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root/jsr166/jsr166/src/test/tck/ReentrantReadWriteLockTest.java

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.13 by dl, Sun Dec 28 21:56:18 2003 UTC vs.
Revision 1.20 by dl, Fri Jul 2 10:24:00 2004 UTC

#	Line 156 | Line 156 | public class ReentrantReadWriteLockTest
156		*/
157		public void testWriteLockInterruptibly_Interrupted() {
158		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
159	–	lock.writeLock().lock();
159		Thread t = new Thread(new Runnable() {
160		public void run() {
161		try {
162		lock.writeLock().lockInterruptibly();
163	<	threadShouldThrow();
163	>	lock.writeLock().unlock();
164	>	lock.writeLock().lockInterruptibly();
165	>	lock.writeLock().unlock();
166		} catch(InterruptedException success){}
167		}
168		});
169		try {
170	+	lock.writeLock().lock();
171		t.start();
172		t.interrupt();
173		lock.writeLock().unlock();
#	Line 176 | Line 178 | public class ReentrantReadWriteLockTest
178		}
179
180		/**
181	<	* timed write-trylock is interruptible
181	>	* timed write-tryLock is interruptible
182		*/
183		public void testWriteTryLock_Interrupted() {
184		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 185 | Line 187 | public class ReentrantReadWriteLockTest
187		public void run() {
188		try {
189		lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
188	–	threadShouldThrow();
190		} catch(InterruptedException success){}
191		}
192		});
#	Line 209 | Line 210 | public class ReentrantReadWriteLockTest
210		public void run() {
211		try {
212		lock.readLock().lockInterruptibly();
212	–	threadShouldThrow();
213		} catch(InterruptedException success){}
214		}
215		});
#	Line 224 | Line 224 | public class ReentrantReadWriteLockTest
224		}
225
226		/**
227	<	* timed read-trylock is interruptible
227	>	* timed read-tryLock is interruptible
228		*/
229		public void testReadTryLock_Interrupted() {
230		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 248 | Line 248 | public class ReentrantReadWriteLockTest
248
249
250		/**
251	<	* write-trylock fails if locked
251	>	* write-tryLock fails if locked
252		*/
253		public void testWriteTryLockWhenLocked() {
254		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 268 | Line 268 | public class ReentrantReadWriteLockTest
268		}
269
270		/**
271	<	* read-trylock fails if locked
271	>	* read-tryLock fails if locked
272		*/
273		public void testReadTryLockWhenLocked() {
274		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 376 | Line 376 | public class ReentrantReadWriteLockTest
376		}
377		}
378
379	+	/**
380	+	* Read trylock succeeds if write locked by current thread
381	+	*/
382	+	public void testReadHoldingWriteLock() {
383	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
384	+	lock.writeLock().lock();
385	+	assertTrue(lock.readLock().tryLock());
386	+	lock.readLock().unlock();
387	+	lock.writeLock().unlock();
388	+	}
389
390		/**
391	<	* Read trylock succeeds if readlocked but not writelocked
391	>	* Read lock succeeds if write locked by current thread even if
392	>	* other threads are waiting
393	>	*/
394	>	public void testReadHoldingWriteLock2() {
395	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
396	>	lock.writeLock().lock();
397	>	Thread t1 = new Thread(new Runnable() {
398	>	public void run() {
399	>	lock.readLock().lock();
400	>	lock.readLock().unlock();
401	>	}
402	>	});
403	>	Thread t2 = new Thread(new Runnable() {
