1 |
|
/* |
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 |
4 |
> |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
|
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
|
* Pat Fisher, Mike Judd. |
7 |
|
*/ |
8 |
|
|
9 |
|
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.lang.management.ManagementFactory; |
15 |
+ |
import java.lang.management.ThreadInfo; |
16 |
+ |
import java.util.ArrayList; |
17 |
+ |
import java.util.Arrays; |
18 |
+ |
import java.util.Date; |
19 |
+ |
import java.util.Enumeration; |
20 |
+ |
import java.util.List; |
21 |
+ |
import java.util.NoSuchElementException; |
22 |
|
import java.util.PropertyPermission; |
23 |
|
import java.util.concurrent.*; |
24 |
+ |
import java.util.concurrent.atomic.AtomicBoolean; |
25 |
|
import java.util.concurrent.atomic.AtomicReference; |
26 |
|
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
27 |
|
import static java.util.concurrent.TimeUnit.NANOSECONDS; |
74 |
|
* |
75 |
|
* </ol> |
76 |
|
* |
77 |
< |
* <p> <b>Other notes</b> |
77 |
> |
* <p><b>Other notes</b> |
78 |
|
* <ul> |
79 |
|
* |
80 |
|
* <li> Usually, there is one testcase method per JSR166 method |
147 |
|
} |
148 |
|
|
149 |
|
/** |
150 |
< |
* Runs all JSR166 unit tests using junit.textui.TestRunner |
150 |
> |
* Runs all JSR166 unit tests using junit.textui.TestRunner. |
151 |
> |
* Optional command line arg provides the number of iterations to |
152 |
> |
* repeat running the tests. |
153 |
|
*/ |
154 |
|
public static void main(String[] args) { |
155 |
|
if (useSecurityManager) { |
267 |
|
return 50; |
268 |
|
} |
269 |
|
|
255 |
– |
|
270 |
|
/** |
271 |
|
* Sets delays as multiples of SHORT_DELAY. |
272 |
|
*/ |
278 |
|
} |
279 |
|
|
280 |
|
/** |
281 |
+ |
* Returns a timeout in milliseconds to be used in tests that |
282 |
+ |
* verify that operations block or time out. |
283 |
+ |
*/ |
284 |
+ |
long timeoutMillis() { |
285 |
+ |
return SHORT_DELAY_MS / 4; |
286 |
+ |
} |
287 |
+ |
|
288 |
+ |
/** |
289 |
+ |
* Returns a new Date instance representing a time delayMillis |
290 |
+ |
* milliseconds in the future. |
291 |
+ |
*/ |
292 |
+ |
Date delayedDate(long delayMillis) { |
293 |
+ |
return new Date(System.currentTimeMillis() + delayMillis); |
294 |
+ |
} |
295 |
+ |
|
296 |
+ |
/** |
297 |
|
* The first exception encountered if any threadAssertXXX method fails. |
298 |
|
*/ |
299 |
|
private final AtomicReference<Throwable> threadFailure |
314 |
|
} |
315 |
|
|
316 |
|
/** |
317 |
+ |
* Extra checks that get done for all test cases. |
318 |
+ |
* |
319 |
|
* Triggers test case failure if any thread assertions have failed, |
320 |
|
* by rethrowing, in the test harness thread, any exception recorded |
321 |
|
* earlier by threadRecordFailure. |
322 |
+ |
* |
323 |
+ |
* Triggers test case failure if interrupt status is set in the main thread. |
324 |
|
*/ |
325 |
|
public void tearDown() throws Exception { |
326 |
|
Throwable t = threadFailure.getAndSet(null); |
338 |
|
throw afe; |
339 |
|
} |
340 |
|
} |
341 |
+ |
|
342 |
+ |
if (Thread.interrupted()) |
343 |
+ |
