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test/jdk/java/nio/channels/FileChannel/FileChannelUtils.java
44 строки
2 KB
Daniel Jeliński
8294437: java/nio/channels/FileChannel tests slow on Windows
03 окт 2022, 20:42
03 окт 2022, 20:42
a4f2078
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/* * Copyright (c) 2022, 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. */ import java.io.IOException; import java.nio.channels.FileChannel; import java.nio.file.Files; import java.nio.file.Path; import static java.nio.file.StandardOpenOption.*; /** * Common library for various test file utility functions. */ public final class FileChannelUtils { public static Path createSparseTempFile(String prefix, String suffix) throws IOException { Path file = Files.createTempFile(prefix, suffix); Files.delete(file); // need CREATE_NEW to make the file sparse FileChannel fc = FileChannel.open(file, CREATE_NEW, SPARSE, WRITE); fc.close(); return file; } }