diff -r fd16c54261b3 -r 90ce3da70b43 jdk/test/java/io/FileDescriptor/FileChannelFDTest.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/jdk/test/java/io/FileDescriptor/FileChannelFDTest.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,92 @@ +/* + * Copyright 2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + */ + +/** + * + * @test + * @bug 6322678 + * @summary Test for making sure that fd is closed during + * finalization of a stream, when an associated + * file channel is not available + */ + +import java.io.*; +import java.nio.*; +import java.nio.channels.*; + +public class FileChannelFDTest { + + static byte data[] = new byte[] {48, 49, 50, 51, 52, 53, 54, 55, 56, 57,}; + static String inFileName = "fd-in-test.txt"; + static String outFileName = "fd-out-test.txt"; + static File inFile; + static File outFile; + + private static void writeToInFile() throws IOException { + FileOutputStream out = new FileOutputStream(inFile); + out.write(data); + out.close(); + } + + public static void main(String[] args) + throws Exception { + + inFile= new File(System.getProperty("test.dir", "."), + inFileName); + inFile.createNewFile(); + inFile.deleteOnExit(); + writeToInFile(); + + outFile = new File(System.getProperty("test.dir", "."), + outFileName); + outFile.createNewFile(); + outFile.deleteOnExit(); + + doFileChannel(); + } + + private static void doFileChannel() throws Exception { + + FileInputStream fis = new FileInputStream(inFile); + FileDescriptor fd = fis.getFD(); + FileChannel fc = fis.getChannel(); + System.out.println("Created fis:" + fis); + + /** + * Encourage the GC + */ + fis = null; + fc = null; + System.gc(); + Thread.sleep(500); + + if (fd.valid()) { + throw new Exception("Finalizer either didn't run --" + + "try increasing the Thread's sleep time after System.gc();" + + "or the finalizer didn't close the file"); + } + + System.out.println("File Closed successfully"); + System.out.println(); + } +}