throw new AssertionFailedError("interrupt status set in main thread"); |
344 |
|
} |
345 |
|
|
346 |
|
/** |
472 |
|
else { |
473 |
|
AssertionFailedError afe = |
474 |
|
new AssertionFailedError("unexpected exception: " + t); |
475 |
< |
t.initCause(t); |
475 |
> |
afe.initCause(t); |
476 |
|
throw afe; |
477 |
|
} |
478 |
|
} |
479 |
|
|
480 |
|
/** |
481 |
+ |
* Delays, via Thread.sleep, for the given millisecond delay, but |
482 |
+ |
* if the sleep is shorter than specified, may re-sleep or yield |
483 |
+ |
* until time elapses. |
484 |
+ |
*/ |
485 |
+ |
static void delay(long millis) throws InterruptedException { |
486 |
+ |
long startTime = System.nanoTime(); |
487 |
+ |
long ns = millis * 1000 * 1000; |
488 |
+ |
for (;;) { |
489 |
+ |
if (millis > 0L) |
490 |
+ |
Thread.sleep(millis); |
491 |
+ |
else // too short to sleep |
492 |
+ |
Thread.yield(); |
493 |
+ |
long d = ns - (System.nanoTime() - startTime); |
494 |
+ |
if (d > 0L) |
495 |
+ |
millis = d / (1000 * 1000); |
496 |
+ |
else |
497 |
+ |
break; |
498 |
+ |
} |
499 |
+ |
} |
500 |
+ |
|
501 |
+ |
/** |
502 |
|
* Waits out termination of a thread pool or fails doing so. |
503 |
|
*/ |
504 |
< |
public void joinPool(ExecutorService exec) { |
504 |
> |
void joinPool(ExecutorService exec) { |
505 |
|
try { |
506 |
|
exec.shutdown(); |
507 |
|
assertTrue("ExecutorService did not terminate in a timely manner", |
513 |
|
} |
514 |
|
} |
515 |
|
|
516 |
+ |
/** |
517 |
+ |
* A debugging tool to print all stack traces, as jstack does. |
518 |
+ |
*/ |
519 |
+ |
static void printAllStackTraces() { |
520 |
+ |
for (ThreadInfo info : |
521 |
+ |
ManagementFactory.getThreadMXBean() |
522 |
+ |
.dumpAllThreads(true, true)) |
523 |
+ |
System.err.print(info); |
524 |
+ |
} |
525 |
+ |
|
526 |
+ |
/** |
527 |
+ |
* Checks that thread does not terminate within the default |
528 |
+ |
* millisecond delay of {@code timeoutMillis()}. |
529 |
+ |
*/ |
530 |
+ |
void assertThreadStaysAlive(Thread thread) { |
531 |
+ |
assertThreadStaysAlive(thread, timeoutMillis()); |
532 |
+ |
} |
533 |
+ |
|
534 |
+ |
/** |
535 |
+ |
* Checks that thread does not terminate within the given millisecond delay. |
536 |
+ |
*/ |
537 |
+ |
void assertThreadStaysAlive(Thread thread, long millis) { |
538 |
+ |
try { |
539 |
+ |
// No need to optimize the failing case via Thread.join. |
540 |
+ |
delay(millis); |
541 |
+ |
assertTrue(thread.isAlive()); |
542 |
+ |
} catch (InterruptedException ie) { |
543 |
+ |
fail("Unexpected InterruptedException"); |
544 |
+ |
} |
545 |
+ |
} |
546 |
+ |
|
547 |
+ |
/** |
548 |
+ |
* Checks that the threads do not terminate within the default |
549 |
+ |
* millisecond delay of {@code timeoutMillis()}. |
550 |
+ |
*/ |
551 |
+ |
void assertThreadsStayAlive(Thread... threads) { |
552 |
+ |
assertThreadsStayAlive(timeoutMillis(), threads); |
553 |
+ |
} |
554 |
+ |
|
555 |
+ |
/** |
556 |
+ |
* Checks that the threads do not terminate within the given millisecond delay. |
557 |
+ |
*/ |
558 |
+ |
void assertThreadsStayAlive(long millis, Thread... threads) { |
559 |
+ |
try { |
560 |
+ |
