Wed, 21 May 2014 10:56:41 -0700
Added tag jdk8u20-b15 for changeset 8c785f9bde6f
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright 2014 SAP AG. All Rights Reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | */ |
aoqi@0 | 23 | |
aoqi@0 | 24 | /** |
aoqi@0 | 25 | * @test |
aoqi@0 | 26 | * @bug 8038048 |
aoqi@0 | 27 | * @summary assert(null_obj->escape_state() == PointsToNode::NoEscape,etc) |
aoqi@0 | 28 | * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+DoEscapeAnalysis -XX:-TieredCompilation -Xbatch TestUnsafePutAddressNullObjMustNotEscape |
aoqi@0 | 29 | * @author Richard Reingruber richard DOT reingruber AT sap DOT com |
aoqi@0 | 30 | */ |
aoqi@0 | 31 | |
aoqi@0 | 32 | import java.lang.reflect.Field; |
aoqi@0 | 33 | import sun.misc.Unsafe; |
aoqi@0 | 34 | |
aoqi@0 | 35 | public class TestUnsafePutAddressNullObjMustNotEscape { |
aoqi@0 | 36 | |
aoqi@0 | 37 | public static Unsafe usafe; |
aoqi@0 | 38 | public static long mem; |
aoqi@0 | 39 | public static long checksum; |
aoqi@0 | 40 | |
aoqi@0 | 41 | public static void main(String[] args) throws Exception { |
aoqi@0 | 42 | System.out.println("EXECUTING test."); |
aoqi@0 | 43 | |
aoqi@0 | 44 | { |
aoqi@0 | 45 | System.out.println("Acquiring sun.misc.Unsafe.theUnsafe using reflection."); |
aoqi@0 | 46 | getUnsafe(); |
aoqi@0 | 47 | System.out.println("Allocating raw memory."); |
aoqi@0 | 48 | mem = (usafe.allocateMemory(1024) + 8L) & ~7L; |
aoqi@0 | 49 | System.out.println("Triggering JIT compilation of the test method"); |
aoqi@0 | 50 | triggerJitCompilationOfTestMethod(); |
aoqi@0 | 51 | } |
aoqi@0 | 52 | |
aoqi@0 | 53 | System.out.println("SUCCESSFULLY passed test."); |
aoqi@0 | 54 | } |
aoqi@0 | 55 | |
aoqi@0 | 56 | public static void triggerJitCompilationOfTestMethod() { |
aoqi@0 | 57 | long sum = 0; |
aoqi@0 | 58 | for (int ii = 50000; ii >= 0; ii--) { |
aoqi@0 | 59 | sum = testMethod(); |
aoqi@0 | 60 | } |
aoqi@0 | 61 | checksum = sum; |
aoqi@0 | 62 | } |
aoqi@0 | 63 | |
aoqi@0 | 64 | public static class IDGen { |
aoqi@0 | 65 | private static long id; |
aoqi@0 | 66 | public long nextId() { |
aoqi@0 | 67 | return id++; |
aoqi@0 | 68 | } |
aoqi@0 | 69 | } |
aoqi@0 | 70 | |
aoqi@0 | 71 | public static long testMethod() { |
aoqi@0 | 72 | // dummy alloc to trigger escape analysis |
aoqi@0 | 73 | IDGen gen = new IDGen(); |
aoqi@0 | 74 | // StoreP of null_obj to raw mem triggers assertion in escape analysis |
aoqi@0 | 75 | usafe.putAddress(mem, 0L); |
aoqi@0 | 76 | return gen.nextId(); |
aoqi@0 | 77 | } |
aoqi@0 | 78 | |
aoqi@0 | 79 | private static void getUnsafe() throws Exception { |
aoqi@0 | 80 | Field field = sun.misc.Unsafe.class.getDeclaredField("theUnsafe"); |
aoqi@0 | 81 | field.setAccessible(true); |
aoqi@0 | 82 | usafe = (sun.misc.Unsafe) field.get(null); |
aoqi@0 | 83 | } |
aoqi@0 | 84 | } |