1 |
| package org.jboss.cache.lock; |
2 |
| |
3 |
| import junit.framework.Test; |
4 |
| import junit.framework.TestCase; |
5 |
| import junit.framework.TestSuite; |
6 |
| import org.jboss.cache.misc.TestingUtil; |
7 |
| |
8 |
| import java.io.FileWriter; |
9 |
| import java.io.IOException; |
10 |
| import java.io.Writer; |
11 |
| import java.util.Vector; |
12 |
| import java.util.concurrent.TimeUnit; |
13 |
| import java.util.concurrent.locks.Lock; |
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| |
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| public class ReadWriteLockWithUpgradeTest extends TestCase |
31 |
| { |
32 |
| static final ReadWriteLockWithUpgrade lock_ = new ReadWriteLockWithUpgrade(); |
33 |
| static long SLEEP_MSECS = 500; |
34 |
| Vector lockResult = new Vector(); |
35 |
| int NO_MORE_OP = 0; |
36 |
| int INVOKE_READ = 1; |
37 |
| int INVOKE_WRITE = 2; |
38 |
| int INVOKE_UPGRADE = 3; |
39 |
| |
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11
| public ReadWriteLockWithUpgradeTest(String name)
|
41 |
| { |
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11
| super(name);
|
43 |
| } |
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| |
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| |
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0
| public static void main(String[] args) throws Exception
|
47 |
| { |
48 |
0
| log("\nBeginning ReadWriteLockWithUpgrade automated testing ...\n");
|
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| |
50 |
0
| junit.textui.TestRunner.run(suite());
|
51 |
| } |
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| |
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| |
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1
| public static Test suite()
|
55 |
| { |
56 |
1
| TestSuite suite = new TestSuite();
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| |
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1
| suite.addTestSuite(ReadWriteLockWithUpgradeTest.class);
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59 |
1
| return suite;
|
60 |
| } |
61 |
| |
62 |
11
| public void setUp()
|
63 |
| { |
64 |
11
| logX("\n");
|
65 |
11
| log("Setting up test case ...");
|
66 |
| } |
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| |
68 |
11
| public void tearDown()
|
69 |
| { |
70 |
11
| log("Tearing down test case ...");
|
71 |
| } |
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| |
73 |
127
| public static void log(String str)
|
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| { |
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| System.out.println(Thread.currentThread() + ": "
|
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| + java.util.Calendar.getInstance().getTime() + " : " + str); |
77 |
| } |
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| |
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| |
80 |
105
| public static void logX(String str)
|
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| { |
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105
| log(str);
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| |
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| } |
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0
| public static void logToFile(String str) throws IOException
|
91 |
| { |
92 |
0
| Writer out = new FileWriter("./RepeatableLogs.txt", true);
|
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0
| out.write(str);
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94 |
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| out.close();
|
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| } |
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147 |
12
| protected Thread readThread(final String caseNum, final String name,
|
148 |
| final long msecs, final long sleepSecs, |
149 |
| final String errMsg, final int secondOP) |
150 |