// No need to optimize the failing case via Thread.join. |
561 |
+ |
delay(millis); |
562 |
+ |
for (Thread thread : threads) |
563 |
+ |
assertTrue(thread.isAlive()); |
564 |
+ |
} catch (InterruptedException ie) { |
565 |
+ |
fail("Unexpected InterruptedException"); |
566 |
+ |
} |
567 |
+ |
} |
568 |
+ |
|
569 |
+ |
/** |
570 |
+ |
* Checks that future.get times out, with the default timeout of |
571 |
+ |
* {@code timeoutMillis()}. |
572 |
+ |
*/ |
573 |
+ |
void assertFutureTimesOut(Future future) { |
574 |
+ |
assertFutureTimesOut(future, timeoutMillis()); |
575 |
+ |
} |
576 |
+ |
|
577 |
+ |
/** |
578 |
+ |
* Checks that future.get times out, with the given millisecond timeout. |
579 |
+ |
*/ |
580 |
+ |
void assertFutureTimesOut(Future future, long timeoutMillis) { |
581 |
+ |
long startTime = System.nanoTime(); |
582 |
+ |
try { |
583 |
+ |
future.get(timeoutMillis, MILLISECONDS); |
584 |
+ |
shouldThrow(); |
585 |
+ |
} catch (TimeoutException success) { |
586 |
+ |
} catch (Exception e) { |
587 |
+ |
threadUnexpectedException(e); |
588 |
+ |
} finally { future.cancel(true); } |
589 |
+ |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
590 |
+ |
} |
591 |
|
|
592 |
|
/** |
593 |
|
* Fails with message "should throw exception". |
640 |
|
SecurityManager sm = System.getSecurityManager(); |
641 |
|
if (sm == null) { |
642 |
|
r.run(); |
643 |
+ |
} |
644 |
+ |
runWithSecurityManagerWithPermissions(r, permissions); |
645 |
+ |
} |
646 |
+ |
|
647 |
+ |
/** |
648 |
+ |
* Runs Runnable r with a security policy that permits precisely |
649 |
+ |
* the specified permissions. If there is no current security |
650 |
+ |
* manager, a temporary one is set for the duration of the |
651 |
+ |
* Runnable. We require that any security manager permit |
652 |
+ |
* getPolicy/setPolicy. |
653 |
+ |
*/ |
654 |
+ |
public void runWithSecurityManagerWithPermissions(Runnable r, |
655 |
+ |
Permission... permissions) { |
656 |
+ |
SecurityManager sm = System.getSecurityManager(); |
657 |
+ |
if (sm == null) { |
658 |
|
Policy savedPolicy = Policy.getPolicy(); |
659 |
|
try { |
660 |
|
Policy.setPolicy(permissivePolicy()); |
661 |
|
System.setSecurityManager(new SecurityManager()); |
662 |
< |
runWithPermissions(r, permissions); |
662 |
> |
runWithSecurityManagerWithPermissions(r, permissions); |
663 |
|
} finally { |
664 |
|
System.setSecurityManager(null); |
665 |
|
Policy.setPolicy(savedPolicy); |
707 |
|
return perms.implies(p); |
708 |
|
} |
709 |
|
public void refresh() {} |
710 |
+ |
public String toString() { |
711 |
+ |
List<Permission> ps = new ArrayList<Permission>(); |
712 |
+ |
for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();) |
713 |
+ |
ps.add(e.nextElement()); |
714 |
+ |
return "AdjustablePolicy with permissions " + ps; |
715 |
+ |
} |
716 |
|
} |
717 |
|
|
718 |
|
/** |
740 |
|
*/ |
741 |
|
void sleep(long millis) { |
742 |
|
try { |
743 |
< |
Thread.sleep(millis); |
743 |
> |
delay(millis); |
744 |
|
} catch (InterruptedException ie) { |
745 |
|
AssertionFailedError afe = |
746 |
|
new AssertionFailedError("Unexpected InterruptedException"); |
