1 /*
   2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8020215
  27  * @summary Different execution plan when using JIT vs interpreter
  28  *
  29  * @run main compiler.escapeAnalysis.Test8020215
  30  */
  31 
  32 package compiler.escapeAnalysis;
  33 
  34 import java.util.ArrayList;
  35 import java.util.List;
  36 
  37 public class Test8020215 {
  38     public static class NamedObject {
  39         public int id;
  40         public String name;
  41         public NamedObject(int id, String name) {
  42             this.id = id;
  43             this.name = name;
  44         }
  45     }
  46 
  47     public static class NamedObjectList {
  48         public List<NamedObject> namedObjectList = new ArrayList<NamedObject>();
  49 
  50         public NamedObject getBest(int id) {
  51             NamedObject bestObject = null;
  52             for (NamedObject o : namedObjectList) {
  53                 bestObject = id==o.id ? getBetter(bestObject, o) : bestObject;
  54             }
  55             return (bestObject != null) ? bestObject : null;
  56         }
  57 
  58         private static NamedObject getBetter(NamedObject p1, NamedObject p2) {
  59             return (p1 == null) ? p2 : (p2 == null) ? p1 : (p2.name.compareTo(p1.name) >= 0) ? p2 : p1;
  60         }
  61     }
  62 
  63     static void test(NamedObjectList b, int i) {
  64         NamedObject x = b.getBest(2);
  65         // test
  66         if (x == null) {
  67             throw new RuntimeException("x should never be null here! (i=" + i + ")");
  68         }
  69     }
  70 
  71     public static void main(String[] args) {
  72         // setup
  73         NamedObjectList b = new NamedObjectList();
  74         for (int i = 0; i < 10000; i++) {
  75             b.namedObjectList.add(new NamedObject(1, "2012-12-31"));
  76         }
  77         b.namedObjectList.add(new NamedObject(2, "2013-12-31"));
  78 
  79         // execution
  80         for (int i = 0; i < 12000; i++) {
  81             test(b, i);
  82         }
  83         System.out.println("PASSED");
  84     }
  85 }