| { |
151 |
12
| return new Thread(name)
|
152 |
| { |
153 |
12
| public void run()
|
154 |
| { |
155 |
12
| Lock rlock = lock_.readLock();
|
156 |
12
| try
|
157 |
| { |
158 |
12
| if (!rlock.tryLock(msecs, TimeUnit.MILLISECONDS))
|
159 |
| { |
160 |
1
| logX(caseNum + "-" + name + " requesting read lock failed!\n");
|
161 |
1
| String str = caseNum + "-" + name + "-RL-0";
|
162 |
1
| postLockingResult(str);
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163 |
1
| return;
|
164 |
| } |
165 |
| |
166 |
11
| logX(caseNum + "-" + name + " requesting read lock succeeded!\n");
|
167 |
11
| String str = caseNum + "-" + name + "-RL-1";
|
168 |
11
| postLockingResult(str);
|
169 |
11
| TestingUtil.sleepThread(sleepSecs);
|
170 |
| |
171 |
11
| if (secondOP == INVOKE_READ)
|
172 |
| { |
173 |
0
| acquireReadLock(caseNum, name, msecs, errMsg);
|
174 |
| } |
175 |
11
| else if (secondOP == INVOKE_WRITE)
|
176 |
| { |
177 |
2
| acquireWriteLock(caseNum, name, msecs, errMsg);
|
178 |
| } |
179 |
9
| else if (secondOP == INVOKE_UPGRADE)
|
180 |
| { |
181 |
2
| acquireUpgradeLock(caseNum, name, msecs, errMsg);
|
182 |
| } |
183 |
| |
184 |
11
| rlock.unlock();
|
185 |
11
| logX(caseNum + "-" + name + " releasing read lock.\n");
|
186 |
| } |
187 |
| catch (Exception ex) |
188 |
| { |
189 |
| } |
190 |
| } |
191 |
| }; |
192 |
| } |
193 |
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201 |
4
| protected Thread writeThread(final String caseNum, final String name,
|
202 |
| final long msecs, final long sleepSecs, |
203 |
| final String errMsg, final int secondOP) |
204 |
| { |
205 |
4
| return new Thread(name)
|
206 |
| { |
207 |
4
| public void run()
|
208 |
| { |
209 |
4
| try
|
210 |
| { |
211 |
4
| Lock wlock = lock_.writeLock();
|
212 |
4
| if (!wlock.tryLock(msecs, TimeUnit.MILLISECONDS))
|
213 |
| { |
214 |
2
| logX(caseNum + "-" + name + " requesting write lock failed!\n");
|
215 |
2
| String str = caseNum + "-" + name + "-WL-0";
|
216 |
2
| postLockingResult(str);
|
217 |
2
| return;
|
218 |
| } |
219 |
| |
220 |
2
| logX(caseNum + "-" + name + " requesting write lock succeeded!\n");
|
221 |
2
| String str = caseNum + "-" + name + "-WL-1";
|
222 |
2
| postLockingResult(str);
|
223 |
2
| TestingUtil.sleepThread(sleepSecs);
|
224 |
| |
225 |
2
| if (secondOP == INVOKE_READ)
|
226 |
| { |
227 |
0
| acquireReadLock(caseNum, name, msecs, errMsg);
|
228 |
| } |
229 |
2
| else if (secondOP == INVOKE_WRITE)
|
230 |
| { |
231 |
0
| acquireWriteLock(caseNum, name, msecs, errMsg);
|
232 |
| } |
233 |
2
| else if (secondOP == INVOKE_UPGRADE)
|
234 |
| { |
235 |
0
| acquireUpgradeLock(caseNum, name, msecs, errMsg);
|
236 |
| } |
237 |
| |
238 |
2
| wlock.unlock();
|
239 |
2
| logX(caseNum + "-" + name + " releasing write lock.\n");
|
240 |
| } |
241 |
| catch (Exception ex) |
242 |
| { |
243 |
| } |
244 |
| } |
245 |
| }; |
246 |
| } |
247 |
| |
248 |
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250 |
| |
251 |
| |
252 |
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253 |
| |
254 |
| |
255 |
| |
256 |
1
| protected Thread upgradeThread(final String caseNum, final String name,
|
257 |
| final long msecs, final String errMsg) |
258 |
| { |
259 |
1
| return new Thread(name)
|
260 |
| { |
261 |
1
| public void run()
|
262 |
| { |
263 |
1
| try
|
264 |
| { |
265 |
1
| Lock rlock = lock_.readLock();
|
266 |
1
| Lock wlock = null;
|
267 |
1
| if (!rlock.tryLock(msecs, TimeUnit.MILLISECONDS))
|
268 |
| { |
269 |
0
| logX(caseNum + "-" + name + " requesting read lock failed!\n");
|
270 |
0
| String str = caseNum + "-" + name + "-RL-0";
|
271 |
0
| postLockingResult(str);
|
272 |
0
| return;
|
273 |
| } |
274 |
| |
275 |
1
| logX(caseNum + "-" + name + " requesting read lock succeeded (upgrade later)!\n");
|
276 |
1
| TestingUtil.sleepThread(SLEEP_MSECS / 2);
|
277 |
1
| String str = caseNum + "-" + name + "-UL-";
|
278 |
?