750 |
|
} |
751 |
|
|
752 |
|
/** |
753 |
< |
* Sleeps until the timeout has elapsed, or interrupted. |
600 |
< |
* Does <em>NOT</em> throw InterruptedException. |
601 |
< |
*/ |
602 |
< |
void sleepTillInterrupted(long timeoutMillis) { |
603 |
< |
try { |
604 |
< |
Thread.sleep(timeoutMillis); |
605 |
< |
} catch (InterruptedException wakeup) {} |
606 |
< |
} |
607 |
< |
|
608 |
< |
/** |
609 |
< |
* Waits up to the specified number of milliseconds for the given |
753 |
> |
* Spin-waits up to the specified number of milliseconds for the given |
754 |
|
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING. |
755 |
|
*/ |
756 |
|
void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) { |
757 |
< |
long timeoutNanos = timeoutMillis * 1000L * 1000L; |
614 |
< |
long t0 = System.nanoTime(); |
757 |
> |
long startTime = System.nanoTime(); |
758 |
|
for (;;) { |
759 |
|
Thread.State s = thread.getState(); |
760 |
|
if (s == Thread.State.BLOCKED || |
763 |
|
return; |
764 |
|
else if (s == Thread.State.TERMINATED) |
765 |
|
fail("Unexpected thread termination"); |
766 |
< |
else if (System.nanoTime() - t0 > timeoutNanos) { |
766 |
> |
else if (millisElapsedSince(startTime) > timeoutMillis) { |
767 |
|
threadAssertTrue(thread.isAlive()); |
768 |
|
return; |
769 |
|
} |
772 |
|
} |
773 |
|
|
774 |
|
/** |
775 |
+ |
* Waits up to LONG_DELAY_MS for the given thread to enter a wait |
776 |
+ |
* state: BLOCKED, WAITING, or TIMED_WAITING. |
777 |
+ |
*/ |
778 |
+ |
void waitForThreadToEnterWaitState(Thread thread) { |
779 |
+ |
waitForThreadToEnterWaitState(thread, LONG_DELAY_MS); |
780 |
+ |
} |
781 |
+ |
|
782 |
+ |
/** |
783 |
|
* Returns the number of milliseconds since time given by |
784 |
|
* startNanoTime, which must have been previously returned from a |
785 |
|
* call to {@link System.nanoTime()}. |
809 |
|
} catch (InterruptedException ie) { |
810 |
|
threadUnexpectedException(ie); |
811 |
|
} finally { |
812 |
< |
if (t.isAlive()) { |
812 |
> |
if (t.getState() != Thread.State.TERMINATED) { |
813 |
|
t.interrupt(); |
814 |
|
fail("Test timed out"); |
815 |
|
} |
816 |
|
} |
817 |
|
} |
818 |
|
|
819 |
+ |
/** |
820 |
+ |
* Waits for LONG_DELAY_MS milliseconds for the thread to |
821 |
+ |
* terminate (using {@link Thread#join(long)}), else interrupts |
822 |
+ |
* the thread (in the hope that it may terminate later) and fails. |
823 |
+ |
*/ |
824 |
+ |
void awaitTermination(Thread t) { |
825 |
+ |
awaitTermination(t, LONG_DELAY_MS); |
826 |
+ |
} |
827 |
+ |
|
828 |
|
// Some convenient Runnable classes |
829 |
|
|
830 |
|
public abstract class CheckedRunnable implements Runnable { |
887 |
|
realRun(); |
888 |
|
threadShouldThrow("InterruptedException"); |
889 |
|
} catch (InterruptedException success) { |
890 |
+ |
threadAssertFalse(Thread.interrupted()); |
891 |
|
} catch (Throwable t) { |
892 |
|
threadUnexpectedException(t); |
893 |
|
} |
917 |
|
threadShouldThrow("InterruptedException"); |
918 |
|
return result; |
919 |
|
} catch (InterruptedException success) { |
920 |
+ |
threadAssertFalse(Thread.interrupted()); |
