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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.7 by dl, Thu Dec 4 20:54:46 2003 UTC vs.
Revision 1.15 by dl, Mon Dec 29 19:05:40 2003 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/licenses/publicdomain
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
#	Line 56 | Line 57 | public class ReentrantReadWriteLockTest
57		public Collection<Thread> getQueuedThreads() {
58		return super.getQueuedThreads();
59		}
60	<	public PublicCondition newCondition() {
61	<	return new PublicCondition(this);
60	>	public Collection<Thread> getWaitingThreads(Condition c) {
61	>	return super.getWaitingThreads(c);
62		}
62	–
63	–	static class PublicCondition extends AbstractReentrantLock.ConditionObject {
64	–	PublicCondition(PublicReentrantReadWriteLock l) { super(l); }
65	–	public Collection<Thread> getWaitingThreads() {
66	–	return super.getWaitingThreads();
67	–	}
68	–	}
69	–
63		}
64
65		/**
#	Line 76 | Line 69 | public class ReentrantReadWriteLockTest
69		ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
70		assertFalse(rl.isFair());
71		assertFalse(rl.isWriteLocked());
72	<	assertEquals(0, rl.getReadLocks());
72	>	assertEquals(0, rl.getReadLockCount());
73		ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
74		assertTrue(r2.isFair());
75		assertFalse(r2.isWriteLocked());
76	<	assertEquals(0, r2.getReadLocks());
76	>	assertEquals(0, r2.getReadLockCount());
77		}
78
79		/**
#	Line 91 | Line 84 | public class ReentrantReadWriteLockTest
84		rl.writeLock().lock();
85		assertTrue(rl.isWriteLocked());
86		assertTrue(rl.isWriteLockedByCurrentThread());
87	<	assertEquals(0, rl.getReadLocks());
87	>	assertEquals(0, rl.getReadLockCount());
88		rl.writeLock().unlock();
89		assertFalse(rl.isWriteLocked());
90		assertFalse(rl.isWriteLockedByCurrentThread());
91	<	assertEquals(0, rl.getReadLocks());
91	>	assertEquals(0, rl.getReadLockCount());
92		rl.readLock().lock();
93		assertFalse(rl.isWriteLocked());
94		assertFalse(rl.isWriteLockedByCurrentThread());
95	<	assertEquals(1, rl.getReadLocks());
95	>	assertEquals(1, rl.getReadLockCount());
96		rl.readLock().unlock();
97		assertFalse(rl.isWriteLocked());
98		assertFalse(rl.isWriteLockedByCurrentThread());
99	<	assertEquals(0, rl.getReadLocks());
99	>	assertEquals(0, rl.getReadLockCount());
100		}
101
102
#	Line 115 | Line 108 | public class ReentrantReadWriteLockTest
108		rl.writeLock().lock();
109		assertTrue(rl.isWriteLocked());
110		assertTrue(rl.isWriteLockedByCurrentThread());
111	<	assertEquals(0, rl.getReadLocks());
111	>	assertEquals(0, rl.getReadLockCount());
112		rl.writeLock().unlock();
113		assertFalse(rl.isWriteLocked());
114		assertFalse(rl.isWriteLockedByCurrentThread());
115	<	assertEquals(0, rl.getReadLocks());
115	>	assertEquals(0, rl.getReadLockCount());
116		rl.readLock().lock();
117		assertFalse(rl.isWriteLocked());
118		assertFalse(rl.isWriteLockedByCurrentThread());
119	<	assertEquals(1, rl.getReadLocks());
119	>	assertEquals(1, rl.getReadLockCount());
120		rl.readLock().unlock();
121		assertFalse(rl.isWriteLocked());
122		assertFalse(rl.isWriteLockedByCurrentThread());
123	<	assertEquals(0, rl.getReadLocks());
123	>	assertEquals(0, rl.getReadLockCount());
124		}
125
126		/**
#	Line 183 | Line 176 | public class ReentrantReadWriteLockTest
176		}
177
178		/**
179	<	* timed write-trylock is interruptible
179	>	* timed write-tryLock is interruptible
180		*/
181		public void testWriteTryLock_Interrupted() {
182		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 231 | 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 255 | 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 275 | 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 385 | Line 378 | public class ReentrantReadWriteLockTest
378
379
380		/**
381	<	* Read trylock succeeds if readlocked but not writelocked
381	>	* Read tryLock succeeds if readlocked but not writelocked
382		*/
383		public void testTryLockWhenReadLocked() {
