93 lines
3.0 KiB
Java
93 lines
3.0 KiB
Java
/*
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* Copyright (c) 2014 SAP SE. 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 8038048
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* @summary assert(null_obj->escape_state() == PointsToNode::NoEscape,etc)
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* @modules java.base/jdk.internal.misc:+open
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*
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* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+DoEscapeAnalysis
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* -XX:-TieredCompilation -Xbatch
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* compiler.escapeAnalysis.TestUnsafePutAddressNullObjMustNotEscape
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*
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* @author Richard Reingruber richard DOT reingruber AT sap DOT com
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*/
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package compiler.escapeAnalysis;
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import jdk.internal.misc.Unsafe;
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import java.lang.reflect.Field;
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public class TestUnsafePutAddressNullObjMustNotEscape {
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public static Unsafe usafe;
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public static long mem;
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public static long checksum;
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public static void main(String[] args) throws Exception {
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System.out.println("EXECUTING test.");
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{
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System.out.println("Acquiring jdk.internal.misc.Unsafe.theUnsafe using reflection.");
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getUnsafe();
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System.out.println("Allocating raw memory.");
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mem = (usafe.allocateMemory(1024) + 8L) & ~7L;
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System.out.println("Triggering JIT compilation of the test method");
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triggerJitCompilationOfTestMethod();
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}
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System.out.println("SUCCESSFULLY passed test.");
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}
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public static void triggerJitCompilationOfTestMethod() {
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long sum = 0;
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for (int ii = 50000; ii >= 0; ii--) {
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sum = testMethod();
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}
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checksum = sum;
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}
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public static class IDGen {
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private static long id;
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public long nextId() {
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return id++;
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}
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}
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public static long testMethod() {
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// dummy alloc to trigger escape analysis
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IDGen gen = new IDGen();
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// StoreP of null_obj to raw mem triggers assertion in escape analysis
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usafe.putAddress(mem, 0L);
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return gen.nextId();
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}
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private static void getUnsafe() throws Exception {
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Field field = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe");
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field.setAccessible(true);
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usafe = (jdk.internal.misc.Unsafe) field.get(null);
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}
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}
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