921 |
|
} catch (Throwable t) { |
922 |
|
threadUnexpectedException(t); |
923 |
|
} |
949 |
|
}}; |
950 |
|
} |
951 |
|
|
952 |
+ |
public Runnable awaiter(final CountDownLatch latch) { |
953 |
+ |
return new CheckedRunnable() { |
954 |
+ |
public void realRun() throws InterruptedException { |
955 |
+ |
await(latch); |
956 |
+ |
}}; |
957 |
+ |
} |
958 |
+ |
|
959 |
+ |
public void await(CountDownLatch latch) { |
960 |
+ |
try { |
961 |
+ |
assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS)); |
962 |
+ |
} catch (Throwable t) { |
963 |
+ |
threadUnexpectedException(t); |
964 |
+ |
} |
965 |
+ |
} |
966 |
+ |
|
967 |
+ |
public void await(Semaphore semaphore) { |
968 |
+ |
try { |
969 |
+ |
assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS)); |
970 |
+ |
} catch (Throwable t) { |
971 |
+ |
threadUnexpectedException(t); |
972 |
+ |
} |
973 |
+ |
} |
974 |
+ |
|
975 |
+ |
// /** |
976 |
+ |
// * Spin-waits up to LONG_DELAY_MS until flag becomes true. |
977 |
+ |
// */ |
978 |
+ |
// public void await(AtomicBoolean flag) { |
979 |
+ |
// await(flag, LONG_DELAY_MS); |
980 |
+ |
// } |
981 |
+ |
|
982 |
+ |
// /** |
983 |
+ |
// * Spin-waits up to the specified timeout until flag becomes true. |
984 |
+ |
// */ |
985 |
+ |
// public void await(AtomicBoolean flag, long timeoutMillis) { |
986 |
+ |
// long startTime = System.nanoTime(); |
987 |
+ |
// while (!flag.get()) { |
988 |
+ |
// if (millisElapsedSince(startTime) > timeoutMillis) |
989 |
+ |
// throw new AssertionFailedError("timed out"); |
990 |
+ |
// Thread.yield(); |
991 |
+ |
// } |
992 |
+ |
// } |
993 |
+ |
|
994 |
|
public static class NPETask implements Callable<String> { |
995 |
|
public String call() { throw new NullPointerException(); } |
996 |
|
} |
1001 |
|
|
1002 |
|
public class ShortRunnable extends CheckedRunnable { |
1003 |
|
protected void realRun() throws Throwable { |
1004 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1004 |
> |
delay(SHORT_DELAY_MS); |
1005 |
|
} |
1006 |
|
} |
1007 |
|
|
1008 |
|
public class ShortInterruptedRunnable extends CheckedInterruptedRunnable { |
1009 |
|
protected void realRun() throws InterruptedException { |
1010 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1010 |
> |
delay(SHORT_DELAY_MS); |
1011 |
|
} |
1012 |
|
} |
1013 |
|
|
1014 |
|
public class SmallRunnable extends CheckedRunnable { |
1015 |
|
protected void realRun() throws Throwable { |
1016 |
< |
Thread.sleep(SMALL_DELAY_MS); |
1016 |
> |
delay(SMALL_DELAY_MS); |
1017 |
|
} |
1018 |
|
} |
1019 |
|
|
1020 |
|
public class SmallPossiblyInterruptedRunnable extends CheckedRunnable { |
1021 |
|
protected void realRun() { |
1022 |
|
try { |
1023 |
< |
Thread.sleep(SMALL_DELAY_MS); |
1023 |
> |
delay(SMALL_DELAY_MS); |
1024 |
|
} catch (InterruptedException ok) {} |
1025 |
|
} |
1026 |
|
} |
1027 |
|
|
1028 |
|
public class SmallCallable extends CheckedCallable { |
1029 |
|
protected Object realCall() throws InterruptedException { |
1030 |
< |
Thread.sleep(SMALL_DELAY_MS); |
1030 |
> |
delay(SMALL_DELAY_MS); |
1031 |
|
return Boolean.TRUE; |
