aoqi@0: /*
aoqi@0:  * Copyright 2014 SAP AG.  All Rights Reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /**
aoqi@0:  * @test
aoqi@0:  * @bug 8038048
aoqi@0:  * @summary assert(null_obj->escape_state() == PointsToNode::NoEscape,etc)
aoqi@0:  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+DoEscapeAnalysis -XX:-TieredCompilation -Xbatch TestUnsafePutAddressNullObjMustNotEscape
aoqi@0:  * @author Richard Reingruber richard DOT reingruber AT sap DOT com
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.lang.reflect.Field;
aoqi@0: import sun.misc.Unsafe;
aoqi@0: 
aoqi@0: public class TestUnsafePutAddressNullObjMustNotEscape {
aoqi@0: 
aoqi@0:     public static Unsafe usafe;
aoqi@0:     public static long mem;
aoqi@0:     public static long checksum;
aoqi@0: 
aoqi@0:     public static void main(String[] args) throws Exception {
aoqi@0:         System.out.println("EXECUTING test.");
aoqi@0: 
aoqi@0:         {
aoqi@0:             System.out.println("Acquiring sun.misc.Unsafe.theUnsafe using reflection.");
aoqi@0:             getUnsafe();
aoqi@0:             System.out.println("Allocating raw memory.");
aoqi@0:             mem = (usafe.allocateMemory(1024) + 8L) & ~7L;
aoqi@0:             System.out.println("Triggering JIT compilation of the test method");
aoqi@0:             triggerJitCompilationOfTestMethod();
aoqi@0:         }
aoqi@0: 
aoqi@0:         System.out.println("SUCCESSFULLY passed test.");
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static void triggerJitCompilationOfTestMethod() {
aoqi@0:         long sum = 0;
aoqi@0:         for (int ii = 50000; ii >= 0; ii--) {
aoqi@0:             sum = testMethod();
aoqi@0:         }
aoqi@0:         checksum = sum;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static class IDGen {
aoqi@0:         private static long id;
aoqi@0:         public long nextId() {
aoqi@0:             return id++;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static long testMethod() {
aoqi@0:         // dummy alloc to trigger escape analysis
aoqi@0:         IDGen gen = new IDGen();
aoqi@0:         // StoreP of null_obj to raw mem triggers assertion in escape analysis
aoqi@0:         usafe.putAddress(mem, 0L);
aoqi@0:         return gen.nextId();
aoqi@0:     }
aoqi@0: 
aoqi@0:     private static void getUnsafe() throws Exception {
aoqi@0:         Field field = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
aoqi@0:         field.setAccessible(true);
aoqi@0:         usafe = (sun.misc.Unsafe) field.get(null);
aoqi@0:     }
aoqi@0: }