J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /** |
| 25 | * |
| 26 | * @test |
| 27 | * @bug 6322678 |
| 28 | * @summary Test for making sure that fd is closed during |
| 29 | * finalization of a stream, when an associated |
| 30 | * file channel is not available |
| 31 | */ |
| 32 | |
| 33 | import java.io.*; |
| 34 | import java.nio.*; |
| 35 | import java.nio.channels.*; |
| 36 | |
| 37 | public class FileChannelFDTest { |
| 38 | |
| 39 | static byte data[] = new byte[] {48, 49, 50, 51, 52, 53, 54, 55, 56, 57,}; |
| 40 | static String inFileName = "fd-in-test.txt"; |
| 41 | static String outFileName = "fd-out-test.txt"; |
| 42 | static File inFile; |
| 43 | static File outFile; |
| 44 | |
| 45 | private static void writeToInFile() throws IOException { |
| 46 | FileOutputStream out = new FileOutputStream(inFile); |
| 47 | out.write(data); |
| 48 | out.close(); |
| 49 | } |
| 50 | |
| 51 | public static void main(String[] args) |
| 52 | throws Exception { |
| 53 | |
| 54 | inFile= new File(System.getProperty("test.dir", "."), |
| 55 | inFileName); |
| 56 | inFile.createNewFile(); |
| 57 | inFile.deleteOnExit(); |
| 58 | writeToInFile(); |
| 59 | |
| 60 | outFile = new File(System.getProperty("test.dir", "."), |
| 61 | outFileName); |
| 62 | outFile.createNewFile(); |
| 63 | outFile.deleteOnExit(); |
| 64 | |
| 65 | doFileChannel(); |
| 66 | } |
| 67 | |
| 68 | private static void doFileChannel() throws Exception { |
| 69 | |
| 70 | FileInputStream fis = new FileInputStream(inFile); |
| 71 | FileDescriptor fd = fis.getFD(); |
| 72 | FileChannel fc = fis.getChannel(); |
| 73 | System.out.println("Created fis:" + fis); |
| 74 | |
| 75 | /** |
| 76 | * Encourage the GC |
| 77 | */ |
| 78 | fis = null; |
| 79 | fc = null; |
| 80 | System.gc(); |
| 81 | Thread.sleep(500); |
| 82 | |
| 83 | if (fd.valid()) { |
| 84 | throw new Exception("Finalizer either didn't run --" + |
| 85 | "try increasing the Thread's sleep time after System.gc();" + |
| 86 | "or the finalizer didn't close the file"); |
| 87 | } |
| 88 | |
| 89 | System.out.println("File Closed successfully"); |
| 90 | System.out.println(); |
| 91 | } |
| 92 | } |