1 /*
   2  * Copyright (c) 2008, 2011, 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.io.*;
  33 import java.util.concurrent.*;
  34 import com.sun.nio.file.ExtendedCopyOption;
  35 
  36 public class InterruptCopy {
  37 
  38     private static final long FILE_SIZE_TO_COPY = 512L * 1024L * 1024L;
  39     private static final int DELAY_IN_MS = 500;
  40     private static final int DURATION_MAX_IN_MS = 5000;
  41 
  42     public static void main(String[] args) throws Exception {
  43         Path dir = TestUtil.createTemporaryDirectory();
  44         try {
  45             FileStore store = Files.getFileStore(dir);
  46             System.out.format("Checking space (%s)\n", store);
  47             long usableSpace = store.getUsableSpace();
  48             if (usableSpace < 2*FILE_SIZE_TO_COPY) {
  49                 System.out.println("Insufficient disk space to run test.");
  50                 return;
  51             }
  52             doTest(dir);
  53         } finally {
  54             TestUtil.removeAll(dir);
  55         }
  56     }
  57 
  58     static void doTest(Path dir) throws Exception {
  59         final Path source = dir.resolve("foo");
  60         final Path target = dir.resolve("bar");
  61 
  62         // create source file (don't create it as sparse file because we
  63         // require the copy to take a long time)
  64         System.out.println("Creating source file...");
  65         byte[] buf = new byte[32*1024];
  66         long total = 0;
  67         try (OutputStream out = Files.newOutputStream(source)) {
  68             do {
  69                 out.write(buf);
  70                 total += buf.length;
  71             } while (total < FILE_SIZE_TO_COPY);
  72         }
  73         System.out.println("Source file created.");
  74 
  75         ScheduledExecutorService pool =
  76             Executors.newSingleThreadScheduledExecutor();
  77         try {
  78             // copy source to target in main thread, interrupting it after a delay
  79             final Thread me = Thread.currentThread();
  80             Future<?> wakeup = pool.schedule(new Runnable() {
  81                 public void run() {
  82                     me.interrupt();
  83                 }}, DELAY_IN_MS, TimeUnit.MILLISECONDS);
  84             System.out.println("Copying file...");
  85             try {
  86                 long start = System.currentTimeMillis();
  87                 Files.copy(source, target, ExtendedCopyOption.INTERRUPTIBLE);
  88                 long duration = System.currentTimeMillis() - start;
  89                 if (duration > DURATION_MAX_IN_MS)
  90                     throw new RuntimeException("Copy was not interrupted");
  91             } catch (IOException e) {
  92                 boolean interrupted = Thread.interrupted();
  93                 if (!interrupted)
  94                     throw new RuntimeException("Interrupt status was not set");
  95                 System.out.println("Copy failed (this is expected)");
  96             }
  97             try {
  98                 wakeup.get();
  99             } catch (InterruptedException ignore) { }
 100             Thread.interrupted();
 101 
 102             // copy source to target via task in thread pool, interrupting it after
 103             // a delay using cancel(true)
 104             Future<Void> result = pool.submit(new Callable<Void>() {
 105                 public Void call() throws IOException {
 106                     System.out.println("Copying file...");
 107                     Files.copy(source, target, ExtendedCopyOption.INTERRUPTIBLE,
 108                         StandardCopyOption.REPLACE_EXISTING);
 109                     return null;
 110                 }
 111             });
 112             Thread.sleep(DELAY_IN_MS);
 113             boolean cancelled = result.cancel(true);
 114             if (!cancelled)
 115                 result.get();
 116             System.out.println("Copy cancelled.");
 117         } finally {
 118             pool.shutdown();
 119         }
 120     }
 121 }