45 lines
1.6 KiB
Java
45 lines
1.6 KiB
Java
/*
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* Copyright (c) 2022, 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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import java.io.IOException;
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import java.nio.channels.FileChannel;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import static java.nio.file.StandardOpenOption.*;
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/**
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* Common library for various test file utility functions.
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*/
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public final class FileChannelUtils {
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public static Path createSparseTempFile(String prefix, String suffix) throws IOException {
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Path file = Files.createTempFile(prefix, suffix);
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Files.delete(file); // need CREATE_NEW to make the file sparse
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FileChannel fc = FileChannel.open(file, CREATE_NEW, SPARSE, WRITE);
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fc.close();
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return file;
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}
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}
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