1 |
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/* |
2 |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
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* Expert Group and released to the public domain, as explained at |
4 |
< |
* http://creativecommons.org/licenses/publicdomain |
4 |
> |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
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* Pat Fisher, Mike Judd. |
7 |
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*/ |
8 |
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|
9 |
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import junit.framework.*; |
10 |
+ |
import java.io.ByteArrayInputStream; |
11 |
+ |
import java.io.ByteArrayOutputStream; |
12 |
+ |
import java.io.ObjectInputStream; |
13 |
+ |
import java.io.ObjectOutputStream; |
14 |
+ |
import java.util.Arrays; |
15 |
+ |
import java.util.Date; |
16 |
+ |
import java.util.NoSuchElementException; |
17 |
|
import java.util.PropertyPermission; |
18 |
|
import java.util.concurrent.*; |
19 |
+ |
import java.util.concurrent.atomic.AtomicBoolean; |
20 |
|
import java.util.concurrent.atomic.AtomicReference; |
21 |
|
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
22 |
+ |
import static java.util.concurrent.TimeUnit.NANOSECONDS; |
23 |
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import java.security.CodeSource; |
24 |
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import java.security.Permission; |
25 |
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import java.security.PermissionCollection; |
260 |
|
return 50; |
261 |
|
} |
262 |
|
|
254 |
– |
|
263 |
|
/** |
264 |
|
* Sets delays as multiples of SHORT_DELAY. |
265 |
|
*/ |
267 |
|
SHORT_DELAY_MS = getShortDelay(); |
268 |
|
SMALL_DELAY_MS = SHORT_DELAY_MS * 5; |
269 |
|
MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10; |
270 |
< |
LONG_DELAY_MS = SHORT_DELAY_MS * 50; |
270 |
> |
LONG_DELAY_MS = SHORT_DELAY_MS * 200; |
271 |
> |
} |
272 |
> |
|
273 |
> |
/** |
274 |
> |
* Returns a timeout in milliseconds to be used in tests that |
275 |
> |
* verify that operations block or time out. |
276 |
> |
*/ |
277 |
> |
long timeoutMillis() { |
278 |
> |
return SHORT_DELAY_MS / 4; |
279 |
> |
} |
280 |
> |
|
281 |
> |
/** |
282 |
> |
* Returns a new Date instance representing a time delayMillis |
283 |
> |
* milliseconds in the future. |
284 |
> |
*/ |
285 |
> |
Date delayedDate(long delayMillis) { |
286 |
> |
return new Date(new Date().getTime() + delayMillis); |
287 |
|
} |
288 |
|
|
289 |
|
/** |
312 |
|
* earlier by threadRecordFailure. |
313 |
|
*/ |
314 |
|
public void tearDown() throws Exception { |
315 |
< |
Throwable t = threadFailure.get(); |
315 |
> |
Throwable t = threadFailure.getAndSet(null); |
316 |
|
if (t != null) { |
317 |
|
if (t instanceof Error) |
318 |
|
throw (Error) t; |
458 |
|
else { |
459 |
|
AssertionFailedError afe = |
460 |
|
new AssertionFailedError("unexpected exception: " + t); |
461 |
< |
t.initCause(t); |
461 |
> |
afe.initCause(t); |
462 |
|
throw afe; |
463 |
|
} |
464 |
|
} |
465 |
|
|
466 |
|
/** |
467 |
+ |
* Delays, via Thread.sleep, for the given millisecond delay, but |
468 |
+ |
* if the sleep is shorter than specified, may re-sleep or yield |
469 |
+ |
* until time elapses. |
470 |
+ |
*/ |
471 |
+ |
static void delay(long millis) throws InterruptedException { |
472 |
+ |
long startTime = System.nanoTime(); |
473 |
+ |
long ns = millis * 1000 * 1000; |
474 |
