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 
  34 import jdk.test.lib.*;
  35 
  36 public class Test6857159 {
  37     public static void main(String[] args) throws Exception {
  38         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xbatch", "-XX:+PrintCompilation",
  39                                                                   "-XX:CompileOnly=Test$ct.run", "Test");
  40         OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
  41         analyzer.shouldNotContain("COMPILE SKIPPED");
  42         analyzer.shouldContain("Test$ct0::run (16 bytes)");
  43     }
  44 }
  45 
  46 class Test extends Thread {
  47     static class ct0 extends Test {
  48         public void message() { }
  49 
  50         public void run() {
  51              message();
  52              ct0 ct = (ct0) Thread.currentThread();
  53              ct.message();
  54         }
  55     }
  56     static class ct1 extends ct0 {
  57         public void message() { }
  58     }
  59     static class ct2 extends ct0 {
  60         public void message() { }
  61     }
  62 
  63     public static void main(String[] args) throws Exception {
  64         for (int i = 0; i < 20000; i++) {
  65             Thread t = null;
  66             switch (i % 3) {
  67               case 0: t = new ct0(); break;
  68               case 1: t = new ct1(); break;
  69               case 2: t = new ct2(); break;
  70             }
  71             t.start();
  72             t.join();
  73         }
  74     }
  75 }