--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/nio/channels/FileChannel/TempDirectBuffersReclamation.java	Fri Jun 22 17:56:55 2018 +0200
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.lang.management.BufferPoolMXBean;
+import java.lang.management.ManagementFactory;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import static java.nio.file.StandardOpenOption.CREATE;
+import static java.nio.file.StandardOpenOption.TRUNCATE_EXISTING;
+import static java.nio.file.StandardOpenOption.WRITE;
+
+/*
+ * @test
+ * @bug 8202788
+ * @summary Test reclamation of thread-local temporary direct byte buffers at thread exit
+ * @modules java.management
+ * @run main/othervm TempDirectBuffersReclamation
+ */
+public class TempDirectBuffersReclamation {
+
+    public static void main(String[] args) throws IOException {
+
+        BufferPoolMXBean dbPool = ManagementFactory
+            .getPlatformMXBeans(BufferPoolMXBean.class)
+            .stream()
+            .filter(bp -> bp.getName().equals("direct"))
+            .findFirst()
+            .orElseThrow(() -> new RuntimeException("Can't obtain direct BufferPoolMXBean"));
+
+        long count0 = dbPool.getCount();
+        long memoryUsed0 = dbPool.getMemoryUsed();
+
+        Thread thread = new Thread(TempDirectBuffersReclamation::doFileChannelWrite);
+        thread.start();
+        try {
+            thread.join();
+        } catch (InterruptedException e) {
+            throw new RuntimeException(e);
+        }
+
+        long count1 = dbPool.getCount();
+        long memoryUsed1 = dbPool.getMemoryUsed();
+
+        if (count0 != count1 || memoryUsed0 != memoryUsed1) {
+            throw new AssertionError(
+                "Direct BufferPool not same before thread activity and after thread exit.\n" +
+                "Before: # of buffers: " + count0 + ", memory used: " + memoryUsed0 + "\n" +
+                " After: # of buffers: " + count1 + ", memory used: " + memoryUsed1 + "\n"
+            );
+        }
+    }
+
+    static void doFileChannelWrite() {
+        try {
+            Path file = Files.createTempFile("test", ".tmp");
+            try (FileChannel fc = FileChannel.open(file, CREATE, WRITE, TRUNCATE_EXISTING)) {
+                fc.write(ByteBuffer.wrap("HELLO".getBytes(StandardCharsets.UTF_8)));
+            } finally {
+                Files.delete(file);
+            }
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+}