47 lines
1.7 KiB
Java
47 lines
1.7 KiB
Java
/*
|
|
* Copyright (c) 2001, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
/* @test
|
|
* @bug 4463036
|
|
* @summary Check if file mapping extends beyond end of file
|
|
* @run main/othervm MapOverEnd
|
|
*/
|
|
|
|
import java.nio.*;
|
|
import java.nio.channels.*;
|
|
import java.io.*;
|
|
|
|
public class MapOverEnd {
|
|
public static void main (String [] args) throws Exception {
|
|
File blah = File.createTempFile("blah", null);
|
|
blah.deleteOnExit();
|
|
RandomAccessFile raf = new RandomAccessFile (blah, "rw");
|
|
FileChannel fc = raf.getChannel();
|
|
MappedByteBuffer map = fc.map(FileChannel.MapMode.READ_WRITE, 0, 2048);
|
|
fc.close();
|
|
double current = map.getDouble (50);
|
|
map.putDouble (50, current+0.1d);
|
|
map.force();
|
|
}
|
|
}
|