93 lines
2.9 KiB
Java
93 lines
2.9 KiB
Java
/*
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* Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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*
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* @test
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* @bug 6322678
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* @summary Test for making sure that fd is closed during
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* finalization of a stream, when an associated
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* file channel is not available
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*/
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import java.io.*;
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import java.nio.*;
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import java.nio.channels.*;
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public class FileChannelFDTest {
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static byte data[] = new byte[] {48, 49, 50, 51, 52, 53, 54, 55, 56, 57,};
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static String inFileName = "fd-in-test.txt";
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static String outFileName = "fd-out-test.txt";
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static File inFile;
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static File outFile;
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private static void writeToInFile() throws IOException {
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FileOutputStream out = new FileOutputStream(inFile);
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out.write(data);
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out.close();
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}
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public static void main(String[] args)
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throws Exception {
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inFile= new File(System.getProperty("test.dir", "."),
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inFileName);
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inFile.createNewFile();
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inFile.deleteOnExit();
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writeToInFile();
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outFile = new File(System.getProperty("test.dir", "."),
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outFileName);
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outFile.createNewFile();
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outFile.deleteOnExit();
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doFileChannel();
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}
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private static void doFileChannel() throws Exception {
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FileInputStream fis = new FileInputStream(inFile);
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FileDescriptor fd = fis.getFD();
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FileChannel fc = fis.getChannel();
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System.out.println("Created fis:" + fis);
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/**
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* Encourage the GC
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*/
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fis = null;
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fc = null;
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System.gc();
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Thread.sleep(500);
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if (fd.valid()) {
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throw new Exception("Finalizer either didn't run --" +
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"try increasing the Thread's sleep time after System.gc();" +
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"or the finalizer didn't close the file");
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}
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System.out.println("File Closed successfully");
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System.out.println();
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}
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}
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