7 |
|
*/ |
8 |
|
|
9 |
|
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
+ |
import static java.util.concurrent.TimeUnit.MINUTES; |
11 |
|
import static java.util.concurrent.TimeUnit.NANOSECONDS; |
12 |
|
|
13 |
|
import java.io.ByteArrayInputStream; |
20 |
|
import java.lang.reflect.Constructor; |
21 |
|
import java.lang.reflect.Method; |
22 |
|
import java.lang.reflect.Modifier; |
23 |
+ |
import java.nio.file.Files; |
24 |
+ |
import java.nio.file.Paths; |
25 |
|
import java.security.CodeSource; |
26 |
|
import java.security.Permission; |
27 |
|
import java.security.PermissionCollection; |
54 |
|
import java.util.concurrent.ThreadPoolExecutor; |
55 |
|
import java.util.concurrent.TimeoutException; |
56 |
|
import java.util.concurrent.atomic.AtomicReference; |
57 |
+ |
import java.util.regex.Matcher; |
58 |
|
import java.util.regex.Pattern; |
59 |
|
|
60 |
|
import junit.framework.AssertionFailedError; |
191 |
|
return (regex == null) ? null : Pattern.compile(regex); |
192 |
|
} |
193 |
|
|
194 |
+ |
// Instrumentation to debug very rare, but very annoying hung test runs. |
195 |
+ |
static volatile TestCase currentTestCase; |
196 |
+ |
// static volatile int currentRun = 0; |
197 |
+ |
static { |
198 |
+ |
Runnable checkForWedgedTest = new Runnable() { public void run() { |
199 |
+ |
// avoid spurious reports with enormous runsPerTest |
200 |
+ |
final int timeoutMinutes = Math.max(runsPerTest / 10, 1); |
201 |
+ |
for (TestCase lastTestCase = currentTestCase;;) { |
202 |
+ |
try { MINUTES.sleep(timeoutMinutes); } |
203 |
+ |
catch (InterruptedException unexpected) { break; } |
204 |
+ |
if (lastTestCase == currentTestCase) { |
205 |
+ |
System.err.printf( |
206 |
+ |
"Looks like we're stuck running test: %s%n", |
207 |
+ |
lastTestCase); |
208 |
+ |
// System.err.printf( |
209 |
+ |
// "Looks like we're stuck running test: %s (%d/%d)%n", |
210 |
+ |
// lastTestCase, currentRun, runsPerTest); |
211 |
+ |
System.err.println("availableProcessors=" + |
212 |
+ |
Runtime.getRuntime().availableProcessors()); |
213 |
+ |
System.err.printf("cpu model = %s%n", cpuModel()); |
214 |
+ |
dumpTestThreads(); |
215 |
+ |
// one stack dump is probably enough; more would be spam |
216 |
+ |
break; |
217 |
+ |
} |
218 |
+ |
lastTestCase = currentTestCase; |
219 |
+ |
}}}; |
220 |
+ |
Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest"); |
221 |
+ |
thread.setDaemon(true); |
222 |
+ |
thread.start(); |
223 |
+ |
} |
224 |
+ |
|
225 |
+ |
public static String cpuModel() { |
226 |
+ |
try { |
227 |
+ |
Matcher matcher = Pattern.compile("model name\\s*: (.*)") |
228 |
+ |
.matcher(new String( |
229 |
+ |
Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8")); |
230 |
+ |
matcher.find(); |
231 |
+ |
return matcher.group(1); |
232 |
+ |
} catch (Exception ex) { return null; } |
233 |
+ |
} |
234 |
+ |
|
235 |
|
public void runBare() throws Throwable { |
236 |
+ |
currentTestCase = this; |
237 |
|
if (methodFilter == null |
238 |
|
|| methodFilter.matcher(toString()).find()) |
239 |
|
super.runBare(); |
241 |
|
|
242 |
|
protected void runTest() throws Throwable { |
243 |
|
for (int i = 0; i < runsPerTest; i++) { |
244 |
+ |
// currentRun = i; |
245 |
|
if (profileTests) |
246 |
|
runTestProfiled(); |
247 |
|
else |
508 |
|
} else { |
509 |
|
return new TestSuite(); |
510 |
|
} |
464 |
– |
|
511 |
|
} |
512 |
|
|
513 |
|
// Delays for timing-dependent tests, in milliseconds. |
565 |
|
* the same test have no effect. |
566 |
|
*/ |
567 |
|
public void threadRecordFailure(Throwable t) { |
568 |
+ |
System.err.println(t); |
569 |
+ |
dumpTestThreads(); |
570 |
|
threadFailure.compareAndSet(null, t); |
571 |
|
} |
572 |
|
|
577 |
|
void tearDownFail(String format, Object... args) { |
578 |
|
String msg = toString() + ": " + String.format(format, args); |
579 |
|
System.err.println(msg); |
580 |
< |
printAllStackTraces(); |
