1280 | + "constructs can not be activated by other SimProcesses or " |
| 1281 | + "events!"); |
| 1282 | return; // is blocked in some synch construction |
| 1283 | } |
| 1284 | |
| 1285 | if (!isScheduled()) { |
| 1286 | sendWarning("Can't reactivate SimProcess! Command ignored.", |
| 1287 | "SimProcess : " + getName() |
| 1288 | + " Method: reActivate(TimeSpan dt)", |
| 1289 | "The sim-process to be reactivated is not scheduled.", |
| 1290 | "Use method activate(TimeSpan dt) to activate a sim-process" |
| 1291 | + "that is not scheduled yet."); |
| 1292 | return; // was already scheduled |
| 1293 | } |
| 1294 | |
| 1295 | if (dt == null) { |
| 1296 | sendWarning( |
| 1297 | "Can't reactivate SimProcess! Command ignored.", |
| 1298 | "SimProcess : " + getName() + " Method: void reActivate" |
| 1299 | + "(TimeSpan dt)", |
| 1300 | "The simulation time given as parameter is a null reference", |
| 1301 | "Be sure to have a valid simulation time reference before " |
| 1302 | + "calling this method"); |
| 1303 | return; // no proper parameter |
| 1304 | } |
| 1305 | |
| 1306 | if (currentlySendTraceNotes()) { |
| 1307 | if (this == currentSimProcess()) { |
| 1308 | if (dt == TimeSpan.ZERO) |
| 1309 | sendTraceNote("reactivates itself now"); |
| 1310 | else |
| 1311 | sendTraceNote("reactivates itself at " |
| 1312 | + TimeOperations.add(presentTime(), dt)); |
| 1313 | } else { |
| 1314 | if (dt == TimeSpan.ZERO) |
| 1315 | sendTraceNote("reactivates " + getQuotedName() + " now"); |
| 1316 | else |
| 1317 | sendTraceNote("reactivates " + getQuotedName() + " at " |
| 1318 | + TimeOperations.add(presentTime(), dt)); |
| 1319 | } |
| 1320 | } |
| 1321 | |
| 1322 | getModel().getExperiment().getScheduler().reSchedule(this, dt); |
| 1323 | |
| 1324 | resetMaster(); // if reActivate(TimeSpan dt) is called for this |
| 1325 | // SimProcess, |
| 1326 | // there is no Master anymore controlling it. |
| 1327 | } |
| 1328 | |
| 1329 | /** |
| 1330 | * Gets the InterruptCode from the master and resets the master to |
| 1331 | * <code>null</code>. |
| 1332 | * |
| 1333 | * @author Soenke Claassen |
| 1334 | */ |
| 1335 | public void resetMaster() { |
| 1336 | if (this._master != null) { |
| 1337 | _irqCode = _master.getInterruptCode(); |
| 1338 | } |
| 1339 | |
| 1340 | this._master = null; |
| 1341 | } |
| 1342 | |
| 1343 | /** |
| 1344 | * Makes the sim-process return all resources it holds at the moment to all |
| 1345 | * the different Res pools it is holding resources from. This is useful in |
| 1346 | * situations the Simprocess is about to terminate. |
| 1347 | * |
| 1348 | * @author Soenke Claassen |
| 1349 | */ |
| 1350 | public void returnAllResources() { |
| 1351 | // check if something can be returned |
| 1352 | if (_usedResources.isEmpty()) { |
| 1353 | sendWarning( |
| 1354 | "Attempt to return all resources, but the " |
| 1355 | + "SimProcess does not hold any resources! Command ignored!", |
| 1356 | "SimProcess : " + getName() |
| 1357 | + " Method: returnAllResources()", |
| 1358 | "If the sim-process does not hold any resources it is " |
| 1359 | + "impossible to return any.", |
| 1360 | "Make sure that the sim-process holds resources that " |
| 1361 | + "should be returned!"); |
| 1362 | return; // return nothing, go to where you came from |
| 1363 | } |
| 1364 | |
| 1365 | // repeat while vector of usedResources is not empty |
| 1366 | while (!_usedResources.isEmpty()) { |
| 1367 | // get the first resource and check the Res pool it belongs to |
| 1368 | Res crntResPool = ((Resource) _usedResources.firstElement()) |
| 1369 | .getResPool(); |
| 1370 | |
| 1371 | // counter how many resources of that res pool are used |
| 1372 | int n = 1; |
| 1373 | |
| 1374 | // search the whole vector of usedResources for resources of the |
| 1375 | // current |
| 1376 | // Res pool |
| 1377 | for (int i = 1; i < _usedResources.size(); i++) { |
| 1378 | // is the resource of the desired Res pool? |