1032 |
|
} |
1033 |
|
} |
1034 |
|
|
1035 |
|
public class MediumRunnable extends CheckedRunnable { |
1036 |
|
protected void realRun() throws Throwable { |
1037 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
1037 |
> |
delay(MEDIUM_DELAY_MS); |
1038 |
|
} |
1039 |
|
} |
1040 |
|
|
1041 |
|
public class MediumInterruptedRunnable extends CheckedInterruptedRunnable { |
1042 |
|
protected void realRun() throws InterruptedException { |
1043 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
1043 |
> |
delay(MEDIUM_DELAY_MS); |
1044 |
|
} |
1045 |
|
} |
1046 |
|
|
1048 |
|
return new CheckedRunnable() { |
1049 |
|
protected void realRun() { |
1050 |
|
try { |
1051 |
< |
Thread.sleep(timeoutMillis); |
1051 |
> |
delay(timeoutMillis); |
1052 |
|
} catch (InterruptedException ok) {} |
1053 |
|
}}; |
1054 |
|
} |
1056 |
|
public class MediumPossiblyInterruptedRunnable extends CheckedRunnable { |
1057 |
|
protected void realRun() { |
1058 |
|
try { |
1059 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
1059 |
> |
delay(MEDIUM_DELAY_MS); |
1060 |
|
} catch (InterruptedException ok) {} |
1061 |
|
} |
1062 |
|
} |
1064 |
|
public class LongPossiblyInterruptedRunnable extends CheckedRunnable { |
1065 |
|
protected void realRun() { |
1066 |
|
try { |
1067 |
< |
Thread.sleep(LONG_DELAY_MS); |
1067 |
> |
delay(LONG_DELAY_MS); |
1068 |
|
} catch (InterruptedException ok) {} |
1069 |
|
} |
1070 |
|
} |
1088 |
|
public boolean isDone() { return done; } |
1089 |
|
public void run() { |
1090 |
|
try { |
1091 |
< |
Thread.sleep(timeoutMillis); |
1091 |
> |
delay(timeoutMillis); |
1092 |
|
done = true; |
1093 |
|
} catch (InterruptedException ok) {} |
1094 |
|
} |
1099 |
|
public volatile boolean done = false; |
1100 |
|
public void run() { |
1101 |
|
try { |
1102 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1102 |
> |
delay(SHORT_DELAY_MS); |
1103 |
|
done = true; |
1104 |
|
} catch (InterruptedException ok) {} |
1105 |
|
} |
1109 |
|
public volatile boolean done = false; |
1110 |
|
public void run() { |
1111 |
|
try { |
1112 |
< |
Thread.sleep(SMALL_DELAY_MS); |
1112 |
> |
delay(SMALL_DELAY_MS); |
1113 |
|
done = true; |
1114 |
|
} catch (InterruptedException ok) {} |
1115 |
|
} |
1119 |
|
public volatile boolean done = false; |
1120 |
|
public void run() { |
1121 |
|
try { |
1122 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
1122 |
> |
delay(MEDIUM_DELAY_MS); |
1123 |
|
done = true; |
1124 |
|
} catch (InterruptedException ok) {} |
1125 |
|
} |
1129 |
|
public volatile boolean done = false; |
1130 |
|
public void run() { |
1131 |
|
try { |
1132 |
< |
Thread.sleep(LONG_DELAY_MS); |
1132 |
> |
delay(LONG_DELAY_MS); |
1133 |
|
done = true; |
1134 |
|
} catch (InterruptedException ok) {} |
1135 |
|
} |
1146 |
|
public volatile boolean done = false; |
1147 |
|
public Object call() { |
1148 |
|
try { |
1149 |
< |
Thread.sleep(SMALL_DELAY_MS); |
1149 |
> |
delay(SMALL_DELAY_MS); |
1150 |
|
done = true; |
1151 |
|
} catch (InterruptedException ok) {} |
1152 |
|
return Boolean.TRUE; |
1193 |
|
} |
1194 |
|
|
1195 |
|
/** |
1196 |
< |