580 |
> |
dumpTestThreads(); |
581 |
|
throw new AssertionFailedError(msg); |
582 |
|
} |
583 |
|
|
614 |
|
} |
615 |
|
|
616 |
|
/** |
617 |
< |
* Finds missing try { ... } finally { joinPool(e); } |
617 |
> |
* Finds missing PoolCleaners |
618 |
|
*/ |
619 |
|
void checkForkJoinPoolThreadLeaks() throws InterruptedException { |
620 |
|
Thread[] survivors = new Thread[7]; |
646 |
|
fail(reason); |
647 |
|
} catch (AssertionFailedError t) { |
648 |
|
threadRecordFailure(t); |
649 |
< |
fail(reason); |
649 |
> |
throw t; |
650 |
|
} |
651 |
|
} |
652 |
|
|
773 |
|
/** |
774 |
|
* Delays, via Thread.sleep, for the given millisecond delay, but |
775 |
|
* if the sleep is shorter than specified, may re-sleep or yield |
776 |
< |
* until time elapses. |
776 |
> |
* until time elapses. Ensures that the given time, as measured |
777 |
> |
* by System.nanoTime(), has elapsed. |
778 |
|
*/ |
779 |
|
static void delay(long millis) throws InterruptedException { |
780 |
< |
long startTime = System.nanoTime(); |
781 |
< |
long ns = millis * 1000 * 1000; |
782 |
< |
for (;;) { |
780 |
> |
long nanos = millis * (1000 * 1000); |
781 |
> |
final long wakeupTime = System.nanoTime() + nanos; |
782 |
> |
do { |
783 |
|
if (millis > 0L) |
784 |
|
Thread.sleep(millis); |
785 |
|
else // too short to sleep |
786 |
|
Thread.yield(); |
787 |
< |
long d = ns - (System.nanoTime() - startTime); |
788 |
< |
if (d > 0L) |
789 |
< |
millis = d / (1000 * 1000); |
741 |
< |
else |
742 |
< |
break; |
743 |
< |
} |
787 |
> |
nanos = wakeupTime - System.nanoTime(); |
788 |
> |
millis = nanos / (1000 * 1000); |
789 |
> |
} while (nanos >= 0L); |
790 |
|
} |
791 |
|
|
792 |
|
/** |
793 |
|
* Allows use of try-with-resources with per-test thread pools. |
794 |
|
*/ |
795 |
< |
static class PoolCloser<T extends ExecutorService> |
796 |
< |
implements AutoCloseable { |
797 |
< |
public final T pool; |
752 |
< |
public PoolCloser(T pool) { this.pool = pool; } |
795 |
> |
class PoolCleaner implements AutoCloseable { |
796 |
> |
private final ExecutorService pool; |
797 |
> |
public PoolCleaner(ExecutorService pool) { this.pool = pool; } |
798 |
|
public void close() { joinPool(pool); } |
799 |
|
} |
800 |
|
|
801 |
|
/** |
802 |
+ |
* An extension of PoolCleaner that has an action to release the pool. |
803 |
+ |
*/ |
804 |
+ |
class PoolCleanerWithReleaser extends PoolCleaner { |
805 |
+ |
private final Runnable releaser; |
806 |
+ |
public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) { |
807 |
+ |
super(pool); |
808 |
+ |
this.releaser = releaser; |
809 |
+ |
} |
810 |
+ |
public void close() { |
811 |
+ |
try { |
812 |
+ |
releaser.run(); |
813 |
+ |
} finally { |
814 |
+ |
super.close(); |
815 |
+ |
} |
816 |
+ |
} |
817 |
+ |
} |
818 |
+ |
|
819 |
+ |
PoolCleaner cleaner(ExecutorService pool) { |
820 |
+ |
return new PoolCleaner(pool); |
821 |
+ |
} |
822 |
+ |
|
823 |
+ |
PoolCleaner cleaner(ExecutorService pool, Runnable releaser) { |
824 |
+ |
return new PoolCleanerWithReleaser(pool, releaser); |
825 |
+ |
} |
826 |
+ |
|
827 |
+ |
PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) { |
828 |
+ |
return new PoolCleanerWithReleaser(pool, releaser(latch)); |
829 |
+ |
} |
830 |
+ |
|
831 |
+ |
Runnable releaser(final CountDownLatch latch) { |
832 |
+ |
return new Runnable() { public void run() { |
833 |
+ |
do { latch.countDown(); } |
834 |
+ |
while (latch.getCount() > 0); |
835 |
+ |
}}; |
836 |
+ |
} |
837 |
+ |
|
838 |
+ |
/** |
839 |
|
* Waits out termination of a thread pool or fails doing so. |
840 |
|
*/ |
841 |
< |
static void joinPool(ExecutorService pool) { |
841 |
> |
void joinPool(ExecutorService pool) { |
842 |
|
try { |
843 |
|
pool.shutdown(); |
844 |
< |
if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) |
845 |
< |
fail("ExecutorService " + pool + |
846 |
< |
" did not terminate in a timely manner"); |
844 |
> |
