74 lines
2.5 KiB
Java
74 lines
2.5 KiB
Java
/*
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* Copyright 2001 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/* @test
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* @bug 4462336
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* @summary Simple MappedByteBuffer tests
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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 Basic {
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public static void main(String[] args) throws Exception {
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byte[] srcData = new byte[20];
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for (int i=0; i<20; i++)
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srcData[i] = 3;
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File blah = File.createTempFile("blah", null);
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blah.deleteOnExit();
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FileOutputStream fos = new FileOutputStream(blah);
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FileChannel fc = fos.getChannel();
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fc.write(ByteBuffer.wrap(srcData));
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fc.close();
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fos.close();
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FileInputStream fis = new FileInputStream(blah);
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fc = fis.getChannel();
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MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, 10);
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mbb.load();
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mbb.isLoaded();
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mbb.force();
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if (!mbb.isReadOnly())
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throw new RuntimeException("Incorrect isReadOnly");
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fc.close();
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fis.close();
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RandomAccessFile raf = new RandomAccessFile(blah, "r");
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fc = raf.getChannel();
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mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, 10);
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if (!mbb.isReadOnly())
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throw new RuntimeException("Incorrect isReadOnly");
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fc.close();
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raf.close();
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raf = new RandomAccessFile(blah, "rw");
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fc = raf.getChannel();
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mbb = fc.map(FileChannel.MapMode.READ_WRITE, 0, 10);
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if (mbb.isReadOnly())
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throw new RuntimeException("Incorrect isReadOnly");
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fc.close();
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raf.close();
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}
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}
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