+ |
for (;;) { |
475 |
+ |
if (millis > 0L) |
476 |
+ |
Thread.sleep(millis); |
477 |
+ |
else // too short to sleep |
478 |
+ |
Thread.yield(); |
479 |
+ |
long d = ns - (System.nanoTime() - startTime); |
480 |
+ |
if (d > 0L) |
481 |
+ |
millis = d / (1000 * 1000); |
482 |
+ |
else |
483 |
+ |
break; |
484 |
+ |
} |
485 |
+ |
} |
486 |
+ |
|
487 |
+ |
/** |
488 |
|
* Waits out termination of a thread pool or fails doing so. |
489 |
|
*/ |
490 |
< |
public void joinPool(ExecutorService exec) { |
490 |
> |
void joinPool(ExecutorService exec) { |
491 |
|
try { |
492 |
|
exec.shutdown(); |
493 |
|
assertTrue("ExecutorService did not terminate in a timely manner", |
494 |
< |
exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
494 |
> |
exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)); |
495 |
|
} catch (SecurityException ok) { |
496 |
|
// Allowed in case test doesn't have privs |
497 |
|
} catch (InterruptedException ie) { |
499 |
|
} |
500 |
|
} |
501 |
|
|
502 |
+ |
/** |
503 |
+ |
* Checks that thread does not terminate within the default |
504 |
+ |
* millisecond delay of {@code timeoutMillis()}. |
505 |
+ |
*/ |
506 |
+ |
void assertThreadStaysAlive(Thread thread) { |
507 |
+ |
assertThreadStaysAlive(thread, timeoutMillis()); |
508 |
+ |
} |
509 |
+ |
|
510 |
+ |
/** |
511 |
+ |
* Checks that thread does not terminate within the given millisecond delay. |
512 |
+ |
*/ |
513 |
+ |
void assertThreadStaysAlive(Thread thread, long millis) { |
514 |
+ |
try { |
515 |
+ |
// No need to optimize the failing case via Thread.join. |
516 |
+ |
delay(millis); |
517 |
+ |
assertTrue(thread.isAlive()); |
518 |
+ |
} catch (InterruptedException ie) { |
519 |
+ |
fail("Unexpected InterruptedException"); |
520 |
+ |
} |
521 |
+ |
} |
522 |
+ |
|
523 |
+ |
/** |
524 |
+ |
* Checks that future.get times out, with the default timeout of |
525 |
+ |
* {@code timeoutMillis()}. |
526 |
+ |
*/ |
527 |
+ |
void assertFutureTimesOut(Future future) { |
528 |
+ |
assertFutureTimesOut(future, timeoutMillis()); |
529 |
+ |
} |
530 |
+ |
|
531 |
+ |
/** |
532 |
+ |
* Checks that future.get times out, with the given millisecond timeout. |
533 |
+ |
*/ |
534 |
+ |
void assertFutureTimesOut(Future future, long timeoutMillis) { |
535 |
+ |
long startTime = System.nanoTime(); |
536 |
+ |
try { |
537 |
+ |
future.get(timeoutMillis, MILLISECONDS); |
538 |
+ |
shouldThrow(); |
539 |
+ |
} catch (TimeoutException success) { |
540 |
+ |
} catch (Exception e) { |
541 |
+ |
threadUnexpectedException(e); |
542 |
+ |
} finally { future.cancel(true); } |
543 |
+ |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
544 |
+ |
} |
545 |
|
|
546 |
|
/** |
547 |
|
* Fails with message "should throw exception". |
673 |
|
*/ |
674 |
|
void sleep(long millis) { |
675 |
|
try { |
676 |
< |
Thread.sleep(millis); |
676 |
> |
delay(millis); |
677 |
|
} catch (InterruptedException ie) { |
678 |
|
AssertionFailedError afe = |
679 |
|
new AssertionFailedError("Unexpected InterruptedException"); |
683 |
|
} |
684 |
|
|
685 |
|
/** |
686 |
< |
* Sleeps until the timeout has elapsed, or interrupted. |
687 |
< |
* Does <em>NOT</em> throw InterruptedException. |
686 |
> |
* Waits up to the specified number of milliseconds for the given |
687 |
> |
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING. |
688 |
|
*/ |
689 |
< |
void sleepTillInterrupted(long timeoutMillis) { |
690 |
< |
try { |
691 |
< |
Thread.sleep(timeoutMillis); |
692 |
< |
