20 |
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import java.lang.reflect.Constructor; |
21 |
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import java.lang.reflect.Method; |
22 |
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import java.lang.reflect.Modifier; |
23 |
+ |
import java.nio.file.Files; |
24 |
+ |
import java.nio.file.Paths; |
25 |
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import java.security.CodeSource; |
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import java.security.Permission; |
27 |
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import java.security.PermissionCollection; |
54 |
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import java.util.concurrent.ThreadPoolExecutor; |
55 |
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import java.util.concurrent.TimeoutException; |
56 |
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import java.util.concurrent.atomic.AtomicReference; |
57 |
+ |
import java.util.regex.Matcher; |
58 |
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import java.util.regex.Pattern; |
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|
60 |
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import junit.framework.AssertionFailedError; |
191 |
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return (regex == null) ? null : Pattern.compile(regex); |
192 |
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} |
193 |
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|
194 |
+ |
// Instrumentation to debug very rare, but very annoying hung test runs. |
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static volatile TestCase currentTestCase; |
196 |
+ |
static volatile int currentRun = 0; |
197 |
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static { |
198 |
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Runnable checkForWedgedTest = new Runnable() { public void run() { |
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// avoid spurious reports with enormous runsPerTest |
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try { MINUTES.sleep(timeoutMinutes); } |
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catch (InterruptedException unexpected) { break; } |
204 |
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if (lastTestCase == currentTestCase) { |
205 |
< |
System.err.println |
206 |
< |
("Looks like we're stuck running test: " |
207 |
< |
+ lastTestCase); |
205 |
> |
System.err.printf( |
206 |
> |
"Looks like we're stuck running test: %s (%d/%d)%n", |
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> |
lastTestCase, currentRun, runsPerTest); |
208 |
> |
System.err.println("availableProcessors=" + |
209 |
> |
Runtime.getRuntime().availableProcessors()); |
210 |
> |
System.err.printf("cpu model = %s%n", cpuModel()); |
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dumpTestThreads(); |
212 |
+ |
// one stack dump is probably enough; more would be spam |
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+ |
break; |
214 |
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} |
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lastTestCase = currentTestCase; |
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}}}; |
219 |
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thread.start(); |
220 |
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} |
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|
222 |
+ |
public static String cpuModel() { |
223 |
+ |
try { |
224 |
+ |
Matcher matcher = Pattern.compile("model name\\s*: (.*)") |
225 |
+ |
.matcher(new String( |
226 |
+ |
Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8")); |
227 |
+ |
matcher.find(); |
228 |
+ |
return matcher.group(1); |
229 |
+ |
} catch (Exception ex) { return null; } |
230 |
+ |
} |
231 |
+ |
|
232 |
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public void runBare() throws Throwable { |
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currentTestCase = this; |
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if (methodFilter == null |
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|
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protected void runTest() throws Throwable { |
