80 lines
3.1 KiB
Java
80 lines
3.1 KiB
Java
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/*
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* Copyright (c) 2015, 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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/*
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* Test that the string referenced by an attribute is retrieved.
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* @test ImageGetStringBytesTest
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* @summary Unit test for JVM_ImageGetStringBytes() method
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* @library /testlibrary /../../test/lib
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* @build LocationConstants ImageGetStringBytesTest
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* @run main ClassFileInstaller sun.hotspot.WhiteBox
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* sun.hotspot.WhiteBox$WhiteBoxPermission
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI ImageGetStringBytesTest
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*/
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import java.io.File;
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import java.nio.ByteOrder;
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import sun.hotspot.WhiteBox;
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import static jdk.test.lib.Asserts.*;
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public class ImageGetStringBytesTest implements LocationConstants {
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public static final WhiteBox wb = WhiteBox.getWhiteBox();
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public static void main(String... args) throws Exception {
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String javaHome = System.getProperty("java.home");
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String imageFile = javaHome + File.separator + "lib" + File.separator
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+ "modules" + File.separator + "bootmodules.jimage";
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if (!(new File(imageFile)).exists()) {
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System.out.printf("Test skipped.");
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return;
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}
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boolean bigEndian = ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN;
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long id = wb.imageOpenImage(imageFile, bigEndian);
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String className = "/java.base/java/lang/String.class";
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long[] offsetArr = wb.imageFindAttributes(id, className.getBytes());
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// Module
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assertTrue(checkAttribute(id, offsetArr, LOCATION_ATTRIBUTE_MODULE, "Module"));
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// Parent
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assertTrue(checkAttribute(id, offsetArr, LOCATION_ATTRIBUTE_PARENT, "Parent"));
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// Base
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assertTrue(checkAttribute(id, offsetArr, LOCATION_ATTRIBUTE_BASE, "Base"));
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// Extension
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assertTrue(checkAttribute(id, offsetArr, LOCATION_ATTRIBUTE_EXTENSION, "Extension"));
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wb.imageCloseImage(id);
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}
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private static boolean checkAttribute(long id, long[] offsetArr, int attrId, String attrName) {
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long offset = offsetArr[attrId];
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return wb.imageGetStringBytes(id, (int) offset) != null;
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}
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}
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