b12c471a99
Co-authored-by: Maurizio Cimadamore <mcimadamore@openjdk.org> Co-authored-by: Per Minborg <pminborg@openjdk.org> Reviewed-by: mcimadamore
103 lines
3.7 KiB
Java
103 lines
3.7 KiB
Java
/*
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* Copyright (c) 2023, 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 org.testng.annotations.*;
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import java.io.IOException;
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import java.io.RandomAccessFile;
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import java.lang.foreign.Arena;
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import java.lang.foreign.MemorySegment;
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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 java.nio.file.Paths;
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import java.util.function.Consumer;
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import static java.lang.foreign.ValueLayout.*;
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import static org.testng.Assert.*;
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/*
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* @test
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* @modules java.base/jdk.internal.foreign
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* @requires sun.arch.data.model == "64"
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* @requires vm.flavor != "zero"
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*
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* @run testng/othervm -Xmx6G TestStringEncodingJumbo
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*/
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public class TestStringEncodingJumbo {
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@Test()
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public void testJumboSegment() {
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testWithJumboSegment("testJumboSegment", segment -> {
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segment.fill((byte) 1);
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segment.set(JAVA_BYTE, Integer.MAX_VALUE + 10L, (byte) 0);
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String big = segment.getString(100);
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assertEquals(big.length(), Integer.MAX_VALUE - (100 - 10));
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});
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}
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@Test()
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public void testStringLargerThanMaxInt() {
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testWithJumboSegment("testStringLargerThanMaxInt", segment -> {
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segment.fill((byte) 1);
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segment.set(JAVA_BYTE, Integer.MAX_VALUE + 10L, (byte) 0);
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assertThrows(IllegalArgumentException.class, () -> {
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segment.getString(0);
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});
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});
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}
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private static void testWithJumboSegment(String testName, Consumer<MemorySegment> tester) {
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Path path = Paths.get("mapped_file");
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try {
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// Relly try to make sure the file is deleted after use
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path.toFile().deleteOnExit();
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deleteIfExistsOrThrow(path);
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try (RandomAccessFile raf = new RandomAccessFile(path.toFile(), "rw")) {
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FileChannel fc = raf.getChannel();
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try (Arena arena = Arena.ofConfined()) {
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var segment = fc.map(FileChannel.MapMode.READ_WRITE, 0L, (long) Integer.MAX_VALUE + 100, arena);
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tester.accept(segment);
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}
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}
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} catch (Exception e) {
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throw new AssertionError(e);
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} catch (OutOfMemoryError oome) {
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// Unfortunately, we run out of memory and cannot run this test in this configuration
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System.out.println("Skipping test because of insufficient memory: " + testName);
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} finally {
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deleteIfExistsOrThrow(path);
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}
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}
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private static void deleteIfExistsOrThrow(Path file) {
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try {
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Files.deleteIfExists(file);
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} catch (IOException ioe) {
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throw new AssertionError("Unable to delete mapped file: " + file);
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}
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}
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}
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