1 /* 2 * Copyright (c) 2008, 2018, 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 4446672 27 * 28 * @summary converted from VM Testbase jit/regression/b4446672. 29 * VM Testbase keywords: [jit, quick] 30 * 31 * @library /vmTestbase 32 * /test/lib 33 * @run driver jdk.test.lib.FileInstaller . . 34 * @run main/othervm jit.regression.b4446672.b4446672 35 */ 36 37 package jit.regression.b4446672; 38 39 import nsk.share.TestFailure; 40 41 public class b4446672 { 42 43 public static void main(String[] args) { 44 new b4446672().run(); 45 } 46 47 private void run() { 48 new GCThread().start(); 49 new TestThreadStarter().start(); 50 51 while (!gcing) Thread.yield(); 52 while (!starting) Thread.yield(); 53 done = true; 54 while (!testing) Thread.yield(); 55 } 56 57 class TestThread extends Thread { 58 public void run() { 59 System.out.println ("TestThread."); 60 testing = true; 61 } 62 } 63 64 class TestThreadStarter extends Thread { 65 public void run() { 66 System.out.println ("TestThreadStarter."); 67 starting=true; 68 testThread.start(); 69 } 70 } 71 72 class GCThread extends Thread { 73 public void run() { 74 System.out.println ("GCThread run."); 75 synchronized (testThread) { 76 System.out.println ("GCThread synchronized."); 77 while (!done) { 78 gcing=true; 79 yield(); 80 System.gc(); 81 } 82 } 83 System.out.println ("GCThread done."); 84 } 85 } 86 87 TestThread testThread = new TestThread(); 88 boolean done = false; 89 boolean gcing = false; 90 boolean testing = false; 91 boolean starting = false; 92 }