} catch (InterruptedException wakeup) {} |
689 |
> |
void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) { |
690 |
> |
long timeoutNanos = timeoutMillis * 1000L * 1000L; |
691 |
> |
long t0 = System.nanoTime(); |
692 |
> |
for (;;) { |
693 |
> |
Thread.State s = thread.getState(); |
694 |
> |
if (s == Thread.State.BLOCKED || |
695 |
> |
s == Thread.State.WAITING || |
696 |
> |
s == Thread.State.TIMED_WAITING) |
697 |
> |
return; |
698 |
> |
else if (s == Thread.State.TERMINATED) |
699 |
> |
fail("Unexpected thread termination"); |
700 |
> |
else if (System.nanoTime() - t0 > timeoutNanos) { |
701 |
> |
threadAssertTrue(thread.isAlive()); |
702 |
> |
return; |
703 |
> |
} |
704 |
> |
Thread.yield(); |
705 |
> |
} |
706 |
> |
} |
707 |
> |
|
708 |
> |
/** |
709 |
> |
* Waits up to LONG_DELAY_MS for the given thread to enter a wait |
710 |
> |
* state: BLOCKED, WAITING, or TIMED_WAITING. |
711 |
> |
*/ |
712 |
> |
void waitForThreadToEnterWaitState(Thread thread) { |
713 |
> |
waitForThreadToEnterWaitState(thread, LONG_DELAY_MS); |
714 |
> |
} |
715 |
> |
|
716 |
> |
/** |
717 |
> |
* Returns the number of milliseconds since time given by |
718 |
> |
* startNanoTime, which must have been previously returned from a |
719 |
> |
* call to {@link System.nanoTime()}. |
720 |
> |
*/ |
721 |
> |
long millisElapsedSince(long startNanoTime) { |
722 |
> |
return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime); |
723 |
|
} |
724 |
|
|
725 |
|
/** |
743 |
|
} catch (InterruptedException ie) { |
744 |
|
threadUnexpectedException(ie); |
745 |
|
} finally { |
746 |
< |
if (t.isAlive()) { |
746 |
> |
if (t.getState() != Thread.State.TERMINATED) { |
747 |
|
t.interrupt(); |
748 |
|
fail("Test timed out"); |
749 |
|
} |
750 |
|
} |
751 |
|
} |
752 |
|
|
753 |
+ |
/** |
754 |
+ |
* Waits for LONG_DELAY_MS milliseconds for the thread to |
755 |
+ |
* terminate (using {@link Thread#join(long)}), else interrupts |
756 |
+ |
* the thread (in the hope that it may terminate later) and fails. |
757 |
+ |
*/ |
758 |
+ |
void awaitTermination(Thread t) { |
759 |
+ |
awaitTermination(t, LONG_DELAY_MS); |
760 |
+ |
} |
761 |
+ |
|
762 |
|
// Some convenient Runnable classes |
763 |
|
|
764 |
|
public abstract class CheckedRunnable implements Runnable { |
821 |
|
realRun(); |
822 |
|
threadShouldThrow("InterruptedException"); |
823 |
|
} catch (InterruptedException success) { |
824 |
+ |
threadAssertFalse(Thread.interrupted()); |
825 |
|
} catch (Throwable t) { |
826 |
|
threadUnexpectedException(t); |
827 |
|
} |
851 |
|
threadShouldThrow("InterruptedException"); |
852 |
|
return result; |
853 |
|
} catch (InterruptedException success) { |
854 |
+ |
threadAssertFalse(Thread.interrupted()); |
855 |
|
} catch (Throwable t) { |
856 |
|
threadUnexpectedException(t); |
857 |
|
} |
875 |
|
|
876 |
|
public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) { |
877 |
|
return new CheckedCallable<String>() { |
878 |
< |
public String realCall() { |
878 |
> |
protected String realCall() { |
879 |
|
try { |
880 |
|
latch.await(); |
881 |
|
} catch (InterruptedException quittingTime) {} |
883 |
|
}}; |
884 |
|
} |
885 |
|
|
886 |
+ |
public Runnable awaiter(final CountDownLatch latch) { |
887 |
+ |
return new CheckedRunnable() { |
888 |
+ |
public void realRun() throws InterruptedException { |
889 |
+ |
await(latch); |
890 |
+ |
}}; |
891 |
+ |
} |
892 |
+ |
|
893 |
+ |
public void await(CountDownLatch latch) { |
894 |
+ |
try { |
895 |
+ |
assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS)); |
896 |
+ |
} catch (Throwable t) { |
897 |
+ |
threadUnexpectedException(t); |
898 |
+ |
} |
899 |
+ |
} |
900 |
+ |
|
901 |
+ |
// /** |
902 |
+ |
// * Spin-waits up to LONG_DELAY_MS until flag becomes true. |
903 |
+ |
// */ |
904 |
+ |
// public void await(AtomicBoolean flag) { |
905 |
+ |
// await(flag, LONG_DELAY_MS); |
906 |
+ |
// } |
907 |
+ |
|
908 |
+ |
// /** |
909 |
+ |
// * Spin-waits up to the specified timeout until flag becomes true. |
910 |
+ |
// */ |
911 |
+ |
// public void await(AtomicBoolean flag, long timeoutMillis) { |
912 |
+ |
// long startTime = System.nanoTime(); |
913 |
+ |
// while (!flag.get()) { |
914 |
+ |
// if (millisElapsedSince(startTime) > timeoutMillis) |
915 |
+ |
// throw new AssertionFailedError("timed out"); |
916 |
+ |
// Thread.yield(); |
917 |
+ |
// } |
918 |
+ |
// } |
919 |
+ |
|
920 |
|
public static class NPETask implements Callable<String> { |
921 |
|
public String call() { throw new NullPointerException(); } |
922 |
|
} |
927 |
|
|
928 |
|
public class ShortRunnable extends CheckedRunnable { |
929 |
|
protected void realRun() throws Throwable { |
930 |
< |
Thread.sleep(SHORT_DELAY_MS); |
930 |
> |
delay(SHORT_DELAY_MS); |
931 |
|
} |
932 |
|
} |
933 |
|
|
934 |
|
public class ShortInterruptedRunnable extends CheckedInterruptedRunnable { |
935 |
|
protected void realRun() throws InterruptedException { |
936 |
< |
Thread.sleep(SHORT_DELAY_MS); |
936 |
> |
delay(SHORT_DELAY_MS); |
937 |
|
} |
938 |
|
} |
939 |
|
|
940 |
|
public class SmallRunnable extends CheckedRunnable { |
941 |
|
protected void realRun() throws Throwable { |
942 |
< |
Thread.sleep(SMALL_DELAY_MS); |
942 |
> |
delay(SMALL_DELAY_MS); |
943 |
|
} |
944 |
|
} |
945 |
|
|
946 |
|
public class SmallPossiblyInterruptedRunnable extends CheckedRunnable { |
947 |
|
protected void realRun() { |
948 |
|
try { |
949 |
< |
Thread.sleep(SMALL_DELAY_MS); |
949 |
> |
delay(SMALL_DELAY_MS); |
950 |
|
} catch (InterruptedException ok) {} |
951 |
|
} |
952 |
|
} |
953 |
|
|
954 |
|
public class SmallCallable extends CheckedCallable { |
955 |
|
protected Object realCall() throws InterruptedException { |
956 |
< |
Thread.sleep(SMALL_DELAY_MS); |
956 |
> |
delay(SMALL_DELAY_MS); |
957 |
|
return Boolean.TRUE; |
958 |
|
} |
959 |
|
} |
960 |
|
|
961 |
|
public class MediumRunnable extends CheckedRunnable { |
962 |
|
protected void realRun() throws Throwable { |
963 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
963 |
> |
delay(MEDIUM_DELAY_MS); |
964 |
|
} |
965 |
|
} |
966 |
|
|
967 |
|
public class MediumInterruptedRunnable extends CheckedInterruptedRunnable { |
968 |
|
protected void realRun() throws InterruptedException { |
969 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
969 |
> |
delay(MEDIUM_DELAY_MS); |
970 |
|
} |
971 |
|
} |
972 |
|
|
974 |
|
return new CheckedRunnable() { |
975 |
|
protected void realRun() { |
976 |
|
try { |
977 |
< |
Thread.sleep(timeoutMillis); |
977 |
> |
delay(timeoutMillis); |
978 |
|
} catch (InterruptedException ok) {} |
979 |
|
}}; |
980 |
|
} |
982 |
|
public class MediumPossiblyInterruptedRunnable extends CheckedRunnable { |
983 |
|
protected void realRun() { |
984 |
|
try { |
985 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
985 |
> |
delay(MEDIUM_DELAY_MS); |
986 |
|
} catch (InterruptedException ok) {} |
987 |
|
} |
988 |
|
} |
990 |
|
public class LongPossiblyInterruptedRunnable extends CheckedRunnable { |
991 |
|