| 1379 | if (((Resource) _usedResources.elementAt(i)).getResPool() == crntResPool) { |
| 1380 | n++; // increase the counter |
| 1381 | } |
| 1382 | } // end for-loop |
| 1383 | |
| 1384 | // make the array to store the resources which will be returned |
| 1385 | Resource[] returningRes = new Resource[n]; |
| 1386 | |
| 1387 | // counter for the index of the array |
| 1388 | int k = 0; |
| 1389 | |
| 1390 | // collect all the resources from the Vector of usedResources |
| 1391 | for (int j = 0; j < _usedResources.size(); j++) { |
| 1392 | // is the resource of the desired Res pool? |
| 1393 | if ((_usedResources.elementAt(j)).getResPool() == crntResPool) { |
| 1394 | // put res in array |
| 1395 | returningRes[k] = _usedResources.elementAt(j); |
| 1396 | k++; // increase counter of array |
| 1397 | } |
| 1398 | if (k == n) // array is full |
| 1399 | break; // stop the for-loop |
| 1400 | } |
| 1401 | |
| 1402 | // return the array of resources to the Res pool they belong to |
| 1403 | crntResPool.takeBack(returningRes); |
| 1404 | |
| 1405 | // remove the returned resources from the vector of usedResources |
| 1406 | for (int m = 0; m < n; m++) // go through the array of |
| 1407 | // returningResources |
| 1408 | { |
| 1409 | // remove each resource that is in the array of |
| 1410 | // returningResources |
| 1411 | _usedResources.removeElement(returningRes[m]); |
| 1412 | } |
| 1413 | |
| 1414 | } // end while |
| 1415 | |
| 1416 | // for debugging purposes |
| 1417 | if (currentlySendDebugNotes()) { |
| 1418 | // make a string including all elements of the vector usedResources |
| 1419 | String s = "All resources returned! Contents of vector usedResources: "; |
| 1420 | |
| 1421 | if (_usedResources.isEmpty()) // anything left ? |
| 1422 | { |
| 1423 | s += "<br>none"; |
| 1424 | } |
| 1425 | |
| 1426 | for (Enumeration<Resource> e = _usedResources.elements(); e.hasMoreElements();) { |
| 1427 | s += e.nextElement(); |
| 1428 | } |
| 1429 | |
| 1430 | // send a debugNote representing the state of the vector |
| 1431 | // usedResources |
| 1432 | sendDebugNote(s); |
| 1433 | } |
| 1434 | |
| 1435 | } // end method returnAllResources |
| 1436 | |
| 1437 | /** |
| 1438 | * Makes the sim-process return a certain number of resources of the given |
| 1439 | * resource pool. |
| 1440 | * |
| 1441 | * @param resPool |
| 1442 | * Res : The resource pool which resources will be returned. |
| 1443 | * @param n |
| 1444 | * int : The number of resources which will be returned. |
| 1445 | * @return Resource[] : the array containing the resources which will be |
| 1446 | * returned. |
| 1447 | * @author Soenke Claassen |
| 1448 | */ |
| 1449 | public Resource[] returnResources(Res resPool, int n) { |
| 1450 | // check if nothing should be returned |
| 1451 | if (n <= 0) { |
| 1452 | sendWarning( |
| 1453 | "Attempt to return no or a negative number of resources! " |
| 1454 | + " Command ignored!", "SimProcess : " + getName() |
| 1455 | + " Method: Resource[] " |
| 1456 | + "returnResources(Res resPool, int n)", |
| 1457 | "It makes no sense to return nothing or a negative number " |
| 1458 | + "of resources.", |
| 1459 | "Make sure to return at least one resource. Only resources " |
| 1460 | + "which have been obtained once can be returned!"); |
| 1461 | return null; // return nothing, go to where you came from |
| 1462 | } |
| 1463 | |
| 1464 | // check if nothing can be returned |
| 1465 | if (_usedResources.isEmpty()) { |
| 1466 | sendWarning( |
| 1467 | "Attempt to return a number of resources, but the " |
| 1468 | + "SimProcess does not hold any resources! Command ignored!", |
| 1469 | "SimProcess : " + getName() + " Method: Resource[] " |
| 1470 | + "returnResources(Res resPool, int n)", |
| 1471 | "If the sim-process does not hold any resources it is " |
| 1472 | + "impossible to return any.", |
| 1473 | "Make sure that the sim-process holds the resources that " |
| 1474 | + "should be returned!"); |
