692 |
|
} |
693 |
|
|
694 |
|
/** |
695 |
+ |
* Returns a random element from given choices. |
696 |
+ |
*/ |
697 |
+ |
<T> T chooseRandomly(T... choices) { |
698 |
+ |
return choices[ThreadLocalRandom.current().nextInt(choices.length)]; |
699 |
+ |
} |
700 |
+ |
|
701 |
+ |
/** |
702 |
|
* Returns the shortest timed delay. This can be scaled up for |
703 |
|
* slow machines using the jsr166.delay.factor system property, |
704 |
|
* or via jtreg's -timeoutFactor: flag. |
1381 |
|
} |
1382 |
|
|
1383 |
|
/** |
1384 |
+ |
* Spin-waits up to LONG_DELAY_MS milliseconds for the current thread to |
1385 |
+ |
* be interrupted. Clears the interrupt status before returning. |
1386 |
+ |
*/ |
1387 |
+ |
void awaitInterrupted() { |
1388 |
+ |
for (long startTime = 0L; !Thread.interrupted(); ) { |
1389 |
+ |
if (startTime == 0L) |
1390 |
+ |
startTime = System.nanoTime(); |
1391 |
+ |
else if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
1392 |
+ |
fail("timed out waiting for thread interrupt"); |
1393 |
+ |
Thread.yield(); |
1394 |
+ |
} |
1395 |
+ |
} |
1396 |
+ |
|
1397 |
+ |
/** |
1398 |
|
* Returns the number of milliseconds since time given by |
1399 |
|
* startNanoTime, which must have been previously returned from a |
1400 |
|
* call to {@link System#nanoTime()}. |
1455 |
|
t.join(timeoutMillis); |
1456 |
|
} catch (InterruptedException fail) { |
1457 |
|
threadUnexpectedException(fail); |
1458 |
< |
} finally { |
1459 |
< |
if (t.getState() != Thread.State.TERMINATED) { |
1460 |
< |
t.interrupt(); |
1461 |
< |
threadFail("timed out waiting for thread to terminate"); |
1462 |
< |
} |
1458 |
> |
} |
1459 |
> |
Thread.State state; |
1460 |
> |
if ((state = t.getState()) != Thread.State.TERMINATED) { |
1461 |
> |
t.interrupt(); |
1462 |
> |
threadFail("timed out waiting for thread to terminate; " |
1463 |
> |
+ "state=" + state); |
1464 |
|
} |
1465 |
|
} |
1466 |
|
|