404	>	public void run() {
405	>	lock.readLock().lock();
406	>	lock.readLock().unlock();
407	>	}
408	>	});
409	>
410	>	try {
411	>	t1.start();
412	>	t2.start();
413	>	lock.readLock().lock();
414	>	lock.readLock().unlock();
415	>	Thread.sleep(SHORT_DELAY_MS);
416	>	lock.readLock().lock();
417	>	lock.readLock().unlock();
418	>	lock.writeLock().unlock();
419	>	t1.join(MEDIUM_DELAY_MS);
420	>	t2.join(MEDIUM_DELAY_MS);
421	>	assertTrue(!t1.isAlive());
422	>	assertTrue(!t2.isAlive());
423	>
424	>	} catch(Exception e){
425	>	unexpectedException();
426	>	}
427	>	}
428	>
429	>	/**
430	>	* Fair Read trylock succeeds if write locked by current thread
431	>	*/
432	>	public void testReadHoldingWriteLockFair() {
433	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
434	>	lock.writeLock().lock();
435	>	assertTrue(lock.readLock().tryLock());
436	>	lock.readLock().unlock();
437	>	lock.writeLock().unlock();
438	>	}
439	>
440	>	/**
441	>	* Fair Read lock succeeds if write locked by current thread even if
442	>	* other threads are waiting
443	>	*/
444	>	public void testReadHoldingWriteLockFair2() {
445	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
446	>	lock.writeLock().lock();
447	>	Thread t1 = new Thread(new Runnable() {
448	>	public void run() {
449	>	lock.readLock().lock();
450	>	lock.readLock().unlock();
451	>	}
452	>	});
453	>	Thread t2 = new Thread(new Runnable() {
454	>	public void run() {
455	>	lock.readLock().lock();
456	>	lock.readLock().unlock();
457	>	}
458	>	});
459	>
460	>	try {
461	>	t1.start();
462	>	t2.start();
463	>	lock.readLock().lock();
464	>	lock.readLock().unlock();
465	>	Thread.sleep(SHORT_DELAY_MS);
466	>	lock.readLock().lock();
467	>	lock.readLock().unlock();
468	>	lock.writeLock().unlock();
469	>	t1.join(MEDIUM_DELAY_MS);
470	>	t2.join(MEDIUM_DELAY_MS);
471	>	assertTrue(!t1.isAlive());
472	>	assertTrue(!t2.isAlive());
473	>
474	>	} catch(Exception e){
475	>	unexpectedException();
476	>	}
477	>	}
478	>
479	>
480	>	/**
481	>	* Read tryLock succeeds if readlocked but not writelocked
482		*/
483		public void testTryLockWhenReadLocked() {
484		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 401 | Line 501 | public class ReentrantReadWriteLockTest
501
502
503		/**
504	<	* write trylock fails when readlocked
504	>	* write tryLock fails when readlocked
505		*/
506		public void testWriteTryLockWhenReadLocked() {
507		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 423 | Line 523 | public class ReentrantReadWriteLockTest
523
524
525		/**
526	<	* write timed trylock times out if locked
526	>	* write timed tryLock times out if locked
527		*/
528		public void testWriteTryLock_Timeout() {
529		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 447 | Line 547 | public class ReentrantReadWriteLockTest
547		}
548
549		/**
550	<	* read timed trylock times out if write-locked
550	>	* read timed tryLock times out if write-locked
551		*/
552		public void testReadTryLock_Timeout() {
553		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 877 | Line 977 | public class ReentrantReadWriteLockTest
977		}
978
979		/**
980	+	* hasQueuedThread(null) throws NPE
981	+	*/
982	+	public void testHasQueuedThreadNPE() {
983	+	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
984	+	try {
985	+	sync.hasQueuedThread(null);
986	+	shouldThrow();
987	+	} catch (NullPointerException success) {
988	+	}
989	+	}
990	+
991	+	/**
992	+	* hasQueuedThread reports whether a thread is queued.
