1 /*
   2  * Copyright (c) 2009, 2015, 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 /**
  26  * @test
  27  * @bug 6857159
  28  * @summary local schedule failed with checkcast of Thread.currentThread()
  29  * @library /testlibrary
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  *
  33  * @run driver compiler.c2.Test6857159
  34  */
  35 
  36 package compiler.c2;
  37 
  38 import jdk.test.lib.OutputAnalyzer;
  39 import jdk.test.lib.ProcessTools;
  40 
  41 public class Test6857159 {
  42     public static void main(String[] args) throws Throwable {
  43         String className = Test.class.getName();
  44         OutputAnalyzer analyzer = ProcessTools.executeTestJvm("-Xbatch",
  45                 "-XX:+PrintCompilation",
  46                 "-XX:CompileOnly="+ className + "$ct::run",
  47                 className);
  48         analyzer.shouldNotContain("COMPILE SKIPPED");
  49         analyzer.shouldContain(className + "$ct0::run (16 bytes)");
  50         analyzer.shouldHaveExitValue(0);
  51     }
  52 
  53     static class Test extends Thread {
  54         static class ct0 extends Test {
  55             public void message() {
  56             }
  57 
  58             public void run() {
  59                 message();
  60                 ct0 ct = (ct0) Thread.currentThread();
  61                 ct.message();
  62             }
  63         }
  64 
  65         static class ct1 extends ct0 {
  66             public void message() {
  67             }
  68         }
  69 
  70         static class ct2 extends ct0 {
  71             public void message() {
  72             }
  73         }
  74 
  75         public static void main(String[] args) throws Exception {
  76             for (int i = 0; i < 20000; i++) {
  77                 Thread t = null;
  78                 switch (i % 3) {
  79                     case 0:
  80                         t = new ct0();
  81                         break;
  82                     case 1:
  83                         t = new ct1();
  84                         break;
  85                     case 2:
  86                         t = new ct2();
  87                         break;
  88                 }
  89                 t.start();
  90                 t.join();
  91             }
  92         }
  93     }
  94 }