1 /*

     2  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /* @test

    25  * @bug 4313887 6993267

    26  * @summary Unit test for Sun-specific ExtendedCopyOption.INTERRUPTIBLE option

    27  * @library ..

    28  * @run main/othervm -XX:-UseVMInterruptibleIO InterruptCopy

    29  */

    30 

    31 import java.nio.file.*;

    32 import java.nio.file.attribute.Attributes;

    33 import java.io.*;

    34 import java.util.concurrent.*;

    35 import com.sun.nio.file.ExtendedCopyOption;

    36 

    37 public class InterruptCopy {

    38 

    39     private static final long FILE_SIZE_TO_COPY = 512L * 1024L * 1024L;

    40     private static final int DELAY_IN_MS = 500;

    41     private static final int DURATION_MAX_IN_MS = 5000;

    42 

    43     public static void main(String[] args) throws Exception {

    44         Path dir = TestUtil.createTemporaryDirectory();

    45         try {

    46             FileStore store = dir.getFileStore();

    47             System.out.format("Checking space (%s)\n", store);

    48             long usableSpace = Attributes

    49                 .readFileStoreSpaceAttributes(store).usableSpace();

    50             if (usableSpace < 2*FILE_SIZE_TO_COPY) {

    51                 System.out.println("Insufficient disk space to run test.");

    52                 return;

    53             }

    54             doTest(dir);

    55         } finally {

    56             TestUtil.removeAll(dir);

    57         }

    58     }

    59 

    60     static void doTest(Path dir) throws Exception {

    61         final Path source = dir.resolve("foo");

    62         final Path target = dir.resolve("bar");

    63 

    64         // create source file (don't create it as sparse file because we

    65         // require the copy to take a long time)

    66         System.out.println("Creating source file...");

    67         byte[] buf = new byte[32*1024];

    68         long total = 0;

    69         OutputStream out = source.newOutputStream();

    70         try {

    71             do {

    72                 out.write(buf);

    73                 total += buf.length;

    74             } while (total < FILE_SIZE_TO_COPY);

    75         } finally {

    76             out.close();

    77         }

    78         System.out.println("Source file created.");

    79 

    80         ScheduledExecutorService pool =

    81             Executors.newSingleThreadScheduledExecutor();

    82         try {

    83             // copy source to target in main thread, interrupting it after a delay

    84             final Thread me = Thread.currentThread();

    85             Future<?> wakeup = pool.schedule(new Runnable() {

    86                 public void run() {

    87                     me.interrupt();

    88                 }}, DELAY_IN_MS, TimeUnit.MILLISECONDS);

    89             System.out.println("Copying file...");

    90             try {

    91                 long start = System.currentTimeMillis();

    92                 source.copyTo(target, ExtendedCopyOption.INTERRUPTIBLE);

    93                 long duration = System.currentTimeMillis() - start;

    94                 if (duration > DURATION_MAX_IN_MS)

    95                     throw new RuntimeException("Copy was not interrupted");

    96             } catch (IOException e) {

    97                 boolean interrupted = Thread.interrupted();

    98                 if (!interrupted)

    99                     throw new RuntimeException("Interrupt status was not set");

   100                 System.out.println("Copy failed (this is expected)");

   101             }

   102             try {

   103                 wakeup.get();

   104             } catch (InterruptedException ignore) { }

   105             Thread.interrupted();

   106 

   107             // copy source to target via task in thread pool, interrupting it after

   108             // a delay using cancel(true)

   109             Future<Void> result = pool.submit(new Callable<Void>() {

   110                 public Void call() throws IOException {

   111                     System.out.println("Copying file...");

   112                     source.copyTo(target, ExtendedCopyOption.INTERRUPTIBLE,

   113                         StandardCopyOption.REPLACE_EXISTING);

   114                     return null;

   115                 }

   116             });

   117             Thread.sleep(DELAY_IN_MS);

   118             boolean cancelled = result.cancel(true);

   119             if (!cancelled)

   120                 result.get();

   121             System.out.println("Copy cancelled.");

   122         } finally {

   123             pool.shutdown();

   124         }

   125     }

   126 }