384		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 408 | Line 401 | public class ReentrantReadWriteLockTest
401
402
403		/**
404	<	* write trylock fails when readlocked
404	>	* write tryLock fails when readlocked
405		*/
406		public void testWriteTryLockWhenReadLocked() {
407		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 430 | Line 423 | public class ReentrantReadWriteLockTest
423
424
425		/**
426	<	* write timed trylock times out if locked
426	>	* write timed tryLock times out if locked
427		*/
428		public void testWriteTryLock_Timeout() {
429		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 454 | Line 447 | public class ReentrantReadWriteLockTest
447		}
448
449		/**
450	<	* read timed trylock times out if write-locked
450	>	* read timed tryLock times out if write-locked
451		*/
452		public void testReadTryLock_Timeout() {
453		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 855 | Line 848 | public class ReentrantReadWriteLockTest
848		}
849
850		/**
851	+	* hasQueuedThreads reports whether there are waiting threads
852	+	*/
853	+	public void testhasQueuedThreads() {
854	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
855	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
856	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
857	+	try {
858	+	assertFalse(lock.hasQueuedThreads());
859	+	lock.writeLock().lock();
860	+	t1.start();
861	+	Thread.sleep(SHORT_DELAY_MS);
862	+	assertTrue(lock.hasQueuedThreads());
863	+	t2.start();
864	+	Thread.sleep(SHORT_DELAY_MS);
865	+	assertTrue(lock.hasQueuedThreads());
866	+	t1.interrupt();
867	+	Thread.sleep(SHORT_DELAY_MS);
868	+	assertTrue(lock.hasQueuedThreads());
869	+	lock.writeLock().unlock();
870	+	Thread.sleep(SHORT_DELAY_MS);
871	+	assertFalse(lock.hasQueuedThreads());
872	+	t1.join();
873	+	t2.join();
874	+	} catch(Exception e){
875	+	unexpectedException();
876	+	}
877	+	}
878	+
879	+	/**
880		* getQueueLength reports number of waiting threads
881		*/
882		public void testGetQueueLength() {
#	Line 916 | Line 938 | public class ReentrantReadWriteLockTest
938		}
939
940		/**
941	+	* hasWaiters throws NPE if null
942	+	*/
943	+	public void testHasWaitersNPE() {
944	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
945	+	try {
946	+	lock.hasWaiters(null);
947	+	shouldThrow();
948	+	} catch (NullPointerException success) {
949	+	} catch (Exception ex) {
950	+	unexpectedException();
951	+	}
952	+	}
953	+
954	+	/**
955	+	* getWaitQueueLength throws NPE if null
956	+	*/
957	+	public void testGetWaitQueueLengthNPE() {
958	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
959	+	try {
960	+	lock.getWaitQueueLength(null);
961	+	shouldThrow();
962	+	} catch (NullPointerException success) {
963	+	} catch (Exception ex) {
964	+	unexpectedException();
965	+	}
966	+	}
967	+
968	+
969	+	/**
970	+	* getWaitingThreads throws NPE if null
971	+	*/
972	+	public void testGetWaitingThreadsNPE() {
973	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
974	+	try {
975	+	lock.getWaitingThreads(null);
976	+	shouldThrow();
977	+	} catch (NullPointerException success) {
978	+	} catch (Exception ex) {
979	+	unexpectedException();
980	+	}
981	+	}
982	+
983	+	/**
984	+	* hasWaiters throws IAE if not owned
985	+	*/
986	+	public void testHasWaitersIAE() {
987	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
988	+	final Condition c = (lock.writeLock().newCondition());
989	+	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
990	+	try {
991	+	lock2.hasWaiters(c);
992	+	shouldThrow();
993	+	} catch (IllegalArgumentException success) {
994	+	} catch (Exception ex) {
995	+	unexpectedException();
996	+	}
997	+	}
998	+
999	+	/**
1000	+	* hasWaiters throws IMSE if not locked
1001	+	*/
1002	+	public void testHasWaitersIMSE() {
1003	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1004	+	final Condition c = (lock.writeLock().newCondition());
1005	+	try {
1006	+	lock.hasWaiters(c);
1007	+	shouldThrow();
1008	+	} catch (IllegalMonitorStateException success) {
1009	+	} catch (Exception ex) {
