0N/A/*
3909N/A * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
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0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/A/* @test
0N/A * @bug 4802340
0N/A * @summary Testing force(), load() isLoaded() of zero len MBB
2546N/A * @run main/othervm ZeroMap
0N/A */
0N/A
0N/Aimport java.io.*;
0N/Aimport java.nio.*;
0N/Aimport java.util.*;
0N/Aimport java.nio.channels.*;
0N/A
0N/Apublic class ZeroMap {
0N/A public static void main(String[] args) throws Exception {
0N/A Random random = new Random();
0N/A long filesize = random.nextInt(1024*1024);
0N/A int cut = random.nextInt((int)filesize);
3496N/A File file = File.createTempFile("Blah", null);
3496N/A file.deleteOnExit();
3496N/A try (RandomAccessFile raf = new RandomAccessFile(file, "rw")) {
3496N/A raf.setLength(filesize);
3496N/A FileChannel fc = raf.getChannel();
3496N/A MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_WRITE, cut, 0);
3496N/A mbb.force();
3496N/A mbb.load();
3496N/A mbb.isLoaded();
3496N/A }
3496N/A
3496N/A // improve chance that mapped buffer will be unmapped
3496N/A System.gc();
3496N/A Thread.sleep(500);
0N/A }
0N/A}