| 1475 | return null; // return nothing, go to where you came from |
| 1476 | } |
| 1477 | |
| 1478 | // make the array to store the resources which will be returned |
| 1479 | Resource[] returningRes = new Resource[n]; |
| 1480 | |
| 1481 | // counter for the index of the array |
| 1482 | int j = 0; |
| 1483 | |
| 1484 | // collect all the resources from the Vector of usedResources |
| 1485 | for (int i = 0; i < _usedResources.size(); i++) { |
| 1486 | // is the resource of the desired kind? |
| 1487 | if ((_usedResources.elementAt(i)).getResPool() == resPool) { |
| 1488 | // put res in array |
| 1489 | returningRes[j] = _usedResources.elementAt(i); |
| 1490 | j++; // increase counter of array |
| 1491 | } |
| 1492 | if (j == n) // array is full |
| 1493 | break; // stop the for-loop |
| 1494 | } |
| 1495 | |
| 1496 | // for debugging: make a string of all returning resources |
| 1497 | String s = "<b>returns</b> to Res '" + resPool.getName() + "' : "; |
| 1498 | |
| 1499 | // remove the returning resources from the vector of usedResources |
| 1500 | for (int m = 0; m < j; m++) // go through the array of |
| 1501 | // returningResources |
| 1502 | { |
| 1503 | // remove each resource that is in the array of returningResources |
| 1504 | _usedResources.removeElement(returningRes[m]); |
| 1505 | |
| 1506 | // add them to string of returning resources |
| 1507 | s += "<br>" + returningRes[m].getName(); |
| 1508 | } |
| 1509 | |
| 1510 | if (j < n) // array is not full |
| 1511 | { |
| 1512 | sendWarning("Attempt to return " + n |
| 1513 | + " resources to the Res pool. " |
| 1514 | + "But the sim-process holds only" + j |
| 1515 | + "resources of that " + "kind. The " + j |
| 1516 | + "resources will be returned.", "SimProcess : " |
| 1517 | + getName() + " Method: Resource[] " |
| 1518 | + "returnResources(Res resPool, int n)", |
| 1519 | "The sim-process can not return " + n + " resources, " |
| 1520 | + "because it holds only" + j + "resources.", |
| 1521 | "Make sure that the sim-process holds at least as many " |
| 1522 | + "resources as it should return."); |
| 1523 | } |
| 1524 | |
| 1525 | // for debugging purposes |
| 1526 | if (currentlySendDebugNotes()) { |
| 1527 | sendDebugNote(s); |
| 1528 | |
| 1529 | // make a string of all resources still held by this SimProcess |
| 1530 | String t = "still holds: "; |
| 1531 | |
| 1532 | if (_usedResources.isEmpty()) // anything left ? |
| 1533 | { |
| 1534 | t += "<br>none"; |
| 1535 | } |
| 1536 | |
| 1537 | for (Enumeration<Resource> e = _usedResources.elements(); e.hasMoreElements();) { |
| 1538 | t += "<br>" + (e.nextElement()).getName(); |
| 1539 | } |
| 1540 | |
| 1541 | sendDebugNote(t); |
| 1542 | } |
| 1543 | |
| 1544 | return returningRes; // return the array of resources |
| 1545 | } |
| 1546 | |
| 1547 | /** |
| 1548 | * Sets the sim-process' blocked status to the boolean value given. This is |
| 1549 | * necessary for some operations in conjunction with some synchronization |
| 1550 | * classes. |
| 1551 | * |
| 1552 | * @param blockStatus |
| 1553 | * boolean : The new value for the blocked status |
| 1554 | */ |
| 1555 | public void setBlocked(boolean blockStatus) { |
| 1556 | |
| 1557 | _isBlocked = blockStatus; |
| 1558 | |
| 1559 | } |
| 1560 | |
| 1561 | /**Sets the realTime deadline for this SimProcess (in nanoseconds). In case of a |
| 1562 | * real-time execution (i. e. the execution speed rate is set to a positive |
| 1563 | * value) the Scheduler will produce a warning message if a deadline is |
| 1564 | * missed. |
| 1565 | * |
| 1566 | * @param realTimeConstraint the realTimeConstraint in nanoseconds to set |
| 1567 | */ |
| 1568 | public void setRealTimeConstraint(long realTimeConstraint) { |
| 1569 | this._realTimeConstraint = realTimeConstraint; |
| 1570 | } |
| 1571 | |
| 1572 | /** |
| 1573 | * Sets the sim-process' running status to the boolean value given. This is |
| 1574 | * necessary for some operations in conjunction with synchronization |