1010	+	unexpectedException();
1011	+	}
1012	+	}
1013	+
1014	+
1015	+	/**
1016	+	* getWaitQueueLength throws IAE if not owned
1017	+	*/
1018	+	public void testGetWaitQueueLengthIAE() {
1019	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1020	+	final Condition c = (lock.writeLock().newCondition());
1021	+	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1022	+	try {
1023	+	lock2.getWaitQueueLength(c);
1024	+	shouldThrow();
1025	+	} catch (IllegalArgumentException success) {
1026	+	} catch (Exception ex) {
1027	+	unexpectedException();
1028	+	}
1029	+	}
1030	+
1031	+	/**
1032	+	* getWaitQueueLength throws IMSE if not locked
1033	+	*/
1034	+	public void testGetWaitQueueLengthIMSE() {
1035	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1036	+	final Condition c = (lock.writeLock().newCondition());
1037	+	try {
1038	+	lock.getWaitQueueLength(c);
1039	+	shouldThrow();
1040	+	} catch (IllegalMonitorStateException success) {
1041	+	} catch (Exception ex) {
1042	+	unexpectedException();
1043	+	}
1044	+	}
1045	+
1046	+
1047	+	/**
1048	+	* getWaitingThreads throws IAE if not owned
1049	+	*/
1050	+	public void testGetWaitingThreadsIAE() {
1051	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1052	+	final Condition c = (lock.writeLock().newCondition());
1053	+	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1054	+	try {
1055	+	lock2.getWaitingThreads(c);
1056	+	shouldThrow();
1057	+	} catch (IllegalArgumentException success) {
1058	+	} catch (Exception ex) {
1059	+	unexpectedException();
1060	+	}
1061	+	}
1062	+
1063	+	/**
1064	+	* getWaitingThreads throws IMSE if not locked
1065	+	*/
1066	+	public void testGetWaitingThreadsIMSE() {
1067	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1068	+	final Condition c = (lock.writeLock().newCondition());
1069	+	try {
1070	+	lock.getWaitingThreads(c);
1071	+	shouldThrow();
1072	+	} catch (IllegalMonitorStateException success) {
1073	+	} catch (Exception ex) {
1074	+	unexpectedException();
1075	+	}
1076	+	}
1077	+
1078	+
1079	+	/**
1080		* hasWaiters returns true when a thread is waiting, else false
1081		*/
1082		public void testHasWaiters() {
1083	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1084	<	final AbstractReentrantLock.ConditionObject c = (AbstractReentrantLock.ConditionObject)(lock.writeLock().newCondition());
1083	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1084	>	final Condition c = (lock.writeLock().newCondition());
1085		Thread t = new Thread(new Runnable() {
1086		public void run() {
1087		try {
1088		lock.writeLock().lock();
1089	<	threadAssertFalse(c.hasWaiters());
1090	<	threadAssertEquals(0, c.getWaitQueueLength());
1089	>	threadAssertFalse(lock.hasWaiters(c));
1090	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
1091		c.await();
1092		lock.writeLock().unlock();
1093		}
#	Line 940 | Line 1101 | public class ReentrantReadWriteLockTest
1101		t.start();
1102		Thread.sleep(SHORT_DELAY_MS);
1103		lock.writeLock().lock();
1104	<	assertTrue(c.hasWaiters());
1105	<	assertEquals(1, c.getWaitQueueLength());
1104	>	assertTrue(lock.hasWaiters(c));
1105	>	assertEquals(1, lock.getWaitQueueLength(c));
1106		c.signal();
1107		lock.writeLock().unlock();
1108		Thread.sleep(SHORT_DELAY_MS);
1109		lock.writeLock().lock();
1110	<	assertFalse(c.hasWaiters());
1111	<	assertEquals(0, c.getWaitQueueLength());
1110	>	assertFalse(lock.hasWaiters(c));
1111	>	assertEquals(0, lock.getWaitQueueLength(c));
1112		lock.writeLock().unlock();
1113		t.join(SHORT_DELAY_MS);
1114		assertFalse(t.isAlive());
#	Line 961 | Line 1122 | public class ReentrantReadWriteLockTest
1122		* getWaitQueueLength returns number of waiting threads
1123		*/
1124		public void testGetWaitQueueLength() {
1125	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1126	<	final AbstractReentrantLock.ConditionObject c = (AbstractReentrantLock.ConditionObject)(lock.writeLock().newCondition());
1127	<	Thread t1 = new Thread(new Runnable() {
967	<	public void run() {
968	<	try {
969	<	lock.writeLock().lock();