| if ((wlock = lock_.upgradeLockAttempt(msecs)) == null)
|
279 |
| { |
280 |
1
| logX(caseNum + "-" + name + " requesting upgrade lock failed!\n");
|
281 |
1
| str += "0";
|
282 |
| } |
283 |
| else |
284 |
| { |
285 |
0
| logX(caseNum + "-" + name + " requesting upgrade lock succeeded!\n");
|
286 |
0
| str += "1";
|
287 |
| } |
288 |
1
| postLockingResult(str);
|
289 |
| |
290 |
1
| TestingUtil.sleepThread(SLEEP_MSECS);
|
291 |
1
| if (wlock != null)
|
292 |
| { |
293 |
0
| wlock.unlock();
|
294 |
0
| logX(caseNum + "-" + name + " releasing upgrade lock.\n");
|
295 |
| } |
296 |
1
| rlock.unlock();
|
297 |
| } |
298 |
| catch (Exception ex) |
299 |
| { |
300 |
| } |
301 |
| } |
302 |
| }; |
303 |
| } |
304 |
| |
305 |
| |
306 |
| |
307 |
| |
308 |
| |
309 |
| |
310 |
| |
311 |
| |
312 |
| |
313 |
| |
314 |
| |
315 |
2
| protected void acquireReadLock(final String caseNum, final String name,
|
316 |
| final long msecs, final String errMsg) |
317 |
| { |
318 |
2
| try
|
319 |
| { |
320 |
2
| Lock rlock = lock_.readLock();
|
321 |
2
| if (!rlock.tryLock(msecs, TimeUnit.MILLISECONDS))
|
322 |
| { |
323 |
0
| logX(caseNum + "-" + name + " requesting read lock failed!\n");
|
324 |
0
| String str = caseNum + "-" + name + "-RL-0";
|
325 |
0
| postLockingResult(str);
|
326 |
0
| return;
|
327 |
| } |
328 |
| |
329 |
2
| logX(caseNum + "-" + name + " requesting read lock succeeded!\n");
|
330 |
2
| String str = caseNum + "-" + name + "-RL-1";
|
331 |
2
| postLockingResult(str);
|
332 |
2
| TestingUtil.sleepThread(SLEEP_MSECS);
|
333 |
2
| rlock.unlock();
|
334 |
2
| logX(caseNum + "-" + name + " releasing read lock.\n");
|
335 |
| } |
336 |
| catch (Exception ex) |
337 |
| { |
338 |
| } |
339 |
| } |
340 |
| |
341 |
| |
342 |
| |
343 |
| |
344 |
| |
345 |
4
| protected void acquireWriteLock(final String caseNum, final String name,
|
346 |
| final long msecs, final String errMsg) |
347 |
| { |
348 |
4
| try
|
349 |
| { |
350 |
4
| Lock wlock = lock_.writeLock();
|
351 |
4
| if (!wlock.tryLock(msecs, TimeUnit.MILLISECONDS))
|
352 |
| { |
353 |
2
| logX(caseNum + "-" + name + " requesting write lock failed!\n");
|
354 |
2
| String str = caseNum + "-" + name + "-WL-0";
|
355 |
2
| postLockingResult(str);
|
356 |
2
| return;
|
357 |
| } |
358 |
| |
359 |
2
| logX(caseNum + "-" + name + " requesting write lock succeeded!\n");
|
360 |
2
| String str = caseNum + "-" + name + "-WL-1";
|
361 |
2
| postLockingResult(str);
|
362 |
2
| TestingUtil.sleepThread(SLEEP_MSECS);
|
363 |
2
| wlock.unlock();
|
364 |
2
| logX(caseNum + "-" + name + " releasing write lock.\n");
|
365 |
| } |
366 |
| catch (Exception ex) |
367 |
| { |
368 |
| } |
369 |
| } |
370 |
| |
371 |
| |
372 |
| |
373 |
| |
374 |
| |
375 |
2
| protected void acquireUpgradeLock(final String caseNum, final String name,
|
376 |
| final long msecs, final String errMsg) |
377 |
| { |
378 |
2
| try
|
379 |
| { |
380 |
2
| Lock ulock = null;
|
381 |
?
