113 lines
4.2 KiB
Java
113 lines
4.2 KiB
Java
/*
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* Copyright (c) 2014, 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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* @test
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* @bug 8025619
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* @summary Verify that a channel obtained from a closed stream is truly closed.
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*/
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.RandomAccessFile;
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import java.nio.channels.ClosedChannelException;
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import java.nio.channels.FileChannel;
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public class GetClosedChannel {
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private static final int NUM_CHANNELS = 3;
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private static final int NUM_EXCEPTIONS = 2*NUM_CHANNELS;
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public static void main(String[] args) throws IOException {
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int exceptions = 0;
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int openChannels = 0;
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for (int i = 0; i < NUM_CHANNELS; i++) {
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File f = File.createTempFile("fcbug", ".tmp");
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f.deleteOnExit();
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FileChannel fc = null;
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boolean shared = false;
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switch (i) {
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case 0:
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System.out.print("FileInputStream...");
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FileInputStream fis = new FileInputStream(f);
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fis.close();
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fc = fis.getChannel();
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if (fc.isOpen()) {
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System.err.println("FileInputStream channel should not be open");
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openChannels++;
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}
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shared = true;
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break;
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case 1:
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System.out.print("FileOutputStream...");
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FileOutputStream fos = new FileOutputStream(f);
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fos.close();
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fc = fos.getChannel();
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if (fc.isOpen()) {
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System.err.println("FileOutputStream channel should not be open");
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openChannels++;
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}
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break;
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case 2:
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System.out.print("RandomAccessFile...");
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RandomAccessFile raf = new RandomAccessFile(f, "rw");
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raf.close();
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fc = raf.getChannel();
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if (fc.isOpen()) {
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System.err.println("RandomAccessFile channel should not be open");
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openChannels++;
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}
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break;
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default:
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assert false : "Should not get here";
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}
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try {
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long position = fc.position();
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System.err.println("Channel "+i+" position is "+position);
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} catch (ClosedChannelException cce) {
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exceptions++;
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}
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try {
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fc.tryLock(0, Long.MAX_VALUE, shared);
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} catch (ClosedChannelException e) {
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System.out.println("OK");
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exceptions++;
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} catch (Error err) {
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System.err.println(err);
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}
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}
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if (exceptions != NUM_EXCEPTIONS || openChannels != 0) {
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throw new RuntimeException("FAILED:" +
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" ClosedChannelExceptions: expected: " + NUM_EXCEPTIONS +
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" actual: " + exceptions + ";" + System.lineSeparator() +
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" number of open channels: expected: 0 " +
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" actual: " + openChannels + ".");
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}
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}
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}
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