| 6 |
|
* Pat Fisher, Mike Judd. |
| 7 |
|
*/ |
| 8 |
|
|
| 9 |
< |
import junit.framework.*; |
| 9 |
> |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| 10 |
> |
import static java.util.concurrent.TimeUnit.NANOSECONDS; |
| 11 |
> |
import static java.util.concurrent.TimeUnit.SECONDS; |
| 12 |
> |
|
| 13 |
> |
import java.util.ArrayList; |
| 14 |
> |
import java.util.List; |
| 15 |
> |
import java.util.NoSuchElementException; |
| 16 |
|
import java.util.concurrent.Callable; |
| 17 |
|
import java.util.concurrent.CancellationException; |
| 18 |
|
import java.util.concurrent.CountDownLatch; |
| 19 |
|
import java.util.concurrent.ExecutionException; |
| 20 |
+ |
import java.util.concurrent.Executors; |
| 21 |
+ |
import java.util.concurrent.ExecutorService; |
| 22 |
|
import java.util.concurrent.Future; |
| 23 |
|
import java.util.concurrent.FutureTask; |
| 24 |
|
import java.util.concurrent.TimeoutException; |
| 25 |
|
import java.util.concurrent.atomic.AtomicInteger; |
| 26 |
< |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| 27 |
< |
import static java.util.concurrent.TimeUnit.SECONDS; |
| 28 |
< |
import java.util.*; |
| 26 |
> |
|
| 27 |
> |
import junit.framework.Test; |
| 28 |
> |
import junit.framework.TestSuite; |
| 29 |
|
|
| 30 |
|
public class FutureTaskTest extends JSR166TestCase { |
| 31 |
|
|
| 809 |
|
} |
| 810 |
|
} |
| 811 |
|
|
| 812 |
+ |
/** |
| 813 |
+ |
* timed get with most negative timeout works correctly (i.e. no |
| 814 |
+ |
* underflow bug) |
| 815 |
+ |
*/ |
| 816 |
+ |
public void testGet_NegativeInfinityTimeout() throws Exception { |
| 817 |
+ |
final ExecutorService pool = Executors.newFixedThreadPool(10); |
| 818 |
+ |
final Runnable nop = new Runnable() { public void run() {}}; |
| 819 |
+ |
final FutureTask<Void> task = new FutureTask<>(nop, null); |
| 820 |
+ |
final List<Future<?>> futures = new ArrayList<>(); |
| 821 |
+ |
Runnable r = new Runnable() { public void run() { |
| 822 |
+ |
for (long timeout : new long[] { 0L, -1L, Long.MIN_VALUE }) { |
| 823 |
+ |
try { |
| 824 |
+ |
task.get(timeout, NANOSECONDS); |
| 825 |
+ |
shouldThrow(); |
| 826 |
+ |
} catch (TimeoutException success) { |
| 827 |
+ |
} catch (Throwable fail) {threadUnexpectedException(fail);}}}}; |
| 828 |
+ |
for (int i = 0; i < 10; i++) |
| 829 |
+ |
futures.add(pool.submit(r)); |
| 830 |
+ |
try { |
| 831 |
+ |
joinPool(pool); |
| 832 |
+ |
for (Future<?> future : futures) |
| 833 |
+ |
checkCompletedNormally(future, null); |
| 834 |
+ |
} finally { |
| 835 |
+ |
task.run(); // last resort to help terminate |
| 836 |
+ |
} |
| 837 |
+ |
} |
| 838 |
+ |
|
| 839 |
|
} |
