8256435: [TESTBUG] java/foreign/TestHandshake.java fails with direct buffer memory OOM

Reviewed-by: mcimadamore

Author: nick-arm

test/jdk/java/foreign/TestHandshake.java

@@ -103,10 +103,13 @@ public final void run() {
             }
             long delay = System.currentTimeMillis() - start.get();
             System.out.println("Accessor #" + id + " terminated - delay (ms): " + delay);
+            cleanup();
         }
 
         abstract void doAccess();
 
+        void cleanup() {}
+
         private void backoff() {
             try {
                 Thread.sleep(ThreadLocalRandom.current().nextInt(MAX_THREAD_SPIN_WAIT_MILLIS));
@@ -185,6 +188,11 @@ static class SegmentMismatchAccessor extends AbstractSegmentAccessor {
         public void doAccess() {
             segment.mismatch(copy);
         }
+
+        @Override
+        void cleanup() {
+            copy.close();
+        }
     }
 
     static class BufferAccessor extends AbstractBufferAccessor {
@@ -251,7 +259,7 @@ static Object[][] accessors() {
         return new Object[][] {
                 { "SegmentAccessor", (AccessorFactory)SegmentAccessor::new },
                 { "SegmentCopyAccessor", (AccessorFactory)SegmentCopyAccessor::new },
-                { "SegmentMismatchAccesor", (AccessorFactory)SegmentMismatchAccessor::new },
+                { "SegmentMismatchAccessor", (AccessorFactory)SegmentMismatchAccessor::new },
                 { "SegmentFillAccessor", (AccessorFactory)SegmentFillAccessor::new },
                 { "BufferAccessor", (AccessorFactory)BufferAccessor::new },
                 { "BufferHandleAccessor", (AccessorFactory)BufferHandleAccessor::new }