protected void realRun() { |
992 |
|
try { |
993 |
< |
Thread.sleep(LONG_DELAY_MS); |
993 |
> |
delay(LONG_DELAY_MS); |
994 |
|
} catch (InterruptedException ok) {} |
995 |
|
} |
996 |
|
} |
1014 |
|
public boolean isDone() { return done; } |
1015 |
|
public void run() { |
1016 |
|
try { |
1017 |
< |
Thread.sleep(timeoutMillis); |
1017 |
> |
delay(timeoutMillis); |
1018 |
|
done = true; |
1019 |
|
} catch (InterruptedException ok) {} |
1020 |
|
} |
1025 |
|
public volatile boolean done = false; |
1026 |
|
public void run() { |
1027 |
|
try { |
1028 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1028 |
> |
delay(SHORT_DELAY_MS); |
1029 |
|
done = true; |
1030 |
|
} catch (InterruptedException ok) {} |
1031 |
|
} |
1035 |
|
public volatile boolean done = false; |
1036 |
|
public void run() { |
1037 |
|
try { |
1038 |
< |
Thread.sleep(SMALL_DELAY_MS); |
1038 |
> |
delay(SMALL_DELAY_MS); |
1039 |
|
done = true; |
1040 |
|
} catch (InterruptedException ok) {} |
1041 |
|
} |
1045 |
|
public volatile boolean done = false; |
1046 |
|
public void run() { |
1047 |
|
try { |
1048 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
1048 |
> |
delay(MEDIUM_DELAY_MS); |
1049 |
|
done = true; |
1050 |
|
} catch (InterruptedException ok) {} |
1051 |
|
} |
1055 |
|
public volatile boolean done = false; |
1056 |
|
public void run() { |
1057 |
|
try { |
1058 |
< |
Thread.sleep(LONG_DELAY_MS); |
1058 |
> |
delay(LONG_DELAY_MS); |
1059 |
|
done = true; |
1060 |
|
} catch (InterruptedException ok) {} |
1061 |
|
} |
1072 |
|
public volatile boolean done = false; |
1073 |
|
public Object call() { |
1074 |
|
try { |
1075 |
< |
Thread.sleep(SMALL_DELAY_MS); |
1075 |
> |
delay(SMALL_DELAY_MS); |
1076 |
|
done = true; |
1077 |
|
} catch (InterruptedException ok) {} |
1078 |
|
return Boolean.TRUE; |
1137 |
|
} |
1138 |
|
} |
1139 |
|
|
1140 |
+ |
void checkEmpty(BlockingQueue q) { |
1141 |
+ |
try { |
1142 |
+ |
assertTrue(q.isEmpty()); |
1143 |
+ |
assertEquals(0, q.size()); |
1144 |
+ |
assertNull(q.peek()); |
1145 |
+ |
assertNull(q.poll()); |
1146 |
+ |
assertNull(q.poll(0, MILLISECONDS)); |
1147 |
+ |
assertEquals(q.toString(), "[]"); |
1148 |
+ |
assertTrue(Arrays.equals(q.toArray(), new Object[0])); |
1149 |
+ |
assertFalse(q.iterator().hasNext()); |
1150 |
+ |
try { |
1151 |
+ |
q.element(); |
1152 |
+ |
shouldThrow(); |
1153 |
+ |
} catch (NoSuchElementException success) {} |
1154 |
+ |
try { |
1155 |
+ |
q.iterator().next(); |
1156 |
+ |
shouldThrow(); |
1157 |
+ |
} catch (NoSuchElementException success) {} |
1158 |
+ |
try { |
1159 |
+ |
q.remove(); |
1160 |
+ |
shouldThrow(); |
1161 |
+ |
} catch (NoSuchElementException success) {} |
1162 |
+ |
} catch (InterruptedException ie) { |
1163 |
+ |
threadUnexpectedException(ie); |
1164 |
+ |
} |
1165 |
+ |
} |
1166 |
+ |
|
1167 |
+ |
@SuppressWarnings("unchecked") |
1168 |
+ |
<T> T serialClone(T o) { |
1169 |
+ |
try { |
1170 |
+ |
ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
1171 |
+ |
ObjectOutputStream oos = new ObjectOutputStream(bos); |
1172 |
+ |
oos.writeObject(o); |
1173 |
+ |
oos.flush(); |
1174 |
+ |
oos.close(); |
1175 |
+ |
ByteArrayInputStream bin = |
1176 |
+ |
new ByteArrayInputStream(bos.toByteArray()); |
1177 |
+ |
ObjectInputStream ois = new ObjectInputStream(bin); |
1178 |
+ |
return (T) ois.readObject(); |
1179 |
+ |
} catch (Throwable t) { |
1180 |
+ |
threadUnexpectedException(t); |
1181 |
+ |
return null; |
1182 |
+ |
} |
1183 |
+ |
} |
1184 |
|
} |