1 /*
   2  * Copyright (c) 2017, 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
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  23 
  24 /* @test
  25  * @bug 8184157
  26  * @summary Ensure that correct PendingFuture is used in Iocp completion status event handler
  27  * @requires (os.family == "windows")
  28  */
  29 
  30 import java.nio.ByteBuffer;
  31 import java.nio.channels.AsynchronousFileChannel;
  32 import java.nio.channels.FileLock;
  33 import java.nio.file.Files;
  34 import java.nio.file.Path;
  35 import java.nio.file.Paths;
  36 
  37 import static java.nio.file.StandardOpenOption.*;
  38 
  39 public class PendingIoCacheRace {
  40 
  41     public static void main(String[] args) throws Exception {
  42         Path d = Paths.get(System.getProperty("test.dir", "."));
  43         Path p = Files.createTempFile(d, "tmp", null);
  44         for (int i=0; i < 1000; i++) {
  45             AsynchronousFileChannel f = AsynchronousFileChannel.open
  46                 (p, READ, WRITE, CREATE);
  47             FileLock l = f.lock().get();
  48             f.read(ByteBuffer.allocate(16), 0).get();
  49             f.write(ByteBuffer.allocate(16), 0).get();
  50             l.release();
  51             f.close();
  52             Files.delete(p);
  53         }
  54     }
  55 }