* A CyclicBarrier that fails with AssertionFailedErrors instead |
1197 |
< |
* of throwing checked exceptions. |
1196 |
> |
* A CyclicBarrier that uses timed await and fails with |
1197 |
> |
* AssertionFailedErrors instead of throwing checked exceptions. |
1198 |
|
*/ |
1199 |
|
public class CheckedBarrier extends CyclicBarrier { |
1200 |
|
public CheckedBarrier(int parties) { super(parties); } |
1201 |
|
|
1202 |
|
public int await() { |
1203 |
|
try { |
1204 |
< |
return super.await(); |
1204 |
> |
return super.await(2 * LONG_DELAY_MS, MILLISECONDS); |
1205 |
> |
} catch (TimeoutException e) { |
1206 |
> |
throw new AssertionFailedError("timed out"); |
1207 |
|
} catch (Exception e) { |
1208 |
|
AssertionFailedError afe = |
1209 |
|
new AssertionFailedError("Unexpected exception: " + e); |
1213 |
|
} |
1214 |
|
} |
1215 |
|
|
1216 |
+ |
void checkEmpty(BlockingQueue q) { |
1217 |
+ |
try { |
1218 |
+ |
assertTrue(q.isEmpty()); |
1219 |
+ |
assertEquals(0, q.size()); |
1220 |
+ |
assertNull(q.peek()); |
1221 |
+ |
assertNull(q.poll()); |
1222 |
+ |
assertNull(q.poll(0, MILLISECONDS)); |
1223 |
+ |
assertEquals(q.toString(), "[]"); |
1224 |
+ |
assertTrue(Arrays.equals(q.toArray(), new Object[0])); |
1225 |
+ |
assertFalse(q.iterator().hasNext()); |
1226 |
+ |
try { |
1227 |
+ |
q.element(); |
1228 |
+ |
shouldThrow(); |
1229 |
+ |
} catch (NoSuchElementException success) {} |
1230 |
+ |
try { |
1231 |
+ |
q.iterator().next(); |
1232 |
+ |
shouldThrow(); |
1233 |
+ |
} catch (NoSuchElementException success) {} |
1234 |
+ |
try { |
1235 |
+ |
q.remove(); |
1236 |
+ |
shouldThrow(); |
1237 |
+ |
} catch (NoSuchElementException success) {} |
1238 |
+ |
} catch (InterruptedException ie) { |
1239 |
+ |
threadUnexpectedException(ie); |
1240 |
+ |
} |
1241 |
+ |
} |
1242 |
+ |
|
1243 |
+ |
void assertSerialEquals(Object x, Object y) { |
1244 |
+ |
assertTrue(Arrays.equals(serialBytes(x), serialBytes(y))); |
1245 |
+ |
} |
1246 |
+ |
|
1247 |
+ |
void assertNotSerialEquals(Object x, Object y) { |
1248 |
+ |
assertFalse(Arrays.equals(serialBytes(x), serialBytes(y))); |
1249 |
+ |
} |
1250 |
+ |
|
1251 |
+ |
byte[] serialBytes(Object o) { |
1252 |
+ |
try { |
1253 |
+ |
ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
1254 |
+ |
ObjectOutputStream oos = new ObjectOutputStream(bos); |
1255 |
+ |
oos.writeObject(o); |
1256 |
+ |
oos.flush(); |
1257 |
+ |
oos.close(); |
1258 |
+ |
return bos.toByteArray(); |
1259 |
+ |
} catch (Throwable t) { |
1260 |
+ |
threadUnexpectedException(t); |
1261 |
+ |
return new byte[0]; |
1262 |
+ |
} |
1263 |
+ |
} |
1264 |
+ |
|
1265 |
+ |
@SuppressWarnings("unchecked") |
1266 |
+ |
<T> T serialClone(T o) { |
1267 |
+ |
try { |
1268 |
+ |
ObjectInputStream ois = new ObjectInputStream |
1269 |
+ |
(new ByteArrayInputStream(serialBytes(o))); |
1270 |
+ |
T clone = (T) ois.readObject(); |
1271 |
+ |
assertSame(o.getClass(), clone.getClass()); |
1272 |
+ |
return clone; |
1273 |
+ |
} catch (Throwable t) { |
1274 |
+ |
threadUnexpectedException(t); |
1275 |
+ |
return null; |
1276 |
+ |
} |
1277 |
+ |
} |
1278 |
|
} |