| 1575 | * classes. |
| 1576 | * |
| 1577 | * @param runStatus |
| 1578 | * boolean : The new value for the running status |
| 1579 | */ |
| 1580 | void setRunning(boolean runStatus) { |
| 1581 | |
| 1582 | _isRunning = runStatus; |
| 1583 | |
| 1584 | } |
| 1585 | |
| 1586 | /** |
| 1587 | * Sets the sim-process' slaveWaitQueue variable to the ProcessQueue in which |
| 1588 | * this SimProcess is waiting as a slave to cooperate with a master. |
| 1589 | * |
| 1590 | * @param slvWaitQueue |
| 1591 | * ProcessQueue : The waiting-queue in which this SimProcess is |
| 1592 | * waiting as a slave to cooperate with a master. |
| 1593 | * @author Soenke Claassen |
| 1594 | */ |
| 1595 | public void setSlaveWaitQueue(ProcessQueue<? extends SimProcess> slvWaitQueue) { |
| 1596 | _slaveWaitQueue = slvWaitQueue; |
| 1597 | } |
| 1598 | |
| 1599 | /** |
| 1600 | * Sets the supervising <code>ComplexSimProcess</code> this SimProcess is |
| 1601 | * contained in. Setting it to <code>null</code> indicates that this |
| 1602 | * Sim-process is not contained in any <code>ComplexSimProcess</code> |
| 1603 | * (anymore). |
| 1604 | * |
| 1605 | * @param complexProcess |
| 1606 | * desmoj.ComplexSimProcess : The <code>ComplexSimProcess</code> |
| 1607 | * which serves as a container for this SimProcess. |
| 1608 | * @author Soenke Claassen |
| 1609 | */ |
| 1610 | protected void setSupervisor(ComplexSimProcess complexProcess) { |
| 1611 | |
| 1612 | this._supervisor = complexProcess; |
| 1613 | } |
| 1614 | |
| 1615 | /** |
| 1616 | * Sets the attribute indicating that this SimProcess' simthread has |
| 1617 | * finished to the given value. This method is used by class |
| 1618 | * <code>SimThread<code> only. |
| 1619 | * |
| 1620 | * @param termValue |
| 1621 | * boolean : The new value for the attribute indicating the |
| 1622 | * SimThread's end |
| 1623 | */ |
| 1624 | void setTerminated(boolean termValue) { |
| 1625 | |
| 1626 | _isTerminated = termValue; // Hasta la vista, baby! |
| 1627 | |
| 1628 | } |
| 1629 | |
| 1630 | /** |
| 1631 | * Starts the simthread associated with this SimProcess. This is method must |
| 1632 | * be called the first time a sim-process is supposed to start processing its |
| 1633 | * <code>lifeCycle()</code> method. |
| 1634 | */ |
| 1635 | synchronized void start() { |
| 1636 | |
| 1637 | // setting this flag shows that the simthread is now ready to take over |
| 1638 | // control from the scheduler's thread |
| 1639 | _isRunning = true; |
| 1640 | |
| 1641 | // start thread and let it run into the block |
| 1642 | _myThread.start(); |
| 1643 | |
| 1644 | // put thread in to a wait for synchronization |
| 1645 | try { |
| 1646 | wait(); |
| 1647 | } catch (InterruptedException irqEx) { |
| 1648 | // create eror message |
| 1649 | ErrorMessage errmsg = new ErrorMessage(getModel(), |
| 1650 | "Simulation stopped!", "Exception thrown by Java VM" |
| 1651 | + irqEx, "Thread conflict assumed.", |
| 1652 | "Check Java VM.", presentTime()); |
| 1653 | // throw it back to Experiment's start routine |
| 1654 | throw (new desmoj.core.exception.DESMOJException(errmsg)); |
| 1655 | } |
| 1656 | |
| 1657 | // check if simulation has been stopped in between and throw SimFinished |
| 1658 | if (getModel().getExperiment().isAborted()) { |
| 1659 | throw (new desmoj.core.exception.SimFinishedException(getModel(), |
| 1660 | getName(), presentTime())); |
| 1661 | } |
| 1662 | } |
| 1663 | |
| 1664 | /** |
| 1665 | * As there is no generally appliciable means of cloning a SimProcess |
| 1666 | * (which would require cloning the execution state as well), this |
| 1667 | * method returns a </code>CloneNotSupportedException</code>. |
| 1668 | * |
| 1669 | * @return SimProcess : A copy of this process. |
| 1670 | */ |
| 1671 | protected SimProcess clone() throws CloneNotSupportedException { |
| 1672 | throw new CloneNotSupportedException(); |
| 1673 | } |
| 1674 | } // end class SimProcess |