Mercurial > hg > graal-compiler
view test/compiler/EscapeAnalysis/TestUnsafePutAddressNullObjMustNotEscape.java @ 20638:2bd263bb3a75
Added tag hs25.40-b19 for changeset 3a8a0fd171c5
author | amurillo |
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date | Fri, 14 Nov 2014 07:37:04 -0800 |
parents | 87b5e00100fe |
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/* * Copyright 2014 SAP AG. 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. */ /** * @test * @bug 8038048 * @summary assert(null_obj->escape_state() == PointsToNode::NoEscape,etc) * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+DoEscapeAnalysis -XX:-TieredCompilation -Xbatch TestUnsafePutAddressNullObjMustNotEscape * @author Richard Reingruber richard DOT reingruber AT sap DOT com */ import java.lang.reflect.Field; import sun.misc.Unsafe; public class TestUnsafePutAddressNullObjMustNotEscape { public static Unsafe usafe; public static long mem; public static long checksum; public static void main(String[] args) throws Exception { System.out.println("EXECUTING test."); { System.out.println("Acquiring sun.misc.Unsafe.theUnsafe using reflection."); getUnsafe(); System.out.println("Allocating raw memory."); mem = (usafe.allocateMemory(1024) + 8L) & ~7L; System.out.println("Triggering JIT compilation of the test method"); triggerJitCompilationOfTestMethod(); } System.out.println("SUCCESSFULLY passed test."); } public static void triggerJitCompilationOfTestMethod() { long sum = 0; for (int ii = 50000; ii >= 0; ii--) { sum = testMethod(); } checksum = sum; } public static class IDGen { private static long id; public long nextId() { return id++; } } public static long testMethod() { // dummy alloc to trigger escape analysis IDGen gen = new IDGen(); // StoreP of null_obj to raw mem triggers assertion in escape analysis usafe.putAddress(mem, 0L); return gen.nextId(); } private static void getUnsafe() throws Exception { Field field = sun.misc.Unsafe.class.getDeclaredField("theUnsafe"); field.setAccessible(true); usafe = (sun.misc.Unsafe) field.get(null); } }