970	<	threadAssertFalse(c.hasWaiters());
971	<	threadAssertEquals(0, c.getWaitQueueLength());
972	<	c.await();
973	<	lock.writeLock().unlock();
974	<	}
975	<	catch(InterruptedException e) {
976	<	threadUnexpectedException();
977	<	}
978	<	}
979	<	});
980	<
981	<	Thread t2 = new Thread(new Runnable() {
1125	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1126	>	final Condition c = (lock.writeLock().newCondition());
1127	>	Thread t = new Thread(new Runnable() {
1128		public void run() {
1129		try {
1130		lock.writeLock().lock();
1131	<	threadAssertTrue(c.hasWaiters());
1132	<	threadAssertEquals(1, c.getWaitQueueLength());
1131	>	threadAssertFalse(lock.hasWaiters(c));
1132	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
1133		c.await();
1134		lock.writeLock().unlock();
1135		}
#	Line 994 | Line 1140 | public class ReentrantReadWriteLockTest
1140		});
1141
1142		try {
1143	<	t1.start();
998	<	Thread.sleep(SHORT_DELAY_MS);
999	<	t2.start();
1143	>	t.start();
1144		Thread.sleep(SHORT_DELAY_MS);
1145		lock.writeLock().lock();
1146	<	assertTrue(c.hasWaiters());
1147	<	assertEquals(2, c.getWaitQueueLength());
1148	<	c.signalAll();
1146	>	assertTrue(lock.hasWaiters(c));
1147	>	assertEquals(1, lock.getWaitQueueLength(c));
1148	>	c.signal();
1149		lock.writeLock().unlock();
1150		Thread.sleep(SHORT_DELAY_MS);
1151		lock.writeLock().lock();
1152	<	assertFalse(c.hasWaiters());
1153	<	assertEquals(0, c.getWaitQueueLength());
1152	>	assertFalse(lock.hasWaiters(c));
1153	>	assertEquals(0, lock.getWaitQueueLength(c));
1154		lock.writeLock().unlock();
1155	<	t1.join(SHORT_DELAY_MS);
1156	<	t2.join(SHORT_DELAY_MS);
1013	<	assertFalse(t1.isAlive());
1014	<	assertFalse(t2.isAlive());
1155	>	t.join(SHORT_DELAY_MS);
1156	>	assertFalse(t.isAlive());
1157		}
1158		catch (Exception ex) {
1159		unexpectedException();
1160		}
1161		}
1162
1163	+
1164		/**
1165		* getWaitingThreads returns only and all waiting threads
1166		*/
1167		public void testGetWaitingThreads() {
1168		final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1169	<	final PublicReentrantReadWriteLock.PublicCondition c = (PublicReentrantReadWriteLock.PublicCondition)lock.newCondition();
1169	>	final Condition c = lock.writeLock().newCondition();
1170		Thread t1 = new Thread(new Runnable() {
1171		public void run() {
1172		try {
1173		lock.writeLock().lock();
1174	<	threadAssertTrue(c.getWaitingThreads().isEmpty());
1174	>	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1175		c.await();
1176		lock.writeLock().unlock();
1177		}
#	Line 1042 | Line 1185 | public class ReentrantReadWriteLockTest
1185		public void run() {
1186		try {
1187		lock.writeLock().lock();
1188	<	threadAssertFalse(c.getWaitingThreads().isEmpty());
1188	>	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1189		c.await();
1190		lock.writeLock().unlock();
1191		}
#	Line 1054 | Line 1197 | public class ReentrantReadWriteLockTest
1197
1198		try {
1199		lock.writeLock().lock();
1200	<	assertTrue(c.getWaitingThreads().isEmpty());
1200	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1201		lock.writeLock().unlock();
1202		t1.start();
1203		Thread.sleep(SHORT_DELAY_MS);
1204		t2.start();
1205		Thread.sleep(SHORT_DELAY_MS);
1206		lock.writeLock().lock();
1207	<	assertTrue(c.hasWaiters());
1208	<	assertTrue(c.getWaitingThreads().contains(t1));
1209	<	assertTrue(c.getWaitingThreads().contains(t2));
1207	>	assertTrue(lock.hasWaiters(c));
1208	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1209	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1210		c.signalAll();
1211		lock.writeLock().unlock();
1212		Thread.sleep(SHORT_DELAY_MS);
1213		lock.writeLock().lock();
1214	<	assertFalse(c.hasWaiters());
1215	<	assertTrue(c.getWaitingThreads().isEmpty());
1214	>	assertFalse(lock.hasWaiters(c));
1215	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1216		lock.writeLock().unlock();
1217		t1.join(SHORT_DELAY_MS);
1218		t2.join(SHORT_DELAY_MS);

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