187 |
|
public void run() { |
188 |
|
try { |
189 |
|
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
190 |
– |
threadShouldThrow(); |
190 |
|
} catch(InterruptedException success){} |
191 |
|
} |
192 |
|
}); |
877 |
|
} |
878 |
|
|
879 |
|
/** |
880 |
+ |
* hasQueuedThread(null) throws NPE |
881 |
+ |
*/ |
882 |
+ |
public void testHasQueuedThreadNPE() { |
883 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
884 |
+ |
try { |
885 |
+ |
sync.hasQueuedThread(null); |
886 |
+ |
shouldThrow(); |
887 |
+ |
} catch (NullPointerException success) { |
888 |
+ |
} |
889 |
+ |
} |
890 |
+ |
|
891 |
+ |
/** |
892 |
+ |
* hasQueuedThread reports whether a thread is queued. |
893 |
+ |
*/ |
894 |
+ |
public void testHasQueuedThread() { |
895 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
896 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
897 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
898 |
+ |
try { |
899 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
900 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
901 |
+ |
sync.writeLock().lock(); |
902 |
+ |
t1.start(); |
903 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
904 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
905 |
+ |
t2.start(); |
906 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
907 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
908 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
909 |
+ |
t1.interrupt(); |
910 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
911 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
912 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
913 |
+ |
sync.writeLock().unlock(); |
914 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
915 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
916 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
917 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
918 |
+ |
t1.join(); |
919 |
+ |
t2.join(); |
920 |
+ |
} catch(Exception e){ |
921 |
+ |
unexpectedException(); |
922 |
+ |
} |
923 |
+ |
} |
924 |
+ |
|
925 |
+ |
|
926 |
+ |
/** |
927 |
|
* getQueueLength reports number of waiting threads |
928 |
|
*/ |
929 |
|
public void testGetQueueLength() { |
1271 |
|
} |
1272 |
|
} |
1273 |
|
|
1274 |
+ |
/** |
1275 |
+ |
* toString indicates current lock state |
1276 |
+ |
*/ |
1277 |
+ |
public void testToString() { |
1278 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1279 |
+ |
String us = lock.toString(); |
1280 |
+ |
assertTrue(us.indexOf("Write locks = 0") >= 0); |
1281 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1282 |
+ |
lock.writeLock().lock(); |
1283 |
+ |
String ws = lock.toString(); |
1284 |
+ |
assertTrue(ws.indexOf("Write locks = 1") >= 0); |
1285 |
+ |
assertTrue(ws.indexOf("Read locks = 0") >= 0); |
1286 |
+ |
lock.writeLock().unlock(); |
1287 |
+ |
lock.readLock().lock(); |
1288 |
+ |
lock.readLock().lock(); |
1289 |
+ |
String rs = lock.toString(); |
1290 |
+ |
assertTrue(rs.indexOf("Write locks = 0") >= 0); |
1291 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1292 |
+ |
} |
1293 |
+ |
|
1294 |
+ |
/** |
1295 |
+ |
* readLock.toString indicates current lock state |
1296 |
+ |
*/ |
1297 |
+ |
public void testReadLockToString() { |
1298 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1299 |
+ |
String us = lock.readLock().toString(); |
1300 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1301 |
+ |
lock.readLock().lock(); |
1302 |
+ |
lock.readLock().lock(); |
1303 |
+ |
String rs = lock.readLock().toString(); |
1304 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1305 |
+ |
} |
1306 |
+ |
|
1307 |
+ |
/** |
1308 |
+ |
* writeLock.toString indicates current lock state |
1309 |
+ |
*/ |
1310 |
+ |
public void testWriteLockToString() { |
1311 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1312 |
+ |
String us = lock.writeLock().toString(); |
1313 |
+ |
assertTrue(us.indexOf("Unlocked") >= 0); |
1314 |
+ |
lock.writeLock().lock(); |
1315 |
+ |
String ls = lock.writeLock().toString(); |
1316 |
+ |
assertTrue(ls.indexOf("Locked") >= 0); |
1317 |
+ |
} |
1318 |
+ |
|
1319 |
|
} |