66 lines
2.1 KiB
Java
66 lines
2.1 KiB
Java
/*
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* Copyright (c) 2003, 2010, 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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/* @test
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* @bug 4863423
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* @summary Test Util caching policy
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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 BigReadWrite {
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static int testSize = 15;
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public static void main(String[] args) throws Exception {
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// One platform suffices to check for this bug
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String osName = System.getProperty("os.name");
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if (!osName.startsWith("SunOS"))
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return;
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FileOutputStream fos = new FileOutputStream("/dev/zero");
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FileChannel fc = fos.getChannel();
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// Three small writes to fill up the Util cache
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ByteBuffer buf = ByteBuffer.allocate(900);
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fc.write(buf);
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buf = ByteBuffer.allocate(950);
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fc.write(buf);
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buf = ByteBuffer.allocate(975);
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fc.write(buf);
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buf = ByteBuffer.allocate(4419000);
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// Now initiate large write to create larger direct buffers
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long iterations = 0;
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while (iterations < 50) {
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fc.write(buf);
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buf.rewind();
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iterations++;
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}
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// Clean up
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fc.close();
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}
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}
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