| if ((ulock = lock_.upgradeLockAttempt(msecs)) == null)
|
382 |
| { |
383 |
1
| logX(caseNum + "-" + name + " requesting upgrade lock failed!\n");
|
384 |
1
| String str = caseNum + "-" + name + "-UL-0";
|
385 |
1
| postLockingResult(str);
|
386 |
1
| return;
|
387 |
| } |
388 |
| |
389 |
1
| logX(caseNum + "-" + name + " requesting upgrade lock succeeded!\n");
|
390 |
1
| String str = caseNum + "-" + name + "-UL-1";
|
391 |
1
| postLockingResult(str);
|
392 |
1
| TestingUtil.sleepThread(SLEEP_MSECS);
|
393 |
1
| ulock.unlock();
|
394 |
1
| logX(caseNum + "-" + name + " releasing upgrade lock.\n");
|
395 |
| } |
396 |
| catch (Exception ex) |
397 |
| { |
398 |
| } |
399 |
| } |
400 |
| |
401 |
| |
402 |
| |
403 |
| |
404 |
| |
405 |
| |
406 |
| |
407 |
11
| protected synchronized void cleanLockingResult()
|
408 |
| { |
409 |
11
| lockResult.removeAllElements();
|
410 |
| } |
411 |
| |
412 |
| |
413 |
| |
414 |
| |
415 |
25
| protected synchronized void postLockingResult(Object obj)
|
416 |
| { |
417 |
25
| logX(" Added *" + obj + "* to the result vector\n");
|
418 |
| |
419 |
| |
420 |
25
| lockResult.addElement(obj);
|
421 |
| } |
422 |
| |
423 |
| |
424 |
| |
425 |
| |
426 |
25
| protected synchronized boolean checkLockingResult(String expected)
|
427 |
| { |
428 |
25
| boolean rc = false;
|
429 |
42
| for (int i = 0; i < lockResult.size(); i++)
|
430 |
| { |
431 |
42
| Object ele = lockResult.elementAt(i);
|
432 |
42
| String str = (String) ele;
|
433 |
42
| if (expected.equals(str))
|
434 |
| { |
435 |
25
| rc = true;
|
436 |
25
| break;
|
437 |
| } |
438 |
| } |
439 |
25
| if (rc)
|
440 |
| { |
441 |
25
| logX(" Searching for *" + expected + "* SUCCEEDED.\n");
|
442 |
| } |
443 |
| else |
444 |
| { |
445 |
0
| logX(" Searching for *" + expected + "* FAILED.\n");
|
446 |
| } |
447 |
25
| return rc;
|
448 |
| } |
449 |
| |
450 |
| |
451 |
| |
452 |
| |
453 |
| |
454 |
| |
455 |
| |
456 |
1
| public void testWriteWithMultipleReaders() throws Exception
|
457 |
| { |
458 |
1
| String caseNum = "10";
|
459 |
1
| Thread t1 = readThread(caseNum, "t1", 0, SLEEP_MSECS * 2,
|
460 |
| "1st read lock attempt failed", NO_MORE_OP); |
461 |
1
| Thread t2 = readThread(caseNum, "t2", 0, SLEEP_MSECS,
|
462 |
| "2nd read lock attempt failed", INVOKE_WRITE); |
463 |
| |
464 |
1
| t1.start();
|
465 |
1
| t2.start();
|
466 |
1
| t1.join(3000);
|
467 |
1
| t2.join(3000);
|
468 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-RL-1") &&
|
469 |
| checkLockingResult(caseNum + "-t2-RL-1") && |
470 |
| checkLockingResult(caseNum + "-t2-WL-0")); |
471 |
1
| cleanLockingResult();
|
472 |
| |
473 |
1
| if (t1.isAlive() || t2.isAlive())
|
474 |
| { |
475 |
0
| fail("Possible deadlock resulted in testRead.");
|
476 |
| } |
477 |
| } |
478 |
| |
479 |
| |
480 |
| |
481 |
| |
482 |
1
| public void testUpgradeWithMultipleReadersOn1() throws Exception
|
483 |
| { |
484 |
1
| String caseNum = "11";
|
485 |
1
| Thread t1 = readThread(caseNum, "t1", 0, SLEEP_MSECS,
|
486 |
| "1st read lock attempt failed", INVOKE_WRITE); |
487 |
1
| Thread t2 = readThread(caseNum, "t2", 0, SLEEP_MSECS * 2,
|
488 |
| "2nd read lock attempt failed", NO_MORE_OP); |
489 |
| |
490 |
1
| t1.start();
|
491 |
1
| t2.start();
|
492 |
1
| t1.join(3000);
|
493 |
1
| t2.join(3000);
|
494 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-RL-1") &&
|
495 |
