88 lines
3.2 KiB
Java
88 lines
3.2 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
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* @bug 8136421
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* @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
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* @library / /testlibrary /../../test/lib/
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* @compile ../common/CompilerToVMHelper.java
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* @build compiler.jvmci.compilerToVM.ReadUncompressedOopTest
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* @run main ClassFileInstaller
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* sun.hotspot.WhiteBox
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* sun.hotspot.WhiteBox$WhiteBoxPermission
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* jdk.vm.ci.hotspot.CompilerToVMHelper
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* @run main/othervm -Xbootclasspath/a:.
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* -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
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* -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
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* -XX:-UseCompressedOops
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* compiler.jvmci.compilerToVM.ReadUncompressedOopTest
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* @run main/othervm -Xbootclasspath/a:.
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* -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
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* -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
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* -XX:+UseCompressedOops
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* compiler.jvmci.compilerToVM.ReadUncompressedOopTest
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*/
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package compiler.jvmci.compilerToVM;
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import jdk.vm.ci.hotspot.CompilerToVMHelper;
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import jdk.test.lib.Asserts;
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import jdk.test.lib.Utils;
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import sun.hotspot.WhiteBox;
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import sun.misc.Unsafe;
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import java.lang.reflect.Field;
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public class ReadUncompressedOopTest {
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public static void main(String args[]) {
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new ReadUncompressedOopTest().runTest();
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}
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private void runTest() {
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long ptr = getPtr();
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System.out.printf("calling readUncompressedOop(0x%x)%n", ptr);
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Asserts.assertEQ(getClass(),
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CompilerToVMHelper.readUncompressedOop(ptr),
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String.format("unexpected class returned for 0x%x", ptr));
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}
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private static final Unsafe UNSAFE = Utils.getUnsafe();
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private static final WhiteBox WB = WhiteBox.getWhiteBox();
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private static final Class<?> CLASS = ReadUncompressedOopTest.class;
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private static final long PTR = WB.getObjectAddress(CLASS);
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private static long getPtr() {
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Field field;
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try {
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field = CLASS.getDeclaredField("PTR");
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} catch (NoSuchFieldException nsfe) {
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throw new Error("TESTBUG : " + nsfe, nsfe);
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}
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Object base = UNSAFE.staticFieldBase(field);
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return WB.getObjectAddress(base) + UNSAFE.staticFieldOffset(field);
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}
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}
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