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for (int i = 0; i < runsPerTest; i++) { |
241 |
+ |
currentRun = i; |
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if (profileTests) |
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runTestProfiled(); |
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else |
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* the same test have no effect. |
563 |
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*/ |
564 |
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public void threadRecordFailure(Throwable t) { |
565 |
+ |
System.err.println(t); |
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dumpTestThreads(); |
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threadFailure.compareAndSet(null, t); |
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} |
611 |
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} |
612 |
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|
613 |
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/** |
614 |
< |
* Finds missing try { ... } finally { joinPool(e); } |
614 |
> |
* Finds missing PoolCleaners |
615 |
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*/ |
616 |
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void checkForkJoinPoolThreadLeaks() throws InterruptedException { |
617 |
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Thread[] survivors = new Thread[7]; |
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/** |
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* Delays, via Thread.sleep, for the given millisecond delay, but |
772 |
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* if the sleep is shorter than specified, may re-sleep or yield |
773 |
< |
* until time elapses. |
773 |
> |
* until time elapses. Ensures that the given time, as measured |
774 |
> |
* by System.nanoTime(), has elapsed. |
775 |
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*/ |
776 |
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static void delay(long millis) throws InterruptedException { |
777 |
< |
long startTime = System.nanoTime(); |
778 |
< |
long ns = millis * 1000 * 1000; |
779 |
< |
for (;;) { |
777 |
> |
long nanos = millis * (1000 * 1000); |
778 |
> |
final long wakeupTime = System.nanoTime() + nanos; |
779 |
> |
do { |
780 |
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if (millis > 0L) |
781 |
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Thread.sleep(millis); |
782 |
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else // too short to sleep |
783 |
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Thread.yield(); |
784 |
< |
long d = ns - (System.nanoTime() - startTime); |
785 |
< |
if (d > 0L) |
786 |
< |
millis = d / (1000 * 1000); |
764 |
< |
else |
765 |
< |
break; |
766 |
< |
} |
784 |
> |
nanos = wakeupTime - System.nanoTime(); |
785 |
> |
millis = nanos / (1000 * 1000); |
786 |
> |
} while (nanos >= 0L); |
787 |
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} |
788 |
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|
789 |
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/** |
790 |
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* Allows use of try-with-resources with per-test thread pools. |
791 |
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*/ |
792 |
< |
static class PoolCloser<T extends ExecutorService> |
793 |
< |
implements AutoCloseable { |
794 |
< |
public final T pool; |
775 |
< |
public PoolCloser(T pool) { this.pool = pool; } |
792 |
> |
class PoolCleaner implements AutoCloseable { |
793 |
> |
private final ExecutorService pool; |
794 |
> |
public PoolCleaner(ExecutorService pool) { this.pool = pool; } |
795 |
|
public void close() { joinPool(pool); } |
796 |
|
} |
797 |
|
|
798 |
|
/** |
799 |
+ |
* An extension of PoolCleaner that has an action to release the pool. |
800 |
+ |
*/ |
801 |
+ |
class PoolCleanerWithReleaser extends PoolCleaner { |
802 |
+ |
private final Runnable releaser; |
803 |
+ |
public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) { |
804 |
+ |
super(pool); |
805 |
+ |
this.releaser = releaser; |
806 |
+ |
} |
807 |
+ |
public void close() { |
808 |
+ |
try { |
809 |
+ |
releaser.run(); |
