--- jsr166/src/test/tck/JSR166TestCase.java	2015/10/03 16:57:25	1.149
+++ jsr166/src/test/tck/JSR166TestCase.java	2015/10/03 19:39:16	1.154
@@ -15,6 +15,7 @@ import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.lang.management.ManagementFactory;
 import java.lang.management.ThreadInfo;
+import java.lang.management.ThreadMXBean;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
@@ -518,6 +519,7 @@ public class JSR166TestCase extends Test
      * the same test have no effect.
      */
     public void threadRecordFailure(Throwable t) {
+        threadDump();
         threadFailure.compareAndSet(null, t);
     }
 
@@ -528,7 +530,7 @@ public class JSR166TestCase extends Test
     void tearDownFail(String format, Object... args) {
         String msg = toString() + ": " + String.format(format, args);
         System.err.println(msg);
-        printAllStackTraces();
+        threadDump();
         throw new AssertionFailedError(msg);
     }
 
@@ -597,7 +599,7 @@ public class JSR166TestCase extends Test
             fail(reason);
         } catch (AssertionFailedError t) {
             threadRecordFailure(t);
-            fail(reason);
+            throw t;
         }
     }
 
@@ -777,8 +779,9 @@ public class JSR166TestCase extends Test
      * necessarily individually slow because they must block.
      */
     void testInParallel(Action ... actions) {
-        ExecutorService pool = Executors.newCachedThreadPool();
-        try {
+        try (PoolCloser<ExecutorService> poolCloser
+             = new PoolCloser<>(Executors.newCachedThreadPool())) {
+            ExecutorService pool = poolCloser.pool;
             ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
             for (final Action action : actions)
                 futures.add(pool.submit(new CheckedRunnable() {
@@ -791,19 +794,29 @@ public class JSR166TestCase extends Test
                 } catch (Exception ex) {
                     threadUnexpectedException(ex);
                 }
-        } finally {
-            joinPool(pool);
         }
     }
 
     /**
      * A debugging tool to print all stack traces, as jstack does.
+     * Uninteresting threads are filtered out.
      */
-    static void printAllStackTraces() {
-        for (ThreadInfo info :
-                 ManagementFactory.getThreadMXBean()
-                 .dumpAllThreads(true, true))
+    static void threadDump() {
+        ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
+        System.err.println("------ stacktrace dump start ------");
+        for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
+            String name = info.getThreadName();
+            if ("Signal Dispatcher".equals(name))
+                continue;
+            if ("Reference Handler".equals(name)
+                && info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
+                continue;
+            if ("Finalizer".equals(name)
+                && info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
+                continue;
             System.err.print(info);
+        }
+        System.err.println("------ stacktrace dump end ------");
     }
 
     /**