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 }