| checkLockingResult(caseNum + "-t2-RL-1") && |
496 |
| checkLockingResult(caseNum + "-t1-WL-0")); |
497 |
1
| cleanLockingResult();
|
498 |
| |
499 |
1
| if (t1.isAlive() || t2.isAlive())
|
500 |
| { |
501 |
0
| fail("Possible deadlock resulted in testRead.");
|
502 |
| } |
503 |
| } |
504 |
| |
505 |
| |
506 |
| |
507 |
| |
508 |
1
| public void testUpgradeReadLock() throws Exception
|
509 |
| { |
510 |
1
| String caseNum = "2";
|
511 |
1
| Thread t1 = readThread(caseNum, "t1", 0, SLEEP_MSECS,
|
512 |
| "1st read lock attempt failed", INVOKE_UPGRADE); |
513 |
| |
514 |
1
| t1.start();
|
515 |
1
| t1.join(3000);
|
516 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-RL-1") &&
|
517 |
| checkLockingResult(caseNum + "-t1-UL-1")); |
518 |
1
| cleanLockingResult();
|
519 |
| } |
520 |
| |
521 |
| |
522 |
| |
523 |
| |
524 |
| |
525 |
1
| public void testReadThenWrite() throws Exception
|
526 |
| { |
527 |
1
| String caseNum = "3";
|
528 |
1
| acquireReadLock(caseNum, "t1", 0, "1st read lock attempt failed");
|
529 |
1
| acquireWriteLock(caseNum, "t1.1", 0, "2nd write lock attempt failed");
|
530 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-RL-1") &&
|
531 |
| checkLockingResult(caseNum + "-t1.1-WL-1")); |
532 |
1
| cleanLockingResult();
|
533 |
| } |
534 |
| |
535 |
| |
536 |
| |
537 |
| |
538 |
| |
539 |
| |
540 |
1
| public void testWriteThenRead() throws Exception
|
541 |
| { |
542 |
1
| String caseNum = "5";
|
543 |
1
| acquireWriteLock(caseNum, "t1", 0, "1st write lock attempt failed");
|
544 |
1
| acquireReadLock(caseNum, "t1.1", 0, "2nd read lock attempt failed");
|
545 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-WL-1") &&
|
546 |
| checkLockingResult(caseNum + "-t1.1-RL-1")); |
547 |
1
| cleanLockingResult();
|
548 |
| } |
549 |
| |
550 |
| |
551 |
| |
552 |
| |
553 |
1
| public void testMultipleReadlock() throws Exception
|
554 |
| { |
555 |
1
| String caseNum = "6";
|
556 |
1
| Thread t1 = readThread(caseNum, "t1", 0, SLEEP_MSECS,
|
557 |
| "1st read lock attempt failed", NO_MORE_OP); |
558 |
1
| Thread t2 = readThread(caseNum, "t2", 0, SLEEP_MSECS,
|
559 |
| "2nd read lock attempt failed", NO_MORE_OP); |
560 |
| |
561 |
1
| t1.start();
|
562 |
1
| t2.start();
|
563 |
1
| t1.join(3000);
|
564 |
1
| t2.join(3000);
|
565 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-RL-1") &&
|
566 |
| checkLockingResult(caseNum + "-t2-RL-1")); |
567 |
1
| cleanLockingResult();
|
568 |
| |
569 |
1
| if (t1.isAlive() || t2.isAlive())
|
570 |
| { |
571 |
0
| fail("Possible deadlock resulted in testRead.");
|
572 |
| } |
573 |
| } |
574 |
| |
575 |
| |
576 |
| |
577 |
| |
578 |
1
| public void testWriteWithExistingReader() throws Exception
|
579 |
| { |
580 |
1
| String caseNum = "8";
|
581 |
1
| Thread t1 = readThread(caseNum, "t1", 0, SLEEP_MSECS,
|
582 |
| "1st write lock attempt failed", NO_MORE_OP); |
583 |
1
| Thread t2 = writeThread(caseNum, "t2", 0, SLEEP_MSECS,
|
584 |
| "2nd read lock attempt failed", NO_MORE_OP); |
585 |
| |
586 |
1
| t1.start();
|
587 |
1
| t2.start();
|
588 |
1
| t1.join(3000);
|
589 |
1
| t2.join(3000);
|
590 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-RL-1") &&
|
591 |
| checkLockingResult(caseNum + "-t2-WL-0")); |
592 |
1
| cleanLockingResult();
|
593 |
| |
594 |
1
| if (t1.isAlive() || t2.isAlive())
|
595 |
| { |
596 |
0
| fail("Possible deadlock resulted in testRead.");
|
597 |