810 |
+ |
} finally { |
811 |
+ |
super.close(); |
812 |
+ |
} |
813 |
+ |
} |
814 |
+ |
} |
815 |
+ |
|
816 |
+ |
PoolCleaner cleaner(ExecutorService pool) { |
817 |
+ |
return new PoolCleaner(pool); |
818 |
+ |
} |
819 |
+ |
|
820 |
+ |
PoolCleaner cleaner(ExecutorService pool, Runnable releaser) { |
821 |
+ |
return new PoolCleanerWithReleaser(pool, releaser); |
822 |
+ |
} |
823 |
+ |
|
824 |
+ |
PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) { |
825 |
+ |
return new PoolCleanerWithReleaser(pool, releaser(latch)); |
826 |
+ |
} |
827 |
+ |
|
828 |
+ |
Runnable releaser(final CountDownLatch latch) { |
829 |
+ |
return new Runnable() { public void run() { |
830 |
+ |
do { latch.countDown(); } |
831 |
+ |
while (latch.getCount() > 0); |
832 |
+ |
}}; |
833 |
+ |
} |
834 |
+ |
|
835 |
+ |
/** |
836 |
|
* Waits out termination of a thread pool or fails doing so. |
837 |
|
*/ |
838 |
< |
static void joinPool(ExecutorService pool) { |
838 |
> |
void joinPool(ExecutorService pool) { |
839 |
|
try { |
840 |
|
pool.shutdown(); |
841 |
< |
if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) |
842 |
< |
fail("ExecutorService " + pool + |
843 |
< |
" did not terminate in a timely manner"); |
841 |
> |
if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) { |
842 |
> |
try { |
843 |
> |
threadFail("ExecutorService " + pool + |
844 |
> |
" did not terminate in a timely manner"); |
845 |
> |
} finally { |
846 |
> |
// last resort, for the benefit of subsequent tests |
847 |
> |
pool.shutdownNow(); |
848 |
> |
pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS); |
849 |
> |
} |
850 |
> |
} |
851 |
|
} catch (SecurityException ok) { |
852 |
|
// Allowed in case test doesn't have privs |
853 |
|
} catch (InterruptedException fail) { |
854 |
< |
fail("Unexpected InterruptedException"); |
854 |
> |
threadFail("Unexpected InterruptedException"); |
855 |
|
} |
856 |
|
} |
857 |
|
|
864 |
|
* necessarily individually slow because they must block. |
865 |
|
*/ |
866 |
|
void testInParallel(Action ... actions) { |
867 |
< |
try (PoolCloser<ExecutorService> poolCloser |
868 |
< |
= new PoolCloser<>(Executors.newCachedThreadPool())) { |
806 |
< |
ExecutorService pool = poolCloser.pool; |
867 |
> |
ExecutorService pool = Executors.newCachedThreadPool(); |
868 |
> |
try (PoolCleaner cleaner = cleaner(pool)) { |
869 |
|
ArrayList<Future<?>> futures = new ArrayList<>(actions.length); |
870 |
|
for (final Action action : actions) |
871 |
|
futures.add(pool.submit(new CheckedRunnable() { |
922 |
|
delay(millis); |
923 |
|
assertTrue(thread.isAlive()); |
924 |
|
} catch (InterruptedException fail) { |
925 |
< |
fail("Unexpected InterruptedException"); |
925 |
> |
threadFail("Unexpected InterruptedException"); |
926 |
|
} |
927 |
|
} |
928 |
|
|
944 |
|
for (Thread thread : threads) |
945 |
|
assertTrue(thread.isAlive()); |
946 |
|
} catch (InterruptedException fail) { |
947 |
< |
fail("Unexpected InterruptedException"); |
947 |
> |
threadFail("Unexpected InterruptedException"); |
948 |
|
} |
949 |
|
} |
950 |
|
|
1222 |
|
} finally { |
1223 |
|
if (t.getState() != Thread.State.TERMINATED) { |
1224 |
|
t.interrupt(); |
1225 |
< |
fail("Test timed out"); |
1225 |
> |
threadFail("Test timed out"); |
1226 |
|
} |
1227 |
|
} |
1228 |
|
} |
1370 |
|
}}; |
1371 |
|
} |
1372 |
|
|
1373 |
< |
public Runnable awaiter(final CountDownLatch latch) { |
1374 |
< |
return new CheckedRunnable() { |
1375 |
< |
public void realRun() throws InterruptedException { |
1376 |
< |
await(latch); |
1377 |
< |
}}; |
1373 |
> |
class LatchAwaiter extends CheckedRunnable { |
1374 |
> |
static final int NEW = 0; |
1375 |
> |
static final int RUNNING = 1; |
1376 |
> |
static final int DONE = 2; |
1377 |
> |
final CountDownLatch latch; |
1378 |
> |
int state = NEW; |
1379 |
> |
LatchAwaiter(CountDownLatch latch) { this.latch = latch; } |
1380 |
> |
public void realRun() throws InterruptedException { |
1381 |
> |
state = 1; |
1382 |
> |
await(latch); |
1383 |
> |
state = 2; |
1384 |
> |
} |
1385 |
> |
} |
1386 |
> |
|
1387 |
> |
public LatchAwaiter awaiter(CountDownLatch latch) { |
1388 |
> |
return new LatchAwaiter(latch); |
1389 |
|
} |
1390 |
|
|
1391 |
|
public void await(CountDownLatch latch) { |