993	+	*/
994	+	public void testHasQueuedThread() {
995	+	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
996	+	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
997	+	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
998	+	try {
999	+	assertFalse(sync.hasQueuedThread(t1));
1000	+	assertFalse(sync.hasQueuedThread(t2));
1001	+	sync.writeLock().lock();
1002	+	t1.start();
1003	+	Thread.sleep(SHORT_DELAY_MS);
1004	+	assertTrue(sync.hasQueuedThread(t1));
1005	+	t2.start();
1006	+	Thread.sleep(SHORT_DELAY_MS);
1007	+	assertTrue(sync.hasQueuedThread(t1));
1008	+	assertTrue(sync.hasQueuedThread(t2));
1009	+	t1.interrupt();
1010	+	Thread.sleep(SHORT_DELAY_MS);
1011	+	assertFalse(sync.hasQueuedThread(t1));
1012	+	assertTrue(sync.hasQueuedThread(t2));
1013	+	sync.writeLock().unlock();
1014	+	Thread.sleep(SHORT_DELAY_MS);
1015	+	assertFalse(sync.hasQueuedThread(t1));
1016	+	Thread.sleep(SHORT_DELAY_MS);
1017	+	assertFalse(sync.hasQueuedThread(t2));
1018	+	t1.join();
1019	+	t2.join();
1020	+	} catch(Exception e){
1021	+	unexpectedException();
1022	+	}
1023	+	}
1024	+
1025	+
1026	+	/**
1027		* getQueueLength reports number of waiting threads
1028		*/
1029		public void testGetQueueLength() {
#	Line 938 | Line 1085 | public class ReentrantReadWriteLockTest
1085		}
1086
1087		/**
1088	+	* hasWaiters throws NPE if null
1089	+	*/
1090	+	public void testHasWaitersNPE() {
1091	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1092	+	try {
1093	+	lock.hasWaiters(null);
1094	+	shouldThrow();
1095	+	} catch (NullPointerException success) {
1096	+	} catch (Exception ex) {
1097	+	unexpectedException();
1098	+	}
1099	+	}
1100	+
1101	+	/**
1102	+	* getWaitQueueLength throws NPE if null
1103	+	*/
1104	+	public void testGetWaitQueueLengthNPE() {
1105	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1106	+	try {
1107	+	lock.getWaitQueueLength(null);
1108	+	shouldThrow();
1109	+	} catch (NullPointerException success) {
1110	+	} catch (Exception ex) {
1111	+	unexpectedException();
1112	+	}
1113	+	}
1114	+
1115	+
1116	+	/**
1117	+	* getWaitingThreads throws NPE if null
1118	+	*/
1119	+	public void testGetWaitingThreadsNPE() {
1120	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1121	+	try {
1122	+	lock.getWaitingThreads(null);
1123	+	shouldThrow();
1124	+	} catch (NullPointerException success) {
1125	+	} catch (Exception ex) {
1126	+	unexpectedException();
1127	+	}
1128	+	}
1129	+
1130	+	/**
1131		* hasWaiters throws IAE if not owned
1132		*/
1133		public void testHasWaitersIAE() {
#	Line 1181 | Line 1371 | public class ReentrantReadWriteLockTest
1371		}
1372		}
1373
1374	+	/**
1375	+	* toString indicates current lock state
1376	+	*/
1377	+	public void testToString() {
1378	+	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1379	+	String us = lock.toString();
1380	+	assertTrue(us.indexOf("Write locks = 0") >= 0);
1381	+	assertTrue(us.indexOf("Read locks = 0") >= 0);
1382	+	lock.writeLock().lock();
1383	+	String ws = lock.toString();
1384	+	assertTrue(ws.indexOf("Write locks = 1") >= 0);
1385	+	assertTrue(ws.indexOf("Read locks = 0") >= 0);
1386	+	lock.writeLock().unlock();
1387	+	lock.readLock().lock();
1388	+	lock.readLock().lock();
1389	+	String rs = lock.toString();
1390	+	assertTrue(rs.indexOf("Write locks = 0") >= 0);
1391	+	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1392	+	}
1393	+
1394	+	/**
1395	+	* readLock.toString indicates current lock state
1396	+	*/
1397	+	public void testReadLockToString() {
1398	+	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1399	+	String us = lock.readLock().toString();
1400	+	assertTrue(us.indexOf("Read locks = 0") >= 0);
1401	+	lock.readLock().lock();
1402	+	lock.readLock().lock();
1403	+	String rs = lock.readLock().toString();
1404	+	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1405	+	}
1406	+
1407	+	/**
1408	+	* writeLock.toString indicates current lock state
1409	+	*/
1410	+	public void testWriteLockToString() {
1411	+	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1412	+	String us = lock.writeLock().toString();
1413	+	assertTrue(us.indexOf("Unlocked") >= 0);
1414	+	lock.writeLock().lock();
1415	+	String ls = lock.writeLock().toString();
1416	+	assertTrue(ls.indexOf("Locked") >= 0);
1417	+	}
1418	+
1419		}

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