| } |
598 |
| } |
599 |
| |
600 |
| |
601 |
| |
602 |
| |
603 |
1
| public void testReadWithExistingWriter() throws Exception
|
604 |
| { |
605 |
1
| String caseNum = "13";
|
606 |
1
| Thread t1 = writeThread(caseNum, "t1", 0, SLEEP_MSECS,
|
607 |
| "1st write lock attempt failed", NO_MORE_OP); |
608 |
1
| Thread t2 = readThread(caseNum, "t2", 0, SLEEP_MSECS,
|
609 |
| "2nd read lock attempt failed", NO_MORE_OP); |
610 |
| |
611 |
1
| t1.start();
|
612 |
1
| t2.start();
|
613 |
1
| t1.join(3000);
|
614 |
1
| t2.join(3000);
|
615 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-WL-1") &&
|
616 |
| checkLockingResult(caseNum + "-t2-RL-0")); |
617 |
1
| cleanLockingResult();
|
618 |
| |
619 |
1
| if (t1.isAlive() || t2.isAlive())
|
620 |
| { |
621 |
0
| fail("Possible deadlock resulted in testRead.");
|
622 |
| } |
623 |
| } |
624 |
| |
625 |
| |
626 |
| |
627 |
| |
628 |
1
| public void testMultipleWritelocks() throws Exception
|
629 |
| { |
630 |
1
| String caseNum = "14";
|
631 |
1
| Thread t1 = writeThread(caseNum, "t1", 0, SLEEP_MSECS,
|
632 |
| "1st write lock attempt failed", NO_MORE_OP); |
633 |
1
| Thread t2 = writeThread(caseNum, "t2", 0, SLEEP_MSECS,
|
634 |
| "2nd write lock attempt failed", NO_MORE_OP); |
635 |
| |
636 |
1
| t1.start();
|
637 |
1
| t2.start();
|
638 |
1
| t1.join(3000);
|
639 |
1
| t2.join(3000);
|
640 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-WL-1") &&
|
641 |
| checkLockingResult(caseNum + "-t2-WL-0")); |
642 |
1
| cleanLockingResult();
|
643 |
| |
644 |
1
| if (t1.isAlive() || t2.isAlive())
|
645 |
| { |
646 |
0
| fail("Possible deadlock resulted in testRead.");
|
647 |
| } |
648 |
| } |
649 |
| |
650 |
| |
651 |
| |
652 |
| |
653 |
| |
654 |
1
| public void testUpgradeWithExistingReader() throws Exception
|
655 |
| { |
656 |
1
| String caseNum = "7";
|
657 |
1
| Thread t1 = readThread(caseNum, "t1", 0, SLEEP_MSECS,
|
658 |
| "1st read lock attempt failed", NO_MORE_OP); |
659 |
1
| Thread t2 = upgradeThread(caseNum, "t2", 0,
|
660 |
| "2nd upgrade lock attempt failed"); |
661 |
| |
662 |
1
| t1.start();
|
663 |
1
| t2.start();
|
664 |
1
| t1.join(3000);
|
665 |
1
| t2.join(3000);
|
666 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-RL-1") &&
|
667 |
| checkLockingResult(caseNum + "-t2-UL-0")); |
668 |
1
| cleanLockingResult();
|
669 |
| |
670 |
1
| if (t1.isAlive() || t2.isAlive())
|
671 |
| { |
672 |
0
| fail("Possible deadlock resulted in testRead.");
|
673 |
| } |
674 |
| } |
675 |
| |
676 |
| |
677 |
| |
678 |
| |
679 |
1
| public void testUpgradeWithMultipleReaders() throws Exception
|
680 |
| { |
681 |
1
| String caseNum = "9";
|
682 |
1
| Thread t1 = readThread(caseNum, "t1", 0, SLEEP_MSECS * 2,
|
683 |
| "1st read lock attempt failed", NO_MORE_OP); |
684 |
1
| Thread t2 = readThread(caseNum, "t2", 0, SLEEP_MSECS,
|
685 |
| "2nd read lock attempt failed", INVOKE_UPGRADE); |
686 |
| |
687 |
1
| t1.start();
|
688 |
1
| t2.start();
|
689 |
1
| t1.join(3000);
|
690 |
1
| t2.join(3000);
|
691 |
1
| assertTrue(checkLockingResult(caseNum + "-t1-RL-1") &&
|
692 |
| checkLockingResult(caseNum + "-t2-RL-1") && |
693 |
| checkLockingResult(caseNum + "-t2-UL-0")); |
694 |
1
| cleanLockingResult();
|
695 |
| |
696 |
1
| if (t1.isAlive() || t2.isAlive())
|
697 |
| { |
698 |
0
| fail("Possible deadlock resulted in testRead.");
|
699 |
| } |
700 |
| } |
701 |
| } |
702 |
| |