1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/compiler/EscapeAnalysis/TestUnsafePutAddressNullObjMustNotEscape.java Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,84 @@
1.4 +/*
1.5 + * Copyright 2014 SAP AG. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/**
1.28 + * @test
1.29 + * @bug 8038048
1.30 + * @summary assert(null_obj->escape_state() == PointsToNode::NoEscape,etc)
1.31 + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+DoEscapeAnalysis -XX:-TieredCompilation -Xbatch TestUnsafePutAddressNullObjMustNotEscape
1.32 + * @author Richard Reingruber richard DOT reingruber AT sap DOT com
1.33 + */
1.34 +
1.35 +import java.lang.reflect.Field;
1.36 +import sun.misc.Unsafe;
1.37 +
1.38 +public class TestUnsafePutAddressNullObjMustNotEscape {
1.39 +
1.40 + public static Unsafe usafe;
1.41 + public static long mem;
1.42 + public static long checksum;
1.43 +
1.44 + public static void main(String[] args) throws Exception {
1.45 + System.out.println("EXECUTING test.");
1.46 +
1.47 + {
1.48 + System.out.println("Acquiring sun.misc.Unsafe.theUnsafe using reflection.");
1.49 + getUnsafe();
1.50 + System.out.println("Allocating raw memory.");
1.51 + mem = (usafe.allocateMemory(1024) + 8L) & ~7L;
1.52 + System.out.println("Triggering JIT compilation of the test method");
1.53 + triggerJitCompilationOfTestMethod();
1.54 + }
1.55 +
1.56 + System.out.println("SUCCESSFULLY passed test.");
1.57 + }
1.58 +
1.59 + public static void triggerJitCompilationOfTestMethod() {
1.60 + long sum = 0;
1.61 + for (int ii = 50000; ii >= 0; ii--) {
1.62 + sum = testMethod();
1.63 + }
1.64 + checksum = sum;
1.65 + }
1.66 +
1.67 + public static class IDGen {
1.68 + private static long id;
1.69 + public long nextId() {
1.70 + return id++;
1.71 + }
1.72 + }
1.73 +
1.74 + public static long testMethod() {
1.75 + // dummy alloc to trigger escape analysis
1.76 + IDGen gen = new IDGen();
1.77 + // StoreP of null_obj to raw mem triggers assertion in escape analysis
1.78 + usafe.putAddress(mem, 0L);
1.79 + return gen.nextId();
1.80 + }
1.81 +
1.82 + private static void getUnsafe() throws Exception {
1.83 + Field field = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
1.84 + field.setAccessible(true);
1.85 + usafe = (sun.misc.Unsafe) field.get(null);
1.86 + }
1.87 +}