if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) { |
845 |
> |
try { |
846 |
> |
threadFail("ExecutorService " + pool + |
847 |
> |
" did not terminate in a timely manner"); |
848 |
> |
} finally { |
849 |
> |
// last resort, for the benefit of subsequent tests |
850 |
> |
pool.shutdownNow(); |
851 |
> |
pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS); |
852 |
> |
} |
853 |
> |
} |
854 |
|
} catch (SecurityException ok) { |
855 |
|
// Allowed in case test doesn't have privs |
856 |
|
} catch (InterruptedException fail) { |
857 |
< |
fail("Unexpected InterruptedException"); |
857 |
> |
threadFail("Unexpected InterruptedException"); |
858 |
|
} |
859 |
|
} |
860 |
|
|
867 |
|
* necessarily individually slow because they must block. |
868 |
|
*/ |
869 |
|
void testInParallel(Action ... actions) { |
870 |
< |
try (PoolCloser<ExecutorService> poolCloser |
871 |
< |
= new PoolCloser<>(Executors.newCachedThreadPool())) { |
783 |
< |
ExecutorService pool = poolCloser.pool; |
870 |
> |
ExecutorService pool = Executors.newCachedThreadPool(); |
871 |
> |
try (PoolCleaner cleaner = cleaner(pool)) { |
872 |
|
ArrayList<Future<?>> futures = new ArrayList<>(actions.length); |
873 |
|
for (final Action action : actions) |
874 |
|
futures.add(pool.submit(new CheckedRunnable() { |
885 |
|
} |
886 |
|
|
887 |
|
/** |
888 |
< |
* A debugging tool to print all stack traces, as jstack does. |
888 |
> |
* A debugging tool to print stack traces of most threads, as jstack does. |
889 |
|
* Uninteresting threads are filtered out. |
890 |
|
*/ |
891 |
< |
static void printAllStackTraces() { |
891 |
> |
static void dumpTestThreads() { |
892 |
|
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean(); |
893 |
|
System.err.println("------ stacktrace dump start ------"); |
894 |
|
for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) { |
901 |
|
if ("Finalizer".equals(name) |
902 |
|
&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock")) |
903 |
|
continue; |
904 |
+ |
if ("checkForWedgedTest".equals(name)) |
905 |
+ |
continue; |
906 |
|
System.err.print(info); |
907 |
|
} |
908 |
|
System.err.println("------ stacktrace dump end ------"); |
925 |
|
delay(millis); |
926 |
|
assertTrue(thread.isAlive()); |
927 |
|
} catch (InterruptedException fail) { |
928 |
< |
fail("Unexpected InterruptedException"); |
928 |
> |
threadFail("Unexpected InterruptedException"); |
929 |
|
} |
930 |
|
} |
931 |
|
|
947 |
|
for (Thread thread : threads) |
948 |
|
assertTrue(thread.isAlive()); |
949 |
|
} catch (InterruptedException fail) { |
950 |
< |
fail("Unexpected InterruptedException"); |
950 |
> |
threadFail("Unexpected InterruptedException"); |
951 |
|
} |
952 |
|
} |
953 |
|
|
1225 |
|
} finally { |
1226 |
|
if (t.getState() != Thread.State.TERMINATED) { |
1227 |
|
t.interrupt(); |
1228 |
< |
fail("Test timed out"); |
1228 |
> |
threadFail("Test timed out"); |
1229 |
|
} |
1230 |
|
} |
1231 |
|
} |
1373 |
|
}}; |
1374 |
|
} |
1375 |
|
|
1376 |
< |
public Runnable awaiter(final CountDownLatch latch) { |
1377 |
< |
return new CheckedRunnable() { |
1378 |
< |
public void realRun() throws InterruptedException { |
1379 |
< |
await(latch); |
1380 |
< |
}}; |
1376 |
> |
class LatchAwaiter extends CheckedRunnable { |
1377 |
> |
static final int NEW = 0; |
1378 |
> |
static final int RUNNING = 1; |
1379 |
> |
static final int DONE = 2; |
1380 |
> |
final CountDownLatch latch; |
1381 |
> |
int state = NEW; |
1382 |
> |
LatchAwaiter(CountDownLatch latch) { this.latch = latch; } |
1383 |
> |
public void realRun() throws InterruptedException { |
1384 |
> |
state = 1; |
1385 |
> |
await(latch); |
1386 |
> |
state = 2; |
1387 |
> |
} |
1388 |
> |
} |
1389 |
> |
|
1390 |
> |
public LatchAwaiter awaiter(CountDownLatch latch) { |
1391 |
> |
return new LatchAwaiter(latch); |
1392 |
|
} |
1393 |
|
|
1394 |
|
public void await(CountDownLatch latch) { |